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maint: update Octave Project Developers copyright for the new year
author John W. Eaton <jwe@octave.org>
date Fri, 22 Dec 2023 12:08:17 -0500
parents 1daf8bfceac3
children 4b601ca024d5
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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 <memory>
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32 #include <string>
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33
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34 #include "base-list.h"
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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
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55 OCTINTERP_API
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56 text_element
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57 {
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58 public:
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59
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60 OCTAVE_DEFAULT_CONSTRUCT_COPY_MOVE (text_element)
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61
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62 virtual ~text_element () = default;
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63
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64 virtual void accept (text_processor& p) = 0;
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65 };
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66
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67 class
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68 OCTINTERP_API
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69 text_element_string : public text_element
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70 {
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71 public:
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72
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73 text_element_string (const std::string& s = "")
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74 : text_element (), m_str (s) { }
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75
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76 OCTAVE_DEFAULT_COPY_MOVE_DELETE (text_element_string)
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77
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78 std::string string_value () const { return m_str; }
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79
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80 void accept (text_processor& p);
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81
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82 private:
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83
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84 std::string m_str;
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85 };
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86
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87 class
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88 OCTINTERP_API
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89 text_element_symbol : public text_element
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90 {
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91 public:
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92
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93 enum { invalid_code = 0xFFFFFFFFU };
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94
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95 text_element_symbol () = delete;
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96
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97 text_element_symbol (int sym)
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98 : text_element (), m_symbol (sym) { }
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99
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100 OCTAVE_DEFAULT_COPY_MOVE_DELETE (text_element_symbol)
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101
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102 int get_symbol () const { return m_symbol; }
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103
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104 uint32_t get_symbol_code () const;
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105
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106 void accept (text_processor& p);
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107
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108 private:
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109 int m_symbol;
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110 };
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111
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112 class
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113 OCTINTERP_API
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114 text_element_list
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115 : public text_element, public base_list<text_element *>
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116 {
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117 public:
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118
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119 OCTAVE_DEFAULT_CONSTRUCT_COPY_MOVE (text_element_list)
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120
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121 text_element_list (text_element *e)
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122 : text_element (), base_list<text_element*> ()
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123 {
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124 push_back (e);
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125 }
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126
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127 ~text_element_list ()
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128 {
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129 while (! empty ())
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130 {
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131 auto it = begin ();
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132 delete (*it);
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133 erase (it);
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134 }
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135 }
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136
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137 void accept (text_processor& p);
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138 };
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139
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140 class
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141 OCTINTERP_API
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142 text_element_subscript : public text_element
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143 {
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144 public:
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145
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146 OCTAVE_DISABLE_CONSTRUCT_COPY_MOVE (text_element_subscript)
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147
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148 text_element_subscript (text_element *e)
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149 : text_element (), m_elem (e) { }
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150
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151 text_element_subscript (char c)
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152 : text_element ()
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153 { m_elem = new text_element_string (std::string (1, c)); }
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154
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155 ~text_element_subscript ()
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156 { delete m_elem; }
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157
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158 void accept (text_processor& p);
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159
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160 text_element * get_element () { return m_elem; }
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161
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162 private:
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163
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164 text_element *m_elem;
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165 };
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166
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167 class
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168 OCTINTERP_API
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169 text_element_superscript : public text_element
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170 {
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171 public:
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172
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173 OCTAVE_DISABLE_CONSTRUCT_COPY_MOVE (text_element_superscript)
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174
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175 text_element_superscript (text_element *e)
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176 : text_element (), m_elem (e) { }
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177
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178 text_element_superscript (char c)
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179 : text_element ()
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180 { m_elem = new text_element_string (std::string (1, c)); }
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181
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182 ~text_element_superscript ()
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183 { delete m_elem; }
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184
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185 void accept (text_processor& p);
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186
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187 text_element * get_element () { return m_elem; }
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188
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189 private:
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190
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191 text_element *m_elem;
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192 };
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193
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194 class
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195 OCTINTERP_API
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196 text_element_combined : public text_element_list
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197 {
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198 public:
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199
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200 OCTAVE_DEFAULT_CONSTRUCT_COPY_MOVE_DELETE (text_element_combined)
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201
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202 text_element_combined (text_element *e)
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203 : text_element_list (e) { }
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204
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205 text_element_combined (text_element *e1, text_element *e2)
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206 : text_element_list(e1)
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207 { push_back (e2); }
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208
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209 void accept (text_processor& p);
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210 };
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211
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212 class
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213 OCTINTERP_API
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214 text_element_fontstyle : public text_element
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215 {
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216 public:
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217
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218 enum fontstyle
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219 {
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220 normal,
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221 bold,
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222 italic,
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223 oblique
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224 };
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225
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226 text_element_fontstyle () = delete;
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227
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228 text_element_fontstyle (fontstyle st)
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229 : text_element (), m_style (st) { }
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230
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231 OCTAVE_DEFAULT_COPY_MOVE_DELETE (text_element_fontstyle)
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232
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233 fontstyle get_fontstyle () const { return m_style; }
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234
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235 void accept (text_processor& p);
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236
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237 private:
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238
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239 fontstyle m_style;
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240 };
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241
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242 class
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243 OCTINTERP_API
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244 text_element_fontname : public text_element
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245 {
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246 public:
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247
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248 text_element_fontname () = delete;
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249
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250 text_element_fontname (const std::string& fname)
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251 : text_element (), m_name (fname) { }
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252
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253 OCTAVE_DEFAULT_COPY_MOVE_DELETE (text_element_fontname)
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254
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255 const std::string& get_fontname () const { return m_name; }
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256
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257 void accept (text_processor& p);
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258
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259 private:
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260
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261 std::string m_name;
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262 };
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263
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264 class
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265 OCTINTERP_API
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266 text_element_fontsize : 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_fontsize () = delete;
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271
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272 text_element_fontsize (double fsize)
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273 : text_element (), m_size (fsize) { }
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274
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275 OCTAVE_DEFAULT_COPY_MOVE_DELETE (text_element_fontsize)
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276
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277 double get_fontsize () const { return m_size; }
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278
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279 void accept (text_processor& p);
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280
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281 private:
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282
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283 double m_size;
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284 };
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285
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286 class
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287 OCTINTERP_API
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288 text_element_color : public text_element
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289 {
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290 public:
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291
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292 text_element_color () = delete;
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293
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294 text_element_color (double r, double g, double b)
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295 : text_element (), m_rgb (1, 3, 0.0)
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296 {
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297 m_rgb(0) = r;
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298 m_rgb(1) = g;
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299 m_rgb(2) = b;
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300 }
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301
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302 text_element_color (const std::string& cname)
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303 : text_element (), m_rgb (1, 3, 0.0)
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304 {
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305 #define ASSIGN_COLOR(r,g,b) { m_rgb(0) = r; m_rgb(1) = g; m_rgb(2) = b; }
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306 if (cname == "red") ASSIGN_COLOR(1, 0, 0)
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307 else if (cname == "green") ASSIGN_COLOR(0, 1, 0)
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308 else if (cname == "yellow") ASSIGN_COLOR(1, 1, 0)
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309 else if (cname == "magenta") ASSIGN_COLOR(1, 0, 1)
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310 else if (cname == "blue") ASSIGN_COLOR(0, 0, 1)
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311 else if (cname == "black") ASSIGN_COLOR(0, 0, 0)
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312 else if (cname == "white") ASSIGN_COLOR(1, 1, 1)
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313 else if (cname == "gray") ASSIGN_COLOR(.5, .5, .5)
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314 else if (cname == "darkGreen") ASSIGN_COLOR(0, .5, 0)
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315 else if (cname == "orange") ASSIGN_COLOR(1, .65, 0)
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316 else if (cname == "lightBlue") ASSIGN_COLOR(0.68, .85, .9)
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317 #undef ASSIGN_COLOR
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318 }
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319
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320 OCTAVE_DEFAULT_COPY_MOVE_DELETE (text_element_color)
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321
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322 Matrix get_color () { return m_rgb; }
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323
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324 void accept (text_processor& p);
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325
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326 private:
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327
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328 Matrix m_rgb;
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329 };
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330
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331 class
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332 OCTINTERP_API
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333 text_processor
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334 {
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335 public:
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336
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337 virtual void visit (text_element_string&) { }
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338
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339 virtual void visit (text_element_symbol&) { }
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340
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341 virtual void visit (text_element_list& e)
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342 {
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343 for (auto& el_p : e)
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344 {
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345 el_p->accept (*this);
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346 }
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347 }
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348
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349 virtual void visit (text_element_subscript& e)
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350 { e.get_element ()->accept (*this); }
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351
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352 virtual void visit (text_element_superscript& e)
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353 { e.get_element ()->accept (*this); }
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354
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355 virtual void visit (text_element_combined&) { }
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356
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357 virtual void visit (text_element_fontstyle&) { }
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358
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359 virtual void visit (text_element_fontname&) { }
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360
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361 virtual void visit (text_element_fontsize&) { }
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362
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363 virtual void visit (text_element_color&) { }
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364
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365 virtual void reset () { }
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366
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367 protected:
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368
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369 OCTAVE_DEFAULT_CONSTRUCT_COPY_MOVE (text_processor)
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370
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371 virtual ~text_processor () = default;
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372 };
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373
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374 #define TEXT_ELEMENT_ACCEPT(cls) \
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375 inline void \
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376 cls::accept (text_processor& p) \
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377 { \
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378 p.visit (*this); \
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379 }
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380
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381 TEXT_ELEMENT_ACCEPT(text_element_string)
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382 TEXT_ELEMENT_ACCEPT(text_element_symbol)
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383 TEXT_ELEMENT_ACCEPT(text_element_list)
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384 TEXT_ELEMENT_ACCEPT(text_element_subscript)
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385 TEXT_ELEMENT_ACCEPT(text_element_superscript)
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386 TEXT_ELEMENT_ACCEPT(text_element_combined)
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387 TEXT_ELEMENT_ACCEPT(text_element_fontstyle)
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388 TEXT_ELEMENT_ACCEPT(text_element_fontname)
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389 TEXT_ELEMENT_ACCEPT(text_element_fontsize)
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390 TEXT_ELEMENT_ACCEPT(text_element_color)
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391
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392 class
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393 OCTINTERP_API
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394 text_parser
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395 {
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396 public:
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397
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398 OCTAVE_DEFAULT_CONSTRUCT_COPY_MOVE (text_parser)
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399
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400 virtual ~text_parser () = default;
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401
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402 virtual text_element * parse (const std::string& s) = 0;
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403
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404 public:
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405 static text_element * parse (const std::string& s,
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406 const caseless_str& interpreter);
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407 };
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408
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409 class
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410 OCTINTERP_API
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411 text_parser_none : public text_parser
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412 {
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413 public:
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414
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415 OCTAVE_DEFAULT_CONSTRUCT_COPY_MOVE_DELETE (text_parser_none)
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416
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417 // FIXME: is it possible to use reference counting to manage the
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418 // memory for the object returned by the text parser? That would be
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419 // preferable to having to know when and where to delete the object it
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420 // creates...
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421
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422 text_element * parse (const std::string& s)
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423 {
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424 return new text_element_string (s);
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425 }
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426 };
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427
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428 class
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429 OCTINTERP_API
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430 text_parser_tex : public text_parser
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431 {
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432 public:
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433
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434 text_parser_tex ()
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435 : text_parser (), m_scanner (nullptr), m_buffer_state (nullptr),
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436 m_result (nullptr)
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437 { }
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438
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439 OCTAVE_DISABLE_COPY_MOVE (text_parser_tex)
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440
31771
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441 ~text_parser_tex ()
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442 { destroy_lexer (); }
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443
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444 text_element * parse (const std::string& s);
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445
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446 void * get_scanner () { return m_scanner; }
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447
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448 void set_parse_result (text_element *e) { m_result = e; }
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parents:
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449
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450 text_element * get_parse_result () { return m_result; }
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451
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452 private:
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453 bool init_lexer (const std::string& s);
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454
31771
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455 void destroy_lexer ();
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456
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457 //--------
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458
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459 void *m_scanner;
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460
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461 void *m_buffer_state;
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462
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463 text_element *m_result;
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464 };
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465
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466 inline text_element *
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467 text_parser::parse (const std::string& s, const caseless_str& interpreter)
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468 {
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469 std::unique_ptr<text_parser> parser;
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470
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471 if (interpreter.compare ("tex"))
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472 parser.reset (new text_parser_tex ());
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473 else
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474 parser.reset (new text_parser_none ());
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475
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476 return parser->parse (s);
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477 }
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Rik <rik@octave.org>
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478
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Rik <rik@octave.org>
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479 OCTAVE_END_NAMESPACE(octave)
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480
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481 #endif