155 lines
3.7 KiB
Plaintext
155 lines
3.7 KiB
Plaintext
/*
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This file is part of Warzone 2100.
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Copyright (C) 1999-2004 Eidos Interactive
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Copyright (C) 2005-2009 Warzone Resurrection Project
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Warzone 2100 is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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Warzone 2100 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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You should have received a copy of the GNU General Public License
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along with Warzone 2100; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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%{
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/** @file
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*
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* Lexical analyser for resource (*.wrf) files
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*/
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#include "lib/framework/frame.h"
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#include "lib/framework/resly.h"
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/* Get the Yacc definitions */
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#include "resource_parser.tab.h"
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extern void res_error(const char* msg);
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#include "lib/framework/lexer_input.h"
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#ifndef yyextra
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# define yyextra yyget_extra()
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#endif
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/* Older GNU Flex versions don't define yyget_extra(), yyset_extra(),
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* yyget_text() and yyget_lineno().
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* (and neither define a subminor version)
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*/
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#if !defined(YY_FLEX_SUBMINOR_VERSION) || (YY_FLEX_SUBMINOR_VERSION < 9)
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# define yyget_extra res_get_extra
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# define yyset_extra res_set_extra
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# define yyget_lineno res_get_lineno
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# define yyget_text res_get_text
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extern void yyset_extra(YY_EXTRA_TYPE user_defined);
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extern YY_EXTRA_TYPE yyget_extra(void);
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extern int yyget_lineno(void);
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int yyget_lineno()
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{
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return yylineno;
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}
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extern char* yyget_text(void);
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char* yyget_text()
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{
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return yytext;
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}
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#elif defined(YY_FLEX_SUBMINOR_VERSION) && YY_FLEX_SUBMINOR_VERSION == 33
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extern YY_EXTRA_TYPE yyget_extra(void);
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extern int res_get_lineno(void);
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extern FILE *res_get_in(void);
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extern FILE *res_get_out(void);
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extern int res_get_leng(void);
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extern char *res_get_text(void);
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extern void res_set_lineno(int line_number);
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extern void res_set_in(FILE* in_str);
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extern void res_set_out(FILE* out_str);
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extern int res_get_debug(void);
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extern void res_set_debug(int bdebug);
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#endif
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%}
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%option yylineno noyywrap nounput
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%option prefix="res_"
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%x COMMENT
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%x QUOTE
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%x SLCOMMENT
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%%
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/* Match to key words */
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database { return DATABASE; }
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directory { return DIRECTORY; }
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file { return FILETOKEN; }
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table { return TABLE; }
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/* Match text values */
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[a-zA-Z][-0-9_a-zA-Z]* {
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res_lval.sval = strdup(yytext);
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return TEXT_T;
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}
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/* Match quoted text */
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\"\" {
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res_lval.sval = strdup("");
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return QTEXT_T;
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}
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\" { BEGIN QUOTE; }
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<QUOTE>\" { BEGIN 0; }
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<QUOTE>\n { res_error("Unexpected end of line in string"); }
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<QUOTE>[^\"\n]* {
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res_lval.sval = strdup(yytext);
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return QTEXT_T;
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}
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/* Skip white space */
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[ \t\n\x0d\x0a] ;
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/* Strip comments */
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"/*" { BEGIN COMMENT; }
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<COMMENT>"*/" |
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<COMMENT>"*/"\n { BEGIN 0; }
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<COMMENT>. |
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<COMMENT>\n ;
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/* Strip single line comments */
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"//" { BEGIN SLCOMMENT; }
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<SLCOMMENT>\n { BEGIN 0; }
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<SLCOMMENT>[^\n]* ;
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/* Match anything that's been missed and pass it as a char */
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. return yytext[0];
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%%
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static YY_EXTRA_TYPE pBuffer = NULL;
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void yyset_extra(YY_EXTRA_TYPE user_defined)
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{
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pBuffer = user_defined;
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}
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YY_EXTRA_TYPE yyget_extra()
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{
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return pBuffer;
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}
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/* Older GNU Flex versions don't define yylex_destroy()
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* (and neither define a subminor version)
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*/
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#if !defined(YY_FLEX_SUBMINOR_VERSION) || (YY_FLEX_SUBMINOR_VERSION < 9)
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int res_lex_destroy(void)
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{
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/* For non-reentrant C scanner only. */
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yy_delete_buffer(YY_CURRENT_BUFFER);
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yy_init = 1;
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}
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#endif
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