Mercurial > octave
annotate libinterp/corefcn/oct-tex-lexer.in.ll @ 21910:4d723ba06b4a
provide wrappers for some unistd.h functions
* liboctave/wrappers/unistd-wrappers.c,
liboctave/wrappers/unistd-wrappers.h: New files.
* liboctave/wrappers/module.mk: Update.
* gl2ps-print.cc, oct-hist.cc, oct-procbuf.cc, oct-tex-lexer.in.ll,
sysdep.cc, octave.cc, parse-tree/lex.ll, file-ops.cc, lo-sysdep.cc,
oct-env.cc, oct-syscalls.cc, cmd-edit.cc, kpse.cc:
Use wrappers instead of calling unistd.h functions directly.
author | John W. Eaton <jwe@octave.org> |
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date | Tue, 14 Jun 2016 18:10:04 -0400 |
parents | 72bf7fbc8210 |
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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 this warning 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 #endif |
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38 |
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39 // Define away the deprecated register storage class specifier to avoid |
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40 // potential warnings about it. |
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41 #if ! defined (register) |
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42 # define register |
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43 #endif |
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44 |
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45 } |
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46 |
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47 %option prefix = "octave_tex_" |
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48 %option noyywrap |
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49 %option reentrant |
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50 %option bison-bridge |
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51 |
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52 %option noyyalloc |
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53 %option noyyrealloc |
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54 %option noyyfree |
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55 |
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56 %x NUM_MODE |
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57 %x MAYBE_NUM_MODE |
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58 |
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59 %{ |
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60 |
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61 #include "unistd-wrappers.h" |
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62 |
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63 #include "txt-eng.h" |
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64 #include "oct-tex-parser.h" |
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65 |
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66 // FIXME: with bison 3.x, OCTAVE_TEX_STYPE appears in the generated |
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67 // oct-parse.h file, but there is no definition for YYSTYPE, which is |
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68 // needed by the code that is generated by flex. I can't seem to find |
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69 // a way to tell flex to use OCTAVE_TEX_STYPE instead of YYSTYPE in |
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70 // the code it generates, or to tell bison to provide the definition |
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71 // of YYSTYPE in the generated oct-parse.h file. |
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72 |
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73 #if defined (OCTAVE_TEX_STYPE_IS_DECLARED) && ! defined YYSTYPE |
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74 # define YYSTYPE OCTAVE_TEX_STYPE |
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75 #endif |
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76 |
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77 #define YY_NO_UNISTD_H 1 |
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78 #define isatty octave_isatty_wrapper |
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79 |
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80 #if defined (GNULIB_NAMESPACE) |
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81 // Calls to the following functions appear in the generated output |
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82 // from flex without the namespace tag. Redefine them so we will use |
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83 // them via the gnulib namespace. |
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84 # define fprintf GNULIB_NAMESPACE::fprintf |
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85 # define fread GNULIB_NAMESPACE::fread |
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86 # define fwrite GNULIB_NAMESPACE::fwrite |
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87 # define getc GNULIB_NAMESPACE::getc |
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88 # define malloc GNULIB_NAMESPACE::malloc |
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89 # define realloc GNULIB_NAMESPACE::realloc |
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90 #endif |
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91 |
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92 %} |
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93 |
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94 D [0-9] |
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95 NUM (({D}+\.?{D}*)|(\.{D}+)) |
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96 |
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97 %% |
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98 |
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99 %{ |
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100 // Numeric values. |
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101 %} |
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102 |
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103 <NUM_MODE>{NUM} { |
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104 int nread = sscanf (yytext, "%lf", &(yylval->num)); |
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105 |
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106 if (nread == 1) |
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107 return NUM; |
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108 } |
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109 |
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110 <NUM_MODE>[, \t]+ { } |
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111 |
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112 <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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117 <MAYBE_NUM_MODE>"{" { |
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118 BEGIN (NUM_MODE); |
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119 return START; |
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120 } |
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121 |
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122 <MAYBE_NUM_MODE>"\n"|. { |
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123 yyless (0); |
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124 BEGIN (INITIAL); |
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125 } |
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126 |
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127 %{ |
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128 // Simple commands. |
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129 %} |
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130 |
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131 "\\bf" { return BF; } |
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132 "\\it" { return IT; } |
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133 "\\sl" { return SL; } |
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134 "\\rm" { return RM; } |
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135 |
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136 %{ |
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137 // Generic font commands. |
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138 %} |
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139 |
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140 "\\fontname" { return FONTNAME; } |
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141 |
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142 "\\fontsize" { |
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143 BEGIN (MAYBE_NUM_MODE); |
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144 return FONTSIZE; |
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145 } |
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146 |
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147 "\\color[rgb]" { |
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148 BEGIN (MAYBE_NUM_MODE); |
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149 return COLOR_RGB; |
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150 } |
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151 |
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152 "\\color" { return COLOR; } |
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153 |
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154 %{ |
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155 // Special characters. |
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156 %} |
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157 |
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158 "{" { return START; } |
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159 "}" { return END; } |
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160 "^" { return SUPER; } |
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161 "_" { return SUB; } |
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162 |
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163 "\\{" | |
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164 "\\}" | |
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165 "\\^" | |
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166 "\\_" | |
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167 "\\\\" { |
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168 yylval->ch = yytext[1]; |
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169 return CH; |
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170 } |
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171 |
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172 %{ |
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173 // Symbols. |
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174 %} |
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175 |
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176 @SYMBOL_RULES@ |
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177 |
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178 %{ |
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179 // Generic character. |
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180 %} |
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181 |
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182 "\n" | |
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183 . { |
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184 yylval->ch = yytext[0]; |
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185 return CH; |
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186 } |
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187 |
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188 %{ |
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189 #if defined (HAVE_PRAGMA_GCC_DIAGNOSTIC) |
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190 // Also disable this warning for functions that is generated by flex |
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191 // after the pattern rules. |
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192 #pragma GCC diagnostic ignored "-Wunused-parameter" |
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193 #endif |
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194 %} |
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195 |
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196 %% |
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197 |
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198 #if defined (HAVE_PRAGMA_GCC_DIAGNOSTIC) |
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199 // Restore prevailing warning state for remainder of the file. |
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200 #pragma GCC diagnostic pop |
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201 #endif |
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202 |
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203 void * |
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204 octave_tex_alloc (yy_size_t size, yyscan_t) |
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205 { |
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206 return malloc (size); |
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207 } |
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208 |
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209 void * |
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210 octave_tex_realloc (void *ptr, yy_size_t size, yyscan_t) |
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211 { |
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212 return realloc (ptr, size); |
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213 } |
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214 |
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215 void |
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216 octave_tex_free (void *ptr, yyscan_t) |
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217 { |
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218 free (ptr); |
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219 } |
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220 |
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221 bool |
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222 text_parser_tex::init_lexer (const std::string& s) |
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223 { |
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224 if (! scanner) |
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225 octave_tex_lex_init (&scanner); |
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226 |
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227 if (scanner) |
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228 { |
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229 if (buffer_state) |
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230 { |
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231 octave_tex__delete_buffer (reinterpret_cast<YY_BUFFER_STATE> (buffer_state), |
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232 scanner); |
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233 buffer_state = 0; |
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234 } |
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235 |
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236 buffer_state = octave_tex__scan_bytes (s.data (), s.length (), scanner); |
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237 } |
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238 |
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239 return (scanner && buffer_state); |
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240 } |
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241 |
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242 void |
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243 text_parser_tex::destroy_lexer (void) |
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244 { |
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
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245 if (buffer_state) |
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Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents:
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246 { |
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Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents:
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247 octave_tex__delete_buffer (reinterpret_cast<YY_BUFFER_STATE> (buffer_state), |
5b088598df1d
Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents:
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248 scanner); |
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Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents:
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249 buffer_state = 0; |
5b088598df1d
Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents:
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250 } |
5b088598df1d
Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff
changeset
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251 |
5b088598df1d
Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff
changeset
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252 if (scanner) |
5b088598df1d
Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents:
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253 { |
5b088598df1d
Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents:
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254 octave_tex_lex_destroy (scanner); |
5b088598df1d
Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents:
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changeset
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255 scanner = 0; |
5b088598df1d
Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents:
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256 } |
5b088598df1d
Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents:
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257 } |