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annotate libinterp/corefcn/oct-tex-parser.yy @ 19627:446c46af4b42 stable

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strip trailing whitespace from most source files * Makefile.am, NEWS, build-aux/common.mk, configure.ac, doc/Makefile.am, doc/doxyhtml/Makefile.am, doc/interpreter/Makefile.am, doc/interpreter/arith.txi, doc/interpreter/audio.txi, doc/interpreter/basics.txi, doc/interpreter/bugs.txi, doc/interpreter/container.txi, doc/interpreter/cp-idx.txi, doc/interpreter/data.txi, doc/interpreter/debug.txi, doc/interpreter/diagperm.txi, doc/interpreter/diffeq.txi, doc/interpreter/doccheck/README, doc/interpreter/doccheck/spellcheck, doc/interpreter/emacs.txi, doc/interpreter/errors.txi, doc/interpreter/eval.txi, doc/interpreter/expr.txi, doc/interpreter/external.txi, doc/interpreter/fn-idx.txi, doc/interpreter/func.txi, doc/interpreter/geometry.txi, doc/interpreter/geometryimages.m, doc/interpreter/gpl.txi, doc/interpreter/grammar.txi, doc/interpreter/gui.txi, doc/interpreter/image.txi, doc/interpreter/install.txi, doc/interpreter/interp.txi, doc/interpreter/interpimages.m, 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scripts/statistics/distributions/unifrnd.m, scripts/statistics/distributions/wblrnd.m, scripts/statistics/models/module.mk, scripts/statistics/tests/kruskal_wallis_test.m, scripts/strings/base2dec.m, scripts/strings/deblank.m, scripts/strings/dec2base.m, scripts/strings/dec2bin.m, scripts/strings/dec2hex.m, scripts/strings/mat2str.m, scripts/strings/ostrsplit.m, scripts/strings/regexptranslate.m, scripts/strings/str2num.m, scripts/strings/strcat.m, scripts/strings/strjoin.m, scripts/strings/strsplit.m, scripts/strings/strtok.m, scripts/strings/strtrim.m, scripts/strings/strtrunc.m, scripts/strings/substr.m, scripts/testfun/__run_test_suite__.m, scripts/testfun/speed.m, scripts/testfun/test.m, scripts/time/asctime.m, scripts/time/datenum.m, scripts/time/datevec.m, scripts/time/weekday.m, src/Makefile.am, test/Makefile.am, test/build-bc-overload-tests.sh, test/build-sparse-tests.sh, test/jit.tst, test/line-continue.tst: Strip trailing whitespace.
author John W. Eaton <jwe@octave.org>
date Tue, 20 Jan 2015 08:26:57 -0500
parents bdbf91c0a1a4
children 4197fc428c7d
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1 /*
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2
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3 Copyright (C) 2013 Michael Goffioul
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Michael Goffioul <michael.goffioul@gmail.com>
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4
5b088598df1d Add simple TeX parser based on flex/bison.
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5 This file is part of Octave.
5b088598df1d Add simple TeX parser based on flex/bison.
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6
5b088598df1d Add simple TeX parser based on flex/bison.
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7 Octave is free software; you can redistribute it and/or modify it
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
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8 under the terms of the GNU General Public License as published by the
5b088598df1d Add simple TeX parser based on flex/bison.
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9 Free Software Foundation; either version 3 of the License, or (at your
5b088598df1d Add simple TeX parser based on flex/bison.
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10 option) any later version.
5b088598df1d Add simple TeX parser based on flex/bison.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
5b088598df1d Add simple TeX parser based on flex/bison.
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
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15 for more details.
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16
5b088598df1d Add simple TeX parser based on flex/bison.
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17 You should have received a copy of the GNU General Public License
5b088598df1d Add simple TeX parser based on flex/bison.
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18 along with Octave; see the file COPYING. If not, see
5b088598df1d Add simple TeX parser based on flex/bison.
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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
5b088598df1d Add simple TeX parser based on flex/bison.
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23 %{
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24 #define YYDEBUG 1
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25
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26 #ifdef HAVE_CONFIG_H
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27 #include <config.h>
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28 #endif
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29
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30 #include "txt-eng.h"
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31 #include "oct-tex-parser.h"
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32
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33 extern int octave_tex_lex (YYSTYPE *, void *);
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34 static void yyerror (text_parser_tex& parser, const char *s);
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35
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36 #if defined (GNULIB_NAMESPACE)
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37 // Calls to the following functions appear in the generated output from
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38 // Bison without the namespace tag. Redefine them so we will use them
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39 // via the gnulib namespace.
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40 #define fclose GNULIB_NAMESPACE::fclose
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41 #define fprintf GNULIB_NAMESPACE::fprintf
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42 #define malloc GNULIB_NAMESPACE::malloc
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43 #endif
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44
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45 #define scanner parser.get_scanner ()
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46 %}
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47
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48 %name-prefix="octave_tex_"
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49 %define api.pure
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50 %parse-param { text_parser_tex& parser }
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51 %lex-param { void *scanner }
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52
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53 %code requires {#include <string>}
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54
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55 %union {
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56 /* Leaf symbols produced by the scanner */
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57 char ch;
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58 double num;
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59 int sym;
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60
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61 /* Used for string buffering */
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62 std::string* str;
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63
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64 /* Objects produced by the parser */
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65 text_element* e_base;
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66 text_element_list* e_list;
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67 }
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68
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69 %token BF IT SL RM
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70 %token FONTNAME FONTSIZE
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71 %token COLOR COLOR_RGB
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72 %token START END SUPER SUB
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73 %token<ch> CH
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74 %token<num> NUM
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75 %token<sym> SYM
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76
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77 %type<str> simple_string
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78 %type<e_base> string_element symbol_element
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79 %type<e_base> superscript_element subscript_element combined_script_element
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80 %type<e_base> font_modifier_element fontname_element fontsize_element color_element
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81 %type<e_list> string_element_list scoped_string_element_list
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82
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83 /* Make sure there's no memory leak on parse error. */
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84 %destructor { } <ch> <num> <sym>
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85 %destructor { delete $$; } <*>
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86
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87 %nonassoc SCRIPT
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88 %nonassoc SUB SUPER
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89
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90 %nonassoc STR
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91 %nonassoc CH
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92
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93 %start string
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94
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95 %%
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96
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97 simple_string : CH
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98 { $$ = new std::string (1, $1); }
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99 | simple_string CH
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100 { $1->append (1, $2); $$ = $1; }
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101 ;
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102
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103 symbol_element : SYM
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104 { $$ = new text_element_symbol ($1); }
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105 ;
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106
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107 font_modifier_element : BF
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108 { $$ = new text_element_fontstyle (text_element_fontstyle::bold); }
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109 | IT
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110 { $$ = new text_element_fontstyle (text_element_fontstyle::italic); }
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111 | SL
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112 { $$ = new text_element_fontstyle (text_element_fontstyle::oblique); }
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113 | RM
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114 { $$ = new text_element_fontstyle (text_element_fontstyle::normal); }
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115 ;
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116
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117 fontsize_element : FONTSIZE START NUM END
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118 { $$ = new text_element_fontsize ($3); }
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119 ;
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120
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121 fontname_element : FONTNAME START simple_string END
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122 {
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123 $$ = new text_element_fontname (*$3);
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124 delete $3;
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125 }
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126 ;
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127
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128 color_element : COLOR START simple_string END
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129 {
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130 $$ = new text_element_color (*$3);
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131 delete $3;
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132 }
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133 | COLOR_RGB START NUM NUM NUM END
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134 {
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135 $$ = new text_element_color ($3, $4, $5);
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136 }
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137 ;
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138
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139 string_element : simple_string %prec STR
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140 {
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141 $$ = new text_element_string (*$1);
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142 delete $1;
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143 }
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144 | scoped_string_element_list
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145 /* This is just to avoid a warning in bison. */
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146 { $$ = $1; }
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147 | symbol_element
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148 | font_modifier_element
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149 | fontsize_element
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150 | fontname_element
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151 | color_element
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152 | superscript_element %prec SCRIPT
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153 | subscript_element %prec SCRIPT
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154 | combined_script_element
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155 ;
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156
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157 superscript_element : SUPER CH
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158 { $$ = new text_element_superscript ($2); }
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159 | SUPER scoped_string_element_list
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160 { $$ = new text_element_superscript ($2); }
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161 | SUPER symbol_element
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162 { $$ = new text_element_superscript ($2); }
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163 ;
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164
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165 subscript_element : SUB CH
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166 { $$ = new text_element_subscript ($2); }
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167 | SUB scoped_string_element_list
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168 { $$ = new text_element_subscript ($2); }
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169 | SUB symbol_element
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170 { $$ = new text_element_subscript ($2); }
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171 ;
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172
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173 combined_script_element : subscript_element superscript_element
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174 { $$ = new text_element_combined ($1, $2); }
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175 | superscript_element subscript_element
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176 { $$ = new text_element_combined ($1, $2); }
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177 ;
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178
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179 string_element_list : string_element
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180 { $$ = new text_element_list ($1); }
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181 | string_element_list string_element
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182 { $1->push_back ($2); $$ = $1; }
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183 ;
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184
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185 scoped_string_element_list : START string_element_list END
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186 { $$ = $2; }
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187 | START END
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188 { $$ = new text_element_list (); }
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189 ;
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190
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191 string : /* empty */
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192 { parser.set_parse_result (new text_element_string ("")); }
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193 | string_element_list
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194 { parser.set_parse_result ($1); }
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195 ;
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196
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197 %%
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198
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199 text_element*
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200 text_parser_tex::parse (const std::string& s)
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201 {
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202 octave_tex_debug = 0;
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203
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204 if (init_lexer (s))
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205 {
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206 result = 0;
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207
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208 if (octave_tex_parse (*this) == 0)
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209 return result;
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210 }
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211
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212 return new text_element_string (s);
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213 }
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214
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215 static void
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216 yyerror (text_parser_tex&, const char *s)
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217 {
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218 fprintf (stderr, "TeX parse error: %s\n", s);
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219 }