99 lines
2.2 KiB
Text
99 lines
2.2 KiB
Text
|
/* $NetBSD: parser.y,v 1.1.1.1 2009/10/26 00:29:16 christos Exp $ */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
How to compile:
|
||
|
|
bison --defines --output-file="parser.c" --name-prefix="test" parser.y
|
||
|
|
*/
|
||
|
|
%{
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include "config.h"
|
||
|
|
|
||
|
|
#define YYERROR_VERBOSE 1
|
||
|
|
#define YYPARSE_PARAM scanner
|
||
|
|
#define YYLEX_PARAM scanner
|
||
|
|
|
||
|
|
int yyerror(char* msg);
|
||
|
|
extern int testget_lineno(void*);
|
||
|
|
|
||
|
|
|
||
|
|
/* A dummy function. A check against seg-faults in yylval->str. */
|
||
|
|
int process_text(char* s) {
|
||
|
|
int total =0;
|
||
|
|
while(*s) {
|
||
|
|
total += (int) *s;
|
||
|
|
++s;
|
||
|
|
}
|
||
|
|
return total;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
%}
|
||
|
|
|
||
|
|
%pure_parser
|
||
|
|
|
||
|
|
%union {
|
||
|
|
int lineno;
|
||
|
|
char * str;
|
||
|
|
}
|
||
|
|
%token <str> IDENT
|
||
|
|
%token <lineno> LINENO
|
||
|
|
%token EQUAL "="
|
||
|
|
%token COLON ":"
|
||
|
|
%token SPACE " "
|
||
|
|
%%
|
||
|
|
|
||
|
|
file:
|
||
|
|
line
|
||
|
|
| file line
|
||
|
|
;
|
||
|
|
|
||
|
|
line:
|
||
|
|
LINENO COLON SPACE IDENT EQUAL IDENT
|
||
|
|
{
|
||
|
|
process_text($4);
|
||
|
|
process_text($6);
|
||
|
|
/* Check lineno. */
|
||
|
|
if( $1 != @1.first_line || $1 != testget_lineno(scanner))
|
||
|
|
{
|
||
|
|
yyerror("Parse failed: Line numbers do not match.");
|
||
|
|
YYABORT;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Recreate the line to stdout. */
|
||
|
|
printf ( "%04d: %s=%s\n", @1.first_line, $4, $6);
|
||
|
|
}
|
||
|
|
;
|
||
|
|
|
||
|
|
%%
|
||
|
|
|
||
|
|
int yyerror(char* msg) {
|
||
|
|
fprintf(stderr,"%s\n",msg);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|