scummvm/engines/private/lexer.l

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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
%option noyywrap
%option noinput
%option nounput
%option never-interactive
%option outfile="engines/private/lexer.cpp"
%option prefix="PRIVATE_"
%{
#define YY_NO_UNISTD_H
#define FORBIDDEN_SYMBOL_EXCEPTION_FILE
#define FORBIDDEN_SYMBOL_EXCEPTION_fprintf
#define FORBIDDEN_SYMBOL_EXCEPTION_fwrite
#define FORBIDDEN_SYMBOL_EXCEPTION_fread
#define FORBIDDEN_SYMBOL_EXCEPTION_stdin
#define FORBIDDEN_SYMBOL_EXCEPTION_stdout
#define FORBIDDEN_SYMBOL_EXCEPTION_stderr
#define FORBIDDEN_SYMBOL_EXCEPTION_exit
#define FORBIDDEN_SYMBOL_EXCEPTION_getc
#include "private/private.h"
#include "private/grammar.h"
#include "private/tokens.h"
using namespace Private;
using namespace Gen;
using namespace Settings;
%}
%%
\/\/.* /* ignoring the comment */
\<= return LTE;
\>= return GTE;
!= return NEQ;
== return EQ;
debug return DEBUGTOK;
define return DEFINETOK;
setting return SETTINGTOK;
EmitCodeOff return EMITCODEOFFTOK;
EmitCodeOn return EMITCODEONTOK;
ResetIDCounter return RESETIDTOK;
if return IFTOK;
else return ELSETOK;
goto return GOTOTOK;
RECT return RECT;
FALSE return FALSETOK;
TRUE return TRUETOK;
NULL return NULLTOK;
Random return RANDOMTOK;
[A-Za-z_][A-Za-z_0-9]* PRIVATE_lval.s = scumm_strdup(PRIVATE_text); return NAME;
[\-]?[0-9]+ PRIVATE_lval.sym = g_private->maps.constant(NUM, atoi(PRIVATE_text), NULL); return NUM;
\"[^\"\r\n]*\" PRIVATE_lval.sym = g_private->maps.constant(STRING, 0, scumm_strdup(PRIVATE_text)); return STRING;
[\r|\n]+ /* ignore return */;
[ \t]+ /* ignore whitespace */;
. return *yytext;
%%
namespace Private {
int parse(const char *code) {
g_setts->init();
YY_BUFFER_STATE bp;
yy_delete_buffer(YY_CURRENT_BUFFER);
bp = yy_scan_string(code);
yy_switch_to_buffer(bp);
PRIVATE_parse();
yy_delete_buffer(bp);
return 0;
}
} // End of namespace Private