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98 lines
2.7 KiB
98 lines
2.7 KiB
/*
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* This file is part of the program ltl2dstar (http://www.ltl2dstar.de/).
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* Copyright (C) 2005-2007 Joachim Klein <j.klein@ltl2dstar.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* This is an input file for the lexer generator flex.
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The parser can parse NBAs in LBTT format. */
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%{
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#include <cstring>
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#include <string>
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#include "nba-parser-lbtt.tab.hpp"
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#include <boost/lexical_cast.hpp>
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#include "common/Exceptions.hpp"
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namespace nba_parser_lbtt {
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extern int line_number;
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};
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using namespace nba_parser_lbtt;
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#if (__WIN32__ || _WIN32)
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// define YY_NO_UNISTD so that flex doesn't attempt
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// to include <unistd.h>, which doesn't exists on Windows.
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#define YY_NO_UNISTD_H 1
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#endif
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%}
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%option never-interactive
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%option noyywrap
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%option nounput
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%option prefix="lbtt_"
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%%
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[ \t] { /* skip whitespace */ }
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\n|"\x0d\x0a"|"\x0a"|"\x0d" {
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/* skip newline */
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line_number++;
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}
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"-1" {
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return LBTT_STOP;
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}
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[0-9]+ {
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lbtt_lval.i=boost::lexical_cast<unsigned int>(yytext);
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return LBTT_INT;
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}
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"p"[0-9]+ {
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lbtt_lval.str = new std::string(yytext);
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return LBTT_AP;
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}
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t {
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return LBTT_TRUE;
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}
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f {
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return LBTT_FALSE;
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}
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"|" {
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return LBTT_OR;
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}
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"&" {
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return LBTT_AND;
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}
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"!" {
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return LBTT_NOT;
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}
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<*>.|\n { // Default rule
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THROW_EXCEPTION(Exception,
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"Lexer error: Unknown character '"+
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std::string(yytext)+
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"'");
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}
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%%
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