X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=include%2Favl.h;h=a6e3325e10e1e5206fb60cda9fea03216015ac39;hb=82d17d860eb8d1d97c34e862847423ed3873ef84;hp=3d8a619dc9e5b499091d56b5fc9e60f543b205ad;hpb=6939c531700652491f4be4688c6a1f35a1ab8a18;p=openldap

diff --git a/include/avl.h b/include/avl.h
index 3d8a619dc9..a6e3325e10 100644
--- a/include/avl.h
+++ b/include/avl.h
@@ -1,16 +1,19 @@
+/* avl.h - avl tree definitions */
 /* $OpenLDAP$ */
-/*
- * Copyright 1998-2003 The OpenLDAP Foundation, Redwood City, California, USA
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2009 The OpenLDAP Foundation.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted only as authorized by the OpenLDAP
- * Public License.  A copy of this license is available at
- * http://www.OpenLDAP.org/license.html or in file LICENSE in the
- * top-level directory of the distribution.
+ * Public License.
+ *
+ * A copy of this license is available in file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
  */
-/* Portions
- * Copyright (c) 1993 Regents of the University of Michigan.
+/* Portions Copyright (c) 1993 Regents of the University of Michigan.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms are permitted
@@ -20,7 +23,6 @@
  * software without specific prior written permission. This software
  * is provided ``as is'' without express or implied warranty.
  */
-/* avl.h - avl tree definitions */
 
 
 #ifndef _AVL
@@ -36,14 +38,20 @@ LDAP_BEGIN_DECL
 
 typedef struct avlnode Avlnode;
 
-#ifdef AVL_INTERNAL
 struct avlnode {
 	void*		avl_data;
-	signed int		avl_bf;
-	struct avlnode	*avl_left;
-	struct avlnode	*avl_right;
+	struct avlnode	*avl_link[2];
+	char		avl_bits[2];
+	signed char		avl_bf;
 };
 
+#define avl_left	avl_link[0]
+#define avl_right	avl_link[1]
+#define avl_lbit	avl_bits[0]
+#define avl_rbit	avl_bits[1]
+
+#ifdef AVL_INTERNAL
+
 #define NULLAVL	((Avlnode *) NULL)
 
 /* balance factor values */
@@ -51,12 +59,23 @@ struct avlnode {
 #define EH 	0
 #define RH 	1
 
+#define avl_bf2str(bf)	((bf) == -1 ? "LH" : (bf) == 0 ? "EH" : (bf) == 1 ? "RH" : "(unknown)" )
+
+/* thread bits */
+#define	AVL_THREAD	0
+#define	AVL_CHILD	1
+
 /* avl routines */
 #define avl_getone(x)	((x) == 0 ? 0 : (x)->avl_data)
 #define avl_onenode(x)	((x) == 0 || ((x)->avl_left == 0 && (x)->avl_right == 0))
 
 #endif /* AVL_INTERNALS */
 
+#define	avl_child(x,dir)	((x)->avl_bits[dir]) == AVL_CHILD ? \
+	(x)->avl_link[dir] : NULL
+#define	avl_lchild(x)	avl_child(x,0)
+#define	avl_rchild(x)	avl_child(x,1)
+
 typedef int		(*AVL_APPLY) LDAP_P((void *, void*));
 typedef int		(*AVL_CMP) LDAP_P((const void*, const void*));
 typedef int		(*AVL_DUP) LDAP_P((void*, void*));
@@ -74,6 +93,9 @@ avl_delete LDAP_P((Avlnode **, void*, AVL_CMP));
 LDAP_AVL_F( void* )
 avl_find LDAP_P((Avlnode *, const void*, AVL_CMP));
 
+LDAP_AVL_F( Avlnode* )
+avl_find2 LDAP_P((Avlnode *, const void*, AVL_CMP));
+
 LDAP_AVL_F( void* )
 avl_find_lin LDAP_P((Avlnode *, const void*, AVL_CMP));
 
@@ -97,6 +119,33 @@ avl_apply LDAP_P((Avlnode *, AVL_APPLY, void*, int, int));
 LDAP_AVL_F( int )
 avl_prefixapply LDAP_P((Avlnode *, void*, AVL_CMP, void*, AVL_CMP, void*, int));
 
+LDAP_AVL_F( int )
+tavl_free LDAP_P(( Avlnode *root, AVL_FREE dfree ));
+
+LDAP_AVL_F( int )
+tavl_insert LDAP_P((Avlnode **, void*, AVL_CMP, AVL_DUP));
+
+LDAP_AVL_F( void* )
+tavl_delete LDAP_P((Avlnode **, void*, AVL_CMP));
+
+LDAP_AVL_F( void* )
+tavl_find LDAP_P((Avlnode *, const void*, AVL_CMP));
+
+LDAP_AVL_F( Avlnode* )
+tavl_find2 LDAP_P((Avlnode *, const void*, AVL_CMP));
+
+LDAP_AVL_F( Avlnode* )
+tavl_find3 LDAP_P((Avlnode *, const void*, AVL_CMP, int *ret));
+
+#define	TAVL_DIR_LEFT	0
+#define	TAVL_DIR_RIGHT	1
+
+LDAP_AVL_F( Avlnode* )
+tavl_end LDAP_P((Avlnode *, int direction ));
+
+LDAP_AVL_F( Avlnode* )
+tavl_next LDAP_P((Avlnode *, int direction ));
+
 /* apply traversal types */
 #define AVL_PREORDER	1
 #define AVL_INORDER	2