Mercurial > octave
annotate libinterp/corefcn/oct-tex-lexer.in.ll @ 22003:2d3972b802ff
use consistent style for including config.h in source files
author | John W. Eaton <jwe@octave.org> |
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date | Thu, 30 Jun 2016 11:41:49 -0400 |
parents | 66f3c4e81721 |
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1 /* |
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2 |
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3 Copyright (C) 2013-2015 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 %top { |
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24 #if defined (HAVE_CONFIG_H) |
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25 # include "config.h" |
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26 #endif |
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27 |
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28 #if defined (HAVE_PRAGMA_GCC_DIAGNOSTIC) |
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29 // This one needs to be global. |
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30 #pragma GCC diagnostic ignored "-Wunused-function" |
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31 |
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32 // Disable these warnings for code that is generated by flex, including |
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33 // pattern rules. Push the current state so we can restore the warning |
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34 // state prior to functions we define at the bottom of the file. |
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35 #pragma GCC diagnostic push |
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36 #pragma GCC diagnostic ignored "-Wold-style-cast" |
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37 #pragma GCC diagnostic ignored "-Wsign-compare" |
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38 #endif |
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39 |
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40 // Define away the deprecated register storage class specifier to avoid |
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41 // potential warnings about it. |
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42 #if ! defined (register) |
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43 # define register |
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44 #endif |
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45 |
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46 } |
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47 |
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48 %option prefix = "octave_tex_" |
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49 %option noyywrap |
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50 %option reentrant |
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51 %option bison-bridge |
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52 |
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53 %option noyyalloc |
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54 %option noyyrealloc |
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55 %option noyyfree |
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56 |
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57 %x NUM_MODE |
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58 %x MAYBE_NUM_MODE |
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59 |
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60 %{ |
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61 |
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62 #include "unistd-wrappers.h" |
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63 |
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64 #include "txt-eng.h" |
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65 #include "oct-tex-parser.h" |
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66 |
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67 // FIXME: with bison 3.x, OCTAVE_TEX_STYPE appears in the generated |
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68 // oct-parse.h file, but there is no definition for YYSTYPE, which is |
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69 // needed by the code that is generated by flex. I can't seem to find |
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70 // a way to tell flex to use OCTAVE_TEX_STYPE instead of YYSTYPE in |
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71 // the code it generates, or to tell bison to provide the definition |
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72 // of YYSTYPE in the generated oct-parse.h file. |
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73 |
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74 #if defined (OCTAVE_TEX_STYPE_IS_DECLARED) && ! defined YYSTYPE |
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75 # define YYSTYPE OCTAVE_TEX_STYPE |
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76 #endif |
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77 |
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78 #define YY_NO_UNISTD_H 1 |
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79 #define isatty octave_isatty_wrapper |
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80 #define yyguts_t octave_tex_yyguts_t |
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81 |
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82 %} |
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83 |
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84 D [0-9] |
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85 NUM (({D}+\.?{D}*)|(\.{D}+)) |
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86 |
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87 %% |
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88 |
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89 %{ |
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90 // Numeric values. |
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91 %} |
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92 |
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93 <NUM_MODE>{NUM} { |
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94 int nread = sscanf (yytext, "%lf", &(yylval->num)); |
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95 |
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96 if (nread == 1) |
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97 return NUM; |
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98 } |
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99 |
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100 <NUM_MODE>[, \t]+ { } |
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101 |
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102 <NUM_MODE>"\n"|. { |
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103 yyless (0); |
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104 BEGIN (INITIAL); |
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105 } |
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106 |
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107 <MAYBE_NUM_MODE>"{" { |
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108 BEGIN (NUM_MODE); |
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109 return START; |
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110 } |
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111 |
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112 <MAYBE_NUM_MODE>"\n"|. { |
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113 yyless (0); |
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114 BEGIN (INITIAL); |
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115 } |
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116 |
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117 %{ |
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118 // Simple commands. |
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119 %} |
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120 |
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121 "\\bf" { return BF; } |
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122 "\\it" { return IT; } |
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123 "\\sl" { return SL; } |
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124 "\\rm" { return RM; } |
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125 |
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126 %{ |
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127 // Generic font commands. |
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128 %} |
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129 |
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130 "\\fontname" { return FONTNAME; } |
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131 |
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132 "\\fontsize" { |
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133 BEGIN (MAYBE_NUM_MODE); |
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134 return FONTSIZE; |
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135 } |
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136 |
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137 "\\color[rgb]" { |
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138 BEGIN (MAYBE_NUM_MODE); |
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139 return COLOR_RGB; |
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140 } |
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141 |
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142 "\\color" { return COLOR; } |
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143 |
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144 %{ |
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145 // Special characters. |
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146 %} |
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147 |
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148 "{" { return START; } |
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149 "}" { return END; } |
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150 "^" { return SUPER; } |
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151 "_" { return SUB; } |
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152 |
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153 "\\{" | |
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154 "\\}" | |
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155 "\\^" | |
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156 "\\_" | |
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157 "\\\\" { |
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158 yylval->ch = yytext[1]; |
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159 return CH; |
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160 } |
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161 |
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162 %{ |
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163 // Symbols. |
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164 %} |
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165 |
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166 @SYMBOL_RULES@ |
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167 |
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168 %{ |
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169 // Generic character. |
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170 %} |
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171 |
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172 "\n" | |
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173 . { |
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174 yylval->ch = yytext[0]; |
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175 return CH; |
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176 } |
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177 |
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178 %{ |
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179 #if defined (HAVE_PRAGMA_GCC_DIAGNOSTIC) |
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180 // Also disable this warning for functions that is generated by flex |
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181 // after the pattern rules. |
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182 #pragma GCC diagnostic ignored "-Wunused-parameter" |
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183 #endif |
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184 %} |
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185 |
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186 %% |
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187 |
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188 #if defined (HAVE_PRAGMA_GCC_DIAGNOSTIC) |
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189 // Restore prevailing warning state for remainder of the file. |
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190 #pragma GCC diagnostic pop |
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191 #endif |
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192 |
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193 void * |
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194 octave_tex_alloc (yy_size_t size, yyscan_t) |
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195 { |
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196 return malloc (size); |
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197 } |
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198 |
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199 void * |
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200 octave_tex_realloc (void *ptr, yy_size_t size, yyscan_t) |
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201 { |
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202 return realloc (ptr, size); |
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203 } |
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204 |
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205 void |
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206 octave_tex_free (void *ptr, yyscan_t) |
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207 { |
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208 free (ptr); |
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209 } |
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210 |
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211 bool |
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212 text_parser_tex::init_lexer (const std::string& s) |
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213 { |
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214 if (! scanner) |
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215 octave_tex_lex_init (&scanner); |
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216 |
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217 if (scanner) |
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218 { |
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219 if (buffer_state) |
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220 { |
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221 octave_tex__delete_buffer (reinterpret_cast<YY_BUFFER_STATE> (buffer_state), |
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222 scanner); |
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223 buffer_state = 0; |
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224 } |
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225 |
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226 buffer_state = octave_tex__scan_bytes (s.data (), s.length (), scanner); |
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227 } |
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228 |
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229 return (scanner && buffer_state); |
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230 } |
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231 |
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232 void |
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233 text_parser_tex::destroy_lexer (void) |
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234 { |
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235 if (buffer_state) |
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236 { |
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237 octave_tex__delete_buffer (reinterpret_cast<YY_BUFFER_STATE> (buffer_state), |
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238 scanner); |
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239 buffer_state = 0; |
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240 } |
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241 |
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242 if (scanner) |
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243 { |
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244 octave_tex_lex_destroy (scanner); |
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245 scanner = 0; |
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246 } |
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247 } |