X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=include%2Favl.h;h=7081275842c2da7243772b8101f74c17eb5fa911;hb=b46547ada17b4585cc5c40150933be325bb1e9ac;hp=3281ef863e017745286cb45099c5d6070705f525;hpb=0c0f011dc0302348484d0278e2e8f2cbe53d1961;p=openldap

diff --git a/include/avl.h b/include/avl.h
index 3281ef863e..7081275842 100644
--- a/include/avl.h
+++ b/include/avl.h
@@ -1,6 +1,19 @@
 /* avl.h - avl tree definitions */
-/*
- * Copyright (c) 1993 Regents of the University of Michigan.
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2012 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 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.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms are permitted
@@ -21,59 +34,125 @@
  * this structure represents a generic avl tree node.
  */
 
-typedef struct avlnode {
-	caddr_t		avl_data;
+LDAP_BEGIN_DECL
+
+typedef struct avlnode Avlnode;
+
+struct avlnode {
+	void*		avl_data;
+	struct avlnode	*avl_link[2];
+	char		avl_bits[2];
 	signed char		avl_bf;
-	struct avlnode	*avl_left;
-	struct avlnode	*avl_right;
-} Avlnode;
+};
+
+#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 */
-#define LH 	-1
+#define LH 	(-1)
 #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))
 
-/* looks like this function pointer is not used consistently */
-/* typedef int	(*IFP)LDAP_P((caddr_t, caddr_t)); */
-typedef int	(*IFP)();
+#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*));
+typedef void	(*AVL_FREE) LDAP_P((void*));
+
+LDAP_AVL_F( int )
+avl_free LDAP_P(( Avlnode *root, AVL_FREE dfree ));
 
-LDAP_F int
-avl_insert LDAP_P((Avlnode **, caddr_t, IFP, IFP));
+LDAP_AVL_F( int )
+avl_insert LDAP_P((Avlnode **, void*, AVL_CMP, AVL_DUP));
 
-LDAP_F caddr_t
-avl_delete LDAP_P((Avlnode **, caddr_t, IFP));
+LDAP_AVL_F( void* )
+avl_delete LDAP_P((Avlnode **, void*, AVL_CMP));
 
-LDAP_F caddr_t
-avl_find LDAP_P((Avlnode *, caddr_t, IFP));
+LDAP_AVL_F( void* )
+avl_find LDAP_P((Avlnode *, const void*, AVL_CMP));
 
-LDAP_F caddr_t
+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));
+
+#ifdef AVL_NONREENTRANT
+LDAP_AVL_F( void* )
 avl_getfirst LDAP_P((Avlnode *));
 
-#ifdef AVL_REENTRANT
-LDAP_F caddr_t
-avl_getnext LDAP_P((Avlnode *, caddr_t ));
-#else
-LDAP_F caddr_t
+LDAP_AVL_F( void* )
 avl_getnext LDAP_P((void));
 #endif
 
-LDAP_F int
-avl_dup_error LDAP_P((void));
+LDAP_AVL_F( int )
+avl_dup_error LDAP_P((void*, void*));
+
+LDAP_AVL_F( int )
+avl_dup_ok LDAP_P((void*, void*));
+
+LDAP_AVL_F( int )
+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_F int
-avl_apply LDAP_P((Avlnode *, IFP, caddr_t, int, int));
+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
 #define AVL_POSTORDER	3
 /* what apply returns if it ran out of nodes */
-#define AVL_NOMORE	-6
+#define AVL_NOMORE	(-6)
+
+LDAP_END_DECL
 
 #endif /* _AVL */