Mercurial > octave-nkf
view libinterp/corefcn/oct-tex-lexer.ll @ 17320:ea23eb07f8ed
Add missing TeX symbols and fix few others (bug #39828).
* libinterp/corefcn/oct-tex-lexer.ll (ID): Allow digit characters.
* libinterp/corefcn/txt-eng.cc (symbol_names): Add "angle", "ast",
"sim", "Leftarrow" and "Rightarrow".
(symbol_codes): Likewise. Fix unicode values for symbols "langle" and
"rangle".
author | Michael Goffioul <michael.goffioul@gmail.com> |
---|---|
date | Fri, 23 Aug 2013 11:47:04 -0400 |
parents | 8ce6cdd272eb |
children |
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/* Copyright (C) 2013 Michael Goffioul This file is part of Octave. Octave is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Octave is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Octave; see the file COPYING. If not, see <http://www.gnu.org/licenses/>. */ %option prefix = "octave_tex_" %option noyywrap %option reentrant %option bison-bridge %top { #ifdef HAVE_CONFIG_H #include <config.h> #endif #include "txt-eng.h" #include "oct-tex-parser.h" } %x NUM_MODE %x MAYBE_NUM_MODE %x COMMAND D [0-9] ID [a-zA-Z0-9] NUM (({D}+\.?{D}*)|(\.{D}+)) %% %{ // Numeric values %} <NUM_MODE>{NUM} { int nread; nread = sscanf (yytext, "%lf", &(yylval->num)); if (nread == 1) return NUM; } <NUM_MODE>[ \t]+ { } <NUM_MODE>"\n"|. { yyless (0); BEGIN (INITIAL); } <MAYBE_NUM_MODE>"{" { BEGIN (NUM_MODE); return START; } <MAYBE_NUM_MODE>"\n"|. { yyless (0); BEGIN (INITIAL); } %{ // Simple commands %} "\\bf" { return BF; } "\\it" { return IT; } "\\sl" { return SL; } "\\rm" { return RM; } %{ // Generic font commands %} "\\fontname" { return FONTNAME; } "\\fontsize" { BEGIN (MAYBE_NUM_MODE); return FONTSIZE; } "\\color[rgb]" { BEGIN (MAYBE_NUM_MODE); return COLOR_RGB; } "\\color" { return COLOR; } %{ // Special characters %} "{" { return START; } "}" { return END; } "^" { return SUPER; } "_" { return SUB; } "\\{" | "\\}" | "\\^" | "\\_" | "\\\\" { yylval->ch = yytext[1]; return CH; } %{ // Symbols %} "\\" { BEGIN(COMMAND); return CMD; } <COMMAND>{ID} { yylval->ch = yytext[0]; return ID; } <COMMAND>"\n"|. { BEGIN(INITIAL); yyless (0); } %{ // Generic character %} "\n" | . { yylval->ch = yytext[0]; return CH; } %% bool text_parser_tex::init_lexer (const std::string& s) { if (! scanner) octave_tex_lex_init (&scanner); if (scanner) { if (buffer_state) { octave_tex__delete_buffer (reinterpret_cast<YY_BUFFER_STATE> (buffer_state), scanner); buffer_state = 0; } buffer_state = octave_tex__scan_bytes (s.data (), s.length (), scanner); } return (scanner && buffer_state); } void text_parser_tex::destroy_lexer (void) { if (buffer_state) { octave_tex__delete_buffer (reinterpret_cast<YY_BUFFER_STATE> (buffer_state), scanner); buffer_state = 0; } if (scanner) { octave_tex_lex_destroy (scanner); scanner = 0; } }