X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fadt%2Fpmap.c;h=ef9c331a353f470fbc214490d9e685700833e478;hb=92869d69702fc0fd8e77832b9b68c60cb0d3e82a;hp=ffbe688a47f38792cb2ced9933bfc9857eeb1fce;hpb=7678991c92030f755075b344c47ccfddc1c4959b;p=libfirm

diff --git a/ir/adt/pmap.c b/ir/adt/pmap.c
index ffbe688a4..ef9c331a3 100644
--- a/ir/adt/pmap.c
+++ b/ir/adt/pmap.c
@@ -1,16 +1,33 @@
 /*
- * Project:     libFIRM
- * File name:   ir/adt/eset.c
- * Purpose:     Datentyp: Vereinfachte Map (hash-map) zum Speichern von
- *              Zeigern/Adressen -> Zeigern/Adressen.
- * Author:      Hubert Schmid
- * Modified by:
- * Created:     09.06.2002
- * CVS-ID:      $Id$
- * Copyright:   (c) 2002 Universität Karlsruhe
- * Licence:     This file protected by GPL -  GNU GENERAL PUBLIC LICENSE.
+ * Copyright (C) 1995-2007 University of Karlsruhe.  All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
+ *
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
+ *
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
  */
 
+/**
+ * @file
+ * @brief       simplified hashmap for pointer -> pointer mappings
+ * @author      Hubert Schmid
+ * @date        09.06.2002
+ * @version     $Id$
+ */
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
 #include "pmap.h"
 
 #include <assert.h>
@@ -19,65 +36,73 @@
 
 
 struct pmap {
-  int dummy; /* dummy entry */
+  	int dummy; /* dummy entry */
 };
 
 
 #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;
+	const pmap_entry *entry1 = p1;
+	const pmap_entry *entry2 = p2;
+	(void) size;
 
-  return entry1->key != entry2->key;
+	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, const void *key, void *value) {
+	pmap_entry entry, *p;
 
-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));
-  }
+	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;
+int pmap_contains(pmap *map, const void *key) {
+	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));
+pmap_entry * pmap_find(pmap *map, const void *key) {
+	return (pmap_entry *)set_find(M2S(map), &key, sizeof(pmap_entry), HASH_PTR(key));
 }
 
 
-void * pmap_get(pmap *map, void *key) {
-  pmap_entry * entry = pmap_find(map, key);
-  return entry == NULL ? NULL : entry->value;
+void * pmap_get(pmap *map, const void *key) {
+	pmap_entry * entry = pmap_find(map, 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(M2S(map));
 }