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annotate libinterp/corefcn/text-engine.h @ 33617:ec2635a02328 bytecode-interpreter tip

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maint: Merge default to bytecode-interpreter.
author Markus Mützel <markus.muetzel@gmx.de>
date Tue, 21 May 2024 18:29:03 +0200
parents 0b5f3219b650
children
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2009-2024 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if ! defined (octave_text_engine_h)
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27 #define octave_text_engine_h 1
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28
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29 #include "octave-config.h"
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30
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31 #include <list>
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32 #include <memory>
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33 #include <string>
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34
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35 #include "caseless-str.h"
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36 #include "dMatrix.h"
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37
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38 OCTAVE_BEGIN_NAMESPACE(octave)
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39
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40 class text_element;
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41 class text_element_string;
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42 class text_element_symbol;
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43 class text_element_list;
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44 class text_element_subscript;
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45 class text_element_superscript;
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46 class text_element_combined;
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47 class text_element_fontname;
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48 class text_element_fontsize;
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49 class text_element_fontstyle;
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50 class text_element_color;
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51
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52 class text_processor;
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53
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54 class OCTINTERP_API text_element
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55 {
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56 public:
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57
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58 OCTAVE_DEFAULT_CONSTRUCT_COPY_MOVE (text_element)
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59
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60 virtual ~text_element () = default;
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61
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62 virtual void accept (text_processor& p) = 0;
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63 };
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64
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65 class OCTINTERP_API text_element_string : public text_element
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66 {
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67 public:
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68
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69 text_element_string (const std::string& s = "")
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70 : text_element (), m_str (s) { }
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71
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72 OCTAVE_DEFAULT_COPY_MOVE_DELETE (text_element_string)
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73
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74 std::string string_value () const { return m_str; }
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75
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76 void accept (text_processor& p);
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77
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78 private:
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79
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80 std::string m_str;
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81 };
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82
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83 class OCTINTERP_API text_element_symbol : public text_element
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84 {
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85 public:
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86
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87 enum { invalid_code = 0xFFFFFFFFU };
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88
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89 text_element_symbol () = delete;
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90
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91 text_element_symbol (int sym)
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92 : text_element (), m_symbol (sym) { }
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93
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94 OCTAVE_DEFAULT_COPY_MOVE_DELETE (text_element_symbol)
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95
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96 int get_symbol () const { return m_symbol; }
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97
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98 uint32_t get_symbol_code () 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 m_symbol;
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104 };
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105
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106 class OCTINTERP_API text_element_list
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107 : public text_element, public std::list<text_element *>
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108 {
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109 public:
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110
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111 OCTAVE_DEFAULT_CONSTRUCT_COPY_MOVE (text_element_list)
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112
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113 text_element_list (text_element *e)
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114 : text_element (), std::list<text_element*> ()
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115 {
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116 push_back (e);
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117 }
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118
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119 ~text_element_list ()
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120 {
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121 while (! empty ())
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122 {
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123 auto 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 OCTINTERP_API text_element_subscript : public text_element
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133 {
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134 public:
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135
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136 OCTAVE_DISABLE_CONSTRUCT_COPY_MOVE (text_element_subscript)
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137
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138 text_element_subscript (text_element *e)
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139 : text_element (), m_elem (e) { }
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140
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141 text_element_subscript (char c)
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142 : text_element ()
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143 { m_elem = new text_element_string (std::string (1, c)); }
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144
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145 ~text_element_subscript ()
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146 { delete m_elem; }
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147
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148 void accept (text_processor& p);
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149
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150 text_element * get_element () { return m_elem; }
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151
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152 private:
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153
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154 text_element *m_elem;
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155 };
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156
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157 class OCTINTERP_API text_element_superscript : public text_element
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158 {
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159 public:
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160
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161 OCTAVE_DISABLE_CONSTRUCT_COPY_MOVE (text_element_superscript)
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162
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163 text_element_superscript (text_element *e)
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164 : text_element (), m_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 { m_elem = new text_element_string (std::string (1, c)); }
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169
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170 ~text_element_superscript ()
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171 { delete m_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 () { return m_elem; }
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176
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177 private:
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178
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179 text_element *m_elem;
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180 };
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181
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182 class OCTINTERP_API text_element_combined : public text_element_list
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183 {
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184 public:
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185
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186 OCTAVE_DEFAULT_CONSTRUCT_COPY_MOVE_DELETE (text_element_combined)
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187
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188 text_element_combined (text_element *e)
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189 : text_element_list (e) { }
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190
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191 text_element_combined (text_element *e1, text_element *e2)
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192 : text_element_list(e1)
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193 { push_back (e2); }
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194
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195 void accept (text_processor& p);
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196 };
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197
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198 class OCTINTERP_API text_element_fontstyle : public text_element
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199 {
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200 public:
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201
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202 enum fontstyle
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203 {
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204 normal,
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205 bold,
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206 italic,
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207 oblique
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208 };
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209
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210 text_element_fontstyle () = delete;
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211
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212 text_element_fontstyle (fontstyle st)
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213 : text_element (), m_style (st) { }
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214
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215 OCTAVE_DEFAULT_COPY_MOVE_DELETE (text_element_fontstyle)
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216
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217 fontstyle get_fontstyle () const { return m_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
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223 fontstyle m_style;
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224 };
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225
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226 class OCTINTERP_API text_element_fontname : public text_element
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227 {
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228 public:
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229
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230 text_element_fontname () = delete;
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231
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232 text_element_fontname (const std::string& fname)
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233 : text_element (), m_name (fname) { }
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234
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235 OCTAVE_DEFAULT_COPY_MOVE_DELETE (text_element_fontname)
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236
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237 const std::string& get_fontname () const { return m_name; }
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238
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239 void accept (text_processor& p);
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240
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241 private:
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242
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243 std::string m_name;
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244 };
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245
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246 class OCTINTERP_API text_element_fontsize : public text_element
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247 {
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248 public:
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249
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250 text_element_fontsize () = delete;
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251
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252 text_element_fontsize (double fsize)
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253 : text_element (), m_size (fsize) { }
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254
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255 OCTAVE_DEFAULT_COPY_MOVE_DELETE (text_element_fontsize)
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256
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257 double get_fontsize () const { return m_size; }
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258
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259 void accept (text_processor& p);
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260
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261 private:
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262
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263 double m_size;
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264 };
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265
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266 class OCTINTERP_API text_element_color : public text_element
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267 {
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268 public:
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269
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270 text_element_color () = delete;
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271
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272 text_element_color (double r, double g, double b)
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273 : text_element (), m_rgb (1, 3, 0.0)
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274 {
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275 m_rgb(0) = r;
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276 m_rgb(1) = g;
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277 m_rgb(2) = b;
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278 }
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279
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280 text_element_color (const std::string& cname)
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281 : text_element (), m_rgb (1, 3, 0.0)
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282 {
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283 #define ASSIGN_COLOR(r,g,b) { m_rgb(0) = r; m_rgb(1) = g; m_rgb(2) = b; }
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284 if (cname == "red") ASSIGN_COLOR(1, 0, 0)
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285 else if (cname == "green") ASSIGN_COLOR(0, 1, 0)
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286 else if (cname == "yellow") ASSIGN_COLOR(1, 1, 0)
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287 else if (cname == "magenta") ASSIGN_COLOR(1, 0, 1)
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288 else if (cname == "blue") ASSIGN_COLOR(0, 0, 1)
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289 else if (cname == "black") ASSIGN_COLOR(0, 0, 0)
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290 else if (cname == "white") ASSIGN_COLOR(1, 1, 1)
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291 else if (cname == "gray") ASSIGN_COLOR(.5, .5, .5)
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292 else if (cname == "darkGreen") ASSIGN_COLOR(0, .5, 0)
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293 else if (cname == "orange") ASSIGN_COLOR(1, .65, 0)
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294 else if (cname == "lightBlue") ASSIGN_COLOR(0.68, .85, .9)
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295 #undef ASSIGN_COLOR
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296 }
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297
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298 OCTAVE_DEFAULT_COPY_MOVE_DELETE (text_element_color)
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299
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300 Matrix get_color () { return m_rgb; }
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301
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302 void accept (text_processor& p);
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303
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304 private:
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305
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306 Matrix m_rgb;
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307 };
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308
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309 class OCTINTERP_API text_processor
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310 {
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311 public:
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312
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313 virtual void visit (text_element_string&) { }
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314
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315 virtual void visit (text_element_symbol&) { }
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316
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317 virtual void visit (text_element_list& e)
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318 {
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319 for (auto& el_p : e)
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320 {
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321 el_p->accept (*this);
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322 }
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323 }
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324
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325 virtual void visit (text_element_subscript& e)
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326 { e.get_element ()->accept (*this); }
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327
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328 virtual void visit (text_element_superscript& e)
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329 { e.get_element ()->accept (*this); }
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330
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331 virtual void visit (text_element_combined&) { }
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332
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333 virtual void visit (text_element_fontstyle&) { }
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334
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335 virtual void visit (text_element_fontname&) { }
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336
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337 virtual void visit (text_element_fontsize&) { }
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338
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339 virtual void visit (text_element_color&) { }
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340
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341 virtual void reset () { }
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342
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343 protected:
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344
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345 OCTAVE_DEFAULT_CONSTRUCT_COPY_MOVE (text_processor)
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346
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347 virtual ~text_processor () = default;
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348 };
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349
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350 #define TEXT_ELEMENT_ACCEPT(cls) \
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351 inline void \
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352 cls::accept (text_processor& p) \
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353 { \
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354 p.visit (*this); \
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355 }
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356
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357 TEXT_ELEMENT_ACCEPT(text_element_string)
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358 TEXT_ELEMENT_ACCEPT(text_element_symbol)
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359 TEXT_ELEMENT_ACCEPT(text_element_list)
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360 TEXT_ELEMENT_ACCEPT(text_element_subscript)
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361 TEXT_ELEMENT_ACCEPT(text_element_superscript)
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362 TEXT_ELEMENT_ACCEPT(text_element_combined)
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363 TEXT_ELEMENT_ACCEPT(text_element_fontstyle)
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364 TEXT_ELEMENT_ACCEPT(text_element_fontname)
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365 TEXT_ELEMENT_ACCEPT(text_element_fontsize)
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366 TEXT_ELEMENT_ACCEPT(text_element_color)
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367
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368 class OCTINTERP_API text_parser
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369 {
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370 public:
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371
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372 OCTAVE_DEFAULT_CONSTRUCT_COPY_MOVE (text_parser)
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373
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374 virtual ~text_parser () = default;
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375
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376 virtual text_element * parse (const std::string& s) = 0;
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377
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378 public:
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379 static text_element * parse (const std::string& s,
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380 const caseless_str& interpreter);
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381 };
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382
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383 class OCTINTERP_API text_parser_none : public text_parser
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384 {
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385 public:
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386
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387 OCTAVE_DEFAULT_CONSTRUCT_COPY_MOVE_DELETE (text_parser_none)
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388
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389 // FIXME: is it possible to use reference counting to manage the
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390 // memory for the object returned by the text parser? That would be
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391 // preferable to having to know when and where to delete the object it
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392 // creates...
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393
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394 text_element * parse (const std::string& s)
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395 {
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396 return new text_element_string (s);
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397 }
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398 };
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399
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400 class OCTINTERP_API text_parser_tex : public text_parser
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401 {
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402 public:
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403
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404 text_parser_tex ()
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405 : text_parser (), m_scanner (nullptr), m_buffer_state (nullptr),
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406 m_result (nullptr)
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407 { }
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408
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409 OCTAVE_DISABLE_COPY_MOVE (text_parser_tex)
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410
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411 ~text_parser_tex ()
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412 { destroy_lexer (); }
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413
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414 text_element * parse (const std::string& s);
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415
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416 void * get_scanner () { return m_scanner; }
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417
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418 void set_parse_result (text_element *e) { m_result = e; }
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419
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420 text_element * get_parse_result () { return m_result; }
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421
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422 private:
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423 bool init_lexer (const std::string& s);
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424
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425 void destroy_lexer ();
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426
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427 //--------
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428
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429 void *m_scanner;
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430
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431 void *m_buffer_state;
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432
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433 text_element *m_result;
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434 };
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parents: 10313
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435
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436 inline text_element *
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437 text_parser::parse (const std::string& s, const caseless_str& interpreter)
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438 {
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439 std::unique_ptr<text_parser> parser;
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440
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441 if (interpreter.compare ("tex"))
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442 parser.reset (new text_parser_tex ());
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443 else
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444 parser.reset (new text_parser_none ());
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445
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446 return parser->parse (s);
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447 }
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448
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449 OCTAVE_END_NAMESPACE(octave)
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Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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450
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451 #endif