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/*
* Copyright (c) 1997 - 2001 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"
/*
RCSID("$KTH: symbol.c,v 1.9 2001/09/25 13:39:27 assar Exp $");
*/
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 = '_';
}
Symbol*
addsym (char *name)
{
Symbol key, *s;
key.name = name;
s = (Symbol *)hashtabsearch (htab, (void *)&key);
if (s == NULL) {
s = (Symbol *)malloc (sizeof (*s));
if (s == NULL)
err(1, NULL);
s->name = name;
if ((s->gen_name = strdup(name)) == NULL)
err(1, NULL);
output_name (s->gen_name);
s->stype = SUndefined;
hashtabadd (htab, s);
}
return s;
}
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