ydr/symbol.c

   1 /*
   2  * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifdef HAVE_CONFIG_H
  35 #include <config.h>
  36 RCSID("$Id$");
  37 #endif
  38
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42 #include "sym.h"
  43 #include <hash.h>
  44 #include <roken.h>
  45
  46 static Hashtab *hashtab;
  47
  48 static int
  49 symcmp (void *a, void *b)
  50 {
  51      Symbol *sa = (Symbol *)a;
  52      Symbol *sb = (Symbol *)b;
  53
  54      return strcmp (sa->name, sb->name);
  55 }
  56
  57 static unsigned
  58 symhash (void *a)
  59 {
  60      Symbol *sa = (Symbol *)a;
  61
  62      return hashadd (sa->name);
  63 }
  64
  65 #define HASHTABSIZE 149
  66
  67 void
  68 initsym (void)
  69 {
  70      hashtab = hashtabnew (HASHTABSIZE, symcmp, symhash);
  71 }
  72
  73 Symbol *
  74 addsym (char *name)
  75 {
  76      Symbol tmp;
  77      Symbol *sym;
  78
  79      tmp.name = name;
  80      sym = (Symbol *)hashtabsearch (hashtab, (void *)&tmp);
  81      if (sym == NULL) {
  82           sym = (Symbol *)emalloc (sizeof (Symbol));
  83           sym->name = name;
  84           sym->type = YDR_TUNDEFINED;
  85           sym->attrs = NULL;
  86           hashtabadd (hashtab, sym);
  87      }
  88      return sym;
  89 }
  90
  91 Symbol *
  92 findsym (char *name)
  93 {
  94      Symbol tmp;
  95
  96      tmp.name = name;
  97      return (Symbol *)hashtabsearch (hashtab, (void *)&tmp);
  98 }
  99
 100 static Bool __attribute__ ((unused))
 101 printsymbol (void *ptr, void *arg)
 102 {
 103      Symbol *s = (Symbol *)ptr;
 104
 105      switch (s->type) {
 106           case YDR_TUNDEFINED :
 107                printf ("undefined ");
 108                break;
 109           case YDR_TSTRUCT :
 110                printf ("struct ");
 111                break;
 112           case YDR_TENUM :
 113                printf ("enum ");
 114                break;
 115           case YDR_TENUMVAL :
 116                printf ("enumval ");
 117                break;
 118           case YDR_TCONST :
 119                printf ("const ");
 120                break;
 121           case YDR_TTYPEDEF :
 122                printf ("typedef ");
 123                break;
 124           default :
 125                abort ();
 126      }
 127      puts (s->name);
 128
 129      return FALSE;
 130 }
 131
 132 void
 133 symiterate (Bool (*func)(void *, void *), void *arg)
 134 {
 135      hashtabforeach (hashtab, func, arg);
 136 }