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annotate libinterp/corefcn/txt-eng.h @ 20917:6f0bd96f93c0

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maint: Use new C++ archetype in more files. Place input validation first in files. Move declaration of retval down in function to be closer to point of usage. Eliminate else clause after if () error. Use "return ovl()" where it makes sense. * __dispatch__.cc, __dsearchn__.cc, __ichol__.cc, __lin_interpn__.cc, balance.cc, betainc.cc, bitfcns.cc, bsxfun.cc, cellfun.cc, colloc.cc, conv2.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc, debug.cc, dirfns.cc, dlmread.cc, dot.cc, eig.cc, error.cc, fft.cc, fft2.cc, fftn.cc, file-io.cc, ov-type-conv.h: Use new C++ archetype in more files.
author Rik <rik@octave.org>
date Wed, 16 Dec 2015 15:00:31 -0800
parents 4197fc428c7d
children
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1 /*
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2
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3 Copyright (C) 2009-2015 Michael Goffioul
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if ! defined (txt_eng_h)
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24 #define txt_eng_h 1
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25
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26 #include <memory>
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27 #include <string>
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28
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29 #include "base-list.h"
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30 #include "caseless-str.h"
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31 #include "dMatrix.h"
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32
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33 class text_element;
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34 class text_element_string;
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35 class text_element_symbol;
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36 class text_element_list;
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37 class text_element_subscript;
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38 class text_element_superscript;
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39 class text_element_combined;
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40 class text_element_fontname;
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41 class text_element_fontsize;
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42 class text_element_fontstyle;
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43 class text_element_color;
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44
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45 class text_processor;
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46
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47 class
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48 OCTINTERP_API
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49 text_element
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50 {
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51 public:
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52 text_element (void) { }
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53
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54 virtual ~text_element (void) { }
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55
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56 virtual void accept (text_processor& p) = 0;
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57
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58 private:
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59 text_element (const text_element&);
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60 };
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61
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62 class
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63 OCTINTERP_API
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64 text_element_string : public text_element
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65 {
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66 public:
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67 text_element_string (const std::string& s = "")
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68 : text_element (), str (s) { }
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69
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70 ~text_element_string (void) { }
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71
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72 std::string string_value (void) const { return str; }
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73
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74 void accept (text_processor& p);
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75
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76 private:
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77 std::string str;
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78
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79 private:
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80 text_element_string (const text_element_string &);
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81 };
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82
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83 class
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84 OCTINTERP_API
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85 text_element_symbol : public text_element
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86 {
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87 public:
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88 enum { invalid_code = 0xFFFFFFFFU };
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89
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90 public:
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91 text_element_symbol (int sym)
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92 : text_element (), symbol (sym) { }
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93
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94 ~text_element_symbol (void) { }
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95
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96 int get_symbol (void) const { return symbol; }
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97
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98 uint32_t get_symbol_code (void) const;
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99
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100 void accept (text_processor& p);
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101
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102 private:
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103 int symbol;
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104 };
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105
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106 class
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107 OCTINTERP_API
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108 text_element_list
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109 : public text_element, public octave_base_list<text_element *>
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110 {
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111 public:
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112 text_element_list (void)
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113 : text_element (), octave_base_list<text_element*> () { }
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114
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115 text_element_list (text_element* e)
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116 : text_element (), octave_base_list<text_element*> ()
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117 { push_back (e); }
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118
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119 ~text_element_list (void)
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120 {
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121 while (! empty ())
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122 {
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123 iterator it = begin ();
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124 delete (*it);
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125 erase (it);
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126 }
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127 }
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128
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129 void accept (text_processor& p);
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130 };
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131
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132 class
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133 OCTINTERP_API
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134 text_element_subscript : public text_element
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135 {
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136 public:
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137 text_element_subscript (text_element* e)
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138 : text_element (), elem (e) { }
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139
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140 text_element_subscript (char c)
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141 : text_element ()
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142 { elem = new text_element_string (std::string (1, c)); }
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143
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144 ~text_element_subscript (void)
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145 { delete elem; }
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146
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147 void accept (text_processor& p);
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148
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149 text_element* get_element (void) { return elem; }
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150
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151 private:
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152 text_element* elem;
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153
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154 private:
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155 text_element_subscript (void);
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156 };
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157
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158 class
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159 OCTINTERP_API
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160 text_element_superscript : public text_element
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161 {
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162 public:
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163 text_element_superscript (text_element* e)
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164 : text_element (), elem (e) { }
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165
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166 text_element_superscript (char c)
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167 : text_element ()
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168 { elem = new text_element_string (std::string (1, c)); }
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169
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170 ~text_element_superscript (void)
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171 { delete elem; }
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172
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173 void accept (text_processor& p);
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174
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175 text_element* get_element (void) { return elem; }
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176
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177 private:
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178 text_element* elem;
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179
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180 private:
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181 text_element_superscript (void);
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182 };
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183
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184 class
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185 OCTINTERP_API
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186 text_element_combined : public text_element_list
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187 {
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188 public:
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189 text_element_combined (text_element* e)
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190 : text_element_list (e) { }
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191
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192 text_element_combined (text_element* e1, text_element* e2)
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193 : text_element_list(e1)
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194 { push_back (e2); }
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195
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196 void accept (text_processor& p);
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197 };
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198
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199 class
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200 OCTINTERP_API
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201 text_element_fontstyle : public text_element
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202 {
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203 public:
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204 enum fontstyle
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205 {
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206 normal,
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207 bold,
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208 italic,
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209 oblique
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210 };
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211
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212 text_element_fontstyle (fontstyle st)
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213 : text_element (), style (st) { }
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214
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215 ~text_element_fontstyle (void) { }
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216
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217 fontstyle get_fontstyle (void) const { return style; }
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218
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219 void accept (text_processor& p);
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220
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221 private:
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222 fontstyle style;
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223
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224 private:
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225 text_element_fontstyle (void);
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226 };
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227
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228 class
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229 OCTINTERP_API
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230 text_element_fontname : public text_element
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231 {
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232 public:
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233 text_element_fontname (const std::string& fname)
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234 : text_element (), name (fname) { }
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235
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236 ~text_element_fontname (void) { }
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237
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238 const std::string& get_fontname (void) const { return name; }
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239
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240 void accept (text_processor& p);
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241
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242 private:
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243 std::string name;
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244
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245 private:
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246 text_element_fontname (void);
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247 };
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248
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249 class
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250 OCTINTERP_API
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251 text_element_fontsize : public text_element
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252 {
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253 public:
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254 text_element_fontsize (double fsize)
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255 : text_element (), size (fsize) { }
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256
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257 ~text_element_fontsize (void) { }
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258
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259 double get_fontsize (void) const { return size; }
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260
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261 void accept (text_processor& p);
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262
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263 private:
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264 double size;
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265
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266 private:
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267 text_element_fontsize (void);
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268 };
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269
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270 class
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271 OCTINTERP_API
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272 text_element_color : public text_element
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273 {
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274 public:
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275 text_element_color (double r, double g, double b)
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276 : text_element (), rgb (1, 3, 0.0)
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277 {
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278 rgb(0) = r;
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279 rgb(1) = g;
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280 rgb(2) = b;
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281 }
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282
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283 text_element_color (const std::string& cname)
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284 : text_element (), rgb (1, 3, 0.0)
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285 {
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286 #define ASSIGN_COLOR(r,g,b) { rgb(0) = r; rgb(1) = g; rgb(2) = b; }
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287 if (cname == "red") ASSIGN_COLOR(1, 0, 0)
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288 else if (cname == "green") ASSIGN_COLOR(0, 1, 0)
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289 else if (cname == "yellow") ASSIGN_COLOR(1, 1, 0)
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290 else if (cname == "magenta") ASSIGN_COLOR(1, 0, 1)
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291 else if (cname == "blue") ASSIGN_COLOR(0, 0, 1)
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292 else if (cname == "black") ASSIGN_COLOR(0, 0, 0)
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293 else if (cname == "white") ASSIGN_COLOR(1, 1, 1)
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294 else if (cname == "gray") ASSIGN_COLOR(.5, .5, .5)
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295 else if (cname == "darkGreen") ASSIGN_COLOR(0, .5, 0)
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296 else if (cname == "orange") ASSIGN_COLOR(1, .65, 0)
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297 else if (cname == "lightBlue") ASSIGN_COLOR(0.68, .85, .9)
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298 #undef ASSIGN_COLOR
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299 }
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300
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301 ~text_element_color (void) { }
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302
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303 Matrix get_color (void) { return rgb; }
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304
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305 void accept (text_processor& p);
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306
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307 private:
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308 Matrix rgb;
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309 };
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310
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311 class
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312 OCTINTERP_API
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313 text_processor
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314 {
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315 public:
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316 virtual void visit (text_element_string& e) = 0;
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317
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318 virtual void visit (text_element_symbol&) { }
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319
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320 virtual void visit (text_element_list& e)
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321 {
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322 for (text_element_list::iterator it = e.begin ();
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323 it != e.end (); ++it)
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324 {
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325 (*it)->accept (*this);
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326 }
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327 }
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328
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329 virtual void visit (text_element_subscript& e)
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330 { e.get_element ()->accept (*this); }
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331
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332 virtual void visit (text_element_superscript& e)
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333 { e.get_element ()->accept (*this); }
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334
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335 virtual void visit (text_element_combined&) { }
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336
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337 virtual void visit (text_element_fontstyle&) { }
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338
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339 virtual void visit (text_element_fontname&) { }
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340
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341 virtual void visit (text_element_fontsize&) { }
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342
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343 virtual void visit (text_element_color&) { }
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344
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345 virtual void reset (void) { }
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346
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347 protected:
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348 text_processor (void) { }
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349
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350 virtual ~text_processor (void) { }
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351 };
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352
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353 #define TEXT_ELEMENT_ACCEPT(cls) \
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354 inline void \
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355 cls::accept (text_processor& p) \
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356 { p.visit (*this); }
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357
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358 TEXT_ELEMENT_ACCEPT(text_element_string)
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359 TEXT_ELEMENT_ACCEPT(text_element_symbol)
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360 TEXT_ELEMENT_ACCEPT(text_element_list)
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361 TEXT_ELEMENT_ACCEPT(text_element_subscript)
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362 TEXT_ELEMENT_ACCEPT(text_element_superscript)
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363 TEXT_ELEMENT_ACCEPT(text_element_combined)
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364 TEXT_ELEMENT_ACCEPT(text_element_fontstyle)
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365 TEXT_ELEMENT_ACCEPT(text_element_fontname)
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366 TEXT_ELEMENT_ACCEPT(text_element_fontsize)
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367 TEXT_ELEMENT_ACCEPT(text_element_color)
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368
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369 class
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370 OCTINTERP_API
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371 text_parser
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372 {
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373 public:
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374 text_parser (void) { }
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375
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376 virtual ~text_parser (void) { }
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377
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378 virtual text_element* parse (const std::string& s) = 0;
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379
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380 public:
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381 static text_element* parse (const std::string& s,
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382 const caseless_str& interpreter);
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383 };
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384
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385 class
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386 OCTINTERP_API
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387 text_parser_none : public text_parser
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388 {
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389 public:
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390 text_parser_none (void) : text_parser () { }
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391
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392 ~text_parser_none (void) { }
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393
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394 // FIXME: is it possible to use reference counting to manage the
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395 // memory for the object returned by the text parser? That would be
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396 // preferable to having to know when and where to delete the object it
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397 // creates...
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398
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399 text_element* parse (const std::string& s)
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400 {
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401 return new text_element_string (s);
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402 }
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403 };
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404
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405 class
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406 OCTINTERP_API
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407 text_parser_tex : public text_parser
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408 {
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409 public:
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410 text_parser_tex (void)
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parents: 16892
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411 : text_parser (), scanner (0), buffer_state (0), result (0)
17787
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Rik <rik@octave.org>
parents: 17744
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412 { }
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parents: 16892
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413
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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414 ~text_parser_tex (void)
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Rik <rik@octave.org>
parents: 17744
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415 { destroy_lexer (); }
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parents: 16892
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416
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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417 text_element* parse (const std::string& s);
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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418
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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419 void* get_scanner (void) { return scanner; }
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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420
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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421 void set_parse_result (text_element* e) { result = e; }
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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422
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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423 text_element* get_parse_result (void) { return result; }
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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424
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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425 private:
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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426 bool init_lexer (const std::string& s);
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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427
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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428 void destroy_lexer (void);
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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429
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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430 private:
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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431 void* scanner;
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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432
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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433 void* buffer_state;
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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434
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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435 text_element* result;
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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436 };
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Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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437
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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438 inline text_element*
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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439 text_parser::parse (const std::string& s, const caseless_str& interpreter)
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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440 {
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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441 std::auto_ptr<text_parser> parser;
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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442
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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443 if (interpreter.compare ("tex"))
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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444 parser.reset (new text_parser_tex ());
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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445 else
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Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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446 parser.reset (new text_parser_none ());
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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447
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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448 return parser->parse (s);
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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449 }
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Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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450
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
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451 #endif