Mercurial > hg > octave-kai > gnulib-hg
annotate regex.c @ 2881:d3634ee92a43
(WIDE_CHAR_SUPPORT): Define if _LIBC as well.
Mostly, just a test of the CVS repository.
| author | Stefan Monnier <monnier@iro.umontreal.ca> |
|---|---|
| date | Sun, 15 Oct 2000 16:44:45 +0000 |
| parents | 2906c0067d9c |
| children | 30949ab3be6d |
| rev | line source |
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1 /* Only edit this file through the CVS module in subversions. This file |
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2 is automatically updated whenever changes are made to it there, and |
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3 all of your work will be lost! - jbailey Sep 19, 2000 */ |
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4 |
| 679 | 5 /* Extended regular expression matching and search library, version |
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6 0.12. (Implements POSIX draft P1003.2/D11.2, except for some of the |
| 2 | 7 internationalization features.) |
| 8 | |
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9 Copyright (C) 1993,94,95,96,97,98,99,2000 Free Software Foundation, Inc. |
| 2 | 10 |
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11 This program is free software; you can redistribute it and/or modify |
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12 it under the terms of the GNU General Public License as published by |
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13 the Free Software Foundation; either version 2, or (at your option) |
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14 any later version. |
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15 |
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16 This program is distributed in the hope that it will be useful, |
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17 but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 941 | 18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
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19 GNU General Public License for more details. |
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20 |
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21 You should have received a copy of the GNU General Public License |
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22 along with this program; if not, write to the Free Software |
| 542 | 23 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| 941 | 24 USA. */ |
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25 |
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26 /* TODO: |
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27 - structure the opcode space into opcode+flag. |
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28 - merge with glibc's regex.[ch]. |
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29 - replace succeed_n + jump_n with a combined operation so that the counter |
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30 can simply be decremented when popping the failure_point without having |
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31 to stack up failure_count entries. |
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32 */ |
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33 |
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34 /* AIX requires this to be the first thing in the file. */ |
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35 #if defined _AIX && !defined REGEX_MALLOC |
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36 #pragma alloca |
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37 #endif |
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38 |
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39 #undef _GNU_SOURCE |
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40 #define _GNU_SOURCE |
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41 |
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42 #ifdef HAVE_CONFIG_H |
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43 # include <config.h> |
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44 #endif |
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45 |
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46 #if defined STDC_HEADERS && !defined emacs |
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47 # include <stddef.h> |
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48 #else |
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49 /* We need this for `regex.h', and perhaps for the Emacs include files. */ |
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50 # include <sys/types.h> |
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51 #endif |
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52 |
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53 /* Whether to use ISO C Amendment 1 wide char functions. |
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54 Those should not be used for Emacs since it uses its own. */ |
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55 #define WIDE_CHAR_SUPPORT \ |
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56 (defined _LIBC || HAVE_WCTYPE_H && HAVE_WCHAR_H && HAVE_BTOWC && !emacs) |
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57 |
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58 /* For platform which support the ISO C amendement 1 functionality we |
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59 support user defined character classes. */ |
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60 #if WIDE_CHAR_SUPPORT |
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61 /* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>. */ |
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62 # include <wchar.h> |
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63 # include <wctype.h> |
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64 #endif |
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65 |
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66 #ifdef _LIBC |
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67 /* We have to keep the namespace clean. */ |
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68 # define regfree(preg) __regfree (preg) |
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69 # define regexec(pr, st, nm, pm, ef) __regexec (pr, st, nm, pm, ef) |
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70 # define regcomp(preg, pattern, cflags) __regcomp (preg, pattern, cflags) |
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71 # define regerror(errcode, preg, errbuf, errbuf_size) \ |
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72 __regerror(errcode, preg, errbuf, errbuf_size) |
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73 # define re_set_registers(bu, re, nu, st, en) \ |
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74 __re_set_registers (bu, re, nu, st, en) |
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75 # define re_match_2(bufp, string1, size1, string2, size2, pos, regs, stop) \ |
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76 __re_match_2 (bufp, string1, size1, string2, size2, pos, regs, stop) |
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77 # define re_match(bufp, string, size, pos, regs) \ |
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78 __re_match (bufp, string, size, pos, regs) |
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79 # define re_search(bufp, string, size, startpos, range, regs) \ |
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80 __re_search (bufp, string, size, startpos, range, regs) |
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81 # define re_compile_pattern(pattern, length, bufp) \ |
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82 __re_compile_pattern (pattern, length, bufp) |
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83 # define re_set_syntax(syntax) __re_set_syntax (syntax) |
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84 # define re_search_2(bufp, st1, s1, st2, s2, startpos, range, regs, stop) \ |
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85 __re_search_2 (bufp, st1, s1, st2, s2, startpos, range, regs, stop) |
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86 # define re_compile_fastmap(bufp) __re_compile_fastmap (bufp) |
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87 |
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88 /* Make sure we call libc's function even if the user overrides them. */ |
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89 # define btowc __btowc |
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90 # define iswctype __iswctype |
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91 # define wctype __wctype |
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92 |
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93 # define WEAK_ALIAS(a,b) weak_alias (a, b) |
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94 |
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95 /* We are also using some library internals. */ |
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96 # include <locale/localeinfo.h> |
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97 # include <locale/elem-hash.h> |
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98 # include <langinfo.h> |
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99 #else |
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100 # define WEAK_ALIAS(a,b) |
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101 #endif |
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102 |
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103 /* This is for other GNU distributions with internationalized messages. */ |
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104 #if HAVE_LIBINTL_H || defined _LIBC |
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105 # include <libintl.h> |
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106 #else |
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107 # define gettext(msgid) (msgid) |
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108 #endif |
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109 |
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110 #ifndef gettext_noop |
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111 /* This define is so xgettext can find the internationalizable |
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112 strings. */ |
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113 # define gettext_noop(String) String |
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114 #endif |
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115 |
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116 /* The `emacs' switch turns on certain matching commands |
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117 that make sense only in Emacs. */ |
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118 #ifdef emacs |
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119 |
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120 # include "lisp.h" |
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121 # include "buffer.h" |
| 939 | 122 |
| 123 /* Make syntax table lookup grant data in gl_state. */ | |
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124 # define SYNTAX_ENTRY_VIA_PROPERTY |
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125 |
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126 # include "syntax.h" |
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127 # include "charset.h" |
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128 # include "category.h" |
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129 |
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130 # define malloc xmalloc |
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131 # define realloc xrealloc |
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132 # define free xfree |
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133 |
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134 /* Converts the pointer to the char to BEG-based offset from the start. */ |
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135 # define PTR_TO_OFFSET(d) POS_AS_IN_BUFFER (POINTER_TO_OFFSET (d)) |
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136 # define POS_AS_IN_BUFFER(p) ((p) + (NILP (re_match_object) || BUFFERP (re_match_object))) |
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137 |
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138 # define RE_MULTIBYTE_P(bufp) ((bufp)->multibyte) |
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139 # define RE_STRING_CHAR(p, s) \ |
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140 (multibyte ? (STRING_CHAR (p, s)) : (*(p))) |
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141 # define RE_STRING_CHAR_AND_LENGTH(p, s, len) \ |
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142 (multibyte ? (STRING_CHAR_AND_LENGTH (p, s, len)) : ((len) = 1, *(p))) |
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143 |
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144 /* Set C a (possibly multibyte) character before P. P points into a |
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145 string which is the virtual concatenation of STR1 (which ends at |
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146 END1) or STR2 (which ends at END2). */ |
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147 # define GET_CHAR_BEFORE_2(c, p, str1, end1, str2, end2) \ |
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148 do { \ |
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149 if (multibyte) \ |
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150 { \ |
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151 re_char *dtemp = (p) == (str2) ? (end1) : (p); \ |
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152 re_char *dlimit = ((p) > (str2) && (p) <= (end2)) ? (str2) : (str1); \ |
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153 while (dtemp-- > dlimit && !CHAR_HEAD_P (*dtemp)); \ |
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154 c = STRING_CHAR (dtemp, (p) - dtemp); \ |
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155 } \ |
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156 else \ |
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157 (c = ((p) == (str2) ? (end1) : (p))[-1]); \ |
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158 } while (0) |
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159 |
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160 |
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161 #else /* not emacs */ |
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162 |
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163 /* If we are not linking with Emacs proper, |
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164 we can't use the relocating allocator |
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165 even if config.h says that we can. */ |
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166 # undef REL_ALLOC |
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167 |
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168 # if defined STDC_HEADERS || defined _LIBC |
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169 # include <stdlib.h> |
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170 # else |
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171 char *malloc (); |
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172 char *realloc (); |
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173 # endif |
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174 |
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175 /* When used in Emacs's lib-src, we need to get bzero and bcopy somehow. |
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176 If nothing else has been done, use the method below. */ |
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177 # ifdef INHIBIT_STRING_HEADER |
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178 # if !(defined HAVE_BZERO && defined HAVE_BCOPY) |
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179 # if !defined bzero && !defined bcopy |
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180 # undef INHIBIT_STRING_HEADER |
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181 # endif |
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182 # endif |
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183 # endif |
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184 |
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185 /* This is the normal way of making sure we have memcpy, memcmp and bzero. |
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186 This is used in most programs--a few other programs avoid this |
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187 by defining INHIBIT_STRING_HEADER. */ |
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188 # ifndef INHIBIT_STRING_HEADER |
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189 # if defined HAVE_STRING_H || defined STDC_HEADERS || defined _LIBC |
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190 # include <string.h> |
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191 # ifndef bzero |
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192 # ifndef _LIBC |
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193 # define bzero(s, n) (memset (s, '\0', n), (s)) |
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194 # else |
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195 # define bzero(s, n) __bzero (s, n) |
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196 # endif |
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197 # endif |
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198 # else |
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199 # include <strings.h> |
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200 # ifndef memcmp |
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201 # define memcmp(s1, s2, n) bcmp (s1, s2, n) |
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202 # endif |
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203 # ifndef memcpy |
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204 # define memcpy(d, s, n) (bcopy (s, d, n), (d)) |
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205 # endif |
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206 # endif |
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207 # endif |
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208 |
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209 /* Define the syntax stuff for \<, \>, etc. */ |
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210 |
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211 /* Sword must be nonzero for the wordchar pattern commands in re_match_2. */ |
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212 enum syntaxcode { Swhitespace = 0, Sword = 1 }; |
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213 |
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214 # ifdef SWITCH_ENUM_BUG |
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215 # define SWITCH_ENUM_CAST(x) ((int)(x)) |
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216 # else |
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217 # define SWITCH_ENUM_CAST(x) (x) |
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218 # endif |
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219 |
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220 /* Dummy macros for non-Emacs environments. */ |
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221 # define BASE_LEADING_CODE_P(c) (0) |
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222 # define CHAR_CHARSET(c) 0 |
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223 # define CHARSET_LEADING_CODE_BASE(c) 0 |
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224 # define MAX_MULTIBYTE_LENGTH 1 |
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225 # define RE_MULTIBYTE_P(x) 0 |
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226 # define WORD_BOUNDARY_P(c1, c2) (0) |
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227 # define CHAR_HEAD_P(p) (1) |
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228 # define SINGLE_BYTE_CHAR_P(c) (1) |
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229 # define SAME_CHARSET_P(c1, c2) (1) |
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230 # define MULTIBYTE_FORM_LENGTH(p, s) (1) |
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231 # define STRING_CHAR(p, s) (*(p)) |
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232 # define RE_STRING_CHAR STRING_CHAR |
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233 # define CHAR_STRING(c, s) (*(s) = (c), 1) |
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234 # define STRING_CHAR_AND_LENGTH(p, s, actual_len) ((actual_len) = 1, *(p)) |
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235 # define RE_STRING_CHAR_AND_LENGTH STRING_CHAR_AND_LENGTH |
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236 # define GET_CHAR_BEFORE_2(c, p, str1, end1, str2, end2) \ |
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237 (c = ((p) == (str2) ? *((end1) - 1) : *((p) - 1))) |
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238 # define MAKE_CHAR(charset, c1, c2) (c1) |
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239 #endif /* not emacs */ |
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240 |
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241 #ifndef RE_TRANSLATE |
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242 # define RE_TRANSLATE(TBL, C) ((unsigned char)(TBL)[C]) |
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243 # define RE_TRANSLATE_P(TBL) (TBL) |
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244 #endif |
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245 |
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246 /* Get the interface, including the syntax bits. */ |
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247 #include "regex.h" |
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248 |
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249 /* isalpha etc. are used for the character classes. */ |
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250 #include <ctype.h> |
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251 |
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252 #ifdef emacs |
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253 |
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254 /* 1 if C is an ASCII character. */ |
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255 # define IS_REAL_ASCII(c) ((c) < 0200) |
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256 |
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257 /* 1 if C is a unibyte character. */ |
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258 # define ISUNIBYTE(c) (SINGLE_BYTE_CHAR_P ((c))) |
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259 |
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260 /* The Emacs definitions should not be directly affected by locales. */ |
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261 |
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262 /* In Emacs, these are only used for single-byte characters. */ |
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263 # define ISDIGIT(c) ((c) >= '0' && (c) <= '9') |
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264 # define ISCNTRL(c) ((c) < ' ') |
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265 # define ISXDIGIT(c) (((c) >= '0' && (c) <= '9') \ |
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266 || ((c) >= 'a' && (c) <= 'f') \ |
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267 || ((c) >= 'A' && (c) <= 'F')) |
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268 |
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269 /* This is only used for single-byte characters. */ |
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270 # define ISBLANK(c) ((c) == ' ' || (c) == '\t') |
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271 |
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272 /* The rest must handle multibyte characters. */ |
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273 |
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274 # define ISGRAPH(c) (SINGLE_BYTE_CHAR_P (c) \ |
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275 ? (c) > ' ' && !((c) >= 0177 && (c) <= 0237) \ |
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276 : 1) |
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277 |
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278 # define ISPRINT(c) (SINGLE_BYTE_CHAR_P (c) \ |
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279 ? (c) >= ' ' && !((c) >= 0177 && (c) <= 0237) \ |
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280 : 1) |
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281 |
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282 # define ISALNUM(c) (IS_REAL_ASCII (c) \ |
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283 ? (((c) >= 'a' && (c) <= 'z') \ |
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284 || ((c) >= 'A' && (c) <= 'Z') \ |
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285 || ((c) >= '0' && (c) <= '9')) \ |
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286 : SYNTAX (c) == Sword) |
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287 |
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288 # define ISALPHA(c) (IS_REAL_ASCII (c) \ |
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289 ? (((c) >= 'a' && (c) <= 'z') \ |
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290 || ((c) >= 'A' && (c) <= 'Z')) \ |
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291 : SYNTAX (c) == Sword) |
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292 |
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293 # define ISLOWER(c) (LOWERCASEP (c)) |
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294 |
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295 # define ISPUNCT(c) (IS_REAL_ASCII (c) \ |
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296 ? ((c) > ' ' && (c) < 0177 \ |
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297 && !(((c) >= 'a' && (c) <= 'z') \ |
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298 || ((c) >= 'A' && (c) <= 'Z') \ |
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299 || ((c) >= '0' && (c) <= '9'))) \ |
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300 : SYNTAX (c) != Sword) |
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301 |
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302 # define ISSPACE(c) (SYNTAX (c) == Swhitespace) |
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303 |
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304 # define ISUPPER(c) (UPPERCASEP (c)) |
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305 |
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306 # define ISWORD(c) (SYNTAX (c) == Sword) |
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307 |
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308 #else /* not emacs */ |
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309 |
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310 /* Jim Meyering writes: |
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311 |
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312 "... Some ctype macros are valid only for character codes that |
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313 isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when |
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314 using /bin/cc or gcc but without giving an ansi option). So, all |
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315 ctype uses should be through macros like ISPRINT... If |
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316 STDC_HEADERS is defined, then autoconf has verified that the ctype |
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317 macros don't need to be guarded with references to isascii. ... |
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318 Defining isascii to 1 should let any compiler worth its salt |
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319 eliminate the && through constant folding." |
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320 Solaris defines some of these symbols so we must undefine them first. */ |
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321 |
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322 # undef ISASCII |
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323 # if defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII) |
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324 # define ISASCII(c) 1 |
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325 # else |
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326 # define ISASCII(c) isascii(c) |
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327 # endif |
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328 |
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329 /* 1 if C is an ASCII character. */ |
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330 # define IS_REAL_ASCII(c) ((c) < 0200) |
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331 |
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332 /* This distinction is not meaningful, except in Emacs. */ |
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333 # define ISUNIBYTE(c) 1 |
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334 |
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335 # ifdef isblank |
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336 # define ISBLANK(c) (ISASCII (c) && isblank (c)) |
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337 # else |
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338 # define ISBLANK(c) ((c) == ' ' || (c) == '\t') |
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339 # endif |
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340 # ifdef isgraph |
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341 # define ISGRAPH(c) (ISASCII (c) && isgraph (c)) |
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342 # else |
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343 # define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c)) |
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344 # endif |
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345 |
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346 # undef ISPRINT |
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347 # define ISPRINT(c) (ISASCII (c) && isprint (c)) |
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348 # define ISDIGIT(c) (ISASCII (c) && isdigit (c)) |
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349 # define ISALNUM(c) (ISASCII (c) && isalnum (c)) |
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350 # define ISALPHA(c) (ISASCII (c) && isalpha (c)) |
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351 # define ISCNTRL(c) (ISASCII (c) && iscntrl (c)) |
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352 # define ISLOWER(c) (ISASCII (c) && islower (c)) |
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353 # define ISPUNCT(c) (ISASCII (c) && ispunct (c)) |
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354 # define ISSPACE(c) (ISASCII (c) && isspace (c)) |
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355 # define ISUPPER(c) (ISASCII (c) && isupper (c)) |
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356 # define ISXDIGIT(c) (ISASCII (c) && isxdigit (c)) |
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357 |
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358 # define ISWORD(c) ISALPHA(c) |
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359 |
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360 # ifdef _tolower |
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361 # define TOLOWER(c) _tolower(c) |
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362 # else |
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363 # define TOLOWER(c) tolower(c) |
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364 # endif |
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365 |
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366 /* How many characters in the character set. */ |
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367 # define CHAR_SET_SIZE 256 |
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368 |
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369 # ifdef SYNTAX_TABLE |
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370 |
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371 extern char *re_syntax_table; |
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372 |
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373 # else /* not SYNTAX_TABLE */ |
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374 |
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375 static char re_syntax_table[CHAR_SET_SIZE]; |
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376 |
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377 static void |
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378 init_syntax_once () |
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379 { |
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380 register int c; |
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381 static int done = 0; |
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382 |
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383 if (done) |
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384 return; |
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385 |
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386 bzero (re_syntax_table, sizeof re_syntax_table); |
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387 |
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388 for (c = 0; c < CHAR_SET_SIZE; ++c) |
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389 if (ISALNUM (c)) |
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390 re_syntax_table[c] = Sword; |
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391 |
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392 re_syntax_table['_'] = Sword; |
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393 |
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394 done = 1; |
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395 } |
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396 |
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397 # endif /* not SYNTAX_TABLE */ |
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398 |
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399 # define SYNTAX(c) re_syntax_table[(c)] |
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400 |
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401 #endif /* not emacs */ |
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402 |
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403 #ifndef NULL |
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404 # define NULL (void *)0 |
|
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405 #endif |
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406 |
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407 /* We remove any previous definition of `SIGN_EXTEND_CHAR', |
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408 since ours (we hope) works properly with all combinations of |
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409 machines, compilers, `char' and `unsigned char' argument types. |
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410 (Per Bothner suggested the basic approach.) */ |
|
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411 #undef SIGN_EXTEND_CHAR |
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412 #if __STDC__ |
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413 # define SIGN_EXTEND_CHAR(c) ((signed char) (c)) |
|
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414 #else /* not __STDC__ */ |
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415 /* As in Harbison and Steele. */ |
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416 # define SIGN_EXTEND_CHAR(c) ((((unsigned char) (c)) ^ 128) - 128) |
|
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417 #endif |
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418 |
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419 /* Should we use malloc or alloca? If REGEX_MALLOC is not defined, we |
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420 use `alloca' instead of `malloc'. This is because using malloc in |
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421 re_search* or re_match* could cause memory leaks when C-g is used in |
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422 Emacs; also, malloc is slower and causes storage fragmentation. On |
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423 the other hand, malloc is more portable, and easier to debug. |
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424 |
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425 Because we sometimes use alloca, some routines have to be macros, |
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426 not functions -- `alloca'-allocated space disappears at the end of the |
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427 function it is called in. */ |
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428 |
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429 #ifdef REGEX_MALLOC |
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430 |
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431 # define REGEX_ALLOCATE malloc |
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432 # define REGEX_REALLOCATE(source, osize, nsize) realloc (source, nsize) |
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433 # define REGEX_FREE free |
|
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434 |
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435 #else /* not REGEX_MALLOC */ |
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436 |
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437 /* Emacs already defines alloca, sometimes. */ |
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438 # ifndef alloca |
|
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439 |
|
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440 /* Make alloca work the best possible way. */ |
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441 # ifdef __GNUC__ |
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442 # define alloca __builtin_alloca |
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443 # else /* not __GNUC__ */ |
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444 # if HAVE_ALLOCA_H |
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445 # include <alloca.h> |
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446 # endif /* HAVE_ALLOCA_H */ |
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447 # endif /* not __GNUC__ */ |
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448 |
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449 # endif /* not alloca */ |
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450 |
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451 # define REGEX_ALLOCATE alloca |
|
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452 |
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453 /* Assumes a `char *destination' variable. */ |
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454 # define REGEX_REALLOCATE(source, osize, nsize) \ |
|
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455 (destination = (char *) alloca (nsize), \ |
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456 memcpy (destination, source, osize)) |
|
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457 |
|
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458 /* No need to do anything to free, after alloca. */ |
|
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459 # define REGEX_FREE(arg) ((void)0) /* Do nothing! But inhibit gcc warning. */ |
|
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460 |
|
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461 #endif /* not REGEX_MALLOC */ |
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462 |
|
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463 /* Define how to allocate the failure stack. */ |
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464 |
|
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465 #if defined REL_ALLOC && defined REGEX_MALLOC |
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466 |
|
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467 # define REGEX_ALLOCATE_STACK(size) \ |
|
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468 r_alloc (&failure_stack_ptr, (size)) |
|
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469 # define REGEX_REALLOCATE_STACK(source, osize, nsize) \ |
|
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470 r_re_alloc (&failure_stack_ptr, (nsize)) |
|
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471 # define REGEX_FREE_STACK(ptr) \ |
|
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472 r_alloc_free (&failure_stack_ptr) |
|
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|
473 |
|
462
115ffc5a3b13
Don't use relocatable allocator.
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|
474 #else /* not using relocating allocator */ |
|
441
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475 |
|
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476 # ifdef REGEX_MALLOC |
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477 |
|
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478 # define REGEX_ALLOCATE_STACK malloc |
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479 # define REGEX_REALLOCATE_STACK(source, osize, nsize) realloc (source, nsize) |
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480 # define REGEX_FREE_STACK free |
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481 |
|
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482 # else /* not REGEX_MALLOC */ |
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483 |
|
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484 # define REGEX_ALLOCATE_STACK alloca |
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485 |
|
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486 # define REGEX_REALLOCATE_STACK(source, osize, nsize) \ |
|
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487 REGEX_REALLOCATE (source, osize, nsize) |
| 941 | 488 /* No need to explicitly free anything. */ |
|
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489 # define REGEX_FREE_STACK(arg) ((void)0) |
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490 |
|
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491 # endif /* not REGEX_MALLOC */ |
|
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|
492 #endif /* not using relocating allocator */ |
|
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493 |
|
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494 |
|
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495 /* True if `size1' is non-NULL and PTR is pointing anywhere inside |
|
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496 `string1' or just past its end. This works if PTR is NULL, which is |
|
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|
497 a good thing. */ |
| 941 | 498 #define FIRST_STRING_P(ptr) \ |
|
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|
499 (size1 && string1 <= (ptr) && (ptr) <= string1 + size1) |
|
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|
500 |
|
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501 /* (Re)Allocate N items of type T using malloc, or fail. */ |
|
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|
502 #define TALLOC(n, t) ((t *) malloc ((n) * sizeof (t))) |
|
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503 #define RETALLOC(addr, n, t) ((addr) = (t *) realloc (addr, (n) * sizeof (t))) |
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504 #define RETALLOC_IF(addr, n, t) \ |
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505 if (addr) RETALLOC((addr), (n), t); else (addr) = TALLOC ((n), t) |
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506 #define REGEX_TALLOC(n, t) ((t *) REGEX_ALLOCATE ((n) * sizeof (t))) |
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507 |
|
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508 #define BYTEWIDTH 8 /* In bits. */ |
|
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509 |
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510 #define STREQ(s1, s2) ((strcmp (s1, s2) == 0)) |
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511 |
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512 #undef MAX |
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513 #undef MIN |
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514 #define MAX(a, b) ((a) > (b) ? (a) : (b)) |
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515 #define MIN(a, b) ((a) < (b) ? (a) : (b)) |
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516 |
|
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517 /* Type of source-pattern and string chars. */ |
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518 typedef const unsigned char re_char; |
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519 |
|
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520 typedef char boolean; |
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521 #define false 0 |
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522 #define true 1 |
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523 |
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524 static int re_match_2_internal _RE_ARGS ((struct re_pattern_buffer *bufp, |
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525 re_char *string1, int size1, |
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526 re_char *string2, int size2, |
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527 int pos, |
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528 struct re_registers *regs, |
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529 int stop)); |
|
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530 |
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531 /* These are the command codes that appear in compiled regular |
|
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532 expressions. Some opcodes are followed by argument bytes. A |
|
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533 command code can specify any interpretation whatsoever for its |
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534 arguments. Zero bytes may appear in the compiled regular expression. */ |
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535 |
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536 typedef enum |
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537 { |
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538 no_op = 0, |
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539 |
|
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540 /* Succeed right away--no more backtracking. */ |
|
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541 succeed, |
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542 |
| 941 | 543 /* Followed by one byte giving n, then by n literal bytes. */ |
|
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544 exactn, |
|
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|
545 |
| 941 | 546 /* Matches any (more or less) character. */ |
|
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547 anychar, |
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548 |
| 941 | 549 /* Matches any one char belonging to specified set. First |
| 550 following byte is number of bitmap bytes. Then come bytes | |
| 551 for a bitmap saying which chars are in. Bits in each byte | |
| 552 are ordered low-bit-first. A character is in the set if its | |
| 553 bit is 1. A character too large to have a bit in the map is | |
|
1933
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
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|
554 automatically not in the set. |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
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|
555 |
|
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556 If the length byte has the 0x80 bit set, then that stuff |
|
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557 is followed by a range table: |
|
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558 2 bytes of flags for character sets (low 8 bits, high 8 bits) |
|
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559 See RANGE_TABLE_WORK_BITS below. |
|
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|
560 2 bytes, the number of pairs that follow |
|
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561 pairs, each 2 multibyte characters, |
|
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562 each multibyte character represented as 3 bytes. */ |
|
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563 charset, |
|
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564 |
| 941 | 565 /* Same parameters as charset, but match any character that is |
|
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566 not one of those specified. */ |
|
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567 charset_not, |
|
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diff
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|
568 |
| 941 | 569 /* Start remembering the text that is matched, for storing in a |
| 570 register. Followed by one byte with the register number, in | |
| 571 the range 0 to one less than the pattern buffer's re_nsub | |
|
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572 field. */ |
|
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573 start_memory, |
|
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574 |
| 941 | 575 /* Stop remembering the text that is matched and store it in a |
| 576 memory register. Followed by one byte with the register | |
| 577 number, in the range 0 to one less than `re_nsub' in the | |
|
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578 pattern buffer. */ |
|
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579 stop_memory, |
|
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580 |
| 941 | 581 /* Match a duplicate of something remembered. Followed by one |
|
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582 byte containing the register number. */ |
|
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583 duplicate, |
|
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584 |
| 941 | 585 /* Fail unless at beginning of line. */ |
|
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|
586 begline, |
|
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|
587 |
|
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|
588 /* Fail unless at end of line. */ |
|
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diff
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|
589 endline, |
|
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|
590 |
| 941 | 591 /* Succeeds if at beginning of buffer (if emacs) or at beginning |
| 592 of string to be matched (if not). */ | |
|
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|
593 begbuf, |
|
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594 |
| 941 | 595 /* Analogously, for end of buffer/string. */ |
|
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|
596 endbuf, |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
597 |
| 941 | 598 /* Followed by two byte relative address to which to jump. */ |
|
515
69ba3b63e1d1
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parents:
511
diff
changeset
|
599 jump, |
|
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|
600 |
| 941 | 601 /* Followed by two-byte relative address of place to resume at |
| 602 in case of failure. */ | |
|
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diff
changeset
|
603 on_failure_jump, |
|
515
69ba3b63e1d1
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Roland McGrath <roland@gnu.org>
parents:
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diff
changeset
|
604 |
| 941 | 605 /* Like on_failure_jump, but pushes a placeholder instead of the |
| 606 current string position when executed. */ | |
|
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|
607 on_failure_keep_string_jump, |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
608 |
|
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|
609 /* Just like `on_failure_jump', except that it checks that we |
|
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|
610 don't get stuck in an infinite loop (matching an empty string |
|
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|
611 indefinitely). */ |
|
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|
612 on_failure_jump_loop, |
|
93d6633849d6
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|
613 |
|
2370
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|
614 /* Just like `on_failure_jump_loop', except that it checks for |
|
d8ded9c0e20c
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615 a different kind of loop (the kind that shows up with non-greedy |
|
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|
616 operators). This operation has to be immediately preceded |
|
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|
617 by a `no_op'. */ |
|
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|
618 on_failure_jump_nastyloop, |
|
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|
619 |
|
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620 /* A smart `on_failure_jump' used for greedy * and + operators. |
|
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|
621 It analyses the loop before which it is put and if the |
|
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|
622 loop does not require backtracking, it changes itself to |
|
2355
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|
623 `on_failure_keep_string_jump' and short-circuits the loop, |
|
0786b40fdf1c
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624 else it just defaults to changing itself into `on_failure_jump'. |
|
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625 It assumes that it is pointing to just past a `jump'. */ |
|
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626 on_failure_jump_smart, |
|
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627 |
| 941 | 628 /* Followed by two-byte relative address and two-byte number n. |
|
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629 After matching N times, jump to the address upon failure. |
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630 Does not work if N starts at 0: use on_failure_jump_loop |
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631 instead. */ |
|
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632 succeed_n, |
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633 |
| 941 | 634 /* Followed by two-byte relative address, and two-byte number n. |
| 635 Jump to the address N times, then fail. */ | |
|
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636 jump_n, |
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637 |
| 941 | 638 /* Set the following two-byte relative address to the |
| 639 subsequent two-byte number. The address *includes* the two | |
| 640 bytes of number. */ | |
|
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641 set_number_at, |
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642 |
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643 wordbeg, /* Succeeds if at word beginning. */ |
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644 wordend, /* Succeeds if at word end. */ |
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645 |
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646 wordbound, /* Succeeds if at a word boundary. */ |
|
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647 notwordbound, /* Succeeds if not at a word boundary. */ |
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648 |
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649 /* Matches any character whose syntax is specified. Followed by |
| 941 | 650 a byte which contains a syntax code, e.g., Sword. */ |
|
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651 syntaxspec, |
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652 |
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653 /* Matches any character whose syntax is not that specified. */ |
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654 notsyntaxspec |
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655 |
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656 #ifdef emacs |
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657 ,before_dot, /* Succeeds if before point. */ |
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658 at_dot, /* Succeeds if at point. */ |
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659 after_dot, /* Succeeds if after point. */ |
| 939 | 660 |
| 661 /* Matches any character whose category-set contains the specified | |
| 941 | 662 category. The operator is followed by a byte which contains a |
| 663 category code (mnemonic ASCII character). */ | |
| 939 | 664 categoryspec, |
| 665 | |
| 666 /* Matches any character whose category-set does not contain the | |
| 667 specified category. The operator is followed by a byte which | |
| 668 contains the category code (mnemonic ASCII character). */ | |
| 669 notcategoryspec | |
|
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670 #endif /* emacs */ |
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671 } re_opcode_t; |
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672 |
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673 /* Common operations on the compiled pattern. */ |
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674 |
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675 /* Store NUMBER in two contiguous bytes starting at DESTINATION. */ |
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676 |
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677 #define STORE_NUMBER(destination, number) \ |
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678 do { \ |
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679 (destination)[0] = (number) & 0377; \ |
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680 (destination)[1] = (number) >> 8; \ |
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681 } while (0) |
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682 |
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683 /* Same as STORE_NUMBER, except increment DESTINATION to |
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684 the byte after where the number is stored. Therefore, DESTINATION |
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685 must be an lvalue. */ |
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686 |
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687 #define STORE_NUMBER_AND_INCR(destination, number) \ |
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688 do { \ |
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689 STORE_NUMBER (destination, number); \ |
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690 (destination) += 2; \ |
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691 } while (0) |
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692 |
|
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693 /* Put into DESTINATION a number stored in two contiguous bytes starting |
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694 at SOURCE. */ |
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695 |
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696 #define EXTRACT_NUMBER(destination, source) \ |
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697 do { \ |
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698 (destination) = *(source) & 0377; \ |
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699 (destination) += SIGN_EXTEND_CHAR (*((source) + 1)) << 8; \ |
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700 } while (0) |
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701 |
|
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702 #ifdef DEBUG |
|
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703 static void extract_number _RE_ARGS ((int *dest, re_char *source)); |
|
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704 static void |
|
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705 extract_number (dest, source) |
|
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706 int *dest; |
|
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707 unsigned char *source; |
|
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708 { |
|
515
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709 int temp = SIGN_EXTEND_CHAR (*(source + 1)); |
|
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710 *dest = *source & 0377; |
|
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711 *dest += temp << 8; |
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712 } |
|
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|
713 |
|
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714 # ifndef EXTRACT_MACROS /* To debug the macros. */ |
|
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|
715 # undef EXTRACT_NUMBER |
|
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716 # define EXTRACT_NUMBER(dest, src) extract_number (&dest, src) |
|
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717 # endif /* not EXTRACT_MACROS */ |
|
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718 |
|
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719 #endif /* DEBUG */ |
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720 |
|
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721 /* Same as EXTRACT_NUMBER, except increment SOURCE to after the number. |
|
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722 SOURCE must be an lvalue. */ |
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|
723 |
|
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724 #define EXTRACT_NUMBER_AND_INCR(destination, source) \ |
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725 do { \ |
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|
726 EXTRACT_NUMBER (destination, source); \ |
| 941 | 727 (source) += 2; \ |
|
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728 } while (0) |
|
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|
729 |
|
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|
730 #ifdef DEBUG |
|
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731 static void extract_number_and_incr _RE_ARGS ((int *destination, |
|
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732 re_char **source)); |
|
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733 static void |
|
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734 extract_number_and_incr (destination, source) |
|
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735 int *destination; |
|
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|
736 unsigned char **source; |
|
515
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|
737 { |
|
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|
738 extract_number (destination, *source); |
|
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|
739 *source += 2; |
|
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740 } |
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741 |
|
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|
742 # ifndef EXTRACT_MACROS |
|
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743 # undef EXTRACT_NUMBER_AND_INCR |
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744 # define EXTRACT_NUMBER_AND_INCR(dest, src) \ |
|
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745 extract_number_and_incr (&dest, &src) |
|
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|
746 # endif /* not EXTRACT_MACROS */ |
|
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747 |
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748 #endif /* DEBUG */ |
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749 |
| 939 | 750 /* Store a multibyte character in three contiguous bytes starting |
| 751 DESTINATION, and increment DESTINATION to the byte after where the | |
| 941 | 752 character is stored. Therefore, DESTINATION must be an lvalue. */ |
| 939 | 753 |
| 754 #define STORE_CHARACTER_AND_INCR(destination, character) \ | |
| 755 do { \ | |
| 756 (destination)[0] = (character) & 0377; \ | |
| 757 (destination)[1] = ((character) >> 8) & 0377; \ | |
| 758 (destination)[2] = (character) >> 16; \ | |
| 759 (destination) += 3; \ | |
| 760 } while (0) | |
| 761 | |
| 762 /* Put into DESTINATION a character stored in three contiguous bytes | |
| 941 | 763 starting at SOURCE. */ |
| 939 | 764 |
| 765 #define EXTRACT_CHARACTER(destination, source) \ | |
| 766 do { \ | |
| 767 (destination) = ((source)[0] \ | |
| 768 | ((source)[1] << 8) \ | |
| 769 | ((source)[2] << 16)); \ | |
| 770 } while (0) | |
| 771 | |
| 772 | |
| 773 /* Macros for charset. */ | |
| 774 | |
| 775 /* Size of bitmap of charset P in bytes. P is a start of charset, | |
| 776 i.e. *P is (re_opcode_t) charset or (re_opcode_t) charset_not. */ | |
| 777 #define CHARSET_BITMAP_SIZE(p) ((p)[1] & 0x7F) | |
| 778 | |
| 779 /* Nonzero if charset P has range table. */ | |
| 941 | 780 #define CHARSET_RANGE_TABLE_EXISTS_P(p) ((p)[1] & 0x80) |
| 939 | 781 |
| 782 /* Return the address of range table of charset P. But not the start | |
| 783 of table itself, but the before where the number of ranges is | |
|
1933
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784 stored. `2 +' means to skip re_opcode_t and size of bitmap, |
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785 and the 2 bytes of flags at the start of the range table. */ |
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786 #define CHARSET_RANGE_TABLE(p) (&(p)[4 + CHARSET_BITMAP_SIZE (p)]) |
|
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|
787 |
|
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|
788 /* Extract the bit flags that start a range table. */ |
|
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|
789 #define CHARSET_RANGE_TABLE_BITS(p) \ |
|
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790 ((p)[2 + CHARSET_BITMAP_SIZE (p)] \ |
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|
791 + (p)[3 + CHARSET_BITMAP_SIZE (p)] * 0x100) |
| 939 | 792 |
| 793 /* Test if C is listed in the bitmap of charset P. */ | |
| 794 #define CHARSET_LOOKUP_BITMAP(p, c) \ | |
| 795 ((c) < CHARSET_BITMAP_SIZE (p) * BYTEWIDTH \ | |
| 796 && (p)[2 + (c) / BYTEWIDTH] & (1 << ((c) % BYTEWIDTH))) | |
| 797 | |
| 798 /* Return the address of end of RANGE_TABLE. COUNT is number of | |
| 941 | 799 ranges (which is a pair of (start, end)) in the RANGE_TABLE. `* 2' |
| 800 is start of range and end of range. `* 3' is size of each start | |
| 939 | 801 and end. */ |
| 802 #define CHARSET_RANGE_TABLE_END(range_table, count) \ | |
| 803 ((range_table) + (count) * 2 * 3) | |
| 804 | |
| 941 | 805 /* Test if C is in RANGE_TABLE. A flag NOT is negated if C is in. |
| 939 | 806 COUNT is number of ranges in RANGE_TABLE. */ |
| 807 #define CHARSET_LOOKUP_RANGE_TABLE_RAW(not, c, range_table, count) \ | |
| 808 do \ | |
| 809 { \ | |
| 810 int range_start, range_end; \ | |
| 811 unsigned char *p; \ | |
| 812 unsigned char *range_table_end \ | |
| 813 = CHARSET_RANGE_TABLE_END ((range_table), (count)); \ | |
| 814 \ | |
| 815 for (p = (range_table); p < range_table_end; p += 2 * 3) \ | |
| 816 { \ | |
| 817 EXTRACT_CHARACTER (range_start, p); \ | |
| 818 EXTRACT_CHARACTER (range_end, p + 3); \ | |
| 819 \ | |
| 820 if (range_start <= (c) && (c) <= range_end) \ | |
| 821 { \ | |
| 822 (not) = !(not); \ | |
| 823 break; \ | |
| 824 } \ | |
| 825 } \ | |
| 826 } \ | |
| 827 while (0) | |
| 828 | |
| 829 /* Test if C is in range table of CHARSET. The flag NOT is negated if | |
| 830 C is listed in it. */ | |
| 831 #define CHARSET_LOOKUP_RANGE_TABLE(not, c, charset) \ | |
| 832 do \ | |
| 833 { \ | |
| 834 /* Number of ranges in range table. */ \ | |
| 835 int count; \ | |
| 836 unsigned char *range_table = CHARSET_RANGE_TABLE (charset); \ | |
| 837 \ | |
| 838 EXTRACT_NUMBER_AND_INCR (count, range_table); \ | |
| 839 CHARSET_LOOKUP_RANGE_TABLE_RAW ((not), (c), range_table, count); \ | |
| 840 } \ | |
| 841 while (0) | |
| 842 | |
|
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843 /* If DEBUG is defined, Regex prints many voluminous messages about what |
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844 it is doing (if the variable `debug' is nonzero). If linked with the |
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845 main program in `iregex.c', you can enter patterns and strings |
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846 interactively. And if linked with the main program in `main.c' and |
|
2848
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847 the other test files, you can run the already-written tests. */ |
|
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848 |
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849 #ifdef DEBUG |
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850 |
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851 /* We use standard I/O for debugging. */ |
|
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852 # include <stdio.h> |
|
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853 |
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854 /* It is useful to test things that ``must'' be true when debugging. */ |
|
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855 # include <assert.h> |
|
441
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856 |
|
2350
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857 static int debug = -100000; |
|
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858 |
|
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859 # define DEBUG_STATEMENT(e) e |
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860 # define DEBUG_PRINT1(x) if (debug > 0) printf (x) |
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861 # define DEBUG_PRINT2(x1, x2) if (debug > 0) printf (x1, x2) |
|
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862 # define DEBUG_PRINT3(x1, x2, x3) if (debug > 0) printf (x1, x2, x3) |
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863 # define DEBUG_PRINT4(x1, x2, x3, x4) if (debug > 0) printf (x1, x2, x3, x4) |
|
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864 # define DEBUG_PRINT_COMPILED_PATTERN(p, s, e) \ |
|
2350
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865 if (debug > 0) print_partial_compiled_pattern (s, e) |
|
2841
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866 # define DEBUG_PRINT_DOUBLE_STRING(w, s1, sz1, s2, sz2) \ |
|
2350
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867 if (debug > 0) print_double_string (w, s1, sz1, s2, sz2) |
|
441
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868 |
|
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|
869 |
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870 /* Print the fastmap in human-readable form. */ |
|
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871 |
|
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872 void |
|
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873 print_fastmap (fastmap) |
|
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874 char *fastmap; |
|
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875 { |
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876 unsigned was_a_range = 0; |
|
515
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|
877 unsigned i = 0; |
|
69ba3b63e1d1
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|
878 |
|
441
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879 while (i < (1 << BYTEWIDTH)) |
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880 { |
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881 if (fastmap[i++]) |
|
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882 { |
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|
883 was_a_range = 0; |
| 941 | 884 putchar (i - 1); |
| 885 while (i < (1 << BYTEWIDTH) && fastmap[i]) | |
| 886 { | |
| 887 was_a_range = 1; | |
| 888 i++; | |
| 889 } | |
|
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890 if (was_a_range) |
| 941 | 891 { |
| 892 printf ("-"); | |
| 893 putchar (i - 1); | |
| 894 } | |
| 895 } | |
|
441
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896 } |
|
515
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parents:
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diff
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|
897 putchar ('\n'); |
|
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898 } |
|
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|
899 |
|
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|
900 |
|
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901 /* Print a compiled pattern string in human-readable form, starting at |
|
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902 the START pointer into it and ending just before the pointer END. */ |
|
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903 |
|
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904 void |
|
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905 print_partial_compiled_pattern (start, end) |
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906 unsigned char *start; |
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907 unsigned char *end; |
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908 { |
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909 int mcnt, mcnt2; |
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910 unsigned char *p = start; |
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911 unsigned char *pend = end; |
|
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|
912 |
|
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913 if (start == NULL) |
|
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914 { |
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|
915 printf ("(null)\n"); |
|
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|
916 return; |
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
917 } |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
918 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
919 /* 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
|
920 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
|
921 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
922 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
|
923 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
924 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
|
925 { |
| 941 | 926 case no_op: |
| 927 printf ("/no_op"); | |
| 928 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
|
929 |
|
2350
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
930 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
|
931 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
|
932 break; |
|
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
933 |
|
441
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 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
|
935 mcnt = *p++; |
| 941 | 936 printf ("/exactn/%d", mcnt); |
| 937 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
|
938 { |
| 941 | 939 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
|
940 putchar (*p++); |
| 941 | 941 } |
| 942 while (--mcnt); | |
| 943 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
|
944 |
|
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 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
|
946 printf ("/start_memory/%d", *p++); |
| 941 | 947 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
|
948 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
949 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
|
950 printf ("/stop_memory/%d", *p++); |
| 941 | 951 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
|
952 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
953 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
|
954 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
|
955 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
|
956 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
957 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
|
958 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
|
959 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
|
960 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
961 case charset: |
| 941 | 962 case charset_not: |
| 963 { | |
| 964 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
|
965 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
|
966 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
|
967 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
|
968 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
969 printf ("/charset [%s", |
| 941 | 970 (re_opcode_t) *(p - 1) == charset_not ? "^" : ""); |
| 971 | |
| 972 assert (p + *p < pend); | |
| 973 | |
| 974 for (c = 0; c < 256; c++) | |
|
1933
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
975 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
|
976 && (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
|
977 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
978 /* 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
|
979 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
|
980 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
981 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
|
982 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
|
983 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
984 /* 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
|
985 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
|
986 { |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
987 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
|
988 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
|
989 } |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
990 |
|
441
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 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
|
992 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
|
993 |
|
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 last = c; |
| 941 | 995 } |
|
441
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 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
|
998 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
|
999 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1000 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
|
1001 |
|
2350
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
1002 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
|
1003 |
|
1933
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
1004 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
|
1005 { |
|
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
1006 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
|
1007 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
|
1008 |
|
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
1009 /* ??? 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
|
1010 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
|
1011 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
|
1012 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
|
1013 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1014 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1015 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
|
1016 |
|
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 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
|
1018 printf ("/begline"); |
| 941 | 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 endline: |
| 941 | 1022 printf ("/endline"); |
| 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 on_failure_jump: |
| 941 | 1026 extract_number_and_incr (&mcnt, &p); |
| 1027 printf ("/on_failure_jump to %d", p + mcnt - start); | |
| 1028 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
|
1029 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1030 case on_failure_keep_string_jump: |
| 941 | 1031 extract_number_and_incr (&mcnt, &p); |
| 1032 printf ("/on_failure_keep_string_jump to %d", p + mcnt - start); | |
| 1033 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
|
1034 |
|
2370
d8ded9c0e20c
(enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2359
diff
changeset
|
1035 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
|
1036 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
|
1037 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
|
1038 break; |
|
d8ded9c0e20c
(enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2359
diff
changeset
|
1039 |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1040 case on_failure_jump_loop: |
| 941 | 1041 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
|
1042 printf ("/on_failure_jump_loop to %d", p + mcnt - start); |
| 941 | 1043 break; |
| 1044 | |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1045 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
|
1046 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
|
1047 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
|
1048 break; |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1049 |
| 941 | 1050 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
|
1051 extract_number_and_incr (&mcnt, &p); |
| 941 | 1052 printf ("/jump to %d", p + mcnt - start); |
| 679 | 1053 break; |
| 1054 | |
| 941 | 1055 case succeed_n: |
| 1056 extract_number_and_incr (&mcnt, &p); | |
| 1057 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
|
1058 printf ("/succeed_n to %d, %d times", p - 2 + mcnt - start, mcnt2); |
| 941 | 1059 break; |
| 1060 | |
| 1061 case jump_n: | |
| 1062 extract_number_and_incr (&mcnt, &p); | |
| 1063 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
|
1064 printf ("/jump_n to %d, %d times", p - 2 + mcnt - start, mcnt2); |
| 941 | 1065 break; |
| 1066 | |
| 1067 case set_number_at: | |
| 1068 extract_number_and_incr (&mcnt, &p); | |
| 1069 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
|
1070 printf ("/set_number_at location %d to %d", p - 2 + mcnt - start, mcnt2); |
| 941 | 1071 break; |
| 1072 | |
| 1073 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
|
1074 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
|
1075 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
|
1076 |
|
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 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
|
1078 printf ("/notwordbound"); |
| 941 | 1079 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
|
1080 |
|
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 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
|
1082 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
|
1083 break; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1084 |
|
441
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 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
|
1086 printf ("/wordend"); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1087 |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
1088 case syntaxspec: |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
1089 printf ("/syntaxspec"); |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
1090 mcnt = *p++; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
1091 printf ("/%d", mcnt); |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
1092 break; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
1093 |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
1094 case notsyntaxspec: |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
1095 printf ("/notsyntaxspec"); |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
1096 mcnt = *p++; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
1097 printf ("/%d", mcnt); |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
1098 break; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
1099 |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
1100 # ifdef 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
|
1101 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
|
1102 printf ("/before_dot"); |
| 941 | 1103 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
|
1104 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1105 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
|
1106 printf ("/at_dot"); |
| 941 | 1107 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
|
1108 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1109 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
|
1110 printf ("/after_dot"); |
| 941 | 1111 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
|
1112 |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
1113 case categoryspec: |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
1114 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
|
1115 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
|
1116 printf ("/%d", mcnt); |
| 941 | 1117 break; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1118 |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
1119 case notcategoryspec: |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
1120 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
|
1121 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
|
1122 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
|
1123 break; |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
1124 # endif /* 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
|
1125 |
|
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 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
|
1127 printf ("/begbuf"); |
| 941 | 1128 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
|
1129 |
|
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 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
|
1131 printf ("/endbuf"); |
| 941 | 1132 break; |
| 1133 | |
| 1134 default: | |
| 1135 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
|
1136 } |
|
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 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
|
1139 } |
|
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 |
|
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 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
|
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 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1144 |
|
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 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
|
1146 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
|
1147 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
|
1148 { |
|
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 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
|
1150 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1151 print_partial_compiled_pattern (buffer, buffer + bufp->used); |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1152 printf ("%ld bytes used/%ld bytes allocated.\n", |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1153 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
|
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 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
|
1156 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1157 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
|
1158 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
|
1159 } |
|
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 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
|
1162 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
|
1163 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
|
1164 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
|
1165 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
|
1166 printf ("not_eol: %d\t", bufp->not_eol); |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1167 printf ("syntax: %lx\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
|
1168 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
|
1169 /* 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
|
1170 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1171 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1172 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1173 void |
|
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|
1174 print_double_string (where, string1, size1, string2, size2) |
|
2349
5fa185a9956e
* regex.c: Declare a new type `re_char' used throughout the code for the
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parents:
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diff
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|
1175 re_char *where; |
|
5fa185a9956e
* regex.c: Declare a new type `re_char' used throughout the code for the
Stefan Monnier <monnier@iro.umontreal.ca>
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diff
changeset
|
1176 re_char *string1; |
|
5fa185a9956e
* regex.c: Declare a new type `re_char' used throughout the code for the
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diff
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|
1177 re_char *string2; |
|
441
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|
1178 int size1; |
|
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diff
changeset
|
1179 int size2; |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
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|
1180 { |
|
2848
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Merge some changes from GNU libc. Add prototypes.
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changeset
|
1181 int this_char; |
|
515
69ba3b63e1d1
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Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1182 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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parents:
438
diff
changeset
|
1183 if (where == NULL) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
changeset
|
1184 printf ("(null)"); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
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diff
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|
1185 else |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1186 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1187 if (FIRST_STRING_P (where)) |
| 941 | 1188 { |
| 1189 for (this_char = where - string1; this_char < size1; this_char++) | |
| 1190 putchar (string1[this_char]); | |
| 1191 | |
| 1192 where = string2; | |
| 1193 } | |
|
441
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 |
|
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 for (this_char = where - string2; this_char < size2; this_char++) |
| 941 | 1196 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>
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diff
changeset
|
1197 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
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|
1198 } |
|
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 |
|
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 #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
|
1201 |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
1202 # undef assert |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
1203 # define assert(e) |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
1204 |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
1205 # define DEBUG_STATEMENT(e) |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
1206 # define DEBUG_PRINT1(x) |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
1207 # define DEBUG_PRINT2(x1, x2) |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
1208 # define DEBUG_PRINT3(x1, x2, x3) |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
1209 # define DEBUG_PRINT4(x1, x2, x3, x4) |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
1210 # define DEBUG_PRINT_COMPILED_PATTERN(p, s, e) |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
1211 # define DEBUG_PRINT_DOUBLE_STRING(w, s1, sz1, s2, sz2) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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parents:
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diff
changeset
|
1212 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1213 #endif /* not DEBUG */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
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diff
changeset
|
1214 |
|
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 /* 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
|
1216 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
|
1217 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
|
1218 /* 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
|
1219 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
|
1220 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
|
1221 |
|
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 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1223 /* 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
|
1224 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
|
1225 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
|
1226 |
|
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 The argument SYNTAX is a bit mask comprised of the various bits |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1228 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
|
1229 |
|
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 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
|
1231 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
|
1232 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
|
1233 { |
|
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 reg_syntax_t ret = re_syntax_options; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1235 |
|
441
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 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
|
1237 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
|
1238 } |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
1239 WEAK_ALIAS (__re_set_syntax, re_set_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
|
1240 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1241 /* This table gives an error message for each of the error codes listed |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1242 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
|
1243 POSIX doesn't require that we do anything for REG_NOERROR, |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1244 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
|
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 static const char *re_error_msgid[] = |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1247 { |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1248 gettext_noop ("Success"), /* REG_NOERROR */ |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1249 gettext_noop ("No match"), /* REG_NOMATCH */ |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1250 gettext_noop ("Invalid regular expression"), /* REG_BADPAT */ |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1251 gettext_noop ("Invalid collation character"), /* REG_ECOLLATE */ |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1252 gettext_noop ("Invalid character class name"), /* REG_ECTYPE */ |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1253 gettext_noop ("Trailing backslash"), /* REG_EESCAPE */ |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1254 gettext_noop ("Invalid back reference"), /* REG_ESUBREG */ |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1255 gettext_noop ("Unmatched [ or [^"), /* REG_EBRACK */ |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1256 gettext_noop ("Unmatched ( or \\("), /* REG_EPAREN */ |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1257 gettext_noop ("Unmatched \\{"), /* REG_EBRACE */ |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1258 gettext_noop ("Invalid content of \\{\\}"), /* REG_BADBR */ |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1259 gettext_noop ("Invalid range end"), /* REG_ERANGE */ |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1260 gettext_noop ("Memory exhausted"), /* REG_ESPACE */ |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1261 gettext_noop ("Invalid preceding regular expression"), /* REG_BADRPT */ |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1262 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
|
1263 gettext_noop ("Regular expression too big"), /* REG_ESIZE */ |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1264 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
|
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 |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1267 /* 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
|
1268 |
|
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 /* 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
|
1270 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
|
1271 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
|
1272 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
|
1273 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
|
1274 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
|
1275 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
|
1276 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1277 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
|
1278 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
|
1279 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.
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|
1280 malloc, then we're scrod. But Emacs can't just block input while |
|
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|
1281 calling matching routines; then we don't notice interrupts when |
|
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Roland McGrath <roland@gnu.org>
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diff
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|
1282 they come in. So, Emacs blocks input around all regexp calls |
|
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diff
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|
1283 except the matching calls, which it leaves unprotected, in the |
|
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|
1284 faith that they will not malloc. */ |
|
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Roland McGrath <roland@gnu.org>
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|
1285 |
|
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|
1286 /* Normally, this is fine. */ |
|
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1287 #define MATCH_MAY_ALLOCATE |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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1288 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
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|
1289 /* When using GNU C, we are not REALLY using the C alloca, no matter |
|
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1290 what config.h may say. So don't take precautions for it. */ |
|
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|
1291 #ifdef __GNUC__ |
|
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|
1292 # undef C_ALLOCA |
|
441
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|
1293 #endif |
|
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diff
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|
1294 |
|
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diff
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|
1295 /* The match routines may not allocate if (1) they would do it with malloc |
|
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|
1296 and (2) it's not safe for them to use malloc. |
|
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diff
changeset
|
1297 Note that if REL_ALLOC is defined, matching would not use malloc for the |
|
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|
1298 failure stack, but we would still use it for the register vectors; |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
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|
1299 so REL_ALLOC should not affect this. */ |
|
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* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
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|
1300 #if (defined C_ALLOCA || defined REGEX_MALLOC) && defined emacs |
|
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* regex.c: Indent cpp directives and remove parens after `defined'.
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|
1301 # undef MATCH_MAY_ALLOCATE |
|
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|
1302 #endif |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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|
1303 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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|
1304 |
|
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Roland McGrath <roland@gnu.org>
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|
1305 /* Failure stack declarations and macros; both re_compile_fastmap and |
|
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diff
changeset
|
1306 re_match_2 use a failure stack. These have to be macros because of |
|
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Roland McGrath <roland@gnu.org>
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|
1307 REGEX_ALLOCATE_STACK. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
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|
1308 |
|
441
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438
diff
changeset
|
1309 |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1310 /* Approximate number of failure points for which to initially allocate space |
|
441
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Roland McGrath <roland@gnu.org>
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|
1311 when matching. If this number is exceeded, we allocate more |
|
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diff
changeset
|
1312 space, so it is not a hard limit. */ |
|
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|
1313 #ifndef INIT_FAILURE_ALLOC |
|
2841
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* regex.c: Indent cpp directives and remove parens after `defined'.
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changeset
|
1314 # define INIT_FAILURE_ALLOC 20 |
|
441
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|
1315 #endif |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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|
1316 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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changeset
|
1317 /* 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:
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changeset
|
1318 exactly that if always used TYPICAL_FAILURE_SIZE items each time we failed. |
|
441
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changeset
|
1319 This is a variable only so users of regex can assign to it; we never |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
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|
1320 change it ourselves. */ |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
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diff
changeset
|
1321 # if defined MATCH_MAY_ALLOCATE |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
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diff
changeset
|
1322 /* Note that 4400 was enough to cause a crash on Alpha OSF/1, |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1323 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
|
1324 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:
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diff
changeset
|
1325 with the process stack limit. */ |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
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changeset
|
1326 size_t re_max_failures = 40000; |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
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diff
changeset
|
1327 # else |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
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2848
diff
changeset
|
1328 size_t re_max_failures = 4000; |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1329 # endif |
|
441
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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|
1330 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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changeset
|
1331 union fail_stack_elt |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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|
1332 { |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
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diff
changeset
|
1333 const unsigned char *pointer; |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
1334 /* This should be the biggest `int' that's no bigger than a pointer. */ |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
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2848
diff
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|
1335 long integer; |
|
441
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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changeset
|
1336 }; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1337 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1338 typedef union fail_stack_elt fail_stack_elt_t; |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1339 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1340 typedef struct |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1341 { |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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changeset
|
1342 fail_stack_elt_t *stack; |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
1343 size_t size; |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
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|
1344 size_t avail; /* Offset of next open position. */ |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
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diff
changeset
|
1345 size_t frame; /* Offset of the cur constructed frame. */ |
|
441
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Roland McGrath <roland@gnu.org>
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changeset
|
1346 } fail_stack_type; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
changeset
|
1347 |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
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diff
changeset
|
1348 #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>
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diff
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|
1349 #define FAIL_STACK_EMPTY() (fail_stack.frame == 0) |
|
441
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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|
1350 #define FAIL_STACK_FULL() (fail_stack.avail == fail_stack.size) |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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changeset
|
1351 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
changeset
|
1352 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
changeset
|
1353 /* Define macros to initialize and free the failure stack. |
|
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changeset
|
1354 Do `return -2' if the alloc fails. */ |
|
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diff
changeset
|
1355 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1356 #ifdef MATCH_MAY_ALLOCATE |
|
2841
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* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
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|
1357 # define INIT_FAIL_STACK() \ |
|
441
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|
1358 do { \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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changeset
|
1359 fail_stack.stack = (fail_stack_elt_t *) \ |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
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diff
changeset
|
1360 REGEX_ALLOCATE_STACK (INIT_FAILURE_ALLOC * TYPICAL_FAILURE_SIZE \ |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
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changeset
|
1361 * sizeof (fail_stack_elt_t)); \ |
|
441
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|
1362 \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
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|
1363 if (fail_stack.stack == NULL) \ |
|
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|
1364 return -2; \ |
|
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|
1365 \ |
|
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changeset
|
1366 fail_stack.size = INIT_FAILURE_ALLOC; \ |
|
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changeset
|
1367 fail_stack.avail = 0; \ |
|
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This is a big redesign of failure-stack and register handling, prompted
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|
1368 fail_stack.frame = 0; \ |
|
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|
1369 } while (0) |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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changeset
|
1370 |
|
2841
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* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
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|
1371 # define RESET_FAIL_STACK() REGEX_FREE_STACK (fail_stack.stack) |
|
441
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changeset
|
1372 #else |
|
2841
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* regex.c: Indent cpp directives and remove parens after `defined'.
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|
1373 # define INIT_FAIL_STACK() \ |
|
441
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|
1374 do { \ |
|
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|
1375 fail_stack.avail = 0; \ |
|
2345
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This is a big redesign of failure-stack and register handling, prompted
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|
1376 fail_stack.frame = 0; \ |
|
441
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|
1377 } 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
|
1378 |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
1379 # 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
|
1380 #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
|
1381 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1382 |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1383 /* 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
|
1384 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
|
1385 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1386 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
|
1387 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
|
1388 |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1389 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
|
1390 |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1391 /* 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
|
1392 when we increase it. |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1393 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
|
1394 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
|
1395 were as ultimate, maximum-size stack. */ |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1396 #define FAIL_STACK_GROWTH_FACTOR 4 |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1397 |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1398 #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
|
1399 (((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
|
1400 >= 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
|
1401 ? 0 \ |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1402 : ((fail_stack).stack \ |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1403 = (fail_stack_elt_t *) \ |
| 941 | 1404 REGEX_REALLOCATE_STACK ((fail_stack).stack, \ |
| 1405 (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
|
1406 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
|
1407 ((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
|
1408 * 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
|
1409 \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1410 (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
|
1411 ? 0 \ |
|
1157
5aa89bba935d
(GROW_FAIL_STACK): Fix previous change:
Karl Heuer <kwzh@gnu.org>
parents:
1156
diff
changeset
|
1412 : ((fail_stack).size \ |
|
5aa89bba935d
(GROW_FAIL_STACK): Fix previous change:
Karl Heuer <kwzh@gnu.org>
parents:
1156
diff
changeset
|
1413 = (MIN (re_max_failures * TYPICAL_FAILURE_SIZE, \ |
|
5aa89bba935d
(GROW_FAIL_STACK): Fix previous change:
Karl Heuer <kwzh@gnu.org>
parents:
1156
diff
changeset
|
1414 ((fail_stack).size * sizeof (fail_stack_elt_t) \ |
|
5aa89bba935d
(GROW_FAIL_STACK): Fix previous change:
Karl Heuer <kwzh@gnu.org>
parents:
1156
diff
changeset
|
1415 * FAIL_STACK_GROWTH_FACTOR)) \ |
|
5aa89bba935d
(GROW_FAIL_STACK): Fix previous change:
Karl Heuer <kwzh@gnu.org>
parents:
1156
diff
changeset
|
1416 / sizeof (fail_stack_elt_t)), \ |
| 941 | 1417 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
|
1418 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1419 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1420 /* 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
|
1421 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
|
1422 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
|
1423 #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
|
1424 ((FAIL_STACK_FULL () \ |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1425 && !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
|
1426 ? 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
|
1427 : ((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
|
1428 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
|
1429 #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
|
1430 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1431 /* 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
|
1432 Assumes the variable `fail_stack'. Probably should only |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1433 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
|
1434 #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
|
1435 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
|
1436 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1437 /* 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
|
1438 Assumes the variable `fail_stack'. Probably should only |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1439 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
|
1440 #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
|
1441 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
|
1442 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1443 /* 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
|
1444 Assumes the variable `fail_stack'. Probably should only |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1445 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
|
1446 #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
|
1447 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
|
1448 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1449 /* 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
|
1450 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
|
1451 #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
|
1452 #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
|
1453 #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
|
1454 |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1455 /* 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
|
1456 #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
|
1457 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1458 /* 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
|
1459 #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
|
1460 #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
|
1461 #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
|
1462 #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
|
1463 |
|
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 #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
|
1466 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
|
1467 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
|
1468 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
|
1469 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
|
1470 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
|
1471 } |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1472 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1473 /* 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
|
1474 #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
|
1475 do { \ |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1476 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
|
1477 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
|
1478 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
|
1479 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
|
1480 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
|
1481 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
|
1482 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
|
1483 } 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
|
1484 |
|
2828
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1485 #define PUSH_FAILURE_COUNT(ptr) \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1486 do { \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1487 char *destination; \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1488 int c; \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1489 ENSURE_FAIL_STACK(3); \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1490 EXTRACT_NUMBER (c, ptr); \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1491 DEBUG_PRINT3 (" Push counter %p = %d\n", ptr, c); \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1492 PUSH_FAILURE_INT (c); \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1493 PUSH_FAILURE_POINTER (ptr); \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1494 PUSH_FAILURE_INT (-1); \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1495 } while (0) |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1496 |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1497 /* Pop a saved register off the stack. */ |
|
2828
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1498 #define POP_FAILURE_REG_OR_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
|
1499 do { \ |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1500 int reg = POP_FAILURE_INT (); \ |
|
2828
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1501 if (reg == -1) \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1502 { \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1503 /* It's a counter. */ \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1504 unsigned char *ptr = (unsigned char*) POP_FAILURE_POINTER (); \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1505 reg = POP_FAILURE_INT (); \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1506 STORE_NUMBER (ptr, reg); \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1507 DEBUG_PRINT3 (" Pop counter %p = %d\n", ptr, reg); \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1508 } \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1509 else \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1510 { \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1511 regend[reg] = POP_FAILURE_POINTER (); \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1512 regstart[reg] = POP_FAILURE_POINTER (); \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1513 DEBUG_PRINT4 (" Pop reg %d (spanning %p -> %p)\n", \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1514 reg, regstart[reg], regend[reg]); \ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1515 } \ |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1516 } 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
|
1517 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1518 /* 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
|
1519 #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
|
1520 do { \ |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1521 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
|
1522 /* 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
|
1523 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
|
1524 (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
|
1525 || 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
|
1526 { \ |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1527 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
|
1528 && 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
|
1529 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
|
1530 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
|
1531 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
|
1532 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
|
1533 } \ |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1534 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
|
1535 } 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
|
1536 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1537 /* 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
|
1538 if we ever fail back to it. |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1539 |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1540 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
|
1541 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
|
1542 declared. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1543 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1544 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
|
1545 |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1546 #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
|
1547 do { \ |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1548 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
|
1549 /* 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
|
1550 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
|
1551 \ |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1552 DEBUG_STATEMENT (nfailure_points_pushed++); \ |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1553 DEBUG_PRINT1 ("\nPUSH_FAILURE_POINT:\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
|
1554 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
|
1555 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
|
1556 \ |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1557 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
|
1558 \ |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1559 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
|
1560 \ |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1561 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
|
1562 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
|
1563 \ |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1564 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
|
1565 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
|
1566 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
|
1567 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
|
1568 \ |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1569 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
|
1570 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
|
1571 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
|
1572 \ |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1573 /* 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
|
1574 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
|
1575 } 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
|
1576 |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1577 /* 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
|
1578 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
|
1579 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
|
1580 |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1581 #define TYPICAL_FAILURE_SIZE 20 |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1582 |
|
441
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 /* 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
|
1584 #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
|
1585 |
|
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 /* 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
|
1588 |
|
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 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
|
1590 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
|
1591 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
|
1592 REGSTART, REGEND -- arrays of string positions. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1593 |
|
441
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 Also assumes the variables `fail_stack' and (if debugging), `bufp', |
| 941 | 1595 `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
|
1596 |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1597 #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
|
1598 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
|
1599 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
|
1600 \ |
|
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 /* 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
|
1602 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
|
1603 DEBUG_PRINT2 (" Before pop, next avail: %d\n", fail_stack.avail); \ |
| 941 | 1604 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
|
1605 \ |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1606 /* 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
|
1607 while (fail_stack.frame < fail_stack.avail) \ |
|
2828
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
1608 POP_FAILURE_REG_OR_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
|
1609 \ |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1610 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
|
1611 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
|
1612 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
|
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 /* 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
|
1615 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
|
1616 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
|
1617 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
|
1618 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
|
1619 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
|
1620 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
|
1621 \ |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1622 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
|
1623 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
|
1624 \ |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
1625 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
|
1626 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
|
1627 \ |
|
441
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 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
|
1629 } 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
|
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 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1633 /* Registers are set to a sentinel when they haven't yet matched. */ |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1634 #define REG_UNSET(e) ((e) == 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
|
1635 |
|
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 /* 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
|
1637 |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1638 static reg_errcode_t regex_compile _RE_ARGS ((re_char *pattern, size_t size, |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1639 reg_syntax_t syntax, |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1640 struct re_pattern_buffer *bufp)); |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1641 static void store_op1 _RE_ARGS ((re_opcode_t op, unsigned char *loc, int arg)); |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1642 static void store_op2 _RE_ARGS ((re_opcode_t op, unsigned char *loc, |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1643 int arg1, int arg2)); |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1644 static void insert_op1 _RE_ARGS ((re_opcode_t op, unsigned char *loc, |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1645 int arg, unsigned char *end)); |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1646 static void insert_op2 _RE_ARGS ((re_opcode_t op, unsigned char *loc, |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1647 int arg1, int arg2, unsigned char *end)); |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1648 static boolean at_begline_loc_p _RE_ARGS ((const unsigned char *pattern, |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1649 const unsigned char *p, |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1650 reg_syntax_t syntax)); |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1651 static boolean at_endline_loc_p _RE_ARGS ((const unsigned char *p, |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1652 const unsigned char *pend, |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1653 reg_syntax_t syntax)); |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1654 static unsigned char *skip_one_char _RE_ARGS ((unsigned char *p)); |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1655 static int analyse_first _RE_ARGS ((unsigned char *p, unsigned char *pend, |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1656 char *fastmap, const int 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
|
1657 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1658 /* 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
|
1659 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
|
1660 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
|
1661 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
|
1662 #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
|
1663 do { \ |
|
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
1664 PATFETCH_RAW (c); \ |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
1665 c = 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
|
1666 } 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
|
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 /* Fetch the next character in the uncompiled pattern, with no |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1669 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
|
1670 #define PATFETCH_RAW(c) \ |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
1671 do { \ |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
1672 int len; \ |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
1673 if (p == pend) return REG_EEND; \ |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
1674 c = RE_STRING_CHAR_AND_LENGTH (p, pend - p, len); \ |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
1675 p += 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
|
1676 } 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
|
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 |
|
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 /* 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
|
1680 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
|
1681 `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
|
1682 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
|
1683 #ifndef TRANSLATE |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
1684 # 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
|
1685 (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
|
1686 #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
|
1687 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1688 |
|
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 /* 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
|
1690 |
|
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 /* 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
|
1692 #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
|
1693 |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1694 /* 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
|
1695 #define GET_BUFFER_SPACE(n) \ |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1696 while ((unsigned long) (b - bufp->buffer + (n)) > 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
|
1697 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
|
1698 |
|
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 /* 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
|
1700 #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
|
1701 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
|
1702 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
|
1703 *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
|
1704 } 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
|
1705 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1706 |
|
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 /* 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
|
1708 #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
|
1709 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
|
1710 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
|
1711 *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
|
1712 *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
|
1713 } 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
|
1714 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1715 |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1716 /* 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
|
1717 #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
|
1718 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
|
1719 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
|
1720 *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
|
1721 *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
|
1722 *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
|
1723 } 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
|
1724 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1725 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1726 /* Store a jump with opcode OP at LOC to location TO. We store a |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1727 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
|
1728 #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
|
1729 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
|
1730 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1731 /* 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
|
1732 #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
|
1733 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
|
1734 |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1735 /* 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
|
1736 #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
|
1737 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
|
1738 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1739 /* 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
|
1740 #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
|
1741 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
|
1742 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1743 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1744 /* This is not an arbitrary limit: the arguments which represent offsets |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1745 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
|
1746 be too small, many things would have to change. */ |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1747 /* Any other compiler which, like MSC, has allocation limit below 2^16 |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1748 bytes will have to use approach similar to what was done below for |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1749 MSC and drop MAX_BUF_SIZE a bit. Otherwise you may end up |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1750 reallocating to 0 bytes. Such thing is not going to work too well. |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1751 You have been warned!! */ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1752 #if defined _MSC_VER && !defined WIN32 |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1753 /* Microsoft C 16-bit versions limit malloc to approx 65512 bytes. */ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1754 # define MAX_BUF_SIZE 65500L |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1755 #else |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1756 # define MAX_BUF_SIZE (1L << 16) |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1757 #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
|
1758 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1759 /* 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
|
1760 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
|
1761 correct places in the new one. If extending the buffer results in it |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1762 being larger than MAX_BUF_SIZE, then flag memory exhausted. */ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1763 #if __BOUNDED_POINTERS__ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1764 # define SET_HIGH_BOUND(P) (__ptrhigh (P) = __ptrlow (P) + bufp->allocated) |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1765 # define MOVE_BUFFER_POINTER(P) \ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1766 (__ptrlow (P) += incr, SET_HIGH_BOUND (P), __ptrvalue (P) += incr) |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1767 # define ELSE_EXTEND_BUFFER_HIGH_BOUND \ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1768 else \ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1769 { \ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1770 SET_HIGH_BOUND (b); \ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1771 SET_HIGH_BOUND (begalt); \ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1772 if (fixup_alt_jump) \ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1773 SET_HIGH_BOUND (fixup_alt_jump); \ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1774 if (laststart) \ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1775 SET_HIGH_BOUND (laststart); \ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1776 if (pending_exact) \ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1777 SET_HIGH_BOUND (pending_exact); \ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1778 } |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1779 #else |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1780 # define MOVE_BUFFER_POINTER(P) (P) += incr |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
1781 # define ELSE_EXTEND_BUFFER_HIGH_BOUND |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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1782 #endif |
|
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1783 #define EXTEND_BUFFER() \ |
| 941 | 1784 do { \ |
|
441
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1785 unsigned char *old_buffer = bufp->buffer; \ |
| 941 | 1786 if (bufp->allocated == MAX_BUF_SIZE) \ |
|
441
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|
1787 return REG_ESIZE; \ |
|
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|
1788 bufp->allocated <<= 1; \ |
|
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|
1789 if (bufp->allocated > MAX_BUF_SIZE) \ |
| 941 | 1790 bufp->allocated = MAX_BUF_SIZE; \ |
|
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|
1791 bufp->buffer = (unsigned char *) realloc (bufp->buffer, bufp->allocated);\ |
|
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|
1792 if (bufp->buffer == NULL) \ |
|
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1793 return REG_ESPACE; \ |
|
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|
1794 /* If the buffer moved, move all the pointers into it. */ \ |
|
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|
1795 if (old_buffer != bufp->buffer) \ |
|
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|
1796 { \ |
|
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Merge some changes from GNU libc. Add prototypes.
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|
1797 int incr = bufp->buffer - old_buffer; \ |
|
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Merge some changes from GNU libc. Add prototypes.
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|
1798 MOVE_BUFFER_POINTER (b); \ |
|
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Merge some changes from GNU libc. Add prototypes.
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|
1799 MOVE_BUFFER_POINTER (begalt); \ |
| 941 | 1800 if (fixup_alt_jump) \ |
|
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|
1801 MOVE_BUFFER_POINTER (fixup_alt_jump); \ |
| 941 | 1802 if (laststart) \ |
|
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|
1803 MOVE_BUFFER_POINTER (laststart); \ |
| 941 | 1804 if (pending_exact) \ |
|
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|
1805 MOVE_BUFFER_POINTER (pending_exact); \ |
|
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|
1806 } \ |
|
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1807 ELSE_EXTEND_BUFFER_HIGH_BOUND \ |
|
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1808 } while (0) |
|
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1809 |
|
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1810 |
|
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1811 /* Since we have one byte reserved for the register number argument to |
|
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1812 {start,stop}_memory, the maximum number of groups we can report |
|
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|
1813 things about is what fits in that byte. */ |
|
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|
1814 #define MAX_REGNUM 255 |
|
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1815 |
|
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1816 /* But patterns can have more than `MAX_REGNUM' registers. We just |
|
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1817 ignore the excess. */ |
|
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1818 typedef unsigned regnum_t; |
|
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1819 |
|
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1820 |
|
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1821 /* Macros for the compile stack. */ |
|
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1822 |
|
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1823 /* Since offsets can go either forwards or backwards, this type needs to |
|
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1824 be able to hold values from -(MAX_BUF_SIZE - 1) to MAX_BUF_SIZE - 1. */ |
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1825 /* int may be not enough when sizeof(int) == 2. */ |
|
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1826 typedef long pattern_offset_t; |
|
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1827 |
|
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1828 typedef struct |
|
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1829 { |
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1830 pattern_offset_t begalt_offset; |
|
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1831 pattern_offset_t fixup_alt_jump; |
|
515
69ba3b63e1d1
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|
1832 pattern_offset_t laststart_offset; |
|
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1833 regnum_t regnum; |
|
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1834 } compile_stack_elt_t; |
|
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1835 |
|
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1836 |
|
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1837 typedef struct |
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1838 { |
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|
1839 compile_stack_elt_t *stack; |
|
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1840 unsigned size; |
|
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1841 unsigned avail; /* Offset of next open position. */ |
|
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1842 } compile_stack_type; |
|
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1843 |
|
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1844 |
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1845 #define INIT_COMPILE_STACK_SIZE 32 |
|
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1846 |
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1847 #define COMPILE_STACK_EMPTY (compile_stack.avail == 0) |
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1848 #define COMPILE_STACK_FULL (compile_stack.avail == compile_stack.size) |
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1849 |
|
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1850 /* The next available element. */ |
|
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1851 #define COMPILE_STACK_TOP (compile_stack.stack[compile_stack.avail]) |
|
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1852 |
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1853 |
| 939 | 1854 /* Structure to manage work area for range table. */ |
| 1855 struct range_table_work_area | |
| 1856 { | |
| 1857 int *table; /* actual work area. */ | |
| 1858 int allocated; /* allocated size for work area in bytes. */ | |
| 941 | 1859 int used; /* actually used size in words. */ |
|
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|
1860 int bits; /* flag to record character classes */ |
| 939 | 1861 }; |
| 1862 | |
| 1863 /* Make sure that WORK_AREA can hold more N multibyte characters. */ | |
| 1864 #define EXTEND_RANGE_TABLE_WORK_AREA(work_area, n) \ | |
| 1865 do { \ | |
| 1866 if (((work_area).used + (n)) * sizeof (int) > (work_area).allocated) \ | |
| 1867 { \ | |
| 1868 (work_area).allocated += 16 * sizeof (int); \ | |
| 1869 if ((work_area).table) \ | |
| 1870 (work_area).table \ | |
| 1871 = (int *) realloc ((work_area).table, (work_area).allocated); \ | |
| 1872 else \ | |
| 1873 (work_area).table \ | |
| 1874 = (int *) malloc ((work_area).allocated); \ | |
| 1875 if ((work_area).table == 0) \ | |
| 1876 FREE_STACK_RETURN (REG_ESPACE); \ | |
| 1877 } \ | |
| 1878 } while (0) | |
| 1879 | |
|
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1880 #define SET_RANGE_TABLE_WORK_AREA_BIT(work_area, bit) \ |
|
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1881 (work_area).bits |= (bit) |
|
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|
1882 |
|
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1883 /* Bits used to implement the multibyte-part of the various character classes |
|
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1884 such as [:alnum:] in a charset's range table. */ |
|
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1885 #define BIT_WORD 0x1 |
|
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1886 #define BIT_LOWER 0x2 |
|
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1887 #define BIT_PUNCT 0x4 |
|
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1888 #define BIT_SPACE 0x8 |
|
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1889 #define BIT_UPPER 0x10 |
|
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1890 #define BIT_MULTIBYTE 0x20 |
|
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|
1891 |
| 939 | 1892 /* Set a range (RANGE_START, RANGE_END) to WORK_AREA. */ |
| 1893 #define SET_RANGE_TABLE_WORK_AREA(work_area, range_start, range_end) \ | |
| 1894 do { \ | |
| 1895 EXTEND_RANGE_TABLE_WORK_AREA ((work_area), 2); \ | |
| 1896 (work_area).table[(work_area).used++] = (range_start); \ | |
| 1897 (work_area).table[(work_area).used++] = (range_end); \ | |
| 1898 } while (0) | |
| 1899 | |
| 941 | 1900 /* Free allocated memory for WORK_AREA. */ |
| 939 | 1901 #define FREE_RANGE_TABLE_WORK_AREA(work_area) \ |
| 1902 do { \ | |
| 1903 if ((work_area).table) \ | |
| 1904 free ((work_area).table); \ | |
| 1905 } while (0) | |
| 1906 | |
|
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|
1907 #define CLEAR_RANGE_TABLE_WORK_USED(work_area) ((work_area).used = 0, (work_area).bits = 0) |
| 939 | 1908 #define RANGE_TABLE_WORK_USED(work_area) ((work_area).used) |
|
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1909 #define RANGE_TABLE_WORK_BITS(work_area) ((work_area).bits) |
| 939 | 1910 #define RANGE_TABLE_WORK_ELT(work_area, i) ((work_area).table[i]) |
| 1911 | |
| 1912 | |
|
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1913 /* Set the bit for character C in a list. */ |
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1914 #define SET_LIST_BIT(c) \ |
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1915 (b[((unsigned char) (c)) / BYTEWIDTH] \ |
|
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1916 |= 1 << (((unsigned char) c) % BYTEWIDTH)) |
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1917 |
|
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1918 |
|
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|
1919 /* Get the next unsigned number in the uncompiled pattern. */ |
| 941 | 1920 #define GET_UNSIGNED_NUMBER(num) \ |
|
2350
f3edfed6aa96
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|
1921 do { if (p != pend) \ |
|
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1922 { \ |
| 941 | 1923 PATFETCH (c); \ |
|
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|
1924 while ('0' <= c && c <= '9') \ |
| 941 | 1925 { \ |
| 1926 if (num < 0) \ | |
| 1927 num = 0; \ | |
| 1928 num = num * 10 + c - '0'; \ | |
| 1929 if (p == pend) \ | |
| 1930 break; \ | |
| 1931 PATFETCH (c); \ | |
| 1932 } \ | |
| 1933 } \ | |
|
2350
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1934 } 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
|
1935 |
|
2881
d3634ee92a43
(WIDE_CHAR_SUPPORT): Define if _LIBC as well.
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parents:
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diff
changeset
|
1936 #if WIDE_CHAR_SUPPORT |
|
2851
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(WIDE_CHAR_SUPPORT): New macro.
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parents:
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diff
changeset
|
1937 /* The GNU C library provides support for user-defined character classes |
|
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(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1938 and the functions from ISO C amendement 1. */ |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1939 # ifdef CHARCLASS_NAME_MAX |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1940 # define CHAR_CLASS_MAX_LENGTH CHARCLASS_NAME_MAX |
|
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(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1941 # else |
|
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(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1942 /* This shouldn't happen but some implementation might still have this |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1943 problem. Use a reasonable default value. */ |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1944 # define CHAR_CLASS_MAX_LENGTH 256 |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1945 # endif |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1946 typedef wctype_t re_wctype_t; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1947 # define re_wctype wctype |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1948 # define re_iswctype iswctype |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1949 # define re_wctype_to_bit(cc) 0 |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1950 #else |
|
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(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1951 # define CHAR_CLASS_MAX_LENGTH 9 /* Namely, `multibyte'. */ |
|
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(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1952 # define btowc(c) c |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1953 |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1954 /* Character classes' indices. */ |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1955 typedef enum { RECC_ERROR = 0, |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1956 RECC_ALNUM, RECC_ALPHA, RECC_WORD, |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1957 RECC_GRAPH, RECC_PRINT, |
|
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(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1958 RECC_LOWER, RECC_UPPER, |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1959 RECC_PUNCT, RECC_CNTRL, |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1960 RECC_DIGIT, RECC_XDIGIT, |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1961 RECC_BLANK, RECC_SPACE, |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1962 RECC_MULTIBYTE, RECC_NONASCII, |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1963 RECC_ASCII, RECC_UNIBYTE |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1964 } re_wctype_t; |
|
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(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1965 |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1966 /* Map a string to the char class it names (if any). */ |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1967 static re_wctype_t |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1968 re_wctype (string) |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1969 unsigned char *string; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1970 { |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1971 if (STREQ (string, "alnum")) return RECC_ALNUM; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1972 else if (STREQ (string, "alpha")) return RECC_ALPHA; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1973 else if (STREQ (string, "word")) return RECC_WORD; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1974 else if (STREQ (string, "ascii")) return RECC_ASCII; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1975 else if (STREQ (string, "nonascii")) return RECC_NONASCII; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1976 else if (STREQ (string, "graph")) return RECC_GRAPH; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1977 else if (STREQ (string, "lower")) return RECC_LOWER; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
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diff
changeset
|
1978 else if (STREQ (string, "print")) return RECC_PRINT; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1979 else if (STREQ (string, "punct")) return RECC_PUNCT; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1980 else if (STREQ (string, "space")) return RECC_SPACE; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1981 else if (STREQ (string, "upper")) return RECC_UPPER; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1982 else if (STREQ (string, "unibyte")) return RECC_UNIBYTE; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1983 else if (STREQ (string, "multibyte")) return RECC_MULTIBYTE; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1984 else if (STREQ (string, "digit")) return RECC_DIGIT; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1985 else if (STREQ (string, "xdigit")) return RECC_XDIGIT; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1986 else if (STREQ (string, "cntrl")) return RECC_CNTRL; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1987 else if (STREQ (string, "blank")) return RECC_BLANK; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1988 else return 0; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1989 } |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1990 |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1991 /* True iff CH is in the char class CC. */ |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1992 static boolean |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1993 re_iswctype (ch, cc) |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1994 int ch; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1995 re_wctype_t cc; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1996 { |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1997 switch (cc) |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1998 { |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
1999 case RECC_ALNUM: return ISALNUM (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2000 case RECC_ALPHA: return ISALPHA (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2001 case RECC_BLANK: return ISBLANK (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2002 case RECC_CNTRL: return ISCNTRL (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2003 case RECC_DIGIT: return ISDIGIT (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2004 case RECC_GRAPH: return ISGRAPH (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2005 case RECC_LOWER: return ISLOWER (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2006 case RECC_PRINT: return ISPRINT (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2007 case RECC_PUNCT: return ISPUNCT (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2008 case RECC_SPACE: return ISSPACE (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2009 case RECC_UPPER: return ISUPPER (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2010 case RECC_XDIGIT: return ISXDIGIT (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2011 case RECC_ASCII: return IS_REAL_ASCII (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2012 case RECC_NONASCII: return !IS_REAL_ASCII (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2013 case RECC_UNIBYTE: return ISUNIBYTE (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2014 case RECC_MULTIBYTE: return !ISUNIBYTE (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2015 case RECC_WORD: return ISWORD (ch); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2016 case RECC_ERROR: return false; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2017 } |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2018 } |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2019 |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2020 /* Return a bit-pattern to use in the range-table bits to match multibyte |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2021 chars of class CC. */ |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2022 static int |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2023 re_wctype_to_bit (cc) |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2024 re_wctype_t cc; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2025 { |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2026 switch (cc) |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2027 { |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2028 case RECC_NONASCII: case RECC_PRINT: case RECC_GRAPH: |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2029 case RECC_MULTIBYTE: return BIT_MULTIBYTE; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2030 case RECC_ALPHA: case RECC_ALNUM: case RECC_WORD: return BIT_WORD; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2031 case RECC_LOWER: return BIT_LOWER; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2032 case RECC_UPPER: return BIT_UPPER; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2033 case RECC_PUNCT: return BIT_PUNCT; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2034 case RECC_SPACE: return BIT_SPACE; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2035 case RECC_ASCII: case RECC_DIGIT: case RECC_XDIGIT: case RECC_CNTRL: |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2036 case RECC_BLANK: case RECC_UNIBYTE: case RECC_ERROR: return 0; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2037 } |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2038 } |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2039 #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
|
2040 |
|
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
2041 /* QUIT is only used on NTemacs. */ |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
2042 #if !defined WINDOWSNT || !defined emacs || !defined QUIT |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
2043 # undef QUIT |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
2044 # define QUIT |
|
2350
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
2045 #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
|
2046 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2047 #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
|
2048 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2049 /* 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
|
2050 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
|
2051 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
|
2052 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
|
2053 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
|
2054 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
|
2055 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2056 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
|
2057 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2058 /* 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
|
2059 That is so we can make them bigger as needed, |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
2060 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
|
2061 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
|
2062 |
|
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
|
2063 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
|
2064 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
|
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 /* Make the register vectors big enough for NUM_REGS registers, |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
2067 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
|
2068 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2069 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
|
2070 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
|
2071 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
|
2072 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2073 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
|
2074 { |
|
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
|
2075 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
|
2076 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
|
2077 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
|
2078 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
|
2079 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2080 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
|
2081 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2082 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2083 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2084 #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
|
2085 |
|
2350
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
2086 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
|
2087 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
|
2088 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
|
2089 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2090 /* `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
|
2091 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
|
2092 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2093 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
|
2094 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
|
2095 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2096 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
|
2097 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
|
2098 `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
|
2099 `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
|
2100 `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
|
2101 `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
|
2102 `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
|
2103 `not_bol' and `not_eol' are zero; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
2104 |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
2105 The `fastmap' field is neither examined nor set. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2106 |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2107 /* 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
|
2108 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
|
2109 #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
|
2110 do { \ |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2111 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
|
2112 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
|
2113 } 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
|
2114 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2115 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2116 /* 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
|
2117 #define FREE_STACK_RETURN(value) \ |
| 939 | 2118 do { \ |
| 2119 FREE_RANGE_TABLE_WORK_AREA (range_table_work); \ | |
| 2120 free (compile_stack.stack); \ | |
| 2121 return value; \ | |
| 2122 } 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
|
2123 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2124 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
|
2125 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
|
2126 re_char *pattern; |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
2127 size_t 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
|
2128 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
|
2129 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
|
2130 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2131 /* 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
|
2132 `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
|
2133 they can be reliably used as array indices. */ |
| 939 | 2134 register unsigned int c, c1; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
2135 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2136 /* 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
|
2137 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
|
2138 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2139 /* 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
|
2140 register unsigned char *b; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
2141 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2142 /* 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
|
2143 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
|
2144 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2145 /* 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
|
2146 #ifdef AIX |
|
ba6fdbf593bb
(regex_compile): Declare p with non-const type on AIX.
Richard Stallman <rms@gnu.org>
parents:
1383
diff
changeset
|
2147 /* `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
|
2148 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
|
2149 #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
|
2150 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
|
2151 #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
|
2152 re_char *pend = pattern + size; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
2153 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2154 /* 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
|
2155 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
|
2156 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2157 /* 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
|
2158 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
|
2159 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
|
2160 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
|
2161 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
|
2162 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2163 /* 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
|
2164 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
|
2165 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
|
2166 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
|
2167 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2168 /* 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
|
2169 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
|
2170 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2171 /* 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
|
2172 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
|
2173 re_char *beg_interval; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
2174 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2175 /* Address of the place where a forward jump should go to the end of |
| 941 | 2176 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
|
2177 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
|
2178 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
|
2179 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2180 /* 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
|
2181 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
|
2182 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
|
2183 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
|
2184 |
| 939 | 2185 /* Work area for range table of charset. */ |
| 2186 struct range_table_work_area range_table_work; | |
| 2187 | |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
2188 /* If the object matched can contain multibyte characters. */ |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
2189 const boolean multibyte = RE_MULTIBYTE_P (bufp); |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
2190 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2191 #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
|
2192 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
|
2193 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
|
2194 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
|
2195 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2196 unsigned debug_count; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
2197 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2198 for (debug_count = 0; debug_count < size; debug_count++) |
| 941 | 2199 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
|
2200 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
|
2201 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2202 #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
|
2203 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2204 /* 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
|
2205 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
|
2206 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
|
2207 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
|
2208 |
|
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 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
|
2210 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
|
2211 |
| 939 | 2212 range_table_work.table = 0; |
| 2213 range_table_work.allocated = 0; | |
| 2214 | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2215 /* 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
|
2216 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
|
2217 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
|
2218 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
|
2219 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2220 /* 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
|
2221 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
|
2222 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
|
2223 bufp->used = 0; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
2224 |
|
441
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 /* 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
|
2226 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
|
2227 |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
2228 #if !defined emacs && !defined SYNTAX_TABLE |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2229 /* 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
|
2230 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
|
2231 #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
|
2232 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2233 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
|
2234 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2235 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
|
2236 { /* If zero allocated, but buffer is non-null, try to realloc |
| 941 | 2237 enough space. This loses if buffer's address is bogus, but |
| 2238 that is the user's responsibility. */ | |
| 2239 RETALLOC (bufp->buffer, INIT_BUF_SIZE, unsigned char); | |
| 2240 } | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2241 else |
| 941 | 2242 { /* Caller did not allocate a buffer. Do it for them. */ |
| 2243 bufp->buffer = TALLOC (INIT_BUF_SIZE, unsigned char); | |
| 2244 } | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2245 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
|
2246 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2247 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
|
2248 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2249 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2250 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
|
2251 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2252 /* 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
|
2253 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
|
2254 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2255 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
|
2256 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2257 switch (c) |
| 941 | 2258 { |
| 2259 case '^': | |
| 2260 { | |
| 2261 if ( /* If at start of pattern, it's an operator. */ | |
| 2262 p == pattern + 1 | |
| 2263 /* If context independent, it's an operator. */ | |
| 2264 || syntax & RE_CONTEXT_INDEP_ANCHORS | |
| 2265 /* Otherwise, depends on what's come before. */ | |
| 2266 || at_begline_loc_p (pattern, p, syntax)) | |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
2267 BUF_PUSH ((syntax & RE_NO_NEWLINE_ANCHOR) ? begbuf : begline); |
| 941 | 2268 else |
| 2269 goto normal_char; | |
| 2270 } | |
| 2271 break; | |
| 2272 | |
| 2273 | |
| 2274 case '$': | |
| 2275 { | |
| 2276 if ( /* If at end of pattern, it's an operator. */ | |
| 2277 p == pend | |
| 2278 /* If context independent, it's an operator. */ | |
| 2279 || syntax & RE_CONTEXT_INDEP_ANCHORS | |
| 2280 /* Otherwise, depends on what's next. */ | |
| 2281 || at_endline_loc_p (p, pend, syntax)) | |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
2282 BUF_PUSH ((syntax & RE_NO_NEWLINE_ANCHOR) ? endbuf : endline); |
| 941 | 2283 else |
| 2284 goto normal_char; | |
| 2285 } | |
| 2286 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
|
2287 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2288 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2289 case '+': |
| 941 | 2290 case '?': |
| 2291 if ((syntax & RE_BK_PLUS_QM) | |
| 2292 || (syntax & RE_LIMITED_OPS)) | |
| 2293 goto normal_char; | |
| 2294 handle_plus: | |
| 2295 case '*': | |
| 2296 /* If there is no previous pattern... */ | |
| 2297 if (!laststart) | |
| 2298 { | |
| 2299 if (syntax & RE_CONTEXT_INVALID_OPS) | |
| 2300 FREE_STACK_RETURN (REG_BADRPT); | |
| 2301 else if (!(syntax & RE_CONTEXT_INDEP_OPS)) | |
| 2302 goto normal_char; | |
| 2303 } | |
| 2304 | |
| 2305 { | |
| 2306 /* 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
|
2307 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
|
2308 boolean greedy = 1; |
| 941 | 2309 |
| 2310 /* If there is a sequence of repetition chars, collapse it | |
| 2311 down to just one (the right one). We can't combine | |
| 2312 interval operators with these because of, e.g., `a{2}*', | |
| 2313 which should only match an even number of `a's. */ | |
| 2314 | |
| 2315 for (;;) | |
| 2316 { | |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
2317 if ((syntax & RE_FRUGAL) |
|
2034
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2318 && 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
|
2319 greedy = 0; |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2320 else |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2321 { |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2322 zero_times_ok |= c != '+'; |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2323 many_times_ok |= c != '?'; |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2324 } |
| 941 | 2325 |
| 2326 if (p == pend) | |
| 2327 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
|
2328 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
|
2329 || (!(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
|
2330 && (*p == '+' || *p == '?'))) |
| 941 | 2331 ; |
|
2371
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
2332 else if (syntax & RE_BK_PLUS_QM && *p == '\\') |
| 941 | 2333 { |
|
2371
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
2334 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
|
2335 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
|
2336 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
|
2337 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
|
2338 else |
|
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
2339 break; |
| 941 | 2340 } |
| 2341 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
|
2342 break; |
| 941 | 2343 /* 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
|
2344 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
|
2345 } |
| 941 | 2346 |
| 2347 /* Star, etc. applied to an empty pattern is equivalent | |
| 2348 to an empty pattern. */ | |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2349 if (!laststart || laststart == b) |
| 941 | 2350 break; |
| 2351 | |
| 2352 /* Now we know whether or not zero matches is allowed | |
| 2353 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
|
2354 if (greedy) |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2355 { |
|
2350
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
2356 if (many_times_ok) |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2357 { |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2358 boolean simple = skip_one_char (laststart) == b; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2359 unsigned int startoffset = 0; |
|
2372
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
2360 re_opcode_t ofj = |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
2361 (simple || !analyse_first (laststart, b, NULL, 0)) ? |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
2362 on_failure_jump : on_failure_jump_loop; |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2363 assert (skip_one_char (laststart) <= b); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2364 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2365 if (!zero_times_ok && simple) |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2366 { /* 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
|
2367 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
|
2368 into PP* if P is simple. */ |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2369 unsigned char *p1, *p2; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2370 startoffset = b - laststart; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2371 GET_BUFFER_SPACE (startoffset); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2372 p1 = b; p2 = laststart; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2373 while (p2 < p1) |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2374 *b++ = *p2++; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2375 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
|
2376 } |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2377 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2378 GET_BUFFER_SPACE (6); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2379 if (!zero_times_ok) |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2380 /* A + loop. */ |
|
2372
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
2381 STORE_JUMP (ofj, 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
|
2382 else |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2383 /* 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
|
2384 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
|
2385 that yet, we leave the decision up to |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2386 on_failure_jump_smart. */ |
|
2372
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
2387 INSERT_JUMP (simple ? on_failure_jump_smart : ofj, |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2388 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
|
2389 b += 3; |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2390 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
|
2391 b += 3; |
| 941 | 2392 } |
| 2393 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
|
2394 { |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2395 /* A simple ? pattern. */ |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2396 assert (zero_times_ok); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2397 GET_BUFFER_SPACE (3); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2398 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
|
2399 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
|
2400 } |
|
2034
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2401 } |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2402 else /* not greedy */ |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2403 { /* 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
|
2404 |
|
2370
d8ded9c0e20c
(enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2359
diff
changeset
|
2405 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
|
2406 if (many_times_ok) |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2407 { |
|
2372
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
2408 boolean emptyp = analyse_first (laststart, b, NULL, 0); |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
2409 |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2410 /* 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
|
2411 we only need a conditional jump at the end of the loop */ |
|
2372
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
2412 if (emptyp) BUF_PUSH (no_op); |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
2413 STORE_JUMP (emptyp ? on_failure_jump_nastyloop |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
2414 : on_failure_jump, b, laststart); |
|
2034
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2415 b += 3; |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2416 if (zero_times_ok) |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2417 { |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2418 /* 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
|
2419 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
|
2420 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
|
2421 INSERT_JUMP (jump, laststart, b); |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2422 b += 3; |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2423 } |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2424 } |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2425 else |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2426 { |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2427 /* non-greedy a?? */ |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2428 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
|
2429 b += 3; |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2430 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
|
2431 b += 3; |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2432 } |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2433 } |
|
00db7733320d
1999-12-15 Kenichi Handa <handa@etl.go.jp>
Dave Love <fx@gnu.org>
parents:
1972
diff
changeset
|
2434 } |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
2435 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
|
2436 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
|
2437 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2438 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2439 case '.': |
| 941 | 2440 laststart = b; |
| 2441 BUF_PUSH (anychar); | |
| 2442 break; | |
| 2443 | |
| 2444 | |
| 2445 case '[': | |
| 2446 { | |
| 939 | 2447 CLEAR_RANGE_TABLE_WORK_USED (range_table_work); |
| 2448 | |
| 941 | 2449 if (p == pend) FREE_STACK_RETURN (REG_EBRACK); |
| 2450 | |
| 2451 /* Ensure that we have enough space to push a charset: the | |
| 2452 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
|
2453 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
|
2454 |
| 941 | 2455 laststart = b; |
| 2456 | |
| 2457 /* We test `*p == '^' twice, instead of using an if | |
| 2458 statement, so we only need one BUF_PUSH. */ | |
| 2459 BUF_PUSH (*p == '^' ? charset_not : charset); | |
| 2460 if (*p == '^') | |
| 2461 p++; | |
| 2462 | |
| 2463 /* Remember the first position in the bracket expression. */ | |
| 2464 p1 = p; | |
| 2465 | |
| 2466 /* Push the number of bytes in the bitmap. */ | |
| 2467 BUF_PUSH ((1 << BYTEWIDTH) / BYTEWIDTH); | |
| 2468 | |
| 2469 /* Clear the whole map. */ | |
| 2470 bzero (b, (1 << BYTEWIDTH) / BYTEWIDTH); | |
| 2471 | |
| 2472 /* charset_not matches newline according to a syntax bit. */ | |
| 2473 if ((re_opcode_t) b[-2] == charset_not | |
| 2474 && (syntax & RE_HAT_LISTS_NOT_NEWLINE)) | |
| 2475 SET_LIST_BIT ('\n'); | |
| 2476 | |
| 2477 /* Read in characters and ranges, setting map bits. */ | |
| 2478 for (;;) | |
| 2479 { | |
| 939 | 2480 boolean escaped_char = false; |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
2481 const unsigned char *p2 = p; |
| 939 | 2482 |
| 941 | 2483 if (p == pend) FREE_STACK_RETURN (REG_EBRACK); |
| 2484 | |
| 2485 PATFETCH (c); | |
| 2486 | |
| 2487 /* \ might escape characters inside [...] and [^...]. */ | |
| 2488 if ((syntax & RE_BACKSLASH_ESCAPE_IN_LISTS) && c == '\\') | |
| 2489 { | |
| 2490 if (p == pend) FREE_STACK_RETURN (REG_EESCAPE); | |
| 679 | 2491 |
| 2492 PATFETCH (c); | |
| 939 | 2493 escaped_char = true; |
| 941 | 2494 } |
| 939 | 2495 else |
| 2496 { | |
| 992 | 2497 /* Could be the end of the bracket expression. If it's |
| 2498 not (i.e., when the bracket expression is `[]' so | |
| 2499 far), the ']' character bit gets set way below. */ | |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
2500 if (c == ']' && p2 != p1) |
| 992 | 2501 break; |
| 941 | 2502 } |
| 939 | 2503 |
| 2504 /* What should we do for the character which is | |
| 2505 greater than 0x7F, but not BASE_LEADING_CODE_P? | |
| 2506 XXX */ | |
| 2507 | |
| 941 | 2508 /* See if we're at the beginning of a possible character |
| 2509 class. */ | |
| 939 | 2510 |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
2511 if (!escaped_char && |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
2512 syntax & RE_CHAR_CLASSES && c == '[' && *p == ':') |
| 992 | 2513 { |
| 2514 /* Leave room for the null. */ | |
|
2851
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2515 unsigned 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
|
2516 const unsigned char *class_beg; |
| 941 | 2517 |
| 2518 PATFETCH (c); | |
| 2519 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
|
2520 class_beg = p; |
| 941 | 2521 |
| 2522 /* If pattern is `[[:'. */ | |
| 2523 if (p == pend) FREE_STACK_RETURN (REG_EBRACK); | |
| 2524 | |
| 2525 for (;;) | |
| 2526 { | |
|
2851
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2527 PATFETCH (c); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2528 if ((c == ':' && *p == ']') || p == pend) |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2529 break; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2530 if (c1 < CHAR_CLASS_MAX_LENGTH) |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2531 str[c1++] = c; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2532 else |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2533 /* This is in any case an invalid class name. */ |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2534 str[0] = '\0'; |
| 941 | 2535 } |
| 2536 str[c1] = '\0'; | |
| 939 | 2537 |
| 2538 /* If isn't a word bracketed by `[:' and `:]': | |
| 2539 undo the ending character, the letters, and | |
| 2540 leave the leading `:' and `[' (but set bits for | |
| 2541 them). */ | |
| 941 | 2542 if (c == ':' && *p == ']') |
| 2543 { | |
| 2544 int ch; | |
|
2851
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2545 re_wctype_t cc; |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2546 |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2547 cc = re_wctype (str); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2548 |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2549 if (cc == 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
|
2550 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
|
2551 |
|
2851
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2552 /* Throw away the ] at the end of the character |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2553 class. */ |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2554 PATFETCH (c); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2555 |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2556 if (p == pend) FREE_STACK_RETURN (REG_EBRACK); |
| 941 | 2557 |
|
1933
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
2558 /* Most character classes in a multibyte match |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
2559 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
|
2560 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
|
2561 they can only match ASCII characters. We |
|
2851
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2562 don't need to handle them for multibyte. |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2563 They are distinguished by a negative wctype. */ |
|
1933
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
2564 |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
2565 if (multibyte) |
|
2851
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2566 SET_RANGE_TABLE_WORK_AREA_BIT (range_table_work, |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2567 re_wctype_to_bit (cc)); |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2568 |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2569 for (ch = 0; ch < 1 << BYTEWIDTH; ++ch) |
| 941 | 2570 { |
|
692
1036844e8833
(regex_compile): Use TRANSLATE before calling SET_LIST_BIT.
Richard Stallman <rms@gnu.org>
parents:
680
diff
changeset
|
2571 int translated = TRANSLATE (ch); |
|
2851
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
2572 if (re_iswctype (btowc (ch), cc)) |
|
1933
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
2573 SET_LIST_BIT (translated); |
| 941 | 2574 } |
| 939 | 2575 |
| 2576 /* Repeat the loop. */ | |
| 2577 continue; | |
| 941 | 2578 } |
| 2579 else | |
| 2580 { | |
|
2371
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
2581 /* 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
|
2582 p = class_beg; |
| 941 | 2583 SET_LIST_BIT ('['); |
| 939 | 2584 |
| 2585 /* Because the `:' may starts the range, we | |
| 2586 can't simply set bit and repeat the loop. | |
| 941 | 2587 Instead, just set it to C and handle below. */ |
| 939 | 2588 c = ':'; |
| 941 | 2589 } |
| 2590 } | |
| 939 | 2591 |
| 2592 if (p < pend && p[0] == '-' && p[1] != ']') | |
| 2593 { | |
| 2594 | |
| 2595 /* Discard the `-'. */ | |
| 2596 PATFETCH (c1); | |
| 2597 | |
| 2598 /* Fetch the character which ends the range. */ | |
| 2599 PATFETCH (c1); | |
| 2600 | |
|
2581
34ebbdf4dda0
(MAKE_CHAR) [!emacs]: Dummy macro for non-Emacs env.
Kenichi Handa <handa@m17n.org>
parents:
2551
diff
changeset
|
2601 if (SINGLE_BYTE_CHAR_P (c)) |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
2602 { |
|
2581
34ebbdf4dda0
(MAKE_CHAR) [!emacs]: Dummy macro for non-Emacs env.
Kenichi Handa <handa@m17n.org>
parents:
2551
diff
changeset
|
2603 if (! SINGLE_BYTE_CHAR_P (c1)) |
|
34ebbdf4dda0
(MAKE_CHAR) [!emacs]: Dummy macro for non-Emacs env.
Kenichi Handa <handa@m17n.org>
parents:
2551
diff
changeset
|
2604 { |
|
34ebbdf4dda0
(MAKE_CHAR) [!emacs]: Dummy macro for non-Emacs env.
Kenichi Handa <handa@m17n.org>
parents:
2551
diff
changeset
|
2605 /* Handle a range such as \177-\377 in |
|
34ebbdf4dda0
(MAKE_CHAR) [!emacs]: Dummy macro for non-Emacs env.
Kenichi Handa <handa@m17n.org>
parents:
2551
diff
changeset
|
2606 multibyte mode. Split that into two |
|
34ebbdf4dda0
(MAKE_CHAR) [!emacs]: Dummy macro for non-Emacs env.
Kenichi Handa <handa@m17n.org>
parents:
2551
diff
changeset
|
2607 ranges, the low one ending at 0237, and |
|
34ebbdf4dda0
(MAKE_CHAR) [!emacs]: Dummy macro for non-Emacs env.
Kenichi Handa <handa@m17n.org>
parents:
2551
diff
changeset
|
2608 the high one starting at the smallest |
|
34ebbdf4dda0
(MAKE_CHAR) [!emacs]: Dummy macro for non-Emacs env.
Kenichi Handa <handa@m17n.org>
parents:
2551
diff
changeset
|
2609 character in the charset of C1 and |
|
34ebbdf4dda0
(MAKE_CHAR) [!emacs]: Dummy macro for non-Emacs env.
Kenichi Handa <handa@m17n.org>
parents:
2551
diff
changeset
|
2610 ending at C1. */ |
|
34ebbdf4dda0
(MAKE_CHAR) [!emacs]: Dummy macro for non-Emacs env.
Kenichi Handa <handa@m17n.org>
parents:
2551
diff
changeset
|
2611 int charset = CHAR_CHARSET (c1); |
|
34ebbdf4dda0
(MAKE_CHAR) [!emacs]: Dummy macro for non-Emacs env.
Kenichi Handa <handa@m17n.org>
parents:
2551
diff
changeset
|
2612 int c2 = MAKE_CHAR (charset, 0, 0); |
|
34ebbdf4dda0
(MAKE_CHAR) [!emacs]: Dummy macro for non-Emacs env.
Kenichi Handa <handa@m17n.org>
parents:
2551
diff
changeset
|
2613 |
|
34ebbdf4dda0
(MAKE_CHAR) [!emacs]: Dummy macro for non-Emacs env.
Kenichi Handa <handa@m17n.org>
parents:
2551
diff
changeset
|
2614 SET_RANGE_TABLE_WORK_AREA (range_table_work, |
|
34ebbdf4dda0
(MAKE_CHAR) [!emacs]: Dummy macro for non-Emacs env.
Kenichi Handa <handa@m17n.org>
parents:
2551
diff
changeset
|
2615 c2, c1); |
|
34ebbdf4dda0
(MAKE_CHAR) [!emacs]: Dummy macro for non-Emacs env.
Kenichi Handa <handa@m17n.org>
parents:
2551
diff
changeset
|
2616 c1 = 0237; |
|
34ebbdf4dda0
(MAKE_CHAR) [!emacs]: Dummy macro for non-Emacs env.
Kenichi Handa <handa@m17n.org>
parents:
2551
diff
changeset
|
2617 } |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
2618 } |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
2619 else if (!SAME_CHARSET_P (c, c1)) |
| 939 | 2620 FREE_STACK_RETURN (REG_ERANGE); |
| 2621 } | |
| 941 | 2622 else |
| 939 | 2623 /* Range from C to C. */ |
| 2624 c1 = c; | |
| 2625 | |
| 2626 /* Set the range ... */ | |
| 2627 if (SINGLE_BYTE_CHAR_P (c)) | |
| 2628 /* ... into bitmap. */ | |
| 941 | 2629 { |
| 939 | 2630 unsigned this_char; |
| 2631 int range_start = c, range_end = c1; | |
| 2632 | |
| 2633 /* If the start is after the end, the range is empty. */ | |
| 2634 if (range_start > range_end) | |
| 2635 { | |
| 2636 if (syntax & RE_NO_EMPTY_RANGES) | |
| 2637 FREE_STACK_RETURN (REG_ERANGE); | |
| 2638 /* Else, repeat the loop. */ | |
| 679 | 2639 } |
| 2640 else | |
| 2641 { | |
| 939 | 2642 for (this_char = range_start; this_char <= range_end; |
| 2643 this_char++) | |
| 2644 SET_LIST_BIT (TRANSLATE (this_char)); | |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
2645 } |
| 941 | 2646 } |
| 679 | 2647 else |
| 939 | 2648 /* ... into range table. */ |
| 2649 SET_RANGE_TABLE_WORK_AREA (range_table_work, c, c1); | |
| 679 | 2650 } |
| 2651 | |
| 941 | 2652 /* Discard any (non)matching list bytes that are all 0 at the |
| 2653 end of the map. Decrease the map-length byte too. */ | |
| 2654 while ((int) b[-1] > 0 && b[b[-1] - 1] == 0) | |
| 2655 b[-1]--; | |
| 2656 b += b[-1]; | |
| 939 | 2657 |
|
1933
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
2658 /* Build real range table from work area. */ |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
2659 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
|
2660 || RANGE_TABLE_WORK_BITS (range_table_work)) |
| 939 | 2661 { |
| 2662 int i; | |
| 2663 int used = RANGE_TABLE_WORK_USED (range_table_work); | |
| 2664 | |
| 2665 /* 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
|
2666 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
|
2667 each character. */ |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
2668 GET_BUFFER_SPACE (4 + used * 3); |
| 939 | 2669 |
| 2670 /* Indicate the existence of range table. */ | |
| 2671 laststart[1] |= 0x80; | |
| 2672 | |
|
1933
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
2673 /* 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
|
2674 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
|
2675 *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
|
2676 *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
|
2677 |
| 939 | 2678 STORE_NUMBER_AND_INCR (b, used / 2); |
| 2679 for (i = 0; i < used; i++) | |
| 2680 STORE_CHARACTER_AND_INCR | |
| 2681 (b, RANGE_TABLE_WORK_ELT (range_table_work, i)); | |
| 2682 } | |
| 941 | 2683 } |
| 2684 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
|
2685 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2686 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2687 case '(': |
| 941 | 2688 if (syntax & RE_NO_BK_PARENS) |
| 2689 goto handle_open; | |
| 2690 else | |
| 2691 goto normal_char; | |
| 2692 | |
| 2693 | |
| 2694 case ')': | |
| 2695 if (syntax & RE_NO_BK_PARENS) | |
| 2696 goto handle_close; | |
| 2697 else | |
| 2698 goto normal_char; | |
| 2699 | |
| 2700 | |
| 2701 case '\n': | |
| 2702 if (syntax & RE_NEWLINE_ALT) | |
| 2703 goto handle_alt; | |
| 2704 else | |
| 2705 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
|
2706 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2707 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2708 case '|': |
| 941 | 2709 if (syntax & RE_NO_BK_VBAR) |
| 2710 goto handle_alt; | |
| 2711 else | |
| 2712 goto normal_char; | |
| 2713 | |
| 2714 | |
| 2715 case '{': | |
| 2716 if (syntax & RE_INTERVALS && syntax & RE_NO_BK_BRACES) | |
| 2717 goto handle_interval; | |
| 2718 else | |
| 2719 goto normal_char; | |
| 2720 | |
| 2721 | |
| 2722 case '\\': | |
| 2723 if (p == pend) FREE_STACK_RETURN (REG_EESCAPE); | |
| 2724 | |
| 2725 /* Do not translate the character after the \, so that we can | |
| 2726 distinguish, e.g., \B from \b, even if we normally would | |
| 2727 translate, e.g., B to b. */ | |
| 2728 PATFETCH_RAW (c); | |
| 2729 | |
| 2730 switch (c) | |
| 2731 { | |
| 2732 case '(': | |
| 2733 if (syntax & RE_NO_BK_PARENS) | |
| 2734 goto normal_backslash; | |
| 2735 | |
| 2736 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
|
2737 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2738 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
|
2739 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
|
2740 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2741 /* 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
|
2742 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
|
2743 { |
|
2371
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
2744 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
|
2745 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
|
2746 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
|
2747 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2748 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
|
2749 default: |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2750 /* 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
|
2751 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
|
2752 } |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2753 } |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2754 } |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2755 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2756 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
|
2757 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2758 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
|
2759 regnum++; |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2760 } |
| 941 | 2761 |
|
2350
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
2762 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
|
2763 { |
|
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
2764 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
|
2765 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
|
2766 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
|
2767 |
|
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
2768 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
|
2769 } |
|
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
2770 |
|
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
2771 /* 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
|
2772 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
|
2773 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
|
2774 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
|
2775 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
|
2776 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
|
2777 = 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
|
2778 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
|
2779 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
|
2780 |
|
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
2781 /* 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
|
2782 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
|
2783 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
|
2784 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
|
2785 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
|
2786 |
|
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
2787 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
|
2788 |
|
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
2789 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
|
2790 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
|
2791 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
|
2792 /* 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
|
2793 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
|
2794 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
|
2795 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
|
2796 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
|
2797 } |
| 941 | 2798 |
| 2799 case ')': | |
| 2800 if (syntax & RE_NO_BK_PARENS) goto normal_backslash; | |
| 2801 | |
| 2802 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
|
2803 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2804 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
|
2805 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
|
2806 else |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2807 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
|
2808 } |
| 941 | 2809 |
| 2810 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
|
2811 FIXUP_ALT_JUMP (); |
| 941 | 2812 |
| 2813 /* See similar code for backslashed left paren above. */ | |
| 2814 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
|
2815 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2816 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
|
2817 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
|
2818 else |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2819 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
|
2820 } |
| 941 | 2821 |
| 2822 /* Since we just checked for an empty stack above, this | |
| 2823 ``can't happen''. */ | |
| 2824 assert (compile_stack.avail != 0); | |
| 2825 { | |
| 2826 /* We don't just want to restore into `regnum', because | |
| 2827 later groups should continue to be numbered higher, | |
| 2828 as in `(ab)c(de)' -- the second group is #2. */ | |
| 2829 regnum_t this_group_regnum; | |
| 2830 | |
| 2831 compile_stack.avail--; | |
| 2832 begalt = bufp->buffer + COMPILE_STACK_TOP.begalt_offset; | |
| 2833 fixup_alt_jump | |
| 2834 = COMPILE_STACK_TOP.fixup_alt_jump | |
| 2835 ? bufp->buffer + COMPILE_STACK_TOP.fixup_alt_jump - 1 | |
| 2836 : 0; | |
| 2837 laststart = bufp->buffer + COMPILE_STACK_TOP.laststart_offset; | |
| 2838 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
|
2839 /* 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
|
2840 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
|
2841 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
|
2842 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
|
2843 |
| 941 | 2844 /* We're at the end of the group, so now we know how many |
| 2845 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
|
2846 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
|
2847 BUF_PUSH_2 (stop_memory, this_group_regnum); |
| 941 | 2848 } |
| 2849 break; | |
| 2850 | |
| 2851 | |
| 2852 case '|': /* `\|'. */ | |
| 2853 if (syntax & RE_LIMITED_OPS || syntax & RE_NO_BK_VBAR) | |
| 2854 goto normal_backslash; | |
| 2855 handle_alt: | |
| 2856 if (syntax & RE_LIMITED_OPS) | |
| 2857 goto normal_char; | |
| 2858 | |
| 2859 /* Insert before the previous alternative a jump which | |
| 2860 jumps to this alternative if the former fails. */ | |
| 2861 GET_BUFFER_SPACE (3); | |
| 2862 INSERT_JUMP (on_failure_jump, begalt, b + 6); | |
| 2863 pending_exact = 0; | |
| 2864 b += 3; | |
| 2865 | |
| 2866 /* The alternative before this one has a jump after it | |
| 2867 which gets executed if it gets matched. Adjust that | |
| 2868 jump so it will jump to this alternative's analogous | |
| 2869 jump (put in below, which in turn will jump to the next | |
| 2870 (if any) alternative's such jump, etc.). The last such | |
| 2871 jump jumps to the correct final destination. A picture: | |
| 2872 _____ _____ | |
| 2873 | | | | | |
| 2874 | v | v | |
| 2875 a | b | c | |
| 2876 | |
| 2877 If we are at `b', then fixup_alt_jump right now points to a | |
| 2878 three-byte space after `a'. We'll put in the jump, set | |
| 2879 fixup_alt_jump to right after `b', and leave behind three | |
| 2880 bytes which we'll fill in when we get to after `c'. */ | |
| 2881 | |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
2882 FIXUP_ALT_JUMP (); |
| 941 | 2883 |
| 2884 /* Mark and leave space for a jump after this alternative, | |
| 2885 to be filled in later either by next alternative or | |
| 2886 when know we're at the end of a series of alternatives. */ | |
| 2887 fixup_alt_jump = b; | |
| 2888 GET_BUFFER_SPACE (3); | |
| 2889 b += 3; | |
| 2890 | |
| 2891 laststart = 0; | |
| 2892 begalt = b; | |
| 2893 break; | |
| 2894 | |
| 2895 | |
| 2896 case '{': | |
| 2897 /* If \{ is a literal. */ | |
| 2898 if (!(syntax & RE_INTERVALS) | |
| 2899 /* If we're at `\{' and it's not the open-interval | |
| 2900 operator. */ | |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
2901 || (syntax & RE_NO_BK_BRACES)) |
| 941 | 2902 goto normal_backslash; |
| 2903 | |
| 2904 handle_interval: | |
| 2905 { | |
| 2906 /* If got here, then the syntax allows intervals. */ | |
| 2907 | |
| 2908 /* 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
|
2909 int lower_bound = 0, upper_bound = -1; |
| 941 | 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 beg_interval = p; |
| 941 | 2912 |
| 2913 if (p == pend) | |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
2914 FREE_STACK_RETURN (REG_EBRACE); |
| 941 | 2915 |
| 2916 GET_UNSIGNED_NUMBER (lower_bound); | |
| 2917 | |
| 2918 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
|
2919 GET_UNSIGNED_NUMBER (upper_bound); |
| 941 | 2920 else |
| 2921 /* Interval such as `{1}' => match exactly once. */ | |
| 2922 upper_bound = lower_bound; | |
| 2923 | |
| 2924 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
|
2925 || (upper_bound >= 0 && lower_bound > upper_bound)) |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
2926 FREE_STACK_RETURN (REG_BADBR); |
| 941 | 2927 |
| 2928 if (!(syntax & RE_NO_BK_BRACES)) | |
| 2929 { | |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
2930 if (c != '\\') |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
2931 FREE_STACK_RETURN (REG_BADBR); |
| 941 | 2932 |
| 2933 PATFETCH (c); | |
| 2934 } | |
| 2935 | |
| 2936 if (c != '}') | |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
2937 FREE_STACK_RETURN (REG_BADBR); |
| 941 | 2938 |
| 2939 /* We just parsed a valid interval. */ | |
| 2940 | |
| 2941 /* If it's invalid to have no preceding re. */ | |
| 2942 if (!laststart) | |
| 2943 { | |
| 2944 if (syntax & RE_CONTEXT_INVALID_OPS) | |
| 2945 FREE_STACK_RETURN (REG_BADRPT); | |
| 2946 else if (syntax & RE_CONTEXT_INDEP_OPS) | |
| 2947 laststart = b; | |
| 2948 else | |
| 2949 goto unfetch_interval; | |
| 2950 } | |
| 2951 | |
| 2952 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
|
2953 /* 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
|
2954 altogether. */ |
|
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
2955 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
|
2956 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
|
2957 /* 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
|
2958 ; |
| 941 | 2959 |
| 2960 /* Otherwise, we have a nontrivial interval. When | |
| 2961 we're all done, the pattern will look like: | |
| 2962 set_number_at <jump count> <upper bound> | |
| 2963 set_number_at <succeed_n count> <lower bound> | |
| 2964 succeed_n <after jump addr> <succeed_n count> | |
| 2965 <body of loop> | |
| 2966 jump_n <succeed_n addr> <jump count> | |
| 2967 (The upper bound and `jump_n' are omitted if | |
| 2968 `upper_bound' is 1, though.) */ | |
| 2969 else | |
| 2970 { /* If the upper bound is > 1, we need to insert | |
| 2971 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
|
2972 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
|
2973 : 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
|
2974 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
|
2975 |
|
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
2976 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
|
2977 |
|
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
2978 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
|
2979 { |
|
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
2980 /* 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
|
2981 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
|
2982 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
|
2983 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
|
2984 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
|
2985 } |
|
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
2986 else |
|
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
2987 { |
|
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
2988 /* 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
|
2989 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
|
2990 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
|
2991 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
|
2992 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
|
2993 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
|
2994 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
|
2995 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
|
2996 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
|
2997 |
|
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
2998 /* 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
|
2999 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
|
3000 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
|
3001 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
|
3002 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
|
3003 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
|
3004 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
|
3005 } |
|
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
3006 |
|
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
3007 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
|
3008 { |
|
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
3009 /* 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
|
3010 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
|
3011 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
|
3012 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
|
3013 } |
|
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
3014 else if (upper_bound > 1) |
| 941 | 3015 { /* More than one repetition is allowed, so |
| 3016 append a backward jump to the `succeed_n' | |
| 3017 that starts this interval. | |
| 3018 | |
| 3019 When we've reached this during matching, | |
| 3020 we'll have matched the interval once, so | |
| 3021 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
|
3022 STORE_JUMP2 (jump_n, b, laststart + startoffset, |
| 941 | 3023 upper_bound - 1); |
| 3024 b += 5; | |
| 3025 | |
| 3026 /* The location we want to set is the second | |
| 3027 parameter of the `jump_n'; that is `b-2' as | |
| 3028 an absolute address. `laststart' will be | |
| 3029 the `set_number_at' we're about to insert; | |
| 3030 `laststart+3' the number to set, the source | |
| 3031 for the relative address. But we are | |
| 3032 inserting into the middle of the pattern -- | |
| 3033 so everything is getting moved up by 5. | |
| 3034 Conclusion: (b - 2) - (laststart + 3) + 5, | |
| 3035 i.e., b - laststart. | |
| 3036 | |
| 3037 We insert this at the beginning of the loop | |
| 3038 so that if we fail during matching, we'll | |
| 3039 reinitialize the bounds. */ | |
| 3040 insert_op2 (set_number_at, laststart, b - laststart, | |
| 3041 upper_bound - 1, b); | |
| 3042 b += 5; | |
| 3043 } | |
| 3044 } | |
| 3045 pending_exact = 0; | |
| 3046 beg_interval = NULL; | |
| 3047 } | |
| 3048 break; | |
| 3049 | |
| 3050 unfetch_interval: | |
| 3051 /* If an invalid interval, match the characters as literals. */ | |
| 3052 assert (beg_interval); | |
| 3053 p = beg_interval; | |
| 3054 beg_interval = NULL; | |
| 3055 | |
| 3056 /* 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
|
3057 c = '{'; |
| 941 | 3058 |
| 3059 if (!(syntax & RE_NO_BK_BRACES)) | |
| 3060 { | |
|
2371
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
3061 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
|
3062 goto normal_backslash; |
| 941 | 3063 } |
|
2371
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
3064 else |
|
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
3065 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
|
3066 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3067 #ifdef emacs |
| 941 | 3068 /* There is no way to specify the before_dot and after_dot |
| 3069 operators. rms says this is ok. --karl */ | |
| 3070 case '=': | |
| 3071 BUF_PUSH (at_dot); | |
| 3072 break; | |
| 3073 | |
| 3074 case 's': | |
| 3075 laststart = b; | |
| 3076 PATFETCH (c); | |
| 3077 BUF_PUSH_2 (syntaxspec, syntax_spec_code[c]); | |
| 3078 break; | |
| 3079 | |
| 3080 case 'S': | |
| 3081 laststart = b; | |
| 3082 PATFETCH (c); | |
| 3083 BUF_PUSH_2 (notsyntaxspec, syntax_spec_code[c]); | |
| 3084 break; | |
| 939 | 3085 |
| 3086 case 'c': | |
| 679 | 3087 laststart = b; |
| 939 | 3088 PATFETCH_RAW (c); |
| 3089 BUF_PUSH_2 (categoryspec, c); | |
| 679 | 3090 break; |
| 3091 | |
| 939 | 3092 case 'C': |
| 679 | 3093 laststart = b; |
| 939 | 3094 PATFETCH_RAW (c); |
| 3095 BUF_PUSH_2 (notcategoryspec, c); | |
| 679 | 3096 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
|
3097 #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
|
3098 |
|
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 |
| 941 | 3100 case 'w': |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3101 if (syntax & RE_NO_GNU_OPS) |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3102 goto normal_char; |
| 941 | 3103 laststart = b; |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3104 BUF_PUSH_2 (syntaxspec, Sword); |
| 941 | 3105 break; |
| 3106 | |
| 3107 | |
| 3108 case 'W': | |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3109 if (syntax & RE_NO_GNU_OPS) |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3110 goto normal_char; |
| 941 | 3111 laststart = b; |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3112 BUF_PUSH_2 (notsyntaxspec, Sword); |
| 941 | 3113 break; |
| 3114 | |
| 3115 | |
| 3116 case '<': | |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3117 if (syntax & RE_NO_GNU_OPS) |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3118 goto normal_char; |
| 941 | 3119 BUF_PUSH (wordbeg); |
| 3120 break; | |
| 3121 | |
| 3122 case '>': | |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3123 if (syntax & RE_NO_GNU_OPS) |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3124 goto normal_char; |
| 941 | 3125 BUF_PUSH (wordend); |
| 3126 break; | |
| 3127 | |
| 3128 case 'b': | |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3129 if (syntax & RE_NO_GNU_OPS) |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3130 goto normal_char; |
| 941 | 3131 BUF_PUSH (wordbound); |
| 3132 break; | |
| 3133 | |
| 3134 case 'B': | |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3135 if (syntax & RE_NO_GNU_OPS) |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3136 goto normal_char; |
| 941 | 3137 BUF_PUSH (notwordbound); |
| 3138 break; | |
| 3139 | |
| 3140 case '`': | |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3141 if (syntax & RE_NO_GNU_OPS) |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3142 goto normal_char; |
| 941 | 3143 BUF_PUSH (begbuf); |
| 3144 break; | |
| 3145 | |
| 3146 case '\'': | |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3147 if (syntax & RE_NO_GNU_OPS) |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3148 goto normal_char; |
| 941 | 3149 BUF_PUSH (endbuf); |
| 3150 break; | |
| 3151 | |
| 3152 case '1': case '2': case '3': case '4': case '5': | |
| 3153 case '6': case '7': case '8': case '9': | |
| 3154 if (syntax & RE_NO_BK_REFS) | |
| 3155 goto normal_char; | |
| 3156 | |
| 3157 c1 = c - '0'; | |
| 3158 | |
| 3159 if (c1 > regnum) | |
| 3160 FREE_STACK_RETURN (REG_ESUBREG); | |
| 3161 | |
| 3162 /* Can't back reference to a subexpression if inside of it. */ | |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3163 if (group_in_compile_stack (compile_stack, (regnum_t) c1)) |
| 941 | 3164 goto normal_char; |
| 3165 | |
| 3166 laststart = b; | |
| 3167 BUF_PUSH_2 (duplicate, c1); | |
| 3168 break; | |
| 3169 | |
| 3170 | |
| 3171 case '+': | |
| 3172 case '?': | |
| 3173 if (syntax & RE_BK_PLUS_QM) | |
| 3174 goto handle_plus; | |
| 3175 else | |
| 3176 goto normal_backslash; | |
| 3177 | |
| 3178 default: | |
| 3179 normal_backslash: | |
| 3180 /* You might think it would be useful for \ to mean | |
| 3181 not to translate; but if we don't translate it | |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3182 it will never match anything. */ |
| 941 | 3183 c = TRANSLATE (c); |
| 3184 goto normal_char; | |
| 3185 } | |
| 3186 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
|
3187 |
|
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 default: |
| 941 | 3190 /* 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
|
3191 normal_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
|
3192 /* If no exactn currently being built. */ |
| 941 | 3193 if (!pending_exact |
| 3194 | |
| 3195 /* If last exactn not at current position. */ | |
| 3196 || pending_exact + *pending_exact + 1 != b | |
| 3197 | |
| 3198 /* We have only one byte following the exactn for the count. */ | |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
3199 || *pending_exact >= (1 << BYTEWIDTH) - MAX_MULTIBYTE_LENGTH |
| 939 | 3200 |
| 941 | 3201 /* If followed by a repetition operator. */ |
|
1342
e5cbc689bc64
(regex_compile): When checking after exactn
Richard Stallman <rms@gnu.org>
parents:
1335
diff
changeset
|
3202 || (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
|
3203 || ((syntax & RE_BK_PLUS_QM) |
|
1342
e5cbc689bc64
(regex_compile): When checking after exactn
Richard Stallman <rms@gnu.org>
parents:
1335
diff
changeset
|
3204 ? p + 1 < pend && *p == '\\' && (p[1] == '+' || p[1] == '?') |
|
e5cbc689bc64
(regex_compile): When checking after exactn
Richard Stallman <rms@gnu.org>
parents:
1335
diff
changeset
|
3205 : 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
|
3206 || ((syntax & RE_INTERVALS) |
| 941 | 3207 && ((syntax & RE_NO_BK_BRACES) |
|
1342
e5cbc689bc64
(regex_compile): When checking after exactn
Richard Stallman <rms@gnu.org>
parents:
1335
diff
changeset
|
3208 ? p != pend && *p == '{' |
|
e5cbc689bc64
(regex_compile): When checking after exactn
Richard Stallman <rms@gnu.org>
parents:
1335
diff
changeset
|
3209 : 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
|
3210 { |
|
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 /* Start building a new exactn. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3212 |
| 941 | 3213 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
|
3214 |
|
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 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
|
3216 pending_exact = b - 1; |
| 941 | 3217 } |
| 939 | 3218 |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
3219 GET_BUFFER_SPACE (MAX_MULTIBYTE_LENGTH); |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
3220 { |
|
2816
bd9c110a1342
(regex_compile) <normal_char>: Pay attention to multibyteness.
Kenichi Handa <handa@m17n.org>
parents:
2615
diff
changeset
|
3221 int len; |
|
bd9c110a1342
(regex_compile) <normal_char>: Pay attention to multibyteness.
Kenichi Handa <handa@m17n.org>
parents:
2615
diff
changeset
|
3222 |
|
bd9c110a1342
(regex_compile) <normal_char>: Pay attention to multibyteness.
Kenichi Handa <handa@m17n.org>
parents:
2615
diff
changeset
|
3223 if (multibyte) |
|
bd9c110a1342
(regex_compile) <normal_char>: Pay attention to multibyteness.
Kenichi Handa <handa@m17n.org>
parents:
2615
diff
changeset
|
3224 len = CHAR_STRING (c, b); |
|
bd9c110a1342
(regex_compile) <normal_char>: Pay attention to multibyteness.
Kenichi Handa <handa@m17n.org>
parents:
2615
diff
changeset
|
3225 else |
|
bd9c110a1342
(regex_compile) <normal_char>: Pay attention to multibyteness.
Kenichi Handa <handa@m17n.org>
parents:
2615
diff
changeset
|
3226 *b = c, len = 1; |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
3227 b += len; |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
3228 (*pending_exact) += len; |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
3229 } |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
3230 |
|
441
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 break; |
| 941 | 3232 } /* 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
|
3233 } /* 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
|
3234 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3235 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3236 /* Through the pattern now. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3237 |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
3238 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
|
3239 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3240 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
|
3241 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
|
3242 |
|
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 /* 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
|
3244 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
|
3245 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
|
3246 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
|
3247 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3248 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
|
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 /* 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
|
3251 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
|
3252 |
|
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 #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
|
3254 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
|
3255 { |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
3256 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
|
3257 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
|
3258 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
|
3259 } |
|
2350
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
3260 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
|
3261 #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
|
3262 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3263 #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
|
3264 /* 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
|
3265 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
|
3266 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
|
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 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
|
3269 |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
3270 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
|
3271 { |
|
1297
ac5117571763
(regex_compile) [!MATCH_MAY_ALLOCATE]: Fix paren error.
Richard Stallman <rms@gnu.org>
parents:
1296
diff
changeset
|
3272 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
|
3273 |
|
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 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
|
3275 fail_stack.stack |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3276 = (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
|
3277 * 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
|
3278 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
|
3279 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
|
3280 = (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
|
3281 (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
|
3282 * 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
|
3283 } |
|
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 |
|
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 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
|
3286 } |
|
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 #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
|
3288 |
|
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 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
|
3290 } /* 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
|
3291 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3292 /* 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
|
3293 |
| 941 | 3294 /* 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
|
3295 |
|
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 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
|
3297 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
|
3298 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
|
3299 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
|
3300 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
|
3301 { |
|
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 *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
|
3303 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
|
3304 } |
|
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 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3306 |
|
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 /* 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
|
3308 |
|
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 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
|
3310 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
|
3311 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
|
3312 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
|
3313 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
|
3314 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3315 *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
|
3316 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
|
3317 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
|
3318 } |
|
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 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3320 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3321 /* 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
|
3322 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
|
3323 |
|
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 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
|
3325 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
|
3326 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
|
3327 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
|
3328 int arg; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3329 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
|
3330 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3331 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
|
3332 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
|
3333 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3334 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
|
3335 *--pto = *--pfrom; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3336 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3337 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
|
3338 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3339 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3340 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3341 /* 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
|
3342 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3343 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
|
3344 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
|
3345 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
|
3346 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
|
3347 int arg1, arg2; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3348 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
|
3349 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3350 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
|
3351 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
|
3352 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3353 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
|
3354 *--pto = *--pfrom; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3355 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3356 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
|
3357 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3358 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3359 |
|
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 /* 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
|
3361 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
|
3362 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
|
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 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
|
3365 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
|
3366 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
|
3367 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
|
3368 { |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
3369 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
|
3370 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
|
3371 |
|
441
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 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
|
3373 /* 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
|
3374 (*prev == '(' && (syntax & RE_NO_BK_PARENS || prev_prev_backslash)) |
| 941 | 3375 /* After an alternative? */ |
|
2537
c971620b680c
(at_begline_loc_p): Also recognize the \\(?:^ case
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2438
diff
changeset
|
3376 || (*prev == '|' && (syntax & RE_NO_BK_VBAR || prev_prev_backslash)) |
|
c971620b680c
(at_begline_loc_p): Also recognize the \\(?:^ case
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2438
diff
changeset
|
3377 /* After a shy subexpression? */ |
|
c971620b680c
(at_begline_loc_p): Also recognize the \\(?:^ case
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2438
diff
changeset
|
3378 || ((syntax & RE_SHY_GROUPS) && prev - 2 >= pattern |
|
c971620b680c
(at_begline_loc_p): Also recognize the \\(?:^ case
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2438
diff
changeset
|
3379 && prev[-1] == '?' && prev[-2] == '(' |
|
c971620b680c
(at_begline_loc_p): Also recognize the \\(?:^ case
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2438
diff
changeset
|
3380 && (syntax & RE_NO_BK_PARENS |
|
c971620b680c
(at_begline_loc_p): Also recognize the \\(?:^ case
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2438
diff
changeset
|
3381 || (prev - 3 >= pattern && prev[-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
|
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 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3384 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3385 /* 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
|
3386 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
|
3387 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3388 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
|
3389 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
|
3390 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
|
3391 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
|
3392 { |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
3393 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
|
3394 boolean next_backslash = *next == '\\'; |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
3395 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
|
3396 |
|
441
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 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
|
3398 /* 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
|
3399 (syntax & RE_NO_BK_PARENS ? *next == ')' |
| 941 | 3400 : 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
|
3401 /* 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
|
3402 || (syntax & RE_NO_BK_VBAR ? *next == '|' |
| 941 | 3403 : 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
|
3404 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3405 |
|
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 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3407 /* 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
|
3408 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
|
3409 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3410 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
|
3411 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
|
3412 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
|
3413 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
|
3414 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3415 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
|
3416 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3417 for (this_element = compile_stack.avail - 1; |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3418 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
|
3419 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
|
3420 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
|
3421 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
|
3422 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3423 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
|
3424 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3425 |
|
2372
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3426 /* analyse_first. |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3427 If fastmap is non-NULL, go through the pattern and fill fastmap |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3428 with all the possible leading chars. If fastmap is NULL, don't |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3429 bother filling it up (obviously) and only return whether the |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3430 pattern could potentially match the empty string. |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3431 |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3432 Return 1 if p..pend might match the empty string. |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3433 Return 0 if p..pend matches at least one char. |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3434 Return -1 if p..pend matches at least one char, but fastmap was not |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3435 updated accurately. |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3436 Return -2 if an error occurred. */ |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3437 |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3438 static int |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3439 analyse_first (p, pend, fastmap, multibyte) |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3440 unsigned char *p, *pend; |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3441 char *fastmap; |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3442 const int 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
|
3443 { |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
3444 int j, k; |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3445 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
|
3446 #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
|
3447 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
|
3448 #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
|
3449 #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
|
3450 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
|
3451 #endif |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3452 |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
3453 #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
|
3454 /* 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
|
3455 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
|
3456 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
|
3457 #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
|
3458 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3459 /* Assume that each path through the pattern can be null until |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
3460 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
|
3461 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
|
3462 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
|
3463 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
|
3464 |
| 939 | 3465 /* If all elements for base leading-codes in fastmap is set, this |
| 941 | 3466 flag is set true. */ |
| 939 | 3467 boolean match_any_multibyte_characters = false; |
| 3468 | |
|
2372
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3469 assert (p); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3470 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3471 INIT_FAIL_STACK (); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3472 |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
3473 /* 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
|
3474 - 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
|
3475 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
|
3476 - 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
|
3477 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
|
3478 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
|
3479 - 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
|
3480 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
|
3481 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
|
3482 (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
|
3483 worklist. |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
3484 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
|
3485 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
|
3486 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
|
3487 |
|
2372
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3488 while (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
|
3489 { |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
3490 /* `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
|
3491 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
|
3492 (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
|
3493 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
|
3494 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
|
3495 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
|
3496 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
|
3497 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
|
3498 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
|
3499 |
|
2372
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3500 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
|
3501 { |
|
2372
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3502 if (path_can_be_null) |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3503 return (RESET_FAIL_STACK (), 1); |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3504 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3505 /* We have reached the (effective) end of pattern. */ |
|
2372
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3506 if (PATTERN_STACK_EMPTY ()) |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3507 return (RESET_FAIL_STACK (), 0); |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3508 |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3509 p = (unsigned char*) POP_PATTERN_OP (); |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3510 path_can_be_null = true; |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3511 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
|
3512 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3513 |
| 941 | 3514 /* 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
|
3515 assert (p < pend); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3516 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3517 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
|
3518 { |
|
2372
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3519 case succeed: |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3520 p = pend; |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3521 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
|
3522 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3523 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
|
3524 /* 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
|
3525 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
|
3526 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
|
3527 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
|
3528 p++; |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
3529 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
|
3530 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3531 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3532 /* Following are the cases which match a character. These end |
| 941 | 3533 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
|
3534 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3535 case exactn: |
|
2816
bd9c110a1342
(regex_compile) <normal_char>: Pay attention to multibyteness.
Kenichi Handa <handa@m17n.org>
parents:
2615
diff
changeset
|
3536 if (fastmap) |
|
bd9c110a1342
(regex_compile) <normal_char>: Pay attention to multibyteness.
Kenichi Handa <handa@m17n.org>
parents:
2615
diff
changeset
|
3537 { |
|
bd9c110a1342
(regex_compile) <normal_char>: Pay attention to multibyteness.
Kenichi Handa <handa@m17n.org>
parents:
2615
diff
changeset
|
3538 int c = RE_STRING_CHAR (p + 1, pend - p); |
|
bd9c110a1342
(regex_compile) <normal_char>: Pay attention to multibyteness.
Kenichi Handa <handa@m17n.org>
parents:
2615
diff
changeset
|
3539 |
|
bd9c110a1342
(regex_compile) <normal_char>: Pay attention to multibyteness.
Kenichi Handa <handa@m17n.org>
parents:
2615
diff
changeset
|
3540 if (SINGLE_BYTE_CHAR_P (c)) |
|
bd9c110a1342
(regex_compile) <normal_char>: Pay attention to multibyteness.
Kenichi Handa <handa@m17n.org>
parents:
2615
diff
changeset
|
3541 fastmap[c] = 1; |
|
bd9c110a1342
(regex_compile) <normal_char>: Pay attention to multibyteness.
Kenichi Handa <handa@m17n.org>
parents:
2615
diff
changeset
|
3542 else |
|
bd9c110a1342
(regex_compile) <normal_char>: Pay attention to multibyteness.
Kenichi Handa <handa@m17n.org>
parents:
2615
diff
changeset
|
3543 fastmap[p[1]] = 1; |
|
bd9c110a1342
(regex_compile) <normal_char>: Pay attention to multibyteness.
Kenichi Handa <handa@m17n.org>
parents:
2615
diff
changeset
|
3544 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3545 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
|
3546 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3547 |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3548 case anychar: |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3549 /* 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
|
3550 but we don't bother since it is generally not worth it. */ |
|
2372
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3551 if (!fastmap) break; |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3552 return (RESET_FAIL_STACK (), -1); |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3553 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3554 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3555 case charset_not: |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3556 /* 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
|
3557 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
|
3558 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
|
3559 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
|
3560 if (!fastmap) break; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3561 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
|
3562 j < (1 << BYTEWIDTH); j++) |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3563 fastmap[j] = 1; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3564 /* Fallthrough */ |
| 939 | 3565 case charset: |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3566 if (!fastmap) break; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3567 not = (re_opcode_t) *(p - 1) == charset_not; |
| 939 | 3568 for (j = CHARSET_BITMAP_SIZE (&p[-1]) * BYTEWIDTH - 1, p++; |
| 3569 j >= 0; j--) | |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3570 if (!!(p[j / BYTEWIDTH] & (1 << (j % BYTEWIDTH))) ^ not) |
| 939 | 3571 fastmap[j] = 1; |
| 3572 | |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3573 if ((not && multibyte) |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3574 /* 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
|
3575 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
|
3576 || (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
|
3577 && 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
|
3578 /* 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
|
3579 any character set. */ |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3580 { |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3581 set_fastmap_for_multibyte_characters: |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3582 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
|
3583 { |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3584 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
|
3585 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
|
3586 fastmap[j] = 1; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3587 match_any_multibyte_characters = true; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3588 } |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3589 } |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3590 |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3591 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
|
3592 && match_any_multibyte_characters == false) |
| 939 | 3593 { |
| 3594 /* Set fastmap[I] 1 where I is a base leading code of each | |
| 3595 multibyte character in the range table. */ | |
| 3596 int c, count; | |
| 3597 | |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3598 /* Make P points the range table. `+ 2' is to skip flag |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
3599 bits for a character class. */ |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3600 p += CHARSET_BITMAP_SIZE (&p[-2]) + 2; |
| 939 | 3601 |
|
1965
058a9ce57dd7
1999-09-04 Richard Stallman <rms@gnu.org>
Dave Love <fx@gnu.org>
parents:
1933
diff
changeset
|
3602 /* Extract the number of ranges in range table into COUNT. */ |
| 939 | 3603 EXTRACT_NUMBER_AND_INCR (count, p); |
| 3604 for (; count > 0; count--, p += 2 * 3) /* XXX */ | |
| 3605 { | |
| 3606 /* Extract the start of each range. */ | |
| 3607 EXTRACT_CHARACTER (c, p); | |
| 3608 j = CHAR_CHARSET (c); | |
| 3609 fastmap[CHARSET_LEADING_CODE_BASE (j)] = 1; | |
| 3610 } | |
| 3611 } | |
| 3612 break; | |
| 3613 | |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3614 case syntaxspec: |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3615 case notsyntaxspec: |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3616 if (!fastmap) break; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3617 #ifndef emacs |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3618 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
|
3619 k = *p++; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3620 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
|
3621 if ((SYNTAX (j) == (enum syntaxcode) k) ^ not) |
| 939 | 3622 fastmap[j] = 1; |
| 3623 break; | |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3624 #else /* emacs */ |
| 939 | 3625 /* This match depends on text properties. These end with |
| 3626 aborting optimizations. */ | |
|
2372
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3627 return (RESET_FAIL_STACK (), -1); |
| 939 | 3628 |
| 3629 case categoryspec: | |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3630 case notcategoryspec: |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3631 if (!fastmap) break; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3632 not = (re_opcode_t)p[-1] == notcategoryspec; |
| 939 | 3633 k = *p++; |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3634 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
|
3635 if ((CHAR_HAS_CATEGORY (j, k)) ^ not) |
| 939 | 3636 fastmap[j] = 1; |
| 3637 | |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3638 if (multibyte) |
| 939 | 3639 /* 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
|
3640 whose category is K (or not). */ |
| 939 | 3641 goto set_fastmap_for_multibyte_characters; |
| 3642 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
|
3643 |
|
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 /* All cases after this match the empty string. These end with |
| 941 | 3645 `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
|
3646 |
|
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 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
|
3648 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
|
3649 case after_dot: |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
3650 #endif /* !emacs */ |
| 941 | 3651 case no_op: |
| 3652 case begline: | |
| 3653 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
|
3654 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
|
3655 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
|
3656 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
|
3657 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
|
3658 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
|
3659 case wordend: |
| 941 | 3660 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
|
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 |
|
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 case jump: |
| 941 | 3664 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
|
3665 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
|
3666 /* 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
|
3667 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
|
3668 break; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3669 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
|
3670 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
|
3671 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
3672 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
|
3673 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
|
3674 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
|
3675 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
|
3676 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
|
3677 p++; |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
3678 break; |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
3679 default: |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
3680 continue; |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
3681 }; |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
3682 /* 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
|
3683 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
|
3684 /* Fallthrough */ |
| 941 | 3685 |
| 3686 case on_failure_jump: | |
| 3687 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
|
3688 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
|
3689 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
|
3690 case on_failure_jump_smart: |
| 941 | 3691 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
|
3692 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
|
3693 ; /* 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
|
3694 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
|
3695 return (RESET_FAIL_STACK (), -2); |
| 941 | 3696 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
|
3697 |
|
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 |
|
2371
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
3699 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
|
3700 /* 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
|
3701 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
|
3702 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
|
3703 /* 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
|
3704 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
|
3705 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
|
3706 continue; |
|
3274fb530385
(REGEX_FREE_STACK, RESET_FAIL_STACK): Make them usable as an expression.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2370
diff
changeset
|
3707 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3708 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
|
3709 /* 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
|
3710 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
|
3711 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
|
3712 /* 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
|
3713 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
|
3714 on_failure_jump. */ |
| 941 | 3715 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
|
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 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3718 case set_number_at: |
| 941 | 3719 p += 4; |
| 3720 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
|
3721 |
|
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 |
|
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 case start_memory: |
| 941 | 3724 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
|
3725 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
|
3726 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
|
3727 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3728 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3729 default: |
| 941 | 3730 abort (); /* We have listed all the cases. */ |
| 3731 } /* 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
|
3732 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3733 /* Getting here means we have found the possible starting |
| 941 | 3734 characters for one path of the pattern -- and that the empty |
| 3735 string does not match. We need not follow this path further. | |
| 3736 Instead, look at the next alternative (remembered on the | |
| 3737 stack), or quit if no more. The test at the top of the loop | |
| 3738 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
|
3739 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
|
3740 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
|
3741 } /* 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
|
3742 |
|
2372
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3743 return (RESET_FAIL_STACK (), 0); |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3744 } /* analyse_first */ |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3745 |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3746 /* re_compile_fastmap computes a ``fastmap'' for the compiled pattern in |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3747 BUFP. A fastmap records which of the (1 << BYTEWIDTH) possible |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3748 characters can start a string that matches the pattern. This fastmap |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3749 is used by re_search to skip quickly over impossible starting points. |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3750 |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3751 Character codes above (1 << BYTEWIDTH) are not represented in the |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3752 fastmap, but the leading codes are represented. Thus, the fastmap |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3753 indicates which character sets could start a match. |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3754 |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3755 The caller must supply the address of a (1 << BYTEWIDTH)-byte data |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3756 area as BUFP->fastmap. |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3757 |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3758 We set the `fastmap', `fastmap_accurate', and `can_be_null' fields in |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3759 the pattern buffer. |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3760 |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3761 Returns 0 if we succeed, -2 if an internal error. */ |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3762 |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3763 int |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3764 re_compile_fastmap (bufp) |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3765 struct re_pattern_buffer *bufp; |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3766 { |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3767 char *fastmap = bufp->fastmap; |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3768 int analysis; |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3769 |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3770 assert (fastmap && bufp->buffer); |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3771 |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3772 bzero (fastmap, 1 << BYTEWIDTH); /* Assume nothing's valid. */ |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3773 bufp->fastmap_accurate = 1; /* It will be when we're done. */ |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3774 |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3775 analysis = analyse_first (bufp->buffer, bufp->buffer + bufp->used, |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
3776 fastmap, RE_MULTIBYTE_P (bufp)); |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
3777 bufp->can_be_null = (analysis != 0); |
|
2372
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3778 if (analysis < -1) |
|
c0c46914f4fe
(analyse_first): New function obtained by ripping out most
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2371
diff
changeset
|
3779 return analysis; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3780 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
|
3781 } /* 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
|
3782 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3783 /* 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
|
3784 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
|
3785 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
|
3786 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
|
3787 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
|
3788 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3789 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
|
3790 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
|
3791 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3792 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
|
3793 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
|
3794 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
|
3795 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3796 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
|
3797 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
|
3798 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
|
3799 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
|
3800 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
|
3801 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
|
3802 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3803 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
|
3804 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3805 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
|
3806 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
|
3807 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
|
3808 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
|
3809 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3810 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
|
3811 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3812 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
|
3813 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
|
3814 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
|
3815 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3816 } |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
3817 WEAK_ALIAS (__re_set_registers, re_set_registers) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3818 |
| 941 | 3819 /* 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
|
3820 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3821 /* 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
|
3822 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
|
3823 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3824 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
|
3825 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
|
3826 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
|
3827 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
|
3828 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
|
3829 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
|
3830 { |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3831 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
|
3832 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
|
3833 } |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
3834 WEAK_ALIAS (__re_search, re_search) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3835 |
| 939 | 3836 /* End address of virtual concatenation of string. */ |
| 3837 #define STOP_ADDR_VSTRING(P) \ | |
| 3838 (((P) >= size1 ? string2 + size2 : string1 + size1)) | |
| 3839 | |
| 3840 /* Address of POS in the concatenation of virtual string. */ | |
| 3841 #define POS_ADDR_VSTRING(POS) \ | |
| 3842 (((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
|
3843 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3844 /* 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
|
3845 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
|
3846 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
|
3847 |
|
441
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 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
|
3849 |
|
441
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 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
|
3851 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
|
3852 RANGE. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3853 |
|
441
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 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
|
3855 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
|
3856 subexpressions. |
|
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 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
|
3859 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
|
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 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
|
3862 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
|
3863 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
|
3864 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3865 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
|
3866 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
|
3867 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
|
3868 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
|
3869 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
|
3870 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
|
3871 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
|
3872 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
|
3873 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
|
3874 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3875 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
|
3876 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
|
3877 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
|
3878 register char *fastmap = bufp->fastmap; |
|
501
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
3879 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
|
3880 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
|
3881 int endpos = startpos + range; |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
3882 boolean anchored_start; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3883 |
| 941 | 3884 /* Nonzero if we have to concern multibyte character. */ |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
3885 const boolean multibyte = RE_MULTIBYTE_P (bufp); |
| 939 | 3886 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3887 /* 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
|
3888 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
|
3889 return -1; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3890 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3891 /* 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
|
3892 the virtual concatenation of STRING1 and STRING2. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3893 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
|
3894 if (endpos < 0) |
|
985fe9826996
(re_search_2): Use 0, not -1, as the lower bound
Richard Stallman <rms@gnu.org>
parents:
481
diff
changeset
|
3895 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
|
3896 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
|
3897 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
|
3898 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3899 /* 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
|
3900 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
|
3901 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
|
3902 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3903 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
|
3904 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
|
3905 else |
|
1329
818db3848f2b
(re_search_2): Fix handling of at_dot.
Richard Stallman <rms@gnu.org>
parents:
1328
diff
changeset
|
3906 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
|
3907 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3908 |
|
481
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3909 #ifdef emacs |
|
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3910 /* 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
|
3911 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
|
3912 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
|
3913 { |
|
1329
818db3848f2b
(re_search_2): Fix handling of at_dot.
Richard Stallman <rms@gnu.org>
parents:
1328
diff
changeset
|
3914 range = PT_BYTE - BEGV_BYTE - startpos; |
|
818db3848f2b
(re_search_2): Fix handling of at_dot.
Richard Stallman <rms@gnu.org>
parents:
1328
diff
changeset
|
3915 if (range < 0) |
|
481
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3916 return -1; |
|
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3917 } |
|
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3918 #endif /* emacs */ |
|
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3919 |
|
441
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 /* 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
|
3921 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
|
3922 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
|
3923 return -2; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3924 |
|
678
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3925 /* See whether the pattern is anchored. */ |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
3926 anchored_start = (bufp->buffer[0] == begline); |
|
678
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3927 |
| 939 | 3928 #ifdef emacs |
|
1321
a37088328c87
(re_match_2, re_search_2): Convert position to a charpos,
Karl Heuer <kwzh@gnu.org>
parents:
1313
diff
changeset
|
3929 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
|
3930 { |
|
2350
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
3931 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
|
3932 |
|
a37088328c87
(re_match_2, re_search_2): Convert position to a charpos,
Karl Heuer <kwzh@gnu.org>
parents:
1313
diff
changeset
|
3933 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
|
3934 } |
| 939 | 3935 #endif |
| 3936 | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3937 /* 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
|
3938 for (;;) |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3939 { |
|
678
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3940 /* If the pattern is anchored, |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3941 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
|
3942 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
|
3943 because that case doesn't repeat. */ |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3944 if (anchored_start && startpos > 0) |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3945 { |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
3946 if (! ((startpos <= size1 ? string1[startpos - 1] |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
3947 : string2[startpos - size1 - 1]) |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
3948 == '\n')) |
|
678
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3949 goto advance; |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3950 } |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3951 |
|
441
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 /* If a fastmap is supplied, skip quickly over characters that |
| 941 | 3953 cannot be the start of a match. If the pattern can match the |
| 3954 null string, however, we don't need to skip characters; we want | |
| 3955 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
|
3956 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
|
3957 { |
|
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
|
3958 register re_char *d; |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3959 register unsigned int buf_ch; |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3960 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3961 d = POS_ADDR_VSTRING (startpos); |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3962 |
| 941 | 3963 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
|
3964 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3965 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
|
3966 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
|
3967 |
| 941 | 3968 if (startpos < size1 && startpos + range >= size1) |
| 3969 lim = range - (size1 - startpos); | |
| 939 | 3970 |
| 941 | 3971 /* Written out as an if-else to avoid testing `translate' |
| 3972 inside the loop. */ | |
|
1335
97f50084cc62
(re_search_2): Fix indentation.
Andreas Schwab <schwab@suse.de>
parents:
1329
diff
changeset
|
3973 if (RE_TRANSLATE_P (translate)) |
|
97f50084cc62
(re_search_2): Fix indentation.
Andreas Schwab <schwab@suse.de>
parents:
1329
diff
changeset
|
3974 { |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3975 if (multibyte) |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3976 while (range > lim) |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3977 { |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3978 int buf_charlen; |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3979 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3980 buf_ch = STRING_CHAR_AND_LENGTH (d, range - lim, |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3981 buf_charlen); |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3982 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3983 buf_ch = RE_TRANSLATE (translate, buf_ch); |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3984 if (buf_ch >= 0400 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3985 || fastmap[buf_ch]) |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3986 break; |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3987 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3988 range -= buf_charlen; |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3989 d += buf_charlen; |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3990 } |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3991 else |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3992 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
|
3993 && !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
|
3994 { |
|
24423cbaf6a9
(re_search_2): Don't use ++ inside RE_TRANSLATE.
Richard Stallman <rms@gnu.org>
parents:
1342
diff
changeset
|
3995 d++; |
|
24423cbaf6a9
(re_search_2): Don't use ++ inside RE_TRANSLATE.
Richard Stallman <rms@gnu.org>
parents:
1342
diff
changeset
|
3996 range--; |
|
24423cbaf6a9
(re_search_2): Don't use ++ inside RE_TRANSLATE.
Richard Stallman <rms@gnu.org>
parents:
1342
diff
changeset
|
3997 } |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
3998 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3999 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
|
4000 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
|
4001 { |
|
24423cbaf6a9
(re_search_2): Don't use ++ inside RE_TRANSLATE.
Richard Stallman <rms@gnu.org>
parents:
1342
diff
changeset
|
4002 d++; |
|
24423cbaf6a9
(re_search_2): Don't use ++ inside RE_TRANSLATE.
Richard Stallman <rms@gnu.org>
parents:
1342
diff
changeset
|
4003 range--; |
|
24423cbaf6a9
(re_search_2): Don't use ++ inside RE_TRANSLATE.
Richard Stallman <rms@gnu.org>
parents:
1342
diff
changeset
|
4004 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4005 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4006 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
|
4007 } |
| 941 | 4008 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
|
4009 { |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
4010 int room = (startpos >= size1 |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
4011 ? size2 + size1 - startpos |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
4012 : size1 - startpos); |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
4013 buf_ch = RE_STRING_CHAR (d, room); |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
4014 buf_ch = TRANSLATE (buf_ch); |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4015 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4016 if (! (buf_ch >= 0400 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4017 || 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
|
4018 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
|
4019 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4020 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4021 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4022 /* 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
|
4023 if (range >= 0 && startpos == total_size && fastmap |
| 941 | 4024 && !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
|
4025 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
|
4026 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4027 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
|
4028 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
|
4029 #ifndef REGEX_MALLOC |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
4030 # ifdef C_ALLOCA |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4031 alloca (0); |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
4032 # 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
|
4033 #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
|
4034 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4035 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
|
4036 return startpos; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4037 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4038 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
|
4039 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
|
4040 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4041 advance: |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4042 if (!range) |
| 941 | 4043 break; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4044 else if (range > 0) |
| 941 | 4045 { |
| 939 | 4046 /* Update STARTPOS to the next character boundary. */ |
| 4047 if (multibyte) | |
| 4048 { | |
|
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
|
4049 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
|
4050 re_char *pend = STOP_ADDR_VSTRING (startpos); |
| 939 | 4051 int len = MULTIBYTE_FORM_LENGTH (p, pend - p); |
| 4052 | |
| 4053 range -= len; | |
| 4054 if (range < 0) | |
| 4055 break; | |
| 4056 startpos += len; | |
| 4057 } | |
| 4058 else | |
| 4059 { | |
|
961
6959c7741ed2
(re_search_2): Cast result of POS_ADDR_VSTRING.
Richard Stallman <rms@gnu.org>
parents:
942
diff
changeset
|
4060 range--; |
|
6959c7741ed2
(re_search_2): Cast result of POS_ADDR_VSTRING.
Richard Stallman <rms@gnu.org>
parents:
942
diff
changeset
|
4061 startpos++; |
|
6959c7741ed2
(re_search_2): Cast result of POS_ADDR_VSTRING.
Richard Stallman <rms@gnu.org>
parents:
942
diff
changeset
|
4062 } |
| 679 | 4063 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4064 else |
| 941 | 4065 { |
| 4066 range++; | |
| 4067 startpos--; | |
| 939 | 4068 |
| 4069 /* Update STARTPOS to the previous character boundary. */ | |
| 4070 if (multibyte) | |
| 4071 { | |
|
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
|
4072 re_char *p = POS_ADDR_VSTRING (startpos); |
| 939 | 4073 int len = 0; |
| 4074 | |
| 4075 /* 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
|
4076 while (!CHAR_HEAD_P (*p)) |
| 939 | 4077 p--, len++; |
| 4078 | |
| 4079 /* Adjust it. */ | |
| 4080 #if 0 /* XXX */ | |
| 4081 if (MULTIBYTE_FORM_LENGTH (p, len + 1) != (len + 1)) | |
| 4082 ; | |
| 4083 else | |
| 4084 #endif | |
| 4085 { | |
| 4086 range += len; | |
| 4087 if (range > 0) | |
| 4088 break; | |
| 4089 | |
| 4090 startpos -= len; | |
| 4091 } | |
| 4092 } | |
| 941 | 4093 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4094 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4095 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
|
4096 } /* re_search_2 */ |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
4097 WEAK_ALIAS (__re_search_2, re_search_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
|
4098 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4099 /* 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
|
4100 |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
4101 static int bcmp_translate _RE_ARGS((re_char *s1, re_char *s2, |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
4102 register int len, |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
4103 RE_TRANSLATE_TYPE translate, |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
4104 const int 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
|
4105 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4106 /* 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
|
4107 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
|
4108 #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
|
4109 (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
|
4110 ? ((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
|
4111 : ((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
|
4112 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4113 /* Call before fetching a character with *d. This switches over to |
|
2438
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4114 string2 if necessary. |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4115 Check re_match_2_internal for a discussion of why end_match_2 might |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4116 not be within string2 (but be equal to end_match_1 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
|
4117 #define PREFETCH() \ |
| 941 | 4118 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
|
4119 { \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4120 /* End of string2 => fail. */ \ |
| 941 | 4121 if (dend == end_match_2) \ |
| 4122 goto fail; \ | |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
4123 /* End of string1 => advance to string2. */ \ |
| 941 | 4124 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
|
4125 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
|
4126 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4127 |
|
2551
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
4128 /* Call before fetching a char with *d if you already checked other limits. |
|
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
4129 This is meant for use in lookahead operations like wordend, etc.. |
|
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
4130 where we might need to look at parts of the string that might be |
|
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
4131 outside of the LIMITs (i.e past `stop'). */ |
|
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
4132 #define PREFETCH_NOLIMIT() \ |
|
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
4133 if (d == end1) \ |
|
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
4134 { \ |
|
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
4135 d = string2; \ |
|
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
4136 dend = end_match_2; \ |
|
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
4137 } \ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4138 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4139 /* Test if at very beginning or at very end of the virtual concatenation |
| 941 | 4140 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
|
4141 #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
|
4142 #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
|
4143 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4144 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4145 /* 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
|
4146 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
|
4147 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
|
4148 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
|
4149 #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
|
4150 (SYNTAX ((d) == end1 ? *string2 \ |
| 941 | 4151 : (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
|
4152 == 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
|
4153 |
|
521
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
4154 /* Disabled due to a compiler bug -- see comment at case wordbound */ |
| 939 | 4155 |
| 4156 /* The comment at case wordbound is following one, but we don't use | |
| 4157 AT_WORD_BOUNDARY anymore to support multibyte form. | |
| 4158 | |
| 4159 The DEC Alpha C compiler 3.x generates incorrect code for the | |
| 941 | 4160 test WORDCHAR_P (d - 1) != WORDCHAR_P (d) in the expansion of |
| 4161 AT_WORD_BOUNDARY, so this code is disabled. Expanding the | |
| 939 | 4162 macro and introducing temporary variables works around the bug. */ |
| 4163 | |
|
521
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
4164 #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
|
4165 /* 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
|
4166 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
|
4167 #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
|
4168 (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
|
4169 || WORDCHAR_P (d - 1) != WORDCHAR_P (d)) |
|
521
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
4170 #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
|
4171 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4172 /* 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
|
4173 #ifdef MATCH_MAY_ALLOCATE |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
4174 # define FREE_VAR(var) if (var) { REGEX_FREE (var); var = NULL; } else |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
4175 # define FREE_VARIABLES() \ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4176 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
|
4177 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
|
4178 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
|
4179 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
|
4180 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
|
4181 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
|
4182 } 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
|
4183 #else |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
4184 # define FREE_VARIABLES() ((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
|
4185 #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
|
4186 |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4187 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4188 /* 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
|
4189 |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4190 /* 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
|
4191 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
|
4192 static unsigned char * |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4193 skip_one_char (p) |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4194 unsigned char *p; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4195 { |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4196 switch (SWITCH_ENUM_CAST (*p++)) |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4197 { |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4198 case anychar: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4199 break; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4200 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4201 case exactn: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4202 p += *p + 1; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4203 break; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4204 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4205 case charset_not: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4206 case charset: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4207 if (CHARSET_RANGE_TABLE_EXISTS_P (p - 1)) |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4208 { |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4209 int mcnt; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4210 p = CHARSET_RANGE_TABLE (p - 1); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4211 EXTRACT_NUMBER_AND_INCR (mcnt, p); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4212 p = CHARSET_RANGE_TABLE_END (p, mcnt); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4213 } |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4214 else |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4215 p += 1 + CHARSET_BITMAP_SIZE (p - 1); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4216 break; |
|
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 case syntaxspec: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4219 case notsyntaxspec: |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
4220 #ifdef emacs |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4221 case categoryspec: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4222 case notcategoryspec: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4223 #endif /* emacs */ |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4224 p++; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4225 break; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4226 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4227 default: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4228 p = NULL; |
|
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 return p; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4231 } |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4232 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4233 |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4234 /* 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
|
4235 static unsigned char * |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4236 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
|
4237 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
|
4238 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4239 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
|
4240 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
|
4241 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4242 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
|
4243 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4244 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
|
4245 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
|
4246 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
|
4247 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
|
4248 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
|
4249 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
|
4250 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
|
4251 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
|
4252 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
|
4253 break; |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4254 default: |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4255 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
|
4256 } |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4257 } |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4258 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
|
4259 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
|
4260 } |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4261 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4262 /* 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
|
4263 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
|
4264 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
|
4265 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
|
4266 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
|
4267 { |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4268 re_opcode_t op2; |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
4269 const boolean multibyte = RE_MULTIBYTE_P (bufp); |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4270 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
|
4271 |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4272 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
|
4273 && 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
|
4274 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4275 /* 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
|
4276 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
|
4277 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
|
4278 match at least one of that. */ |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4279 p2 = skip_noops (p2, pend); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4280 /* 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
|
4281 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
|
4282 /* p1 = skip_noops (p1, pend); */ |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4283 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4284 assert (p1 >= bufp->buffer && p1 < pend |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4285 && p2 >= bufp->buffer && p2 <= pend); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4286 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4287 op2 = p2 == pend ? succeed : *p2; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4288 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4289 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
|
4290 { |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4291 case succeed: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4292 case endbuf: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4293 /* 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
|
4294 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
|
4295 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4296 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
|
4297 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
|
4298 } |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4299 break; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4300 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4301 case endline: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4302 case exactn: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4303 { |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4304 register unsigned int c |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4305 = (re_opcode_t) *p2 == endline ? '\n' |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4306 : RE_STRING_CHAR(p2 + 2, pend - p2 - 2); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4307 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4308 if ((re_opcode_t) *p1 == exactn) |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4309 { |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4310 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
|
4311 { |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4312 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
|
4313 return 1; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4314 } |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4315 } |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4316 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4317 else if ((re_opcode_t) *p1 == charset |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4318 || (re_opcode_t) *p1 == charset_not) |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4319 { |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4320 int not = (re_opcode_t) *p1 == charset_not; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4321 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4322 /* 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
|
4323 at `p1'. */ |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4324 if (SINGLE_BYTE_CHAR_P (c)) |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4325 { |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4326 if (c < CHARSET_BITMAP_SIZE (p1) * BYTEWIDTH |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4327 && p1[2 + c / BYTEWIDTH] & (1 << (c % BYTEWIDTH))) |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4328 not = !not; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4329 } |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4330 else if (CHARSET_RANGE_TABLE_EXISTS_P (p1)) |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4331 CHARSET_LOOKUP_RANGE_TABLE (not, c, p1); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4332 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4333 /* `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
|
4334 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
|
4335 if (!not) |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4336 { |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4337 DEBUG_PRINT1 (" No match => fast loop.\n"); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4338 return 1; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4339 } |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4340 } |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4341 else if ((re_opcode_t) *p1 == anychar |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4342 && c == '\n') |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4343 { |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4344 DEBUG_PRINT1 (" . != \\n => fast loop.\n"); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4345 return 1; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4346 } |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4347 } |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4348 break; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4349 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4350 case charset: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4351 case charset_not: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4352 { |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4353 if ((re_opcode_t) *p1 == exactn) |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4354 /* Reuse the code above. */ |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4355 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
|
4356 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4357 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4358 /* 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
|
4359 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
|
4360 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
|
4361 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
|
4362 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4363 /* 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
|
4364 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
|
4365 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
|
4366 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
|
4367 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
|
4368 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4369 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
|
4370 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
|
4371 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
|
4372 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4373 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
|
4374 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4375 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
|
4376 /* 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
|
4377 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
|
4378 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
|
4379 (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
|
4380 && 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
|
4381 idx++) |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4382 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
|
4383 break; |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4384 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4385 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
|
4386 || 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
|
4387 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4388 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
|
4389 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
|
4390 } |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4391 } |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4392 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
|
4393 || (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
|
4394 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4395 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
|
4396 /* 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
|
4397 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
|
4398 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
|
4399 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
|
4400 || (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
|
4401 && ((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
|
4402 break; |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4403 |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4404 if (idx == p2[1]) |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4405 { |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4406 DEBUG_PRINT1 (" No match => fast loop.\n"); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4407 return 1; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4408 } |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4409 } |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4410 } |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4411 } |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4412 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4413 case wordend: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4414 case notsyntaxspec: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4415 return ((re_opcode_t) *p1 == syntaxspec |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4416 && p1[1] == (op2 == wordend ? Sword : p2[1])); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4417 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4418 case wordbeg: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4419 case syntaxspec: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4420 return ((re_opcode_t) *p1 == notsyntaxspec |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4421 && p1[1] == (op2 == wordend ? Sword : p2[1])); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4422 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4423 case wordbound: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4424 return (((re_opcode_t) *p1 == notsyntaxspec |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4425 || (re_opcode_t) *p1 == syntaxspec) |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4426 && p1[1] == Sword); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4427 |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
4428 #ifdef emacs |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4429 case categoryspec: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4430 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
|
4431 case notcategoryspec: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4432 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
|
4433 #endif /* emacs */ |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4434 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4435 default: |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
4436 ; |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4437 } |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4438 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4439 /* 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
|
4440 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
|
4441 } |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4442 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4443 |
|
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 /* 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
|
4445 |
| 941 | 4446 #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
|
4447 /* 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
|
4448 |
|
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 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
|
4450 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
|
4451 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
|
4452 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
|
4453 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
|
4454 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
|
4455 { |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
4456 int result = re_match_2_internal (bufp, NULL, 0, (re_char*) string, 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
|
4457 pos, regs, size); |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
4458 # if defined C_ALLOCA && !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
|
4459 alloca (0); |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
4460 # 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
|
4461 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
|
4462 } |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
4463 WEAK_ALIAS (__re_match, re_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
|
4464 #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
|
4465 |
| 939 | 4466 #ifdef emacs |
| 4467 /* In Emacs, this is the string or buffer in which we | |
| 941 | 4468 are matching. It is used for looking up syntax properties. */ |
| 939 | 4469 Lisp_Object re_match_object; |
| 4470 #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
|
4471 |
|
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 /* 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
|
4473 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
|
4474 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
|
4475 matching at STOP. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4476 |
|
441
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 If REGS is non-null and the `no_sub' field of BUFP is nonzero, we |
| 941 | 4478 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
|
4479 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
|
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 We return -1 if no match, -2 if an internal error (such as the |
| 941 | 4482 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
|
4483 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
|
4484 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4485 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
|
4486 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
|
4487 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
|
4488 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
|
4489 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
|
4490 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
|
4491 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
|
4492 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
|
4493 { |
| 939 | 4494 int result; |
| 941 | 4495 |
| 939 | 4496 #ifdef emacs |
|
1321
a37088328c87
(re_match_2, re_search_2): Convert position to a charpos,
Karl Heuer <kwzh@gnu.org>
parents:
1313
diff
changeset
|
4497 int charpos; |
|
a37088328c87
(re_match_2, re_search_2): Convert position to a charpos,
Karl Heuer <kwzh@gnu.org>
parents:
1313
diff
changeset
|
4498 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
|
4499 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
|
4500 SETUP_SYNTAX_TABLE_FOR_OBJECT (re_match_object, charpos, 1); |
| 939 | 4501 #endif |
| 4502 | |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
4503 result = re_match_2_internal (bufp, (re_char*) string1, size1, |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
4504 (re_char*) string2, size2, |
|
1321
a37088328c87
(re_match_2, re_search_2): Convert position to a charpos,
Karl Heuer <kwzh@gnu.org>
parents:
1313
diff
changeset
|
4505 pos, regs, stop); |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
4506 #if defined C_ALLOCA && !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
|
4507 alloca (0); |
|
2615
31b85fc23c04
(re_match, re_match_2): Protect calls to alloca (0).
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2581
diff
changeset
|
4508 #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
|
4509 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
|
4510 } |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
4511 WEAK_ALIAS (__re_match_2, re_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
|
4512 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4513 /* This is a separate function so that we can force an alloca cleanup |
| 941 | 4514 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
|
4515 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
|
4516 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
|
4517 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
|
4518 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
|
4519 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
|
4520 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
|
4521 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
|
4522 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
|
4523 { |
|
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 /* 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
|
4525 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
|
4526 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
|
4527 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
|
4528 |
|
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 /* 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
|
4530 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
|
4531 |
|
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 /* Pointers into string1 and string2, just past the last characters in |
| 941 | 4533 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
|
4534 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
|
4535 |
|
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 /* 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
|
4537 re_char *d, *dend; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4538 |
|
2350
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
4539 /* 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
|
4540 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
|
4541 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
|
4542 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
|
4543 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
|
4544 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4545 /* 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
|
4546 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
|
4547 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
|
4548 |
| 941 | 4549 /* 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
|
4550 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
|
4551 |
| 941 | 4552 /* Nonzero if we have to concern multibyte character. */ |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
4553 const boolean multibyte = RE_MULTIBYTE_P (bufp); |
| 939 | 4554 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4555 /* 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
|
4556 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
|
4557 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
|
4558 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
|
4559 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
|
4560 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
|
4561 scanning the strings. */ |
| 941 | 4562 #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
|
4563 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
|
4564 #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
|
4565 #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
|
4566 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
|
4567 #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
|
4568 |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
4569 #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
|
4570 /* 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
|
4571 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
|
4572 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
|
4573 #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
|
4574 |
|
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 /* We fill all the registers internally, independent of what we |
| 941 | 4576 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
|
4577 an element for register zero. */ |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
4578 size_t num_regs = bufp->re_nsub + 1; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4579 |
|
441
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 /* 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
|
4581 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
|
4582 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
|
4583 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
|
4584 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
|
4585 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
|
4586 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
|
4587 #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
|
4588 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
|
4589 #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
|
4590 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4591 /* 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
|
4592 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
|
4593 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
|
4594 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
|
4595 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
|
4596 #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
|
4597 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
|
4598 #endif |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4599 |
|
441
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 /* 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
|
4601 allocate space for that if we're not allocating space for anything |
| 941 | 4602 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
|
4603 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
|
4604 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
|
4605 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
|
4606 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
|
4607 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
|
4608 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
|
4609 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4610 #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
|
4611 /* Counts the total number of registers pushed. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4612 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
|
4613 #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
|
4614 |
|
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 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
|
4616 |
|
441
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 INIT_FAIL_STACK (); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4618 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4619 #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
|
4620 /* 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
|
4621 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
|
4622 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
|
4623 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
|
4624 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
|
4625 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
|
4626 { |
|
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
|
4627 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
|
4628 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
|
4629 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
|
4630 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
|
4631 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4632 if (!(regstart && regend && best_regstart && best_regend)) |
| 941 | 4633 { |
| 4634 FREE_VARIABLES (); | |
| 4635 return -2; | |
| 4636 } | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4637 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4638 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
|
4639 { |
|
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 /* We must initialize all our variables to NULL, so that |
| 941 | 4641 `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
|
4642 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
|
4643 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4644 #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
|
4645 |
|
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 /* 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
|
4647 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
|
4648 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4649 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
|
4650 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
|
4651 } |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4652 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4653 /* 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
|
4654 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
|
4655 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
|
4656 for (mcnt = 1; mcnt < num_regs; mcnt++) |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
4657 regstart[mcnt] = regend[mcnt] = NULL; |
|
2350
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
4658 |
|
441
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 /* We move `string1' into `string2' if the latter's empty -- but not if |
| 941 | 4660 `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
|
4661 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
|
4662 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4663 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
|
4664 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
|
4665 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
|
4666 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
|
4667 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4668 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
|
4669 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
|
4670 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4671 /* `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
|
4672 `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
|
4673 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
|
4674 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
|
4675 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
|
4676 equal `string2'. */ |
|
2438
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4677 if (pos >= 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
|
4678 { |
|
2438
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4679 /* Only match within string2. */ |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4680 d = string2 + pos - size1; |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4681 dend = end_match_2 = string2 + stop - size1; |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4682 end_match_1 = end1; /* Just to give it a value. */ |
|
441
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 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4684 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
|
4685 { |
|
2551
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
4686 if (stop < size1) |
|
2438
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4687 { |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4688 /* Only match within string1. */ |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4689 end_match_1 = string1 + stop; |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4690 /* BEWARE! |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4691 When we reach end_match_1, PREFETCH normally switches to string2. |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4692 But in the present case, this means that just doing a PREFETCH |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4693 makes us jump from `stop' to `gap' within the string. |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4694 What we really want here is for the search to stop as |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4695 soon as we hit end_match_1. That's why we set end_match_2 |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4696 to end_match_1 (since PREFETCH fails as soon as we hit |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4697 end_match_2). */ |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4698 end_match_2 = end_match_1; |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4699 } |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4700 else |
|
2551
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
4701 { /* It's important to use this code when stop == size so that |
|
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
4702 moving `d' from end1 to string2 will not prevent the d == dend |
|
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
4703 check from catching the end of string. */ |
|
2438
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4704 end_match_1 = end1; |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4705 end_match_2 = string2 + stop - size1; |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4706 } |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4707 d = string1 + pos; |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
4708 dend = end_match_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
|
4709 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4710 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4711 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
|
4712 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
|
4713 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
|
4714 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
|
4715 DEBUG_PRINT1 ("'\n"); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4716 |
| 941 | 4717 /* 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
|
4718 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
|
4719 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
|
4720 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
|
4721 { |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
4722 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
|
4723 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4724 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
|
4725 { /* End of pattern means we might have succeeded. */ |
| 941 | 4726 DEBUG_PRINT1 ("end of pattern ... "); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4727 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4728 /* If we haven't matched the entire string, and we want the |
| 941 | 4729 longest match, try backtracking. */ |
| 4730 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
|
4731 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4732 /* 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
|
4733 as the best previous match. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4734 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
|
4735 == 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
|
4736 /* 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
|
4737 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
|
4738 |
|
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 /* AIX compiler got confused when this was combined |
| 941 | 4740 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
|
4741 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
|
4742 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
|
4743 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
|
4744 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
|
4745 |
| 941 | 4746 DEBUG_PRINT1 ("backtracking.\n"); |
| 4747 | |
| 4748 if (!FAIL_STACK_EMPTY ()) | |
| 4749 { /* More failure points to try. */ | |
| 4750 | |
| 4751 /* If exceeds best match so far, save it. */ | |
| 4752 if (!best_regs_set || best_match_p) | |
| 4753 { | |
| 4754 best_regs_set = true; | |
| 4755 match_end = d; | |
| 4756 | |
| 4757 DEBUG_PRINT1 ("\nSAVING match as best so far.\n"); | |
| 4758 | |
| 4759 for (mcnt = 1; mcnt < num_regs; mcnt++) | |
| 4760 { | |
| 4761 best_regstart[mcnt] = regstart[mcnt]; | |
| 4762 best_regend[mcnt] = regend[mcnt]; | |
| 4763 } | |
| 4764 } | |
| 4765 goto fail; | |
| 4766 } | |
| 4767 | |
| 4768 /* If no failure points, don't restore garbage. And if | |
| 4769 last match is real best match, don't restore second | |
| 4770 best one. */ | |
| 4771 else if (best_regs_set && !best_match_p) | |
| 4772 { | |
| 4773 restore_best_regs: | |
| 4774 /* Restore best match. It may happen that `dend == | |
| 4775 end_match_1' while the restored d is in string2. | |
| 4776 For example, the pattern `x.*y.*z' against the | |
| 4777 strings `x-' and `y-z-', if the two strings are | |
| 4778 not consecutive in memory. */ | |
| 4779 DEBUG_PRINT1 ("Restoring best registers.\n"); | |
| 4780 | |
| 4781 d = match_end; | |
| 4782 dend = ((d >= string1 && d <= end1) | |
| 4783 ? 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
|
4784 |
|
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 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
|
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 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
|
4788 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
|
4789 } |
| 941 | 4790 } |
| 4791 } /* 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
|
4792 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4793 succeed_label: |
| 941 | 4794 DEBUG_PRINT1 ("Accepting match.\n"); |
| 4795 | |
| 4796 /* If caller wants register contents data back, do it. */ | |
| 4797 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
|
4798 { |
| 941 | 4799 /* Have the register data arrays been allocated? */ |
| 4800 if (bufp->regs_allocated == REGS_UNALLOCATED) | |
| 4801 { /* No. So allocate them with malloc. We need one | |
| 4802 extra element beyond `num_regs' for the `-1' marker | |
| 4803 GNU code uses. */ | |
| 4804 regs->num_regs = MAX (RE_NREGS, num_regs + 1); | |
| 4805 regs->start = TALLOC (regs->num_regs, regoff_t); | |
| 4806 regs->end = TALLOC (regs->num_regs, regoff_t); | |
| 4807 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
|
4808 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4809 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
|
4810 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
|
4811 } |
| 941 | 4812 bufp->regs_allocated = REGS_REALLOCATE; |
| 4813 } | |
| 4814 else if (bufp->regs_allocated == REGS_REALLOCATE) | |
| 4815 { /* Yes. If we need more elements than were already | |
| 4816 allocated, reallocate them. If we need fewer, just | |
| 4817 leave it alone. */ | |
| 4818 if (regs->num_regs < num_regs + 1) | |
| 4819 { | |
| 4820 regs->num_regs = num_regs + 1; | |
| 4821 RETALLOC (regs->start, regs->num_regs, regoff_t); | |
| 4822 RETALLOC (regs->end, regs->num_regs, regoff_t); | |
| 4823 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
|
4824 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4825 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
|
4826 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
|
4827 } |
| 941 | 4828 } |
| 4829 } | |
| 4830 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
|
4831 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4832 /* These braces fend off a "empty body in an else-statement" |
| 941 | 4833 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
|
4834 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
|
4835 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4836 |
| 941 | 4837 /* Convert the pointer data in `regstart' and `regend' to |
| 4838 indices. Register zero has to be set differently, | |
| 4839 since we haven't kept track of any info for it. */ | |
| 4840 if (regs->num_regs > 0) | |
| 4841 { | |
| 4842 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
|
4843 regs->end[0] = POINTER_TO_OFFSET (d); |
| 941 | 4844 } |
| 4845 | |
| 4846 /* Go through the first `min (num_regs, regs->num_regs)' | |
| 4847 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
|
4848 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
|
4849 { |
| 941 | 4850 if (REG_UNSET (regstart[mcnt]) || REG_UNSET (regend[mcnt])) |
| 4851 regs->start[mcnt] = regs->end[mcnt] = -1; | |
| 4852 else | |
| 4853 { | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4854 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
|
4855 = (regoff_t) POINTER_TO_OFFSET (regstart[mcnt]); |
| 941 | 4856 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
|
4857 = (regoff_t) POINTER_TO_OFFSET (regend[mcnt]); |
| 941 | 4858 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4859 } |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4860 |
| 941 | 4861 /* If the regs structure we return has more elements than |
| 4862 were in the pattern, set the extra elements to -1. If | |
| 4863 we (re)allocated the registers, this is the case, | |
| 4864 because we always allocate enough to have at least one | |
| 4865 -1 at the end. */ | |
| 4866 for (mcnt = num_regs; mcnt < regs->num_regs; mcnt++) | |
| 4867 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
|
4868 } /* 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
|
4869 |
| 941 | 4870 DEBUG_PRINT4 ("%u failure points pushed, %u popped (%u remain).\n", |
| 4871 nfailure_points_pushed, nfailure_points_popped, | |
| 4872 nfailure_points_pushed - nfailure_points_popped); | |
| 4873 DEBUG_PRINT2 ("%u registers pushed.\n", num_regs_pushed); | |
| 4874 | |
|
2350
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
4875 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
|
4876 |
| 941 | 4877 DEBUG_PRINT2 ("Returning %d from re_match_2.\n", mcnt); |
| 4878 | |
| 4879 FREE_VARIABLES (); | |
| 4880 return mcnt; | |
| 4881 } | |
| 4882 | |
| 4883 /* 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
|
4884 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
|
4885 { |
| 941 | 4886 /* Ignore these. Used to ignore the n of succeed_n's which |
| 4887 currently have n == 0. */ | |
| 4888 case no_op: | |
| 4889 DEBUG_PRINT1 ("EXECUTING no_op.\n"); | |
| 4890 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
|
4891 |
|
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 succeed: |
| 941 | 4893 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
|
4894 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
|
4895 |
| 941 | 4896 /* Match the next n pattern characters exactly. The following |
| 4897 byte in the pattern defines n, and the n bytes after that | |
| 4898 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
|
4899 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
|
4900 mcnt = *p++; |
| 941 | 4901 DEBUG_PRINT2 ("EXECUTING exactn %d.\n", mcnt); |
| 4902 | |
|
2350
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
4903 /* 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
|
4904 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
|
4905 |
| 941 | 4906 /* This is written out as an if-else so we don't waste time |
| 4907 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
|
4908 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
|
4909 { |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4910 if (multibyte) |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4911 do |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4912 { |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4913 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
|
4914 unsigned int pat_ch, buf_ch; |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4915 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4916 PREFETCH (); |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4917 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
|
4918 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
|
4919 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4920 if (RE_TRANSLATE (translate, buf_ch) |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4921 != 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
|
4922 { |
|
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
4923 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
|
4924 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
|
4925 } |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4926 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4927 p += pat_charlen; |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4928 d += buf_charlen; |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4929 mcnt -= pat_charlen; |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4930 } |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4931 while (mcnt > 0); |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4932 else |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4933 do |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4934 { |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4935 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
|
4936 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
|
4937 { |
|
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
4938 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
|
4939 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
|
4940 } |
|
1381
24423cbaf6a9
(re_search_2): Don't use ++ inside RE_TRANSLATE.
Richard Stallman <rms@gnu.org>
parents:
1342
diff
changeset
|
4941 d++; |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4942 } |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4943 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
|
4944 } |
|
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 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
|
4946 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4947 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
|
4948 { |
|
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 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
|
4950 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
|
4951 { |
|
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
4952 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
|
4953 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
|
4954 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4955 } |
|
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 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
|
4957 } |
| 941 | 4958 break; |
| 4959 | |
| 4960 | |
| 4961 /* 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
|
4962 case anychar: |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4963 { |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4964 int buf_charlen; |
|
1312
a9a56c9deb21
(re_match_2_internal): Declare buf_ch unsigned int.
Richard Stallman <rms@gnu.org>
parents:
1297
diff
changeset
|
4965 unsigned int buf_ch; |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4966 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4967 DEBUG_PRINT1 ("EXECUTING anychar.\n"); |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4968 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4969 PREFETCH (); |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
4970 buf_ch = RE_STRING_CHAR_AND_LENGTH (d, dend - d, buf_charlen); |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4971 buf_ch = TRANSLATE (buf_ch); |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4972 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4973 if ((!(bufp->syntax & RE_DOT_NEWLINE) |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4974 && buf_ch == '\n') |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4975 || ((bufp->syntax & RE_DOT_NOT_NULL) |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4976 && buf_ch == '\000')) |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4977 goto fail; |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4978 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4979 DEBUG_PRINT2 (" Matched `%d'.\n", *d); |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4980 d += buf_charlen; |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
4981 } |
|
441
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 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
|
4983 |
|
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 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
|
4986 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
|
4987 { |
| 939 | 4988 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
|
4989 boolean not = (re_opcode_t) *(p - 1) == charset_not; |
| 939 | 4990 int len; |
| 4991 | |
| 4992 /* Start of actual range_table, or end of bitmap if there is no | |
| 4993 range table. */ | |
| 4994 unsigned char *range_table; | |
| 4995 | |
|
1933
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
4996 /* Nonzero if there is a range table. */ |
| 939 | 4997 int range_table_exists; |
| 4998 | |
|
1933
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
4999 /* 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
|
5000 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
|
5001 int count = 0; |
| 939 | 5002 |
| 941 | 5003 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
|
5004 |
| 939 | 5005 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
|
5006 |
| 939 | 5007 if (range_table_exists) |
|
1933
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5008 { |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5009 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
|
5010 EXTRACT_NUMBER_AND_INCR (count, range_table); |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5011 } |
| 939 | 5012 |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5013 PREFETCH (); |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5014 c = RE_STRING_CHAR_AND_LENGTH (d, dend - d, len); |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5015 c = TRANSLATE (c); /* The character to match. */ |
| 939 | 5016 |
| 5017 if (SINGLE_BYTE_CHAR_P (c)) | |
| 5018 { /* Lookup bitmap. */ | |
| 5019 /* Cast to `unsigned' instead of `unsigned char' in | |
| 5020 case the bit list is a full 32 bytes long. */ | |
| 5021 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
|
5022 && p[1 + c / BYTEWIDTH] & (1 << (c % BYTEWIDTH))) |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5023 not = !not; |
| 939 | 5024 } |
|
1933
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5025 #ifdef emacs |
| 939 | 5026 else if (range_table_exists) |
|
1933
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5027 { |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5028 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
|
5029 |
|
2851
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
5030 if ( (class_bits & BIT_LOWER && ISLOWER (c)) |
|
d2bf7ab893af
(WIDE_CHAR_SUPPORT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2849
diff
changeset
|
5031 | (class_bits & BIT_MULTIBYTE) |
|
1933
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5032 | (class_bits & BIT_PUNCT && ISPUNCT (c)) |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5033 | (class_bits & BIT_SPACE && ISSPACE (c)) |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5034 | (class_bits & BIT_UPPER && ISUPPER (c)) |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5035 | (class_bits & BIT_WORD && ISWORD (c))) |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5036 not = !not; |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5037 else |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5038 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
|
5039 } |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5040 #endif /* emacs */ |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5041 |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5042 if (range_table_exists) |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5043 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
|
5044 else |
|
5ffa81ab1988
[emacs]: Handle character classes for multibyte chars:
Richard Stallman <rms@gnu.org>
parents:
1660
diff
changeset
|
5045 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
|
5046 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5047 if (!not) goto fail; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5048 |
| 939 | 5049 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
|
5050 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
|
5051 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5052 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5053 |
| 941 | 5054 /* 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
|
5055 The argument is the register number. The text |
| 941 | 5056 matched within the group is recorded (in the internal |
| 5057 registers data structure) under the register number. */ | |
| 5058 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
|
5059 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
|
5060 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5061 /* 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
|
5062 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
|
5063 |
| 941 | 5064 regstart[*p] = d; |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
5065 regend[*p] = NULL; /* 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
|
5066 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
|
5067 |
| 941 | 5068 /* 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
|
5069 p += 1; |
| 941 | 5070 break; |
| 5071 | |
| 5072 | |
| 5073 /* 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
|
5074 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
|
5075 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
|
5076 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
|
5077 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5078 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
|
5079 /* 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
|
5080 |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5081 assert (REG_UNSET (regend[*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
|
5082 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
|
5083 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5084 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
|
5085 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
|
5086 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
|
5087 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
|
5088 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
|
5089 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
|
5090 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
|
5091 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
|
5092 |
| 941 | 5093 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
|
5094 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
|
5095 |
| 941 | 5096 /* 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
|
5097 p += 1; |
| 941 | 5098 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
|
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 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5101 /* \<digit> has been turned into a `duplicate' command which is |
| 941 | 5102 followed by the numeric value of <digit> as the register number. */ |
| 5103 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
|
5104 { |
|
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
|
5105 register re_char *d2, *dend2; |
| 941 | 5106 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
|
5107 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
|
5108 |
| 941 | 5109 /* Can't back reference a group which we've never matched. */ |
| 5110 if (REG_UNSET (regstart[regno]) || REG_UNSET (regend[regno])) | |
| 5111 goto fail; | |
| 5112 | |
| 5113 /* Where in input to try to start matching. */ | |
| 5114 d2 = regstart[regno]; | |
| 5115 | |
|
2350
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
5116 /* 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
|
5117 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
|
5118 |
| 941 | 5119 /* Where to stop matching; if both the place to start and |
| 5120 the place to stop matching are in the same string, then | |
| 5121 set to the place to stop, otherwise, for now have to use | |
| 5122 the end of the first string. */ | |
| 5123 | |
| 5124 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
|
5125 == 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
|
5126 ? 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
|
5127 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
|
5128 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5129 /* If necessary, advance to next segment in register |
| 941 | 5130 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
|
5131 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
|
5132 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5133 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
|
5134 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
|
5135 |
| 941 | 5136 /* End of string1 => advance to string2. */ |
| 5137 d2 = string2; | |
| 5138 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
|
5139 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5140 /* 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
|
5141 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
|
5142 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5143 /* 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
|
5144 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
|
5145 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5146 /* 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
|
5147 mcnt = dend - d; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5148 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5149 /* Want how many consecutive characters we can match in |
| 941 | 5150 one shot, so, if necessary, adjust the count. */ |
| 5151 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
|
5152 mcnt = dend2 - d2; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5153 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5154 /* Compare that many; failure if mismatch, else move |
| 941 | 5155 past them. */ |
|
1328
0aa10b723959
Use RE_TRANSLATE_P to check whether translation is
Andreas Schwab <schwab@suse.de>
parents:
1326
diff
changeset
|
5156 if (RE_TRANSLATE_P (translate) |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5157 ? bcmp_translate (d, d2, mcnt, translate, multibyte) |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
5158 : memcmp (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
|
5159 { |
|
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
5160 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
|
5161 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
|
5162 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5163 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
|
5164 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5165 } |
|
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 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
|
5167 |
|
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 |
| 941 | 5169 /* begline matches the empty string at the beginning of the string |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5170 (unless `not_bol' is set in `bufp'), and 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
|
5171 case begline: |
| 941 | 5172 DEBUG_PRINT1 ("EXECUTING begline.\n"); |
| 5173 | |
| 5174 if (AT_STRINGS_BEG (d)) | |
| 5175 { | |
| 5176 if (!bufp->not_bol) break; | |
| 5177 } | |
|
2438
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
5178 else |
| 941 | 5179 { |
|
2438
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
5180 unsigned char c; |
|
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
5181 GET_CHAR_BEFORE_2 (c, d, string1, end1, string2, end2); |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5182 if (c == '\n') |
|
2438
c6d2b36bed68
(re_match_2_internal): Don't shorten the strings anymore,
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2375
diff
changeset
|
5183 break; |
| 941 | 5184 } |
| 5185 /* In all other cases, we fail. */ | |
| 5186 goto fail; | |
| 5187 | |
| 5188 | |
| 5189 /* 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
|
5190 case endline: |
| 941 | 5191 DEBUG_PRINT1 ("EXECUTING endline.\n"); |
| 5192 | |
| 5193 if (AT_STRINGS_END (d)) | |
| 5194 { | |
| 5195 if (!bufp->not_eol) break; | |
| 5196 } | |
|
2551
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
5197 else |
| 941 | 5198 { |
|
2551
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
5199 PREFETCH_NOLIMIT (); |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5200 if (*d == '\n') |
|
2551
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
5201 break; |
| 941 | 5202 } |
| 5203 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
|
5204 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5205 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5206 /* Match at the very beginning of the data. */ |
| 941 | 5207 case begbuf: |
| 5208 DEBUG_PRINT1 ("EXECUTING begbuf.\n"); | |
| 5209 if (AT_STRINGS_BEG (d)) | |
| 5210 break; | |
| 5211 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
|
5212 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5213 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5214 /* Match at the very end of the data. */ |
| 941 | 5215 case endbuf: |
| 5216 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
|
5217 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
|
5218 break; |
| 941 | 5219 goto fail; |
| 5220 | |
| 5221 | |
| 5222 /* on_failure_keep_string_jump is used to optimize `.*\n'. It | |
| 5223 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
|
5224 `POP_FAILURE_POINT' will keep the current value for the |
| 941 | 5225 string, instead of restoring it. To see why, consider |
| 5226 matching `foo\nbar' against `.*\n'. The .* matches the foo; | |
| 5227 then the . fails against the \n. But the next thing we want | |
| 5228 to do is match the \n against the \n; if we restored the | |
| 5229 string value, we would be back at the foo. | |
| 5230 | |
| 5231 Because this is used only in specific cases, we don't need to | |
| 5232 check all the things that `on_failure_jump' does, to make | |
| 5233 sure the right things get saved on the stack. Hence we don't | |
| 5234 share its code. The only reason to push anything on the | |
| 5235 stack at all is that otherwise we would have to change | |
| 5236 `anychar's code to do something besides goto fail in this | |
| 5237 case; that seems worse than this. */ | |
| 5238 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
|
5239 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
|
5240 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
|
5241 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
|
5242 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5243 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
|
5244 break; |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5245 |
|
2370
d8ded9c0e20c
(enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2359
diff
changeset
|
5246 /* 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
|
5247 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
|
5248 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
|
5249 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
|
5250 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
|
5251 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
|
5252 loop. |
|
d8ded9c0e20c
(enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2359
diff
changeset
|
5253 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
|
5254 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
|
5255 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
|
5256 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
|
5257 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
|
5258 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
|
5259 the loop. */ |
|
d8ded9c0e20c
(enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2359
diff
changeset
|
5260 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
|
5261 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
|
5262 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
|
5263 mcnt, p + mcnt); |
|
d8ded9c0e20c
(enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2359
diff
changeset
|
5264 |
|
d8ded9c0e20c
(enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2359
diff
changeset
|
5265 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
|
5266 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
|
5267 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
|
5268 break; |
|
d8ded9c0e20c
(enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2359
diff
changeset
|
5269 |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
5270 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
5271 /* 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
|
5272 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
|
5273 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
|
5274 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
|
5275 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
|
5276 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
|
5277 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
|
5278 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5279 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
|
5280 PUSH_FAILURE_POINT (p - 3, d); |
| 941 | 5281 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
|
5282 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5283 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5284 /* Uses of on_failure_jump: |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5285 |
| 941 | 5286 Each alternative starts with an on_failure_jump that points |
| 5287 to the beginning of the next alternative. Each alternative | |
| 5288 except the last ends with a jump that in effect jumps past | |
| 5289 the rest of the alternatives. (They really jump to the | |
| 5290 ending jump of the following alternative, because tensioning | |
| 5291 these jumps is a hassle.) | |
| 5292 | |
| 5293 Repeats start with an on_failure_jump that points past both | |
| 5294 the repetition text and either the following jump or | |
| 5295 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
|
5296 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
|
5297 QUIT; |
| 941 | 5298 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
|
5299 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
|
5300 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
|
5301 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5302 PUSH_FAILURE_POINT (p -3, d); |
| 941 | 5303 break; |
| 5304 | |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
5305 /* 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
|
5306 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
|
5307 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
|
5308 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
|
5309 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
|
5310 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
|
5311 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
|
5312 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
|
5313 QUIT; |
| 941 | 5314 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
|
5315 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
|
5316 mcnt, p + mcnt); |
| 941 | 5317 { |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5318 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
|
5319 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
|
5320 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5321 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
|
5322 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
|
5323 |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
5324 EXTRACT_NUMBER (mcnt, p2 - 2); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
5325 |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
5326 /* 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
|
5327 we are expecting. */ |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
5328 assert (skip_one_char (p1) == p2 - 3); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
5329 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
|
5330 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
|
5331 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
|
5332 { |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5333 /* 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
|
5334 DEBUG_PRINT1 (" smart exclusive => fast loop.\n"); |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
5335 *p = (unsigned char) on_failure_keep_string_jump; |
|
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
5336 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
|
5337 } |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5338 else |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5339 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5340 /* 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
|
5341 DEBUG_PRINT1 (" smart default => slow loop.\n"); |
|
2355
0786b40fdf1c
(RE_STRING_CHAR): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2350
diff
changeset
|
5342 *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
|
5343 } |
|
2350
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
5344 DEBUG_STATEMENT (debug -= 2); |
| 939 | 5345 } |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5346 break; |
| 941 | 5347 |
| 5348 /* Unconditionally jump (without popping any failure points). */ | |
| 5349 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
|
5350 unconditional_jump: |
|
1660
ef1f39a7e7c3
(re_match_2_internal) [WINDOWSNT & emacs]: Insert QUIT at various places.
Richard Stallman <rms@gnu.org>
parents:
1583
diff
changeset
|
5351 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
|
5352 EXTRACT_NUMBER_AND_INCR (mcnt, p); /* Get the amount to jump. */ |
| 941 | 5353 DEBUG_PRINT2 ("EXECUTING jump %d ", mcnt); |
| 5354 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
|
5355 DEBUG_PRINT2 ("(to %p).\n", p); |
| 941 | 5356 break; |
| 5357 | |
| 5358 | |
| 5359 /* Have to succeed matching what follows at least n times. | |
| 5360 After that, handle like `on_failure_jump'. */ | |
| 5361 case succeed_n: | |
| 5362 EXTRACT_NUMBER (mcnt, p + 2); | |
| 5363 DEBUG_PRINT2 ("EXECUTING succeed_n %d.\n", mcnt); | |
| 5364 | |
|
2828
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
5365 /* Originally, mcnt is how many times we HAVE to succeed. */ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
5366 if (mcnt != 0) |
| 941 | 5367 { |
|
2828
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
5368 mcnt--; |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
5369 p += 2; |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
5370 PUSH_FAILURE_COUNT (p); |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
5371 DEBUG_PRINT3 (" Setting %p to %d.\n", p, mcnt); |
|
2828
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
5372 STORE_NUMBER_AND_INCR (p, mcnt); |
| 941 | 5373 } |
|
2828
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
5374 else |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
5375 /* The two bytes encoding mcnt == 0 are two no_op opcodes. */ |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
5376 goto on_failure; |
| 941 | 5377 break; |
| 5378 | |
| 5379 case jump_n: | |
| 5380 EXTRACT_NUMBER (mcnt, p + 2); | |
| 5381 DEBUG_PRINT2 ("EXECUTING jump_n %d.\n", mcnt); | |
| 5382 | |
| 5383 /* Originally, this is how many times we CAN jump. */ | |
|
2828
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
5384 if (mcnt != 0) |
| 941 | 5385 { |
|
2828
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
5386 mcnt--; |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
5387 PUSH_FAILURE_COUNT (p + 2); |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
5388 STORE_NUMBER (p + 2, mcnt); |
|
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
5389 goto unconditional_jump; |
| 941 | 5390 } |
| 5391 /* 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
|
5392 else |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5393 p += 4; |
| 941 | 5394 break; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5395 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5396 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
|
5397 { |
| 941 | 5398 DEBUG_PRINT1 ("EXECUTING set_number_at.\n"); |
| 5399 | |
| 5400 EXTRACT_NUMBER_AND_INCR (mcnt, p); | |
| 5401 p1 = p + mcnt; | |
| 5402 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
|
5403 DEBUG_PRINT3 (" Setting %p to %d.\n", p1, mcnt); |
|
2828
a52061981f50
(PUSH_FAILURE_COUNT): New macro.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2816
diff
changeset
|
5404 PUSH_FAILURE_COUNT (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
|
5405 STORE_NUMBER (p1, mcnt); |
| 941 | 5406 break; |
| 5407 } | |
|
521
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5408 |
|
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5409 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
|
5410 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
|
5411 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
|
5412 DEBUG_PRINT2 ("EXECUTING %swordbound.\n", not?"not":""); |
| 939 | 5413 |
|
2350
f3edfed6aa96
(re_match_2): Fix string shortening (to fit `stop') to make sure
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2349
diff
changeset
|
5414 /* We SUCCEED (or FAIL) in one of the following cases: */ |
| 939 | 5415 |
| 5416 /* 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
|
5417 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
|
5418 not = !not; |
| 939 | 5419 else |
| 5420 { | |
| 5421 /* C1 is the character before D, S1 is the syntax of C1, C2 | |
| 5422 is the character at D, and S2 is the syntax of C2. */ | |
| 5423 int c1, c2, s1, s2; | |
| 5424 #ifdef emacs | |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5425 int offset = PTR_TO_OFFSET (d - 1); |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5426 int charpos = SYNTAX_TABLE_BYTE_TO_CHAR (offset); |
|
1204
28ff40a118b8
(re_search_2): Fix call to CHAR_HEAD_P.
Richard Stallman <rms@gnu.org>
parents:
1158
diff
changeset
|
5427 UPDATE_SYNTAX_TABLE (charpos); |
| 941 | 5428 #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
|
5429 GET_CHAR_BEFORE_2 (c1, d, string1, end1, string2, end2); |
| 939 | 5430 s1 = SYNTAX (c1); |
| 5431 #ifdef emacs | |
|
1204
28ff40a118b8
(re_search_2): Fix call to CHAR_HEAD_P.
Richard Stallman <rms@gnu.org>
parents:
1158
diff
changeset
|
5432 UPDATE_SYNTAX_TABLE_FORWARD (charpos + 1); |
| 941 | 5433 #endif |
|
2551
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
5434 PREFETCH_NOLIMIT (); |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5435 c2 = RE_STRING_CHAR (d, dend - d); |
| 939 | 5436 s2 = SYNTAX (c2); |
| 5437 | |
| 5438 if (/* Case 2: Only one of S1 and S2 is Sword. */ | |
| 5439 ((s1 == Sword) != (s2 == Sword)) | |
| 5440 /* Case 3: Both of S1 and S2 are Sword, and macro | |
| 941 | 5441 WORD_BOUNDARY_P (C1, C2) returns nonzero. */ |
| 939 | 5442 || ((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
|
5443 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
|
5444 } |
|
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
|
5445 if (not) |
|
521
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5446 break; |
| 939 | 5447 else |
|
521
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5448 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
|
5449 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5450 case wordbeg: |
| 941 | 5451 DEBUG_PRINT1 ("EXECUTING wordbeg.\n"); |
| 939 | 5452 |
| 5453 /* We FAIL in one of the following cases: */ | |
| 5454 | |
| 941 | 5455 /* Case 1: D is at the end of string. */ |
| 939 | 5456 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
|
5457 goto fail; |
| 939 | 5458 else |
| 5459 { | |
| 5460 /* C1 is the character before D, S1 is the syntax of C1, C2 | |
| 5461 is the character at D, and S2 is the syntax of C2. */ | |
| 5462 int c1, c2, s1, s2; | |
| 5463 #ifdef emacs | |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5464 int offset = PTR_TO_OFFSET (d); |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5465 int charpos = SYNTAX_TABLE_BYTE_TO_CHAR (offset); |
|
1218
51cf07183c67
(re_match_2_internal): Use SYNTAX_TABLE_BYTE_TO_CHAR.
Richard Stallman <rms@gnu.org>
parents:
1204
diff
changeset
|
5466 UPDATE_SYNTAX_TABLE (charpos); |
| 941 | 5467 #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
|
5468 PREFETCH (); |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5469 c2 = RE_STRING_CHAR (d, dend - d); |
| 939 | 5470 s2 = SYNTAX (c2); |
| 941 | 5471 |
| 939 | 5472 /* Case 2: S2 is not Sword. */ |
| 5473 if (s2 != Sword) | |
| 5474 goto fail; | |
| 5475 | |
| 5476 /* Case 3: D is not at the beginning of string ... */ | |
| 5477 if (!AT_STRINGS_BEG (d)) | |
| 5478 { | |
| 5479 GET_CHAR_BEFORE_2 (c1, d, string1, end1, string2, end2); | |
| 5480 #ifdef emacs | |
|
1204
28ff40a118b8
(re_search_2): Fix call to CHAR_HEAD_P.
Richard Stallman <rms@gnu.org>
parents:
1158
diff
changeset
|
5481 UPDATE_SYNTAX_TABLE_BACKWARD (charpos - 1); |
| 941 | 5482 #endif |
| 939 | 5483 s1 = SYNTAX (c1); |
| 5484 | |
| 5485 /* ... and S1 is Sword, and WORD_BOUNDARY_P (C1, C2) | |
| 941 | 5486 returns 0. */ |
| 939 | 5487 if ((s1 == Sword) && !WORD_BOUNDARY_P (c1, c2)) |
| 5488 goto fail; | |
| 5489 } | |
| 5490 } | |
| 5491 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
|
5492 |
|
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 case wordend: |
| 941 | 5494 DEBUG_PRINT1 ("EXECUTING wordend.\n"); |
| 939 | 5495 |
| 5496 /* We FAIL in one of the following cases: */ | |
| 5497 | |
| 5498 /* Case 1: D is at the beginning of string. */ | |
| 5499 if (AT_STRINGS_BEG (d)) | |
| 5500 goto fail; | |
| 5501 else | |
| 5502 { | |
| 5503 /* C1 is the character before D, S1 is the syntax of C1, C2 | |
| 5504 is the character at D, and S2 is the syntax of C2. */ | |
| 5505 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
|
5506 #ifdef emacs |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5507 int offset = PTR_TO_OFFSET (d) - 1; |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5508 int charpos = SYNTAX_TABLE_BYTE_TO_CHAR (offset); |
|
1218
51cf07183c67
(re_match_2_internal): Use SYNTAX_TABLE_BYTE_TO_CHAR.
Richard Stallman <rms@gnu.org>
parents:
1204
diff
changeset
|
5509 UPDATE_SYNTAX_TABLE (charpos); |
|
1204
28ff40a118b8
(re_search_2): Fix call to CHAR_HEAD_P.
Richard Stallman <rms@gnu.org>
parents:
1158
diff
changeset
|
5510 #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
|
5511 GET_CHAR_BEFORE_2 (c1, d, string1, end1, string2, end2); |
| 939 | 5512 s1 = SYNTAX (c1); |
| 5513 | |
| 5514 /* Case 2: S1 is not Sword. */ | |
| 5515 if (s1 != Sword) | |
| 5516 goto fail; | |
| 5517 | |
| 5518 /* Case 3: D is not at the end of string ... */ | |
| 5519 if (!AT_STRINGS_END (d)) | |
| 5520 { | |
|
2551
b341325934ed
(PREFETCH_NOLIMIT): New function.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2537
diff
changeset
|
5521 PREFETCH_NOLIMIT (); |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5522 c2 = RE_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
|
5523 #ifdef emacs |
|
28ff40a118b8
(re_search_2): Fix call to CHAR_HEAD_P.
Richard Stallman <rms@gnu.org>
parents:
1158
diff
changeset
|
5524 UPDATE_SYNTAX_TABLE_FORWARD (charpos); |
|
28ff40a118b8
(re_search_2): Fix call to CHAR_HEAD_P.
Richard Stallman <rms@gnu.org>
parents:
1158
diff
changeset
|
5525 #endif |
| 939 | 5526 s2 = SYNTAX (c2); |
| 5527 | |
| 5528 /* ... and S2 is Sword, and WORD_BOUNDARY_P (C1, C2) | |
| 941 | 5529 returns 0. */ |
| 939 | 5530 if ((s2 == Sword) && !WORD_BOUNDARY_P (c1, c2)) |
| 941 | 5531 goto fail; |
| 939 | 5532 } |
| 5533 } | |
| 5534 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
|
5535 |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5536 case syntaxspec: |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5537 case notsyntaxspec: |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5538 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
|
5539 mcnt = *p++; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5540 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
|
5541 PREFETCH (); |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5542 #ifdef emacs |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5543 { |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5544 int offset = PTR_TO_OFFSET (d); |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5545 int pos1 = SYNTAX_TABLE_BYTE_TO_CHAR (offset); |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5546 UPDATE_SYNTAX_TABLE (pos1); |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5547 } |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5548 #endif |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5549 { |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5550 int c, len; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5551 |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5552 c = RE_STRING_CHAR_AND_LENGTH (d, dend - d, len); |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5553 |
|
2359
dbf725277cfc
(enum syntaxcode): Provide default for non-Emacs.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2357
diff
changeset
|
5554 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
|
5555 goto fail; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5556 d += len; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5557 } |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5558 break; |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
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 #ifdef emacs |
| 941 | 5561 case before_dot: |
| 5562 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
|
5563 if (PTR_BYTE_POS (d) >= PT_BYTE) |
| 941 | 5564 goto fail; |
| 5565 break; | |
| 5566 | |
| 5567 case at_dot: | |
| 5568 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
|
5569 if (PTR_BYTE_POS (d) != PT_BYTE) |
| 941 | 5570 goto fail; |
| 5571 break; | |
| 5572 | |
| 5573 case after_dot: | |
| 5574 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
|
5575 if (PTR_BYTE_POS (d) <= PT_BYTE) |
| 941 | 5576 goto fail; |
| 5577 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
|
5578 |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5579 case categoryspec: |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5580 case notcategoryspec: |
|
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5581 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
|
5582 mcnt = *p++; |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5583 DEBUG_PRINT3 ("EXECUTING %scategoryspec %d.\n", not?"not":"", mcnt); |
| 939 | 5584 PREFETCH (); |
| 5585 { | |
| 5586 int c, len; | |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5587 c = RE_STRING_CHAR_AND_LENGTH (d, dend - d, len); |
| 939 | 5588 |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5589 if ((!CHAR_HAS_CATEGORY (c, mcnt)) ^ not) |
| 939 | 5590 goto fail; |
| 5591 d += len; | |
| 5592 } | |
| 5593 break; | |
| 5594 | |
|
2356
d93889e88226
(CHAR_CHARSET, CHARSET_LEADING_CODE_BASE): Add default
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2355
diff
changeset
|
5595 #endif /* emacs */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5596 |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5597 default: |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5598 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
|
5599 } |
| 939 | 5600 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
|
5601 |
|
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 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5603 /* 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
|
5604 fail: |
|
1660
ef1f39a7e7c3
(re_match_2_internal) [WINDOWSNT & emacs]: Insert QUIT at various places.
Richard Stallman <rms@gnu.org>
parents:
1583
diff
changeset
|
5605 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
|
5606 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
|
5607 { |
|
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
|
5608 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
|
5609 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
|
5610 /* A restart point is known. Restore to that state. */ |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5611 DEBUG_PRINT1 ("\nFAIL:\n"); |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5612 POP_FAILURE_POINT (str, pat); |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5613 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
|
5614 { |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5615 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
|
5616 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
|
5617 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
|
5618 |
|
2370
d8ded9c0e20c
(enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2359
diff
changeset
|
5619 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
|
5620 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
|
5621 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
|
5622 /* Fallthrough */ |
|
d8ded9c0e20c
(enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2359
diff
changeset
|
5623 |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5624 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
|
5625 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
|
5626 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
|
5627 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
|
5628 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
|
5629 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
|
5630 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
|
5631 break; |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5632 |
|
2370
d8ded9c0e20c
(enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2359
diff
changeset
|
5633 case no_op: |
|
d8ded9c0e20c
(enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2359
diff
changeset
|
5634 /* 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
|
5635 goto fail; |
|
d8ded9c0e20c
(enum re_opcode_t): New opcode on_failure_jump_nastyloop.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2359
diff
changeset
|
5636 |
|
2345
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5637 default: |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5638 abort(); |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5639 } |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5640 |
|
93d6633849d6
This is a big redesign of failure-stack and register handling, prompted
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2153
diff
changeset
|
5641 assert (p >= bufp->buffer && p <= pend); |
| 939 | 5642 |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5643 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
|
5644 dend = end_match_1; |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5645 } |
|
441
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 else |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5647 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
|
5648 } /* 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
|
5649 |
|
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 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
|
5651 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
|
5652 |
|
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 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
|
5654 |
| 939 | 5655 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
|
5656 } /* 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
|
5657 |
|
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 /* 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
|
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 /* 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
|
5661 bytes; nonzero otherwise. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5662 |
|
441
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 static int |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5664 bcmp_translate (s1, s2, len, translate, multibyte) |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5665 re_char *s1, *s2; |
|
441
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 register int len; |
|
501
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
5667 RE_TRANSLATE_TYPE translate; |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5668 const int 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
|
5669 { |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5670 register re_char *p1 = s1, *p2 = s2; |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5671 re_char *p1_end = s1 + len; |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5672 re_char *p2_end = s2 + len; |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
5673 |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
5674 /* FIXME: Checking both p1 and p2 presumes that the two strings might have |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
5675 different lengths, but relying on a single `len' would break this. -sm */ |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
5676 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
|
5677 { |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
5678 int p1_charlen, p2_charlen; |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
5679 int p1_ch, p2_ch; |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
5680 |
|
2375
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5681 p1_ch = RE_STRING_CHAR_AND_LENGTH (p1, p1_end - p1, p1_charlen); |
|
f25b865f900c
* regex.c (PTR_TO_OFFSET) [!emacs]: Remove.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2372
diff
changeset
|
5682 p2_ch = RE_STRING_CHAR_AND_LENGTH (p2, p2_end - p2, p2_charlen); |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
5683 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
5684 if (RE_TRANSLATE (translate, p1_ch) |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
5685 != 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
|
5686 return 1; |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
5687 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
5688 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
|
5689 } |
|
1296
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
5690 |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
5691 if (p1 != p1_end || p2 != p2_end) |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
5692 return 1; |
|
7b938cc81ae2
(compile_range): Unused function deleted.
Richard Stallman <rms@gnu.org>
parents:
1218
diff
changeset
|
5693 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5694 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
|
5695 } |
|
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 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5697 /* 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
|
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 /* 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
|
5700 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
|
5701 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
|
5702 |
|
441
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 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
|
5704 are set in BUFP on entry. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5705 |
| 939 | 5706 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
|
5707 |
|
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 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
|
5709 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
|
5710 const char *pattern; |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5711 size_t 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
|
5712 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
|
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 reg_errcode_t ret; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5715 |
|
441
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 /* 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
|
5717 (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
|
5718 bufp->regs_allocated = REGS_UNALLOCATED; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5719 |
|
441
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 /* 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
|
5721 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
|
5722 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
|
5723 bufp->no_sub = 0; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5724 |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
5725 ret = regex_compile ((re_char*) pattern, length, re_syntax_options, 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
|
5726 |
|
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 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
|
5728 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
|
5729 return gettext (re_error_msgid[(int) ret]); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5730 } |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5731 WEAK_ALIAS (__re_compile_pattern, re_compile_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
|
5732 |
| 939 | 5733 /* Entry points compatible with 4.2 BSD regex library. We don't define |
| 5734 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
|
5735 |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5736 #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
|
5737 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5738 /* 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
|
5739 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
|
5740 |
|
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 char * |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5742 # ifdef _LIBC |
|
636
ddd029a89661
[_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents:
631
diff
changeset
|
5743 /* 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
|
5744 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
|
5745 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
|
5746 weak_function |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5747 # 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
|
5748 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
|
5749 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
|
5750 { |
|
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 reg_errcode_t ret; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5752 |
|
441
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 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
|
5754 { |
|
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 if (!re_comp_buf.buffer) |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5756 /* Yes, we're discarding `const' here if !HAVE_LIBINTL. */ |
|
2615
31b85fc23c04
(re_match, re_match_2): Protect calls to alloca (0).
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2581
diff
changeset
|
5757 return (char *) gettext ("No previous regular expression"); |
|
441
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 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
|
5759 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5760 |
|
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 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
|
5762 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5763 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
|
5764 if (re_comp_buf.buffer == NULL) |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5765 /* Yes, we're discarding `const' here if !HAVE_LIBINTL. */ |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5766 return (char *) 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
|
5767 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
|
5768 |
|
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 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
|
5770 if (re_comp_buf.fastmap == NULL) |
|
2615
31b85fc23c04
(re_match, re_match_2): Protect calls to alloca (0).
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2581
diff
changeset
|
5771 /* Yes, we're discarding `const' here if !HAVE_LIBINTL. */ |
|
31b85fc23c04
(re_match, re_match_2): Protect calls to alloca (0).
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2581
diff
changeset
|
5772 return (char *) 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
|
5773 } |
|
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 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5775 /* 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
|
5776 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
|
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 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
|
5779 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5780 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
|
5781 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
|
5782 |
|
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 /* 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
|
5784 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
|
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 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5787 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5788 int |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5789 # ifdef _LIBC |
|
636
ddd029a89661
[_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents:
631
diff
changeset
|
5790 weak_function |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5791 # 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
|
5792 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
|
5793 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
|
5794 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5795 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
|
5796 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
|
5797 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
|
5798 } |
|
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 #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
|
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 /* 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
|
5802 |
|
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 #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
|
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 /* 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
|
5806 |
| 939 | 5807 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
|
5808 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
|
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 `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
|
5811 `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
|
5812 `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
|
5813 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
|
5814 RE_SYNTAX_POSIX_BASIC; |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5815 `fastmap' to an allocated space for the fastmap; |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5816 `fastmap_accurate' to zero; |
|
441
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 `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
|
5818 |
|
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 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
|
5820 |
|
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 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
|
5822 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5823 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
|
5824 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
|
5825 |
|
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 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
|
5827 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
|
5828 |
|
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 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
|
5830 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
|
5831 |
|
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 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
|
5833 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
|
5834 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
|
5835 |
| 939 | 5836 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
|
5837 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
|
5838 |
|
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 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
|
5840 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
|
5841 regex_t *preg; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5842 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
|
5843 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
|
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 reg_errcode_t ret; |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
5846 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
|
5847 = (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
|
5848 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
|
5849 |
|
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 /* 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
|
5851 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
|
5852 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
|
5853 preg->used = 0; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5854 |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5855 /* Try to allocate space for the fastmap. */ |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5856 preg->fastmap = (char *) malloc (1 << BYTEWIDTH); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5857 |
|
441
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 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
|
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 unsigned i; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5861 |
|
501
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
5862 preg->translate |
|
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
5863 = (RE_TRANSLATE_TYPE) malloc (CHAR_SET_SIZE |
|
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
5864 * 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
|
5865 if (preg->translate == NULL) |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5866 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
|
5867 |
|
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 /* 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
|
5869 for (i = 0; i < CHAR_SET_SIZE; i++) |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
5870 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
|
5871 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5872 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
|
5873 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
|
5874 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5875 /* 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
|
5876 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
|
5877 { /* 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
|
5878 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
|
5879 syntax |= RE_HAT_LISTS_NOT_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
|
5880 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5881 else |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5882 syntax |= RE_NO_NEWLINE_ANCHOR; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5883 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5884 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
|
5885 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5886 /* 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
|
5887 can use strlen here in compiling the pattern. */ |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
5888 ret = regex_compile ((re_char*) pattern, strlen (pattern), syntax, preg); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5889 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5890 /* 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
|
5891 unmatched close-group: both are REG_EPAREN. */ |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5892 if (ret == REG_ERPAREN) |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5893 ret = REG_EPAREN; |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5894 |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5895 if (ret == REG_NOERROR && preg->fastmap) |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5896 { /* Compute the fastmap now, since regexec cannot modify the pattern |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5897 buffer. */ |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5898 re_compile_fastmap (preg); |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5899 if (preg->can_be_null) |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5900 { /* The fastmap can't be used anyway. */ |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5901 free (preg->fastmap); |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5902 preg->fastmap = NULL; |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5903 } |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5904 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5905 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
|
5906 } |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5907 WEAK_ALIAS (__regcomp, regcomp) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5908 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5909 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5910 /* 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
|
5911 string STRING. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5912 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5913 If NMATCH is zero or REG_NOSUB was set in the cflags argument to |
| 939 | 5914 `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
|
5915 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
|
5916 corresponding matched substrings. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5917 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5918 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
|
5919 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
|
5920 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
|
5921 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5922 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
|
5923 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5924 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
|
5925 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
|
5926 const regex_t *preg; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5927 const char *string; |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5928 size_t nmatch; |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5929 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
|
5930 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
|
5931 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5932 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
|
5933 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
|
5934 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
|
5935 int len = strlen (string); |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5936 boolean want_reg_info = !preg->no_sub && nmatch > 0 && 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
|
5937 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5938 private_preg = *preg; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5939 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5940 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
|
5941 private_preg.not_eol = !!(eflags & REG_NOTEOL); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5942 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5943 /* 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
|
5944 information about, via `nmatch'. We have to pass that on to the |
| 939 | 5945 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
|
5946 private_preg.regs_allocated = REGS_FIXED; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5947 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5948 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
|
5949 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5950 regs.num_regs = nmatch; |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
5951 regs.start = TALLOC (nmatch * 2, regoff_t); |
|
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
5952 if (regs.start == NULL) |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5953 return (int) REG_NOMATCH; |
|
2848
99ba697d0902
Merge some changes from GNU libc. Add prototypes.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2841
diff
changeset
|
5954 regs.end = regs.start + nmatch; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5955 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5956 |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5957 /* Instead of using not_eol to implement REG_NOTEOL, we could simply |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5958 pass (&private_preg, string, len + 1, 0, len, ...) pretending the string |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5959 was a little bit longer but still only matching the real part. |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5960 This works because the `endline' will check for a '\n' and will find a |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5961 '\0', correctly deciding that this is not the end of a line. |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5962 But it doesn't work out so nicely for REG_NOTBOL, since we don't have |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5963 a convenient '\0' there. For all we know, the string could be preceded |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5964 by '\n' which would throw things off. */ |
|
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5965 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5966 /* 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
|
5967 ret = re_search (&private_preg, string, len, |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5968 /* start: */ 0, /* range: */ len, |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5969 want_reg_info ? ®s : (struct re_registers *) 0); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5970 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5971 /* 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
|
5972 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
|
5973 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5974 if (ret >= 0) |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5975 { |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5976 unsigned r; |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5977 |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5978 for (r = 0; r < nmatch; r++) |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5979 { |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5980 pmatch[r].rm_so = regs.start[r]; |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5981 pmatch[r].rm_eo = regs.end[r]; |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5982 } |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
5983 } |
| 939 | 5984 |
| 5985 /* 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
|
5986 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
|
5987 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5988 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5989 /* 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
|
5990 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
|
5991 } |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
5992 WEAK_ALIAS (__regexec, regexec) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5993 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5994 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5995 /* 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
|
5996 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
|
5997 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5998 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
|
5999 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
|
6000 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
|
6001 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
|
6002 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
|
6003 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
|
6004 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6005 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
|
6006 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
|
6007 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6008 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
|
6009 || 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
|
6010 /* Only error codes returned by the rest of the code should be passed |
| 939 | 6011 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
|
6012 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
|
6013 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
|
6014 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
|
6015 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6016 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
|
6017 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6018 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
|
6019 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6020 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
|
6021 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6022 if (msg_size > errbuf_size) |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
6023 { |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
6024 strncpy (errbuf, msg, errbuf_size - 1); |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
6025 errbuf[errbuf_size - 1] = 0; |
|
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
6026 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6027 else |
|
2841
a19cab2eaa6d
* regex.c: Indent cpp directives and remove parens after `defined'.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2828
diff
changeset
|
6028 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
|
6029 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6030 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6031 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
|
6032 } |
|
2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
|
6033 WEAK_ALIAS (__regerror, regerror) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6034 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6035 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6036 /* 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
|
6037 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6038 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
|
6039 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
|
6040 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
|
6041 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6042 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
|
6043 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
|
6044 preg->buffer = NULL; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6045 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6046 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
|
6047 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
|
6048 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6049 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
|
6050 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
|
6051 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
|
6052 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
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6053 |
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403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6054 if (preg->translate != NULL) |
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403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6055 free (preg->translate); |
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403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6056 preg->translate = NULL; |
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403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6057 } |
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2849
a7cffadea321
* regex.h (RE_NO_NEWLINE_ANCHOR): New syntax flag.
Stefan Monnier <monnier@iro.umontreal.ca>
parents:
2848
diff
changeset
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6058 WEAK_ALIAS (__regfree, regfree) |
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441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6059 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6060 #endif /* not emacs */ |