91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
/*
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* Copyright (c) 1997 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "gen_locl.h"
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RCSID("$Id: symbol.c,v 1.8 1999/12/02 17:05:02 joda Exp $");
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static Hashtab *htab;
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static int
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cmp (void *a, void *b)
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{
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Symbol *s1 = (Symbol *)a;
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Symbol *s2 = (Symbol *)b;
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return strcmp (s1->name, s2->name);
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}
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static unsigned
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hash (void *a)
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{
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Symbol *s = (Symbol *)a;
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return hashjpw (s->name);
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}
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void
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initsym ()
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{
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htab = hashtabnew (101, cmp, hash);
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}
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void
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output_name (char *s)
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{
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char *p;
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for (p = s; *p; ++p)
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if (*p == '-')
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*p = '_';
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}
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Symbol*
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addsym (char *name)
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{
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Symbol key, *s;
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key.name = name;
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s = (Symbol *)hashtabsearch (htab, (void *)&key);
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if (s == NULL) {
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s = (Symbol *)malloc (sizeof (*s));
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s->name = name;
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s->gen_name = strdup(name);
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output_name (s->gen_name);
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s->stype = SUndefined;
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hashtabadd (htab, s);
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}
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return s;
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}
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