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/*
* Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* 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.
*
* 3. Neither the name of the Institute 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 BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "gen_locl.h"
#include "lex.h"
static Hashtab *htab;
static int
cmp(void *a, void *b)
{
Symbol *s1 = (Symbol *) a;
Symbol *s2 = (Symbol *) b;
return strcmp(s1->name, s2->name);
}
static unsigned
hash(void *a)
{
Symbol *s = (Symbol *) a;
return hashjpw(s->name);
}
void
initsym(void)
{
htab = hashtabnew(101, cmp, hash);
}
void
output_name(char *s)
{
char *p;
for (p = s; *p; ++p)
if (*p == '-' || *p == '.')
*p = '_';
}
Symbol *
addsym(char *name)
{
Symbol key, *s;
key.name = name;
s = (Symbol *) hashtabsearch(htab, (void *) &key);
if (s == NULL) {
s = (Symbol *) emalloc(sizeof(*s));
s->name = name;
s->gen_name = estrdup(name);
output_name(s->gen_name);
s->stype = SUndefined;
hashtabadd(htab, s);
}
return s;
}
static int
checkfunc(void *ptr, void *arg)
{
Symbol *s = ptr;
if (s->stype == SUndefined) {
lex_error_message("%s is still undefined\n", s->name);
*(int *) arg = 1;
}
return 0;
}
int
checkundefined(void)
{
int f = 0;
hashtabforeach(htab, checkfunc, &f);
return f;
}
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