src/cx/tree.h

Sun, 22 Dec 2024 23:10:07 +0100

author
Mike Becker <universe@uap-core.de>
date
Sun, 22 Dec 2024 23:10:07 +0100
changeset 1050
3df63e95921a
parent 993
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permissions
-rw-r--r--

make cx_strcast() also support cxstring

also makes the solution for issue #536 a lot nicer

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2024 Mike Becker, Olaf Wintermann All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28 /**
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29 * \file tree.h
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30 * \brief Interface for tree implementations.
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31 * \author Mike Becker
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32 * \author Olaf Wintermann
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33 * \copyright 2-Clause BSD License
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34 */
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35
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36 #ifndef UCX_TREE_H
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37 #define UCX_TREE_H
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38
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39 #include "common.h"
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40
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41 #include "collection.h"
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42
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43 #ifdef __cplusplus
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44 extern "C" {
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45 #endif
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46
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47 /**
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48 * A depth-first tree iterator.
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49 *
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50 * This iterator is not position-aware in a strict sense, as it does not assume
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51 * a particular order of elements in the tree. However, the iterator keeps track
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52 * of the number of nodes it has passed in a counter variable.
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53 * Each node, regardless of the number of passes, is counted only once.
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54 *
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55 * @note Objects that are pointed to by an iterator are mutable through that
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56 * iterator. However, if the
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57 * underlying data structure is mutated by other means than this iterator (e.g.
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58 * elements added or removed), the iterator becomes invalid (regardless of what
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59 * cxIteratorValid() returns).
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60 *
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61 * @see CxIterator
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62 */
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63 typedef struct cx_tree_iterator_s {
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64 /**
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65 * Base members.
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66 */
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67 CX_ITERATOR_BASE;
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68 /**
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69 * Indicates whether the subtree below the current node shall be skipped.
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70 */
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71 bool skip;
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72 /**
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73 * Set to true, when the iterator shall visit a node again
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74 * when all it's children have been processed.
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75 */
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76 bool visit_on_exit;
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77 /**
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78 * True, if this iterator is currently leaving the node.
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79 */
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80 bool exiting;
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81 /**
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82 * Offset in the node struct for the children linked list.
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83 */
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84 ptrdiff_t loc_children;
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85 /**
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86 * Offset in the node struct for the next pointer.
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87 */
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88 ptrdiff_t loc_next;
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89 /**
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90 * The total number of distinct nodes that have been passed so far.
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91 */
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92 size_t counter;
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93 /**
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94 * The currently observed node.
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95 *
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96 * This is the same what cxIteratorCurrent() would return.
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97 */
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98 void *node;
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99 /**
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100 * Stores a copy of the next pointer of the visited node.
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101 * Allows freeing a node on exit without corrupting the iteration.
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102 */
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103 void *node_next;
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104 /**
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105 * Internal stack.
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106 * Will be automatically freed once the iterator becomes invalid.
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107 *
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108 * If you want to discard the iterator before, you need to manually
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109 * call cxTreeIteratorDispose().
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110 */
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111 void **stack;
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112 /**
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113 * Internal capacity of the stack.
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114 */
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115 size_t stack_capacity;
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116 union {
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117 /**
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118 * Internal stack size.
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119 */
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120 size_t stack_size;
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121 /**
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122 * The current depth in the tree.
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123 */
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124 size_t depth;
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125 };
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126 } CxTreeIterator;
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127
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128 /**
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129 * An element in a visitor queue.
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130 */
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131 struct cx_tree_visitor_queue_s {
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132 /**
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133 * The tree node to visit.
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134 */
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135 void *node;
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136 /**
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137 * The depth of the node.
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138 */
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139 size_t depth;
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140 /**
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141 * The next element in the queue or \c NULL.
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142 */
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143 struct cx_tree_visitor_queue_s *next;
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144 };
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145
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146 /**
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147 * A breadth-first tree iterator.
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148 *
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149 * This iterator needs to maintain a visitor queue that will be automatically
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150 * freed once the iterator becomes invalid.
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151 * If you want to discard the iterator before, you MUST manually call
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152 * cxTreeVisitorDispose().
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153 *
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154 * This iterator is not position-aware in a strict sense, as it does not assume
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155 * a particular order of elements in the tree. However, the iterator keeps track
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156 * of the number of nodes it has passed in a counter variable.
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157 * Each node, regardless of the number of passes, is counted only once.
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158 *
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159 * @note Objects that are pointed to by an iterator are mutable through that
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160 * iterator. However, if the
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161 * underlying data structure is mutated by other means than this iterator (e.g.
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162 * elements added or removed), the iterator becomes invalid (regardless of what
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163 * cxIteratorValid() returns).
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164 *
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165 * @see CxIterator
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166 */
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167 typedef struct cx_tree_visitor_s {
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168 /**
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169 * Base members.
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170 */
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171 CX_ITERATOR_BASE;
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172 /**
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173 * Indicates whether the subtree below the current node shall be skipped.
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174 */
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175 bool skip;
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176 /**
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177 * Offset in the node struct for the children linked list.
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178 */
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179 ptrdiff_t loc_children;
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180 /**
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181 * Offset in the node struct for the next pointer.
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182 */
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183 ptrdiff_t loc_next;
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184 /**
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185 * The total number of distinct nodes that have been passed so far.
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186 */
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187 size_t counter;
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188 /**
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189 * The currently observed node.
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190 *
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191 * This is the same what cxIteratorCurrent() would return.
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192 */
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193 void *node;
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194 /**
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195 * The current depth in the tree.
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196 */
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197 size_t depth;
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198 /**
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199 * The next element in the visitor queue.
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200 */
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201 struct cx_tree_visitor_queue_s *queue_next;
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202 /**
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203 * The last element in the visitor queue.
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204 */
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205 struct cx_tree_visitor_queue_s *queue_last;
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206 } CxTreeVisitor;
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207
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208 /**
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209 * Releases internal memory of the given tree iterator.
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210 * @param iter the iterator
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211 */
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212 cx_attr_nonnull
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213 static inline void cxTreeIteratorDispose(CxTreeIterator *iter) {
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214 free(iter->stack);
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215 iter->stack = NULL;
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216 }
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217
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218 /**
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219 * Releases internal memory of the given tree visitor.
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220 * @param visitor the visitor
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221 */
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222 cx_attr_nonnull
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223 static inline void cxTreeVisitorDispose(CxTreeVisitor *visitor) {
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224 struct cx_tree_visitor_queue_s *q = visitor->queue_next;
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225 while (q != NULL) {
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226 struct cx_tree_visitor_queue_s *next = q->next;
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227 free(q);
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228 q = next;
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229 }
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230 }
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231
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232 /**
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233 * Advises the iterator to skip the subtree below the current node and
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234 * also continues the current loop.
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235 *
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236 * @param iterator the iterator
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237 */
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238 #define cxTreeIteratorContinue(iterator) (iterator).skip = true; continue
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239
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240 /**
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241 * Advises the visitor to skip the subtree below the current node and
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242 * also continues the current loop.
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243 *
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244 * @param visitor the visitor
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245 */
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246 #define cxTreeVisitorContinue(visitor) cxTreeIteratorContinue(visitor)
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247
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248 /**
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249 * Links a node to a (new) parent.
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250 *
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251 * If the node has already a parent, it is unlinked, first.
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252 * If the parent has children already, the node is \em appended to the list
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253 * of all currently existing children.
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254 *
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255 * @param parent the parent node
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256 * @param node the node that shall be linked
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257 * @param loc_parent offset in the node struct for the parent pointer
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258 * @param loc_children offset in the node struct for the children linked list
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259 * @param loc_last_child optional offset in the node struct for the pointer to
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260 * the last child in the linked list (negative if there is no such pointer)
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261 * @param loc_prev optional offset in the node struct for the prev pointer
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262 * @param loc_next offset in the node struct for the next pointer
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263 * @see cx_tree_unlink()
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264 */
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265 cx_attr_nonnull
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266 void cx_tree_link(
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267 void *parent,
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268 void *node,
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269 ptrdiff_t loc_parent,
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270 ptrdiff_t loc_children,
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271 ptrdiff_t loc_last_child,
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272 ptrdiff_t loc_prev,
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273 ptrdiff_t loc_next
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274 );
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275
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276 /**
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277 * Unlinks a node from its parent.
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278 *
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279 * If the node has no parent, this function does nothing.
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280 *
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281 * @param node the node that shall be unlinked from its parent
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282 * @param loc_parent offset in the node struct for the parent pointer
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283 * @param loc_children offset in the node struct for the children linked list
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284 * @param loc_last_child optional offset in the node struct for the pointer to
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285 * the last child in the linked list (negative if there is no such pointer)
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286 * @param loc_prev optional offset in the node struct for the prev pointer
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287 * @param loc_next offset in the node struct for the next pointer
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288 * @see cx_tree_link()
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289 */
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290 cx_attr_nonnull
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291 void cx_tree_unlink(
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292 void *node,
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293 ptrdiff_t loc_parent,
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294 ptrdiff_t loc_children,
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295 ptrdiff_t loc_last_child,
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296 ptrdiff_t loc_prev,
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297 ptrdiff_t loc_next
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298 );
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299
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300 /**
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301 * Macro that can be used instead of the magic value for infinite search depth.
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302 */
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303 #define CX_TREE_SEARCH_INFINITE_DEPTH 0
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304
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305 /**
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306 * Function pointer for a search function.
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307 *
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308 * A function of this kind shall check if the specified \p node
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309 * contains the given \p data or if one of the children might contain
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310 * the data.
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311 *
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312 * The function should use the returned integer to indicate how close the
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313 * match is, where a negative number means that it does not match at all.
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314 * Zero means exact match and a positive number is an implementation defined
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315 * measure for the distance to an exact match.
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316 *
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317 * For example if a tree stores file path information, a node that is
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318 * describing a parent directory of a filename that is searched, shall
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319 * return a positive number to indicate that a child node might contain the
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320 * searched item. On the other hand, if the node denotes a path that is not a
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321 * prefix of the searched filename, the function would return -1 to indicate
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322 * that the search does not need to be continued in that branch.
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323 *
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324 * @param node the node that is currently investigated
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325 * @param data the data that is searched for
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326 *
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327 * @return 0 if the node contains the data,
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328 * positive if one of the children might contain the data,
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329 * negative if neither the node, nor the children contains the data
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330 */
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331 cx_attr_nonnull
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332 typedef int (*cx_tree_search_data_func)(const void *node, const void *data);
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333
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334
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335 /**
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336 * Function pointer for a search function.
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337 *
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338 * A function of this kind shall check if the specified \p node
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339 * contains the same \p data as \p new_node or if one of the children might
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340 * contain the data.
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341 *
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342 * The function should use the returned integer to indicate how close the
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343 * match is, where a negative number means that it does not match at all.
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344 * Zero means exact match and a positive number is an implementation defined
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345 * measure for the distance to an exact match.
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346 *
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347 * For example if a tree stores file path information, a node that is
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348 * describing a parent directory of a filename that is searched, shall
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349 * return a positive number to indicate that a child node might contain the
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350 * searched item. On the other hand, if the node denotes a path that is not a
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351 * prefix of the searched filename, the function would return -1 to indicate
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352 * that the search does not need to be continued in that branch.
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353 *
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354 * @param node the node that is currently investigated
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355 * @param new_node a new node with the information which is searched
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356 *
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357 * @return 0 if \p node contains the same data as \p new_node,
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358 * positive if one of the children might contain the data,
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359 * negative if neither the node, nor the children contains the data
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360 */
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361 cx_attr_nonnull
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362 typedef int (*cx_tree_search_func)(const void *node, const void *new_node);
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363
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364 /**
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365 * Searches for data in a tree.
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366 *
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367 * When the data cannot be found exactly, the search function might return a
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368 * closest result which might be a good starting point for adding a new node
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369 * to the tree (see also #cx_tree_add()).
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370 *
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371 * Depending on the tree structure it is not necessarily guaranteed that the
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372 * "closest" match is uniquely defined. This function will search for a node
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373 * with the best match according to the \p sfunc (meaning: the return value of
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374 * \p sfunc which is closest to zero). If that is also ambiguous, an arbitrary
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375 * node matching the criteria is returned.
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376 *
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377 * @param root the root node
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378 * @param depth the maximum depth (zero=indefinite, one=just root)
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379 * @param data the data to search for
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380 * @param sfunc the search function
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381 * @param result where the result shall be stored
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382 * @param loc_children offset in the node struct for the children linked list
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383 * @param loc_next offset in the node struct for the next pointer
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384 * @return zero if the node was found exactly, positive if a node was found that
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385 * could contain the node (but doesn't right now), negative if the tree does not
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386 * contain any node that might be related to the searched data
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387 */
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388 cx_attr_nonnull
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389 cx_attr_access_w(5)
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390 int cx_tree_search_data(
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391 const void *root,
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392 size_t depth,
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393 const void *data,
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394 cx_tree_search_data_func sfunc,
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395 void **result,
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396 ptrdiff_t loc_children,
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397 ptrdiff_t loc_next
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398 );
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399
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400 /**
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401 * Searches for a node in a tree.
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402 *
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403 * When no node with the same data can be found, the search function might
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404 * return a closest result which might be a good starting point for adding the
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405 * new node to the tree (see also #cx_tree_add()).
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406 *
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407 * Depending on the tree structure it is not necessarily guaranteed that the
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408 * "closest" match is uniquely defined. This function will search for a node
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409 * with the best match according to the \p sfunc (meaning: the return value of
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410 * \p sfunc which is closest to zero). If that is also ambiguous, an arbitrary
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411 * node matching the criteria is returned.
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412 *
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413 * @param root the root node
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414 * @param depth the maximum depth (zero=indefinite, one=just root)
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415 * @param node the node to search for
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416 * @param sfunc the search function
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417 * @param result where the result shall be stored
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418 * @param loc_children offset in the node struct for the children linked list
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419 * @param loc_next offset in the node struct for the next pointer
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420 * @return zero if the node was found exactly, positive if a node was found that
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421 * could contain the node (but doesn't right now), negative if the tree does not
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422 * contain any node that might be related to the searched data
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423 */
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424 cx_attr_nonnull
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425 cx_attr_access_w(5)
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426 int cx_tree_search(
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427 const void *root,
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428 size_t depth,
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429 const void *node,
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430 cx_tree_search_func sfunc,
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431 void **result,
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432 ptrdiff_t loc_children,
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433 ptrdiff_t loc_next
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434 );
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435
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436 /**
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437 * Creates a depth-first iterator for a tree with the specified root node.
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438 *
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439 * @note A tree iterator needs to maintain a stack of visited nodes, which is
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440 * allocated using stdlib malloc().
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441 * When the iterator becomes invalid, this memory is automatically released.
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442 * However, if you wish to cancel the iteration before the iterator becomes
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parents: 854
diff changeset
443 * invalid by itself, you MUST call cxTreeIteratorDispose() manually to release
828
88fa3381206d improve tree iterator struct and add signature for a function that can create an iterator
Mike Becker <universe@uap-core.de>
parents: 827
diff changeset
444 * the memory.
88fa3381206d improve tree iterator struct and add signature for a function that can create an iterator
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parents: 827
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445 *
845
2615317311b7 add cx_tree_visitor()
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parents: 840
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446 * @remark The returned iterator does not support cxIteratorFlagRemoval().
828
88fa3381206d improve tree iterator struct and add signature for a function that can create an iterator
Mike Becker <universe@uap-core.de>
parents: 827
diff changeset
447 *
88fa3381206d improve tree iterator struct and add signature for a function that can create an iterator
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448 * @param root the root node
859
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449 * @param visit_on_exit set to true, when the iterator shall visit a node again
6367456bf2d9 minor doc fixes
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parents: 854
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450 * after processing all children
828
88fa3381206d improve tree iterator struct and add signature for a function that can create an iterator
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parents: 827
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451 * @param loc_children offset in the node struct for the children linked list
88fa3381206d improve tree iterator struct and add signature for a function that can create an iterator
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parents: 827
diff changeset
452 * @param loc_next offset in the node struct for the next pointer
88fa3381206d improve tree iterator struct and add signature for a function that can create an iterator
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parents: 827
diff changeset
453 * @return the new tree iterator
88fa3381206d improve tree iterator struct and add signature for a function that can create an iterator
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parents: 827
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454 * @see cxTreeIteratorDispose()
88fa3381206d improve tree iterator struct and add signature for a function that can create an iterator
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parents: 827
diff changeset
455 */
985
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456 cx_attr_nodiscard
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diff changeset
457 CxTreeIterator cx_tree_iterator(
c4dae6fe6d5b commit complicated stuff before simplifying it
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diff changeset
458 void *root,
833
5c926801f052 vastly simplify tree iterators and add test for creating them
Mike Becker <universe@uap-core.de>
parents: 830
diff changeset
459 bool visit_on_exit,
828
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diff changeset
460 ptrdiff_t loc_children,
88fa3381206d improve tree iterator struct and add signature for a function that can create an iterator
Mike Becker <universe@uap-core.de>
parents: 827
diff changeset
461 ptrdiff_t loc_next
88fa3381206d improve tree iterator struct and add signature for a function that can create an iterator
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parents: 827
diff changeset
462 );
88fa3381206d improve tree iterator struct and add signature for a function that can create an iterator
Mike Becker <universe@uap-core.de>
parents: 827
diff changeset
463
845
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parents: 840
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464 /**
2615317311b7 add cx_tree_visitor()
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parents: 840
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465 * Creates a breadth-first iterator for a tree with the specified root node.
2615317311b7 add cx_tree_visitor()
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parents: 840
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466 *
859
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467 * @note A tree visitor needs to maintain a queue of to be visited nodes, which
6367456bf2d9 minor doc fixes
Mike Becker <universe@uap-core.de>
parents: 854
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468 * is allocated using stdlib malloc().
6367456bf2d9 minor doc fixes
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parents: 854
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469 * When the visitor becomes invalid, this memory is automatically released.
6367456bf2d9 minor doc fixes
Mike Becker <universe@uap-core.de>
parents: 854
diff changeset
470 * However, if you wish to cancel the iteration before the visitor becomes
6367456bf2d9 minor doc fixes
Mike Becker <universe@uap-core.de>
parents: 854
diff changeset
471 * invalid by itself, you MUST call cxTreeVisitorDispose() manually to release
845
2615317311b7 add cx_tree_visitor()
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parents: 840
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472 * the memory.
2615317311b7 add cx_tree_visitor()
Mike Becker <universe@uap-core.de>
parents: 840
diff changeset
473 *
2615317311b7 add cx_tree_visitor()
Mike Becker <universe@uap-core.de>
parents: 840
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474 * @remark The returned iterator does not support cxIteratorFlagRemoval().
2615317311b7 add cx_tree_visitor()
Mike Becker <universe@uap-core.de>
parents: 840
diff changeset
475 *
2615317311b7 add cx_tree_visitor()
Mike Becker <universe@uap-core.de>
parents: 840
diff changeset
476 * @param root the root node
2615317311b7 add cx_tree_visitor()
Mike Becker <universe@uap-core.de>
parents: 840
diff changeset
477 * @param loc_children offset in the node struct for the children linked list
2615317311b7 add cx_tree_visitor()
Mike Becker <universe@uap-core.de>
parents: 840
diff changeset
478 * @param loc_next offset in the node struct for the next pointer
2615317311b7 add cx_tree_visitor()
Mike Becker <universe@uap-core.de>
parents: 840
diff changeset
479 * @return the new tree visitor
2615317311b7 add cx_tree_visitor()
Mike Becker <universe@uap-core.de>
parents: 840
diff changeset
480 * @see cxTreeVisitorDispose()
2615317311b7 add cx_tree_visitor()
Mike Becker <universe@uap-core.de>
parents: 840
diff changeset
481 */
985
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diff changeset
482 cx_attr_nodiscard
845
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parents: 840
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483 CxTreeVisitor cx_tree_visitor(
2615317311b7 add cx_tree_visitor()
Mike Becker <universe@uap-core.de>
parents: 840
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484 void *root,
2615317311b7 add cx_tree_visitor()
Mike Becker <universe@uap-core.de>
parents: 840
diff changeset
485 ptrdiff_t loc_children,
2615317311b7 add cx_tree_visitor()
Mike Becker <universe@uap-core.de>
parents: 840
diff changeset
486 ptrdiff_t loc_next
2615317311b7 add cx_tree_visitor()
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parents: 840
diff changeset
487 );
2615317311b7 add cx_tree_visitor()
Mike Becker <universe@uap-core.de>
parents: 840
diff changeset
488
860
558ed4c6abd0 add prototypes for cx_tree_add() family of functions
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parents: 859
diff changeset
489 /**
558ed4c6abd0 add prototypes for cx_tree_add() family of functions
Mike Becker <universe@uap-core.de>
parents: 859
diff changeset
490 * Describes a function that creates a tree node from the specified data.
864
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
491 * The first argument points to the data the node shall contain and
871
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
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parents: 867
diff changeset
492 * the second argument may be used for additional data (e.g. an allocator).
864
7d3061f212cb complete specification for tree_add functions
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parents: 863
diff changeset
493 * Functions of this type shall either return a new pointer to a newly
871
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
494 * created node or \c NULL when allocation fails.
865
4b325b639117 fix return type of cx_tree_node_create_func
Mike Becker <universe@uap-core.de>
parents: 864
diff changeset
495 *
4b325b639117 fix return type of cx_tree_node_create_func
Mike Becker <universe@uap-core.de>
parents: 864
diff changeset
496 * \note the function may leave the node pointers in the struct uninitialized.
871
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
497 * The caller is responsible to set them according to the intended use case.
860
558ed4c6abd0 add prototypes for cx_tree_add() family of functions
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parents: 859
diff changeset
498 */
985
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
499 cx_attr_nonnull_arg(1)
890
54565fd74e74 move all const keywords to the west - fixes #426
Mike Becker <universe@uap-core.de>
parents: 871
diff changeset
500 typedef void *(*cx_tree_node_create_func)(const void *, void *);
864
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
501
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
502 /**
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
503 * The local search depth for a new subtree when adding multiple elements.
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
504 * The default value is 3.
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
505 * This variable is used by #cx_tree_add_array() and #cx_tree_add_iter() to
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
506 * implement optimized insertion of multiple elements into a tree.
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
507 */
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
508 extern unsigned int cx_tree_add_look_around_depth;
860
558ed4c6abd0 add prototypes for cx_tree_add() family of functions
Mike Becker <universe@uap-core.de>
parents: 859
diff changeset
509
864
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
510 /**
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
511 * Adds multiple elements efficiently to a tree.
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
512 *
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
513 * Once an element cannot be added to the tree, this function returns, leaving
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
514 * the iterator in a valid state pointing to the element that could not be
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
515 * added.
871
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
516 * Also, the pointer of the created node will be stored to \p failed.
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
517 * The integer returned by this function denotes the number of elements obtained
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
518 * from the \p iter that have been successfully processed.
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
519 * When all elements could be processed, a \c NULL pointer will be written to
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
520 * \p failed.
864
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
521 *
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
522 * The advantage of this function compared to multiple invocations of
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
523 * #cx_tree_add() is that the search for the insert locations is not always
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
524 * started from the root node.
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
525 * Instead, the function checks #cx_tree_add_look_around_depth many parent nodes
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
526 * of the current insert location before starting from the root node again.
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
527 * When the variable is set to zero, only the last found location is checked
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
528 * again.
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
529 *
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
530 * Refer to the documentation of #cx_tree_add() for more details.
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
531 *
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
532 * @param iter a pointer to an arbitrary iterator
893
0a2b328f5b91 add bounding parameter to cx_tree_add_iter()
Mike Becker <universe@uap-core.de>
parents: 890
diff changeset
533 * @param num the maximum number of elements to obtain from the iterator
864
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
534 * @param sfunc a search function
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
535 * @param cfunc a node creation function
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
536 * @param cdata optional additional data
871
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
537 * @param root the root node of the tree
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
538 * @param failed location where the pointer to a failed node shall be stored
864
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
539 * @param loc_parent offset in the node struct for the parent pointer
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
540 * @param loc_children offset in the node struct for the children linked list
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
541 * @param loc_last_child optional offset in the node struct for the pointer to
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
542 * the last child in the linked list (negative if there is no such pointer)
921
5a7aa9cf9c3a make loc_prev in trees optional - fixes #433
Mike Becker <universe@uap-core.de>
parents: 918
diff changeset
543 * @param loc_prev optional offset in the node struct for the prev pointer
864
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
544 * @param loc_next offset in the node struct for the next pointer
871
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
545 * @return the number of nodes created and added
864
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
546 * @see cx_tree_add()
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
547 */
985
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
548 cx_attr_nonnull_arg(1, 3, 4, 6, 7)
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
549 cx_attr_access_w(6)
860
558ed4c6abd0 add prototypes for cx_tree_add() family of functions
Mike Becker <universe@uap-core.de>
parents: 859
diff changeset
550 size_t cx_tree_add_iter(
558ed4c6abd0 add prototypes for cx_tree_add() family of functions
Mike Becker <universe@uap-core.de>
parents: 859
diff changeset
551 struct cx_iterator_base_s *iter,
893
0a2b328f5b91 add bounding parameter to cx_tree_add_iter()
Mike Becker <universe@uap-core.de>
parents: 890
diff changeset
552 size_t num,
860
558ed4c6abd0 add prototypes for cx_tree_add() family of functions
Mike Becker <universe@uap-core.de>
parents: 859
diff changeset
553 cx_tree_search_func sfunc,
864
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
554 cx_tree_node_create_func cfunc,
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
555 void *cdata,
871
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
556 void **failed,
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
557 void *root,
860
558ed4c6abd0 add prototypes for cx_tree_add() family of functions
Mike Becker <universe@uap-core.de>
parents: 859
diff changeset
558 ptrdiff_t loc_parent,
558ed4c6abd0 add prototypes for cx_tree_add() family of functions
Mike Becker <universe@uap-core.de>
parents: 859
diff changeset
559 ptrdiff_t loc_children,
864
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
560 ptrdiff_t loc_last_child,
860
558ed4c6abd0 add prototypes for cx_tree_add() family of functions
Mike Becker <universe@uap-core.de>
parents: 859
diff changeset
561 ptrdiff_t loc_prev,
558ed4c6abd0 add prototypes for cx_tree_add() family of functions
Mike Becker <universe@uap-core.de>
parents: 859
diff changeset
562 ptrdiff_t loc_next
558ed4c6abd0 add prototypes for cx_tree_add() family of functions
Mike Becker <universe@uap-core.de>
parents: 859
diff changeset
563 );
558ed4c6abd0 add prototypes for cx_tree_add() family of functions
Mike Becker <universe@uap-core.de>
parents: 859
diff changeset
564
864
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
565 /**
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
566 * Adds multiple elements efficiently to a tree.
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
567 *
871
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
568 * Once an element cannot be added to the tree, this function returns, storing
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
569 * the pointer of the created node to \p failed.
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
570 * The integer returned by this function denotes the number of elements from
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
571 * the \p src array that have been successfully processed.
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
572 * When all elements could be processed, a \c NULL pointer will be written to
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
573 * \p failed.
864
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
574 *
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
575 * The advantage of this function compared to multiple invocations of
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
576 * #cx_tree_add() is that the search for the insert locations is not always
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
577 * started from the root node.
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
578 * Instead, the function checks #cx_tree_add_look_around_depth many parent nodes
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
579 * of the current insert location before starting from the root node again.
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
580 * When the variable is set to zero, only the last found location is checked
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
581 * again.
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
582 *
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
583 * Refer to the documentation of #cx_tree_add() for more details.
7d3061f212cb complete specification for tree_add functions
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parents: 863
diff changeset
584 *
7d3061f212cb complete specification for tree_add functions
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parents: 863
diff changeset
585 * @param src a pointer to the source data array
7d3061f212cb complete specification for tree_add functions
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parents: 863
diff changeset
586 * @param num the number of elements in the \p src array
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diff changeset
587 * @param elem_size the size of each element in the \p src array
7d3061f212cb complete specification for tree_add functions
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parents: 863
diff changeset
588 * @param sfunc a search function
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diff changeset
589 * @param cfunc a node creation function
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590 * @param cdata optional additional data
871
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591 * @param failed location where the pointer to a failed node shall be stored
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diff changeset
592 * @param root the root node of the tree
864
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593 * @param loc_parent offset in the node struct for the parent pointer
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parents: 863
diff changeset
594 * @param loc_children offset in the node struct for the children linked list
7d3061f212cb complete specification for tree_add functions
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parents: 863
diff changeset
595 * @param loc_last_child optional offset in the node struct for the pointer to
7d3061f212cb complete specification for tree_add functions
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parents: 863
diff changeset
596 * the last child in the linked list (negative if there is no such pointer)
921
5a7aa9cf9c3a make loc_prev in trees optional - fixes #433
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diff changeset
597 * @param loc_prev optional offset in the node struct for the prev pointer
864
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diff changeset
598 * @param loc_next offset in the node struct for the next pointer
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parents: 863
diff changeset
599 * @return the number of array elements successfully processed
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diff changeset
600 * @see cx_tree_add()
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601 */
985
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602 cx_attr_nonnull_arg(1, 4, 5, 7, 8)
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603 cx_attr_access_w(7)
860
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604 size_t cx_tree_add_array(
890
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diff changeset
605 const void *src,
860
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606 size_t num,
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607 size_t elem_size,
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diff changeset
608 cx_tree_search_func sfunc,
864
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609 cx_tree_node_create_func cfunc,
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diff changeset
610 void *cdata,
871
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diff changeset
611 void **failed,
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612 void *root,
860
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613 ptrdiff_t loc_parent,
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614 ptrdiff_t loc_children,
864
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diff changeset
615 ptrdiff_t loc_last_child,
860
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616 ptrdiff_t loc_prev,
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617 ptrdiff_t loc_next
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618 );
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619
864
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620 /**
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621 * Adds data to a tree.
7d3061f212cb complete specification for tree_add functions
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622 *
7d3061f212cb complete specification for tree_add functions
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623 * An adequate location where to add the new tree node is searched with the
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
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diff changeset
624 * specified \p sfunc.
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625 *
871
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diff changeset
626 * When a location is found, the \p cfunc will be invoked with \p cdata.
864
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diff changeset
627 *
871
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diff changeset
628 * The node returned by \p cfunc will be linked into the tree.
867
471c714d5b6f cx_tree_add() fix missing spec for adding duplicates
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parents: 865
diff changeset
629 * When \p sfunc returned a positive integer, the new node will be linked as a
871
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parents: 867
diff changeset
630 * child. The other children (now siblings of the new node) are then checked
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
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parents: 867
diff changeset
631 * with \p sfunc, whether they could be children of the new node and re-linked
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
632 * accordingly.
867
471c714d5b6f cx_tree_add() fix missing spec for adding duplicates
Mike Becker <universe@uap-core.de>
parents: 865
diff changeset
633 *
871
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diff changeset
634 * When \p sfunc returned zero and the found node has a parent, the new
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
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parents: 867
diff changeset
635 * node will be added as sibling - otherwise, the new node will be added
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
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diff changeset
636 * as a child.
864
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parents: 863
diff changeset
637 *
871
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Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
638 * When \p sfunc returned a negative value, the new node will not be added to
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
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parents: 867
diff changeset
639 * the tree and this function returns a non-zero value.
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
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parents: 867
diff changeset
640 * The caller should check if \p cnode contains a node pointer and deal with the
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
641 * node that could not be added.
864
7d3061f212cb complete specification for tree_add functions
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parents: 863
diff changeset
642 *
871
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
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parents: 867
diff changeset
643 * This function also returns a non-zero value when \p cfunc tries to allocate
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
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parents: 867
diff changeset
644 * a new node but fails to do so. In that case, the pointer stored to \p cnode
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
645 * will be \c NULL.
864
7d3061f212cb complete specification for tree_add functions
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parents: 863
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646 *
7d3061f212cb complete specification for tree_add functions
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parents: 863
diff changeset
647 * Multiple elements can be added more efficiently with
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
648 * #cx_tree_add_array() or #cx_tree_add_iter().
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
649 *
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diff changeset
650 * @param src a pointer to the data
7d3061f212cb complete specification for tree_add functions
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parents: 863
diff changeset
651 * @param sfunc a search function
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Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
652 * @param cfunc a node creation function
7d3061f212cb complete specification for tree_add functions
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parents: 863
diff changeset
653 * @param cdata optional additional data
871
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parents: 867
diff changeset
654 * @param cnode the location where a pointer to the new node is stored
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
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655 * @param root the root node of the tree
864
7d3061f212cb complete specification for tree_add functions
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parents: 863
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656 * @param loc_parent offset in the node struct for the parent pointer
7d3061f212cb complete specification for tree_add functions
Mike Becker <universe@uap-core.de>
parents: 863
diff changeset
657 * @param loc_children offset in the node struct for the children linked list
7d3061f212cb complete specification for tree_add functions
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parents: 863
diff changeset
658 * @param loc_last_child optional offset in the node struct for the pointer to
7d3061f212cb complete specification for tree_add functions
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parents: 863
diff changeset
659 * the last child in the linked list (negative if there is no such pointer)
921
5a7aa9cf9c3a make loc_prev in trees optional - fixes #433
Mike Becker <universe@uap-core.de>
parents: 918
diff changeset
660 * @param loc_prev optional offset in the node struct for the prev pointer
864
7d3061f212cb complete specification for tree_add functions
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parents: 863
diff changeset
661 * @param loc_next offset in the node struct for the next pointer
871
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Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
662 * @return zero when a new node was created and added to the tree,
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
Mike Becker <universe@uap-core.de>
parents: 867
diff changeset
663 * non-zero otherwise
864
7d3061f212cb complete specification for tree_add functions
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diff changeset
664 */
985
68754c7de906 major refactoring of attributes
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diff changeset
665 cx_attr_nonnull_arg(1, 2, 3, 5, 6)
68754c7de906 major refactoring of attributes
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diff changeset
666 cx_attr_access_w(5)
871
e29c1f96646d rework cx_tree_add() API to allow insertion of edge nodes
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diff changeset
667 int cx_tree_add(
890
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diff changeset
668 const void *src,
860
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669 cx_tree_search_func sfunc,
864
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670 cx_tree_node_create_func cfunc,
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diff changeset
671 void *cdata,
871
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diff changeset
672 void **cnode,
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diff changeset
673 void *root,
860
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674 ptrdiff_t loc_parent,
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diff changeset
675 ptrdiff_t loc_children,
864
7d3061f212cb complete specification for tree_add functions
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diff changeset
676 ptrdiff_t loc_last_child,
860
558ed4c6abd0 add prototypes for cx_tree_add() family of functions
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diff changeset
677 ptrdiff_t loc_prev,
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diff changeset
678 ptrdiff_t loc_next
558ed4c6abd0 add prototypes for cx_tree_add() family of functions
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diff changeset
679 );
558ed4c6abd0 add prototypes for cx_tree_add() family of functions
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parents: 859
diff changeset
680
894
89cd8dfdc3c2 first draft of a class for high level trees
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diff changeset
681
89cd8dfdc3c2 first draft of a class for high level trees
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diff changeset
682 /**
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diff changeset
683 * Tree class type.
89cd8dfdc3c2 first draft of a class for high level trees
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684 */
89cd8dfdc3c2 first draft of a class for high level trees
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685 typedef struct cx_tree_class_s cx_tree_class;
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686
89cd8dfdc3c2 first draft of a class for high level trees
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diff changeset
687 /**
897
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diff changeset
688 * Base structure that can be used for tree nodes in a #CxTree.
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diff changeset
689 */
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diff changeset
690 struct cx_tree_node_base_s {
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691 /**
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692 * Pointer to the parent.
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693 */
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694 struct cx_tree_node_base_s *parent;
0936916856a2 add allocator and root node pointer to tree structure
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695 /**
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diff changeset
696 * Pointer to the first child.
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diff changeset
697 */
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698 struct cx_tree_node_base_s *children;
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diff changeset
699 /**
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diff changeset
700 * Pointer to the last child.
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diff changeset
701 */
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702 struct cx_tree_node_base_s *last_child;
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diff changeset
703 /**
0936916856a2 add allocator and root node pointer to tree structure
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diff changeset
704 * Pointer to the previous sibling.
0936916856a2 add allocator and root node pointer to tree structure
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diff changeset
705 */
0936916856a2 add allocator and root node pointer to tree structure
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diff changeset
706 struct cx_tree_node_base_s *prev;
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diff changeset
707 /**
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diff changeset
708 * Pointer to the next sibling.
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diff changeset
709 */
0936916856a2 add allocator and root node pointer to tree structure
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diff changeset
710 struct cx_tree_node_base_s *next;
0936916856a2 add allocator and root node pointer to tree structure
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diff changeset
711 };
0936916856a2 add allocator and root node pointer to tree structure
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diff changeset
712
0936916856a2 add allocator and root node pointer to tree structure
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parents: 896
diff changeset
713 /**
894
89cd8dfdc3c2 first draft of a class for high level trees
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diff changeset
714 * Structure for holding the base data of a tree.
89cd8dfdc3c2 first draft of a class for high level trees
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diff changeset
715 */
89cd8dfdc3c2 first draft of a class for high level trees
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716 struct cx_tree_s {
89cd8dfdc3c2 first draft of a class for high level trees
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717 /**
89cd8dfdc3c2 first draft of a class for high level trees
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parents: 893
diff changeset
718 * The tree class definition.
89cd8dfdc3c2 first draft of a class for high level trees
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diff changeset
719 */
89cd8dfdc3c2 first draft of a class for high level trees
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720 const cx_tree_class *cl;
89cd8dfdc3c2 first draft of a class for high level trees
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721
89cd8dfdc3c2 first draft of a class for high level trees
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diff changeset
722 /**
897
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723 * Allocator to allocate new nodes.
0936916856a2 add allocator and root node pointer to tree structure
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diff changeset
724 */
902
5ed7f634f046 implement cxTreeCreate family of functions
Mike Becker <universe@uap-core.de>
parents: 901
diff changeset
725 const CxAllocator *allocator;
897
0936916856a2 add allocator and root node pointer to tree structure
Mike Becker <universe@uap-core.de>
parents: 896
diff changeset
726
0936916856a2 add allocator and root node pointer to tree structure
Mike Becker <universe@uap-core.de>
parents: 896
diff changeset
727 /**
0936916856a2 add allocator and root node pointer to tree structure
Mike Becker <universe@uap-core.de>
parents: 896
diff changeset
728 * A pointer to the root node.
0936916856a2 add allocator and root node pointer to tree structure
Mike Becker <universe@uap-core.de>
parents: 896
diff changeset
729 *
0936916856a2 add allocator and root node pointer to tree structure
Mike Becker <universe@uap-core.de>
parents: 896
diff changeset
730 * Will be \c NULL when \c size is 0.
0936916856a2 add allocator and root node pointer to tree structure
Mike Becker <universe@uap-core.de>
parents: 896
diff changeset
731 */
902
5ed7f634f046 implement cxTreeCreate family of functions
Mike Becker <universe@uap-core.de>
parents: 901
diff changeset
732 void *root;
897
0936916856a2 add allocator and root node pointer to tree structure
Mike Becker <universe@uap-core.de>
parents: 896
diff changeset
733
0936916856a2 add allocator and root node pointer to tree structure
Mike Becker <universe@uap-core.de>
parents: 896
diff changeset
734 /**
894
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
735 * A function to create new nodes.
895
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
736 *
897
0936916856a2 add allocator and root node pointer to tree structure
Mike Becker <universe@uap-core.de>
parents: 896
diff changeset
737 * Invocations to this function will receive a pointer to this tree
0936916856a2 add allocator and root node pointer to tree structure
Mike Becker <universe@uap-core.de>
parents: 896
diff changeset
738 * structure as second argument.
0936916856a2 add allocator and root node pointer to tree structure
Mike Becker <universe@uap-core.de>
parents: 896
diff changeset
739 *
895
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
740 * Nodes MAY use #cx_tree_node_base_s as base layout, but do not need to.
894
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
741 */
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
742 cx_tree_node_create_func node_create;
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
743
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
744 /**
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
745 * An optional simple destructor for the tree nodes.
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
746 */
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
747 cx_destructor_func simple_destructor;
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
748
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
749 /**
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
750 * An optional advanced destructor for the tree nodes.
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
751 */
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
752 cx_destructor_func2 advanced_destructor;
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
753
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
754 /**
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
755 * The pointer to additional data that is passed to the advanced destructor.
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
756 */
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
757 void *destructor_data;
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
758
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
759 /**
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
760 * A function to compare two nodes.
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
761 */
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
762 cx_tree_search_func search;
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
763
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
764 /**
905
39aa4f106a71 complete implementation of remaining high level tree functions
Mike Becker <universe@uap-core.de>
parents: 904
diff changeset
765 * A function to compare a node with data.
39aa4f106a71 complete implementation of remaining high level tree functions
Mike Becker <universe@uap-core.de>
parents: 904
diff changeset
766 */
39aa4f106a71 complete implementation of remaining high level tree functions
Mike Becker <universe@uap-core.de>
parents: 904
diff changeset
767 cx_tree_search_data_func search_data;
39aa4f106a71 complete implementation of remaining high level tree functions
Mike Becker <universe@uap-core.de>
parents: 904
diff changeset
768
39aa4f106a71 complete implementation of remaining high level tree functions
Mike Becker <universe@uap-core.de>
parents: 904
diff changeset
769 /**
894
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
770 * The number of currently stored elements.
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
771 */
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
772 size_t size;
895
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
773
898
9b2c12494ccf prototypes for create and destroy functions
Mike Becker <universe@uap-core.de>
parents: 897
diff changeset
774 /**
895
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
775 * Offset in the node struct for the parent pointer.
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
776 */
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
777 ptrdiff_t loc_parent;
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
778
898
9b2c12494ccf prototypes for create and destroy functions
Mike Becker <universe@uap-core.de>
parents: 897
diff changeset
779 /**
895
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
780 * Offset in the node struct for the children linked list.
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
781 */
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
782 ptrdiff_t loc_children;
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
783
898
9b2c12494ccf prototypes for create and destroy functions
Mike Becker <universe@uap-core.de>
parents: 897
diff changeset
784 /**
895
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
785 * Optional offset in the node struct for the pointer to the last child
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
786 * in the linked list (negative if there is no such pointer).
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
787 */
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
788 ptrdiff_t loc_last_child;
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
789
898
9b2c12494ccf prototypes for create and destroy functions
Mike Becker <universe@uap-core.de>
parents: 897
diff changeset
790 /**
895
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
791 * Offset in the node struct for the previous sibling pointer.
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
792 */
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
793 ptrdiff_t loc_prev;
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
794
898
9b2c12494ccf prototypes for create and destroy functions
Mike Becker <universe@uap-core.de>
parents: 897
diff changeset
795 /**
895
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
796 * Offset in the node struct for the next sibling pointer.
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
797 */
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
798 ptrdiff_t loc_next;
894
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
799 };
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
800
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
801 /**
895
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
802 * Macro to roll out the #cx_tree_node_base_s structure with a custom
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
803 * node type.
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
804 */
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
805 #define CX_TREE_NODE_BASE(type) \
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
806 type *parent; \
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
807 type *children;\
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
808 type *last_child;\
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
809 type *prev;\
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
810 type *next
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
811
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
812 /**
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
813 * Macro for specifying the layout of a base node tree.
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
814 */
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
815 #define cx_tree_node_base_layout \
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
816 offsetof(struct cx_tree_node_base_s, parent),\
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
817 offsetof(struct cx_tree_node_base_s, children),\
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
818 offsetof(struct cx_tree_node_base_s, last_child),\
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
819 offsetof(struct cx_tree_node_base_s, prev), \
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
820 offsetof(struct cx_tree_node_base_s, next)
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
821
ea1ac0e8225c provide a default tree node layout, but do not make it mandatory
Mike Becker <universe@uap-core.de>
parents: 894
diff changeset
822 /**
901
109567325fe7 add functions to link/unlink nodes manually
Mike Becker <universe@uap-core.de>
parents: 900
diff changeset
823 * Macro for obtaining the node pointer layout for a specific tree.
109567325fe7 add functions to link/unlink nodes manually
Mike Becker <universe@uap-core.de>
parents: 900
diff changeset
824 */
109567325fe7 add functions to link/unlink nodes manually
Mike Becker <universe@uap-core.de>
parents: 900
diff changeset
825 #define cx_tree_node_layout(tree) \
109567325fe7 add functions to link/unlink nodes manually
Mike Becker <universe@uap-core.de>
parents: 900
diff changeset
826 (tree)->loc_parent,\
109567325fe7 add functions to link/unlink nodes manually
Mike Becker <universe@uap-core.de>
parents: 900
diff changeset
827 (tree)->loc_children,\
109567325fe7 add functions to link/unlink nodes manually
Mike Becker <universe@uap-core.de>
parents: 900
diff changeset
828 (tree)->loc_last_child,\
109567325fe7 add functions to link/unlink nodes manually
Mike Becker <universe@uap-core.de>
parents: 900
diff changeset
829 (tree)->loc_prev, \
109567325fe7 add functions to link/unlink nodes manually
Mike Becker <universe@uap-core.de>
parents: 900
diff changeset
830 (tree)->loc_next
109567325fe7 add functions to link/unlink nodes manually
Mike Becker <universe@uap-core.de>
parents: 900
diff changeset
831
109567325fe7 add functions to link/unlink nodes manually
Mike Becker <universe@uap-core.de>
parents: 900
diff changeset
832 /**
894
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
833 * The class definition for arbitrary trees.
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
834 */
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
835 struct cx_tree_class_s {
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
836 /**
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
837 * Member function for inserting a single element.
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
838 *
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
839 * Implementations SHALL NOT simply invoke \p insert_many as this comes
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
840 * with too much overhead.
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
841 */
985
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
842 cx_attr_nonnull
894
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
843 int (*insert_element)(
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
844 struct cx_tree_s *tree,
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
845 const void *data
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
846 );
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
847
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
848 /**
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
849 * Member function for inserting multiple elements.
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
850 *
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
851 * Implementations SHALL avoid to perform a full search in the tree for
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
852 * every element even though the source data MAY be unsorted.
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
853 */
985
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
854 cx_attr_nonnull
894
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
855 size_t (*insert_many)(
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
856 struct cx_tree_s *tree,
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
857 struct cx_iterator_base_s *iter,
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
858 size_t n
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
859 );
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
860
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
861 /**
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
862 * Member function for finding a node.
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
863 */
985
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
864 cx_attr_nonnull
894
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
865 void *(*find)(
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
866 struct cx_tree_s *tree,
896
7e09c76390c3 allow find() member function to start in an arbitrary subtree
Mike Becker <universe@uap-core.de>
parents: 895
diff changeset
867 const void *subtree,
930
6540096c17b7 add max depth for tree search - closes #459
Mike Becker <universe@uap-core.de>
parents: 927
diff changeset
868 const void *data,
6540096c17b7 add max depth for tree search - closes #459
Mike Becker <universe@uap-core.de>
parents: 927
diff changeset
869 size_t depth
894
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
870 );
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
871 };
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
872
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
873 /**
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
874 * Common type for all tree implementations.
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
875 */
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
876 typedef struct cx_tree_s CxTree;
89cd8dfdc3c2 first draft of a class for high level trees
Mike Becker <universe@uap-core.de>
parents: 893
diff changeset
877
913
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
878
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
879 /**
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
880 * Destroys a node and it's subtree.
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
881 *
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
882 * It is guaranteed that the simple destructor is invoked before
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
883 * the advanced destructor, starting with the leaf nodes of the subtree.
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
884 *
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
885 * When this function is invoked on the root node of the tree, it destroys the
993
b642eca4b956 make names of destroy and free functions consistent - fixes #484
Mike Becker <universe@uap-core.de>
parents: 989
diff changeset
886 * tree contents, but - in contrast to #cxTreeFree() - not the tree
913
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
887 * structure, leaving an empty tree behind.
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
888 *
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
889 * \note The destructor function, if any, will \em not be invoked. That means
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
890 * you will need to free the removed subtree by yourself, eventually.
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
891 *
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
892 * \attention This function will not free the memory of the nodes with the
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
893 * tree's allocator, because that is usually done by the advanced destructor
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
894 * and would therefore result in a double-free.
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
895 *
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
896 * @param tree the tree
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
897 * @param node the node to remove
993
b642eca4b956 make names of destroy and free functions consistent - fixes #484
Mike Becker <universe@uap-core.de>
parents: 989
diff changeset
898 * @see cxTreeFree()
913
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
899 */
985
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
900 cx_attr_nonnull
913
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
901 void cxTreeDestroySubtree(CxTree *tree, void *node);
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
902
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
903
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
904 /**
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
905 * Destroys the tree contents.
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
906 *
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
907 * It is guaranteed that the simple destructor is invoked before
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
908 * the advanced destructor, starting with the leaf nodes of the subtree.
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
909 *
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
910 * This is a convenience macro for invoking #cxTreeDestroySubtree() on the
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
911 * root node of the tree.
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
912 *
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
913 * \attention Be careful when calling this function when no destructor function
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
914 * is registered that actually frees the memory of nodes. In that case you will
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
915 * need a reference to the (former) root node of the tree somewhere or
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
916 * otherwise you will be leaking memory.
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
917 *
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
918 * @param tree the tree
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
919 * @see cxTreeDestroySubtree()
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
920 */
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
921 #define cxTreeClear(tree) cxTreeDestroySubtree(tree, tree->root)
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
922
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
923 /**
993
b642eca4b956 make names of destroy and free functions consistent - fixes #484
Mike Becker <universe@uap-core.de>
parents: 989
diff changeset
924 * Deallocates the tree structure.
913
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
925 *
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
926 * The destructor functions are invoked for each node, starting with the leaf
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
927 * nodes.
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
928 * It is guaranteed that for each node the simple destructor is invoked before
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
929 * the advanced destructor.
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
930 *
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
931 * \attention This function will only invoke the destructor functions
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
932 * on the nodes.
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
933 * It will NOT additionally free the nodes with the tree's allocator, because
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
934 * that would cause a double-free in most scenarios where the advanced
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
935 * destructor is already freeing the memory.
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
936 *
993
b642eca4b956 make names of destroy and free functions consistent - fixes #484
Mike Becker <universe@uap-core.de>
parents: 989
diff changeset
937 * @param tree the tree to free
913
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
938 */
993
b642eca4b956 make names of destroy and free functions consistent - fixes #484
Mike Becker <universe@uap-core.de>
parents: 989
diff changeset
939 static inline void cxTreeFree(CxTree *tree) {
985
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
940 if (tree == NULL) return;
913
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
941 if (tree->root != NULL) {
985
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
942 cxTreeClear(tree);
913
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
943 }
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
944 cxFree(tree->allocator, tree);
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
945 }
72db8e42b95e implement cxTreeDestroyNode and cxTreeDestroySubtree - resolves #438
Mike Becker <universe@uap-core.de>
parents: 909
diff changeset
946
985
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
947 /**
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
948 * Creates a new tree structure based on the specified layout.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
949 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
950 * The specified \p allocator will be used for creating the tree struct
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
951 * and SHALL be used by \p create_func to allocate memory for the nodes.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
952 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
953 * \note This function will also register an advanced destructor which
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
954 * will free the nodes with the allocator's free() method.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
955 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
956 * @param allocator the allocator that shall be used
989
8aa57a7fecc4 improve consistency for allocator arguments - fixes #485
Mike Becker <universe@uap-core.de>
parents: 988
diff changeset
957 * (if \c NULL, a default stdlib allocator will be used)
985
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
958 * @param create_func a function that creates new nodes
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
959 * @param search_func a function that compares two nodes
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
960 * @param search_data_func a function that compares a node with data
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
961 * @param loc_parent offset in the node struct for the parent pointer
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
962 * @param loc_children offset in the node struct for the children linked list
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
963 * @param loc_last_child optional offset in the node struct for the pointer to
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
964 * the last child in the linked list (negative if there is no such pointer)
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
965 * @param loc_prev optional offset in the node struct for the prev pointer
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
966 * @param loc_next offset in the node struct for the next pointer
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
967 * @return the new tree
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
968 * @see cxTreeCreateSimple()
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
969 * @see cxTreeCreateWrapped()
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
970 */
989
8aa57a7fecc4 improve consistency for allocator arguments - fixes #485
Mike Becker <universe@uap-core.de>
parents: 988
diff changeset
971 cx_attr_nonnull_arg(2, 3, 4)
985
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
972 cx_attr_nodiscard
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
973 cx_attr_malloc
993
b642eca4b956 make names of destroy and free functions consistent - fixes #484
Mike Becker <universe@uap-core.de>
parents: 989
diff changeset
974 cx_attr_dealloc(cxTreeFree, 1)
985
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
975 CxTree *cxTreeCreate(
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
976 const CxAllocator *allocator,
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
977 cx_tree_node_create_func create_func,
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
978 cx_tree_search_func search_func,
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
979 cx_tree_search_data_func search_data_func,
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
980 ptrdiff_t loc_parent,
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
981 ptrdiff_t loc_children,
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
982 ptrdiff_t loc_last_child,
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
983 ptrdiff_t loc_prev,
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
984 ptrdiff_t loc_next
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
985 );
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
986
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
987 /**
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
988 * Creates a new tree structure based on a default layout.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
989 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
990 * Nodes created by \p create_func MUST contain #cx_tree_node_base_s as first
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
991 * member (or at least respect the default offsets specified in the tree
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
992 * struct) and they MUST be allocated with the specified allocator.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
993 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
994 * \note This function will also register an advanced destructor which
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
995 * will free the nodes with the allocator's free() method.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
996 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
997 * @param allocator the allocator that shall be used
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
998 * @param create_func a function that creates new nodes
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
999 * @param search_func a function that compares two nodes
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1000 * @param search_data_func a function that compares a node with data
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1001 * @return the new tree
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1002 * @see cxTreeCreate()
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1003 */
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1004 #define cxTreeCreateSimple(\
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1005 allocator, create_func, search_func, search_data_func \
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1006 ) cxTreeCreate(allocator, create_func, search_func, search_data_func, \
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1007 cx_tree_node_base_layout)
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1008
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1009 /**
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1010 * Creates a new tree structure based on an existing tree.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1011 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1012 * The specified \p allocator will be used for creating the tree struct.
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diff changeset
1013 *
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diff changeset
1014 * \attention This function will create an incompletely defined tree structure
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diff changeset
1015 * where neither the create function, the search function, nor a destructor
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parents: 930
diff changeset
1016 * will be set. If you wish to use any of this functionality for the wrapped
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1017 * tree, you need to specify those functions afterwards.
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diff changeset
1018 *
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diff changeset
1019 * @param allocator the allocator that was used for nodes of the wrapped tree
989
8aa57a7fecc4 improve consistency for allocator arguments - fixes #485
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parents: 988
diff changeset
1020 * (if \c NULL, a default stdlib allocator is assumed)
985
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diff changeset
1021 * @param root the root node of the tree that shall be wrapped
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diff changeset
1022 * @param loc_parent offset in the node struct for the parent pointer
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diff changeset
1023 * @param loc_children offset in the node struct for the children linked list
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diff changeset
1024 * @param loc_last_child optional offset in the node struct for the pointer to
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parents: 930
diff changeset
1025 * the last child in the linked list (negative if there is no such pointer)
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diff changeset
1026 * @param loc_prev optional offset in the node struct for the prev pointer
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diff changeset
1027 * @param loc_next offset in the node struct for the next pointer
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diff changeset
1028 * @return the new tree
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parents: 930
diff changeset
1029 * @see cxTreeCreate()
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parents: 930
diff changeset
1030 */
989
8aa57a7fecc4 improve consistency for allocator arguments - fixes #485
Mike Becker <universe@uap-core.de>
parents: 988
diff changeset
1031 cx_attr_nonnull_arg(2)
985
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diff changeset
1032 cx_attr_nodiscard
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diff changeset
1033 cx_attr_malloc
993
b642eca4b956 make names of destroy and free functions consistent - fixes #484
Mike Becker <universe@uap-core.de>
parents: 989
diff changeset
1034 cx_attr_dealloc(cxTreeFree, 1)
985
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diff changeset
1035 CxTree *cxTreeCreateWrapped(
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diff changeset
1036 const CxAllocator *allocator,
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diff changeset
1037 void *root,
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diff changeset
1038 ptrdiff_t loc_parent,
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diff changeset
1039 ptrdiff_t loc_children,
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diff changeset
1040 ptrdiff_t loc_last_child,
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diff changeset
1041 ptrdiff_t loc_prev,
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parents: 930
diff changeset
1042 ptrdiff_t loc_next
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diff changeset
1043 );
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diff changeset
1044
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diff changeset
1045 /**
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diff changeset
1046 * Inserts data into the tree.
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diff changeset
1047 *
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diff changeset
1048 * \remark For this function to work, the tree needs specified search and
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diff changeset
1049 * create functions, which might not be available for wrapped trees
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diff changeset
1050 * (see #cxTreeCreateWrapped()).
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diff changeset
1051 *
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diff changeset
1052 * @param tree the tree
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diff changeset
1053 * @param data the data to insert
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diff changeset
1054 * @return zero on success, non-zero on failure
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diff changeset
1055 */
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diff changeset
1056 cx_attr_nonnull
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diff changeset
1057 static inline int cxTreeInsert(
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diff changeset
1058 CxTree *tree,
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diff changeset
1059 const void *data
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diff changeset
1060 ) {
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diff changeset
1061 return tree->cl->insert_element(tree, data);
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diff changeset
1062 }
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diff changeset
1063
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diff changeset
1064 /**
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diff changeset
1065 * Inserts elements provided by an iterator efficiently into the tree.
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diff changeset
1066 *
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diff changeset
1067 * \remark For this function to work, the tree needs specified search and
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parents: 930
diff changeset
1068 * create functions, which might not be available for wrapped trees
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parents: 930
diff changeset
1069 * (see #cxTreeCreateWrapped()).
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diff changeset
1070 *
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diff changeset
1071 * @param tree the tree
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diff changeset
1072 * @param iter the iterator providing the elements
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diff changeset
1073 * @param n the maximum number of elements to insert
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diff changeset
1074 * @return the number of elements that could be successfully inserted
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parents: 930
diff changeset
1075 */
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parents: 930
diff changeset
1076 cx_attr_nonnull
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parents: 930
diff changeset
1077 static inline size_t cxTreeInsertIter(
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parents: 930
diff changeset
1078 CxTree *tree,
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parents: 930
diff changeset
1079 struct cx_iterator_base_s *iter,
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diff changeset
1080 size_t n
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parents: 930
diff changeset
1081 ) {
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parents: 930
diff changeset
1082 return tree->cl->insert_many(tree, iter, n);
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parents: 930
diff changeset
1083 }
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diff changeset
1084
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diff changeset
1085 /**
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parents: 930
diff changeset
1086 * Inserts an array of data efficiently into the tree.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1087 *
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parents: 930
diff changeset
1088 * \remark For this function to work, the tree needs specified search and
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1089 * create functions, which might not be available for wrapped trees
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1090 * (see #cxTreeCreateWrapped()).
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1091 *
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parents: 930
diff changeset
1092 * @param tree the tree
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parents: 930
diff changeset
1093 * @param data the array of data to insert
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parents: 930
diff changeset
1094 * @param elem_size the size of each element in the array
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parents: 930
diff changeset
1095 * @param n the number of elements in the array
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parents: 930
diff changeset
1096 * @return the number of elements that could be successfully inserted
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1097 */
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parents: 930
diff changeset
1098 cx_attr_nonnull
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parents: 930
diff changeset
1099 static inline size_t cxTreeInsertArray(
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parents: 930
diff changeset
1100 CxTree *tree,
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diff changeset
1101 const void *data,
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diff changeset
1102 size_t elem_size,
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diff changeset
1103 size_t n
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parents: 930
diff changeset
1104 ) {
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parents: 930
diff changeset
1105 if (n == 0) return 0;
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diff changeset
1106 if (n == 1) return 0 == cxTreeInsert(tree, data) ? 1 : 0;
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parents: 930
diff changeset
1107 CxIterator iter = cxIterator(data, elem_size, n);
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1108 return cxTreeInsertIter(tree, cxIteratorRef(iter), n);
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parents: 930
diff changeset
1109 }
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diff changeset
1110
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parents: 930
diff changeset
1111 /**
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parents: 930
diff changeset
1112 * Searches the data in the specified tree.
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parents: 930
diff changeset
1113 *
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parents: 930
diff changeset
1114 * \remark For this function to work, the tree needs a specified \c search_data
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1115 * function, which might not be available wrapped trees
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parents: 930
diff changeset
1116 * (see #cxTreeCreateWrapped()).
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parents: 930
diff changeset
1117 *
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diff changeset
1118 * @param tree the tree
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parents: 930
diff changeset
1119 * @param data the data to search for
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diff changeset
1120 * @return the first matching node, or \c NULL when the data cannot be found
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parents: 930
diff changeset
1121 */
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diff changeset
1122 cx_attr_nonnull
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diff changeset
1123 cx_attr_nodiscard
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diff changeset
1124 static inline void *cxTreeFind(
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diff changeset
1125 CxTree *tree,
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diff changeset
1126 const void *data
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diff changeset
1127 ) {
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diff changeset
1128 return tree->cl->find(tree, tree->root, data, 0);
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diff changeset
1129 }
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diff changeset
1130
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diff changeset
1131 /**
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diff changeset
1132 * Searches the data in the specified subtree.
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diff changeset
1133 *
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diff changeset
1134 * When \p max_depth is zero, the depth is not limited.
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diff changeset
1135 * The \p subtree_root itself is on depth 1 and its children have depth 2.
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diff changeset
1136 *
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diff changeset
1137 * \note When \p subtree_root is not part of the \p tree, the behavior is
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1138 * undefined.
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parents: 930
diff changeset
1139 *
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diff changeset
1140 * \remark For this function to work, the tree needs a specified \c search_data
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diff changeset
1141 * function, which might not be the case for wrapped trees
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parents: 930
diff changeset
1142 * (see #cxTreeCreateWrapped()).
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diff changeset
1143 *
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diff changeset
1144 * @param tree the tree
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diff changeset
1145 * @param data the data to search for
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diff changeset
1146 * @param subtree_root the node where to start
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diff changeset
1147 * @param max_depth the maximum search depth
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diff changeset
1148 * @return the first matching node, or \c NULL when the data cannot be found
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diff changeset
1149 */
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diff changeset
1150 cx_attr_nonnull
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diff changeset
1151 cx_attr_nodiscard
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diff changeset
1152 static inline void *cxTreeFindInSubtree(
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parents: 930
diff changeset
1153 CxTree *tree,
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parents: 930
diff changeset
1154 const void *data,
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diff changeset
1155 void *subtree_root,
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diff changeset
1156 size_t max_depth
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parents: 930
diff changeset
1157 ) {
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parents: 930
diff changeset
1158 return tree->cl->find(tree, subtree_root, data, max_depth);
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parents: 930
diff changeset
1159 }
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parents: 930
diff changeset
1160
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diff changeset
1161 /**
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parents: 930
diff changeset
1162 * Determines the size of the specified subtree.
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parents: 930
diff changeset
1163 *
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diff changeset
1164 * @param tree the tree
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parents: 930
diff changeset
1165 * @param subtree_root the root node of the subtree
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diff changeset
1166 * @return the number of nodes in the specified subtree
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parents: 930
diff changeset
1167 */
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diff changeset
1168 cx_attr_nonnull
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diff changeset
1169 cx_attr_nodiscard
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parents: 930
diff changeset
1170 size_t cxTreeSubtreeSize(CxTree *tree, void *subtree_root);
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1171
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1172 /**
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1173 * Determines the depth of the specified subtree.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1174 *
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1175 * @param tree the tree
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1176 * @param subtree_root the root node of the subtree
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1177 * @return the tree depth including the \p subtree_root
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1178 */
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1179 cx_attr_nonnull
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1180 cx_attr_nodiscard
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1181 size_t cxTreeSubtreeDepth(CxTree *tree, void *subtree_root);
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1182
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1183 /**
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1184 * Determines the depth of the entire tree.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1185 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1186 * @param tree the tree
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1187 * @return the tree depth, counting the root as one
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1188 */
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1189 cx_attr_nonnull
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1190 cx_attr_nodiscard
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1191 size_t cxTreeDepth(CxTree *tree);
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1192
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1193 /**
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1194 * Creates a depth-first iterator for the specified tree starting in \p node.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1195 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1196 * If the node is not part of the tree, the behavior is undefined.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1197 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1198 * @param tree the tree to iterate
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1199 * @param node the node where to start
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parents: 930
diff changeset
1200 * @param visit_on_exit true, if the iterator shall visit a node again when
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1201 * leaving the subtree
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1202 * @return a tree iterator (depth-first)
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1203 * @see cxTreeVisit()
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1204 */
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1205 cx_attr_nonnull
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1206 cx_attr_nodiscard
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1207 static inline CxTreeIterator cxTreeIterateSubtree(
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1208 CxTree *tree,
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1209 void *node,
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1210 bool visit_on_exit
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1211 ) {
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1212 return cx_tree_iterator(
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1213 node, visit_on_exit,
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1214 tree->loc_children, tree->loc_next
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1215 );
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1216 }
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1217
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1218 /**
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1219 * Creates a breadth-first iterator for the specified tree starting in \p node.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1220 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1221 * If the node is not part of the tree, the behavior is undefined.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1222 *
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1223 * @param tree the tree to iterate
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1224 * @param node the node where to start
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1225 * @return a tree visitor (a.k.a. breadth-first iterator)
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1226 * @see cxTreeIterate()
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1227 */
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1228 cx_attr_nonnull
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1229 cx_attr_nodiscard
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1230 static inline CxTreeVisitor cxTreeVisitSubtree(CxTree *tree, void *node) {
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1231 return cx_tree_visitor(
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1232 node, tree->loc_children, tree->loc_next
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1233 );
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1234 }
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1235
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1236 /**
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1237 * Creates a depth-first iterator for the specified tree.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1238 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1239 * @param tree the tree to iterate
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1240 * @param visit_on_exit true, if the iterator shall visit a node again when
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1241 * leaving the subtree
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1242 * @return a tree iterator (depth-first)
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1243 * @see cxTreeVisit()
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1244 */
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1245 cx_attr_nonnull
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1246 cx_attr_nodiscard
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1247 static inline CxTreeIterator cxTreeIterate(
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1248 CxTree *tree,
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1249 bool visit_on_exit
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1250 ) {
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1251 return cxTreeIterateSubtree(tree, tree->root, visit_on_exit);
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1252 }
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1253
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1254 /**
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1255 * Creates a breadth-first iterator for the specified tree.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1256 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1257 * @param tree the tree to iterate
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1258 * @return a tree visitor (a.k.a. breadth-first iterator)
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1259 * @see cxTreeIterate()
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1260 */
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1261 cx_attr_nonnull
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1262 cx_attr_nodiscard
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1263 static inline CxTreeVisitor cxTreeVisit(CxTree *tree) {
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1264 return cxTreeVisitSubtree(tree, tree->root);
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1265 }
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1266
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1267 /**
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Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1268 * Sets the (new) parent of the specified child.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1269 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1270 * If the \p child is not already member of the tree, this function behaves
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1271 * as #cxTreeAddChildNode().
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1272 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1273 * @param tree the tree
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1274 * @param parent the (new) parent of the child
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1275 * @param child the node to add
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1276 * @see cxTreeAddChildNode()
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1277 */
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1278 cx_attr_nonnull
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1279 void cxTreeSetParent(
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1280 CxTree *tree,
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1281 void *parent,
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1282 void *child
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1283 );
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1284
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1285 /**
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parents: 930
diff changeset
1286 * Adds a new node to the tree.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1287 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1288 * If the \p child is already member of the tree, the behavior is undefined.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1289 * Use #cxTreeSetParent() if you want to move a subtree to another location.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1290 *
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1291 * \attention The node may be externally created, but MUST obey the same rules
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1292 * as if it was created by the tree itself with #cxTreeAddChild() (e.g. use
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1293 * the same allocator).
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1294 *
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1295 * @param tree the tree
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1296 * @param parent the parent of the node to add
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1297 * @param child the node to add
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parents: 930
diff changeset
1298 * @see cxTreeSetParent()
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parents: 930
diff changeset
1299 */
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parents: 930
diff changeset
1300 cx_attr_nonnull
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parents: 930
diff changeset
1301 void cxTreeAddChildNode(
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1302 CxTree *tree,
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1303 void *parent,
68754c7de906 major refactoring of attributes
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diff changeset
1304 void *child
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1305 );
68754c7de906 major refactoring of attributes
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diff changeset
1306
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1307 /**
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parents: 930
diff changeset
1308 * Creates a new node and adds it to the tree.
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1309 *
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parents: 930
diff changeset
1310 * With this function you can decide where exactly the new node shall be added.
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1311 * If you specified an appropriate search function, you may want to consider
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1312 * leaving this task to the tree by using #cxTreeInsert().
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1313 *
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1314 * Be aware that adding nodes at arbitrary locations in the tree might cause
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1315 * wrong or undesired results when subsequently invoking #cxTreeInsert() and
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1316 * the invariant imposed by the search function does not hold any longer.
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1317 *
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1318 * @param tree the tree
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1319 * @param parent the parent node of the new node
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parents: 930
diff changeset
1320 * @param data the data that will be submitted to the create function
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diff changeset
1321 * @return zero when the new node was created, non-zero on allocation failure
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parents: 930
diff changeset
1322 * @see cxTreeInsert()
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parents: 930
diff changeset
1323 */
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parents: 930
diff changeset
1324 cx_attr_nonnull
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parents: 930
diff changeset
1325 int cxTreeAddChild(
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1326 CxTree *tree,
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1327 void *parent,
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1328 const void *data
68754c7de906 major refactoring of attributes
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parents: 930
diff changeset
1329 );
68754c7de906 major refactoring of attributes
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diff changeset
1330
68754c7de906 major refactoring of attributes
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diff changeset
1331 /**
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diff changeset
1332 * A function that is invoked when a node needs to be re-linked to a new parent.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
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diff changeset
1333 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
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diff changeset
1334 * When a node is re-linked, sometimes the contents need to be updated.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1335 * This callback is invoked by #cxTreeRemoveNode() and #cxTreeDestroyNode()
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1336 * so that those updates can be applied when re-linking the children of the
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1337 * removed node.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
parents: 930
diff changeset
1338 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
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diff changeset
1339 * @param node the affected node
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
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diff changeset
1340 * @param old_parent the old parent of the node
68754c7de906 major refactoring of attributes
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diff changeset
1341 * @param new_parent the new parent of the node
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Mike Becker <universe@uap-core.de>
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diff changeset
1342 */
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Mike Becker <universe@uap-core.de>
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diff changeset
1343 cx_attr_nonnull
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Mike Becker <universe@uap-core.de>
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diff changeset
1344 typedef void (*cx_tree_relink_func)(
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diff changeset
1345 void *node,
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diff changeset
1346 const void *old_parent,
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Mike Becker <universe@uap-core.de>
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diff changeset
1347 const void *new_parent
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
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diff changeset
1348 );
68754c7de906 major refactoring of attributes
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diff changeset
1349
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diff changeset
1350 /**
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diff changeset
1351 * Removes a node and re-links its children to its former parent.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
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diff changeset
1352 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
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diff changeset
1353 * If the node is not part of the tree, the behavior is undefined.
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
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diff changeset
1354 *
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
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diff changeset
1355 * \note The destructor function, if any, will \em not be invoked. That means
68754c7de906 major refactoring of attributes
Mike Becker <universe@uap-core.de>
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diff changeset
1356 * you will need to free the removed node by yourself, eventually.
68754c7de906 major refactoring of attributes
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diff changeset
1357 *
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diff changeset
1358 * @param tree the tree
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diff changeset
1359 * @param node the node to remove (must not be the root node)
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diff changeset
1360 * @param relink_func optional callback to update the content of each re-linked
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diff changeset
1361 * node
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diff changeset
1362 * @return zero on success, non-zero if \p node is the root node of the tree
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diff changeset
1363 */
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diff changeset
1364 cx_attr_nonnull_arg(1, 2)
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diff changeset
1365 int cxTreeRemoveNode(
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diff changeset
1366 CxTree *tree,
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diff changeset
1367 void *node,
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diff changeset
1368 cx_tree_relink_func relink_func
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diff changeset
1369 );
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1370
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1371 /**
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1372 * Removes a node and it's subtree from the tree.
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1373 *
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1374 * If the node is not part of the tree, the behavior is undefined.
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1375 *
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1376 * \note The destructor function, if any, will \em not be invoked. That means
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1377 * you will need to free the removed subtree by yourself, eventually.
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1378 *
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1379 * @param tree the tree
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1380 * @param node the node to remove
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1381 */
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1382 cx_attr_nonnull
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1383 void cxTreeRemoveSubtree(CxTree *tree, void *node);
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1384
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1385 /**
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1386 * Destroys a node and re-links its children to its former parent.
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1387 *
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1388 * If the node is not part of the tree, the behavior is undefined.
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1389 *
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1390 * It is guaranteed that the simple destructor is invoked before
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1391 * the advanced destructor.
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1392 *
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1393 * \attention This function will not free the memory of the node with the
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1394 * tree's allocator, because that is usually done by the advanced destructor
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diff changeset
1395 * and would therefore result in a double-free.
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1396 *
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1397 * @param tree the tree
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1398 * @param node the node to destroy (must not be the root node)
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1399 * @param relink_func optional callback to update the content of each re-linked
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1400 * node
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1401 * @return zero on success, non-zero if \p node is the root node of the tree
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1402 */
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1403 cx_attr_nonnull_arg(1, 2)
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1404 int cxTreeDestroyNode(
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1405 CxTree *tree,
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1406 void *node,
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1407 cx_tree_relink_func relink_func
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1408 );
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1409
816
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parents:
diff changeset
1410 #ifdef __cplusplus
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diff changeset
1411 } // extern "C"
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1412 #endif
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1413
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diff changeset
1414 #endif //UCX_TREE_H

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