projects/libpws: compat/tree.h annotate

annotate compat/tree.h @ 12:1926dfc9feb0 version-1.0.0

Release version 1.0.0

author	Guido Berhoerster <guido+libpws@berhoerster.name>
date	Sun, 04 Aug 2019 21:36:05 +0200
parents	d541e748cfd8
children

rev	line source
0 d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	1 /* $OpenBSD: tree.h,v 1.13 2011/07/09 00:19:45 pirofti Exp $ */
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	2 /*
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	3 * Copyright 2002 Niels Provos <provos@citi.umich.edu>
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	4 * All rights reserved.
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	5 *
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	6 * Redistribution and use in source and binary forms, with or without
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	7 * modification, are permitted provided that the following conditions
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	8 * are met:
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	9 * 1. Redistributions of source code must retain the above copyright
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	10 * notice, this list of conditions and the following disclaimer.
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	11 * 2. Redistributions in binary form must reproduce the above copyright
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	12 * notice, this list of conditions and the following disclaimer in the
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	13 * documentation and/or other materials provided with the distribution.
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	14 *
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	25 */
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	26
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	27 #ifndef _SYS_TREE_H_
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	28 #define _SYS_TREE_H_
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	29
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	30 /*
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	31 * This file defines data structures for different types of trees:
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	32 * splay trees and red-black trees.
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	33 *
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	34 * A splay tree is a self-organizing data structure. Every operation
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	35 * on the tree causes a splay to happen. The splay moves the requested
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	36 * node to the root of the tree and partly rebalances it.
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	37 *
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	38 * This has the benefit that request locality causes faster lookups as
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	39 * the requested nodes move to the top of the tree. On the other hand,
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	40 * every lookup causes memory writes.
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	41 *
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	42 * The Balance Theorem bounds the total access time for m operations
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	43 * and n inserts on an initially empty tree as O((m + n)lg n). The
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	44 * amortized cost for a sequence of m accesses to a splay tree is O(lg n);
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	45 *
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	46 * A red-black tree is a binary search tree with the node color as an
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	47 * extra attribute. It fulfills a set of conditions:
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	48 * - every search path from the root to a leaf consists of the
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	49 * same number of black nodes,
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	50 * - each red node (except for the root) has a black parent,
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	51 * - each leaf node is black.
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	52 *
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	53 * Every operation on a red-black tree is bounded as O(lg n).
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	54 * The maximum height of a red-black tree is 2lg (n+1).
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	55 */
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	56
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	57 #define SPLAY_HEAD(name, type) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	58 struct name { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	59 struct type sph_root; / root of the tree */ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	60 }
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	61
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	62 #define SPLAY_INITIALIZER(root) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	63 { NULL }
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	64
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	65 #define SPLAY_INIT(root) do { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	66 (root)->sph_root = NULL; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	67 } while (0)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	68
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	69 #define SPLAY_ENTRY(type) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	70 struct { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	71 struct type spe_left; / left element */ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	72 struct type spe_right; / right element */ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	73 }
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	74
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	75 #define SPLAY_LEFT(elm, field) (elm)->field.spe_left
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	76 #define SPLAY_RIGHT(elm, field) (elm)->field.spe_right
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	77 #define SPLAY_ROOT(head) (head)->sph_root
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	78 #define SPLAY_EMPTY(head) (SPLAY_ROOT(head) == NULL)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	79
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	80 /* SPLAY_ROTATE_{LEFT,RIGHT} expect that tmp hold SPLAY_{RIGHT,LEFT} */
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	81 #define SPLAY_ROTATE_RIGHT(head, tmp, field) do { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	82 SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(tmp, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	83 SPLAY_RIGHT(tmp, field) = (head)->sph_root; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	84 (head)->sph_root = tmp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	85 } while (0)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	86
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	87 #define SPLAY_ROTATE_LEFT(head, tmp, field) do { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	88 SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(tmp, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	89 SPLAY_LEFT(tmp, field) = (head)->sph_root; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	90 (head)->sph_root = tmp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	91 } while (0)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	92
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	93 #define SPLAY_LINKLEFT(head, tmp, field) do { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	94 SPLAY_LEFT(tmp, field) = (head)->sph_root; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	95 tmp = (head)->sph_root; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	96 (head)->sph_root = SPLAY_LEFT((head)->sph_root, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	97 } while (0)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	98
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	99 #define SPLAY_LINKRIGHT(head, tmp, field) do { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	100 SPLAY_RIGHT(tmp, field) = (head)->sph_root; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	101 tmp = (head)->sph_root; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	102 (head)->sph_root = SPLAY_RIGHT((head)->sph_root, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	103 } while (0)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	104
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	105 #define SPLAY_ASSEMBLE(head, node, left, right, field) do { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	106 SPLAY_RIGHT(left, field) = SPLAY_LEFT((head)->sph_root, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	107 SPLAY_LEFT(right, field) = SPLAY_RIGHT((head)->sph_root, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	108 SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(node, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	109 SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(node, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	110 } while (0)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	111
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	112 /* Generates prototypes and inline functions */
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	113
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	114 #define SPLAY_PROTOTYPE(name, type, field, cmp) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	115 void name##_SPLAY(struct name , struct type ); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	116 void name##_SPLAY_MINMAX(struct name *, int); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	117 struct type name##_SPLAY_INSERT(struct name , struct type *); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	118 struct type name##_SPLAY_REMOVE(struct name , struct type *); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	119 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	120 /* Finds the node with the same key as elm */ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	121 static __inline struct type * \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	122 name##_SPLAY_FIND(struct name head, struct type elm) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	123 { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	124 if (SPLAY_EMPTY(head)) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	125 return(NULL); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	126 name##_SPLAY(head, elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	127 if ((cmp)(elm, (head)->sph_root) == 0) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	128 return (head->sph_root); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	129 return (NULL); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	130 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	131 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	132 static __inline struct type * \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	133 name##_SPLAY_NEXT(struct name head, struct type elm) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	134 { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	135 name##_SPLAY(head, elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	136 if (SPLAY_RIGHT(elm, field) != NULL) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	137 elm = SPLAY_RIGHT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	138 while (SPLAY_LEFT(elm, field) != NULL) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	139 elm = SPLAY_LEFT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	140 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	141 } else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	142 elm = NULL; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	143 return (elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	144 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	145 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	146 static __inline struct type * \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	147 name##_SPLAY_MIN_MAX(struct name *head, int val) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	148 { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	149 name##_SPLAY_MINMAX(head, val); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	150 return (SPLAY_ROOT(head)); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	151 }
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	152
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	153 /* Main splay operation.
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	154 * Moves node close to the key of elm to top
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	155 */
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	156 #define SPLAY_GENERATE(name, type, field, cmp) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	157 struct type * \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	158 name##_SPLAY_INSERT(struct name head, struct type elm) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	159 { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	160 if (SPLAY_EMPTY(head)) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	161 SPLAY_LEFT(elm, field) = SPLAY_RIGHT(elm, field) = NULL; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	162 } else { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	163 int __comp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	164 name##_SPLAY(head, elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	165 __comp = (cmp)(elm, (head)->sph_root); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	166 if(__comp < 0) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	167 SPLAY_LEFT(elm, field) = SPLAY_LEFT((head)->sph_root, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	168 SPLAY_RIGHT(elm, field) = (head)->sph_root; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	169 SPLAY_LEFT((head)->sph_root, field) = NULL; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	170 } else if (__comp > 0) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	171 SPLAY_RIGHT(elm, field) = SPLAY_RIGHT((head)->sph_root, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	172 SPLAY_LEFT(elm, field) = (head)->sph_root; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	173 SPLAY_RIGHT((head)->sph_root, field) = NULL; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	174 } else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	175 return ((head)->sph_root); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	176 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	177 (head)->sph_root = (elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	178 return (NULL); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	179 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	180 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	181 struct type * \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	182 name##_SPLAY_REMOVE(struct name head, struct type elm) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	183 { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	184 struct type *__tmp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	185 if (SPLAY_EMPTY(head)) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	186 return (NULL); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	187 name##_SPLAY(head, elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	188 if ((cmp)(elm, (head)->sph_root) == 0) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	189 if (SPLAY_LEFT((head)->sph_root, field) == NULL) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	190 (head)->sph_root = SPLAY_RIGHT((head)->sph_root, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	191 } else { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	192 __tmp = SPLAY_RIGHT((head)->sph_root, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	193 (head)->sph_root = SPLAY_LEFT((head)->sph_root, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	194 name##_SPLAY(head, elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	195 SPLAY_RIGHT((head)->sph_root, field) = __tmp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	196 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	197 return (elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	198 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	199 return (NULL); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	200 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	201 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	202 void \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	203 name##_SPLAY(struct name head, struct type elm) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	204 { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	205 struct type __node, __left, __right, *__tmp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	206 int __comp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	207 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	208 SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL;\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	209 __left = __right = &__node; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	210 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	211 while ((__comp = (cmp)(elm, (head)->sph_root))) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	212 if (__comp < 0) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	213 __tmp = SPLAY_LEFT((head)->sph_root, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	214 if (__tmp == NULL) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	215 break; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	216 if ((cmp)(elm, __tmp) < 0){ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	217 SPLAY_ROTATE_RIGHT(head, __tmp, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	218 if (SPLAY_LEFT((head)->sph_root, field) == NULL)\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	219 break; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	220 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	221 SPLAY_LINKLEFT(head, __right, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	222 } else if (__comp > 0) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	223 __tmp = SPLAY_RIGHT((head)->sph_root, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	224 if (__tmp == NULL) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	225 break; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	226 if ((cmp)(elm, __tmp) > 0){ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	227 SPLAY_ROTATE_LEFT(head, __tmp, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	228 if (SPLAY_RIGHT((head)->sph_root, field) == NULL)\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	229 break; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	230 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	231 SPLAY_LINKRIGHT(head, __left, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	232 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	233 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	234 SPLAY_ASSEMBLE(head, &__node, __left, __right, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	235 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	236 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	237 /* Splay with either the minimum or the maximum element \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	238 * Used to find minimum or maximum element in tree. \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	239 */ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	240 void name##_SPLAY_MINMAX(struct name *head, int __comp) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	241 { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	242 struct type __node, __left, __right, *__tmp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	243 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	244 SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL;\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	245 __left = __right = &__node; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	246 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	247 while (1) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	248 if (__comp < 0) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	249 __tmp = SPLAY_LEFT((head)->sph_root, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	250 if (__tmp == NULL) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	251 break; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	252 if (__comp < 0){ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	253 SPLAY_ROTATE_RIGHT(head, __tmp, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	254 if (SPLAY_LEFT((head)->sph_root, field) == NULL)\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	255 break; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	256 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	257 SPLAY_LINKLEFT(head, __right, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	258 } else if (__comp > 0) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	259 __tmp = SPLAY_RIGHT((head)->sph_root, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	260 if (__tmp == NULL) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	261 break; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	262 if (__comp > 0) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	263 SPLAY_ROTATE_LEFT(head, __tmp, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	264 if (SPLAY_RIGHT((head)->sph_root, field) == NULL)\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	265 break; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	266 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	267 SPLAY_LINKRIGHT(head, __left, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	268 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	269 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	270 SPLAY_ASSEMBLE(head, &__node, __left, __right, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	271 }
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	272
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	273 #define SPLAY_NEGINF -1
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	274 #define SPLAY_INF 1
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	275
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	276 #define SPLAY_INSERT(name, x, y) name##_SPLAY_INSERT(x, y)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	277 #define SPLAY_REMOVE(name, x, y) name##_SPLAY_REMOVE(x, y)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	278 #define SPLAY_FIND(name, x, y) name##_SPLAY_FIND(x, y)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	279 #define SPLAY_NEXT(name, x, y) name##_SPLAY_NEXT(x, y)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	280 #define SPLAY_MIN(name, x) (SPLAY_EMPTY(x) ? NULL \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	281 : name##_SPLAY_MIN_MAX(x, SPLAY_NEGINF))
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	282 #define SPLAY_MAX(name, x) (SPLAY_EMPTY(x) ? NULL \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	283 : name##_SPLAY_MIN_MAX(x, SPLAY_INF))
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	284
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	285 #define SPLAY_FOREACH(x, name, head) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	286 for ((x) = SPLAY_MIN(name, head); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	287 (x) != NULL; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	288 (x) = SPLAY_NEXT(name, head, x))
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	289
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	290 /* Macros that define a red-black tree */
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	291 #define RB_HEAD(name, type) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	292 struct name { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	293 struct type rbh_root; / root of the tree */ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	294 }
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	295
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	296 #define RB_INITIALIZER(root) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	297 { NULL }
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	298
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	299 #define RB_INIT(root) do { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	300 (root)->rbh_root = NULL; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	301 } while (0)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	302
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	303 #define RB_BLACK 0
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	304 #define RB_RED 1
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	305 #define RB_ENTRY(type) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	306 struct { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	307 struct type rbe_left; / left element */ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	308 struct type rbe_right; / right element */ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	309 struct type rbe_parent; / parent element */ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	310 int rbe_color; /* node color */ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	311 }
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	312
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	313 #define RB_LEFT(elm, field) (elm)->field.rbe_left
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	314 #define RB_RIGHT(elm, field) (elm)->field.rbe_right
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	315 #define RB_PARENT(elm, field) (elm)->field.rbe_parent
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	316 #define RB_COLOR(elm, field) (elm)->field.rbe_color
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	317 #define RB_ROOT(head) (head)->rbh_root
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	318 #define RB_EMPTY(head) (RB_ROOT(head) == NULL)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	319
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	320 #define RB_SET(elm, parent, field) do { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	321 RB_PARENT(elm, field) = parent; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	322 RB_LEFT(elm, field) = RB_RIGHT(elm, field) = NULL; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	323 RB_COLOR(elm, field) = RB_RED; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	324 } while (0)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	325
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	326 #define RB_SET_BLACKRED(black, red, field) do { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	327 RB_COLOR(black, field) = RB_BLACK; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	328 RB_COLOR(red, field) = RB_RED; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	329 } while (0)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	330
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	331 #ifndef RB_AUGMENT
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	332 #define RB_AUGMENT(x) do {} while (0)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	333 #endif
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	334
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	335 #define RB_ROTATE_LEFT(head, elm, tmp, field) do { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	336 (tmp) = RB_RIGHT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	337 if ((RB_RIGHT(elm, field) = RB_LEFT(tmp, field))) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	338 RB_PARENT(RB_LEFT(tmp, field), field) = (elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	339 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	340 RB_AUGMENT(elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	341 if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field))) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	342 if ((elm) == RB_LEFT(RB_PARENT(elm, field), field)) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	343 RB_LEFT(RB_PARENT(elm, field), field) = (tmp); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	344 else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	345 RB_RIGHT(RB_PARENT(elm, field), field) = (tmp); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	346 } else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	347 (head)->rbh_root = (tmp); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	348 RB_LEFT(tmp, field) = (elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	349 RB_PARENT(elm, field) = (tmp); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	350 RB_AUGMENT(tmp); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	351 if ((RB_PARENT(tmp, field))) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	352 RB_AUGMENT(RB_PARENT(tmp, field)); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	353 } while (0)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	354
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	355 #define RB_ROTATE_RIGHT(head, elm, tmp, field) do { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	356 (tmp) = RB_LEFT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	357 if ((RB_LEFT(elm, field) = RB_RIGHT(tmp, field))) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	358 RB_PARENT(RB_RIGHT(tmp, field), field) = (elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	359 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	360 RB_AUGMENT(elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	361 if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field))) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	362 if ((elm) == RB_LEFT(RB_PARENT(elm, field), field)) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	363 RB_LEFT(RB_PARENT(elm, field), field) = (tmp); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	364 else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	365 RB_RIGHT(RB_PARENT(elm, field), field) = (tmp); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	366 } else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	367 (head)->rbh_root = (tmp); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	368 RB_RIGHT(tmp, field) = (elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	369 RB_PARENT(elm, field) = (tmp); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	370 RB_AUGMENT(tmp); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	371 if ((RB_PARENT(tmp, field))) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	372 RB_AUGMENT(RB_PARENT(tmp, field)); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	373 } while (0)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	374
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	375 /* Generates prototypes and inline functions */
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	376 #define RB_PROTOTYPE(name, type, field, cmp) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	377 RB_PROTOTYPE_INTERNAL(name, type, field, cmp,)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	378 #define RB_PROTOTYPE_STATIC(name, type, field, cmp) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	379 RB_PROTOTYPE_INTERNAL(name, type, field, cmp, __attribute__((__unused__)) static)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	380 #define RB_PROTOTYPE_INTERNAL(name, type, field, cmp, attr) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	381 attr void name##_RB_INSERT_COLOR(struct name , struct type ); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	382 attr void name##_RB_REMOVE_COLOR(struct name , struct type , struct type *);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	383 attr struct type name##_RB_REMOVE(struct name , struct type *); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	384 attr struct type name##_RB_INSERT(struct name , struct type *); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	385 attr struct type name##_RB_FIND(struct name , struct type *); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	386 attr struct type name##_RB_NFIND(struct name , struct type *); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	387 attr struct type name##_RB_NEXT(struct type ); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	388 attr struct type name##_RB_PREV(struct type ); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	389 attr struct type name##_RB_MINMAX(struct name , int); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	390 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	391
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	392 /* Main rb operation.
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	393 * Moves node close to the key of elm to top
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	394 */
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	395 #define RB_GENERATE(name, type, field, cmp) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	396 RB_GENERATE_INTERNAL(name, type, field, cmp,)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	397 #define RB_GENERATE_STATIC(name, type, field, cmp) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	398 RB_GENERATE_INTERNAL(name, type, field, cmp, __attribute__((__unused__)) static)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	399 #define RB_GENERATE_INTERNAL(name, type, field, cmp, attr) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	400 attr void \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	401 name##_RB_INSERT_COLOR(struct name head, struct type elm) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	402 { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	403 struct type parent, gparent, *tmp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	404 while ((parent = RB_PARENT(elm, field)) && \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	405 RB_COLOR(parent, field) == RB_RED) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	406 gparent = RB_PARENT(parent, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	407 if (parent == RB_LEFT(gparent, field)) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	408 tmp = RB_RIGHT(gparent, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	409 if (tmp && RB_COLOR(tmp, field) == RB_RED) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	410 RB_COLOR(tmp, field) = RB_BLACK; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	411 RB_SET_BLACKRED(parent, gparent, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	412 elm = gparent; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	413 continue; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	414 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	415 if (RB_RIGHT(parent, field) == elm) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	416 RB_ROTATE_LEFT(head, parent, tmp, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	417 tmp = parent; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	418 parent = elm; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	419 elm = tmp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	420 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	421 RB_SET_BLACKRED(parent, gparent, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	422 RB_ROTATE_RIGHT(head, gparent, tmp, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	423 } else { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	424 tmp = RB_LEFT(gparent, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	425 if (tmp && RB_COLOR(tmp, field) == RB_RED) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	426 RB_COLOR(tmp, field) = RB_BLACK; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	427 RB_SET_BLACKRED(parent, gparent, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	428 elm = gparent; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	429 continue; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	430 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	431 if (RB_LEFT(parent, field) == elm) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	432 RB_ROTATE_RIGHT(head, parent, tmp, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	433 tmp = parent; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	434 parent = elm; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	435 elm = tmp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	436 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	437 RB_SET_BLACKRED(parent, gparent, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	438 RB_ROTATE_LEFT(head, gparent, tmp, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	439 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	440 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	441 RB_COLOR(head->rbh_root, field) = RB_BLACK; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	442 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	443 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	444 attr void \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	445 name##_RB_REMOVE_COLOR(struct name head, struct type parent, struct type *elm) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	446 { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	447 struct type *tmp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	448 while ((elm == NULL \|\| RB_COLOR(elm, field) == RB_BLACK) && \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	449 elm != RB_ROOT(head)) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	450 if (RB_LEFT(parent, field) == elm) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	451 tmp = RB_RIGHT(parent, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	452 if (RB_COLOR(tmp, field) == RB_RED) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	453 RB_SET_BLACKRED(tmp, parent, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	454 RB_ROTATE_LEFT(head, parent, tmp, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	455 tmp = RB_RIGHT(parent, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	456 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	457 if ((RB_LEFT(tmp, field) == NULL \|\| \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	458 RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) &&\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	459 (RB_RIGHT(tmp, field) == NULL \|\| \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	460 RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK)) {\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	461 RB_COLOR(tmp, field) = RB_RED; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	462 elm = parent; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	463 parent = RB_PARENT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	464 } else { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	465 if (RB_RIGHT(tmp, field) == NULL \|\| \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	466 RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK) {\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	467 struct type *oleft; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	468 if ((oleft = RB_LEFT(tmp, field)))\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	469 RB_COLOR(oleft, field) = RB_BLACK;\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	470 RB_COLOR(tmp, field) = RB_RED; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	471 RB_ROTATE_RIGHT(head, tmp, oleft, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	472 tmp = RB_RIGHT(parent, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	473 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	474 RB_COLOR(tmp, field) = RB_COLOR(parent, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	475 RB_COLOR(parent, field) = RB_BLACK; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	476 if (RB_RIGHT(tmp, field)) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	477 RB_COLOR(RB_RIGHT(tmp, field), field) = RB_BLACK;\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	478 RB_ROTATE_LEFT(head, parent, tmp, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	479 elm = RB_ROOT(head); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	480 break; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	481 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	482 } else { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	483 tmp = RB_LEFT(parent, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	484 if (RB_COLOR(tmp, field) == RB_RED) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	485 RB_SET_BLACKRED(tmp, parent, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	486 RB_ROTATE_RIGHT(head, parent, tmp, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	487 tmp = RB_LEFT(parent, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	488 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	489 if ((RB_LEFT(tmp, field) == NULL \|\| \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	490 RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) &&\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	491 (RB_RIGHT(tmp, field) == NULL \|\| \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	492 RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK)) {\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	493 RB_COLOR(tmp, field) = RB_RED; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	494 elm = parent; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	495 parent = RB_PARENT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	496 } else { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	497 if (RB_LEFT(tmp, field) == NULL \|\| \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	498 RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) {\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	499 struct type *oright; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	500 if ((oright = RB_RIGHT(tmp, field)))\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	501 RB_COLOR(oright, field) = RB_BLACK;\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	502 RB_COLOR(tmp, field) = RB_RED; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	503 RB_ROTATE_LEFT(head, tmp, oright, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	504 tmp = RB_LEFT(parent, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	505 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	506 RB_COLOR(tmp, field) = RB_COLOR(parent, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	507 RB_COLOR(parent, field) = RB_BLACK; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	508 if (RB_LEFT(tmp, field)) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	509 RB_COLOR(RB_LEFT(tmp, field), field) = RB_BLACK;\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	510 RB_ROTATE_RIGHT(head, parent, tmp, field);\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	511 elm = RB_ROOT(head); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	512 break; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	513 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	514 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	515 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	516 if (elm) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	517 RB_COLOR(elm, field) = RB_BLACK; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	518 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	519 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	520 attr struct type * \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	521 name##_RB_REMOVE(struct name head, struct type elm) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	522 { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	523 struct type child, parent, *old = elm; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	524 int color; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	525 if (RB_LEFT(elm, field) == NULL) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	526 child = RB_RIGHT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	527 else if (RB_RIGHT(elm, field) == NULL) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	528 child = RB_LEFT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	529 else { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	530 struct type *left; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	531 elm = RB_RIGHT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	532 while ((left = RB_LEFT(elm, field))) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	533 elm = left; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	534 child = RB_RIGHT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	535 parent = RB_PARENT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	536 color = RB_COLOR(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	537 if (child) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	538 RB_PARENT(child, field) = parent; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	539 if (parent) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	540 if (RB_LEFT(parent, field) == elm) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	541 RB_LEFT(parent, field) = child; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	542 else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	543 RB_RIGHT(parent, field) = child; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	544 RB_AUGMENT(parent); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	545 } else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	546 RB_ROOT(head) = child; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	547 if (RB_PARENT(elm, field) == old) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	548 parent = elm; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	549 (elm)->field = (old)->field; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	550 if (RB_PARENT(old, field)) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	551 if (RB_LEFT(RB_PARENT(old, field), field) == old)\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	552 RB_LEFT(RB_PARENT(old, field), field) = elm;\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	553 else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	554 RB_RIGHT(RB_PARENT(old, field), field) = elm;\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	555 RB_AUGMENT(RB_PARENT(old, field)); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	556 } else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	557 RB_ROOT(head) = elm; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	558 RB_PARENT(RB_LEFT(old, field), field) = elm; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	559 if (RB_RIGHT(old, field)) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	560 RB_PARENT(RB_RIGHT(old, field), field) = elm; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	561 if (parent) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	562 left = parent; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	563 do { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	564 RB_AUGMENT(left); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	565 } while ((left = RB_PARENT(left, field))); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	566 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	567 goto color; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	568 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	569 parent = RB_PARENT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	570 color = RB_COLOR(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	571 if (child) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	572 RB_PARENT(child, field) = parent; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	573 if (parent) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	574 if (RB_LEFT(parent, field) == elm) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	575 RB_LEFT(parent, field) = child; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	576 else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	577 RB_RIGHT(parent, field) = child; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	578 RB_AUGMENT(parent); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	579 } else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	580 RB_ROOT(head) = child; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	581 color: \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	582 if (color == RB_BLACK) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	583 name##_RB_REMOVE_COLOR(head, parent, child); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	584 return (old); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	585 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	586 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	587 /* Inserts a node into the RB tree */ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	588 attr struct type * \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	589 name##_RB_INSERT(struct name head, struct type elm) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	590 { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	591 struct type *tmp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	592 struct type *parent = NULL; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	593 int comp = 0; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	594 tmp = RB_ROOT(head); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	595 while (tmp) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	596 parent = tmp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	597 comp = (cmp)(elm, parent); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	598 if (comp < 0) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	599 tmp = RB_LEFT(tmp, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	600 else if (comp > 0) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	601 tmp = RB_RIGHT(tmp, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	602 else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	603 return (tmp); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	604 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	605 RB_SET(elm, parent, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	606 if (parent != NULL) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	607 if (comp < 0) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	608 RB_LEFT(parent, field) = elm; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	609 else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	610 RB_RIGHT(parent, field) = elm; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	611 RB_AUGMENT(parent); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	612 } else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	613 RB_ROOT(head) = elm; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	614 name##_RB_INSERT_COLOR(head, elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	615 return (NULL); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	616 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	617 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	618 /* Finds the node with the same key as elm */ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	619 attr struct type * \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	620 name##_RB_FIND(struct name head, struct type elm) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	621 { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	622 struct type *tmp = RB_ROOT(head); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	623 int comp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	624 while (tmp) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	625 comp = cmp(elm, tmp); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	626 if (comp < 0) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	627 tmp = RB_LEFT(tmp, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	628 else if (comp > 0) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	629 tmp = RB_RIGHT(tmp, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	630 else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	631 return (tmp); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	632 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	633 return (NULL); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	634 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	635 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	636 /* Finds the first node greater than or equal to the search key */ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	637 attr struct type * \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	638 name##_RB_NFIND(struct name head, struct type elm) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	639 { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	640 struct type *tmp = RB_ROOT(head); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	641 struct type *res = NULL; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	642 int comp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	643 while (tmp) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	644 comp = cmp(elm, tmp); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	645 if (comp < 0) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	646 res = tmp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	647 tmp = RB_LEFT(tmp, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	648 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	649 else if (comp > 0) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	650 tmp = RB_RIGHT(tmp, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	651 else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	652 return (tmp); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	653 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	654 return (res); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	655 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	656 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	657 /* ARGSUSED */ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	658 attr struct type * \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	659 name##_RB_NEXT(struct type *elm) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	660 { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	661 if (RB_RIGHT(elm, field)) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	662 elm = RB_RIGHT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	663 while (RB_LEFT(elm, field)) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	664 elm = RB_LEFT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	665 } else { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	666 if (RB_PARENT(elm, field) && \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	667 (elm == RB_LEFT(RB_PARENT(elm, field), field))) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	668 elm = RB_PARENT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	669 else { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	670 while (RB_PARENT(elm, field) && \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	671 (elm == RB_RIGHT(RB_PARENT(elm, field), field)))\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	672 elm = RB_PARENT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	673 elm = RB_PARENT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	674 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	675 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	676 return (elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	677 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	678 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	679 /* ARGSUSED */ \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	680 attr struct type * \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	681 name##_RB_PREV(struct type *elm) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	682 { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	683 if (RB_LEFT(elm, field)) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	684 elm = RB_LEFT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	685 while (RB_RIGHT(elm, field)) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	686 elm = RB_RIGHT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	687 } else { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	688 if (RB_PARENT(elm, field) && \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	689 (elm == RB_RIGHT(RB_PARENT(elm, field), field))) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	690 elm = RB_PARENT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	691 else { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	692 while (RB_PARENT(elm, field) && \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	693 (elm == RB_LEFT(RB_PARENT(elm, field), field)))\
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	694 elm = RB_PARENT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	695 elm = RB_PARENT(elm, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	696 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	697 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	698 return (elm); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	699 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	700 \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	701 attr struct type * \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	702 name##_RB_MINMAX(struct name *head, int val) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	703 { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	704 struct type *tmp = RB_ROOT(head); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	705 struct type *parent = NULL; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	706 while (tmp) { \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	707 parent = tmp; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	708 if (val < 0) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	709 tmp = RB_LEFT(tmp, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	710 else \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	711 tmp = RB_RIGHT(tmp, field); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	712 } \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	713 return (parent); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	714 }
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	715
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	716 #define RB_NEGINF -1
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	717 #define RB_INF 1
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	718
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	719 #define RB_INSERT(name, x, y) name##_RB_INSERT(x, y)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	720 #define RB_REMOVE(name, x, y) name##_RB_REMOVE(x, y)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	721 #define RB_FIND(name, x, y) name##_RB_FIND(x, y)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	722 #define RB_NFIND(name, x, y) name##_RB_NFIND(x, y)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	723 #define RB_NEXT(name, x, y) name##_RB_NEXT(y)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	724 #define RB_PREV(name, x, y) name##_RB_PREV(y)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	725 #define RB_MIN(name, x) name##_RB_MINMAX(x, RB_NEGINF)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	726 #define RB_MAX(name, x) name##_RB_MINMAX(x, RB_INF)
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	727
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	728 #define RB_FOREACH(x, name, head) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	729 for ((x) = RB_MIN(name, head); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	730 (x) != NULL; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	731 (x) = name##_RB_NEXT(x))
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	732
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	733 #define RB_FOREACH_SAFE(x, name, head, y) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	734 for ((x) = RB_MIN(name, head); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	735 ((x) != NULL) && ((y) = name##_RB_NEXT(x), 1); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	736 (x) = (y))
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	737
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	738 #define RB_FOREACH_REVERSE(x, name, head) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	739 for ((x) = RB_MAX(name, head); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	740 (x) != NULL; \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	741 (x) = name##_RB_PREV(x))
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	742
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	743 #define RB_FOREACH_REVERSE_SAFE(x, name, head, y) \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	744 for ((x) = RB_MAX(name, head); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	745 ((x) != NULL) && ((y) = name##_RB_PREV(x), 1); \
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	746 (x) = (y))
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	747
d541e748cfd8 Initial revision Guido Berhoerster <guido+libpws@berhoerster.name> parents: diff changeset	748 #endif /* _SYS_TREE_H_ */

Mercurial > projects > libpws

annotate compat/tree.h @ 12:1926dfc9feb0 version-1.0.0