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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:35:32 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:35:32 +0000
commit5ea77a75dd2d2158401331879f3c8f47940a732c (patch)
treed89dc06e9f4850a900f161e25f84e922c4f86cc8 /include/ldap_avl.h
parentInitial commit. (diff)
downloadopenldap-5ea77a75dd2d2158401331879f3c8f47940a732c.tar.xz
openldap-5ea77a75dd2d2158401331879f3c8f47940a732c.zip
Adding upstream version 2.5.13+dfsg.upstream/2.5.13+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/ldap_avl.h')
-rw-r--r--include/ldap_avl.h165
1 files changed, 165 insertions, 0 deletions
diff --git a/include/ldap_avl.h b/include/ldap_avl.h
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+/* ldap_avl.h - avl tree definitions */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 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
+ * provided that this notice is preserved and that due credit is given
+ * to the University of Michigan at Ann Arbor. The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific prior written permission. This software
+ * is provided ``as is'' without express or implied warranty.
+ */
+
+
+#ifndef _AVL
+#define _AVL
+
+#include <ldap_cdefs.h>
+
+/*
+ * this structure represents a generic avl tree node.
+ */
+
+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;
+};
+
+#define avl_left avl_link[0]
+#define avl_right avl_link[1]
+#define avl_lbit avl_bits[0]
+#define avl_rbit avl_bits[1]
+
+typedef struct tavlnode TAvlnode;
+
+struct tavlnode {
+ void* avl_data;
+ struct tavlnode *avl_link[2];
+ char avl_bits[2];
+ signed char avl_bf;
+};
+
+#ifdef AVL_INTERNAL
+
+/* balance factor values */
+#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_CHILD 0
+#define AVL_THREAD 1
+
+/* avl routines */
+#define ldap_avl_getone(x) ((x) == 0 ? 0 : (x)->avl_data)
+#define ldap_avl_onenode(x) ((x) == 0 || ((x)->avl_left == 0 && (x)->avl_right == 0))
+
+#endif /* AVL_INTERNALS */
+
+#define ldap_avl_child(x,dir) ((x)->avl_bits[dir]) == AVL_CHILD ? \
+ (x)->avl_link[dir] : NULL
+#define ldap_avl_lchild(x) ldap_avl_child(x,0)
+#define ldap_avl_rchild(x) ldap_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 )
+ldap_avl_free LDAP_P(( Avlnode *root, AVL_FREE dfree ));
+
+LDAP_AVL_F( int )
+ldap_avl_insert LDAP_P((Avlnode **, void*, AVL_CMP, AVL_DUP));
+
+LDAP_AVL_F( void* )
+ldap_avl_delete LDAP_P((Avlnode **, void*, AVL_CMP));
+
+LDAP_AVL_F( void* )
+ldap_avl_find LDAP_P((Avlnode *, const void*, AVL_CMP));
+
+LDAP_AVL_F( Avlnode* )
+ldap_avl_find2 LDAP_P((Avlnode *, const void*, AVL_CMP));
+
+LDAP_AVL_F( void* )
+ldap_avl_find_lin LDAP_P((Avlnode *, const void*, AVL_CMP));
+
+#ifdef AVL_NONREENTRANT
+LDAP_AVL_F( void* )
+ldap_avl_getfirst LDAP_P((Avlnode *));
+
+LDAP_AVL_F( void* )
+ldap_avl_getnext LDAP_P((void));
+#endif
+
+LDAP_AVL_F( int )
+ldap_avl_dup_error LDAP_P((void*, void*));
+
+LDAP_AVL_F( int )
+ldap_avl_dup_ok LDAP_P((void*, void*));
+
+LDAP_AVL_F( int )
+ldap_avl_apply LDAP_P((Avlnode *, AVL_APPLY, void*, int, int));
+
+LDAP_AVL_F( int )
+ldap_avl_prefixapply LDAP_P((Avlnode *, void*, AVL_CMP, void*, AVL_CMP, void*, int));
+
+LDAP_AVL_F( int )
+ldap_tavl_free LDAP_P(( TAvlnode *root, AVL_FREE dfree ));
+
+LDAP_AVL_F( int )
+ldap_tavl_insert LDAP_P((TAvlnode **, void*, AVL_CMP, AVL_DUP));
+
+LDAP_AVL_F( void* )
+ldap_tavl_delete LDAP_P((TAvlnode **, void*, AVL_CMP));
+
+LDAP_AVL_F( void* )
+ldap_tavl_find LDAP_P((TAvlnode *, const void*, AVL_CMP));
+
+LDAP_AVL_F( TAvlnode* )
+ldap_tavl_find2 LDAP_P((TAvlnode *, const void*, AVL_CMP));
+
+LDAP_AVL_F( TAvlnode* )
+ldap_tavl_find3 LDAP_P((TAvlnode *, const void*, AVL_CMP, int *ret));
+
+#define TAVL_DIR_LEFT 0
+#define TAVL_DIR_RIGHT 1
+
+LDAP_AVL_F( TAvlnode* )
+ldap_tavl_end LDAP_P((TAvlnode *, int direction));
+
+LDAP_AVL_F( TAvlnode* )
+ldap_tavl_next LDAP_P((TAvlnode *, 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)
+
+LDAP_END_DECL
+
+#endif /* _AVL */