1/*
2 * This file is part of flex.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * Neither the name of the University nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE.
22 */
23
24%parse-param { void* scanner }
25%lex-param { void* scanner }
26
27/*
28   How to compile:
29   bison --defines --output-file="bison_yylloc_parser.c" --name-prefix="test" parser.y
30 */
31%{
32#include <stdio.h>
33#include <stdlib.h>
34#include <string.h>
35#include "config.h"
36#include "bison_yylloc_parser.h"
37#include "bison_yylloc_scanner.h"
38
39int yyerror(YYLTYPE *location, void* scanner, const char* msg);
40
41#define YYERROR_VERBOSE 1
42
43
44/* A dummy function. A check against seg-faults in yylval->str. */
45static int process_text(char* s) {
46    int total =0;
47    while(*s) {
48        total += (int) *s;
49        ++s;
50    }
51    return total;
52}
53
54
55%}
56
57%pure-parser
58
59%union  {
60    int  lineno;
61    char * str;
62}
63%token <str> IDENT
64%token <lineno> LINENO
65%token  EQUAL "="
66%token  COLON ":"
67%token  SPACE " "
68%%
69
70file:
71     line
72  |  file line
73  ;
74
75line:
76    LINENO COLON SPACE IDENT EQUAL IDENT
77    {
78        process_text($4);
79        process_text($6);
80        /* Check lineno. */
81        if( $1 != @1.first_line || $1 != testget_lineno(scanner))
82        {
83            yyerror(0, 0, "Parse failed: Line numbers do not match.");
84            YYABORT;
85        }
86
87        /* Recreate the line to stdout. */
88        printf ( "%04d: %s=%s\n", @1.first_line, $4, $6);
89    }
90    ;
91
92%%
93
94int yyerror(YYLTYPE *location, void* scanner, const char* msg) {
95    (void)location;
96    (void)scanner;
97    fprintf(stderr,"%s\n",msg);
98    return 0;
99}
100
101