3 * File name: ir/adt/eset.c
4 * Purpose: Datentyp: Vereinfachte Map (hash-map) zum Speichern von
5 * Zeigern/Adressen -> Zeigern/Adressen.
6 * Author: Hubert Schmid
10 * Copyright: (c) 2002 Universität Karlsruhe
11 * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
22 int dummy; /* dummy entry */
26 #define INITIAL_SLOTS 64
29 static int pmap_entry_cmp(const void *p1, const void *p2, size_t size) {
30 const pmap_entry *entry1 = p1;
31 const pmap_entry *entry2 = p2;
33 return entry1->key != entry2->key;
37 pmap *pmap_create(void) {
38 return (pmap *)new_set(pmap_entry_cmp, INITIAL_SLOTS);
42 void pmap_destroy(pmap *map) {
47 void pmap_insert(pmap *map, void *key, void *value) {
48 if (pmap_contains(map, key)) {
49 pmap_entry * entry = pmap_find(map, key);
55 set_insert((set *)map, &entry, sizeof(pmap_entry), HASH_PTR(key));
60 int pmap_contains(pmap *map, void *key) {
61 return set_find((set *)map, &key, sizeof(pmap_entry), HASH_PTR(key)) != NULL;
65 pmap_entry * pmap_find(pmap *map, void *key) {
66 return (pmap_entry *)set_find((set *)map, &key, sizeof(pmap_entry), HASH_PTR(key));
70 void * pmap_get(pmap *map, void *key) {
71 pmap_entry * entry = pmap_find(map, key);
72 return entry == NULL ? NULL : entry->value;
76 pmap_entry *pmap_first(pmap *map) {
77 return (pmap_entry *) set_first((set *)map);
81 pmap_entry *pmap_next(pmap *map) {
82 return (pmap_entry *) set_next((set *)map);
86 void pmap_break(pmap *map) {
87 set_break((set *)map);