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annotate libinterp/corefcn/txt-eng.h @ 21307:61c96c37ce69

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Use std::unique_ptr to replace deprecated std::auto_ptr. * ov-cell.h, event-queue.h, txt-eng.h, idx-vector.cc, idx-vector.h, unwind-prot.h: Use std::unique_ptr to replace deprecated std::auto_ptr.
author Rik <rik@octave.org>
date Fri, 19 Feb 2016 09:41:41 -0800
parents 1473547f50f5
children e43d83253e28
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 (octave_txt_eng_h)
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24 #define octave_txt_eng_h 1
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25
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26 #include "octave-config.h"
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27
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28 #include <memory>
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29 #include <string>
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30
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31 #include "base-list.h"
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32 #include "caseless-str.h"
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33 #include "dMatrix.h"
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34
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35 class text_element;
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36 class text_element_string;
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37 class text_element_symbol;
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38 class text_element_list;
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39 class text_element_subscript;
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40 class text_element_superscript;
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41 class text_element_combined;
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42 class text_element_fontname;
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43 class text_element_fontsize;
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44 class text_element_fontstyle;
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45 class text_element_color;
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46
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47 class text_processor;
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48
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49 class
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50 OCTINTERP_API
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51 text_element
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52 {
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53 public:
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54 text_element (void) { }
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55
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56 virtual ~text_element (void) { }
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57
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58 virtual void accept (text_processor& p) = 0;
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59
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60 private:
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61 text_element (const text_element&);
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62 };
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63
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64 class
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65 OCTINTERP_API
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66 text_element_string : public text_element
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67 {
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68 public:
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69 text_element_string (const std::string& s = "")
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70 : text_element (), str (s) { }
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71
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72 ~text_element_string (void) { }
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73
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74 std::string string_value (void) const { return 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 std::string str;
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80
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81 private:
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82 text_element_string (const text_element_string &);
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83 };
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84
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85 class
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86 OCTINTERP_API
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87 text_element_symbol : public text_element
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88 {
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89 public:
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90 enum { invalid_code = 0xFFFFFFFFU };
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91
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92 public:
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93 text_element_symbol (int sym)
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94 : text_element (), symbol (sym) { }
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95
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96 ~text_element_symbol (void) { }
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97
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98 int get_symbol (void) const { return symbol; }
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99
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100 uint32_t get_symbol_code (void) const;
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101
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102 void accept (text_processor& p);
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103
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104 private:
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105 int symbol;
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106 };
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107
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108 class
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109 OCTINTERP_API
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110 text_element_list
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111 : public text_element, public octave_base_list<text_element *>
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112 {
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113 public:
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114 text_element_list (void)
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115 : text_element (), octave_base_list<text_element*> () { }
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116
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117 text_element_list (text_element* e)
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118 : text_element (), octave_base_list<text_element*> ()
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119 { push_back (e); }
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120
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121 ~text_element_list (void)
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122 {
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123 while (! empty ())
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124 {
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125 iterator it = begin ();
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126 delete (*it);
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127 erase (it);
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128 }
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129 }
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130
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131 void accept (text_processor& p);
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132 };
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133
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134 class
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135 OCTINTERP_API
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136 text_element_subscript : public text_element
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137 {
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138 public:
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139 text_element_subscript (text_element* e)
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140 : text_element (), elem (e) { }
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141
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142 text_element_subscript (char c)
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143 : text_element ()
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144 { elem = new text_element_string (std::string (1, c)); }
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145
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146 ~text_element_subscript (void)
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147 { delete elem; }
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148
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149 void accept (text_processor& p);
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150
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151 text_element* get_element (void) { return elem; }
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152
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153 private:
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154 text_element* elem;
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155
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156 private:
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157 text_element_subscript (void);
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158 };
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159
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160 class
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161 OCTINTERP_API
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162 text_element_superscript : public text_element
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163 {
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164 public:
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165 text_element_superscript (text_element* e)
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166 : text_element (), elem (e) { }
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167
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168 text_element_superscript (char c)
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169 : text_element ()
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170 { elem = new text_element_string (std::string (1, c)); }
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171
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172 ~text_element_superscript (void)
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173 { delete elem; }
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174
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175 void accept (text_processor& p);
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176
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177 text_element* get_element (void) { return elem; }
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178
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179 private:
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180 text_element* elem;
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181
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182 private:
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183 text_element_superscript (void);
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184 };
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185
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186 class
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187 OCTINTERP_API
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188 text_element_combined : public text_element_list
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189 {
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190 public:
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191 text_element_combined (text_element* e)
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192 : text_element_list (e) { }
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193
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194 text_element_combined (text_element* e1, text_element* e2)
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195 : text_element_list(e1)
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196 { push_back (e2); }
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197
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198 void accept (text_processor& p);
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199 };
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200
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201 class
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202 OCTINTERP_API
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203 text_element_fontstyle : public text_element
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204 {
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205 public:
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206 enum fontstyle
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207 {
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208 normal,
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209 bold,
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210 italic,
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211 oblique
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212 };
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213
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214 text_element_fontstyle (fontstyle st)
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215 : text_element (), style (st) { }
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216
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217 ~text_element_fontstyle (void) { }
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218
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219 fontstyle get_fontstyle (void) const { return style; }
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220
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221 void accept (text_processor& p);
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222
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223 private:
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224 fontstyle style;
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225
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226 private:
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227 text_element_fontstyle (void);
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228 };
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229
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230 class
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231 OCTINTERP_API
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232 text_element_fontname : public text_element
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233 {
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234 public:
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235 text_element_fontname (const std::string& fname)
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236 : text_element (), name (fname) { }
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237
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238 ~text_element_fontname (void) { }
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239
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240 const std::string& get_fontname (void) const { return name; }
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241
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242 void accept (text_processor& p);
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243
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244 private:
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245 std::string name;
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246
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247 private:
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248 text_element_fontname (void);
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249 };
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250
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251 class
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252 OCTINTERP_API
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253 text_element_fontsize : public text_element
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254 {
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255 public:
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256 text_element_fontsize (double fsize)
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257 : text_element (), size (fsize) { }
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258
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259 ~text_element_fontsize (void) { }
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260
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261 double get_fontsize (void) const { return size; }
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262
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263 void accept (text_processor& p);
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264
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265 private:
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266 double size;
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267
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268 private:
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269 text_element_fontsize (void);
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270 };
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271
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272 class
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273 OCTINTERP_API
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274 text_element_color : public text_element
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275 {
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276 public:
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277 text_element_color (double r, double g, double b)
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278 : text_element (), rgb (1, 3, 0.0)
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279 {
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280 rgb(0) = r;
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281 rgb(1) = g;
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282 rgb(2) = b;
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283 }
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284
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285 text_element_color (const std::string& cname)
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286 : text_element (), rgb (1, 3, 0.0)
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287 {
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288 #define ASSIGN_COLOR(r,g,b) { rgb(0) = r; rgb(1) = g; rgb(2) = b; }
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289 if (cname == "red") ASSIGN_COLOR(1, 0, 0)
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290 else if (cname == "green") ASSIGN_COLOR(0, 1, 0)
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291 else if (cname == "yellow") ASSIGN_COLOR(1, 1, 0)
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292 else if (cname == "magenta") ASSIGN_COLOR(1, 0, 1)
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293 else if (cname == "blue") ASSIGN_COLOR(0, 0, 1)
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294 else if (cname == "black") ASSIGN_COLOR(0, 0, 0)
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295 else if (cname == "white") ASSIGN_COLOR(1, 1, 1)
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296 else if (cname == "gray") ASSIGN_COLOR(.5, .5, .5)
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297 else if (cname == "darkGreen") ASSIGN_COLOR(0, .5, 0)
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298 else if (cname == "orange") ASSIGN_COLOR(1, .65, 0)
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299 else if (cname == "lightBlue") ASSIGN_COLOR(0.68, .85, .9)
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300 #undef ASSIGN_COLOR
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301 }
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302
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303 ~text_element_color (void) { }
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304
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305 Matrix get_color (void) { return rgb; }
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306
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307 void accept (text_processor& p);
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308
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309 private:
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310 Matrix rgb;
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311 };
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312
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313 class
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314 OCTINTERP_API
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315 text_processor
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316 {
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317 public:
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318 virtual void visit (text_element_string& e) = 0;
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319
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320 virtual void visit (text_element_symbol&) { }
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321
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322 virtual void visit (text_element_list& e)
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323 {
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324 for (text_element_list::iterator it = e.begin ();
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325 it != e.end (); ++it)
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326 {
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327 (*it)->accept (*this);
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328 }
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329 }
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330
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331 virtual void visit (text_element_subscript& e)
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332 { e.get_element ()->accept (*this); }
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333
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334 virtual void visit (text_element_superscript& e)
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335 { e.get_element ()->accept (*this); }
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336
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337 virtual void visit (text_element_combined&) { }
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338
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339 virtual void visit (text_element_fontstyle&) { }
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340
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341 virtual void visit (text_element_fontname&) { }
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342
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343 virtual void visit (text_element_fontsize&) { }
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344
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345 virtual void visit (text_element_color&) { }
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346
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347 virtual void reset (void) { }
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348
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349 protected:
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350 text_processor (void) { }
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351
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352 virtual ~text_processor (void) { }
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353 };
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354
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355 #define TEXT_ELEMENT_ACCEPT(cls) \
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356 inline void \
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357 cls::accept (text_processor& p) \
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358 { p.visit (*this); }
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359
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360 TEXT_ELEMENT_ACCEPT(text_element_string)
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361 TEXT_ELEMENT_ACCEPT(text_element_symbol)
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362 TEXT_ELEMENT_ACCEPT(text_element_list)
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363 TEXT_ELEMENT_ACCEPT(text_element_subscript)
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364 TEXT_ELEMENT_ACCEPT(text_element_superscript)
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365 TEXT_ELEMENT_ACCEPT(text_element_combined)
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366 TEXT_ELEMENT_ACCEPT(text_element_fontstyle)
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367 TEXT_ELEMENT_ACCEPT(text_element_fontname)
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368 TEXT_ELEMENT_ACCEPT(text_element_fontsize)
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369 TEXT_ELEMENT_ACCEPT(text_element_color)
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370
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371 class
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372 OCTINTERP_API
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373 text_parser
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374 {
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375 public:
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376 text_parser (void) { }
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377
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378 virtual ~text_parser (void) { }
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379
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380 virtual text_element* parse (const std::string& s) = 0;
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381
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382 public:
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383 static text_element* parse (const std::string& s,
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384 const caseless_str& interpreter);
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385 };
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386
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387 class
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388 OCTINTERP_API
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389 text_parser_none : public text_parser
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390 {
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391 public:
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392 text_parser_none (void) : text_parser () { }
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393
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394 ~text_parser_none (void) { }
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395
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396 // FIXME: is it possible to use reference counting to manage the
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397 // memory for the object returned by the text parser? That would be
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398 // preferable to having to know when and where to delete the object it
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399 // creates...
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400
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401 text_element* parse (const std::string& s)
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402 {
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403 return new text_element_string (s);
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404 }
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405 };
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406
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407 class
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408 OCTINTERP_API
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409 text_parser_tex : public text_parser
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410 {
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411 public:
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412 text_parser_tex (void)
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413 : text_parser (), scanner (0), buffer_state (0), result (0)
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414 { }
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415
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416 ~text_parser_tex (void)
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417 { destroy_lexer (); }
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418
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419 text_element* parse (const std::string& s);
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Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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420
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421 void* get_scanner (void) { return scanner; }
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parents: 16892
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422
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423 void set_parse_result (text_element* e) { result = e; }
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parents: 16892
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424
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Michael Goffioul <michael.goffioul@gmail.com>
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425 text_element* get_parse_result (void) { return result; }
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parents: 16892
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426
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427 private:
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parents: 16892
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428 bool init_lexer (const std::string& s);
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parents: 16892
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429
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430 void destroy_lexer (void);
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431
5b088598df1d Add simple TeX parser based on flex/bison.
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432 private:
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433 void* scanner;
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parents: 16892
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434
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
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435 void* buffer_state;
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parents: 16892
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436
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437 text_element* result;
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438 };
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parents: 16892
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439
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440 inline text_element*
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441 text_parser::parse (const std::string& s, const caseless_str& interpreter)
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parents: 16892
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442 {
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443 std::unique_ptr<text_parser> parser;
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444
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
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445 if (interpreter.compare ("tex"))
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parents: 16892
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446 parser.reset (new text_parser_tex ());
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447 else
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448 parser.reset (new text_parser_none ());
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449
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450 return parser->parse (s);
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451 }
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452
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4af6e29449c1 [mq]: graphics_text_engine
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453 #endif