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annotate regex.c @ 2371:3274fb530385

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(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression. (enum re_opcode_t): Update description of succeed_n. (PATFETCH): Always define. (regex_compile): Use lookahead rather than PATUNFETCH (for repetition operators, char classes, shy-groups and intervals). Optimize special cases of intervals so as to only use succeed_n and jump_n when really needed. (re_compile_fastmap): Simplify handling of jump_n and succeed_n now that we don't have to handle the special cases any more. Simplify on_failure_jump handling as well.
author Stefan Monnier <monnier@iro.umontreal.ca>
date Mon, 27 Mar 2000 22:26:37 +0000
parents d8ded9c0e20c
children c0c46914f4fe
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* Extended regular expression matching and search library, version
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2 0.12. (Implements POSIX draft P10003.2/D11.2, except for
2
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3 internationalization features.)
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5 Copyright (C) 1993,94,95,96,97,98,2000 Free Software Foundation, Inc.
2
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6
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7 This program is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 2, or (at your option)
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10 any later version.
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11
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12 This program is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with this program; if not, write to the Free Software
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19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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20 USA. */
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21
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22 /* TODO:
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23 - use analyze_first to optimize non-empty loops
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24 - clean up multibyte issues
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25 - structure the opcode space into opcode+flag.
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26 - merge with glic's regex.[ch]
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27
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28 That's it for now -sm */
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29
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30 /* AIX requires this to be the first thing in the file. */
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31 #if defined (_AIX) && !defined (REGEX_MALLOC)
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32 #pragma alloca
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33 #endif
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34
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35 #undef _GNU_SOURCE
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36 #define _GNU_SOURCE
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37
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38 #ifdef emacs
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39 /* Converts the pointer to the char to BEG-based offset from the start. */
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40 #define PTR_TO_OFFSET(d) POS_AS_IN_BUFFER (POINTER_TO_OFFSET (d))
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41 #define POS_AS_IN_BUFFER(p) ((p) + (NILP (re_match_object) || BUFFERP (re_match_object)))
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42 #else
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43 #define PTR_TO_OFFSET(d) 0
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44 #endif
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45
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46 #ifdef HAVE_CONFIG_H
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47 #include <config.h>
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48 #endif
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49
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50 /* We need this for `regex.h', and perhaps for the Emacs include files. */
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51 #include <sys/types.h>
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52
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53 /* This is for other GNU distributions with internationalized messages. */
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54 #if HAVE_LIBINTL_H || defined (_LIBC)
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55 # include <libintl.h>
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56 #else
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57 # define gettext(msgid) (msgid)
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58 #endif
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59
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60 #ifndef gettext_noop
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61 /* This define is so xgettext can find the internationalizable
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62 strings. */
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63 #define gettext_noop(String) String
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64 #endif
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65
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66 /* The `emacs' switch turns on certain matching commands
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67 that make sense only in Emacs. */
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68 #ifdef emacs
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69
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70 #include "lisp.h"
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71 #include "buffer.h"
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72
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73 /* Make syntax table lookup grant data in gl_state. */
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74 #define SYNTAX_ENTRY_VIA_PROPERTY
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75
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76 #include "syntax.h"
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77 #include "charset.h"
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78 #include "category.h"
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79
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80 #define malloc xmalloc
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81 #define realloc xrealloc
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82 #define free xfree
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83
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84 #define RE_STRING_CHAR(p, s) \
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85 (multibyte ? (STRING_CHAR (p, s)) : (*(p)))
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86
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87 #else /* not emacs */
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88
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89 /* If we are not linking with Emacs proper,
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90 we can't use the relocating allocator
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91 even if config.h says that we can. */
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92 #undef REL_ALLOC
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93
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94 #if defined (STDC_HEADERS) || defined (_LIBC)
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95 #include <stdlib.h>
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96 #else
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97 char *malloc ();
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98 char *realloc ();
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99 #endif
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100
451
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101 /* When used in Emacs's lib-src, we need to get bzero and bcopy somehow.
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102 If nothing else has been done, use the method below. */
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103 #ifdef INHIBIT_STRING_HEADER
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104 #if !(defined (HAVE_BZERO) && defined (HAVE_BCOPY))
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105 #if !defined (bzero) && !defined (bcopy)
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106 #undef INHIBIT_STRING_HEADER
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107 #endif
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108 #endif
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109 #endif
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110
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111 /* This is the normal way of making sure we have a bcopy and a bzero.
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112 This is used in most programs--a few other programs avoid this
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113 by defining INHIBIT_STRING_HEADER. */
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114 #ifndef INHIBIT_STRING_HEADER
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115 #if defined (HAVE_STRING_H) || defined (STDC_HEADERS) || defined (_LIBC)
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116 #include <string.h>
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117 #ifndef bcmp
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118 #define bcmp(s1, s2, n) memcmp ((s1), (s2), (n))
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119 #endif
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120 #ifndef bcopy
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121 #define bcopy(s, d, n) memcpy ((d), (s), (n))
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122 #endif
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123 #ifndef bzero
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124 #define bzero(s, n) memset ((s), 0, (n))
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125 #endif
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126 #else
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127 #include <strings.h>
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128 #endif
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129 #endif
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130
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131 /* Define the syntax stuff for \<, \>, etc. */
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132
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133 /* Sword must be nonzero for the wordchar pattern commands in re_match_2. */
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134 enum syntaxcode { Swhitespace = 0, Sword = 1 };
441
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135
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136 #ifdef SWITCH_ENUM_BUG
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137 #define SWITCH_ENUM_CAST(x) ((int)(x))
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138 #else
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139 #define SWITCH_ENUM_CAST(x) (x)
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140 #endif
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141
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142 #ifdef SYNTAX_TABLE
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143
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144 extern char *re_syntax_table;
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145
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146 #else /* not SYNTAX_TABLE */
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147
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148 /* How many characters in the character set. */
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149 #define CHAR_SET_SIZE 256
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150
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151 static char re_syntax_table[CHAR_SET_SIZE];
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152
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153 static void
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154 init_syntax_once ()
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155 {
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156 register int c;
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157 static int done = 0;
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158
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159 if (done)
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160 return;
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161
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162 bzero (re_syntax_table, sizeof re_syntax_table);
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163
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164 for (c = 'a'; c <= 'z'; c++)
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165 re_syntax_table[c] = Sword;
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166
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167 for (c = 'A'; c <= 'Z'; c++)
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168 re_syntax_table[c] = Sword;
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169
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170 for (c = '0'; c <= '9'; c++)
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171 re_syntax_table[c] = Sword;
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172
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173 re_syntax_table['_'] = Sword;
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174
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175 done = 1;
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176 }
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177
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178 #endif /* not SYNTAX_TABLE */
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179
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180 #define SYNTAX(c) re_syntax_table[c]
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181
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182 /* Dummy macros for non-Emacs environments. */
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183 #define BASE_LEADING_CODE_P(c) (0)
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184 #define CHAR_CHARSET(c) 0
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185 #define CHARSET_LEADING_CODE_BASE(c) 0
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186 #define WORD_BOUNDARY_P(c1, c2) (0)
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187 #define CHAR_HEAD_P(p) (1)
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188 #define SINGLE_BYTE_CHAR_P(c) (1)
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189 #define SAME_CHARSET_P(c1, c2) (1)
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190 #define MULTIBYTE_FORM_LENGTH(p, s) (1)
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191 #define STRING_CHAR(p, s) (*(p))
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192 #define RE_STRING_CHAR STRING_CHAR
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193 #define STRING_CHAR_AND_LENGTH(p, s, actual_len) ((actual_len) = 1, *(p))
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194 #define GET_CHAR_BEFORE_2(c, p, str1, end1, str2, end2) \
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195 (c = ((p) == (str2) ? *((end1) - 1) : *((p) - 1)))
441
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196 #endif /* not emacs */
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197
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198 #ifndef RE_TRANSLATE
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199 #define RE_TRANSLATE(TBL, C) ((unsigned char)(TBL)[C])
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200 #define RE_TRANSLATE_P(TBL) (TBL)
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201 #endif
441
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202
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diff changeset
203 /* Get the interface, including the syntax bits. */
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204 #include "regex.h"
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diff changeset
205
1965
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diff changeset
206 /* isalpha etc. are used for the character classes. */
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diff changeset
207 #include <ctype.h>
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208
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diff changeset
209 #ifdef emacs
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210
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diff changeset
211 /* 1 if C is an ASCII character. */
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diff changeset
212 #define IS_REAL_ASCII(c) ((c) < 0200)
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213
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diff changeset
214 /* 1 if C is a unibyte character. */
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diff changeset
215 #define ISUNIBYTE(c) (SINGLE_BYTE_CHAR_P ((c)))
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diff changeset
216
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diff changeset
217 /* The Emacs definitions should not be directly affected by locales. */
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diff changeset
218
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diff changeset
219 /* In Emacs, these are only used for single-byte characters. */
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diff changeset
220 #define ISDIGIT(c) ((c) >= '0' && (c) <= '9')
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diff changeset
221 #define ISCNTRL(c) ((c) < ' ')
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diff changeset
222 #define ISXDIGIT(c) (((c) >= '0' && (c) <= '9') \
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diff changeset
223 || ((c) >= 'a' && (c) <= 'f') \
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diff changeset
224 || ((c) >= 'A' && (c) <= 'F'))
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diff changeset
225
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diff changeset
226 /* This is only used for single-byte characters. */
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diff changeset
227 #define ISBLANK(c) ((c) == ' ' || (c) == '\t')
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diff changeset
228
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diff changeset
229 /* The rest must handle multibyte characters. */
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diff changeset
230
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diff changeset
231 #define ISGRAPH(c) (SINGLE_BYTE_CHAR_P (c) \
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diff changeset
232 ? (c) > ' ' && !((c) >= 0177 && (c) <= 0237) \
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diff changeset
233 : 1)
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diff changeset
234
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
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diff changeset
235 #define ISPRINT(c) (SINGLE_BYTE_CHAR_P (c) \
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diff changeset
236 ? (c) >= ' ' && !((c) >= 0177 && (c) <= 0237) \
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diff changeset
237 : 1)
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diff changeset
238
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
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diff changeset
239 #define ISALNUM(c) (IS_REAL_ASCII (c) \
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diff changeset
240 ? (((c) >= 'a' && (c) <= 'z') \
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diff changeset
241 || ((c) >= 'A' && (c) <= 'Z') \
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diff changeset
242 || ((c) >= '0' && (c) <= '9')) \
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diff changeset
243 : SYNTAX (c) == Sword)
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diff changeset
244
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
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diff changeset
245 #define ISALPHA(c) (IS_REAL_ASCII (c) \
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diff changeset
246 ? (((c) >= 'a' && (c) <= 'z') \
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diff changeset
247 || ((c) >= 'A' && (c) <= 'Z')) \
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diff changeset
248 : SYNTAX (c) == Sword)
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diff changeset
249
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
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diff changeset
250 #define ISLOWER(c) (LOWERCASEP (c))
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251
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252 #define ISPUNCT(c) (IS_REAL_ASCII (c) \
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253 ? ((c) > ' ' && (c) < 0177 \
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254 && !(((c) >= 'a' && (c) <= 'z') \
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255 || ((c) >= 'A' && (c) <= 'Z') \
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256 || ((c) >= '0' && (c) <= '9'))) \
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257 : SYNTAX (c) != Sword)
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258
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259 #define ISSPACE(c) (SYNTAX (c) == Swhitespace)
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260
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261 #define ISUPPER(c) (UPPERCASEP (c))
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262
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263 #define ISWORD(c) (SYNTAX (c) == Sword)
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264
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265 #else /* not emacs */
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266
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267 /* Jim Meyering writes:
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268
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269 "... Some ctype macros are valid only for character codes that
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270 isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
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271 using /bin/cc or gcc but without giving an ansi option). So, all
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272 ctype uses should be through macros like ISPRINT... If
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273 STDC_HEADERS is defined, then autoconf has verified that the ctype
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274 macros don't need to be guarded with references to isascii. ...
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275 Defining isascii to 1 should let any compiler worth its salt
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276 eliminate the && through constant folding." */
441
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277
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278 #if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
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279 #define ISASCII(c) 1
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280 #else
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281 #define ISASCII(c) isascii(c)
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282 #endif
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283
1965
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284 /* 1 if C is an ASCII character. */
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285 #define IS_REAL_ASCII(c) ((c) < 0200)
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286
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diff changeset
287 /* This distinction is not meaningful, except in Emacs. */
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288 #define ISUNIBYTE(c) 1
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289
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290 #define ISDIGIT(c) (ISASCII (c) && isdigit (c))
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291 #define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
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292 #define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
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293
441
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294 #ifdef isblank
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295 #define ISBLANK(c) (ISASCII (c) && isblank (c))
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296 #else
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297 #define ISBLANK(c) ((c) == ' ' || (c) == '\t')
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298 #endif
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299 #ifdef isgraph
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300 #define ISGRAPH(c) (ISASCII (c) && isgraph (c))
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301 #else
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302 #define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c))
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303 #endif
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304
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305 #define ISPRINT(c) (ISASCII (c) && isprint (c))
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306 #define ISDIGIT(c) (ISASCII (c) && isdigit (c))
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307 #define ISALNUM(c) (ISASCII (c) && isalnum (c))
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308 #define ISALPHA(c) (ISASCII (c) && isalpha (c))
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309 #define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
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310 #define ISLOWER(c) (ISASCII (c) && islower (c))
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311 #define ISPUNCT(c) (ISASCII (c) && ispunct (c))
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312 #define ISSPACE(c) (ISASCII (c) && isspace (c))
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313 #define ISUPPER(c) (ISASCII (c) && isupper (c))
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314 #define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
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315
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316 #define ISWORD(c) ISALPHA(c)
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317
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318 #endif /* not emacs */
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319
441
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320 #ifndef NULL
447
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321 #define NULL (void *)0
441
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322 #endif
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323
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324 /* We remove any previous definition of `SIGN_EXTEND_CHAR',
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325 since ours (we hope) works properly with all combinations of
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326 machines, compilers, `char' and `unsigned char' argument types.
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327 (Per Bothner suggested the basic approach.) */
441
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328 #undef SIGN_EXTEND_CHAR
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329 #if __STDC__
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330 #define SIGN_EXTEND_CHAR(c) ((signed char) (c))
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331 #else /* not __STDC__ */
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332 /* As in Harbison and Steele. */
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333 #define SIGN_EXTEND_CHAR(c) ((((unsigned char) (c)) ^ 128) - 128)
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334 #endif
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335
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336 /* Should we use malloc or alloca? If REGEX_MALLOC is not defined, we
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337 use `alloca' instead of `malloc'. This is because using malloc in
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338 re_search* or re_match* could cause memory leaks when C-g is used in
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339 Emacs; also, malloc is slower and causes storage fragmentation. On
515
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340 the other hand, malloc is more portable, and easier to debug.
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341
441
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342 Because we sometimes use alloca, some routines have to be macros,
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343 not functions -- `alloca'-allocated space disappears at the end of the
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344 function it is called in. */
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345
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346 #ifdef REGEX_MALLOC
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347
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348 #define REGEX_ALLOCATE malloc
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349 #define REGEX_REALLOCATE(source, osize, nsize) realloc (source, nsize)
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350 #define REGEX_FREE free
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351
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352 #else /* not REGEX_MALLOC */
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353
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354 /* Emacs already defines alloca, sometimes. */
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355 #ifndef alloca
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356
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357 /* Make alloca work the best possible way. */
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358 #ifdef __GNUC__
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359 #define alloca __builtin_alloca
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360 #else /* not __GNUC__ */
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361 #if HAVE_ALLOCA_H
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362 #include <alloca.h>
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363 #else /* not __GNUC__ or HAVE_ALLOCA_H */
503
2ee098e3c26c Don't declare alloca.
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364 #if 0 /* It is a bad idea to declare alloca. We always cast the result. */
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365 #ifndef _AIX /* Already did AIX, up at the top. */
441
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366 char *alloca ();
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367 #endif /* not _AIX */
503
2ee098e3c26c Don't declare alloca.
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diff changeset
368 #endif
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369 #endif /* not HAVE_ALLOCA_H */
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370 #endif /* not __GNUC__ */
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371
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diff changeset
372 #endif /* not alloca */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
373
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
374 #define REGEX_ALLOCATE alloca
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
375
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
376 /* Assumes a `char *destination' variable. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
377 #define REGEX_REALLOCATE(source, osize, nsize) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
378 (destination = (char *) alloca (nsize), \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
379 bcopy (source, destination, osize), \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
380 destination)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
381
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
382 /* No need to do anything to free, after alloca. */
442
a7b85a203afa [REGEX_FREE]: Use ((void)0) instead of just (0).
Jim Meyering <jim@meyering.net>
parents: 441
diff changeset
383 #define REGEX_FREE(arg) ((void)0) /* Do nothing! But inhibit gcc warning. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
384
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
385 #endif /* not REGEX_MALLOC */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
386
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
387 /* Define how to allocate the failure stack. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
388
463
8b8df28857af Fix conditional.
Karl Heuer <kwzh@gnu.org>
parents: 462
diff changeset
389 #if defined (REL_ALLOC) && defined (REGEX_MALLOC)
462
115ffc5a3b13 Don't use relocatable allocator.
Richard Stallman <rms@gnu.org>
parents: 460
diff changeset
390
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
391 #define REGEX_ALLOCATE_STACK(size) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
392 r_alloc (&failure_stack_ptr, (size))
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
393 #define REGEX_REALLOCATE_STACK(source, osize, nsize) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
394 r_re_alloc (&failure_stack_ptr, (nsize))
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
395 #define REGEX_FREE_STACK(ptr) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
396 r_alloc_free (&failure_stack_ptr)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
397
462
115ffc5a3b13 Don't use relocatable allocator.
Richard Stallman <rms@gnu.org>
parents: 460
diff changeset
398 #else /* not using relocating allocator */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
399
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
400 #ifdef REGEX_MALLOC
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
401
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
402 #define REGEX_ALLOCATE_STACK malloc
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
403 #define REGEX_REALLOCATE_STACK(source, osize, nsize) realloc (source, nsize)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
404 #define REGEX_FREE_STACK free
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
405
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
406 #else /* not REGEX_MALLOC */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
407
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
408 #define REGEX_ALLOCATE_STACK alloca
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
409
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
410 #define REGEX_REALLOCATE_STACK(source, osize, nsize) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
411 REGEX_REALLOCATE (source, osize, nsize)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
412 /* No need to explicitly free anything. */
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
413 #define REGEX_FREE_STACK(arg) ((void)0)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
414
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
415 #endif /* not REGEX_MALLOC */
462
115ffc5a3b13 Don't use relocatable allocator.
Richard Stallman <rms@gnu.org>
parents: 460
diff changeset
416 #endif /* not using relocating allocator */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
417
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
418
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
419 /* True if `size1' is non-NULL and PTR is pointing anywhere inside
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
420 `string1' or just past its end. This works if PTR is NULL, which is
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
421 a good thing. */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
422 #define FIRST_STRING_P(ptr) \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
423 (size1 && string1 <= (ptr) && (ptr) <= string1 + size1)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
424
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
425 /* (Re)Allocate N items of type T using malloc, or fail. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
426 #define TALLOC(n, t) ((t *) malloc ((n) * sizeof (t)))
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
427 #define RETALLOC(addr, n, t) ((addr) = (t *) realloc (addr, (n) * sizeof (t)))
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
428 #define RETALLOC_IF(addr, n, t) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
429 if (addr) RETALLOC((addr), (n), t); else (addr) = TALLOC ((n), t)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
430 #define REGEX_TALLOC(n, t) ((t *) REGEX_ALLOCATE ((n) * sizeof (t)))
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
431
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
432 #define BYTEWIDTH 8 /* In bits. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
433
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
434 #define STREQ(s1, s2) ((strcmp (s1, s2) == 0))
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
435
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
436 #undef MAX
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
437 #undef MIN
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
438 #define MAX(a, b) ((a) > (b) ? (a) : (b))
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
439 #define MIN(a, b) ((a) < (b) ? (a) : (b))
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
440
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
441 /* Type of source-pattern and string chars. */
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
442 typedef const unsigned char re_char;
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
443
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
444 typedef char boolean;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
445 #define false 0
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
446 #define true 1
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
447
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
448 static int re_match_2_internal ();
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
449
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
450 /* These are the command codes that appear in compiled regular
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
451 expressions. Some opcodes are followed by argument bytes. A
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
452 command code can specify any interpretation whatsoever for its
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
453 arguments. Zero bytes may appear in the compiled regular expression. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
454
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
455 typedef enum
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
456 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
457 no_op = 0,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
458
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
459 /* Succeed right away--no more backtracking. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
460 succeed,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
461
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
462 /* Followed by one byte giving n, then by n literal bytes. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
463 exactn,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
464
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
465 /* Matches any (more or less) character. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
466 anychar,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
467
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
468 /* Matches any one char belonging to specified set. First
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
469 following byte is number of bitmap bytes. Then come bytes
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
470 for a bitmap saying which chars are in. Bits in each byte
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
471 are ordered low-bit-first. A character is in the set if its
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
472 bit is 1. A character too large to have a bit in the map is
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
473 automatically not in the set.
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
474
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
475 If the length byte has the 0x80 bit set, then that stuff
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
476 is followed by a range table:
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
477 2 bytes of flags for character sets (low 8 bits, high 8 bits)
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
478 See RANGE_TABLE_WORK_BITS below.
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
479 2 bytes, the number of pairs that follow
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
480 pairs, each 2 multibyte characters,
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
481 each multibyte character represented as 3 bytes. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
482 charset,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
483
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
484 /* Same parameters as charset, but match any character that is
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
485 not one of those specified. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
486 charset_not,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
487
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
488 /* Start remembering the text that is matched, for storing in a
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
489 register. Followed by one byte with the register number, in
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
490 the range 0 to one less than the pattern buffer's re_nsub
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
491 field. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
492 start_memory,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
493
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
494 /* Stop remembering the text that is matched and store it in a
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
495 memory register. Followed by one byte with the register
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
496 number, in the range 0 to one less than `re_nsub' in the
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
497 pattern buffer. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
498 stop_memory,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
499
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
500 /* Match a duplicate of something remembered. Followed by one
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
501 byte containing the register number. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
502 duplicate,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
503
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
504 /* Fail unless at beginning of line. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
505 begline,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
506
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
507 /* Fail unless at end of line. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
508 endline,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
509
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
510 /* Succeeds if at beginning of buffer (if emacs) or at beginning
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
511 of string to be matched (if not). */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
512 begbuf,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
513
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
514 /* Analogously, for end of buffer/string. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
515 endbuf,
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
516
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
517 /* Followed by two byte relative address to which to jump. */
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
518 jump,
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
519
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
520 /* Followed by two-byte relative address of place to resume at
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
521 in case of failure. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
522 on_failure_jump,
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
523
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
524 /* Like on_failure_jump, but pushes a placeholder instead of the
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
525 current string position when executed. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
526 on_failure_keep_string_jump,
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
527
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
528 /* Just like `on_failure_jump', except that it checks that we
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
529 don't get stuck in an infinite loop (matching an empty string
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
530 indefinitely). */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
531 on_failure_jump_loop,
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
532
2370
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
533 /* Just like `on_failure_jump_loop', except that it checks for
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
534 a different kind of loop (the kind that shows up with non-greedy
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
535 operators). This operation has to be immediately preceded
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
536 by a `no_op'. */
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
537 on_failure_jump_nastyloop,
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
538
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
539 /* A smart `on_failure_jump' used for greedy * and + operators.
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
540 It analyses the loop before which it is put and if the
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
541 loop does not require backtracking, it changes itself to
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
542 `on_failure_keep_string_jump' and short-circuits the loop,
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
543 else it just defaults to changing itself into `on_failure_jump'.
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
544 It assumes that it is pointing to just past a `jump'. */
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
545 on_failure_jump_smart,
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
546
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
547 /* Followed by two-byte relative address and two-byte number n.
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
548 After matching N times, jump to the address upon failure.
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
549 Does not work if N starts at 0: use on_failure_jump_loop
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
550 instead. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
551 succeed_n,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
552
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
553 /* Followed by two-byte relative address, and two-byte number n.
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
554 Jump to the address N times, then fail. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
555 jump_n,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
556
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
557 /* Set the following two-byte relative address to the
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
558 subsequent two-byte number. The address *includes* the two
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
559 bytes of number. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
560 set_number_at,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
561
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
562 wordbeg, /* Succeeds if at word beginning. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
563 wordend, /* Succeeds if at word end. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
564
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
565 wordbound, /* Succeeds if at a word boundary. */
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
566 notwordbound, /* Succeeds if not at a word boundary. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
567
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
568 /* Matches any character whose syntax is specified. Followed by
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
569 a byte which contains a syntax code, e.g., Sword. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
570 syntaxspec,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
571
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
572 /* Matches any character whose syntax is not that specified. */
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
573 notsyntaxspec
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
574
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
575 #ifdef emacs
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
576 ,before_dot, /* Succeeds if before point. */
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
577 at_dot, /* Succeeds if at point. */
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
578 after_dot, /* Succeeds if after point. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
579
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
580 /* Matches any character whose category-set contains the specified
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
581 category. The operator is followed by a byte which contains a
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
582 category code (mnemonic ASCII character). */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
583 categoryspec,
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
584
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
585 /* Matches any character whose category-set does not contain the
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
586 specified category. The operator is followed by a byte which
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
587 contains the category code (mnemonic ASCII character). */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
588 notcategoryspec
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
589 #endif /* emacs */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
590 } re_opcode_t;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
591
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
592 /* Common operations on the compiled pattern. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
593
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
594 /* Store NUMBER in two contiguous bytes starting at DESTINATION. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
595
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
596 #define STORE_NUMBER(destination, number) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
597 do { \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
598 (destination)[0] = (number) & 0377; \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
599 (destination)[1] = (number) >> 8; \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
600 } while (0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
601
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
602 /* Same as STORE_NUMBER, except increment DESTINATION to
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
603 the byte after where the number is stored. Therefore, DESTINATION
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
604 must be an lvalue. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
605
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
606 #define STORE_NUMBER_AND_INCR(destination, number) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
607 do { \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
608 STORE_NUMBER (destination, number); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
609 (destination) += 2; \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
610 } while (0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
611
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
612 /* Put into DESTINATION a number stored in two contiguous bytes starting
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
613 at SOURCE. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
614
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
615 #define EXTRACT_NUMBER(destination, source) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
616 do { \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
617 (destination) = *(source) & 0377; \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
618 (destination) += SIGN_EXTEND_CHAR (*((source) + 1)) << 8; \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
619 } while (0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
620
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
621 #ifdef DEBUG
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
622 static void
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
623 extract_number (dest, source)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
624 int *dest;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
625 unsigned char *source;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
626 {
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
627 int temp = SIGN_EXTEND_CHAR (*(source + 1));
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
628 *dest = *source & 0377;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
629 *dest += temp << 8;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
630 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
631
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
632 #ifndef EXTRACT_MACROS /* To debug the macros. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
633 #undef EXTRACT_NUMBER
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
634 #define EXTRACT_NUMBER(dest, src) extract_number (&dest, src)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
635 #endif /* not EXTRACT_MACROS */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
636
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
637 #endif /* DEBUG */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
638
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
639 /* Same as EXTRACT_NUMBER, except increment SOURCE to after the number.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
640 SOURCE must be an lvalue. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
641
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
642 #define EXTRACT_NUMBER_AND_INCR(destination, source) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
643 do { \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
644 EXTRACT_NUMBER (destination, source); \
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
645 (source) += 2; \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
646 } while (0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
647
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
648 #ifdef DEBUG
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
649 static void
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
650 extract_number_and_incr (destination, source)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
651 int *destination;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
652 unsigned char **source;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
653 {
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
654 extract_number (destination, *source);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
655 *source += 2;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
656 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
657
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
658 #ifndef EXTRACT_MACROS
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
659 #undef EXTRACT_NUMBER_AND_INCR
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
660 #define EXTRACT_NUMBER_AND_INCR(dest, src) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
661 extract_number_and_incr (&dest, &src)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
662 #endif /* not EXTRACT_MACROS */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
663
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
664 #endif /* DEBUG */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
665
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
666 /* Store a multibyte character in three contiguous bytes starting
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
667 DESTINATION, and increment DESTINATION to the byte after where the
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
668 character is stored. Therefore, DESTINATION must be an lvalue. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
669
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
670 #define STORE_CHARACTER_AND_INCR(destination, character) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
671 do { \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
672 (destination)[0] = (character) & 0377; \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
673 (destination)[1] = ((character) >> 8) & 0377; \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
674 (destination)[2] = (character) >> 16; \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
675 (destination) += 3; \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
676 } while (0)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
677
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
678 /* Put into DESTINATION a character stored in three contiguous bytes
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
679 starting at SOURCE. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
680
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
681 #define EXTRACT_CHARACTER(destination, source) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
682 do { \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
683 (destination) = ((source)[0] \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
684 | ((source)[1] << 8) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
685 | ((source)[2] << 16)); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
686 } while (0)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
687
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
688
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
689 /* Macros for charset. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
690
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
691 /* Size of bitmap of charset P in bytes. P is a start of charset,
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
692 i.e. *P is (re_opcode_t) charset or (re_opcode_t) charset_not. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
693 #define CHARSET_BITMAP_SIZE(p) ((p)[1] & 0x7F)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
694
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
695 /* Nonzero if charset P has range table. */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
696 #define CHARSET_RANGE_TABLE_EXISTS_P(p) ((p)[1] & 0x80)
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
697
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
698 /* Return the address of range table of charset P. But not the start
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
699 of table itself, but the before where the number of ranges is
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
700 stored. `2 +' means to skip re_opcode_t and size of bitmap,
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
701 and the 2 bytes of flags at the start of the range table. */
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
702 #define CHARSET_RANGE_TABLE(p) (&(p)[4 + CHARSET_BITMAP_SIZE (p)])
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
703
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
704 /* Extract the bit flags that start a range table. */
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
705 #define CHARSET_RANGE_TABLE_BITS(p) \
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
706 ((p)[2 + CHARSET_BITMAP_SIZE (p)] \
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
707 + (p)[3 + CHARSET_BITMAP_SIZE (p)] * 0x100)
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
708
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
709 /* Test if C is listed in the bitmap of charset P. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
710 #define CHARSET_LOOKUP_BITMAP(p, c) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
711 ((c) < CHARSET_BITMAP_SIZE (p) * BYTEWIDTH \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
712 && (p)[2 + (c) / BYTEWIDTH] & (1 << ((c) % BYTEWIDTH)))
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
713
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
714 /* Return the address of end of RANGE_TABLE. COUNT is number of
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
715 ranges (which is a pair of (start, end)) in the RANGE_TABLE. `* 2'
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
716 is start of range and end of range. `* 3' is size of each start
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
717 and end. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
718 #define CHARSET_RANGE_TABLE_END(range_table, count) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
719 ((range_table) + (count) * 2 * 3)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
720
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
721 /* Test if C is in RANGE_TABLE. A flag NOT is negated if C is in.
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
722 COUNT is number of ranges in RANGE_TABLE. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
723 #define CHARSET_LOOKUP_RANGE_TABLE_RAW(not, c, range_table, count) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
724 do \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
725 { \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
726 int range_start, range_end; \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
727 unsigned char *p; \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
728 unsigned char *range_table_end \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
729 = CHARSET_RANGE_TABLE_END ((range_table), (count)); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
730 \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
731 for (p = (range_table); p < range_table_end; p += 2 * 3) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
732 { \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
733 EXTRACT_CHARACTER (range_start, p); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
734 EXTRACT_CHARACTER (range_end, p + 3); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
735 \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
736 if (range_start <= (c) && (c) <= range_end) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
737 { \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
738 (not) = !(not); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
739 break; \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
740 } \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
741 } \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
742 } \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
743 while (0)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
744
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
745 /* Test if C is in range table of CHARSET. The flag NOT is negated if
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
746 C is listed in it. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
747 #define CHARSET_LOOKUP_RANGE_TABLE(not, c, charset) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
748 do \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
749 { \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
750 /* Number of ranges in range table. */ \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
751 int count; \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
752 unsigned char *range_table = CHARSET_RANGE_TABLE (charset); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
753 \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
754 EXTRACT_NUMBER_AND_INCR (count, range_table); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
755 CHARSET_LOOKUP_RANGE_TABLE_RAW ((not), (c), range_table, count); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
756 } \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
757 while (0)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
758
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
759 /* If DEBUG is defined, Regex prints many voluminous messages about what
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
760 it is doing (if the variable `debug' is nonzero). If linked with the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
761 main program in `iregex.c', you can enter patterns and strings
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
762 interactively. And if linked with the main program in `main.c' and
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
763 the other test files, you can run the already-written tests. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
764
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
765 #ifdef DEBUG
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
766
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
767 /* We use standard I/O for debugging. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
768 #include <stdio.h>
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
769
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
770 /* It is useful to test things that ``must'' be true when debugging. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
771 #include <assert.h>
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
772
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
773 static int debug = -100000;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
774
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
775 #define DEBUG_STATEMENT(e) e
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
776 #define DEBUG_PRINT1(x) if (debug > 0) printf (x)
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
777 #define DEBUG_PRINT2(x1, x2) if (debug > 0) printf (x1, x2)
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
778 #define DEBUG_PRINT3(x1, x2, x3) if (debug > 0) printf (x1, x2, x3)
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
779 #define DEBUG_PRINT4(x1, x2, x3, x4) if (debug > 0) printf (x1, x2, x3, x4)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
780 #define DEBUG_PRINT_COMPILED_PATTERN(p, s, e) \
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
781 if (debug > 0) print_partial_compiled_pattern (s, e)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
782 #define DEBUG_PRINT_DOUBLE_STRING(w, s1, sz1, s2, sz2) \
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
783 if (debug > 0) print_double_string (w, s1, sz1, s2, sz2)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
784
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
785
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
786 /* Print the fastmap in human-readable form. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
787
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
788 void
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
789 print_fastmap (fastmap)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
790 char *fastmap;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
791 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
792 unsigned was_a_range = 0;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
793 unsigned i = 0;
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
794
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
795 while (i < (1 << BYTEWIDTH))
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
796 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
797 if (fastmap[i++])
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
798 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
799 was_a_range = 0;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
800 putchar (i - 1);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
801 while (i < (1 << BYTEWIDTH) && fastmap[i])
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
802 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
803 was_a_range = 1;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
804 i++;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
805 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
806 if (was_a_range)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
807 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
808 printf ("-");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
809 putchar (i - 1);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
810 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
811 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
812 }
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
813 putchar ('\n');
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
814 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
815
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
816
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
817 /* Print a compiled pattern string in human-readable form, starting at
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
818 the START pointer into it and ending just before the pointer END. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
819
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
820 void
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
821 print_partial_compiled_pattern (start, end)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
822 unsigned char *start;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
823 unsigned char *end;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
824 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
825 int mcnt, mcnt2;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
826 unsigned char *p = start;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
827 unsigned char *pend = end;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
828
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
829 if (start == NULL)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
830 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
831 printf ("(null)\n");
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
832 return;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
833 }
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
834
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
835 /* Loop over pattern commands. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
836 while (p < pend)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
837 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
838 printf ("%d:\t", p - start);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
839
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
840 switch ((re_opcode_t) *p++)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
841 {
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
842 case no_op:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
843 printf ("/no_op");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
844 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
845
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
846 case succeed:
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
847 printf ("/succeed");
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
848 break;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
849
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
850 case exactn:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
851 mcnt = *p++;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
852 printf ("/exactn/%d", mcnt);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
853 do
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
854 {
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
855 putchar ('/');
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
856 putchar (*p++);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
857 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
858 while (--mcnt);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
859 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
860
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
861 case start_memory:
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
862 printf ("/start_memory/%d", *p++);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
863 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
864
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
865 case stop_memory:
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
866 printf ("/stop_memory/%d", *p++);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
867 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
868
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
869 case duplicate:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
870 printf ("/duplicate/%d", *p++);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
871 break;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
872
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
873 case anychar:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
874 printf ("/anychar");
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
875 break;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
876
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
877 case charset:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
878 case charset_not:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
879 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
880 register int c, last = -100;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
881 register int in_range = 0;
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
882 int length = CHARSET_BITMAP_SIZE (p - 1);
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
883 int has_range_table = CHARSET_RANGE_TABLE_EXISTS_P (p - 1);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
884
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
885 printf ("/charset [%s",
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
886 (re_opcode_t) *(p - 1) == charset_not ? "^" : "");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
887
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
888 assert (p + *p < pend);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
889
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
890 for (c = 0; c < 256; c++)
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
891 if (c / 8 < length
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
892 && (p[1 + (c/8)] & (1 << (c % 8))))
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
893 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
894 /* Are we starting a range? */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
895 if (last + 1 == c && ! in_range)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
896 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
897 putchar ('-');
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
898 in_range = 1;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
899 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
900 /* Have we broken a range? */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
901 else if (last + 1 != c && in_range)
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
902 {
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
903 putchar (last);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
904 in_range = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
905 }
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
906
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
907 if (! in_range)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
908 putchar (c);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
909
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
910 last = c;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
911 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
912
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
913 if (in_range)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
914 putchar (last);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
915
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
916 putchar (']');
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
917
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
918 p += 1 + length;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
919
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
920 if (has_range_table)
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
921 {
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
922 int count;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
923 printf ("has-range-table");
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
924
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
925 /* ??? Should print the range table; for now, just skip it. */
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
926 p += 2; /* skip range table bits */
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
927 EXTRACT_NUMBER_AND_INCR (count, p);
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
928 p = CHARSET_RANGE_TABLE_END (p, count);
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
929 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
930 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
931 break;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
932
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
933 case begline:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
934 printf ("/begline");
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
935 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
936
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
937 case endline:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
938 printf ("/endline");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
939 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
940
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
941 case on_failure_jump:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
942 extract_number_and_incr (&mcnt, &p);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
943 printf ("/on_failure_jump to %d", p + mcnt - start);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
944 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
945
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
946 case on_failure_keep_string_jump:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
947 extract_number_and_incr (&mcnt, &p);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
948 printf ("/on_failure_keep_string_jump to %d", p + mcnt - start);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
949 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
950
2370
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
951 case on_failure_jump_nastyloop:
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
952 extract_number_and_incr (&mcnt, &p);
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
953 printf ("/on_failure_jump_nastyloop to %d", p + mcnt - start);
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
954 break;
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
955
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
956 case on_failure_jump_loop:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
957 extract_number_and_incr (&mcnt, &p);
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
958 printf ("/on_failure_jump_loop to %d", p + mcnt - start);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
959 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
960
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
961 case on_failure_jump_smart:
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
962 extract_number_and_incr (&mcnt, &p);
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
963 printf ("/on_failure_jump_smart to %d", p + mcnt - start);
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
964 break;
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
965
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
966 case jump:
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
967 extract_number_and_incr (&mcnt, &p);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
968 printf ("/jump to %d", p + mcnt - start);
679
b088267ea1c8 Clean up whitespace.
Richard Stallman <rms@gnu.org>
parents: 678
diff changeset
969 break;
b088267ea1c8 Clean up whitespace.
Richard Stallman <rms@gnu.org>
parents: 678
diff changeset
970
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
971 case succeed_n:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
972 extract_number_and_incr (&mcnt, &p);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
973 extract_number_and_incr (&mcnt2, &p);
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
974 printf ("/succeed_n to %d, %d times", p - 2 + mcnt - start, mcnt2);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
975 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
976
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
977 case jump_n:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
978 extract_number_and_incr (&mcnt, &p);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
979 extract_number_and_incr (&mcnt2, &p);
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
980 printf ("/jump_n to %d, %d times", p - 2 + mcnt - start, mcnt2);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
981 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
982
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
983 case set_number_at:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
984 extract_number_and_incr (&mcnt, &p);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
985 extract_number_and_incr (&mcnt2, &p);
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
986 printf ("/set_number_at location %d to %d", p - 2 + mcnt - start, mcnt2);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
987 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
988
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
989 case wordbound:
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
990 printf ("/wordbound");
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
991 break;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
992
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
993 case notwordbound:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
994 printf ("/notwordbound");
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
995 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
996
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
997 case wordbeg:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
998 printf ("/wordbeg");
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
999 break;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1000
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1001 case wordend:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1002 printf ("/wordend");
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1003
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
1004 case syntaxspec:
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
1005 printf ("/syntaxspec");
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
1006 mcnt = *p++;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
1007 printf ("/%d", mcnt);
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
1008 break;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
1009
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
1010 case notsyntaxspec:
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
1011 printf ("/notsyntaxspec");
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
1012 mcnt = *p++;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
1013 printf ("/%d", mcnt);
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
1014 break;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
1015
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1016 #ifdef emacs
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1017 case before_dot:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1018 printf ("/before_dot");
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1019 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1020
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1021 case at_dot:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1022 printf ("/at_dot");
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1023 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1024
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1025 case after_dot:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1026 printf ("/after_dot");
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1027 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1028
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
1029 case categoryspec:
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
1030 printf ("/categoryspec");
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1031 mcnt = *p++;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1032 printf ("/%d", mcnt);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1033 break;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1034
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
1035 case notcategoryspec:
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
1036 printf ("/notcategoryspec");
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1037 mcnt = *p++;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1038 printf ("/%d", mcnt);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1039 break;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1040 #endif /* emacs */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1041
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1042 case begbuf:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1043 printf ("/begbuf");
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1044 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1045
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1046 case endbuf:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1047 printf ("/endbuf");
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1048 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1049
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1050 default:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1051 printf ("?%d", *(p-1));
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1052 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1053
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1054 putchar ('\n');
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1055 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1056
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1057 printf ("%d:\tend of pattern.\n", p - start);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1058 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1059
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1060
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1061 void
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1062 print_compiled_pattern (bufp)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1063 struct re_pattern_buffer *bufp;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1064 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1065 unsigned char *buffer = bufp->buffer;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1066
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1067 print_partial_compiled_pattern (buffer, buffer + bufp->used);
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1068 printf ("%ld bytes used/%ld bytes allocated.\n", bufp->used, bufp->allocated);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1069
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1070 if (bufp->fastmap_accurate && bufp->fastmap)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1071 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1072 printf ("fastmap: ");
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1073 print_fastmap (bufp->fastmap);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1074 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1075
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1076 printf ("re_nsub: %d\t", bufp->re_nsub);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1077 printf ("regs_alloc: %d\t", bufp->regs_allocated);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1078 printf ("can_be_null: %d\t", bufp->can_be_null);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1079 printf ("newline_anchor: %d\n", bufp->newline_anchor);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1080 printf ("no_sub: %d\t", bufp->no_sub);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1081 printf ("not_bol: %d\t", bufp->not_bol);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1082 printf ("not_eol: %d\t", bufp->not_eol);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1083 printf ("syntax: %d\n", bufp->syntax);
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1084 fflush (stdout);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1085 /* Perhaps we should print the translate table? */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1086 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1087
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1088
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1089 void
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1090 print_double_string (where, string1, size1, string2, size2)
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1091 re_char *where;
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1092 re_char *string1;
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1093 re_char *string2;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1094 int size1;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1095 int size2;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1096 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1097 unsigned this_char;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1098
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1099 if (where == NULL)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1100 printf ("(null)");
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1101 else
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1102 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1103 if (FIRST_STRING_P (where))
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1104 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1105 for (this_char = where - string1; this_char < size1; this_char++)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1106 putchar (string1[this_char]);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1107
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1108 where = string2;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1109 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1110
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1111 for (this_char = where - string2; this_char < size2; this_char++)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1112 putchar (string2[this_char]);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1113 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1114 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1115
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1116 #else /* not DEBUG */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1117
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1118 #undef assert
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1119 #define assert(e)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1120
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1121 #define DEBUG_STATEMENT(e)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1122 #define DEBUG_PRINT1(x)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1123 #define DEBUG_PRINT2(x1, x2)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1124 #define DEBUG_PRINT3(x1, x2, x3)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1125 #define DEBUG_PRINT4(x1, x2, x3, x4)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1126 #define DEBUG_PRINT_COMPILED_PATTERN(p, s, e)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1127 #define DEBUG_PRINT_DOUBLE_STRING(w, s1, sz1, s2, sz2)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1128
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1129 #endif /* not DEBUG */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1130
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1131 /* Set by `re_set_syntax' to the current regexp syntax to recognize. Can
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1132 also be assigned to arbitrarily: each pattern buffer stores its own
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1133 syntax, so it can be changed between regex compilations. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1134 /* This has no initializer because initialized variables in Emacs
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1135 become read-only after dumping. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1136 reg_syntax_t re_syntax_options;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1137
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1138
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1139 /* Specify the precise syntax of regexps for compilation. This provides
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1140 for compatibility for various utilities which historically have
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1141 different, incompatible syntaxes.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1142
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1143 The argument SYNTAX is a bit mask comprised of the various bits
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1144 defined in regex.h. We return the old syntax. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1145
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1146 reg_syntax_t
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1147 re_set_syntax (syntax)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1148 reg_syntax_t syntax;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1149 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1150 reg_syntax_t ret = re_syntax_options;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1151
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1152 re_syntax_options = syntax;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1153 return ret;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1154 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1155
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1156 /* This table gives an error message for each of the error codes listed
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1157 in regex.h. Obviously the order here has to be same as there.
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1158 POSIX doesn't require that we do anything for REG_NOERROR,
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1159 but why not be nice? */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1160
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1161 static const char *re_error_msgid[] =
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1162 {
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1163 gettext_noop ("Success"), /* REG_NOERROR */
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1164 gettext_noop ("No match"), /* REG_NOMATCH */
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1165 gettext_noop ("Invalid regular expression"), /* REG_BADPAT */
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1166 gettext_noop ("Invalid collation character"), /* REG_ECOLLATE */
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1167 gettext_noop ("Invalid character class name"), /* REG_ECTYPE */
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1168 gettext_noop ("Trailing backslash"), /* REG_EESCAPE */
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1169 gettext_noop ("Invalid back reference"), /* REG_ESUBREG */
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1170 gettext_noop ("Unmatched [ or [^"), /* REG_EBRACK */
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1171 gettext_noop ("Unmatched ( or \\("), /* REG_EPAREN */
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1172 gettext_noop ("Unmatched \\{"), /* REG_EBRACE */
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1173 gettext_noop ("Invalid content of \\{\\}"), /* REG_BADBR */
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1174 gettext_noop ("Invalid range end"), /* REG_ERANGE */
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1175 gettext_noop ("Memory exhausted"), /* REG_ESPACE */
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1176 gettext_noop ("Invalid preceding regular expression"), /* REG_BADRPT */
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1177 gettext_noop ("Premature end of regular expression"), /* REG_EEND */
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1178 gettext_noop ("Regular expression too big"), /* REG_ESIZE */
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1179 gettext_noop ("Unmatched ) or \\)"), /* REG_ERPAREN */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1180 };
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1181
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1182 /* Avoiding alloca during matching, to placate r_alloc. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1183
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1184 /* Define MATCH_MAY_ALLOCATE unless we need to make sure that the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1185 searching and matching functions should not call alloca. On some
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1186 systems, alloca is implemented in terms of malloc, and if we're
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1187 using the relocating allocator routines, then malloc could cause a
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1188 relocation, which might (if the strings being searched are in the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1189 ralloc heap) shift the data out from underneath the regexp
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1190 routines.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1191
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1192 Here's another reason to avoid allocation: Emacs
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1193 processes input from X in a signal handler; processing X input may
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1194 call malloc; if input arrives while a matching routine is calling
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1195 malloc, then we're scrod. But Emacs can't just block input while
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1196 calling matching routines; then we don't notice interrupts when
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1197 they come in. So, Emacs blocks input around all regexp calls
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1198 except the matching calls, which it leaves unprotected, in the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1199 faith that they will not malloc. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1200
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1201 /* Normally, this is fine. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1202 #define MATCH_MAY_ALLOCATE
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1203
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1204 /* When using GNU C, we are not REALLY using the C alloca, no matter
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1205 what config.h may say. So don't take precautions for it. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1206 #ifdef __GNUC__
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1207 #undef C_ALLOCA
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1208 #endif
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1209
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1210 /* The match routines may not allocate if (1) they would do it with malloc
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1211 and (2) it's not safe for them to use malloc.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1212 Note that if REL_ALLOC is defined, matching would not use malloc for the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1213 failure stack, but we would still use it for the register vectors;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1214 so REL_ALLOC should not affect this. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1215 #if (defined (C_ALLOCA) || defined (REGEX_MALLOC)) && defined (emacs)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1216 #undef MATCH_MAY_ALLOCATE
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1217 #endif
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1218
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1219
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1220 /* Failure stack declarations and macros; both re_compile_fastmap and
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1221 re_match_2 use a failure stack. These have to be macros because of
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1222 REGEX_ALLOCATE_STACK. */
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1223
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1224
1156
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1225 /* Approximate number of failure points for which to initially allocate space
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1226 when matching. If this number is exceeded, we allocate more
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1227 space, so it is not a hard limit. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1228 #ifndef INIT_FAILURE_ALLOC
1156
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1229 #define INIT_FAILURE_ALLOC 20
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1230 #endif
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1231
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1232 /* Roughly the maximum number of failure points on the stack. Would be
1156
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1233 exactly that if always used TYPICAL_FAILURE_SIZE items each time we failed.
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1234 This is a variable only so users of regex can assign to it; we never
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1235 change it ourselves. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1236 #if defined (MATCH_MAY_ALLOCATE)
1156
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1237 /* Note that 4400 is enough to cause a crash on Alpha OSF/1,
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1238 whose default stack limit is 2mb. In order for a larger
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1239 value to work reliably, you have to try to make it accord
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1240 with the process stack limit. */
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1241 int re_max_failures = 40000;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1242 #else
1156
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1243 int re_max_failures = 4000;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1244 #endif
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1245
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1246 union fail_stack_elt
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1247 {
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1248 const unsigned char *pointer;
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1249 unsigned int integer;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1250 };
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1251
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1252 typedef union fail_stack_elt fail_stack_elt_t;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1253
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1254 typedef struct
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1255 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1256 fail_stack_elt_t *stack;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1257 unsigned size;
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1258 unsigned avail; /* Offset of next open position. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1259 unsigned frame; /* Offset of the cur constructed frame. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1260 } fail_stack_type;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1261
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1262 #define PATTERN_STACK_EMPTY() (fail_stack.avail == 0)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1263 #define FAIL_STACK_EMPTY() (fail_stack.frame == 0)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1264 #define FAIL_STACK_FULL() (fail_stack.avail == fail_stack.size)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1265
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1266
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1267 /* Define macros to initialize and free the failure stack.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1268 Do `return -2' if the alloc fails. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1269
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1270 #ifdef MATCH_MAY_ALLOCATE
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1271 #define INIT_FAIL_STACK() \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1272 do { \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1273 fail_stack.stack = (fail_stack_elt_t *) \
1156
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1274 REGEX_ALLOCATE_STACK (INIT_FAILURE_ALLOC * TYPICAL_FAILURE_SIZE \
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1275 * sizeof (fail_stack_elt_t)); \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1276 \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1277 if (fail_stack.stack == NULL) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1278 return -2; \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1279 \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1280 fail_stack.size = INIT_FAILURE_ALLOC; \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1281 fail_stack.avail = 0; \
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1282 fail_stack.frame = 0; \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1283 } while (0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1284
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1285 #define RESET_FAIL_STACK() REGEX_FREE_STACK (fail_stack.stack)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1286 #else
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1287 #define INIT_FAIL_STACK() \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1288 do { \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1289 fail_stack.avail = 0; \
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1290 fail_stack.frame = 0; \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1291 } while (0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1292
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
1293 #define RESET_FAIL_STACK() ((void)0)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1294 #endif
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1295
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1296
1156
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1297 /* Double the size of FAIL_STACK, up to a limit
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1298 which allows approximately `re_max_failures' items.
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1299
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1300 Return 1 if succeeds, and 0 if either ran out of memory
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1301 allocating space for it or it was already too large.
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1302
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1303 REGEX_REALLOCATE_STACK requires `destination' be declared. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1304
1156
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1305 /* Factor to increase the failure stack size by
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1306 when we increase it.
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1307 This used to be 2, but 2 was too wasteful
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1308 because the old discarded stacks added up to as much space
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1309 were as ultimate, maximum-size stack. */
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1310 #define FAIL_STACK_GROWTH_FACTOR 4
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1311
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1312 #define GROW_FAIL_STACK(fail_stack) \
1158
282562802f46 (GROW_FAIL_STACK): Fix test for stack size at max.
Karl Heuer <kwzh@gnu.org>
parents: 1157
diff changeset
1313 (((fail_stack).size * sizeof (fail_stack_elt_t) \
282562802f46 (GROW_FAIL_STACK): Fix test for stack size at max.
Karl Heuer <kwzh@gnu.org>
parents: 1157
diff changeset
1314 >= re_max_failures * TYPICAL_FAILURE_SIZE) \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1315 ? 0 \
1156
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1316 : ((fail_stack).stack \
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1317 = (fail_stack_elt_t *) \
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1318 REGEX_REALLOCATE_STACK ((fail_stack).stack, \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1319 (fail_stack).size * sizeof (fail_stack_elt_t), \
1156
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1320 MIN (re_max_failures * TYPICAL_FAILURE_SIZE, \
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1321 ((fail_stack).size * sizeof (fail_stack_elt_t) \
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1322 * FAIL_STACK_GROWTH_FACTOR))), \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1323 \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1324 (fail_stack).stack == NULL \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1325 ? 0 \
1157
5aa89bba935d (GROW_FAIL_STACK): Fix previous change:
Karl Heuer <kwzh@gnu.org>
parents: 1156
diff changeset
1326 : ((fail_stack).size \
5aa89bba935d (GROW_FAIL_STACK): Fix previous change:
Karl Heuer <kwzh@gnu.org>
parents: 1156
diff changeset
1327 = (MIN (re_max_failures * TYPICAL_FAILURE_SIZE, \
5aa89bba935d (GROW_FAIL_STACK): Fix previous change:
Karl Heuer <kwzh@gnu.org>
parents: 1156
diff changeset
1328 ((fail_stack).size * sizeof (fail_stack_elt_t) \
5aa89bba935d (GROW_FAIL_STACK): Fix previous change:
Karl Heuer <kwzh@gnu.org>
parents: 1156
diff changeset
1329 * FAIL_STACK_GROWTH_FACTOR)) \
5aa89bba935d (GROW_FAIL_STACK): Fix previous change:
Karl Heuer <kwzh@gnu.org>
parents: 1156
diff changeset
1330 / sizeof (fail_stack_elt_t)), \
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1331 1)))
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1332
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1333
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1334 /* Push pointer POINTER on FAIL_STACK.
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1335 Return 1 if was able to do so and 0 if ran out of memory allocating
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1336 space to do so. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1337 #define PUSH_PATTERN_OP(POINTER, FAIL_STACK) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1338 ((FAIL_STACK_FULL () \
1156
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1339 && !GROW_FAIL_STACK (FAIL_STACK)) \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1340 ? 0 \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1341 : ((FAIL_STACK).stack[(FAIL_STACK).avail++].pointer = POINTER, \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1342 1))
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1343 #define POP_PATTERN_OP() POP_FAILURE_POINTER ()
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1344
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1345 /* Push a pointer value onto the failure stack.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1346 Assumes the variable `fail_stack'. Probably should only
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1347 be called from within `PUSH_FAILURE_POINT'. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1348 #define PUSH_FAILURE_POINTER(item) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1349 fail_stack.stack[fail_stack.avail++].pointer = (unsigned char *) (item)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1350
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1351 /* This pushes an integer-valued item onto the failure stack.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1352 Assumes the variable `fail_stack'. Probably should only
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1353 be called from within `PUSH_FAILURE_POINT'. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1354 #define PUSH_FAILURE_INT(item) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1355 fail_stack.stack[fail_stack.avail++].integer = (item)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1356
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1357 /* Push a fail_stack_elt_t value onto the failure stack.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1358 Assumes the variable `fail_stack'. Probably should only
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1359 be called from within `PUSH_FAILURE_POINT'. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1360 #define PUSH_FAILURE_ELT(item) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1361 fail_stack.stack[fail_stack.avail++] = (item)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1362
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1363 /* These three POP... operations complement the three PUSH... operations.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1364 All assume that `fail_stack' is nonempty. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1365 #define POP_FAILURE_POINTER() fail_stack.stack[--fail_stack.avail].pointer
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1366 #define POP_FAILURE_INT() fail_stack.stack[--fail_stack.avail].integer
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1367 #define POP_FAILURE_ELT() fail_stack.stack[--fail_stack.avail]
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1368
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1369 /* Individual items aside from the registers. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1370 #define NUM_NONREG_ITEMS 3
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1371
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1372 /* Used to examine the stack (to detect infinite loops). */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1373 #define FAILURE_PAT(h) fail_stack.stack[(h) - 1].pointer
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1374 #define FAILURE_STR(h) (fail_stack.stack[(h) - 2].pointer)
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1375 #define NEXT_FAILURE_HANDLE(h) fail_stack.stack[(h) - 3].integer
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1376 #define TOP_FAILURE_HANDLE() fail_stack.frame
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1377
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1378
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1379 #define ENSURE_FAIL_STACK(space) \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1380 while (REMAINING_AVAIL_SLOTS <= space) { \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1381 if (!GROW_FAIL_STACK (fail_stack)) \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1382 return -2; \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1383 DEBUG_PRINT2 ("\n Doubled stack; size now: %d\n", (fail_stack).size);\
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1384 DEBUG_PRINT2 (" slots available: %d\n", REMAINING_AVAIL_SLOTS);\
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1385 }
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1386
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1387 /* Push register NUM onto the stack. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1388 #define PUSH_FAILURE_REG(num) \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1389 do { \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1390 char *destination; \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1391 ENSURE_FAIL_STACK(3); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1392 DEBUG_PRINT4 (" Push reg %d (spanning %p -> %p)\n", \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1393 num, regstart[num], regend[num]); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1394 PUSH_FAILURE_POINTER (regstart[num]); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1395 PUSH_FAILURE_POINTER (regend[num]); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1396 PUSH_FAILURE_INT (num); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1397 } while (0)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1398
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1399 /* Pop a saved register off the stack. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1400 #define POP_FAILURE_REG() \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1401 do { \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1402 int reg = POP_FAILURE_INT (); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1403 regend[reg] = POP_FAILURE_POINTER (); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1404 regstart[reg] = POP_FAILURE_POINTER (); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1405 DEBUG_PRINT4 (" Pop reg %d (spanning %p -> %p)\n", \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1406 reg, regstart[reg], regend[reg]); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1407 } while (0)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1408
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1409 /* Check that we are not stuck in an infinite loop. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1410 #define CHECK_INFINITE_LOOP(pat_cur, string_place) \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1411 do { \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1412 int failure = TOP_FAILURE_HANDLE(); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1413 /* Check for infinite matching loops */ \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1414 while (failure > 0 && \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1415 (FAILURE_STR (failure) == string_place \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1416 || FAILURE_STR (failure) == NULL)) \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1417 { \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1418 assert (FAILURE_PAT (failure) >= bufp->buffer \
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1419 && FAILURE_PAT (failure) <= bufp->buffer + bufp->used); \
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1420 if (FAILURE_PAT (failure) == pat_cur) \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1421 goto fail; \
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1422 DEBUG_PRINT2 (" Other pattern: %p\n", FAILURE_PAT (failure)); \
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1423 failure = NEXT_FAILURE_HANDLE(failure); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1424 } \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1425 DEBUG_PRINT2 (" Other string: %p\n", FAILURE_STR (failure)); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1426 } while (0)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1427
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1428 /* Push the information about the state we will need
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1429 if we ever fail back to it.
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1430
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1431 Requires variables fail_stack, regstart, regend and
1156
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1432 num_regs be declared. GROW_FAIL_STACK requires `destination' be
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1433 declared.
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1434
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1435 Does `return FAILURE_CODE' if runs out of memory. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1436
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1437 #define PUSH_FAILURE_POINT(pattern, string_place) \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1438 do { \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1439 char *destination; \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1440 /* Must be int, so when we don't save any registers, the arithmetic \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1441 of 0 + -1 isn't done as unsigned. */ \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1442 \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1443 DEBUG_STATEMENT (failure_id++); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1444 DEBUG_STATEMENT (nfailure_points_pushed++); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1445 DEBUG_PRINT2 ("\nPUSH_FAILURE_POINT #%u:\n", failure_id); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1446 DEBUG_PRINT2 (" Before push, next avail: %d\n", (fail_stack).avail); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1447 DEBUG_PRINT2 (" size: %d\n", (fail_stack).size);\
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1448 \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1449 ENSURE_FAIL_STACK (NUM_NONREG_ITEMS); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1450 \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1451 DEBUG_PRINT1 ("\n"); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1452 \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1453 DEBUG_PRINT2 (" Push frame index: %d\n", fail_stack.frame); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1454 PUSH_FAILURE_INT (fail_stack.frame); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1455 \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1456 DEBUG_PRINT2 (" Push string %p: `", string_place); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1457 DEBUG_PRINT_DOUBLE_STRING (string_place, string1, size1, string2, size2);\
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1458 DEBUG_PRINT1 ("'\n"); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1459 PUSH_FAILURE_POINTER (string_place); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1460 \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1461 DEBUG_PRINT2 (" Push pattern %p: ", pattern); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1462 DEBUG_PRINT_COMPILED_PATTERN (bufp, pattern, pend); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1463 PUSH_FAILURE_POINTER (pattern); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1464 \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1465 /* Close the frame by moving the frame pointer past it. */ \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1466 fail_stack.frame = fail_stack.avail; \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1467 } while (0)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1468
1156
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1469 /* Estimate the size of data pushed by a typical failure stack entry.
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1470 An estimate is all we need, because all we use this for
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1471 is to choose a limit for how big to make the failure stack. */
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1472
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1473 #define TYPICAL_FAILURE_SIZE 20
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
1474
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1475 /* How many items can still be added to the stack without overflowing it. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1476 #define REMAINING_AVAIL_SLOTS ((fail_stack).size - (fail_stack).avail)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1477
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1478
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1479 /* Pops what PUSH_FAIL_STACK pushes.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1480
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1481 We restore into the parameters, all of which should be lvalues:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1482 STR -- the saved data position.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1483 PAT -- the saved pattern position.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1484 REGSTART, REGEND -- arrays of string positions.
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1485
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1486 Also assumes the variables `fail_stack' and (if debugging), `bufp',
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1487 `pend', `string1', `size1', `string2', and `size2'. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1488
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1489 #define POP_FAILURE_POINT(str, pat) \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1490 do { \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1491 assert (!FAIL_STACK_EMPTY ()); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1492 \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1493 /* Remove failure points and point to how many regs pushed. */ \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1494 DEBUG_PRINT1 ("POP_FAILURE_POINT:\n"); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1495 DEBUG_PRINT2 (" Before pop, next avail: %d\n", fail_stack.avail); \
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1496 DEBUG_PRINT2 (" size: %d\n", fail_stack.size); \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1497 \
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1498 /* Pop the saved registers. */ \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1499 while (fail_stack.frame < fail_stack.avail) \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1500 POP_FAILURE_REG (); \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1501 \
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1502 pat = (unsigned char *) POP_FAILURE_POINTER (); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1503 DEBUG_PRINT2 (" Popping pattern %p: ", pat); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1504 DEBUG_PRINT_COMPILED_PATTERN (bufp, pat, pend); \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1505 \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1506 /* If the saved string location is NULL, it came from an \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1507 on_failure_keep_string_jump opcode, and we want to throw away the \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1508 saved NULL, thus retaining our current position in the string. */ \
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1509 str = (re_char *) POP_FAILURE_POINTER (); \
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1510 DEBUG_PRINT2 (" Popping string %p: `", str); \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1511 DEBUG_PRINT_DOUBLE_STRING (str, string1, size1, string2, size2); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1512 DEBUG_PRINT1 ("'\n"); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1513 \
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1514 fail_stack.frame = POP_FAILURE_INT (); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1515 DEBUG_PRINT2 (" Popping frame index: %d\n", fail_stack.frame); \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1516 \
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1517 assert (fail_stack.avail >= 0); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1518 assert (fail_stack.frame <= fail_stack.avail); \
480
998dc67883fb (PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents: 463
diff changeset
1519 \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1520 DEBUG_STATEMENT (nfailure_points_popped++); \
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1521 } while (0) /* POP_FAILURE_POINT */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1522
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1523
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1524
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1525 /* Registers are set to a sentinel when they haven't yet matched. */
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1526 #define REG_UNSET_VALUE NULL
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1527 #define REG_UNSET(e) ((e) == REG_UNSET_VALUE)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1528
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1529 /* Subroutine declarations and macros for regex_compile. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1530
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1531 static void store_op1 _RE_ARGS((re_opcode_t op, unsigned char *loc, int arg));
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1532 static void store_op2 _RE_ARGS((re_opcode_t op, unsigned char *loc,
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1533 int arg1, int arg2));
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1534 static void insert_op1 _RE_ARGS((re_opcode_t op, unsigned char *loc,
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1535 int arg, unsigned char *end));
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1536 static void insert_op2 _RE_ARGS((re_opcode_t op, unsigned char *loc,
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1537 int arg1, int arg2, unsigned char *end));
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1538 static boolean at_begline_loc_p _RE_ARGS((const unsigned char *pattern,
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1539 const unsigned char *p,
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1540 reg_syntax_t syntax));
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1541 static boolean at_endline_loc_p _RE_ARGS((const unsigned char *p,
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1542 const unsigned char *pend,
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1543 reg_syntax_t syntax));
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
1544 static unsigned char *skip_one_char _RE_ARGS((unsigned char *p));
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1545
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1546 /* Fetch the next character in the uncompiled pattern---translating it
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1547 if necessary. Also cast from a signed character in the constant
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1548 string passed to us by the user to an unsigned char that we can use
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1549 as an array index (in, e.g., `translate'). */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1550 #define PATFETCH(c) \
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1551 do { \
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1552 PATFETCH_RAW (c); \
1328
0aa10b723959 Use RE_TRANSLATE_P to check whether translation is
Andreas Schwab <schwab@suse.de>
parents: 1326
diff changeset
1553 if (RE_TRANSLATE_P (translate)) c = RE_TRANSLATE (translate, c); \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1554 } while (0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1555
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1556 /* Fetch the next character in the uncompiled pattern, with no
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1557 translation. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1558 #define PATFETCH_RAW(c) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1559 do {if (p == pend) return REG_EEND; \
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1560 c = *p++; \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1561 } while (0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1562
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1563 /* Go backwards one character in the pattern. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1564 #define PATUNFETCH p--
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1565
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1566
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1567 /* If `translate' is non-null, return translate[D], else just D. We
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1568 cast the subscript to translate because some data is declared as
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1569 `char *', to avoid warnings when a string constant is passed. But
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1570 when we use a character as a subscript we must make it unsigned. */
501
f29b13c2cefd (TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents: 490
diff changeset
1571 #ifndef TRANSLATE
f29b13c2cefd (TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents: 490
diff changeset
1572 #define TRANSLATE(d) \
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1573 (RE_TRANSLATE_P (translate) ? RE_TRANSLATE (translate, (d)) : (d))
501
f29b13c2cefd (TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents: 490
diff changeset
1574 #endif
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1575
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1576
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1577 /* Macros for outputting the compiled pattern into `buffer'. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1578
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1579 /* If the buffer isn't allocated when it comes in, use this. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1580 #define INIT_BUF_SIZE 32
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1581
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1582 /* Make sure we have at least N more bytes of space in buffer. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1583 #define GET_BUFFER_SPACE(n) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1584 while (b - bufp->buffer + (n) > bufp->allocated) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1585 EXTEND_BUFFER ()
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1586
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1587 /* Make sure we have one more byte of buffer space and then add C to it. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1588 #define BUF_PUSH(c) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1589 do { \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1590 GET_BUFFER_SPACE (1); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1591 *b++ = (unsigned char) (c); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1592 } while (0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1593
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1594
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1595 /* Ensure we have two more bytes of buffer space and then append C1 and C2. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1596 #define BUF_PUSH_2(c1, c2) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1597 do { \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1598 GET_BUFFER_SPACE (2); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1599 *b++ = (unsigned char) (c1); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1600 *b++ = (unsigned char) (c2); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1601 } while (0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1602
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1603
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1604 /* As with BUF_PUSH_2, except for three bytes. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1605 #define BUF_PUSH_3(c1, c2, c3) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1606 do { \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1607 GET_BUFFER_SPACE (3); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1608 *b++ = (unsigned char) (c1); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1609 *b++ = (unsigned char) (c2); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1610 *b++ = (unsigned char) (c3); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1611 } while (0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1612
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1613
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1614 /* Store a jump with opcode OP at LOC to location TO. We store a
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1615 relative address offset by the three bytes the jump itself occupies. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1616 #define STORE_JUMP(op, loc, to) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1617 store_op1 (op, loc, (to) - (loc) - 3)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1618
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1619 /* Likewise, for a two-argument jump. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1620 #define STORE_JUMP2(op, loc, to, arg) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1621 store_op2 (op, loc, (to) - (loc) - 3, arg)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1622
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1623 /* Like `STORE_JUMP', but for inserting. Assume `b' is the buffer end. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1624 #define INSERT_JUMP(op, loc, to) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1625 insert_op1 (op, loc, (to) - (loc) - 3, b)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1626
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1627 /* Like `STORE_JUMP2', but for inserting. Assume `b' is the buffer end. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1628 #define INSERT_JUMP2(op, loc, to, arg) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1629 insert_op2 (op, loc, (to) - (loc) - 3, arg, b)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1630
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1631
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1632 /* This is not an arbitrary limit: the arguments which represent offsets
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1633 into the pattern are two bytes long. So if 2^16 bytes turns out to
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1634 be too small, many things would have to change. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1635 #define MAX_BUF_SIZE (1L << 16)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1636
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1637
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1638 /* Extend the buffer by twice its current size via realloc and
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1639 reset the pointers that pointed into the old block to point to the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1640 correct places in the new one. If extending the buffer results in it
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1641 being larger than MAX_BUF_SIZE, then flag memory exhausted. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1642 #define EXTEND_BUFFER() \
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1643 do { \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1644 unsigned char *old_buffer = bufp->buffer; \
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1645 if (bufp->allocated == MAX_BUF_SIZE) \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1646 return REG_ESIZE; \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1647 bufp->allocated <<= 1; \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1648 if (bufp->allocated > MAX_BUF_SIZE) \
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1649 bufp->allocated = MAX_BUF_SIZE; \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1650 bufp->buffer = (unsigned char *) realloc (bufp->buffer, bufp->allocated);\
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1651 if (bufp->buffer == NULL) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1652 return REG_ESPACE; \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1653 /* If the buffer moved, move all the pointers into it. */ \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1654 if (old_buffer != bufp->buffer) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1655 { \
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1656 b = (b - old_buffer) + bufp->buffer; \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1657 begalt = (begalt - old_buffer) + bufp->buffer; \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1658 if (fixup_alt_jump) \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1659 fixup_alt_jump = (fixup_alt_jump - old_buffer) + bufp->buffer;\
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1660 if (laststart) \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1661 laststart = (laststart - old_buffer) + bufp->buffer; \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1662 if (pending_exact) \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1663 pending_exact = (pending_exact - old_buffer) + bufp->buffer; \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1664 } \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1665 } while (0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1666
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1667
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1668 /* Since we have one byte reserved for the register number argument to
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1669 {start,stop}_memory, the maximum number of groups we can report
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1670 things about is what fits in that byte. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1671 #define MAX_REGNUM 255
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1672
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1673 /* But patterns can have more than `MAX_REGNUM' registers. We just
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1674 ignore the excess. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1675 typedef unsigned regnum_t;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1676
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1677
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1678 /* Macros for the compile stack. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1679
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1680 /* Since offsets can go either forwards or backwards, this type needs to
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1681 be able to hold values from -(MAX_BUF_SIZE - 1) to MAX_BUF_SIZE - 1. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1682 typedef int pattern_offset_t;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1683
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1684 typedef struct
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1685 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1686 pattern_offset_t begalt_offset;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1687 pattern_offset_t fixup_alt_jump;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1688 pattern_offset_t laststart_offset;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1689 regnum_t regnum;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1690 } compile_stack_elt_t;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1691
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1692
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1693 typedef struct
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1694 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1695 compile_stack_elt_t *stack;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1696 unsigned size;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1697 unsigned avail; /* Offset of next open position. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1698 } compile_stack_type;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1699
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1700
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1701 #define INIT_COMPILE_STACK_SIZE 32
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1702
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1703 #define COMPILE_STACK_EMPTY (compile_stack.avail == 0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1704 #define COMPILE_STACK_FULL (compile_stack.avail == compile_stack.size)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1705
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1706 /* The next available element. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1707 #define COMPILE_STACK_TOP (compile_stack.stack[compile_stack.avail])
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1708
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1709
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1710 /* Structure to manage work area for range table. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1711 struct range_table_work_area
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1712 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1713 int *table; /* actual work area. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1714 int allocated; /* allocated size for work area in bytes. */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1715 int used; /* actually used size in words. */
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1716 int bits; /* flag to record character classes */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1717 };
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1718
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1719 /* Make sure that WORK_AREA can hold more N multibyte characters. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1720 #define EXTEND_RANGE_TABLE_WORK_AREA(work_area, n) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1721 do { \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1722 if (((work_area).used + (n)) * sizeof (int) > (work_area).allocated) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1723 { \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1724 (work_area).allocated += 16 * sizeof (int); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1725 if ((work_area).table) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1726 (work_area).table \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1727 = (int *) realloc ((work_area).table, (work_area).allocated); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1728 else \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1729 (work_area).table \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1730 = (int *) malloc ((work_area).allocated); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1731 if ((work_area).table == 0) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1732 FREE_STACK_RETURN (REG_ESPACE); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1733 } \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1734 } while (0)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1735
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1736 #define SET_RANGE_TABLE_WORK_AREA_BIT(work_area, bit) \
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1737 (work_area).bits |= (bit)
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1738
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1739 /* These bits represent the various character classes such as [:alnum:]
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1740 in a charset's range table. */
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1741 #define BIT_ALNUM 0x1
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1742 #define BIT_ALPHA 0x2
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1743 #define BIT_WORD 0x4
1965
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
1744 #define BIT_ASCII 0x8
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
1745 #define BIT_NONASCII 0x10
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1746 #define BIT_GRAPH 0x20
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1747 #define BIT_LOWER 0x40
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1748 #define BIT_PRINT 0x80
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1749 #define BIT_PUNCT 0x100
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1750 #define BIT_SPACE 0x200
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1751 #define BIT_UPPER 0x400
1965
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
1752 #define BIT_UNIBYTE 0x800
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
1753 #define BIT_MULTIBYTE 0x1000
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1754
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1755 /* Set a range (RANGE_START, RANGE_END) to WORK_AREA. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1756 #define SET_RANGE_TABLE_WORK_AREA(work_area, range_start, range_end) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1757 do { \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1758 EXTEND_RANGE_TABLE_WORK_AREA ((work_area), 2); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1759 (work_area).table[(work_area).used++] = (range_start); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1760 (work_area).table[(work_area).used++] = (range_end); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1761 } while (0)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1762
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1763 /* Free allocated memory for WORK_AREA. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1764 #define FREE_RANGE_TABLE_WORK_AREA(work_area) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1765 do { \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1766 if ((work_area).table) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1767 free ((work_area).table); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1768 } while (0)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1769
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1770 #define CLEAR_RANGE_TABLE_WORK_USED(work_area) ((work_area).used = 0, (work_area).bits = 0)
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1771 #define RANGE_TABLE_WORK_USED(work_area) ((work_area).used)
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1772 #define RANGE_TABLE_WORK_BITS(work_area) ((work_area).bits)
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1773 #define RANGE_TABLE_WORK_ELT(work_area, i) ((work_area).table[i])
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1774
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1775
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1776 /* Set the bit for character C in a list. */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1777 #define SET_LIST_BIT(c) \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1778 (b[((unsigned char) (c)) / BYTEWIDTH] \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1779 |= 1 << (((unsigned char) c) % BYTEWIDTH))
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1780
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1781
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1782 /* Get the next unsigned number in the uncompiled pattern. */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1783 #define GET_UNSIGNED_NUMBER(num) \
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1784 do { if (p != pend) \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1785 { \
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1786 PATFETCH (c); \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1787 while (ISDIGIT (c)) \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1788 { \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1789 if (num < 0) \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1790 num = 0; \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1791 num = num * 10 + c - '0'; \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1792 if (p == pend) \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1793 break; \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1794 PATFETCH (c); \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1795 } \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1796 } \
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1797 } while (0)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1798
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1799 #define CHAR_CLASS_MAX_LENGTH 6 /* Namely, `xdigit'. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1800
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1801 #define IS_CHAR_CLASS(string) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1802 (STREQ (string, "alpha") || STREQ (string, "upper") \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1803 || STREQ (string, "lower") || STREQ (string, "digit") \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1804 || STREQ (string, "alnum") || STREQ (string, "xdigit") \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1805 || STREQ (string, "space") || STREQ (string, "print") \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1806 || STREQ (string, "punct") || STREQ (string, "graph") \
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
1807 || STREQ (string, "cntrl") || STREQ (string, "blank") \
1965
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
1808 || STREQ (string, "word") \
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
1809 || STREQ (string, "ascii") || STREQ (string, "nonascii") \
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
1810 || STREQ (string, "unibyte") || STREQ (string, "multibyte"))
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1811
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1812 /* QUIT is only used on NTemacs. */
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1813 #if !defined (WINDOWSNT) || !defined (emacs)
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1814 #undef QUIT
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1815 #define QUIT
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1816 #endif
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1817
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1818 #ifndef MATCH_MAY_ALLOCATE
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1819
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1820 /* If we cannot allocate large objects within re_match_2_internal,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1821 we make the fail stack and register vectors global.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1822 The fail stack, we grow to the maximum size when a regexp
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1823 is compiled.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1824 The register vectors, we adjust in size each time we
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1825 compile a regexp, according to the number of registers it needs. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1826
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1827 static fail_stack_type fail_stack;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1828
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1829 /* Size with which the following vectors are currently allocated.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1830 That is so we can make them bigger as needed,
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1831 but never make them smaller. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1832 static int regs_allocated_size;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1833
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1834 static re_char ** regstart, ** regend;
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1835 static re_char **best_regstart, **best_regend;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1836
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1837 /* Make the register vectors big enough for NUM_REGS registers,
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1838 but don't make them smaller. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1839
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1840 static
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1841 regex_grow_registers (num_regs)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1842 int num_regs;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1843 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1844 if (num_regs > regs_allocated_size)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1845 {
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1846 RETALLOC_IF (regstart, num_regs, re_char *);
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1847 RETALLOC_IF (regend, num_regs, re_char *);
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1848 RETALLOC_IF (best_regstart, num_regs, re_char *);
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1849 RETALLOC_IF (best_regend, num_regs, re_char *);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1850
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1851 regs_allocated_size = num_regs;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1852 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1853 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1854
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1855 #endif /* not MATCH_MAY_ALLOCATE */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1856
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1857 static boolean group_in_compile_stack _RE_ARGS ((compile_stack_type
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1858 compile_stack,
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1859 regnum_t regnum));
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1860
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1861 /* `regex_compile' compiles PATTERN (of length SIZE) according to SYNTAX.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1862 Returns one of error codes defined in `regex.h', or zero for success.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1863
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1864 Assumes the `allocated' (and perhaps `buffer') and `translate'
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1865 fields are set in BUFP on entry.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1866
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1867 If it succeeds, results are put in BUFP (if it returns an error, the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1868 contents of BUFP are undefined):
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1869 `buffer' is the compiled pattern;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1870 `syntax' is set to SYNTAX;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1871 `used' is set to the length of the compiled pattern;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1872 `fastmap_accurate' is zero;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1873 `re_nsub' is the number of subexpressions in PATTERN;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1874 `not_bol' and `not_eol' are zero;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1875
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1876 The `fastmap' and `newline_anchor' fields are neither
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1877 examined nor set. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1878
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1879 /* Insert the `jump' from the end of last alternative to "here".
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1880 The space for the jump has already been allocated. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1881 #define FIXUP_ALT_JUMP() \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1882 do { \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1883 if (fixup_alt_jump) \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1884 STORE_JUMP (jump, fixup_alt_jump, b); \
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1885 } while (0)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1886
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
1887
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1888 /* Return, freeing storage we allocated. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1889 #define FREE_STACK_RETURN(value) \
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1890 do { \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1891 FREE_RANGE_TABLE_WORK_AREA (range_table_work); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1892 free (compile_stack.stack); \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1893 return value; \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1894 } while (0)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1895
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1896 static reg_errcode_t
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1897 regex_compile (pattern, size, syntax, bufp)
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1898 re_char *pattern;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1899 int size;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1900 reg_syntax_t syntax;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1901 struct re_pattern_buffer *bufp;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1902 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1903 /* We fetch characters from PATTERN here. Even though PATTERN is
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1904 `char *' (i.e., signed), we declare these variables as unsigned, so
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1905 they can be reliably used as array indices. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1906 register unsigned int c, c1;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1907
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1908 /* A random temporary spot in PATTERN. */
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1909 re_char *p1;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1910
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1911 /* Points to the end of the buffer, where we should append. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1912 register unsigned char *b;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1913
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1914 /* Keeps track of unclosed groups. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1915 compile_stack_type compile_stack;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1916
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1917 /* Points to the current (ending) position in the pattern. */
1440
ba6fdbf593bb (regex_compile): Declare p with non-const type on AIX.
Richard Stallman <rms@gnu.org>
parents: 1383
diff changeset
1918 #ifdef AIX
ba6fdbf593bb (regex_compile): Declare p with non-const type on AIX.
Richard Stallman <rms@gnu.org>
parents: 1383
diff changeset
1919 /* `const' makes AIX compiler fail. */
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1920 unsigned char *p = pattern;
1440
ba6fdbf593bb (regex_compile): Declare p with non-const type on AIX.
Richard Stallman <rms@gnu.org>
parents: 1383
diff changeset
1921 #else
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1922 re_char *p = pattern;
1440
ba6fdbf593bb (regex_compile): Declare p with non-const type on AIX.
Richard Stallman <rms@gnu.org>
parents: 1383
diff changeset
1923 #endif
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1924 re_char *pend = pattern + size;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1925
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1926 /* How to translate the characters in the pattern. */
501
f29b13c2cefd (TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents: 490
diff changeset
1927 RE_TRANSLATE_TYPE translate = bufp->translate;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1928
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1929 /* Address of the count-byte of the most recently inserted `exactn'
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1930 command. This makes it possible to tell if a new exact-match
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1931 character can be added to that command or if the character requires
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1932 a new `exactn' command. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1933 unsigned char *pending_exact = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1934
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1935 /* Address of start of the most recently finished expression.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1936 This tells, e.g., postfix * where to find the start of its
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1937 operand. Reset at the beginning of groups and alternatives. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1938 unsigned char *laststart = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1939
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1940 /* Address of beginning of regexp, or inside of last group. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1941 unsigned char *begalt;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1942
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1943 /* Place in the uncompiled pattern (i.e., the {) to
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1944 which to go back if the interval is invalid. */
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
1945 re_char *beg_interval;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1946
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1947 /* Address of the place where a forward jump should go to the end of
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1948 the containing expression. Each alternative of an `or' -- except the
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1949 last -- ends with a forward jump of this sort. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1950 unsigned char *fixup_alt_jump = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1951
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1952 /* Counts open-groups as they are encountered. Remembered for the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1953 matching close-group on the compile stack, so the same register
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1954 number is put in the stop_memory as the start_memory. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1955 regnum_t regnum = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1956
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1957 /* Work area for range table of charset. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1958 struct range_table_work_area range_table_work;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1959
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1960 #ifdef DEBUG
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1961 debug++;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1962 DEBUG_PRINT1 ("\nCompiling pattern: ");
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
1963 if (debug > 0)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1964 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1965 unsigned debug_count;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1966
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1967 for (debug_count = 0; debug_count < size; debug_count++)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
1968 putchar (pattern[debug_count]);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1969 putchar ('\n');
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1970 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1971 #endif /* DEBUG */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1972
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1973 /* Initialize the compile stack. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1974 compile_stack.stack = TALLOC (INIT_COMPILE_STACK_SIZE, compile_stack_elt_t);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1975 if (compile_stack.stack == NULL)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1976 return REG_ESPACE;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1977
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1978 compile_stack.size = INIT_COMPILE_STACK_SIZE;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1979 compile_stack.avail = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1980
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1981 range_table_work.table = 0;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1982 range_table_work.allocated = 0;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1983
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1984 /* Initialize the pattern buffer. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1985 bufp->syntax = syntax;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1986 bufp->fastmap_accurate = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1987 bufp->not_bol = bufp->not_eol = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1988
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1989 /* Set `used' to zero, so that if we return an error, the pattern
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1990 printer (for debugging) will think there's no pattern. We reset it
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1991 at the end. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1992 bufp->used = 0;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1993
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1994 /* Always count groups, whether or not bufp->no_sub is set. */
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
1995 bufp->re_nsub = 0;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
1996
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1997 #ifdef emacs
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1998 /* bufp->multibyte is set before regex_compile is called, so don't alter
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
1999 it. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2000 #else /* not emacs */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2001 /* Nothing is recognized as a multibyte character. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2002 bufp->multibyte = 0;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2003 #endif
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2004
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2005 #if !defined (emacs) && !defined (SYNTAX_TABLE)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2006 /* Initialize the syntax table. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2007 init_syntax_once ();
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2008 #endif
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2009
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2010 if (bufp->allocated == 0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2011 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2012 if (bufp->buffer)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2013 { /* If zero allocated, but buffer is non-null, try to realloc
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2014 enough space. This loses if buffer's address is bogus, but
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2015 that is the user's responsibility. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2016 RETALLOC (bufp->buffer, INIT_BUF_SIZE, unsigned char);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2017 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2018 else
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2019 { /* Caller did not allocate a buffer. Do it for them. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2020 bufp->buffer = TALLOC (INIT_BUF_SIZE, unsigned char);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2021 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2022 if (!bufp->buffer) FREE_STACK_RETURN (REG_ESPACE);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2023
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2024 bufp->allocated = INIT_BUF_SIZE;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2025 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2026
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2027 begalt = b = bufp->buffer;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2028
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2029 /* Loop through the uncompiled pattern until we're at the end. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2030 while (p != pend)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2031 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2032 PATFETCH (c);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2033
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2034 switch (c)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2035 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2036 case '^':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2037 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2038 if ( /* If at start of pattern, it's an operator. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2039 p == pattern + 1
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2040 /* If context independent, it's an operator. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2041 || syntax & RE_CONTEXT_INDEP_ANCHORS
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2042 /* Otherwise, depends on what's come before. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2043 || at_begline_loc_p (pattern, p, syntax))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2044 BUF_PUSH (begline);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2045 else
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2046 goto normal_char;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2047 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2048 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2049
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2050
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2051 case '$':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2052 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2053 if ( /* If at end of pattern, it's an operator. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2054 p == pend
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2055 /* If context independent, it's an operator. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2056 || syntax & RE_CONTEXT_INDEP_ANCHORS
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2057 /* Otherwise, depends on what's next. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2058 || at_endline_loc_p (p, pend, syntax))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2059 BUF_PUSH (endline);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2060 else
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2061 goto normal_char;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2062 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2063 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2064
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2065
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2066 case '+':
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2067 case '?':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2068 if ((syntax & RE_BK_PLUS_QM)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2069 || (syntax & RE_LIMITED_OPS))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2070 goto normal_char;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2071 handle_plus:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2072 case '*':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2073 /* If there is no previous pattern... */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2074 if (!laststart)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2075 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2076 if (syntax & RE_CONTEXT_INVALID_OPS)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2077 FREE_STACK_RETURN (REG_BADRPT);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2078 else if (!(syntax & RE_CONTEXT_INDEP_OPS))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2079 goto normal_char;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2080 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2081
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2082 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2083 /* 1 means zero (many) matches is allowed. */
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
2084 boolean zero_times_ok = 0, many_times_ok = 0;
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
2085 boolean greedy = 1;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2086
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2087 /* If there is a sequence of repetition chars, collapse it
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2088 down to just one (the right one). We can't combine
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2089 interval operators with these because of, e.g., `a{2}*',
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2090 which should only match an even number of `a's. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2091
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2092 for (;;)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2093 {
2034
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2094 if (!(syntax & RE_ALL_GREEDY)
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2095 && c == '?' && (zero_times_ok || many_times_ok))
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2096 greedy = 0;
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2097 else
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2098 {
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2099 zero_times_ok |= c != '+';
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2100 many_times_ok |= c != '?';
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2101 }
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2102
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2103 if (p == pend)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2104 break;
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2105 else if (*p == '*'
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2106 || (!(syntax & RE_BK_PLUS_QM)
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2107 && (*p == '+' || *p == '?')))
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2108 ;
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2109 else if (syntax & RE_BK_PLUS_QM && *p == '\\')
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2110 {
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2111 if (p+1 == pend)
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2112 FREE_STACK_RETURN (REG_EESCAPE);
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2113 if (p[1] == '+' || p[1] == '?')
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2114 PATFETCH (c); /* Gobble up the backslash. */
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2115 else
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2116 break;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2117 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2118 else
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2119 break;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2120 /* If we get here, we found another repeat character. */
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2121 PATFETCH (c);
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2122 }
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2123
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2124 /* Star, etc. applied to an empty pattern is equivalent
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2125 to an empty pattern. */
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2126 if (!laststart || laststart == b)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2127 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2128
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2129 /* Now we know whether or not zero matches is allowed
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2130 and also whether or not two or more matches is allowed. */
2034
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2131 if (greedy)
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2132 {
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2133 if (many_times_ok)
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2134 {
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2135 boolean simple = skip_one_char (laststart) == b;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2136 unsigned int startoffset = 0;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2137 assert (skip_one_char (laststart) <= b);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2138
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2139 if (!zero_times_ok && simple)
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2140 { /* Since simple * loops can be made faster by using
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2141 on_failure_keep_string_jump, we turn simple P+
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2142 into PP* if P is simple. */
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2143 unsigned char *p1, *p2;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2144 startoffset = b - laststart;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2145 GET_BUFFER_SPACE (startoffset);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2146 p1 = b; p2 = laststart;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2147 while (p2 < p1)
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2148 *b++ = *p2++;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2149 zero_times_ok = 1;
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2150 }
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2151
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2152 GET_BUFFER_SPACE (6);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2153 if (!zero_times_ok)
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2154 /* A + loop. */
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2155 STORE_JUMP (on_failure_jump_loop, b, b + 6);
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2156 else
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2157 /* Simple * loops can use on_failure_keep_string_jump
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2158 depending on what follows. But since we don't know
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2159 that yet, we leave the decision up to
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2160 on_failure_jump_smart. */
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2161 INSERT_JUMP (simple ? on_failure_jump_smart
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2162 : on_failure_jump_loop,
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2163 laststart + startoffset, b + 6);
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2164 b += 3;
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2165 STORE_JUMP (jump, b, laststart + startoffset);
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2166 b += 3;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2167 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2168 else
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2169 {
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2170 /* A simple ? pattern. */
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2171 assert (zero_times_ok);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2172 GET_BUFFER_SPACE (3);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2173 INSERT_JUMP (on_failure_jump, laststart, b + 3);
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2174 b += 3;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2175 }
2034
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2176 }
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2177 else /* not greedy */
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2178 { /* I wish the greedy and non-greedy cases could be merged. */
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2179
2370
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
2180 GET_BUFFER_SPACE (7); /* We might use less. */
2034
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2181 if (many_times_ok)
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2182 {
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2183 /* The non-greedy multiple match looks like a repeat..until:
2034
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2184 we only need a conditional jump at the end of the loop */
2370
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
2185 BUF_PUSH (no_op);
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
2186 STORE_JUMP (on_failure_jump_nastyloop, b, laststart);
2034
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2187 b += 3;
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2188 if (zero_times_ok)
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2189 {
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2190 /* The repeat...until naturally matches one or more.
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2191 To also match zero times, we need to first jump to
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2192 the end of the loop (its conditional jump). */
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2193 INSERT_JUMP (jump, laststart, b);
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2194 b += 3;
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2195 }
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2196 }
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2197 else
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2198 {
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2199 /* non-greedy a?? */
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2200 INSERT_JUMP (jump, laststart, b + 3);
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2201 b += 3;
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2202 INSERT_JUMP (on_failure_jump, laststart, laststart + 6);
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2203 b += 3;
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2204 }
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2205 }
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
2206 }
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
2207 pending_exact = 0;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2208 break;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2209
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2210
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2211 case '.':
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2212 laststart = b;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2213 BUF_PUSH (anychar);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2214 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2215
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2216
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2217 case '[':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2218 {
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2219 CLEAR_RANGE_TABLE_WORK_USED (range_table_work);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2220
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2221 if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2222
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2223 /* Ensure that we have enough space to push a charset: the
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2224 opcode, the length count, and the bitset; 34 bytes in all. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2225 GET_BUFFER_SPACE (34);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2226
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2227 laststart = b;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2228
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2229 /* We test `*p == '^' twice, instead of using an if
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2230 statement, so we only need one BUF_PUSH. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2231 BUF_PUSH (*p == '^' ? charset_not : charset);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2232 if (*p == '^')
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2233 p++;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2234
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2235 /* Remember the first position in the bracket expression. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2236 p1 = p;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2237
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2238 /* Push the number of bytes in the bitmap. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2239 BUF_PUSH ((1 << BYTEWIDTH) / BYTEWIDTH);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2240
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2241 /* Clear the whole map. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2242 bzero (b, (1 << BYTEWIDTH) / BYTEWIDTH);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2243
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2244 /* charset_not matches newline according to a syntax bit. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2245 if ((re_opcode_t) b[-2] == charset_not
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2246 && (syntax & RE_HAT_LISTS_NOT_NEWLINE))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2247 SET_LIST_BIT ('\n');
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2248
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2249 /* Read in characters and ranges, setting map bits. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2250 for (;;)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2251 {
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2252 int len;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2253 boolean escaped_char = false;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2254
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2255 if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2256
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2257 PATFETCH (c);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2258
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2259 /* \ might escape characters inside [...] and [^...]. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2260 if ((syntax & RE_BACKSLASH_ESCAPE_IN_LISTS) && c == '\\')
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2261 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2262 if (p == pend) FREE_STACK_RETURN (REG_EESCAPE);
679
b088267ea1c8 Clean up whitespace.
Richard Stallman <rms@gnu.org>
parents: 678
diff changeset
2263
b088267ea1c8 Clean up whitespace.
Richard Stallman <rms@gnu.org>
parents: 678
diff changeset
2264 PATFETCH (c);
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2265 escaped_char = true;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2266 }
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2267 else
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2268 {
992
03e78eed4997 Whitespace change.
Richard Stallman <rms@gnu.org>
parents: 963
diff changeset
2269 /* Could be the end of the bracket expression. If it's
03e78eed4997 Whitespace change.
Richard Stallman <rms@gnu.org>
parents: 963
diff changeset
2270 not (i.e., when the bracket expression is `[]' so
03e78eed4997 Whitespace change.
Richard Stallman <rms@gnu.org>
parents: 963
diff changeset
2271 far), the ']' character bit gets set way below. */
03e78eed4997 Whitespace change.
Richard Stallman <rms@gnu.org>
parents: 963
diff changeset
2272 if (c == ']' && p != p1 + 1)
03e78eed4997 Whitespace change.
Richard Stallman <rms@gnu.org>
parents: 963
diff changeset
2273 break;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2274 }
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2275
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2276 /* If C indicates start of multibyte char, get the
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2277 actual character code in C, and set the pattern
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2278 pointer P to the next character boundary. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2279 if (bufp->multibyte && BASE_LEADING_CODE_P (c))
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2280 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2281 PATUNFETCH;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2282 c = STRING_CHAR_AND_LENGTH (p, pend - p, len);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2283 p += len;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2284 }
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2285 /* What should we do for the character which is
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2286 greater than 0x7F, but not BASE_LEADING_CODE_P?
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2287 XXX */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2288
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2289 /* See if we're at the beginning of a possible character
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2290 class. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2291
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2292 else if (!escaped_char &&
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2293 syntax & RE_CHAR_CLASSES && c == '[' && *p == ':')
992
03e78eed4997 Whitespace change.
Richard Stallman <rms@gnu.org>
parents: 963
diff changeset
2294 {
03e78eed4997 Whitespace change.
Richard Stallman <rms@gnu.org>
parents: 963
diff changeset
2295 /* Leave room for the null. */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2296 char str[CHAR_CLASS_MAX_LENGTH + 1];
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2297 const unsigned char *class_beg;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2298
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2299 PATFETCH (c);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2300 c1 = 0;
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2301 class_beg = p;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2302
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2303 /* If pattern is `[[:'. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2304 if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2305
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2306 for (;;)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2307 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2308 PATFETCH (c);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2309 if (c == ':' || c == ']' || p == pend
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2310 || c1 == CHAR_CLASS_MAX_LENGTH)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2311 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2312 str[c1++] = c;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2313 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2314 str[c1] = '\0';
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2315
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2316 /* If isn't a word bracketed by `[:' and `:]':
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2317 undo the ending character, the letters, and
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2318 leave the leading `:' and `[' (but set bits for
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2319 them). */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2320 if (c == ':' && *p == ']')
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2321 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2322 int ch;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2323 boolean is_alnum = STREQ (str, "alnum");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2324 boolean is_alpha = STREQ (str, "alpha");
1965
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
2325 boolean is_ascii = STREQ (str, "ascii");
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2326 boolean is_blank = STREQ (str, "blank");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2327 boolean is_cntrl = STREQ (str, "cntrl");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2328 boolean is_digit = STREQ (str, "digit");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2329 boolean is_graph = STREQ (str, "graph");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2330 boolean is_lower = STREQ (str, "lower");
1965
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
2331 boolean is_multibyte = STREQ (str, "multibyte");
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
2332 boolean is_nonascii = STREQ (str, "nonascii");
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2333 boolean is_print = STREQ (str, "print");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2334 boolean is_punct = STREQ (str, "punct");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2335 boolean is_space = STREQ (str, "space");
1965
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
2336 boolean is_unibyte = STREQ (str, "unibyte");
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2337 boolean is_upper = STREQ (str, "upper");
1965
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
2338 boolean is_word = STREQ (str, "word");
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2339 boolean is_xdigit = STREQ (str, "xdigit");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2340
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2341 if (!IS_CHAR_CLASS (str))
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2342 FREE_STACK_RETURN (REG_ECTYPE);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2343
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2344 /* Throw away the ] at the end of the character
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2345 class. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2346 PATFETCH (c);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2347
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2348 if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2349
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2350 /* Most character classes in a multibyte match
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2351 just set a flag. Exceptions are is_blank,
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2352 is_digit, is_cntrl, and is_xdigit, since
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2353 they can only match ASCII characters. We
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2354 don't need to handle them for multibyte. */
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2355
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2356 if (bufp->multibyte)
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2357 {
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2358 int bit = 0;
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2359
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2360 if (is_alnum) bit = BIT_ALNUM;
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2361 if (is_alpha) bit = BIT_ALPHA;
1965
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
2362 if (is_ascii) bit = BIT_ASCII;
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2363 if (is_graph) bit = BIT_GRAPH;
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2364 if (is_lower) bit = BIT_LOWER;
1965
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
2365 if (is_multibyte) bit = BIT_MULTIBYTE;
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
2366 if (is_nonascii) bit = BIT_NONASCII;
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2367 if (is_print) bit = BIT_PRINT;
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2368 if (is_punct) bit = BIT_PUNCT;
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2369 if (is_space) bit = BIT_SPACE;
1965
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
2370 if (is_unibyte) bit = BIT_UNIBYTE;
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2371 if (is_upper) bit = BIT_UPPER;
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2372 if (is_word) bit = BIT_WORD;
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2373 if (bit)
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2374 SET_RANGE_TABLE_WORK_AREA_BIT (range_table_work,
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2375 bit);
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2376 }
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2377
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2378 /* Handle character classes for ASCII characters. */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2379 for (ch = 0; ch < 1 << BYTEWIDTH; ch++)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2380 {
692
1036844e8833 (regex_compile): Use TRANSLATE before calling SET_LIST_BIT.
Richard Stallman <rms@gnu.org>
parents: 680
diff changeset
2381 int translated = TRANSLATE (ch);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2382 /* This was split into 3 if's to
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2383 avoid an arbitrary limit in some compiler. */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2384 if ( (is_alnum && ISALNUM (ch))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2385 || (is_alpha && ISALPHA (ch))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2386 || (is_blank && ISBLANK (ch))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2387 || (is_cntrl && ISCNTRL (ch)))
692
1036844e8833 (regex_compile): Use TRANSLATE before calling SET_LIST_BIT.
Richard Stallman <rms@gnu.org>
parents: 680
diff changeset
2388 SET_LIST_BIT (translated);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2389 if ( (is_digit && ISDIGIT (ch))
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2390 || (is_graph && ISGRAPH (ch))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2391 || (is_lower && ISLOWER (ch))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2392 || (is_print && ISPRINT (ch)))
692
1036844e8833 (regex_compile): Use TRANSLATE before calling SET_LIST_BIT.
Richard Stallman <rms@gnu.org>
parents: 680
diff changeset
2393 SET_LIST_BIT (translated);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2394 if ( (is_punct && ISPUNCT (ch))
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2395 || (is_space && ISSPACE (ch))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2396 || (is_upper && ISUPPER (ch))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2397 || (is_xdigit && ISXDIGIT (ch)))
692
1036844e8833 (regex_compile): Use TRANSLATE before calling SET_LIST_BIT.
Richard Stallman <rms@gnu.org>
parents: 680
diff changeset
2398 SET_LIST_BIT (translated);
1965
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
2399 if ( (is_ascii && IS_REAL_ASCII (ch))
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
2400 || (is_nonascii && !IS_REAL_ASCII (ch))
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
2401 || (is_unibyte && ISUNIBYTE (ch))
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
2402 || (is_multibyte && !ISUNIBYTE (ch)))
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
2403 SET_LIST_BIT (translated);
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
2404
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2405 if ( (is_word && ISWORD (ch)))
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2406 SET_LIST_BIT (translated);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2407 }
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2408
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2409 /* Repeat the loop. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2410 continue;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2411 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2412 else
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2413 {
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2414 /* Go back to right after the "[:". */
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2415 p = class_beg;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2416 SET_LIST_BIT ('[');
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2417
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2418 /* Because the `:' may starts the range, we
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2419 can't simply set bit and repeat the loop.
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2420 Instead, just set it to C and handle below. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2421 c = ':';
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2422 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2423 }
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2424
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2425 if (p < pend && p[0] == '-' && p[1] != ']')
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2426 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2427
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2428 /* Discard the `-'. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2429 PATFETCH (c1);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2430
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2431 /* Fetch the character which ends the range. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2432 PATFETCH (c1);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2433 if (bufp->multibyte && BASE_LEADING_CODE_P (c1))
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2434 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2435 PATUNFETCH;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2436 c1 = STRING_CHAR_AND_LENGTH (p, pend - p, len);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2437 p += len;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2438 }
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2439
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
2440 if (SINGLE_BYTE_CHAR_P (c)
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
2441 && ! SINGLE_BYTE_CHAR_P (c1))
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
2442 {
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
2443 /* Handle a range such as \177-\377 in multibyte mode.
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
2444 Split that into two ranges,,
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
2445 the low one ending at 0237, and the high one
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
2446 starting at ...040. */
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2447 /* Unless I'm missing something,
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2448 this line is useless. -sm
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2449 int c1_base = (c1 & ~0177) | 040; */
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
2450 SET_RANGE_TABLE_WORK_AREA (range_table_work, c, c1);
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
2451 c1 = 0237;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
2452 }
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
2453 else if (!SAME_CHARSET_P (c, c1))
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2454 FREE_STACK_RETURN (REG_ERANGE);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2455 }
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2456 else
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2457 /* Range from C to C. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2458 c1 = c;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2459
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2460 /* Set the range ... */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2461 if (SINGLE_BYTE_CHAR_P (c))
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2462 /* ... into bitmap. */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2463 {
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2464 unsigned this_char;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2465 int range_start = c, range_end = c1;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2466
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2467 /* If the start is after the end, the range is empty. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2468 if (range_start > range_end)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2469 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2470 if (syntax & RE_NO_EMPTY_RANGES)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2471 FREE_STACK_RETURN (REG_ERANGE);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2472 /* Else, repeat the loop. */
679
b088267ea1c8 Clean up whitespace.
Richard Stallman <rms@gnu.org>
parents: 678
diff changeset
2473 }
b088267ea1c8 Clean up whitespace.
Richard Stallman <rms@gnu.org>
parents: 678
diff changeset
2474 else
b088267ea1c8 Clean up whitespace.
Richard Stallman <rms@gnu.org>
parents: 678
diff changeset
2475 {
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2476 for (this_char = range_start; this_char <= range_end;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2477 this_char++)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2478 SET_LIST_BIT (TRANSLATE (this_char));
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
2479 }
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2480 }
679
b088267ea1c8 Clean up whitespace.
Richard Stallman <rms@gnu.org>
parents: 678
diff changeset
2481 else
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2482 /* ... into range table. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2483 SET_RANGE_TABLE_WORK_AREA (range_table_work, c, c1);
679
b088267ea1c8 Clean up whitespace.
Richard Stallman <rms@gnu.org>
parents: 678
diff changeset
2484 }
b088267ea1c8 Clean up whitespace.
Richard Stallman <rms@gnu.org>
parents: 678
diff changeset
2485
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2486 /* Discard any (non)matching list bytes that are all 0 at the
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2487 end of the map. Decrease the map-length byte too. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2488 while ((int) b[-1] > 0 && b[b[-1] - 1] == 0)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2489 b[-1]--;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2490 b += b[-1];
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2491
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2492 /* Build real range table from work area. */
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2493 if (RANGE_TABLE_WORK_USED (range_table_work)
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2494 || RANGE_TABLE_WORK_BITS (range_table_work))
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2495 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2496 int i;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2497 int used = RANGE_TABLE_WORK_USED (range_table_work);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2498
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2499 /* Allocate space for COUNT + RANGE_TABLE. Needs two
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2500 bytes for flags, two for COUNT, and three bytes for
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2501 each character. */
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2502 GET_BUFFER_SPACE (4 + used * 3);
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2503
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2504 /* Indicate the existence of range table. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2505 laststart[1] |= 0x80;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2506
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2507 /* Store the character class flag bits into the range table.
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2508 If not in emacs, these flag bits are always 0. */
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2509 *b++ = RANGE_TABLE_WORK_BITS (range_table_work) & 0xff;
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2510 *b++ = RANGE_TABLE_WORK_BITS (range_table_work) >> 8;
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
2511
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2512 STORE_NUMBER_AND_INCR (b, used / 2);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2513 for (i = 0; i < used; i++)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2514 STORE_CHARACTER_AND_INCR
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2515 (b, RANGE_TABLE_WORK_ELT (range_table_work, i));
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2516 }
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2517 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2518 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2519
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2520
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2521 case '(':
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2522 if (syntax & RE_NO_BK_PARENS)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2523 goto handle_open;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2524 else
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2525 goto normal_char;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2526
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2527
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2528 case ')':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2529 if (syntax & RE_NO_BK_PARENS)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2530 goto handle_close;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2531 else
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2532 goto normal_char;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2533
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2534
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2535 case '\n':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2536 if (syntax & RE_NEWLINE_ALT)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2537 goto handle_alt;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2538 else
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2539 goto normal_char;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2540
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2541
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2542 case '|':
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2543 if (syntax & RE_NO_BK_VBAR)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2544 goto handle_alt;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2545 else
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2546 goto normal_char;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2547
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2548
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2549 case '{':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2550 if (syntax & RE_INTERVALS && syntax & RE_NO_BK_BRACES)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2551 goto handle_interval;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2552 else
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2553 goto normal_char;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2554
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2555
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2556 case '\\':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2557 if (p == pend) FREE_STACK_RETURN (REG_EESCAPE);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2558
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2559 /* Do not translate the character after the \, so that we can
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2560 distinguish, e.g., \B from \b, even if we normally would
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2561 translate, e.g., B to b. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2562 PATFETCH_RAW (c);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2563
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2564 switch (c)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2565 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2566 case '(':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2567 if (syntax & RE_NO_BK_PARENS)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2568 goto normal_backslash;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2569
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2570 handle_open:
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2571 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2572 int shy = 0;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2573 if (p+1 < pend)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2574 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2575 /* Look for a special (?...) construct */
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2576 if ((syntax & RE_SHY_GROUPS) && *p == '?')
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2577 {
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2578 PATFETCH (c); /* Gobble up the '?'. */
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2579 PATFETCH (c);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2580 switch (c)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2581 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2582 case ':': shy = 1; break;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2583 default:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2584 /* Only (?:...) is supported right now. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2585 FREE_STACK_RETURN (REG_BADPAT);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2586 }
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2587 }
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2588 }
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2589
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2590 if (!shy)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2591 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2592 bufp->re_nsub++;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2593 regnum++;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2594 }
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2595
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2596 if (COMPILE_STACK_FULL)
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2597 {
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2598 RETALLOC (compile_stack.stack, compile_stack.size << 1,
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2599 compile_stack_elt_t);
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2600 if (compile_stack.stack == NULL) return REG_ESPACE;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2601
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2602 compile_stack.size <<= 1;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2603 }
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2604
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2605 /* These are the values to restore when we hit end of this
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2606 group. They are all relative offsets, so that if the
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2607 whole pattern moves because of realloc, they will still
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2608 be valid. */
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2609 COMPILE_STACK_TOP.begalt_offset = begalt - bufp->buffer;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2610 COMPILE_STACK_TOP.fixup_alt_jump
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2611 = fixup_alt_jump ? fixup_alt_jump - bufp->buffer + 1 : 0;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2612 COMPILE_STACK_TOP.laststart_offset = b - bufp->buffer;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2613 COMPILE_STACK_TOP.regnum = shy ? -regnum : regnum;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2614
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2615 /* Do not push a
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2616 start_memory for groups beyond the last one we can
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2617 represent in the compiled pattern. */
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2618 if (regnum <= MAX_REGNUM && !shy)
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2619 BUF_PUSH_2 (start_memory, regnum);
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2620
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2621 compile_stack.avail++;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2622
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2623 fixup_alt_jump = 0;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2624 laststart = 0;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2625 begalt = b;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2626 /* If we've reached MAX_REGNUM groups, then this open
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2627 won't actually generate any code, so we'll have to
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2628 clear pending_exact explicitly. */
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2629 pending_exact = 0;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2630 break;
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2631 }
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2632
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2633 case ')':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2634 if (syntax & RE_NO_BK_PARENS) goto normal_backslash;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2635
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2636 if (COMPILE_STACK_EMPTY)
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2637 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2638 if (syntax & RE_UNMATCHED_RIGHT_PAREN_ORD)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2639 goto normal_backslash;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2640 else
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2641 FREE_STACK_RETURN (REG_ERPAREN);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2642 }
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2643
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2644 handle_close:
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2645 FIXUP_ALT_JUMP ();
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2646
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2647 /* See similar code for backslashed left paren above. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2648 if (COMPILE_STACK_EMPTY)
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2649 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2650 if (syntax & RE_UNMATCHED_RIGHT_PAREN_ORD)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2651 goto normal_char;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2652 else
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2653 FREE_STACK_RETURN (REG_ERPAREN);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2654 }
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2655
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2656 /* Since we just checked for an empty stack above, this
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2657 ``can't happen''. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2658 assert (compile_stack.avail != 0);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2659 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2660 /* We don't just want to restore into `regnum', because
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2661 later groups should continue to be numbered higher,
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2662 as in `(ab)c(de)' -- the second group is #2. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2663 regnum_t this_group_regnum;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2664
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2665 compile_stack.avail--;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2666 begalt = bufp->buffer + COMPILE_STACK_TOP.begalt_offset;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2667 fixup_alt_jump
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2668 = COMPILE_STACK_TOP.fixup_alt_jump
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2669 ? bufp->buffer + COMPILE_STACK_TOP.fixup_alt_jump - 1
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2670 : 0;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2671 laststart = bufp->buffer + COMPILE_STACK_TOP.laststart_offset;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2672 this_group_regnum = COMPILE_STACK_TOP.regnum;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2673 /* If we've reached MAX_REGNUM groups, then this open
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2674 won't actually generate any code, so we'll have to
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2675 clear pending_exact explicitly. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2676 pending_exact = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2677
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2678 /* We're at the end of the group, so now we know how many
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2679 groups were inside this one. */
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2680 if (this_group_regnum <= MAX_REGNUM && this_group_regnum > 0)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2681 BUF_PUSH_2 (stop_memory, this_group_regnum);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2682 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2683 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2684
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2685
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2686 case '|': /* `\|'. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2687 if (syntax & RE_LIMITED_OPS || syntax & RE_NO_BK_VBAR)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2688 goto normal_backslash;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2689 handle_alt:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2690 if (syntax & RE_LIMITED_OPS)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2691 goto normal_char;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2692
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2693 /* Insert before the previous alternative a jump which
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2694 jumps to this alternative if the former fails. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2695 GET_BUFFER_SPACE (3);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2696 INSERT_JUMP (on_failure_jump, begalt, b + 6);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2697 pending_exact = 0;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2698 b += 3;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2699
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2700 /* The alternative before this one has a jump after it
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2701 which gets executed if it gets matched. Adjust that
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2702 jump so it will jump to this alternative's analogous
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2703 jump (put in below, which in turn will jump to the next
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2704 (if any) alternative's such jump, etc.). The last such
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2705 jump jumps to the correct final destination. A picture:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2706 _____ _____
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2707 | | | |
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2708 | v | v
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2709 a | b | c
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2710
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2711 If we are at `b', then fixup_alt_jump right now points to a
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2712 three-byte space after `a'. We'll put in the jump, set
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2713 fixup_alt_jump to right after `b', and leave behind three
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2714 bytes which we'll fill in when we get to after `c'. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2715
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
2716 FIXUP_ALT_JUMP ();
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2717
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2718 /* Mark and leave space for a jump after this alternative,
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2719 to be filled in later either by next alternative or
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2720 when know we're at the end of a series of alternatives. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2721 fixup_alt_jump = b;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2722 GET_BUFFER_SPACE (3);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2723 b += 3;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2724
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2725 laststart = 0;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2726 begalt = b;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2727 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2728
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2729
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2730 case '{':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2731 /* If \{ is a literal. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2732 if (!(syntax & RE_INTERVALS)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2733 /* If we're at `\{' and it's not the open-interval
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2734 operator. */
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2735 || (syntax & RE_NO_BK_BRACES)
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2736 /* What is that? -sm */
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2737 /* || (p - 2 == pattern && p == pend) */)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2738 goto normal_backslash;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2739
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2740 handle_interval:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2741 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2742 /* If got here, then the syntax allows intervals. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2743
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2744 /* At least (most) this many matches must be made. */
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
2745 int lower_bound = 0, upper_bound = -1;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2746
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2747 beg_interval = p;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2748
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2749 if (p == pend)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2750 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2751 if (syntax & RE_NO_BK_BRACES)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2752 goto unfetch_interval;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2753 else
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2754 FREE_STACK_RETURN (REG_EBRACE);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2755 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2756
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2757 GET_UNSIGNED_NUMBER (lower_bound);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2758
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2759 if (c == ',')
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2760 GET_UNSIGNED_NUMBER (upper_bound);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2761 else
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2762 /* Interval such as `{1}' => match exactly once. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2763 upper_bound = lower_bound;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2764
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2765 if (lower_bound < 0 || upper_bound > RE_DUP_MAX
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2766 || (upper_bound >= 0 && lower_bound > upper_bound))
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2767 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2768 if (syntax & RE_NO_BK_BRACES)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2769 goto unfetch_interval;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2770 else
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2771 FREE_STACK_RETURN (REG_BADBR);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2772 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2773
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2774 if (!(syntax & RE_NO_BK_BRACES))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2775 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2776 if (c != '\\') FREE_STACK_RETURN (REG_EBRACE);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2777
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2778 PATFETCH (c);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2779 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2780
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2781 if (c != '}')
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2782 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2783 if (syntax & RE_NO_BK_BRACES)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2784 goto unfetch_interval;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2785 else
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2786 FREE_STACK_RETURN (REG_BADBR);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2787 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2788
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2789 /* We just parsed a valid interval. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2790
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2791 /* If it's invalid to have no preceding re. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2792 if (!laststart)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2793 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2794 if (syntax & RE_CONTEXT_INVALID_OPS)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2795 FREE_STACK_RETURN (REG_BADRPT);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2796 else if (syntax & RE_CONTEXT_INDEP_OPS)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2797 laststart = b;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2798 else
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2799 goto unfetch_interval;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2800 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2801
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2802 if (upper_bound == 0)
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2803 /* If the upper bound is zero, just drop the sub pattern
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2804 altogether. */
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2805 b = laststart;
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2806 else if (lower_bound == 1 && upper_bound == 1)
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2807 /* Just match it once: nothing to do here. */
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2808 ;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2809
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2810 /* Otherwise, we have a nontrivial interval. When
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2811 we're all done, the pattern will look like:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2812 set_number_at <jump count> <upper bound>
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2813 set_number_at <succeed_n count> <lower bound>
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2814 succeed_n <after jump addr> <succeed_n count>
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2815 <body of loop>
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2816 jump_n <succeed_n addr> <jump count>
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2817 (The upper bound and `jump_n' are omitted if
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2818 `upper_bound' is 1, though.) */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2819 else
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2820 { /* If the upper bound is > 1, we need to insert
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2821 more at the end of the loop. */
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2822 unsigned int nbytes = (upper_bound < 0 ? 3
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2823 : upper_bound > 1 ? 5 : 0);
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2824 unsigned int startoffset = 0;
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2825
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2826 GET_BUFFER_SPACE (20); /* We might use less. */
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2827
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2828 if (lower_bound == 0)
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2829 {
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2830 /* A succeed_n that starts with 0 is really a
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2831 a simple on_failure_jump_loop. */
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2832 INSERT_JUMP (on_failure_jump_loop, laststart,
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2833 b + 3 + nbytes);
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2834 b += 3;
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2835 }
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2836 else
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2837 {
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2838 /* Initialize lower bound of the `succeed_n', even
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2839 though it will be set during matching by its
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2840 attendant `set_number_at' (inserted next),
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2841 because `re_compile_fastmap' needs to know.
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2842 Jump to the `jump_n' we might insert below. */
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2843 INSERT_JUMP2 (succeed_n, laststart,
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2844 b + 5 + nbytes,
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2845 lower_bound);
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2846 b += 5;
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2847
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2848 /* Code to initialize the lower bound. Insert
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2849 before the `succeed_n'. The `5' is the last two
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2850 bytes of this `set_number_at', plus 3 bytes of
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2851 the following `succeed_n'. */
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2852 insert_op2 (set_number_at, laststart, 5, lower_bound, b);
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2853 b += 5;
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2854 startoffset += 5;
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2855 }
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2856
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2857 if (upper_bound < 0)
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2858 {
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2859 /* A negative upper bound stands for infinity,
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2860 in which case it degenerates to a plain jump. */
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2861 STORE_JUMP (jump, b, laststart + startoffset);
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2862 b += 3;
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2863 }
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2864 else if (upper_bound > 1)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2865 { /* More than one repetition is allowed, so
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2866 append a backward jump to the `succeed_n'
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2867 that starts this interval.
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2868
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2869 When we've reached this during matching,
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2870 we'll have matched the interval once, so
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2871 jump back only `upper_bound - 1' times. */
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2872 STORE_JUMP2 (jump_n, b, laststart + startoffset,
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2873 upper_bound - 1);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2874 b += 5;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2875
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2876 /* The location we want to set is the second
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2877 parameter of the `jump_n'; that is `b-2' as
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2878 an absolute address. `laststart' will be
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2879 the `set_number_at' we're about to insert;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2880 `laststart+3' the number to set, the source
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2881 for the relative address. But we are
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2882 inserting into the middle of the pattern --
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2883 so everything is getting moved up by 5.
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2884 Conclusion: (b - 2) - (laststart + 3) + 5,
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2885 i.e., b - laststart.
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2886
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2887 We insert this at the beginning of the loop
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2888 so that if we fail during matching, we'll
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2889 reinitialize the bounds. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2890 insert_op2 (set_number_at, laststart, b - laststart,
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2891 upper_bound - 1, b);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2892 b += 5;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2893 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2894 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2895 pending_exact = 0;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2896 beg_interval = NULL;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2897 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2898 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2899
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2900 unfetch_interval:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2901 /* If an invalid interval, match the characters as literals. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2902 assert (beg_interval);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2903 p = beg_interval;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2904 beg_interval = NULL;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2905
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2906 /* normal_char and normal_backslash need `c'. */
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2907 c = '{';
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2908
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2909 if (!(syntax & RE_NO_BK_BRACES))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2910 {
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2911 assert (p > pattern && p[-1] == '\\');
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2912 goto normal_backslash;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2913 }
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2914 else
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
2915 goto normal_char;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2916
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2917 #ifdef emacs
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2918 /* There is no way to specify the before_dot and after_dot
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2919 operators. rms says this is ok. --karl */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2920 case '=':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2921 BUF_PUSH (at_dot);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2922 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2923
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2924 case 's':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2925 laststart = b;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2926 PATFETCH (c);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2927 BUF_PUSH_2 (syntaxspec, syntax_spec_code[c]);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2928 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2929
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2930 case 'S':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2931 laststart = b;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2932 PATFETCH (c);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2933 BUF_PUSH_2 (notsyntaxspec, syntax_spec_code[c]);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2934 break;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2935
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2936 case 'c':
679
b088267ea1c8 Clean up whitespace.
Richard Stallman <rms@gnu.org>
parents: 678
diff changeset
2937 laststart = b;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2938 PATFETCH_RAW (c);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2939 BUF_PUSH_2 (categoryspec, c);
679
b088267ea1c8 Clean up whitespace.
Richard Stallman <rms@gnu.org>
parents: 678
diff changeset
2940 break;
b088267ea1c8 Clean up whitespace.
Richard Stallman <rms@gnu.org>
parents: 678
diff changeset
2941
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2942 case 'C':
679
b088267ea1c8 Clean up whitespace.
Richard Stallman <rms@gnu.org>
parents: 678
diff changeset
2943 laststart = b;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2944 PATFETCH_RAW (c);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
2945 BUF_PUSH_2 (notcategoryspec, c);
679
b088267ea1c8 Clean up whitespace.
Richard Stallman <rms@gnu.org>
parents: 678
diff changeset
2946 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2947 #endif /* emacs */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2948
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
2949
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2950 case 'w':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2951 laststart = b;
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
2952 BUF_PUSH_2 (syntaxspec, Sword);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2953 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2954
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2955
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2956 case 'W':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2957 laststart = b;
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
2958 BUF_PUSH_2 (notsyntaxspec, Sword);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2959 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2960
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2961
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2962 case '<':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2963 BUF_PUSH (wordbeg);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2964 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2965
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2966 case '>':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2967 BUF_PUSH (wordend);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2968 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2969
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2970 case 'b':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2971 BUF_PUSH (wordbound);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2972 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2973
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2974 case 'B':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2975 BUF_PUSH (notwordbound);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2976 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2977
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2978 case '`':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2979 BUF_PUSH (begbuf);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2980 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2981
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2982 case '\'':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2983 BUF_PUSH (endbuf);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2984 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2985
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2986 case '1': case '2': case '3': case '4': case '5':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2987 case '6': case '7': case '8': case '9':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2988 if (syntax & RE_NO_BK_REFS)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2989 goto normal_char;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2990
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2991 c1 = c - '0';
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2992
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2993 if (c1 > regnum)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2994 FREE_STACK_RETURN (REG_ESUBREG);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2995
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2996 /* Can't back reference to a subexpression if inside of it. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2997 if (group_in_compile_stack (compile_stack, c1))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2998 goto normal_char;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
2999
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3000 laststart = b;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3001 BUF_PUSH_2 (duplicate, c1);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3002 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3003
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3004
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3005 case '+':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3006 case '?':
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3007 if (syntax & RE_BK_PLUS_QM)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3008 goto handle_plus;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3009 else
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3010 goto normal_backslash;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3011
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3012 default:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3013 normal_backslash:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3014 /* You might think it would be useful for \ to mean
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3015 not to translate; but if we don't translate it
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3016 it will never match anything. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3017 c = TRANSLATE (c);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3018 goto normal_char;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3019 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3020 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3021
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3022
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3023 default:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3024 /* Expects the character in `c'. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3025 normal_char:
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3026 p1 = p - 1; /* P1 points the head of C. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3027 #ifdef emacs
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3028 if (bufp->multibyte)
1545
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3029 {
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3030 c = STRING_CHAR (p1, pend - p1);
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3031 c = TRANSLATE (c);
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3032 /* Set P to the next character boundary. */
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3033 p += MULTIBYTE_FORM_LENGTH (p1, pend - p1) - 1;
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3034 }
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3035 #endif
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3036 /* If no exactn currently being built. */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3037 if (!pending_exact
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3038
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3039 /* If last exactn not at current position. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3040 || pending_exact + *pending_exact + 1 != b
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3041
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3042 /* We have only one byte following the exactn for the count. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3043 || *pending_exact >= (1 << BYTEWIDTH) - (p - p1)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3044
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3045 /* If followed by a repetition operator. */
1342
e5cbc689bc64 (regex_compile): When checking after exactn
Richard Stallman <rms@gnu.org>
parents: 1335
diff changeset
3046 || (p != pend && (*p == '*' || *p == '^'))
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3047 || ((syntax & RE_BK_PLUS_QM)
1342
e5cbc689bc64 (regex_compile): When checking after exactn
Richard Stallman <rms@gnu.org>
parents: 1335
diff changeset
3048 ? p + 1 < pend && *p == '\\' && (p[1] == '+' || p[1] == '?')
e5cbc689bc64 (regex_compile): When checking after exactn
Richard Stallman <rms@gnu.org>
parents: 1335
diff changeset
3049 : p != pend && (*p == '+' || *p == '?'))
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3050 || ((syntax & RE_INTERVALS)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3051 && ((syntax & RE_NO_BK_BRACES)
1342
e5cbc689bc64 (regex_compile): When checking after exactn
Richard Stallman <rms@gnu.org>
parents: 1335
diff changeset
3052 ? p != pend && *p == '{'
e5cbc689bc64 (regex_compile): When checking after exactn
Richard Stallman <rms@gnu.org>
parents: 1335
diff changeset
3053 : p + 1 < pend && p[0] == '\\' && p[1] == '{')))
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3054 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3055 /* Start building a new exactn. */
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3056
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3057 laststart = b;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3058
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3059 BUF_PUSH_2 (exactn, 0);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3060 pending_exact = b - 1;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3061 }
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3062
1545
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3063 #ifdef emacs
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3064 if (! SINGLE_BYTE_CHAR_P (c))
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3065 {
2034
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
3066 unsigned char str[MAX_MULTIBYTE_LENGTH];
00db7733320d 1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents: 1972
diff changeset
3067 int i = CHAR_STRING (c, str);
1545
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3068 int j;
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3069 for (j = 0; j < i; j++)
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3070 {
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3071 BUF_PUSH (str[j]);
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3072 (*pending_exact)++;
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3073 }
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3074 }
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3075 else
84951ef7a5ed (regex_compile): Handle translation of multibyte
Karl Heuer <kwzh@gnu.org>
parents: 1440
diff changeset
3076 #endif
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3077 {
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3078 BUF_PUSH (c);
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3079 (*pending_exact)++;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3080 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3081 break;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3082 } /* switch (c) */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3083 } /* while p != pend */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3084
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3085
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3086 /* Through the pattern now. */
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3087
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3088 FIXUP_ALT_JUMP ();
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3089
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3090 if (!COMPILE_STACK_EMPTY)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3091 FREE_STACK_RETURN (REG_EPAREN);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3092
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3093 /* If we don't want backtracking, force success
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3094 the first time we reach the end of the compiled pattern. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3095 if (syntax & RE_NO_POSIX_BACKTRACKING)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3096 BUF_PUSH (succeed);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3097
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3098 free (compile_stack.stack);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3099
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3100 /* We have succeeded; set the length of the buffer. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3101 bufp->used = b - bufp->buffer;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3102
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3103 #ifdef DEBUG
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
3104 if (debug > 0)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3105 {
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3106 re_compile_fastmap (bufp);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3107 DEBUG_PRINT1 ("\nCompiled pattern: \n");
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3108 print_compiled_pattern (bufp);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3109 }
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
3110 debug--;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3111 #endif /* DEBUG */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3112
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3113 #ifndef MATCH_MAY_ALLOCATE
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3114 /* Initialize the failure stack to the largest possible stack. This
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3115 isn't necessary unless we're trying to avoid calling alloca in
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3116 the search and match routines. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3117 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3118 int num_regs = bufp->re_nsub + 1;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3119
1156
8e1cbb305ddc (TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents: 992
diff changeset
3120 if (fail_stack.size < re_max_failures * TYPICAL_FAILURE_SIZE)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3121 {
1297
ac5117571763 (regex_compile) [!MATCH_MAY_ALLOCATE]: Fix paren error.
Richard Stallman <rms@gnu.org>
parents: 1296
diff changeset
3122 fail_stack.size = re_max_failures * TYPICAL_FAILURE_SIZE;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3123
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3124 if (! fail_stack.stack)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3125 fail_stack.stack
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3126 = (fail_stack_elt_t *) malloc (fail_stack.size
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3127 * sizeof (fail_stack_elt_t));
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3128 else
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3129 fail_stack.stack
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3130 = (fail_stack_elt_t *) realloc (fail_stack.stack,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3131 (fail_stack.size
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3132 * sizeof (fail_stack_elt_t)));
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3133 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3134
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3135 regex_grow_registers (num_regs);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3136 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3137 #endif /* not MATCH_MAY_ALLOCATE */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3138
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3139 return REG_NOERROR;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3140 } /* regex_compile */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3141
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3142 /* Subroutines for `regex_compile'. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3143
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3144 /* Store OP at LOC followed by two-byte integer parameter ARG. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3145
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3146 static void
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3147 store_op1 (op, loc, arg)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3148 re_opcode_t op;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3149 unsigned char *loc;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3150 int arg;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3151 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3152 *loc = (unsigned char) op;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3153 STORE_NUMBER (loc + 1, arg);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3154 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3155
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3156
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3157 /* Like `store_op1', but for two two-byte parameters ARG1 and ARG2. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3158
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3159 static void
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3160 store_op2 (op, loc, arg1, arg2)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3161 re_opcode_t op;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3162 unsigned char *loc;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3163 int arg1, arg2;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3164 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3165 *loc = (unsigned char) op;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3166 STORE_NUMBER (loc + 1, arg1);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3167 STORE_NUMBER (loc + 3, arg2);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3168 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3169
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3170
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3171 /* Copy the bytes from LOC to END to open up three bytes of space at LOC
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3172 for OP followed by two-byte integer parameter ARG. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3173
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3174 static void
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3175 insert_op1 (op, loc, arg, end)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3176 re_opcode_t op;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3177 unsigned char *loc;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3178 int arg;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3179 unsigned char *end;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3180 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3181 register unsigned char *pfrom = end;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3182 register unsigned char *pto = end + 3;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3183
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3184 while (pfrom != loc)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3185 *--pto = *--pfrom;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3186
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3187 store_op1 (op, loc, arg);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3188 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3189
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3190
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3191 /* Like `insert_op1', but for two two-byte parameters ARG1 and ARG2. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3192
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3193 static void
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3194 insert_op2 (op, loc, arg1, arg2, end)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3195 re_opcode_t op;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3196 unsigned char *loc;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3197 int arg1, arg2;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3198 unsigned char *end;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3199 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3200 register unsigned char *pfrom = end;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3201 register unsigned char *pto = end + 5;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3202
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3203 while (pfrom != loc)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3204 *--pto = *--pfrom;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3205
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3206 store_op2 (op, loc, arg1, arg2);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3207 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3208
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3209
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3210 /* P points to just after a ^ in PATTERN. Return true if that ^ comes
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3211 after an alternative or a begin-subexpression. We assume there is at
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3212 least one character before the ^. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3213
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3214 static boolean
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3215 at_begline_loc_p (pattern, p, syntax)
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
3216 const unsigned char *pattern, *p;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3217 reg_syntax_t syntax;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3218 {
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
3219 const unsigned char *prev = p - 2;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3220 boolean prev_prev_backslash = prev > pattern && prev[-1] == '\\';
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3221
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3222 return
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3223 /* After a subexpression? */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3224 (*prev == '(' && (syntax & RE_NO_BK_PARENS || prev_prev_backslash))
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3225 /* After an alternative? */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3226 || (*prev == '|' && (syntax & RE_NO_BK_VBAR || prev_prev_backslash));
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3227 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3228
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3229
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3230 /* The dual of at_begline_loc_p. This one is for $. We assume there is
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3231 at least one character after the $, i.e., `P < PEND'. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3232
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3233 static boolean
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3234 at_endline_loc_p (p, pend, syntax)
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
3235 const unsigned char *p, *pend;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
3236 reg_syntax_t syntax;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3237 {
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
3238 const unsigned char *next = p;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3239 boolean next_backslash = *next == '\\';
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
3240 const unsigned char *next_next = p + 1 < pend ? p + 1 : 0;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3241
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3242 return
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3243 /* Before a subexpression? */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3244 (syntax & RE_NO_BK_PARENS ? *next == ')'
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3245 : next_backslash && next_next && *next_next == ')')
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3246 /* Before an alternative? */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3247 || (syntax & RE_NO_BK_VBAR ? *next == '|'
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3248 : next_backslash && next_next && *next_next == '|');
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3249 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3250
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3251
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3252 /* Returns true if REGNUM is in one of COMPILE_STACK's elements and
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3253 false if it's not. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3254
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3255 static boolean
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3256 group_in_compile_stack (compile_stack, regnum)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3257 compile_stack_type compile_stack;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3258 regnum_t regnum;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3259 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3260 int this_element;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3261
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3262 for (this_element = compile_stack.avail - 1;
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3263 this_element >= 0;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3264 this_element--)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3265 if (compile_stack.stack[this_element].regnum == regnum)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3266 return true;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3267
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3268 return false;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3269 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3270
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3271 /* re_compile_fastmap computes a ``fastmap'' for the compiled pattern in
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3272 BUFP. A fastmap records which of the (1 << BYTEWIDTH) possible
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3273 characters can start a string that matches the pattern. This fastmap
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3274 is used by re_search to skip quickly over impossible starting points.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3275
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
3276 Character codes above (1 << BYTEWIDTH) are not represented in the
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
3277 fastmap, but the leading codes are represented. Thus, the fastmap
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
3278 indicates which character sets could start a match.
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
3279
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3280 The caller must supply the address of a (1 << BYTEWIDTH)-byte data
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3281 area as BUFP->fastmap.
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3282
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3283 We set the `fastmap', `fastmap_accurate', and `can_be_null' fields in
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3284 the pattern buffer.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3285
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3286 Returns 0 if we succeed, -2 if an internal error. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3287
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3288 int
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3289 re_compile_fastmap (bufp)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3290 struct re_pattern_buffer *bufp;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3291 {
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3292 int j, k;
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3293 boolean not;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3294 #ifdef MATCH_MAY_ALLOCATE
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3295 fail_stack_type fail_stack;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3296 #endif
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3297 #ifndef REGEX_MALLOC
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3298 char *destination;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3299 #endif
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3300
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3301 register char *fastmap = bufp->fastmap;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3302 unsigned char *pattern = bufp->buffer;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3303 unsigned long size = bufp->used;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3304 unsigned char *p = pattern;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3305 register unsigned char *pend = pattern + size;
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3306 const boolean multibyte = bufp->multibyte;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3307
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
3308 #if defined (REL_ALLOC) && defined (REGEX_MALLOC)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3309 /* This holds the pointer to the failure stack, when
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3310 it is allocated relocatably. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3311 fail_stack_elt_t *failure_stack_ptr;
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
3312 #endif
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3313
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3314 /* Assume that each path through the pattern can be null until
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3315 proven otherwise. We set this false at the bottom of switch
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3316 statement, to which we get only if a particular path doesn't
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3317 match the empty string. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3318 boolean path_can_be_null = true;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3319
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3320 /* If all elements for base leading-codes in fastmap is set, this
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3321 flag is set true. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3322 boolean match_any_multibyte_characters = false;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3323
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3324 assert (fastmap != NULL && p != NULL);
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3325
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3326 INIT_FAIL_STACK ();
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3327 bzero (fastmap, 1 << BYTEWIDTH); /* Assume nothing's valid. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3328 bufp->fastmap_accurate = 1; /* It will be when we're done. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3329 bufp->can_be_null = 0;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3330
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3331 /* The loop below works as follows:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3332 - It has a working-list kept in the PATTERN_STACK and which basically
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3333 starts by only containing a pointer to the first operation.
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3334 - If the opcode we're looking at is a match against some set of
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3335 chars, then we add those chars to the fastmap and go on to the
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3336 next work element from the worklist (done via `break').
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3337 - If the opcode is a control operator on the other hand, we either
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3338 ignore it (if it's meaningless at this point, such as `start_memory')
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3339 or execute it (if it's a jump). If the jump has several destinations
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3340 (i.e. `on_failure_jump'), then we push the other destination onto the
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3341 worklist.
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3342 We guarantee termination by ignoring backward jumps (more or less),
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3343 so that `p' is monotonically increasing. More to the point, we
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3344 never set `p' (or push) anything `<= p1'. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3346 /* If can_be_null is set, then the fastmap will not be used anyway. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3347 while (!bufp->can_be_null)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3348 {
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3349 /* `p1' is used as a marker of how far back a `on_failure_jump'
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3350 can go without being ignored. It is normally equal to `p'
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3351 (which prevents any backward `on_failure_jump') except right
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3352 after a plain `jump', to allow patterns such as:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3353 0: jump 10
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3354 3..9: <body>
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3355 10: on_failure_jump 3
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3356 as used for the *? operator. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3357 unsigned char *p1 = p;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3358
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3359 if (p >= pend || *p == succeed)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3360 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3361 /* We have reached the (effective) end of pattern. */
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3362 if (!PATTERN_STACK_EMPTY ())
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3363 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3364 bufp->can_be_null |= path_can_be_null;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3365
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3366 /* Reset for next path. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3367 path_can_be_null = true;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3368
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
3369 p = (unsigned char*) POP_PATTERN_OP ();
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3370
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3371 continue;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3372 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3373 else
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3374 break;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3375 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3376
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3377 /* We should never be about to go beyond the end of the pattern. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3378 assert (p < pend);
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3379
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3380 switch (SWITCH_ENUM_CAST ((re_opcode_t) *p++))
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3381 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3382
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3383 case duplicate:
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3384 /* If the first character has to match a backreference, that means
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3385 that the group was empty (since it already matched). Since this
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3386 is the only case that interests us here, we can assume that the
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3387 backreference must match the empty string. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3388 p++;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3389 continue;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3390
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3391
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3392 /* Following are the cases which match a character. These end
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3393 with `break'. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3394
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3395 case exactn:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3396 fastmap[p[1]] = 1;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3397 break;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3398
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3399
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3400 case anychar:
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3401 /* We could put all the chars except for \n (and maybe \0)
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3402 but we don't bother since it is generally not worth it. */
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3403 bufp->can_be_null = 1;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3404 continue;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3405
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3406
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3407 case charset_not:
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3408 /* Chars beyond end of bitmap are possible matches.
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3409 All the single-byte codes can occur in multibyte buffers.
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3410 So any that are not listed in the charset
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3411 are possible matches, even in multibyte buffers. */
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3412 if (!fastmap) break;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3413 for (j = CHARSET_BITMAP_SIZE (&p[-1]) * BYTEWIDTH;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3414 j < (1 << BYTEWIDTH); j++)
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3415 fastmap[j] = 1;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3416 /* Fallthrough */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3417 case charset:
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3418 if (!fastmap) break;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3419 not = (re_opcode_t) *(p - 1) == charset_not;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3420 for (j = CHARSET_BITMAP_SIZE (&p[-1]) * BYTEWIDTH - 1, p++;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3421 j >= 0; j--)
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3422 if (!!(p[j / BYTEWIDTH] & (1 << (j % BYTEWIDTH))) ^ not)
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3423 fastmap[j] = 1;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3424
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3425 if ((not && multibyte)
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3426 /* Any character set can possibly contain a character
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3427 which doesn't match the specified set of characters. */
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3428 || (CHARSET_RANGE_TABLE_EXISTS_P (&p[-2])
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3429 && CHARSET_RANGE_TABLE_BITS (&p[-2]) != 0))
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3430 /* If we can match a character class, we can match
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3431 any character set. */
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3432 {
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3433 set_fastmap_for_multibyte_characters:
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3434 if (match_any_multibyte_characters == false)
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3435 {
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3436 for (j = 0x80; j < 0xA0; j++) /* XXX */
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3437 if (BASE_LEADING_CODE_P (j))
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3438 fastmap[j] = 1;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3439 match_any_multibyte_characters = true;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3440 }
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3441 }
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3442
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3443 else if (!not && CHARSET_RANGE_TABLE_EXISTS_P (&p[-2])
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3444 && match_any_multibyte_characters == false)
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3445 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3446 /* Set fastmap[I] 1 where I is a base leading code of each
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3447 multibyte character in the range table. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3448 int c, count;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3449
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3450 /* Make P points the range table. `+ 2' is to skip flag
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3451 bits for a character class. */
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3452 p += CHARSET_BITMAP_SIZE (&p[-2]) + 2;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3453
1965
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
3454 /* Extract the number of ranges in range table into COUNT. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3455 EXTRACT_NUMBER_AND_INCR (count, p);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3456 for (; count > 0; count--, p += 2 * 3) /* XXX */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3457 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3458 /* Extract the start of each range. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3459 EXTRACT_CHARACTER (c, p);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3460 j = CHAR_CHARSET (c);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3461 fastmap[CHARSET_LEADING_CODE_BASE (j)] = 1;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3462 }
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3463 }
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3464 break;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3465
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3466 case syntaxspec:
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3467 case notsyntaxspec:
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3468 if (!fastmap) break;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3469 #ifndef emacs
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3470 not = (re_opcode_t)p[-1] == notsyntaxspec;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3471 k = *p++;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3472 for (j = 0; j < (1 << BYTEWIDTH); j++)
2359
dbf725277cfc (enum syntaxcode): Provide default for non-Emacs.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2357
diff changeset
3473 if ((SYNTAX (j) == (enum syntaxcode) k) ^ not)
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3474 fastmap[j] = 1;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3475 break;
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3476 #else /* emacs */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3477 /* This match depends on text properties. These end with
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3478 aborting optimizations. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3479 bufp->can_be_null = 1;
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3480 continue;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3481
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3482 case categoryspec:
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3483 case notcategoryspec:
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3484 if (!fastmap) break;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3485 not = (re_opcode_t)p[-1] == notcategoryspec;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3486 k = *p++;
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3487 for (j = 0; j < (1 << BYTEWIDTH); j++)
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3488 if ((CHAR_HAS_CATEGORY (j, k)) ^ not)
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3489 fastmap[j] = 1;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3490
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3491 if (multibyte)
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3492 /* Any character set can possibly contain a character
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3493 whose category is K (or not). */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3494 goto set_fastmap_for_multibyte_characters;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3495 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3496
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3497 /* All cases after this match the empty string. These end with
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3498 `continue'. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3499
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3500 case before_dot:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3501 case at_dot:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3502 case after_dot:
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
3503 #endif /* !emacs */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3504 case no_op:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3505 case begline:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3506 case endline:
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3507 case begbuf:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3508 case endbuf:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3509 case wordbound:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3510 case notwordbound:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3511 case wordbeg:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3512 case wordend:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3513 continue;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3514
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3515
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3516 case jump:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3517 EXTRACT_NUMBER_AND_INCR (j, p);
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3518 if (j < 0)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3519 /* Backward jumps can only go back to code that we've already
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3520 visited. `re_compile' should make sure this is true. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3521 break;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3522 p += j;
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3523 switch (SWITCH_ENUM_CAST ((re_opcode_t) *p))
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3524 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3525 case on_failure_jump:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3526 case on_failure_keep_string_jump:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3527 case on_failure_jump_loop:
2370
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
3528 case on_failure_jump_nastyloop:
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3529 case on_failure_jump_smart:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3530 p++;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3531 break;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3532 default:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3533 continue;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3534 };
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3535 /* Keep `p1' to allow the `on_failure_jump' we are jumping to
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3536 to jump back to "just after here". */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3537 /* Fallthrough */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3538
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3539 case on_failure_jump:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3540 case on_failure_keep_string_jump:
2370
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
3541 case on_failure_jump_nastyloop:
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3542 case on_failure_jump_loop:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3543 case on_failure_jump_smart:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3544 EXTRACT_NUMBER_AND_INCR (j, p);
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3545 if (p + j <= p1)
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3546 ; /* Backward jump to be ignored. */
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3547 else if (!PUSH_PATTERN_OP (p + j, fail_stack))
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3548 return (RESET_FAIL_STACK (), -2);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3549 continue;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3550
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3551
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3552 case jump_n:
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3553 /* This code simply does not properly handle forward jump_n. */
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3554 DEBUG_STATEMENT (EXTRACT_NUMBER (j, p); assert (j < 0));
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3555 p += 4;
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3556 /* jump_n can either jump or fall through. The (backward) jump
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3557 case has already been handled, so we only need to look at the
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3558 fallthrough case. */
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3559 continue;
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3560
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3561 case succeed_n:
2371
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3562 /* If N == 0, it should be an on_failure_jump_loop instead. */
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3563 DEBUG_STATEMENT (EXTRACT_NUMBER (j, p + 2); assert (j > 0));
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3564 p += 4;
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3565 /* We only care about one iteration of the loop, so we don't
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3566 need to consider the case where this behaves like an
3274fb530385 (REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2370
diff changeset
3567 on_failure_jump. */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3568 continue;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3569
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3570
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3571 case set_number_at:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3572 p += 4;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3573 continue;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3574
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3575
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3576 case start_memory:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3577 case stop_memory:
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3578 p += 1;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3579 continue;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3580
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3581
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3582 default:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3583 abort (); /* We have listed all the cases. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3584 } /* switch *p++ */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3585
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3586 /* Getting here means we have found the possible starting
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3587 characters for one path of the pattern -- and that the empty
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3588 string does not match. We need not follow this path further.
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3589 Instead, look at the next alternative (remembered on the
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3590 stack), or quit if no more. The test at the top of the loop
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3591 does these things. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3592 path_can_be_null = false;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3593 p = pend;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3594 } /* while p */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3595
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3596 /* Set `can_be_null' for the last path (also the first path, if the
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3597 pattern is empty). */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3598 bufp->can_be_null |= path_can_be_null;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3599 RESET_FAIL_STACK ();
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3600 return 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3601 } /* re_compile_fastmap */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3602
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3603 /* Set REGS to hold NUM_REGS registers, storing them in STARTS and
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3604 ENDS. Subsequent matches using PATTERN_BUFFER and REGS will use
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3605 this memory for recording register information. STARTS and ENDS
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3606 must be allocated using the malloc library routine, and must each
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3607 be at least NUM_REGS * sizeof (regoff_t) bytes long.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3608
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3609 If NUM_REGS == 0, then subsequent matches should allocate their own
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3610 register data.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3611
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3612 Unless this function is called, the first search or match using
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3613 PATTERN_BUFFER will allocate its own register data, without
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3614 freeing the old data. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3615
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3616 void
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3617 re_set_registers (bufp, regs, num_regs, starts, ends)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3618 struct re_pattern_buffer *bufp;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3619 struct re_registers *regs;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3620 unsigned num_regs;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3621 regoff_t *starts, *ends;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3622 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3623 if (num_regs)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3624 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3625 bufp->regs_allocated = REGS_REALLOCATE;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3626 regs->num_regs = num_regs;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3627 regs->start = starts;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3628 regs->end = ends;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3629 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3630 else
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3631 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3632 bufp->regs_allocated = REGS_UNALLOCATED;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3633 regs->num_regs = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3634 regs->start = regs->end = (regoff_t *) 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3635 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3636 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3637
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3638 /* Searching routines. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3639
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3640 /* Like re_search_2, below, but only one string is specified, and
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3641 doesn't let you say where to stop matching. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3642
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3643 int
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3644 re_search (bufp, string, size, startpos, range, regs)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3645 struct re_pattern_buffer *bufp;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3646 const char *string;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3647 int size, startpos, range;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3648 struct re_registers *regs;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3649 {
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3650 return re_search_2 (bufp, NULL, 0, string, size, startpos, range,
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3651 regs, size);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3652 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3653
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3654 /* End address of virtual concatenation of string. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3655 #define STOP_ADDR_VSTRING(P) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3656 (((P) >= size1 ? string2 + size2 : string1 + size1))
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3657
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3658 /* Address of POS in the concatenation of virtual string. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3659 #define POS_ADDR_VSTRING(POS) \
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3660 (((POS) >= size1 ? string2 - size1 : string1) + (POS))
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3661
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3662 /* Using the compiled pattern in BUFP->buffer, first tries to match the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3663 virtual concatenation of STRING1 and STRING2, starting first at index
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3664 STARTPOS, then at STARTPOS + 1, and so on.
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3665
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3666 STRING1 and STRING2 have length SIZE1 and SIZE2, respectively.
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3667
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3668 RANGE is how far to scan while trying to match. RANGE = 0 means try
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3669 only at STARTPOS; in general, the last start tried is STARTPOS +
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3670 RANGE.
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3671
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3672 In REGS, return the indices of the virtual concatenation of STRING1
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3673 and STRING2 that matched the entire BUFP->buffer and its contained
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3674 subexpressions.
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3675
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3676 Do not consider matching one past the index STOP in the virtual
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3677 concatenation of STRING1 and STRING2.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3678
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3679 We return either the position in the strings at which the match was
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3680 found, -1 if no match, or -2 if error (such as failure
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3681 stack overflow). */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3682
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3683 int
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
3684 re_search_2 (bufp, str1, size1, str2, size2, startpos, range, regs, stop)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3685 struct re_pattern_buffer *bufp;
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
3686 const char *str1, *str2;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3687 int size1, size2;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3688 int startpos;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3689 int range;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3690 struct re_registers *regs;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3691 int stop;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3692 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3693 int val;
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
3694 re_char *string1 = (re_char*) str1;
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
3695 re_char *string2 = (re_char*) str2;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3696 register char *fastmap = bufp->fastmap;
501
f29b13c2cefd (TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents: 490
diff changeset
3697 register RE_TRANSLATE_TYPE translate = bufp->translate;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3698 int total_size = size1 + size2;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3699 int endpos = startpos + range;
678
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3700 int anchored_start = 0;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3701
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3702 /* Nonzero if we have to concern multibyte character. */
2370
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
3703 const boolean multibyte = bufp->multibyte;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3704
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3705 /* Check for out-of-range STARTPOS. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3706 if (startpos < 0 || startpos > total_size)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3707 return -1;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3708
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3709 /* Fix up RANGE if it might eventually take us outside
490
985fe9826996 (re_search_2): Use 0, not -1, as the lower bound
Richard Stallman <rms@gnu.org>
parents: 481
diff changeset
3710 the virtual concatenation of STRING1 and STRING2.
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3711 Make sure we won't move STARTPOS below 0 or above TOTAL_SIZE. */
490
985fe9826996 (re_search_2): Use 0, not -1, as the lower bound
Richard Stallman <rms@gnu.org>
parents: 481
diff changeset
3712 if (endpos < 0)
985fe9826996 (re_search_2): Use 0, not -1, as the lower bound
Richard Stallman <rms@gnu.org>
parents: 481
diff changeset
3713 range = 0 - startpos;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3714 else if (endpos > total_size)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3715 range = total_size - startpos;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3716
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3717 /* If the search isn't to be a backwards one, don't waste time in a
1329
818db3848f2b (re_search_2): Fix handling of at_dot.
Richard Stallman <rms@gnu.org>
parents: 1328
diff changeset
3718 search for a pattern anchored at beginning of buffer. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3719 if (bufp->used > 0 && (re_opcode_t) bufp->buffer[0] == begbuf && range > 0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3720 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3721 if (startpos > 0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3722 return -1;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3723 else
1329
818db3848f2b (re_search_2): Fix handling of at_dot.
Richard Stallman <rms@gnu.org>
parents: 1328
diff changeset
3724 range = 0;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3725 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3726
481
35afc74165b7 (re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents: 480
diff changeset
3727 #ifdef emacs
35afc74165b7 (re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents: 480
diff changeset
3728 /* In a forward search for something that starts with \=.
35afc74165b7 (re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents: 480
diff changeset
3729 don't keep searching past point. */
35afc74165b7 (re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents: 480
diff changeset
3730 if (bufp->used > 0 && (re_opcode_t) bufp->buffer[0] == at_dot && range > 0)
35afc74165b7 (re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents: 480
diff changeset
3731 {
1329
818db3848f2b (re_search_2): Fix handling of at_dot.
Richard Stallman <rms@gnu.org>
parents: 1328
diff changeset
3732 range = PT_BYTE - BEGV_BYTE - startpos;
818db3848f2b (re_search_2): Fix handling of at_dot.
Richard Stallman <rms@gnu.org>
parents: 1328
diff changeset
3733 if (range < 0)
481
35afc74165b7 (re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents: 480
diff changeset
3734 return -1;
35afc74165b7 (re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents: 480
diff changeset
3735 }
35afc74165b7 (re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents: 480
diff changeset
3736 #endif /* emacs */
35afc74165b7 (re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents: 480
diff changeset
3737
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3738 /* Update the fastmap now if not correct already. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3739 if (fastmap && !bufp->fastmap_accurate)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3740 if (re_compile_fastmap (bufp) == -2)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3741 return -2;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3742
678
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3743 /* See whether the pattern is anchored. */
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3744 if (bufp->buffer[0] == begline)
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3745 anchored_start = 1;
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3746
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3747 #ifdef emacs
1321
a37088328c87 (re_match_2, re_search_2): Convert position to a charpos,
Karl Heuer <kwzh@gnu.org>
parents: 1313
diff changeset
3748 gl_state.object = re_match_object;
a37088328c87 (re_match_2, re_search_2): Convert position to a charpos,
Karl Heuer <kwzh@gnu.org>
parents: 1313
diff changeset
3749 {
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
3750 int charpos = SYNTAX_TABLE_BYTE_TO_CHAR (POS_AS_IN_BUFFER (startpos));
1321
a37088328c87 (re_match_2, re_search_2): Convert position to a charpos,
Karl Heuer <kwzh@gnu.org>
parents: 1313
diff changeset
3751
a37088328c87 (re_match_2, re_search_2): Convert position to a charpos,
Karl Heuer <kwzh@gnu.org>
parents: 1313
diff changeset
3752 SETUP_SYNTAX_TABLE_FOR_OBJECT (re_match_object, charpos, 1);
a37088328c87 (re_match_2, re_search_2): Convert position to a charpos,
Karl Heuer <kwzh@gnu.org>
parents: 1313
diff changeset
3753 }
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3754 #endif
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3755
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3756 /* Loop through the string, looking for a place to start matching. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3757 for (;;)
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3758 {
678
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3759 /* If the pattern is anchored,
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3760 skip quickly past places we cannot match.
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3761 We don't bother to treat startpos == 0 specially
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3762 because that case doesn't repeat. */
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3763 if (anchored_start && startpos > 0)
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3764 {
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3765 if (! (bufp->newline_anchor
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3766 && ((startpos <= size1 ? string1[startpos - 1]
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3767 : string2[startpos - size1 - 1])
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3768 == '\n')))
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3769 goto advance;
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3770 }
bd677f8ba924 (re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents: 677
diff changeset
3771
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3772 /* If a fastmap is supplied, skip quickly over characters that
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3773 cannot be the start of a match. If the pattern can match the
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3774 null string, however, we don't need to skip characters; we want
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3775 the first null string. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3776 if (fastmap && startpos < total_size && !bufp->can_be_null)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3777 {
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
3778 register re_char *d;
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3779 register unsigned int buf_ch;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3780
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3781 d = POS_ADDR_VSTRING (startpos);
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3782
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3783 if (range > 0) /* Searching forwards. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3784 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3785 register int lim = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3786 int irange = range;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3787
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3788 if (startpos < size1 && startpos + range >= size1)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3789 lim = range - (size1 - startpos);
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3790
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3791 /* Written out as an if-else to avoid testing `translate'
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3792 inside the loop. */
1335
97f50084cc62 (re_search_2): Fix indentation.
Andreas Schwab <schwab@suse.de>
parents: 1329
diff changeset
3793 if (RE_TRANSLATE_P (translate))
97f50084cc62 (re_search_2): Fix indentation.
Andreas Schwab <schwab@suse.de>
parents: 1329
diff changeset
3794 {
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3795 if (multibyte)
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3796 while (range > lim)
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3797 {
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3798 int buf_charlen;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3799
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3800 buf_ch = STRING_CHAR_AND_LENGTH (d, range - lim,
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3801 buf_charlen);
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3802
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3803 buf_ch = RE_TRANSLATE (translate, buf_ch);
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3804 if (buf_ch >= 0400
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3805 || fastmap[buf_ch])
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3806 break;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3807
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3808 range -= buf_charlen;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3809 d += buf_charlen;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3810 }
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3811 else
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3812 while (range > lim
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
3813 && !fastmap[RE_TRANSLATE (translate, *d)])
1381
24423cbaf6a9 (re_search_2): Don't use ++ inside RE_TRANSLATE.
Richard Stallman <rms@gnu.org>
parents: 1342
diff changeset
3814 {
24423cbaf6a9 (re_search_2): Don't use ++ inside RE_TRANSLATE.
Richard Stallman <rms@gnu.org>
parents: 1342
diff changeset
3815 d++;
24423cbaf6a9 (re_search_2): Don't use ++ inside RE_TRANSLATE.
Richard Stallman <rms@gnu.org>
parents: 1342
diff changeset
3816 range--;
24423cbaf6a9 (re_search_2): Don't use ++ inside RE_TRANSLATE.
Richard Stallman <rms@gnu.org>
parents: 1342
diff changeset
3817 }
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3818 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3819 else
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
3820 while (range > lim && !fastmap[*d])
1381
24423cbaf6a9 (re_search_2): Don't use ++ inside RE_TRANSLATE.
Richard Stallman <rms@gnu.org>
parents: 1342
diff changeset
3821 {
24423cbaf6a9 (re_search_2): Don't use ++ inside RE_TRANSLATE.
Richard Stallman <rms@gnu.org>
parents: 1342
diff changeset
3822 d++;
24423cbaf6a9 (re_search_2): Don't use ++ inside RE_TRANSLATE.
Richard Stallman <rms@gnu.org>
parents: 1342
diff changeset
3823 range--;
24423cbaf6a9 (re_search_2): Don't use ++ inside RE_TRANSLATE.
Richard Stallman <rms@gnu.org>
parents: 1342
diff changeset
3824 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3825
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3826 startpos += irange - range;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3827 }
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3828 else /* Searching backwards. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3829 {
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
3830 buf_ch = STRING_CHAR (d, (startpos >= size1
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
3831 ? size2 + size1 - startpos
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
3832 : size1 - startpos));
1328
0aa10b723959 Use RE_TRANSLATE_P to check whether translation is
Andreas Schwab <schwab@suse.de>
parents: 1326
diff changeset
3833 if (RE_TRANSLATE_P (translate))
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3834 buf_ch = RE_TRANSLATE (translate, buf_ch);
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3835
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3836 if (! (buf_ch >= 0400
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
3837 || fastmap[buf_ch]))
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3838 goto advance;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3839 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3840 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3841
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3842 /* If can't match the null string, and that's all we have left, fail. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3843 if (range >= 0 && startpos == total_size && fastmap
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3844 && !bufp->can_be_null)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3845 return -1;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3846
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3847 val = re_match_2_internal (bufp, string1, size1, string2, size2,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3848 startpos, regs, stop);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3849 #ifndef REGEX_MALLOC
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3850 #ifdef C_ALLOCA
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3851 alloca (0);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3852 #endif
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3853 #endif
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3854
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3855 if (val >= 0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3856 return startpos;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3857
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3858 if (val == -2)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3859 return -2;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3860
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3861 advance:
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3862 if (!range)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3863 break;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3864 else if (range > 0)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3865 {
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3866 /* Update STARTPOS to the next character boundary. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3867 if (multibyte)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3868 {
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
3869 re_char *p = POS_ADDR_VSTRING (startpos);
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
3870 re_char *pend = STOP_ADDR_VSTRING (startpos);
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3871 int len = MULTIBYTE_FORM_LENGTH (p, pend - p);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3872
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3873 range -= len;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3874 if (range < 0)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3875 break;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3876 startpos += len;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3877 }
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3878 else
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3879 {
961
6959c7741ed2 (re_search_2): Cast result of POS_ADDR_VSTRING.
Richard Stallman <rms@gnu.org>
parents: 942
diff changeset
3880 range--;
6959c7741ed2 (re_search_2): Cast result of POS_ADDR_VSTRING.
Richard Stallman <rms@gnu.org>
parents: 942
diff changeset
3881 startpos++;
6959c7741ed2 (re_search_2): Cast result of POS_ADDR_VSTRING.
Richard Stallman <rms@gnu.org>
parents: 942
diff changeset
3882 }
679
b088267ea1c8 Clean up whitespace.
Richard Stallman <rms@gnu.org>
parents: 678
diff changeset
3883 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3884 else
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3885 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3886 range++;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3887 startpos--;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3888
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3889 /* Update STARTPOS to the previous character boundary. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3890 if (multibyte)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3891 {
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
3892 re_char *p = POS_ADDR_VSTRING (startpos);
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3893 int len = 0;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3894
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3895 /* Find the head of multibyte form. */
1204
28ff40a118b8 (re_search_2): Fix call to CHAR_HEAD_P.
Richard Stallman <rms@gnu.org>
parents: 1158
diff changeset
3896 while (!CHAR_HEAD_P (*p))
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3897 p--, len++;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3898
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3899 /* Adjust it. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3900 #if 0 /* XXX */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3901 if (MULTIBYTE_FORM_LENGTH (p, len + 1) != (len + 1))
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3902 ;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3903 else
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3904 #endif
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3905 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3906 range += len;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3907 if (range > 0)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3908 break;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3909
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3910 startpos -= len;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3911 }
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3912 }
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3913 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3914 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3915 return -1;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3916 } /* re_search_2 */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3917
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3918 /* Declarations and macros for re_match_2. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3919
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3920 static int bcmp_translate ();
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3921
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3922 /* This converts PTR, a pointer into one of the search strings `string1'
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3923 and `string2' into an offset from the beginning of that string. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3924 #define POINTER_TO_OFFSET(ptr) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3925 (FIRST_STRING_P (ptr) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3926 ? ((regoff_t) ((ptr) - string1)) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3927 : ((regoff_t) ((ptr) - string2 + size1)))
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3928
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3929 /* Call before fetching a character with *d. This switches over to
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3930 string2 if necessary. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3931 #define PREFETCH() \
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3932 while (d == dend) \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3933 { \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3934 /* End of string2 => fail. */ \
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3935 if (dend == end_match_2) \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3936 goto fail; \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3937 /* End of string1 => advance to string2. */ \
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3938 d = string2; \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3939 dend = end_match_2; \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3940 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3941
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3942
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3943 /* Test if at very beginning or at very end of the virtual concatenation
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3944 of `string1' and `string2'. If only one string, it's `string2'. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3945 #define AT_STRINGS_BEG(d) ((d) == (size1 ? string1 : string2) || !size2)
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
3946 #define AT_STRINGS_END(d) ((d) == end2)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3947
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3948
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3949 /* Test if D points to a character which is word-constituent. We have
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3950 two special cases to check for: if past the end of string1, look at
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3951 the first character in string2; and if before the beginning of
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3952 string2, look at the last character in string1. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3953 #define WORDCHAR_P(d) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3954 (SYNTAX ((d) == end1 ? *string2 \
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3955 : (d) == string2 - 1 ? *(end1 - 1) : *(d)) \
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3956 == Sword)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3957
521
7089c3a3a164 (AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents: 515
diff changeset
3958 /* Disabled due to a compiler bug -- see comment at case wordbound */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3959
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3960 /* The comment at case wordbound is following one, but we don't use
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3961 AT_WORD_BOUNDARY anymore to support multibyte form.
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3962
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3963 The DEC Alpha C compiler 3.x generates incorrect code for the
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3964 test WORDCHAR_P (d - 1) != WORDCHAR_P (d) in the expansion of
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
3965 AT_WORD_BOUNDARY, so this code is disabled. Expanding the
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3966 macro and introducing temporary variables works around the bug. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
3967
521
7089c3a3a164 (AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents: 515
diff changeset
3968 #if 0
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3969 /* Test if the character before D and the one at D differ with respect
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3970 to being word-constituent. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3971 #define AT_WORD_BOUNDARY(d) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3972 (AT_STRINGS_BEG (d) || AT_STRINGS_END (d) \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3973 || WORDCHAR_P (d - 1) != WORDCHAR_P (d))
521
7089c3a3a164 (AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents: 515
diff changeset
3974 #endif
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3975
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3976 /* Free everything we malloc. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3977 #ifdef MATCH_MAY_ALLOCATE
942
c6196b52ec1d Fix previous change.
Richard Stallman <rms@gnu.org>
parents: 941
diff changeset
3978 #define FREE_VAR(var) if (var) { REGEX_FREE (var); var = NULL; } else
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3979 #define FREE_VARIABLES() \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3980 do { \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3981 REGEX_FREE_STACK (fail_stack.stack); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3982 FREE_VAR (regstart); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3983 FREE_VAR (regend); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3984 FREE_VAR (best_regstart); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3985 FREE_VAR (best_regend); \
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3986 } while (0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3987 #else
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3988 #define FREE_VARIABLES() ((void)0) /* Do nothing! But inhibit gcc warning. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3989 #endif /* not MATCH_MAY_ALLOCATE */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
3990
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3991
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3992 /* Optimization routines. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
3993
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
3994 /* If the operation is a match against one or more chars,
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
3995 return a pointer to the next operation, else return NULL. */
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
3996 static unsigned char *
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
3997 skip_one_char (p)
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
3998 unsigned char *p;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
3999 {
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4000 switch (SWITCH_ENUM_CAST (*p++))
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4001 {
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4002 case anychar:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4003 break;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4004
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4005 case exactn:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4006 p += *p + 1;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4007 break;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4008
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4009 case charset_not:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4010 case charset:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4011 if (CHARSET_RANGE_TABLE_EXISTS_P (p - 1))
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4012 {
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4013 int mcnt;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4014 p = CHARSET_RANGE_TABLE (p - 1);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4015 EXTRACT_NUMBER_AND_INCR (mcnt, p);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4016 p = CHARSET_RANGE_TABLE_END (p, mcnt);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4017 }
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4018 else
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4019 p += 1 + CHARSET_BITMAP_SIZE (p - 1);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4020 break;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4021
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4022 case syntaxspec:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4023 case notsyntaxspec:
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
4024 #ifdef emacs
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4025 case categoryspec:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4026 case notcategoryspec:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4027 #endif /* emacs */
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4028 p++;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4029 break;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4030
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4031 default:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4032 p = NULL;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4033 }
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4034 return p;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4035 }
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4036
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4037
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4038 /* Jump over non-matching operations. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4039 static unsigned char *
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4040 skip_noops (p, pend)
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4041 unsigned char *p, *pend;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4042 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4043 int mcnt;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4044 while (p < pend)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4045 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4046 switch (SWITCH_ENUM_CAST ((re_opcode_t) *p))
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4047 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4048 case start_memory:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4049 case stop_memory:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4050 p += 2; break;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4051 case no_op:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4052 p += 1; break;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4053 case jump:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4054 p += 1;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4055 EXTRACT_NUMBER_AND_INCR (mcnt, p);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4056 p += mcnt;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4057 break;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4058 default:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4059 return p;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4060 }
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4061 }
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4062 assert (p == pend);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4063 return p;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4064 }
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4065
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4066 /* Non-zero if "p1 matches something" implies "p2 fails". */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4067 static int
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4068 mutually_exclusive_p (bufp, p1, p2)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4069 struct re_pattern_buffer *bufp;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4070 unsigned char *p1, *p2;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4071 {
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4072 re_opcode_t op2;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4073 const boolean multibyte = bufp->multibyte;
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4074 unsigned char *pend = bufp->buffer + bufp->used;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4075
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4076 assert (p1 >= bufp->buffer && p1 < pend
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4077 && p2 >= bufp->buffer && p2 <= pend);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4078
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4079 /* Skip over open/close-group commands.
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4080 If what follows this loop is a ...+ construct,
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4081 look at what begins its body, since we will have to
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4082 match at least one of that. */
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4083 p2 = skip_noops (p2, pend);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4084 /* The same skip can be done for p1, except that this function
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4085 is only used in the case where p1 is a simple match operator. */
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4086 /* p1 = skip_noops (p1, pend); */
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4087
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4088 assert (p1 >= bufp->buffer && p1 < pend
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4089 && p2 >= bufp->buffer && p2 <= pend);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4090
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4091 op2 = p2 == pend ? succeed : *p2;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4092
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4093 switch (SWITCH_ENUM_CAST (op2))
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4094 {
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4095 case succeed:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4096 case endbuf:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4097 /* If we're at the end of the pattern, we can change. */
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4098 if (skip_one_char (p1))
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4099 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4100 DEBUG_PRINT1 (" End of pattern: fast loop.\n");
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4101 return 1;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4102 }
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4103 break;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4104
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4105 case endline:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4106 if (!bufp->newline_anchor)
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4107 break;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4108 /* Fallthrough */
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4109 case exactn:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4110 {
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4111 register unsigned int c
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4112 = (re_opcode_t) *p2 == endline ? '\n'
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4113 : RE_STRING_CHAR(p2 + 2, pend - p2 - 2);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4114
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4115 if ((re_opcode_t) *p1 == exactn)
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4116 {
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4117 if (c != RE_STRING_CHAR (p1 + 2, pend - p1 - 2))
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4118 {
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4119 DEBUG_PRINT3 (" '%c' != '%c' => fast loop.\n", c, p1[2]);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4120 return 1;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4121 }
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4122 }
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4123
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4124 else if ((re_opcode_t) *p1 == charset
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4125 || (re_opcode_t) *p1 == charset_not)
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4126 {
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4127 int not = (re_opcode_t) *p1 == charset_not;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4128
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4129 /* Test if C is listed in charset (or charset_not)
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4130 at `p1'. */
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4131 if (SINGLE_BYTE_CHAR_P (c))
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4132 {
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4133 if (c < CHARSET_BITMAP_SIZE (p1) * BYTEWIDTH
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4134 && p1[2 + c / BYTEWIDTH] & (1 << (c % BYTEWIDTH)))
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4135 not = !not;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4136 }
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4137 else if (CHARSET_RANGE_TABLE_EXISTS_P (p1))
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4138 CHARSET_LOOKUP_RANGE_TABLE (not, c, p1);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4139
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4140 /* `not' is equal to 1 if c would match, which means
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4141 that we can't change to pop_failure_jump. */
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4142 if (!not)
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4143 {
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4144 DEBUG_PRINT1 (" No match => fast loop.\n");
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4145 return 1;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4146 }
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4147 }
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4148 else if ((re_opcode_t) *p1 == anychar
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4149 && c == '\n')
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4150 {
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4151 DEBUG_PRINT1 (" . != \\n => fast loop.\n");
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4152 return 1;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4153 }
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4154 }
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4155 break;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4156
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4157 case charset:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4158 case charset_not:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4159 {
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4160 if ((re_opcode_t) *p1 == exactn)
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4161 /* Reuse the code above. */
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4162 return mutually_exclusive_p (bufp, p2, p1);
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4163
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4164
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4165 /* It is hard to list up all the character in charset
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4166 P2 if it includes multibyte character. Give up in
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4167 such case. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4168 else if (!multibyte || !CHARSET_RANGE_TABLE_EXISTS_P (p2))
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4169 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4170 /* Now, we are sure that P2 has no range table.
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4171 So, for the size of bitmap in P2, `p2[1]' is
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4172 enough. But P1 may have range table, so the
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4173 size of bitmap table of P1 is extracted by
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4174 using macro `CHARSET_BITMAP_SIZE'.
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4175
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4176 Since we know that all the character listed in
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4177 P2 is ASCII, it is enough to test only bitmap
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4178 table of P1. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4179
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4180 if (*p1 == *p2)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4181 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4182 int idx;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4183 /* We win if the charset inside the loop
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4184 has no overlap with the one after the loop. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4185 for (idx = 0;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4186 (idx < (int) p2[1]
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4187 && idx < CHARSET_BITMAP_SIZE (p1));
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4188 idx++)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4189 if ((p2[2 + idx] & p1[2 + idx]) != 0)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4190 break;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4191
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4192 if (idx == p2[1]
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4193 || idx == CHARSET_BITMAP_SIZE (p1))
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4194 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4195 DEBUG_PRINT1 (" No match => fast loop.\n");
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4196 return 1;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4197 }
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4198 }
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4199 else if ((re_opcode_t) *p1 == charset
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4200 || (re_opcode_t) *p1 == charset_not)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4201 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4202 int idx;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4203 /* We win if the charset_not inside the loop lists
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4204 every character listed in the charset after. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4205 for (idx = 0; idx < (int) p2[1]; idx++)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4206 if (! (p2[2 + idx] == 0
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4207 || (idx < CHARSET_BITMAP_SIZE (p1)
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4208 && ((p2[2 + idx] & ~ p1[2 + idx]) == 0))))
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4209 break;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4210
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4211 if (idx == p2[1])
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4212 {
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4213 DEBUG_PRINT1 (" No match => fast loop.\n");
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4214 return 1;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4215 }
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4216 }
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4217 }
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4218 }
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4219
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4220 case wordend:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4221 case notsyntaxspec:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4222 return ((re_opcode_t) *p1 == syntaxspec
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4223 && p1[1] == (op2 == wordend ? Sword : p2[1]));
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4224
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4225 case wordbeg:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4226 case syntaxspec:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4227 return ((re_opcode_t) *p1 == notsyntaxspec
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4228 && p1[1] == (op2 == wordend ? Sword : p2[1]));
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4229
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4230 case wordbound:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4231 return (((re_opcode_t) *p1 == notsyntaxspec
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4232 || (re_opcode_t) *p1 == syntaxspec)
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4233 && p1[1] == Sword);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4234
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
4235 #ifdef emacs
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4236 case categoryspec:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4237 return ((re_opcode_t) *p1 == notcategoryspec && p1[1] == p2[1]);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4238 case notcategoryspec:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4239 return ((re_opcode_t) *p1 == categoryspec && p1[1] == p2[1]);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4240 #endif /* emacs */
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4241
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4242 default:
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
4243 ;
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4244 }
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4245
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4246 /* Safe default. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4247 return 0;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4248 }
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4249
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4250
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4251 /* Matching routines. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4252
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4253 #ifndef emacs /* Emacs never uses this. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4254 /* re_match is like re_match_2 except it takes only a single string. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4255
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4256 int
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4257 re_match (bufp, string, size, pos, regs)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4258 struct re_pattern_buffer *bufp;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4259 const char *string;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4260 int size, pos;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4261 struct re_registers *regs;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4262 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4263 int result = re_match_2_internal (bufp, NULL, 0, string, size,
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4264 pos, regs, size);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4265 alloca (0);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4266 return result;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4267 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4268 #endif /* not emacs */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4269
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4270 #ifdef emacs
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4271 /* In Emacs, this is the string or buffer in which we
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4272 are matching. It is used for looking up syntax properties. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4273 Lisp_Object re_match_object;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4274 #endif
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4275
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4276 /* re_match_2 matches the compiled pattern in BUFP against the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4277 the (virtual) concatenation of STRING1 and STRING2 (of length SIZE1
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4278 and SIZE2, respectively). We start matching at POS, and stop
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4279 matching at STOP.
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4280
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4281 If REGS is non-null and the `no_sub' field of BUFP is nonzero, we
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4282 store offsets for the substring each group matched in REGS. See the
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4283 documentation for exactly how many groups we fill.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4284
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4285 We return -1 if no match, -2 if an internal error (such as the
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4286 failure stack overflowing). Otherwise, we return the length of the
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4287 matched substring. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4288
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4289 int
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4290 re_match_2 (bufp, string1, size1, string2, size2, pos, regs, stop)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4291 struct re_pattern_buffer *bufp;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4292 const char *string1, *string2;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4293 int size1, size2;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4294 int pos;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4295 struct re_registers *regs;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4296 int stop;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4297 {
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4298 int result;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4299
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4300 #ifdef emacs
1321
a37088328c87 (re_match_2, re_search_2): Convert position to a charpos,
Karl Heuer <kwzh@gnu.org>
parents: 1313
diff changeset
4301 int charpos;
a37088328c87 (re_match_2, re_search_2): Convert position to a charpos,
Karl Heuer <kwzh@gnu.org>
parents: 1313
diff changeset
4302 gl_state.object = re_match_object;
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4303 charpos = SYNTAX_TABLE_BYTE_TO_CHAR (POS_AS_IN_BUFFER (pos));
1321
a37088328c87 (re_match_2, re_search_2): Convert position to a charpos,
Karl Heuer <kwzh@gnu.org>
parents: 1313
diff changeset
4304 SETUP_SYNTAX_TABLE_FOR_OBJECT (re_match_object, charpos, 1);
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4305 #endif
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4306
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4307 result = re_match_2_internal (bufp, string1, size1, string2, size2,
1321
a37088328c87 (re_match_2, re_search_2): Convert position to a charpos,
Karl Heuer <kwzh@gnu.org>
parents: 1313
diff changeset
4308 pos, regs, stop);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4309 alloca (0);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4310 return result;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4311 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4312
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4313 /* This is a separate function so that we can force an alloca cleanup
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4314 afterwards. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4315 static int
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4316 re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4317 struct re_pattern_buffer *bufp;
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
4318 re_char *string1, *string2;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4319 int size1, size2;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4320 int pos;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4321 struct re_registers *regs;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4322 int stop;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4323 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4324 /* General temporaries. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4325 int mcnt;
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
4326 boolean not;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4327 unsigned char *p1;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4328
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4329 /* Just past the end of the corresponding string. */
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
4330 re_char *end1, *end2;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4331
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4332 /* Pointers into string1 and string2, just past the last characters in
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4333 each to consider matching. */
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
4334 re_char *end_match_1, *end_match_2;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4335
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4336 /* Where we are in the data, and the end of the current string. */
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
4337 re_char *d, *dend;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4338
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4339 /* Used sometimes to remember where we were before starting matching
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4340 an operator so that we can go back in case of failure. This "atomic"
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4341 behavior of matching opcodes is indispensable to the correctness
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4342 of the on_failure_keep_string_jump optimization. */
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4343 re_char *dfail;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4344
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4345 /* Where we are in the pattern, and the end of the pattern. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4346 unsigned char *p = bufp->buffer;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4347 register unsigned char *pend = p + bufp->used;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4348
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4349 /* We use this to map every character in the string. */
501
f29b13c2cefd (TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents: 490
diff changeset
4350 RE_TRANSLATE_TYPE translate = bufp->translate;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4351
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4352 /* Nonzero if we have to concern multibyte character. */
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
4353 const boolean multibyte = bufp->multibyte;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4354
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4355 /* Failure point stack. Each place that can handle a failure further
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4356 down the line pushes a failure point on this stack. It consists of
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4357 regstart, and regend for all registers corresponding to
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4358 the subexpressions we're currently inside, plus the number of such
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4359 registers, and, finally, two char *'s. The first char * is where
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4360 to resume scanning the pattern; the second one is where to resume
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4361 scanning the strings. */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4362 #ifdef MATCH_MAY_ALLOCATE /* otherwise, this is global. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4363 fail_stack_type fail_stack;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4364 #endif
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4365 #ifdef DEBUG
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4366 static unsigned failure_id = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4367 unsigned nfailure_points_pushed = 0, nfailure_points_popped = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4368 #endif
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4369
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4370 #if defined (REL_ALLOC) && defined (REGEX_MALLOC)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4371 /* This holds the pointer to the failure stack, when
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4372 it is allocated relocatably. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4373 fail_stack_elt_t *failure_stack_ptr;
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4374 #endif
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4375
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4376 /* We fill all the registers internally, independent of what we
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4377 return, for use in backreferences. The number here includes
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4378 an element for register zero. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4379 unsigned num_regs = bufp->re_nsub + 1;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4380
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4381 /* Information on the contents of registers. These are pointers into
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4382 the input strings; they record just what was matched (on this
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4383 attempt) by a subexpression part of the pattern, that is, the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4384 regnum-th regstart pointer points to where in the pattern we began
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4385 matching and the regnum-th regend points to right after where we
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4386 stopped matching the regnum-th subexpression. (The zeroth register
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4387 keeps track of what the whole pattern matches.) */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4388 #ifdef MATCH_MAY_ALLOCATE /* otherwise, these are global. */
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
4389 re_char **regstart, **regend;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4390 #endif
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4391
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4392 /* The following record the register info as found in the above
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4393 variables when we find a match better than any we've seen before.
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4394 This happens as we backtrack through the failure points, which in
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4395 turn happens only if we have not yet matched the entire string. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4396 unsigned best_regs_set = false;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4397 #ifdef MATCH_MAY_ALLOCATE /* otherwise, these are global. */
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
4398 re_char **best_regstart, **best_regend;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4399 #endif
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4400
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4401 /* Logically, this is `best_regend[0]'. But we don't want to have to
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4402 allocate space for that if we're not allocating space for anything
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4403 else (see below). Also, we never need info about register 0 for
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4404 any of the other register vectors, and it seems rather a kludge to
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4405 treat `best_regend' differently than the rest. So we keep track of
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4406 the end of the best match so far in a separate variable. We
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4407 initialize this to NULL so that when we backtrack the first time
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4408 and need to test it, it's not garbage. */
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
4409 re_char *match_end = NULL;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4410
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4411 #ifdef DEBUG
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4412 /* Counts the total number of registers pushed. */
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4413 unsigned num_regs_pushed = 0;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4414 #endif
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4415
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4416 DEBUG_PRINT1 ("\n\nEntering re_match_2.\n");
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4417
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4418 INIT_FAIL_STACK ();
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4419
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4420 #ifdef MATCH_MAY_ALLOCATE
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4421 /* Do not bother to initialize all the register variables if there are
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4422 no groups in the pattern, as it takes a fair amount of time. If
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4423 there are groups, we include space for register 0 (the whole
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4424 pattern), even though we never use it, since it simplifies the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4425 array indexing. We should fix this. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4426 if (bufp->re_nsub)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4427 {
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
4428 regstart = REGEX_TALLOC (num_regs, re_char *);
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
4429 regend = REGEX_TALLOC (num_regs, re_char *);
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
4430 best_regstart = REGEX_TALLOC (num_regs, re_char *);
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
4431 best_regend = REGEX_TALLOC (num_regs, re_char *);
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4432
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4433 if (!(regstart && regend && best_regstart && best_regend))
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4434 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4435 FREE_VARIABLES ();
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4436 return -2;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4437 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4438 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4439 else
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4440 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4441 /* We must initialize all our variables to NULL, so that
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4442 `FREE_VARIABLES' doesn't try to free them. */
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4443 regstart = regend = best_regstart = best_regend = NULL;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4444 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4445 #endif /* MATCH_MAY_ALLOCATE */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4446
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4447 /* The starting position is bogus. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4448 if (pos < 0 || pos > size1 + size2)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4449 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4450 FREE_VARIABLES ();
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4451 return -1;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4452 }
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4453
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4454 /* Initialize subexpression text positions to -1 to mark ones that no
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4455 start_memory/stop_memory has been seen for. Also initialize the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4456 register information struct. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4457 for (mcnt = 1; mcnt < num_regs; mcnt++)
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4458 regstart[mcnt] = regend[mcnt] = REG_UNSET_VALUE;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4459
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4460 /* Shorten strings to `stop'. */
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4461 if (stop <= size1)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4462 {
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4463 size1 = stop;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4464 size2 = 0;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4465 }
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4466 else if (stop <= size1 + size2)
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4467 size2 = stop - size1;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4468
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4469 /* We move `string1' into `string2' if the latter's empty -- but not if
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4470 `string1' is null. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4471 if (size2 == 0 && string1 != NULL)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4472 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4473 string2 = string1;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4474 size2 = size1;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4475 string1 = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4476 size1 = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4477 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4478 end1 = string1 + size1;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4479 end2 = string2 + size2;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4480
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4481 /* Compute where to stop matching, within the two strings. */
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4482 end_match_1 = end1;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4483 end_match_2 = end2;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4484
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4485 /* `p' scans through the pattern as `d' scans through the data.
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4486 `dend' is the end of the input string that `d' points within. `d'
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4487 is advanced into the following input string whenever necessary, but
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4488 this happens before fetching; therefore, at the beginning of the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4489 loop, `d' can be pointing at the end of a string, but it cannot
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4490 equal `string2'. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4491 if (size1 > 0 && pos <= size1)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4492 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4493 d = string1 + pos;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4494 dend = end_match_1;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4495 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4496 else
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4497 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4498 d = string2 + pos - size1;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4499 dend = end_match_2;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4500 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4501
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4502 DEBUG_PRINT1 ("The compiled pattern is: ");
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4503 DEBUG_PRINT_COMPILED_PATTERN (bufp, p, pend);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4504 DEBUG_PRINT1 ("The string to match is: `");
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4505 DEBUG_PRINT_DOUBLE_STRING (d, string1, size1, string2, size2);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4506 DEBUG_PRINT1 ("'\n");
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4507
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4508 /* This loops over pattern commands. It exits by returning from the
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4509 function if the match is complete, or it drops through if the match
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4510 fails at this starting point in the input data. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4511 for (;;)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4512 {
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4513 DEBUG_PRINT2 ("\n%p: ", p);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4514
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4515 if (p == pend)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4516 { /* End of pattern means we might have succeeded. */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4517 DEBUG_PRINT1 ("end of pattern ... ");
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4518
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4519 /* If we haven't matched the entire string, and we want the
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4520 longest match, try backtracking. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4521 if (d != end_match_2)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4522 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4523 /* 1 if this match ends in the same string (string1 or string2)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4524 as the best previous match. */
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4525 boolean same_str_p = (FIRST_STRING_P (match_end)
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4526 == FIRST_STRING_P (d));
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4527 /* 1 if this match is the best seen so far. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4528 boolean best_match_p;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4529
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4530 /* AIX compiler got confused when this was combined
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4531 with the previous declaration. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4532 if (same_str_p)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4533 best_match_p = d > match_end;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4534 else
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4535 best_match_p = !FIRST_STRING_P (d);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4536
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4537 DEBUG_PRINT1 ("backtracking.\n");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4538
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4539 if (!FAIL_STACK_EMPTY ())
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4540 { /* More failure points to try. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4541
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4542 /* If exceeds best match so far, save it. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4543 if (!best_regs_set || best_match_p)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4544 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4545 best_regs_set = true;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4546 match_end = d;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4547
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4548 DEBUG_PRINT1 ("\nSAVING match as best so far.\n");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4549
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4550 for (mcnt = 1; mcnt < num_regs; mcnt++)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4551 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4552 best_regstart[mcnt] = regstart[mcnt];
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4553 best_regend[mcnt] = regend[mcnt];
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4554 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4555 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4556 goto fail;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4557 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4558
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4559 /* If no failure points, don't restore garbage. And if
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4560 last match is real best match, don't restore second
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4561 best one. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4562 else if (best_regs_set && !best_match_p)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4563 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4564 restore_best_regs:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4565 /* Restore best match. It may happen that `dend ==
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4566 end_match_1' while the restored d is in string2.
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4567 For example, the pattern `x.*y.*z' against the
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4568 strings `x-' and `y-z-', if the two strings are
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4569 not consecutive in memory. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4570 DEBUG_PRINT1 ("Restoring best registers.\n");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4571
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4572 d = match_end;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4573 dend = ((d >= string1 && d <= end1)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4574 ? end_match_1 : end_match_2);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4575
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4576 for (mcnt = 1; mcnt < num_regs; mcnt++)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4577 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4578 regstart[mcnt] = best_regstart[mcnt];
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4579 regend[mcnt] = best_regend[mcnt];
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4580 }
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4581 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4582 } /* d != end_match_2 */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4583
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4584 succeed_label:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4585 DEBUG_PRINT1 ("Accepting match.\n");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4586
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4587 /* If caller wants register contents data back, do it. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4588 if (regs && !bufp->no_sub)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4589 {
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4590 /* Have the register data arrays been allocated? */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4591 if (bufp->regs_allocated == REGS_UNALLOCATED)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4592 { /* No. So allocate them with malloc. We need one
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4593 extra element beyond `num_regs' for the `-1' marker
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4594 GNU code uses. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4595 regs->num_regs = MAX (RE_NREGS, num_regs + 1);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4596 regs->start = TALLOC (regs->num_regs, regoff_t);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4597 regs->end = TALLOC (regs->num_regs, regoff_t);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4598 if (regs->start == NULL || regs->end == NULL)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4599 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4600 FREE_VARIABLES ();
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4601 return -2;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4602 }
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4603 bufp->regs_allocated = REGS_REALLOCATE;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4604 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4605 else if (bufp->regs_allocated == REGS_REALLOCATE)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4606 { /* Yes. If we need more elements than were already
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4607 allocated, reallocate them. If we need fewer, just
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4608 leave it alone. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4609 if (regs->num_regs < num_regs + 1)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4610 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4611 regs->num_regs = num_regs + 1;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4612 RETALLOC (regs->start, regs->num_regs, regoff_t);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4613 RETALLOC (regs->end, regs->num_regs, regoff_t);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4614 if (regs->start == NULL || regs->end == NULL)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4615 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4616 FREE_VARIABLES ();
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4617 return -2;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4618 }
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4619 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4620 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4621 else
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4622 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4623 /* These braces fend off a "empty body in an else-statement"
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4624 warning under GCC when assert expands to nothing. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4625 assert (bufp->regs_allocated == REGS_FIXED);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4626 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4627
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4628 /* Convert the pointer data in `regstart' and `regend' to
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4629 indices. Register zero has to be set differently,
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4630 since we haven't kept track of any info for it. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4631 if (regs->num_regs > 0)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4632 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4633 regs->start[0] = pos;
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4634 regs->end[0] = POINTER_TO_OFFSET (d);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4635 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4636
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4637 /* Go through the first `min (num_regs, regs->num_regs)'
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4638 registers, since that is all we initialized. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4639 for (mcnt = 1; mcnt < MIN (num_regs, regs->num_regs); mcnt++)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4640 {
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4641 if (REG_UNSET (regstart[mcnt]) || REG_UNSET (regend[mcnt]))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4642 regs->start[mcnt] = regs->end[mcnt] = -1;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4643 else
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4644 {
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4645 regs->start[mcnt]
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4646 = (regoff_t) POINTER_TO_OFFSET (regstart[mcnt]);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4647 regs->end[mcnt]
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4648 = (regoff_t) POINTER_TO_OFFSET (regend[mcnt]);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4649 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4650 }
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4651
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4652 /* If the regs structure we return has more elements than
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4653 were in the pattern, set the extra elements to -1. If
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4654 we (re)allocated the registers, this is the case,
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4655 because we always allocate enough to have at least one
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4656 -1 at the end. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4657 for (mcnt = num_regs; mcnt < regs->num_regs; mcnt++)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4658 regs->start[mcnt] = regs->end[mcnt] = -1;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4659 } /* regs && !bufp->no_sub */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4660
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4661 DEBUG_PRINT4 ("%u failure points pushed, %u popped (%u remain).\n",
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4662 nfailure_points_pushed, nfailure_points_popped,
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4663 nfailure_points_pushed - nfailure_points_popped);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4664 DEBUG_PRINT2 ("%u registers pushed.\n", num_regs_pushed);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4665
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4666 mcnt = POINTER_TO_OFFSET (d) - pos;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4667
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4668 DEBUG_PRINT2 ("Returning %d from re_match_2.\n", mcnt);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4669
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4670 FREE_VARIABLES ();
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4671 return mcnt;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4672 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4673
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4674 /* Otherwise match next pattern command. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4675 switch (SWITCH_ENUM_CAST ((re_opcode_t) *p++))
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4676 {
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4677 /* Ignore these. Used to ignore the n of succeed_n's which
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4678 currently have n == 0. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4679 case no_op:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4680 DEBUG_PRINT1 ("EXECUTING no_op.\n");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4681 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4682
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4683 case succeed:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4684 DEBUG_PRINT1 ("EXECUTING succeed.\n");
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4685 goto succeed_label;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4686
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4687 /* Match the next n pattern characters exactly. The following
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4688 byte in the pattern defines n, and the n bytes after that
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4689 are the characters to match. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4690 case exactn:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4691 mcnt = *p++;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4692 DEBUG_PRINT2 ("EXECUTING exactn %d.\n", mcnt);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4693
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4694 /* Remember the start point to rollback upon failure. */
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4695 dfail = d;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4696
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4697 /* This is written out as an if-else so we don't waste time
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4698 testing `translate' inside the loop. */
1328
0aa10b723959 Use RE_TRANSLATE_P to check whether translation is
Andreas Schwab <schwab@suse.de>
parents: 1326
diff changeset
4699 if (RE_TRANSLATE_P (translate))
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4700 {
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4701 #ifdef emacs
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4702 if (multibyte)
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4703 do
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4704 {
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4705 int pat_charlen, buf_charlen;
1312
a9a56c9deb21 (re_match_2_internal): Declare buf_ch unsigned int.
Richard Stallman <rms@gnu.org>
parents: 1297
diff changeset
4706 unsigned int pat_ch, buf_ch;
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4707
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4708 PREFETCH ();
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4709 pat_ch = STRING_CHAR_AND_LENGTH (p, pend - p, pat_charlen);
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4710 buf_ch = STRING_CHAR_AND_LENGTH (d, dend - d, buf_charlen);
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4711
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4712 if (RE_TRANSLATE (translate, buf_ch)
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4713 != pat_ch)
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4714 {
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4715 d = dfail;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4716 goto fail;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4717 }
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4718
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4719 p += pat_charlen;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4720 d += buf_charlen;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4721 mcnt -= pat_charlen;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4722 }
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4723 while (mcnt > 0);
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4724 else
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4725 #endif /* not emacs */
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4726 do
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4727 {
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4728 PREFETCH ();
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
4729 if (RE_TRANSLATE (translate, *d) != *p++)
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4730 {
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4731 d = dfail;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4732 goto fail;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4733 }
1381
24423cbaf6a9 (re_search_2): Don't use ++ inside RE_TRANSLATE.
Richard Stallman <rms@gnu.org>
parents: 1342
diff changeset
4734 d++;
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4735 }
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4736 while (--mcnt);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4737 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4738 else
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4739 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4740 do
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4741 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4742 PREFETCH ();
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4743 if (*d++ != *p++)
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4744 {
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4745 d = dfail;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4746 goto fail;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4747 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4748 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4749 while (--mcnt);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4750 }
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4751 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4752
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4753
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4754 /* Match any character except possibly a newline or a null. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4755 case anychar:
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4756 {
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4757 int buf_charlen;
1312
a9a56c9deb21 (re_match_2_internal): Declare buf_ch unsigned int.
Richard Stallman <rms@gnu.org>
parents: 1297
diff changeset
4758 unsigned int buf_ch;
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4759
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4760 DEBUG_PRINT1 ("EXECUTING anychar.\n");
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4761
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4762 PREFETCH ();
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4763
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4764 #ifdef emacs
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4765 if (multibyte)
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4766 buf_ch = STRING_CHAR_AND_LENGTH (d, dend - d, buf_charlen);
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4767 else
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4768 #endif /* not emacs */
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4769 {
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
4770 buf_ch = *d;
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4771 buf_charlen = 1;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4772 }
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4773
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4774 buf_ch = TRANSLATE (buf_ch);
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4775
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4776 if ((!(bufp->syntax & RE_DOT_NEWLINE)
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4777 && buf_ch == '\n')
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4778 || ((bufp->syntax & RE_DOT_NOT_NULL)
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4779 && buf_ch == '\000'))
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4780 goto fail;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4781
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4782 DEBUG_PRINT2 (" Matched `%d'.\n", *d);
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4783 d += buf_charlen;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
4784 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4785 break;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4786
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4787
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4788 case charset:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4789 case charset_not:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4790 {
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4791 register unsigned int c;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4792 boolean not = (re_opcode_t) *(p - 1) == charset_not;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4793 int len;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4794
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4795 /* Start of actual range_table, or end of bitmap if there is no
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4796 range table. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4797 unsigned char *range_table;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4798
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4799 /* Nonzero if there is a range table. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4800 int range_table_exists;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4801
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4802 /* Number of ranges of range table. This is not included
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4803 in the initial byte-length of the command. */
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4804 int count = 0;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4805
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4806 DEBUG_PRINT2 ("EXECUTING charset%s.\n", not ? "_not" : "");
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4807
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4808 PREFETCH ();
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
4809 c = *d;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4810
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4811 range_table_exists = CHARSET_RANGE_TABLE_EXISTS_P (&p[-1]);
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4812
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4813 #ifdef emacs
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4814 if (range_table_exists)
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4815 {
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4816 range_table = CHARSET_RANGE_TABLE (&p[-1]); /* Past the bitmap. */
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4817 EXTRACT_NUMBER_AND_INCR (count, range_table);
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4818 }
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4819
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4820 if (multibyte && BASE_LEADING_CODE_P (c))
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4821 c = STRING_CHAR_AND_LENGTH (d, dend - d, len);
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4822 #endif /* emacs */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4823
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4824 if (SINGLE_BYTE_CHAR_P (c))
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4825 { /* Lookup bitmap. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4826 c = TRANSLATE (c); /* The character to match. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4827 len = 1;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4828
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4829 /* Cast to `unsigned' instead of `unsigned char' in
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4830 case the bit list is a full 32 bytes long. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4831 if (c < (unsigned) (CHARSET_BITMAP_SIZE (&p[-1]) * BYTEWIDTH)
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4832 && p[1 + c / BYTEWIDTH] & (1 << (c % BYTEWIDTH)))
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4833 not = !not;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4834 }
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4835 #ifdef emacs
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4836 else if (range_table_exists)
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4837 {
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4838 int class_bits = CHARSET_RANGE_TABLE_BITS (&p[-1]);
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4839
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4840 if ( (class_bits & BIT_ALNUM && ISALNUM (c))
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4841 | (class_bits & BIT_ALPHA && ISALPHA (c))
1965
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
4842 | (class_bits & BIT_ASCII && IS_REAL_ASCII (c))
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4843 | (class_bits & BIT_GRAPH && ISGRAPH (c))
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4844 | (class_bits & BIT_LOWER && ISLOWER (c))
1965
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
4845 | (class_bits & BIT_MULTIBYTE && !ISUNIBYTE (c))
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
4846 | (class_bits & BIT_NONASCII && !IS_REAL_ASCII (c))
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4847 | (class_bits & BIT_PRINT && ISPRINT (c))
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4848 | (class_bits & BIT_PUNCT && ISPUNCT (c))
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4849 | (class_bits & BIT_SPACE && ISSPACE (c))
1965
058a9ce57dd7 1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents: 1933
diff changeset
4850 | (class_bits & BIT_UNIBYTE && ISUNIBYTE (c))
1933
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4851 | (class_bits & BIT_UPPER && ISUPPER (c))
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4852 | (class_bits & BIT_WORD && ISWORD (c)))
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4853 not = !not;
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4854 else
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4855 CHARSET_LOOKUP_RANGE_TABLE_RAW (not, c, range_table, count);
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4856 }
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4857 #endif /* emacs */
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4858
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4859 if (range_table_exists)
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4860 p = CHARSET_RANGE_TABLE_END (range_table, count);
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4861 else
5ffa81ab1988 [emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents: 1660
diff changeset
4862 p += CHARSET_BITMAP_SIZE (&p[-1]) + 1;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4863
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4864 if (!not) goto fail;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4865
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
4866 d += len;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4867 break;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4868 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4869
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4870
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4871 /* The beginning of a group is represented by start_memory.
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4872 The argument is the register number. The text
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4873 matched within the group is recorded (in the internal
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4874 registers data structure) under the register number. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4875 case start_memory:
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4876 DEBUG_PRINT2 ("EXECUTING start_memory %d:\n", *p);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4877
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4878 /* In case we need to undo this operation (via backtracking). */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4879 PUSH_FAILURE_REG ((unsigned int)*p);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4880
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4881 regstart[*p] = d;
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4882 regend[*p] = REG_UNSET_VALUE; /* probably unnecessary. -sm */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4883 DEBUG_PRINT2 (" regstart: %d\n", POINTER_TO_OFFSET (regstart[*p]));
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4884
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4885 /* Move past the register number and inner group count. */
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4886 p += 1;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4887 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4888
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4889
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4890 /* The stop_memory opcode represents the end of a group. Its
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4891 argument is the same as start_memory's: the register number. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4892 case stop_memory:
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4893 DEBUG_PRINT2 ("EXECUTING stop_memory %d:\n", *p);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4894
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4895 assert (!REG_UNSET (regstart[*p]));
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4896 /* Strictly speaking, there should be code such as:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4897
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4898 assert (REG_UNSET (regend[*p]));
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4899 PUSH_FAILURE_REGSTOP ((unsigned int)*p);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4900
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4901 But the only info to be pushed is regend[*p] and it is known to
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4902 be UNSET, so there really isn't anything to push.
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4903 Not pushing anything, on the other hand deprives us from the
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4904 guarantee that regend[*p] is UNSET since undoing this operation
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4905 will not reset its value properly. This is not important since
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4906 the value will only be read on the next start_memory or at
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4907 the very end and both events can only happen if this stop_memory
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4908 is *not* undone. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4909
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4910 regend[*p] = d;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4911 DEBUG_PRINT2 (" regend: %d\n", POINTER_TO_OFFSET (regend[*p]));
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4912
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4913 /* Move past the register number and the inner group count. */
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
4914 p += 1;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4915 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4916
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4917
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4918 /* \<digit> has been turned into a `duplicate' command which is
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4919 followed by the numeric value of <digit> as the register number. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4920 case duplicate:
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4921 {
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
4922 register re_char *d2, *dend2;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4923 int regno = *p++; /* Get which register to match against. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4924 DEBUG_PRINT2 ("EXECUTING duplicate %d.\n", regno);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4925
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4926 /* Can't back reference a group which we've never matched. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4927 if (REG_UNSET (regstart[regno]) || REG_UNSET (regend[regno]))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4928 goto fail;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4929
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4930 /* Where in input to try to start matching. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4931 d2 = regstart[regno];
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4932
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4933 /* Remember the start point to rollback upon failure. */
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4934 dfail = d;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4935
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4936 /* Where to stop matching; if both the place to start and
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4937 the place to stop matching are in the same string, then
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4938 set to the place to stop, otherwise, for now have to use
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4939 the end of the first string. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4940
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4941 dend2 = ((FIRST_STRING_P (regstart[regno])
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4942 == FIRST_STRING_P (regend[regno]))
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4943 ? regend[regno] : end_match_1);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4944 for (;;)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4945 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4946 /* If necessary, advance to next segment in register
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4947 contents. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4948 while (d2 == dend2)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4949 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4950 if (dend2 == end_match_2) break;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4951 if (dend2 == regend[regno]) break;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4952
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4953 /* End of string1 => advance to string2. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4954 d2 = string2;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4955 dend2 = regend[regno];
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4956 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4957 /* At end of register contents => success */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4958 if (d2 == dend2) break;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4959
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4960 /* If necessary, advance to next segment in data. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4961 PREFETCH ();
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4962
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4963 /* How many characters left in this segment to match. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4964 mcnt = dend - d;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4965
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4966 /* Want how many consecutive characters we can match in
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4967 one shot, so, if necessary, adjust the count. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4968 if (mcnt > dend2 - d2)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4969 mcnt = dend2 - d2;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
4970
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4971 /* Compare that many; failure if mismatch, else move
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4972 past them. */
1328
0aa10b723959 Use RE_TRANSLATE_P to check whether translation is
Andreas Schwab <schwab@suse.de>
parents: 1326
diff changeset
4973 if (RE_TRANSLATE_P (translate)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4974 ? bcmp_translate (d, d2, mcnt, translate)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4975 : bcmp (d, d2, mcnt))
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4976 {
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4977 d = dfail;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4978 goto fail;
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
4979 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4980 d += mcnt, d2 += mcnt;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4981 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4982 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4983 break;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4984
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4985
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4986 /* begline matches the empty string at the beginning of the string
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4987 (unless `not_bol' is set in `bufp'), and, if
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4988 `newline_anchor' is set, after newlines. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
4989 case begline:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4990 DEBUG_PRINT1 ("EXECUTING begline.\n");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4991
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4992 if (AT_STRINGS_BEG (d))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4993 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4994 if (!bufp->not_bol) break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4995 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4996 else if (d[-1] == '\n' && bufp->newline_anchor)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4997 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4998 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
4999 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5000 /* In all other cases, we fail. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5001 goto fail;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5002
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5003
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5004 /* endline is the dual of begline. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5005 case endline:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5006 DEBUG_PRINT1 ("EXECUTING endline.\n");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5007
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5008 if (AT_STRINGS_END (d))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5009 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5010 if (!bufp->not_eol) break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5011 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5012
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5013 /* We have to ``prefetch'' the next character. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5014 else if ((d == end1 ? *string2 : *d) == '\n'
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5015 && bufp->newline_anchor)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5016 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5017 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5018 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5019 goto fail;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5020
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5021
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5022 /* Match at the very beginning of the data. */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5023 case begbuf:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5024 DEBUG_PRINT1 ("EXECUTING begbuf.\n");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5025 if (AT_STRINGS_BEG (d))
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5026 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5027 goto fail;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5028
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5029
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5030 /* Match at the very end of the data. */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5031 case endbuf:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5032 DEBUG_PRINT1 ("EXECUTING endbuf.\n");
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5033 if (AT_STRINGS_END (d))
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5034 break;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5035 goto fail;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5036
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5037
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5038 /* on_failure_keep_string_jump is used to optimize `.*\n'. It
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5039 pushes NULL as the value for the string on the stack. Then
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5040 `POP_FAILURE_POINT' will keep the current value for the
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5041 string, instead of restoring it. To see why, consider
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5042 matching `foo\nbar' against `.*\n'. The .* matches the foo;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5043 then the . fails against the \n. But the next thing we want
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5044 to do is match the \n against the \n; if we restored the
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5045 string value, we would be back at the foo.
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5046
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5047 Because this is used only in specific cases, we don't need to
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5048 check all the things that `on_failure_jump' does, to make
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5049 sure the right things get saved on the stack. Hence we don't
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5050 share its code. The only reason to push anything on the
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5051 stack at all is that otherwise we would have to change
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5052 `anychar's code to do something besides goto fail in this
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5053 case; that seems worse than this. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5054 case on_failure_keep_string_jump:
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5055 EXTRACT_NUMBER_AND_INCR (mcnt, p);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5056 DEBUG_PRINT3 ("EXECUTING on_failure_keep_string_jump %d (to %p):\n",
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5057 mcnt, p + mcnt);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5058
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5059 PUSH_FAILURE_POINT (p - 3, NULL);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5060 break;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5061
2370
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5062 /* A nasty loop is introduced by the non-greedy *? and +?.
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5063 With such loops, the stack only ever contains one failure point
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5064 at a time, so that a plain on_failure_jump_loop kind of
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5065 cycle detection cannot work. Worse yet, such a detection
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5066 can not only fail to detect a cycle, but it can also wrongly
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5067 detect a cycle (between different instantiations of the same
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5068 loop.
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5069 So the method used for those nasty loops is a little different:
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5070 We use a special cycle-detection-stack-frame which is pushed
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5071 when the on_failure_jump_nastyloop failure-point is *popped*.
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5072 This special frame thus marks the beginning of one iteration
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5073 through the loop and we can hence easily check right here
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5074 whether something matched between the beginning and the end of
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5075 the loop. */
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5076 case on_failure_jump_nastyloop:
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5077 EXTRACT_NUMBER_AND_INCR (mcnt, p);
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5078 DEBUG_PRINT3 ("EXECUTING on_failure_jump_nastyloop %d (to %p):\n",
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5079 mcnt, p + mcnt);
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5080
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5081 assert ((re_opcode_t)p[-4] == no_op);
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5082 CHECK_INFINITE_LOOP (p - 4, d);
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5083 PUSH_FAILURE_POINT (p - 3, d);
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5084 break;
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5085
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
5086
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
5087 /* Simple loop detecting on_failure_jump: just check on the
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
5088 failure stack if the same spot was already hit earlier. */
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5089 case on_failure_jump_loop:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5090 on_failure:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5091 EXTRACT_NUMBER_AND_INCR (mcnt, p);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5092 DEBUG_PRINT3 ("EXECUTING on_failure_jump_loop %d (to %p):\n",
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5093 mcnt, p + mcnt);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5094
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5095 CHECK_INFINITE_LOOP (p - 3, d);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5096 PUSH_FAILURE_POINT (p - 3, d);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5097 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5098
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5099
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5100 /* Uses of on_failure_jump:
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5101
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5102 Each alternative starts with an on_failure_jump that points
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5103 to the beginning of the next alternative. Each alternative
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5104 except the last ends with a jump that in effect jumps past
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5105 the rest of the alternatives. (They really jump to the
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5106 ending jump of the following alternative, because tensioning
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5107 these jumps is a hassle.)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5108
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5109 Repeats start with an on_failure_jump that points past both
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5110 the repetition text and either the following jump or
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5111 pop_failure_jump back to this on_failure_jump. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5112 case on_failure_jump:
1660
ef1f39a7e7c3 (re_match_2_internal) [WINDOWSNT & emacs]: Insert QUIT at various places.
Richard Stallman <rms@gnu.org>
parents: 1583
diff changeset
5113 QUIT;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5114 EXTRACT_NUMBER_AND_INCR (mcnt, p);
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5115 DEBUG_PRINT3 ("EXECUTING on_failure_jump %d (to %p):\n",
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5116 mcnt, p + mcnt);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5117
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5118 PUSH_FAILURE_POINT (p -3, d);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5119 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5120
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
5121 /* This operation is used for greedy *.
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5122 Compare the beginning of the repeat with what in the
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5123 pattern follows its end. If we can establish that there
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5124 is nothing that they would both match, i.e., that we
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5125 would have to backtrack because of (as in, e.g., `a*a')
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5126 then we can use a non-backtracking loop based on
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
5127 on_failure_keep_string_jump instead of on_failure_jump. */
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5128 case on_failure_jump_smart:
1660
ef1f39a7e7c3 (re_match_2_internal) [WINDOWSNT & emacs]: Insert QUIT at various places.
Richard Stallman <rms@gnu.org>
parents: 1583
diff changeset
5129 QUIT;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5130 EXTRACT_NUMBER_AND_INCR (mcnt, p);
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5131 DEBUG_PRINT3 ("EXECUTING on_failure_jump_smart %d (to %p).\n",
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5132 mcnt, p + mcnt);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5133 {
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5134 unsigned char *p1 = p; /* Next operation. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5135 unsigned char *p2 = p + mcnt; /* Destination of the jump. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5136
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5137 p -= 3; /* Reset so that we will re-execute the
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5138 instruction once it's been changed. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5139
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
5140 EXTRACT_NUMBER (mcnt, p2 - 2);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
5141
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
5142 /* Ensure this is a indeed the trivial kind of loop
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
5143 we are expecting. */
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
5144 assert (skip_one_char (p1) == p2 - 3);
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
5145 assert ((re_opcode_t) p2[-3] == jump && p2 + mcnt == p);
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
5146 DEBUG_STATEMENT (debug += 2);
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5147 if (mutually_exclusive_p (bufp, p1, p2))
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5148 {
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5149 /* Use a fast `on_failure_keep_string_jump' loop. */
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
5150 DEBUG_PRINT1 (" smart exclusive => fast loop.\n");
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
5151 *p = (unsigned char) on_failure_keep_string_jump;
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
5152 STORE_NUMBER (p2 - 2, mcnt + 3);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5153 }
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5154 else
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5155 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5156 /* Default to a safe `on_failure_jump' loop. */
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5157 DEBUG_PRINT1 (" smart default => slow loop.\n");
2355
0786b40fdf1c (RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2350
diff changeset
5158 *p = (unsigned char) on_failure_jump;
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5159 }
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
5160 DEBUG_STATEMENT (debug -= 2);
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5161 }
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5162 break;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5163
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5164 /* Unconditionally jump (without popping any failure points). */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5165 case jump:
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5166 unconditional_jump:
1660
ef1f39a7e7c3 (re_match_2_internal) [WINDOWSNT & emacs]: Insert QUIT at various places.
Richard Stallman <rms@gnu.org>
parents: 1583
diff changeset
5167 QUIT;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5168 EXTRACT_NUMBER_AND_INCR (mcnt, p); /* Get the amount to jump. */
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5169 DEBUG_PRINT2 ("EXECUTING jump %d ", mcnt);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5170 p += mcnt; /* Do the jump. */
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5171 DEBUG_PRINT2 ("(to %p).\n", p);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5172 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5173
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5174
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5175 /* Have to succeed matching what follows at least n times.
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5176 After that, handle like `on_failure_jump'. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5177 case succeed_n:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5178 EXTRACT_NUMBER (mcnt, p + 2);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5179 DEBUG_PRINT2 ("EXECUTING succeed_n %d.\n", mcnt);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5180
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5181 assert (mcnt >= 0);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5182 /* Originally, this is how many times we HAVE to succeed. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5183 if (mcnt > 0)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5184 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5185 mcnt--;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5186 p += 2;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5187 STORE_NUMBER_AND_INCR (p, mcnt);
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5188 DEBUG_PRINT3 (" Setting %p to %d.\n", p, mcnt);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5189 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5190 else if (mcnt == 0)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5191 {
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5192 DEBUG_PRINT2 (" Setting two bytes from %p to no_op.\n", p+2);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5193 p[2] = (unsigned char) no_op;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5194 p[3] = (unsigned char) no_op;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5195 goto on_failure;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5196 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5197 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5198
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5199 case jump_n:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5200 EXTRACT_NUMBER (mcnt, p + 2);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5201 DEBUG_PRINT2 ("EXECUTING jump_n %d.\n", mcnt);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5202
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5203 /* Originally, this is how many times we CAN jump. */
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5204 if (mcnt)
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5205 {
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5206 mcnt--;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5207 STORE_NUMBER (p + 2, mcnt);
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5208 goto unconditional_jump;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5209 }
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5210 /* If don't have to jump any more, skip over the rest of command. */
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5211 else
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5212 p += 4;
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5213 break;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5214
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5215 case set_number_at:
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5216 {
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5217 DEBUG_PRINT1 ("EXECUTING set_number_at.\n");
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5218
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5219 EXTRACT_NUMBER_AND_INCR (mcnt, p);
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5220 p1 = p + mcnt;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5221 EXTRACT_NUMBER_AND_INCR (mcnt, p);
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5222 DEBUG_PRINT3 (" Setting %p to %d.\n", p1, mcnt);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5223 STORE_NUMBER (p1, mcnt);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5224 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5225 }
521
7089c3a3a164 (AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents: 515
diff changeset
5226
7089c3a3a164 (AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents: 515
diff changeset
5227 case wordbound:
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5228 case notwordbound:
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5229 not = (re_opcode_t) *(p - 1) == notwordbound;
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5230 DEBUG_PRINT2 ("EXECUTING %swordbound.\n", not?"not":"");
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5231
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
5232 /* We SUCCEED (or FAIL) in one of the following cases: */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5233
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5234 /* Case 1: D is at the beginning or the end of string. */
521
7089c3a3a164 (AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents: 515
diff changeset
5235 if (AT_STRINGS_BEG (d) || AT_STRINGS_END (d))
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5236 not = !not;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5237 else
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5238 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5239 /* C1 is the character before D, S1 is the syntax of C1, C2
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5240 is the character at D, and S2 is the syntax of C2. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5241 int c1, c2, s1, s2;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5242 #ifdef emacs
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5243 int charpos = SYNTAX_TABLE_BYTE_TO_CHAR (PTR_TO_OFFSET (d - 1));
1204
28ff40a118b8 (re_search_2): Fix call to CHAR_HEAD_P.
Richard Stallman <rms@gnu.org>
parents: 1158
diff changeset
5244 UPDATE_SYNTAX_TABLE (charpos);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5245 #endif
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5246 /* FIXME: This does a STRING_CHAR even for unibyte buffers. */
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5247 GET_CHAR_BEFORE_2 (c1, d, string1, end1, string2, end2);
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5248 s1 = SYNTAX (c1);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5249 #ifdef emacs
1204
28ff40a118b8 (re_search_2): Fix call to CHAR_HEAD_P.
Richard Stallman <rms@gnu.org>
parents: 1158
diff changeset
5250 UPDATE_SYNTAX_TABLE_FORWARD (charpos + 1);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5251 #endif
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5252 PREFETCH ();
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5253 /* FIXME: This does a STRING_CHAR even for unibyte buffers. */
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5254 c2 = STRING_CHAR (d, dend - d);
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5255 s2 = SYNTAX (c2);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5256
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5257 if (/* Case 2: Only one of S1 and S2 is Sword. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5258 ((s1 == Sword) != (s2 == Sword))
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5259 /* Case 3: Both of S1 and S2 are Sword, and macro
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5260 WORD_BOUNDARY_P (C1, C2) returns nonzero. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5261 || ((s1 == Sword) && WORD_BOUNDARY_P (c1, c2)))
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5262 not = !not;
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5263 }
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5264 if (not)
521
7089c3a3a164 (AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents: 515
diff changeset
5265 break;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5266 else
521
7089c3a3a164 (AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents: 515
diff changeset
5267 goto fail;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5268
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5269 case wordbeg:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5270 DEBUG_PRINT1 ("EXECUTING wordbeg.\n");
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5271
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5272 /* We FAIL in one of the following cases: */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5273
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5274 /* Case 1: D is at the end of string. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5275 if (AT_STRINGS_END (d))
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
5276 goto fail;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5277 else
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5278 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5279 /* C1 is the character before D, S1 is the syntax of C1, C2
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5280 is the character at D, and S2 is the syntax of C2. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5281 int c1, c2, s1, s2;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5282 #ifdef emacs
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
5283 int charpos = SYNTAX_TABLE_BYTE_TO_CHAR (PTR_TO_OFFSET (d));
1218
51cf07183c67 (re_match_2_internal): Use SYNTAX_TABLE_BYTE_TO_CHAR.
Richard Stallman <rms@gnu.org>
parents: 1204
diff changeset
5284 UPDATE_SYNTAX_TABLE (charpos);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5285 #endif
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
5286 PREFETCH ();
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
5287 /* FIXME: This does a STRING_CHAR even for unibyte buffers. */
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
5288 c2 = STRING_CHAR (d, dend - d);
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5289 s2 = SYNTAX (c2);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5290
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5291 /* Case 2: S2 is not Sword. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5292 if (s2 != Sword)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5293 goto fail;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5294
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5295 /* Case 3: D is not at the beginning of string ... */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5296 if (!AT_STRINGS_BEG (d))
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5297 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5298 GET_CHAR_BEFORE_2 (c1, d, string1, end1, string2, end2);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5299 #ifdef emacs
1204
28ff40a118b8 (re_search_2): Fix call to CHAR_HEAD_P.
Richard Stallman <rms@gnu.org>
parents: 1158
diff changeset
5300 UPDATE_SYNTAX_TABLE_BACKWARD (charpos - 1);
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5301 #endif
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5302 s1 = SYNTAX (c1);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5303
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5304 /* ... and S1 is Sword, and WORD_BOUNDARY_P (C1, C2)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5305 returns 0. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5306 if ((s1 == Sword) && !WORD_BOUNDARY_P (c1, c2))
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5307 goto fail;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5308 }
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5309 }
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5310 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5311
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5312 case wordend:
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5313 DEBUG_PRINT1 ("EXECUTING wordend.\n");
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5314
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5315 /* We FAIL in one of the following cases: */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5316
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5317 /* Case 1: D is at the beginning of string. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5318 if (AT_STRINGS_BEG (d))
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5319 goto fail;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5320 else
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5321 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5322 /* C1 is the character before D, S1 is the syntax of C1, C2
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5323 is the character at D, and S2 is the syntax of C2. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5324 int c1, c2, s1, s2;
1204
28ff40a118b8 (re_search_2): Fix call to CHAR_HEAD_P.
Richard Stallman <rms@gnu.org>
parents: 1158
diff changeset
5325 #ifdef emacs
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
5326 int charpos = SYNTAX_TABLE_BYTE_TO_CHAR (PTR_TO_OFFSET (d) - 1);
1218
51cf07183c67 (re_match_2_internal): Use SYNTAX_TABLE_BYTE_TO_CHAR.
Richard Stallman <rms@gnu.org>
parents: 1204
diff changeset
5327 UPDATE_SYNTAX_TABLE (charpos);
1204
28ff40a118b8 (re_search_2): Fix call to CHAR_HEAD_P.
Richard Stallman <rms@gnu.org>
parents: 1158
diff changeset
5328 #endif
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
5329 GET_CHAR_BEFORE_2 (c1, d, string1, end1, string2, end2);
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5330 s1 = SYNTAX (c1);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5331
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5332 /* Case 2: S1 is not Sword. */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5333 if (s1 != Sword)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5334 goto fail;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5335
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5336 /* Case 3: D is not at the end of string ... */
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5337 if (!AT_STRINGS_END (d))
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5338 {
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5339 PREFETCH ();
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
5340 /* FIXME: This does a STRING_CHAR even for unibyte buffers. */
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5341 c2 = STRING_CHAR (d, dend - d);
1204
28ff40a118b8 (re_search_2): Fix call to CHAR_HEAD_P.
Richard Stallman <rms@gnu.org>
parents: 1158
diff changeset
5342 #ifdef emacs
28ff40a118b8 (re_search_2): Fix call to CHAR_HEAD_P.
Richard Stallman <rms@gnu.org>
parents: 1158
diff changeset
5343 UPDATE_SYNTAX_TABLE_FORWARD (charpos);
28ff40a118b8 (re_search_2): Fix call to CHAR_HEAD_P.
Richard Stallman <rms@gnu.org>
parents: 1158
diff changeset
5344 #endif
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5345 s2 = SYNTAX (c2);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5346
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5347 /* ... and S2 is Sword, and WORD_BOUNDARY_P (C1, C2)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5348 returns 0. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5349 if ((s2 == Sword) && !WORD_BOUNDARY_P (c1, c2))
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5350 goto fail;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5351 }
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5352 }
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5353 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5354
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5355 case syntaxspec:
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5356 case notsyntaxspec:
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5357 not = (re_opcode_t) *(p - 1) == notsyntaxspec;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5358 mcnt = *p++;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5359 DEBUG_PRINT3 ("EXECUTING %ssyntaxspec %d.\n", not?"not":"", mcnt);
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5360 PREFETCH ();
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5361 #ifdef emacs
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5362 {
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5363 int pos1 = SYNTAX_TABLE_BYTE_TO_CHAR (PTR_TO_OFFSET (d));
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5364 UPDATE_SYNTAX_TABLE (pos1);
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5365 }
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5366 #endif
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5367 {
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5368 int c, len;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5369
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5370 if (multibyte)
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5371 /* we must concern about multibyte form, ... */
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5372 c = STRING_CHAR_AND_LENGTH (d, dend - d, len);
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5373 else
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5374 /* everything should be handled as ASCII, even though it
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5375 looks like multibyte form. */
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5376 c = *d, len = 1;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5377
2359
dbf725277cfc (enum syntaxcode): Provide default for non-Emacs.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2357
diff changeset
5378 if ((SYNTAX (c) != (enum syntaxcode) mcnt) ^ not)
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5379 goto fail;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5380 d += len;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5381 }
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5382 break;
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5383
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5384 #ifdef emacs
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5385 case before_dot:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5386 DEBUG_PRINT1 ("EXECUTING before_dot.\n");
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5387 if (PTR_BYTE_POS (d) >= PT_BYTE)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5388 goto fail;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5389 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5390
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5391 case at_dot:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5392 DEBUG_PRINT1 ("EXECUTING at_dot.\n");
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5393 if (PTR_BYTE_POS (d) != PT_BYTE)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5394 goto fail;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5395 break;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5396
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5397 case after_dot:
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5398 DEBUG_PRINT1 ("EXECUTING after_dot.\n");
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5399 if (PTR_BYTE_POS (d) <= PT_BYTE)
941
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5400 goto fail;
a6403bc27be4 Fix up whitespace.
Richard Stallman <rms@gnu.org>
parents: 939
diff changeset
5401 break;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5402
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5403 case categoryspec:
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5404 case notcategoryspec:
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5405 not = (re_opcode_t) *(p - 1) == notcategoryspec;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5406 mcnt = *p++;
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5407 DEBUG_PRINT3 ("EXECUTING %scategoryspec %d.\n", not?"not":"", mcnt);
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5408 PREFETCH ();
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5409 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5410 int c, len;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5411
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5412 if (multibyte)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5413 c = STRING_CHAR_AND_LENGTH (d, dend - d, len);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5414 else
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5415 c = *d, len = 1;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5416
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5417 if ((!CHAR_HAS_CATEGORY (c, mcnt)) ^ not)
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5418 goto fail;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5419 d += len;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5420 }
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5421 break;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5422
2356
d93889e88226 (CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2355
diff changeset
5423 #endif /* emacs */
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5424
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5425 default:
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5426 abort ();
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5427 }
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5428 continue; /* Successfully executed one pattern command; keep going. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5429
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5430
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5431 /* We goto here if a matching operation fails. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5432 fail:
1660
ef1f39a7e7c3 (re_match_2_internal) [WINDOWSNT & emacs]: Insert QUIT at various places.
Richard Stallman <rms@gnu.org>
parents: 1583
diff changeset
5433 QUIT;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5434 if (!FAIL_STACK_EMPTY ())
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5435 {
2349
5fa185a9956e * regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2345
diff changeset
5436 re_char *str;
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5437 unsigned char *pat;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5438 /* A restart point is known. Restore to that state. */
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5439 DEBUG_PRINT1 ("\nFAIL:\n");
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5440 POP_FAILURE_POINT (str, pat);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5441 switch (SWITCH_ENUM_CAST ((re_opcode_t) *pat++))
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5442 {
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5443 case on_failure_keep_string_jump:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5444 assert (str == NULL);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5445 goto continue_failure_jump;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5446
2370
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5447 case on_failure_jump_nastyloop:
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5448 assert ((re_opcode_t)pat[-2] == no_op);
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5449 PUSH_FAILURE_POINT (pat - 2, str);
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5450 /* Fallthrough */
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5451
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5452 case on_failure_jump_loop:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5453 case on_failure_jump:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5454 case succeed_n:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5455 d = str;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5456 continue_failure_jump:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5457 EXTRACT_NUMBER_AND_INCR (mcnt, pat);
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5458 p = pat + mcnt;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5459 break;
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5460
2370
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5461 case no_op:
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5462 /* A special frame used for nastyloops. */
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5463 goto fail;
d8ded9c0e20c (enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2359
diff changeset
5464
2345
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5465 default:
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5466 abort();
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5467 }
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5468
93d6633849d6 This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2153
diff changeset
5469 assert (p >= bufp->buffer && p <= pend);
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5470
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5471 if (d >= string1 && d <= end1)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5472 dend = end_match_1;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5473 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5474 else
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5475 break; /* Matching at this starting point really fails. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5476 } /* for (;;) */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5477
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5478 if (best_regs_set)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5479 goto restore_best_regs;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5480
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5481 FREE_VARIABLES ();
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5482
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5483 return -1; /* Failure to match. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5484 } /* re_match_2 */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5485
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5486 /* Subroutine definitions for re_match_2. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5487
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5488 /* Return zero if TRANSLATE[S1] and TRANSLATE[S2] are identical for LEN
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5489 bytes; nonzero otherwise. */
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5490
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5491 static int
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5492 bcmp_translate (s1, s2, len, translate)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5493 unsigned char *s1, *s2;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5494 register int len;
501
f29b13c2cefd (TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents: 490
diff changeset
5495 RE_TRANSLATE_TYPE translate;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5496 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5497 register unsigned char *p1 = s1, *p2 = s2;
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5498 unsigned char *p1_end = s1 + len;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5499 unsigned char *p2_end = s2 + len;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5500
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5501 while (p1 != p1_end && p2 != p2_end)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5502 {
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5503 int p1_charlen, p2_charlen;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5504 int p1_ch, p2_ch;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5505
2350
f3edfed6aa96 (re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents: 2349
diff changeset
5506 /* FIXME: This assumes `multibyte = true'. */
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5507 p1_ch = STRING_CHAR_AND_LENGTH (p1, p1_end - p1, p1_charlen);
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5508 p2_ch = STRING_CHAR_AND_LENGTH (p2, p2_end - p2, p2_charlen);
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5509
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5510 if (RE_TRANSLATE (translate, p1_ch)
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5511 != RE_TRANSLATE (translate, p2_ch))
963
ed0235161e4b (TRANSLATE, re_search_2, re_match_2_internal,bcmp_translate):
Richard Stallman <rms@gnu.org>
parents: 961
diff changeset
5512 return 1;
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5513
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5514 p1 += p1_charlen, p2 += p2_charlen;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5515 }
1296
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5516
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5517 if (p1 != p1_end || p2 != p2_end)
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5518 return 1;
7b938cc81ae2 (compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents: 1218
diff changeset
5519
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5520 return 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5521 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5522
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5523 /* Entry points for GNU code. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5524
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5525 /* re_compile_pattern is the GNU regular expression compiler: it
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5526 compiles PATTERN (of length SIZE) and puts the result in BUFP.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5527 Returns 0 if the pattern was valid, otherwise an error string.
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5528
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5529 Assumes the `allocated' (and perhaps `buffer') and `translate' fields
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5530 are set in BUFP on entry.
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5531
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5532 We call regex_compile to do the actual compilation. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5533
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5534 const char *
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5535 re_compile_pattern (pattern, length, bufp)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5536 const char *pattern;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5537 int length;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5538 struct re_pattern_buffer *bufp;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5539 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5540 reg_errcode_t ret;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5541
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5542 /* GNU code is written to assume at least RE_NREGS registers will be set
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5543 (and at least one extra will be -1). */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5544 bufp->regs_allocated = REGS_UNALLOCATED;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5545
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5546 /* And GNU code determines whether or not to get register information
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5547 by passing null for the REGS argument to re_match, etc., not by
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5548 setting no_sub. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5549 bufp->no_sub = 0;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5550
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5551 /* Match anchors at newline. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5552 bufp->newline_anchor = 1;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5553
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5554 ret = regex_compile (pattern, length, re_syntax_options, bufp);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5555
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5556 if (!ret)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5557 return NULL;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5558 return gettext (re_error_msgid[(int) ret]);
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5559 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5560
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5561 /* Entry points compatible with 4.2 BSD regex library. We don't define
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5562 them unless specifically requested. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5563
622
152fc00ed9b5 Tue May 21 19:18:05 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
Roland McGrath <roland@gnu.org>
parents: 607
diff changeset
5564 #if defined (_REGEX_RE_COMP) || defined (_LIBC)
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5565
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5566 /* BSD has one and only one pattern buffer. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5567 static struct re_pattern_buffer re_comp_buf;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5568
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5569 char *
636
ddd029a89661 [_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents: 631
diff changeset
5570 #ifdef _LIBC
ddd029a89661 [_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents: 631
diff changeset
5571 /* Make these definitions weak in libc, so POSIX programs can redefine
ddd029a89661 [_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents: 631
diff changeset
5572 these names if they don't use our functions, and still use
ddd029a89661 [_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents: 631
diff changeset
5573 regcomp/regexec below without link errors. */
ddd029a89661 [_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents: 631
diff changeset
5574 weak_function
ddd029a89661 [_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents: 631
diff changeset
5575 #endif
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5576 re_comp (s)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5577 const char *s;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5578 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5579 reg_errcode_t ret;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5580
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5581 if (!s)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5582 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5583 if (!re_comp_buf.buffer)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5584 return gettext ("No previous regular expression");
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5585 return 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5586 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5587
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5588 if (!re_comp_buf.buffer)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5589 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5590 re_comp_buf.buffer = (unsigned char *) malloc (200);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5591 if (re_comp_buf.buffer == NULL)
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5592 return gettext (re_error_msgid[(int) REG_ESPACE]);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5593 re_comp_buf.allocated = 200;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5594
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5595 re_comp_buf.fastmap = (char *) malloc (1 << BYTEWIDTH);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5596 if (re_comp_buf.fastmap == NULL)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5597 return gettext (re_error_msgid[(int) REG_ESPACE]);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5598 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5599
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5600 /* Since `re_exec' always passes NULL for the `regs' argument, we
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5601 don't need to initialize the pattern buffer fields which affect it. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5602
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5603 /* Match anchors at newlines. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5604 re_comp_buf.newline_anchor = 1;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5605
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5606 ret = regex_compile (s, strlen (s), re_syntax_options, &re_comp_buf);
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5607
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5608 if (!ret)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5609 return NULL;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5610
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5611 /* Yes, we're discarding `const' here if !HAVE_LIBINTL. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5612 return (char *) gettext (re_error_msgid[(int) ret]);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5613 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5614
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5615
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5616 int
636
ddd029a89661 [_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents: 631
diff changeset
5617 #ifdef _LIBC
ddd029a89661 [_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents: 631
diff changeset
5618 weak_function
ddd029a89661 [_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents: 631
diff changeset
5619 #endif
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5620 re_exec (s)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5621 const char *s;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5622 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5623 const int len = strlen (s);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5624 return
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5625 0 <= re_search (&re_comp_buf, s, len, 0, len, (struct re_registers *) 0);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5626 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5627 #endif /* _REGEX_RE_COMP */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5628
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5629 /* POSIX.2 functions. Don't define these for Emacs. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5630
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5631 #ifndef emacs
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5632
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5633 /* regcomp takes a regular expression as a string and compiles it.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5634
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5635 PREG is a regex_t *. We do not expect any fields to be initialized,
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5636 since POSIX says we shouldn't. Thus, we set
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5637
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5638 `buffer' to the compiled pattern;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5639 `used' to the length of the compiled pattern;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5640 `syntax' to RE_SYNTAX_POSIX_EXTENDED if the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5641 REG_EXTENDED bit in CFLAGS is set; otherwise, to
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5642 RE_SYNTAX_POSIX_BASIC;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5643 `newline_anchor' to REG_NEWLINE being set in CFLAGS;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5644 `fastmap' and `fastmap_accurate' to zero;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5645 `re_nsub' to the number of subexpressions in PATTERN.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5646
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5647 PATTERN is the address of the pattern string.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5648
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5649 CFLAGS is a series of bits which affect compilation.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5650
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5651 If REG_EXTENDED is set, we use POSIX extended syntax; otherwise, we
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5652 use POSIX basic syntax.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5653
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5654 If REG_NEWLINE is set, then . and [^...] don't match newline.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5655 Also, regexec will try a match beginning after every newline.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5656
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5657 If REG_ICASE is set, then we considers upper- and lowercase
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5658 versions of letters to be equivalent when matching.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5659
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5660 If REG_NOSUB is set, then when PREG is passed to regexec, that
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5661 routine will report only success or failure, and nothing about the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5662 registers.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5663
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5664 It returns 0 if it succeeds, nonzero if it doesn't. (See regex.h for
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5665 the return codes and their meanings.) */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5666
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5667 int
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5668 regcomp (preg, pattern, cflags)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5669 regex_t *preg;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5670 const char *pattern;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5671 int cflags;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5672 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5673 reg_errcode_t ret;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5674 unsigned syntax
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5675 = (cflags & REG_EXTENDED) ?
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5676 RE_SYNTAX_POSIX_EXTENDED : RE_SYNTAX_POSIX_BASIC;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5677
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5678 /* regex_compile will allocate the space for the compiled pattern. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5679 preg->buffer = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5680 preg->allocated = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5681 preg->used = 0;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5682
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5683 /* Don't bother to use a fastmap when searching. This simplifies the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5684 REG_NEWLINE case: if we used a fastmap, we'd have to put all the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5685 characters after newlines into the fastmap. This way, we just try
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5686 every character. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5687 preg->fastmap = 0;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5688
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5689 if (cflags & REG_ICASE)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5690 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5691 unsigned i;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5692
501
f29b13c2cefd (TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents: 490
diff changeset
5693 preg->translate
f29b13c2cefd (TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents: 490
diff changeset
5694 = (RE_TRANSLATE_TYPE) malloc (CHAR_SET_SIZE
f29b13c2cefd (TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents: 490
diff changeset
5695 * sizeof (*(RE_TRANSLATE_TYPE)0));
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5696 if (preg->translate == NULL)
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5697 return (int) REG_ESPACE;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5698
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5699 /* Map uppercase characters to corresponding lowercase ones. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5700 for (i = 0; i < CHAR_SET_SIZE; i++)
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5701 preg->translate[i] = ISUPPER (i) ? tolower (i) : i;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5702 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5703 else
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5704 preg->translate = NULL;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5705
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5706 /* If REG_NEWLINE is set, newlines are treated differently. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5707 if (cflags & REG_NEWLINE)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5708 { /* REG_NEWLINE implies neither . nor [^...] match newline. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5709 syntax &= ~RE_DOT_NEWLINE;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5710 syntax |= RE_HAT_LISTS_NOT_NEWLINE;
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5711 /* It also changes the matching behavior. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5712 preg->newline_anchor = 1;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5713 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5714 else
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5715 preg->newline_anchor = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5716
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5717 preg->no_sub = !!(cflags & REG_NOSUB);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5718
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5719 /* POSIX says a null character in the pattern terminates it, so we
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5720 can use strlen here in compiling the pattern. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5721 ret = regex_compile (pattern, strlen (pattern), syntax, preg);
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5722
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5723 /* POSIX doesn't distinguish between an unmatched open-group and an
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5724 unmatched close-group: both are REG_EPAREN. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5725 if (ret == REG_ERPAREN) ret = REG_EPAREN;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5726
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5727 return (int) ret;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5728 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5729
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5730
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5731 /* regexec searches for a given pattern, specified by PREG, in the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5732 string STRING.
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5733
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5734 If NMATCH is zero or REG_NOSUB was set in the cflags argument to
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5735 `regcomp', we ignore PMATCH. Otherwise, we assume PMATCH has at
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5736 least NMATCH elements, and we set them to the offsets of the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5737 corresponding matched substrings.
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5738
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5739 EFLAGS specifies `execution flags' which affect matching: if
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5740 REG_NOTBOL is set, then ^ does not match at the beginning of the
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5741 string; if REG_NOTEOL is set, then $ does not match at the end.
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5742
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5743 We return 0 if we find a match and REG_NOMATCH if not. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5744
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5745 int
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5746 regexec (preg, string, nmatch, pmatch, eflags)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5747 const regex_t *preg;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5748 const char *string;
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5749 size_t nmatch;
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5750 regmatch_t pmatch[];
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5751 int eflags;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5752 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5753 int ret;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5754 struct re_registers regs;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5755 regex_t private_preg;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5756 int len = strlen (string);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5757 boolean want_reg_info = !preg->no_sub && nmatch > 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5758
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5759 private_preg = *preg;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5760
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5761 private_preg.not_bol = !!(eflags & REG_NOTBOL);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5762 private_preg.not_eol = !!(eflags & REG_NOTEOL);
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5763
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5764 /* The user has told us exactly how many registers to return
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5765 information about, via `nmatch'. We have to pass that on to the
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5766 matching routines. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5767 private_preg.regs_allocated = REGS_FIXED;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5768
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5769 if (want_reg_info)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5770 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5771 regs.num_regs = nmatch;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5772 regs.start = TALLOC (nmatch, regoff_t);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5773 regs.end = TALLOC (nmatch, regoff_t);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5774 if (regs.start == NULL || regs.end == NULL)
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5775 return (int) REG_NOMATCH;
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5776 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5777
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5778 /* Perform the searching operation. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5779 ret = re_search (&private_preg, string, len,
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5780 /* start: */ 0, /* range: */ len,
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5781 want_reg_info ? &regs : (struct re_registers *) 0);
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5782
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5783 /* Copy the register information to the POSIX structure. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5784 if (want_reg_info)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5785 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5786 if (ret >= 0)
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5787 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5788 unsigned r;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5789
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5790 for (r = 0; r < nmatch; r++)
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5791 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5792 pmatch[r].rm_so = regs.start[r];
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5793 pmatch[r].rm_eo = regs.end[r];
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5794 }
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5795 }
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5796
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5797 /* If we needed the temporary register info, free the space now. */
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5798 free (regs.start);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5799 free (regs.end);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5800 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5801
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5802 /* We want zero return to mean success, unlike `re_search'. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5803 return ret >= 0 ? (int) REG_NOERROR : (int) REG_NOMATCH;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5804 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5805
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5806
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5807 /* Returns a message corresponding to an error code, ERRCODE, returned
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5808 from either regcomp or regexec. We don't use PREG here. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5809
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5810 size_t
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5811 regerror (errcode, preg, errbuf, errbuf_size)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5812 int errcode;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5813 const regex_t *preg;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5814 char *errbuf;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5815 size_t errbuf_size;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5816 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5817 const char *msg;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5818 size_t msg_size;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5819
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5820 if (errcode < 0
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5821 || errcode >= (sizeof (re_error_msgid) / sizeof (re_error_msgid[0])))
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5822 /* Only error codes returned by the rest of the code should be passed
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5823 to this routine. If we are given anything else, or if other regex
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5824 code generates an invalid error code, then the program has a bug.
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5825 Dump core so we can fix it. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5826 abort ();
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5827
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5828 msg = gettext (re_error_msgid[errcode]);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5829
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5830 msg_size = strlen (msg) + 1; /* Includes the null. */
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5831
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5832 if (errbuf_size != 0)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5833 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5834 if (msg_size > errbuf_size)
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5835 {
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5836 strncpy (errbuf, msg, errbuf_size - 1);
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5837 errbuf[errbuf_size - 1] = 0;
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5838 }
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5839 else
939
ace17b6e9d29 (PTR_TO_OFFSET): New macro.
Richard Stallman <rms@gnu.org>
parents: 786
diff changeset
5840 strcpy (errbuf, msg);
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5841 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5842
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5843 return msg_size;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5844 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5845
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5846
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5847 /* Free dynamically allocated space used by PREG. */
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5848
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5849 void
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5850 regfree (preg)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5851 regex_t *preg;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5852 {
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5853 if (preg->buffer != NULL)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5854 free (preg->buffer);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5855 preg->buffer = NULL;
515
69ba3b63e1d1 (gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents: 511
diff changeset
5856
441
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5857 preg->allocated = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5858 preg->used = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5859
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5860 if (preg->fastmap != NULL)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5861 free (preg->fastmap);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5862 preg->fastmap = NULL;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5863 preg->fastmap_accurate = 0;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5864
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5865 if (preg->translate != NULL)
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5866 free (preg->translate);
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5867 preg->translate = NULL;
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5868 }
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5869
403b2dfdfa0b Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents: 438
diff changeset
5870 #endif /* not emacs */