1 /* 2 * Copyright (c) 1997 - 2001 Kungliga Tekniska H�gskolan 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 #include "gen_locl.h" 35 36 RCSID("$Id: symbol.c,v 1.9 2001/09/25 13:39:27 assar Exp $"); 37 38 static Hashtab *htab; 39 40 static int 41 cmp (void *a, void *b) 42 { 43 Symbol *s1 = (Symbol *)a; 44 Symbol *s2 = (Symbol *)b; 45 46 return strcmp (s1->name, s2->name); 47 } 48 49 static unsigned 50 hash (void *a) 51 { 52 Symbol *s = (Symbol *)a; 53 54 return hashjpw (s->name); 55 } 56 57 void 58 initsym (void) 59 { 60 htab = hashtabnew (101, cmp, hash); 61 } 62 63 64 void 65 output_name (char *s) 66 { 67 char *p; 68 69 for (p = s; *p; ++p) 70 if (*p == '-') 71 *p = '_'; 72 } 73 74 Symbol* 75 addsym (char *name) 76 { 77 Symbol key, *s; 78 79 key.name = name; 80 s = (Symbol *)hashtabsearch (htab, (void *)&key); 81 if (s == NULL) { 82 s = (Symbol *)malloc (sizeof (*s)); 83 s->name = name; 84 s->gen_name = strdup(name); 85 output_name (s->gen_name); 86 s->stype = SUndefined; 87 hashtabadd (htab, s); 88 } 89 return s; 90 } 91