view release on metacpan or  search on metacpan

libjit/tools/gen-rules-scanner.l  view on Meta::CPAN

 * <http://www.gnu.org/licenses/>.
 */

#include "gen-rules-parser.h"
#include <config.h>
#include <stdio.h>
#ifdef HAVE_STDLIB_H
# include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#elif defined(HAVE_STRINGS_H)
# include <strings.h>
#endif

#ifndef HAVE_UNISTD_H
# define YY_NO_UNISTD_H
#endif

extern YYSTYPE yylval;

/*
 * Current file and line number.
 */
char *gensel_filename = "";
long gensel_linenum = 1;

/*
 * Return a token code from the lexical analyser.
 */
#define	RETURNTOK(x)		return (x)

/*
 * Forward declarations.
 */
static void gensel_skip_comment(void);
static char *gensel_read_block(void);
static char *gensel_read_literal(void);

/*
 * Duplicate a string.
 */
static char *gensel_strdup(const char *str)
{
	char *new_str;
	if(!str)
	{
		return 0;
	}
	new_str = (char *)malloc(strlen(str) + 1);
	if(!new_str)
	{
		return 0;
	}
	strcpy(new_str, str);
	return new_str;
}

%}

%option outfile="lex.yy.c"
%option noyywrap
%option nounput

DIGIT			[0-9]
IDALPHA			[a-zA-Z_]
WHITE			[ \t\v\r\f]

%%

"->"			{ RETURNTOK(K_PTR); }
"any"			{ RETURNTOK(K_ANY); }
"all"			{ RETURNTOK(K_ALL); }
"imm"			{ RETURNTOK(K_IMM); }
"immzero"		{ RETURNTOK(K_IMMZERO); }
"imms8"			{ RETURNTOK(K_IMMS8); }
"immu8"			{ RETURNTOK(K_IMMU8); }
"imms16"		{ RETURNTOK(K_IMMS16); }
"immu16"		{ RETURNTOK(K_IMMU16); }
"imms32"		{ RETURNTOK(K_IMMS32); }
"immu32"		{ RETURNTOK(K_IMMU32); }
"local"			{ RETURNTOK(K_LOCAL); }
"frame"			{ RETURNTOK(K_FRAME); }
"ternary"		{ RETURNTOK(K_TERNARY); }
"branch"		{ RETURNTOK(K_BRANCH); }
"note"			{ RETURNTOK(K_NOTE); }
"copy"			{ RETURNTOK(K_COPY); }
"commutative"		{ RETURNTOK(K_COMMUTATIVE); }
"if"			{ RETURNTOK(K_IF); }
"clobber"		{ RETURNTOK(K_CLOBBER); }
"scratch"		{ RETURNTOK(K_SCRATCH); }
"space"			{ RETURNTOK(K_SPACE); }
"stack"			{ RETURNTOK(K_STACK); }
"x87_arith"		{ RETURNTOK(K_X87_ARITH); }
"x87_arith_reversible"	{ RETURNTOK(K_X87_ARITH_REVERSIBLE); }
"%inst_type"		{ RETURNTOK(K_INST_TYPE); }
"%regclass"		{ RETURNTOK(K_REG_CLASS); }
"%lregclass"		{ RETURNTOK(K_LREG_CLASS); }

"manual"		{ RETURNTOK(K_MANUAL); }
"more_space"		{ RETURNTOK(K_MORE_SPACE); }

"!"?{IDALPHA}({DIGIT}|{IDALPHA})*	{
			yylval.name = gensel_strdup(yytext);
			if(!(yylval.name))
			{
				exit(1);
			}
			RETURNTOK(IDENTIFIER);
		}

{WHITE}+		;

\n			{ ++gensel_linenum; }

\"			{ yylval.name = gensel_read_literal();
			  RETURNTOK(LITERAL); }

"{"			{ yylval.code.filename = gensel_filename;
			  yylval.code.linenum = gensel_linenum;
			  yylval.code.block = gensel_read_block();