/*
* Project: libFIRM
- * File name: ir/adt/eset.c
+ * File name: ir/adt/pmap.c
* Purpose: Datentyp: Vereinfachte Map (hash-map) zum Speichern von
* Zeigern/Adressen -> Zeigern/Adressen.
* Author: Hubert Schmid
#define INITIAL_SLOTS 64
+/** map a pmap into a set */
+#define M2S(map) (set *)(map)
+/**
+ * compare the keys of two entry pairs
+ */
static int pmap_entry_cmp(const void *p1, const void *p2, size_t size) {
const pmap_entry *entry1 = p1;
const pmap_entry *entry2 = p2;
return entry1->key != entry2->key;
}
+/* Creates a new empty map with an initial number of slots. */
+pmap *pmap_create_ex(int slots) {
+ return (pmap *)new_set(pmap_entry_cmp, slots);
+}
pmap *pmap_create(void) {
- return (pmap *)new_set(pmap_entry_cmp, INITIAL_SLOTS);
+ return pmap_create_ex(INITIAL_SLOTS);
}
-
void pmap_destroy(pmap *map) {
- del_set((set *)map);
+ del_set(M2S(map));
}
void pmap_insert(pmap *map, void *key, void *value) {
- if (pmap_contains(map, key)) {
- pmap_entry * entry = pmap_find(map, key);
- entry->value = value;
- } else {
- pmap_entry entry;
- entry.key = key;
- entry.value = value;
- set_insert((set *)map, &entry, sizeof(pmap_entry), HASH_PTR(key));
- }
+ pmap_entry entry, *p;
+
+ entry.key = key;
+ p = set_insert(M2S(map), &entry, sizeof(pmap_entry), HASH_PTR(key));
+ p->value = value;
}
int pmap_contains(pmap *map, void *key) {
- return set_find((set *)map, &key, sizeof(pmap_entry), HASH_PTR(key)) != NULL;
+ return set_find(M2S(map), &key, sizeof(pmap_entry), HASH_PTR(key)) != NULL;
}
pmap_entry * pmap_find(pmap *map, void *key) {
- return (pmap_entry *)set_find((set *)map, &key, sizeof(pmap_entry), HASH_PTR(key));
+ return (pmap_entry *)set_find(M2S(map), &key, sizeof(pmap_entry), HASH_PTR(key));
}
return entry == NULL ? NULL : entry->value;
}
+int pmap_count(pmap *map) {
+ return set_count(M2S(map));
+}
pmap_entry *pmap_first(pmap *map) {
- return (pmap_entry *) set_first((set *)map);
+ return (pmap_entry *) set_first(M2S(map));
}
pmap_entry *pmap_next(pmap *map) {
- return (pmap_entry *) set_next((set *)map);
+ return (pmap_entry *) set_next(M2S(map));
}
void pmap_break(pmap *map) {
- set_break((set *)map);
+ set_break(M2S(map));
}