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/*
This file is part of Warzone 2100.
Copyright (C) 1999-2004 Eidos Interactive
Copyright (C) 2005-2020 Warzone 2100 Project
Warzone 2100 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 2 of the License, or
(at your option) any later version.
Warzone 2100 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 Warzone 2100; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
%{
/** @file
*
* Lexical analyser for resource (*.wrf) files
*/
#include "lib/framework/frame.h"
#include "lib/framework/resly.h"
/* Get the Yacc definitions */
#if defined (WZ_CC_MSVC)
#include "resource_parser.hpp"
#else
#include "resource_parser.h"
#endif
extern void res_error(const char* msg);
#include "lib/framework/lexer_input.h"
// fwrite declared with warn_unused_result, resulting in mysterious errors in "%%" on some distros.
static inline bool no_warn_unused_result(int ignore) { if (ignore) {} return true; }
#define fwrite(a, b, c, d) no_warn_unused_result(fwrite(a, b, c, d))
#ifndef yyextra
# define yyextra yyget_extra()
#endif
/* Older GNU Flex versions don't define yyget_extra(), yyset_extra(),
* yyget_text() and yyget_lineno().
* (and neither define a subminor version)
*/
#if !defined(YY_FLEX_SUBMINOR_VERSION) || (YY_FLEX_SUBMINOR_VERSION < 9)
# define yyget_extra res_get_extra
# define yyset_extra res_set_extra
//# define yyget_lineno res_get_lineno
//# define yyget_text res_get_text
extern void yyset_extra(YY_EXTRA_TYPE user_defined);
extern YY_EXTRA_TYPE yyget_extra(void);
extern int yyget_lineno(void);
/*int yyget_lineno()
{
return yylineno;
}*/
extern char* yyget_text(void);
/*char* yyget_text()
{
return yytext;
}*/
#elif defined(YY_FLEX_SUBMINOR_VERSION) && YY_FLEX_SUBMINOR_VERSION == 33
extern YY_EXTRA_TYPE yyget_extra(void);
extern int res_get_lineno(void);
extern FILE *res_get_in(void);
extern FILE *res_get_out(void);
extern int res_get_leng(void);
extern char *res_get_text(void);
extern void res_set_lineno(int line_number);
extern void res_set_in(FILE* in_str);
extern void res_set_out(FILE* out_str);
extern int res_get_debug(void);
extern void res_set_debug(int bdebug);
#endif
%}
%option yylineno noyywrap nounput never-interactive
%option prefix="res_"
%x COMMENT
%x QUOTE
%x SLCOMMENT
%%
/* Match to key words */
directory { return DIRECTORY; }
file { return FILETOKEN; }
/* Match text values */
[a-zA-Z][-0-9_a-zA-Z]* {
res_lval.sval = strdup(yytext);
return TEXT_T;
}
/* Match quoted text */
\"\" {
res_lval.sval = strdup("");
return QTEXT_T;
}
\" { BEGIN QUOTE; }
<QUOTE>\" { BEGIN 0; }
<QUOTE>\n { res_error("Unexpected end of line in string"); }
<QUOTE>[^\"\n]* {
res_lval.sval = strdup(yytext);
return QTEXT_T;
}
/* Skip white space */
[ \t\n\x0d\x0a] ;
/* Strip comments */
"/*" { BEGIN COMMENT; }
<COMMENT>"*/" |
<COMMENT>"*/"\n { BEGIN 0; }
<COMMENT>. |
<COMMENT>\n ;
/* Strip single line comments */
"//" { BEGIN SLCOMMENT; }
<SLCOMMENT>\n { BEGIN 0; }
<SLCOMMENT>[^\n]* ;
/* Match anything that's been missed and pass it as a char */
. return yytext[0];
%%
static YY_EXTRA_TYPE pBuffer = NULL;
void yyset_extra(YY_EXTRA_TYPE user_defined)
{
pBuffer = user_defined;
}
YY_EXTRA_TYPE yyget_extra()
{
return pBuffer;
}
/* Older GNU Flex versions don't define yylex_destroy()
* (and neither define a subminor version)
*/
#if !defined(YY_FLEX_SUBMINOR_VERSION) || (YY_FLEX_SUBMINOR_VERSION < 9)
int res_lex_destroy(void)
{
/* For non-reentrant C scanner only. */
yy_delete_buffer(YY_CURRENT_BUFFER);
yy_init = 1;
return 0;
}
#endif
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