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/*
* 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 file to build "scanner.c". */
/* This tests that we can use "yyextra".
We buffer all input into a growable array, then print it.
We run diff on the input and output.
*/
#include <stdio.h>
#include <stdlib.h>
#include "config.h"
/* We'll store the entire input in this buffer, growing as necessary. */
struct Check {
char foo;
char *bar;
char qux;
};
/* Save char into junk array at next position. */
static void check_extra ( yyscan_t scanner );
/* Special yyalloc */
void *yyalloc ( size_t size, yyscan_t scanner );
%}
%option 8bit prefix="test"
%option nounput nomain noyywrap nodefault noinput
%option warn
%option extra-type="struct Check *"
%option reentrant
%option noyyalloc
%%
.|\r|\n { check_extra (yyscanner); }
%%
int main(void);
int
main ()
{
yyscan_t scanner;
struct Check check;
check.foo = 'a';
check.bar = NULL;
check.qux = 'z';
testlex_init_extra(&check, &scanner);
testset_in(stdin, scanner);
testset_out(stdout, scanner);
/* Test to confirm that yyalloc was called from
* yylex_init_extra with the yyextra argument.
*/
check_extra(scanner);
testlex(scanner);
testlex_destroy(scanner);
return 0;
}
void *yyalloc(size_t size, yyscan_t scanner)
{
struct Check *check;
check = testget_extra(scanner);
if (!check->bar)
check->bar = "Hello World";
check_extra(scanner);
return malloc(size);
}
/* Save char into junk array at next position. */
static void check_extra(yyscan_t scanner)
{
struct Check *check;
check = testget_extra(scanner);
if (check->foo != 'a') {
fprintf(stderr, "foo is not 'a'\n");
exit(1);
}
if (strcmp(check->bar, "Hello World") != 0) {
fprintf(stderr, "bar is not Hello World\n");
exit(1);
}
if (check->qux != 'z') {
fprintf(stderr, "qux is not 'z'\n");
exit(1);
}
}
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