parser.y

来自「flex」· Y 代码 · 共 62 行

/*
 * This file is part of flex.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 
 * Neither the name of the University nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE.
 */

/* A dummy template parser to build "parser.c" and "parser.h".
   How to compile:
   bison --defines --output-file="parser.c" --name-prefix="test" parser.y
 */
%{
#include <stdio.h>
#include <stdlib.h>
#include "config.h"

#define YYERROR_VERBOSE 1       /* For debugging.   */
/* #define YYPARSE_PARAM scanner  */ /* For pure bison parser. */
/* #define YYLEX_PARAM   scanner  */ /* For reentrant flex. */


int yyerror(char* msg);
extern int testlex();

%}

%%

rule:  ;

%%

int yyerror(char* msg) {
    fprintf(stderr,"%s\n",msg);
    return 0;
}

/*
int
main ( int argc, char** argv )
{
    yyparse ();
    return 0;
}
*/