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annotate lib/gl_rbtreehash_list.c @ 6981:0bc4f2ff0eae

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Sequential list data type implemented by a hash table with a binary tree.
author Bruno Haible <bruno@clisp.org>
date Mon, 17 Jul 2006 11:31:28 +0000
parents
children 1c4ed7637c24
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6981
0bc4f2ff0eae Sequential list data type implemented by a hash table with a binary tree.
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1 /* Sequential list data type implemented by a hash table with a binary tree.
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2 Copyright (C) 2006 Free Software Foundation, Inc.
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3 Written by Bruno Haible <bruno@clisp.org>, 2006.
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4
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5 This program is free software; you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 2, or (at your option)
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8 any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; if not, write to the Free Software Foundation,
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17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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18
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19 #ifdef HAVE_CONFIG_H
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20 # include <config.h>
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21 #endif
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22
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23 /* Specification. */
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24 #include "gl_rbtreehash_list.h"
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25
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26 #include <stdlib.h>
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27
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28 #include "gl_rbtree_oset.h"
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29 #include "xalloc.h"
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30 #include "xsize.h"
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31 #include "size_max.h"
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32
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33 #ifndef uintptr_t
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34 # define uintptr_t unsigned long
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35 #endif
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36
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37 #define WITH_HASHTABLE 1
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38
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39 /* Which kind of binary trees to use for ordered sets. Quite arbitrary. */
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40 #define OSET_TREE_FLAVOR GL_RBTREE_OSET
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41
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42 /* -------------------------- gl_list_t Data Type -------------------------- */
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43
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44 /* Generic hash-table code: Type definitions. */
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45 #include "gl_anyhash_list1.h"
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46
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47 /* Generic red-black tree code: Type definitions. */
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48 #include "gl_anyrbtree_list1.h"
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49
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50 /* Generic hash-table code: Low-level code. */
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51 #include "gl_anyhash_list2.h"
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52
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53 /* Generic binary tree code: Type definitions. */
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54 #include "gl_anytree_list1.h"
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55
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56 /* Hash-table with binary tree code: Handling of hash buckets. */
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57 #include "gl_anytreehash_list1.h"
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58
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59 /* Generic red-black tree code: Insertion/deletion algorithms. */
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60 #include "gl_anyrbtree_list2.h"
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61
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62 /* Generic binary tree code: Functions taking advantage of the hash table. */
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63 #include "gl_anytreehash_list2.h"
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64
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65 /* Generic binary tree code: All other functions. */
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66 #include "gl_anytree_list2.h"
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67
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68 /* For debugging. */
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69 static unsigned int
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70 check_invariants (gl_list_node_t node, gl_list_node_t parent)
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71 {
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72 unsigned int left_blackheight =
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73 (node->left != NULL ? check_invariants (node->left, node) : 0);
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74 unsigned int right_blackheight =
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75 (node->right != NULL ? check_invariants (node->right, node) : 0);
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76
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77 if (!(node->parent == parent))
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78 abort ();
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79 if (!(node->branch_size
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80 == (node->left != NULL ? node->left->branch_size : 0)
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81 + 1 + (node->right != NULL ? node->right->branch_size : 0)))
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82 abort ();
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83 if (!(node->color == BLACK || node->color == RED))
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84 abort ();
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85 if (parent == NULL && !(node->color == BLACK))
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86 abort ();
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87 if (!(left_blackheight == right_blackheight))
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88 abort ();
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89
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90 return left_blackheight + (node->color == BLACK ? 1 : 0);
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91 }
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92 void
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93 gl_rbtreehash_list_check_invariants (gl_list_t list)
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94 {
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95 if (list->root != NULL)
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96 check_invariants (list->root, NULL);
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97 }
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98
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99
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100 const struct gl_list_implementation gl_avltreehash_list_implementation =
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101 {
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102 gl_tree_create_empty,
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103 gl_tree_create,
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104 gl_tree_size,
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105 gl_tree_node_value,
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106 gl_tree_next_node,
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107 gl_tree_previous_node,
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108 gl_tree_get_at,
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109 gl_tree_set_at,
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110 gl_tree_search,
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111 gl_tree_indexof,
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112 gl_tree_add_first,
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113 gl_tree_add_last,
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114 gl_tree_add_before,
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115 gl_tree_add_after,
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116 gl_tree_add_at,
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117 gl_tree_remove_node,
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118 gl_tree_remove_at,
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119 gl_tree_remove,
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120 gl_tree_list_free,
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121 gl_tree_iterator,
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122 gl_tree_iterator_from_to,
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123 gl_tree_iterator_next,
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124 gl_tree_iterator_free,
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125 gl_tree_sortedlist_search,
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126 gl_tree_sortedlist_indexof,
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127 gl_tree_sortedlist_add,
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128 gl_tree_sortedlist_remove
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129 };