src/linked_list.c

Mon, 29 Aug 2022 20:54:42 +0200

author
Mike Becker <universe@uap-core.de>
date
Mon, 29 Aug 2022 20:54:42 +0200
changeset 576
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parent 552
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child 592
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permissions
-rw-r--r--

first proposal for the string header

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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 2021 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 #include "cx/linked_list.h"
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30 #include "cx/utils.h"
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31 #include <stdint.h>
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32 #include <string.h>
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33 #include <assert.h>
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34
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35 /* LOW LEVEL LINKED LIST FUNCTIONS */
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36
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37 #define CX_LL_PTR(cur, off) (*(void**)(((char*)cur)+off))
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38 #define ll_prev(node) CX_LL_PTR(node, loc_prev)
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39 #define ll_next(node) CX_LL_PTR(node, loc_next)
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40 #define ll_advance(node) CX_LL_PTR(node, loc_advance)
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41 #define ll_data_f(node, follow_ptr) ((follow_ptr)?CX_LL_PTR(node, loc_data):(((char*)node)+loc_data))
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42 #define ll_data(node) ll_data_f(node,follow_ptr)
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43
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44 void *cx_linked_list_at(
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45 void const *start,
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46 size_t start_index,
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47 ptrdiff_t loc_advance,
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48 size_t index
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49 ) {
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50 assert(start != NULL);
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51 assert(loc_advance >= 0);
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52 size_t i = start_index;
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53 void const *cur = start;
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54 while (i != index && cur != NULL) {
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55 cur = ll_advance(cur);
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56 i < index ? i++ : i--;
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57 }
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58 return (void *) cur;
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59 }
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60
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61 size_t cx_linked_list_find(
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62 void const *start,
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63 ptrdiff_t loc_advance,
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64 ptrdiff_t loc_data,
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65 bool follow_ptr,
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66 CxListComparator cmp_func,
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67 void const *elem
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68 ) {
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69 assert(start != NULL);
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70 assert(loc_advance >= 0);
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71 assert(loc_data >= 0);
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72 assert(cmp_func);
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73
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74 void const *node = start;
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75 size_t index = 0;
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76 do {
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77 void *current = ll_data(node);
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78 if (cmp_func(current, elem) == 0) {
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79 return index;
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80 }
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81 node = ll_advance(node);
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82 index++;
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83 } while (node != NULL);
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84 return index;
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85 }
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86
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87 void *cx_linked_list_first(
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88 void const *node,
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89 ptrdiff_t loc_prev
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90 ) {
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91 return cx_linked_list_last(node, loc_prev);
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92 }
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93
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94 void *cx_linked_list_last(
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95 void const *node,
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96 ptrdiff_t loc_next
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97 ) {
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98 assert(node != NULL);
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99 assert(loc_next >= 0);
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100
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101 void const *cur = node;
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102 void const *last;
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103 do {
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104 last = cur;
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105 } while ((cur = ll_next(cur)) != NULL);
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106
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107 return (void *) last;
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108 }
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109
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110 void *cx_linked_list_prev(
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111 void const *begin,
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112 ptrdiff_t loc_next,
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113 void const *node
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114 ) {
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115 assert(begin != NULL);
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116 assert(node != NULL);
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117 assert(loc_next >= 0);
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118 if (begin == node) return NULL;
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119 void const *cur = begin;
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120 void const *next;
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121 while (1) {
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122 next = ll_next(cur);
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123 if (next == node) return (void *) cur;
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124 cur = next;
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125 }
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126 }
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127
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128 void cx_linked_list_link(
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129 void *left,
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130 void *right,
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131 ptrdiff_t loc_prev,
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132 ptrdiff_t loc_next
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133 ) {
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134 assert(loc_next >= 0);
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135 ll_next(left) = right;
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136 if (loc_prev >= 0) {
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137 ll_prev(right) = left;
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138 }
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139 }
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140
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141 void cx_linked_list_unlink(
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142 void *left,
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143 void *right,
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144 ptrdiff_t loc_prev,
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145 ptrdiff_t loc_next
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146 ) {
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147 assert (loc_next >= 0);
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148 assert(ll_next(left) == right);
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149 ll_next(left) = NULL;
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150 if (loc_prev >= 0) {
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151 assert(ll_prev(right) == left);
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152 ll_prev(right) = NULL;
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153 }
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154 }
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155
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156 void cx_linked_list_add(
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157 void **begin,
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158 void **end,
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159 ptrdiff_t loc_prev,
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160 ptrdiff_t loc_next,
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161 void *new_node
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162 ) {
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163 void *last;
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164 if (end == NULL) {
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165 assert(begin != NULL);
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166 last = *begin == NULL ? NULL : cx_linked_list_last(*begin, loc_next);
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167 } else {
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168 last = *end;
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169 }
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170 cx_linked_list_insert_chain(begin, end, loc_prev, loc_next, last, new_node, new_node);
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171 }
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172
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173 void cx_linked_list_prepend(
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174 void **begin,
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175 void **end,
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176 ptrdiff_t loc_prev,
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177 ptrdiff_t loc_next,
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178 void *new_node
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179 ) {
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180 cx_linked_list_insert_chain(begin, end, loc_prev, loc_next, NULL, new_node, new_node);
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181 }
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182
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183 void cx_linked_list_insert(
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184 void **begin,
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185 void **end,
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186 ptrdiff_t loc_prev,
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187 ptrdiff_t loc_next,
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188 void *node,
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189 void *new_node
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190 ) {
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191 cx_linked_list_insert_chain(begin, end, loc_prev, loc_next, node, new_node, new_node);
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192 }
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193
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194 void cx_linked_list_insert_chain(
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195 void **begin,
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196 void **end,
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197 ptrdiff_t loc_prev,
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198 ptrdiff_t loc_next,
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199 void *node,
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200 void *insert_begin,
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201 void *insert_end
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202 ) {
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203 // find the end of the chain, if not specified
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204 if (insert_end == NULL) {
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205 insert_end = cx_linked_list_last(insert_begin, loc_next);
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206 }
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207
481
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208 // determine the successor
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209 void *successor;
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210 if (node == NULL) {
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211 assert(begin != NULL || (end != NULL && loc_prev >= 0));
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212 if (begin != NULL) {
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213 successor = *begin;
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214 *begin = insert_begin;
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215 } else {
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216 successor = *end == NULL ? NULL : cx_linked_list_first(*end, loc_prev);
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217 }
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218 } else {
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219 successor = ll_next(node);
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220 cx_linked_list_link(node, insert_begin, loc_prev, loc_next);
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221 }
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222
481
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223 if (successor == NULL) {
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224 // the list ends with the new chain
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225 if (end != NULL) {
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226 *end = insert_end;
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227 }
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228 } else {
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229 cx_linked_list_link(insert_end, successor, loc_prev, loc_next);
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230 }
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231 }
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232
481
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233 void cx_linked_list_remove(
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234 void **begin,
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235 void **end,
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236 ptrdiff_t loc_prev,
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237 ptrdiff_t loc_next,
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238 void *node
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239 ) {
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240 assert(node != NULL);
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241 assert(loc_next >= 0);
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242 assert(loc_prev >= 0 || begin != NULL);
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243
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244 // find adjacent nodes
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245 void *next = ll_next(node);
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246 void *prev;
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247 if (loc_prev >= 0) {
480
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248 prev = ll_prev(node);
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249 } else {
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250 prev = cx_linked_list_prev(*begin, loc_next, node);
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251 }
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252
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253 // update next pointer of prev node, or set begin
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254 if (prev == NULL) {
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255 if (begin != NULL) {
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256 *begin = next;
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257 }
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258 } else {
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259 ll_next(prev) = next;
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260 }
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261
476
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262 // update prev pointer of next node, or set end
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263 if (next == NULL) {
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264 if (end != NULL) {
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265 *end = prev;
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266 }
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267 } else if (loc_prev >= 0) {
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268 ll_prev(next) = prev;
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269 }
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270 }
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271
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272 size_t cx_linked_list_size(
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273 void const *node,
481
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274 ptrdiff_t loc_next
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275 ) {
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276 assert(loc_next >= 0);
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277 size_t size = 0;
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278 while (node != NULL) {
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279 node = ll_next(node);
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280 size++;
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281 }
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282 return size;
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283 }
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284
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285 static void *cx_linked_list_sort_merge(
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286 ptrdiff_t loc_prev,
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287 ptrdiff_t loc_next,
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288 ptrdiff_t loc_data,
487
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289 bool follow_ptr,
481
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290 size_t length,
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291 void *ls,
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292 void *le,
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293 void *re,
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294 CxListComparator cmp_func
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295 ) {
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296 const size_t sbo_len = 1024;
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297 void *sbo[sbo_len];
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298 void **sorted = (length >= sbo_len) ? malloc(sizeof(void *) * length) : sbo;
508
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299 if (sorted == NULL) abort();
468
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300 void *rc, *lc;
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301
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302 lc = ls;
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303 rc = le;
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304 size_t n = 0;
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305 while (lc && lc != le && rc != re) {
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306 if (cmp_func(ll_data(lc), ll_data(rc)) <= 0) {
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307 sorted[n] = lc;
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308 lc = ll_next(lc);
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309 } else {
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310 sorted[n] = rc;
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311 rc = ll_next(rc);
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312 }
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313 n++;
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314 }
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315 while (lc && lc != le) {
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316 sorted[n] = lc;
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317 lc = ll_next(lc);
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318 n++;
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319 }
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320 while (rc && rc != re) {
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321 sorted[n] = rc;
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322 rc = ll_next(rc);
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323 n++;
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324 }
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325
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326 // Update pointer
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327 if (loc_prev >= 0) ll_prev(sorted[0]) = NULL;
509
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328 cx_for_n (i, length - 1) {
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329 cx_linked_list_link(sorted[i], sorted[i + 1], loc_prev, loc_next);
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330 }
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331 ll_next(sorted[length - 1]) = NULL;
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332
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333 void *ret = sorted[0];
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334 if (sorted != sbo) {
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335 free(sorted);
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336 }
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337 return ret;
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338 }
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339
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340 void cx_linked_list_sort( /* NOLINT(misc-no-recursion) - purposely recursive function */
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341 void **begin,
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342 void **end,
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343 ptrdiff_t loc_prev,
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344 ptrdiff_t loc_next,
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345 ptrdiff_t loc_data,
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346 bool follow_ptr,
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347 CxListComparator cmp_func
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348 ) {
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349 assert(begin != NULL);
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350 assert(loc_next >= 0);
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351 assert(loc_data >= 0);
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352 assert(cmp_func);
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353
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354 void *lc, *ls, *le, *re;
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355
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356 // set start node
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357 ls = *begin;
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358
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359 // check how many elements are already sorted
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360 lc = ls;
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361 size_t ln = 1;
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362 while (ll_next(lc) != NULL && cmp_func(ll_data(ll_next(lc)), ll_data(lc)) > 0) {
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363 lc = ll_next(lc);
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364 ln++;
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365 }
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366 le = ll_next(lc);
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367
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368 // if first unsorted node is NULL, the list is already completely sorted
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369 if (le != NULL) {
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370 void *rc;
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371 size_t rn = 1;
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372 rc = le;
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373 // skip already sorted elements
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374 while (ll_next(rc) != NULL && cmp_func(ll_data(ll_next(rc)), ll_data(rc)) > 0) {
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375 rc = ll_next(rc);
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376 rn++;
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377 }
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378 re = ll_next(rc);
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379
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380 // {ls,...,le->prev} and {rs,...,re->prev} are sorted - merge them
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381 void *sorted = cx_linked_list_sort_merge(loc_prev, loc_next, loc_data, follow_ptr,
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382 ln + rn, ls, le, re, cmp_func);
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383
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384 // Something left? Sort it!
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385 size_t remainder_length = cx_linked_list_size(re, loc_next);
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386 if (remainder_length > 0) {
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387 void *remainder = re;
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388 cx_linked_list_sort(&remainder, NULL, loc_prev, loc_next, loc_data, follow_ptr, cmp_func);
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389
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390 // merge sorted list with (also sorted) remainder
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391 *begin = cx_linked_list_sort_merge(loc_prev, loc_next, loc_data, follow_ptr,
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392 ln + rn + remainder_length,
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393 sorted, remainder, NULL, cmp_func);
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394 } else {
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395 // no remainder - we've got our sorted list
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396 *begin = sorted;
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397 }
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398 if (end) *end = cx_linked_list_last(sorted, loc_next);
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399 }
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400 }
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401
486
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402 int cx_linked_list_compare(
489
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403 void const *begin_left,
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404 void const *begin_right,
486
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405 ptrdiff_t loc_advance,
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406 ptrdiff_t loc_data,
552
4373c2a90066 #178 fix that lists of different kind cannot be compared
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407 bool follow_ptr_left,
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408 bool follow_ptr_right,
486
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409 CxListComparator cmp_func
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410 ) {
489
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diff changeset
411 void const *left = begin_left, *right = begin_right;
486
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diff changeset
412
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413 while (left != NULL && right != NULL) {
552
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diff changeset
414 void const *left_data = ll_data_f(left, follow_ptr_left);
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415 void const *right_data = ll_data_f(right, follow_ptr_right);
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diff changeset
416 int result = cmp_func(left_data, right_data);
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417 if (result != 0) return result;
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418 left = ll_advance(left);
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419 right = ll_advance(right);
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420 }
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421
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422 if (left != NULL) { return 1; }
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diff changeset
423 else if (right != NULL) { return -1; }
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424 else { return 0; }
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425 }
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426
481
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diff changeset
427 void cx_linked_list_reverse(
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428 void **begin,
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429 void **end,
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430 ptrdiff_t loc_prev,
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431 ptrdiff_t loc_next
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diff changeset
432 ) {
473
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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diff changeset
433 assert(begin != NULL);
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434 assert(loc_next >= 0);
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diff changeset
435
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436 // swap all links
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diff changeset
437 void *prev = NULL;
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diff changeset
438 void *cur = *begin;
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diff changeset
439 while (cur != NULL) {
480
e3be53a3354f add cx_linked_list_find()
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diff changeset
440 void *next = ll_next(cur);
473
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441
480
e3be53a3354f add cx_linked_list_find()
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diff changeset
442 ll_next(cur) = prev;
473
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diff changeset
443 if (loc_prev >= 0) {
480
e3be53a3354f add cx_linked_list_find()
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diff changeset
444 ll_prev(cur) = next;
473
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diff changeset
445 }
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diff changeset
446
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diff changeset
447 prev = cur;
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448 cur = next;
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449 }
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diff changeset
450
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diff changeset
451 // update begin and end
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diff changeset
452 if (end != NULL) {
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parents: 469
diff changeset
453 *end = *begin;
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
Mike Becker <universe@uap-core.de>
parents: 469
diff changeset
454 }
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
Mike Becker <universe@uap-core.de>
parents: 469
diff changeset
455 *begin = prev;
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
Mike Becker <universe@uap-core.de>
parents: 469
diff changeset
456 }
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
Mike Becker <universe@uap-core.de>
parents: 469
diff changeset
457
398
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
458 /* HIGH LEVEL LINKED LIST IMPLEMENTATION */
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
459
447
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
460 typedef struct cx_linked_list_node cx_linked_list_node;
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
461 struct cx_linked_list_node {
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
462 cx_linked_list_node *prev;
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
463 cx_linked_list_node *next;
403
8fa43b732980 use C99 flexible array to mark the node's payload
Mike Becker <universe@uap-core.de>
parents: 402
diff changeset
464 char payload[];
447
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
465 };
402
a34b93911956 use named fields to access node memory
Mike Becker <universe@uap-core.de>
parents: 401
diff changeset
466
446
668757098b73 remove unnecessary fields from linked list node and simplifies cx_ll_add()
Mike Becker <universe@uap-core.de>
parents: 441
diff changeset
467 #define CX_LL_LOC_PREV offsetof(cx_linked_list_node, prev)
668757098b73 remove unnecessary fields from linked list node and simplifies cx_ll_add()
Mike Becker <universe@uap-core.de>
parents: 441
diff changeset
468 #define CX_LL_LOC_NEXT offsetof(cx_linked_list_node, next)
469
0458bff0b1cd add high level list sort and inlines method invocation functions
Mike Becker <universe@uap-core.de>
parents: 468
diff changeset
469 #define CX_LL_LOC_DATA offsetof(cx_linked_list_node, payload)
439
9a5adedd6de6 add high-level function cxListAt()
Mike Becker <universe@uap-core.de>
parents: 438
diff changeset
470
398
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
471 typedef struct {
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
472 struct cx_list_s base;
446
668757098b73 remove unnecessary fields from linked list node and simplifies cx_ll_add()
Mike Becker <universe@uap-core.de>
parents: 441
diff changeset
473 cx_linked_list_node *begin;
668757098b73 remove unnecessary fields from linked list node and simplifies cx_ll_add()
Mike Becker <universe@uap-core.de>
parents: 441
diff changeset
474 cx_linked_list_node *end;
552
4373c2a90066 #178 fix that lists of different kind cannot be compared
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
475 bool follow_ptr;
398
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
476 } cx_linked_list;
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
477
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
478 static cx_linked_list_node *cx_ll_node_at(
489
af6be1e123aa add some const qualifiers
Mike Becker <universe@uap-core.de>
parents: 488
diff changeset
479 cx_linked_list const *list,
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
480 size_t index
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
481 ) {
447
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
482 if (index >= list->base.size) {
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
483 return NULL;
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
484 } else if (index > list->base.size / 2) {
468
75ae1dccd101 add cx_linked_list_sort()
Mike Becker <universe@uap-core.de>
parents: 467
diff changeset
485 return cx_linked_list_at(list->end, list->base.size - 1, CX_LL_LOC_PREV, index);
447
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
486 } else {
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
487 return cx_linked_list_at(list->begin, 0, CX_LL_LOC_NEXT, index);
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
488 }
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
489 }
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
490
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
491 static int cx_ll_insert_at(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
492 struct cx_list_s *list,
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
493 cx_linked_list_node *node,
489
af6be1e123aa add some const qualifiers
Mike Becker <universe@uap-core.de>
parents: 488
diff changeset
494 void const *elem
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
495 ) {
448
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
496
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
497 // create the new new_node
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
498 cx_linked_list_node *new_node = cxMalloc(list->allocator,
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
499 sizeof(cx_linked_list_node) + list->itemsize);
448
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
500
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
501 // sortir if failed
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
502 if (new_node == NULL) return 1;
448
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
503
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
504 // initialize new new_node
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
505 new_node->prev = new_node->next = NULL;
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
506 memcpy(new_node->payload, elem, list->itemsize);
448
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
507
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
508 // insert
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
509 cx_linked_list *ll = (cx_linked_list *) list;
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
510 cx_linked_list_insert_chain(
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
511 (void **) &ll->begin, (void **) &ll->end,
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
512 CX_LL_LOC_PREV, CX_LL_LOC_NEXT,
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
513 node, new_node, new_node
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
514 );
448
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
515
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
516 // increase the size and return
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
517 list->size++;
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
518 return 0;
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
519 }
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
520
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
521 static int cx_ll_insert(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
522 struct cx_list_s *list,
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
523 size_t index,
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
524 void const *elem
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
525 ) {
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
526 // out-of bounds check
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
527 if (index > list->size) return 1;
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
528
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
529 // find position efficiently
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
530 cx_linked_list_node *node = index == 0 ? NULL : cx_ll_node_at((cx_linked_list *) list, index - 1);
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
531
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
532 // perform insert
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
533 return cx_ll_insert_at(list, node, elem);
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
534 }
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
535
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
536 static int cx_ll_add(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
537 struct cx_list_s *list,
489
af6be1e123aa add some const qualifiers
Mike Becker <universe@uap-core.de>
parents: 488
diff changeset
538 void const *elem
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
539 ) {
448
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
540 return cx_ll_insert(list, list->size, elem);
398
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
541 }
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
542
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
543 static int cx_pll_insert(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
544 struct cx_list_s *list,
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
545 size_t index,
489
af6be1e123aa add some const qualifiers
Mike Becker <universe@uap-core.de>
parents: 488
diff changeset
546 void const *elem
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
547 ) {
466
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
548 return cx_ll_insert(list, index, &elem);
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
549 }
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
550
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
551 static int cx_pll_add(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
552 struct cx_list_s *list,
489
af6be1e123aa add some const qualifiers
Mike Becker <universe@uap-core.de>
parents: 488
diff changeset
553 void const *elem
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
554 ) {
466
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
555 return cx_ll_insert(list, list->size, &elem);
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
556 }
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
557
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
558 static int cx_ll_remove(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
559 struct cx_list_s *list,
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
560 size_t index
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
561 ) {
447
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
562 cx_linked_list *ll = (cx_linked_list *) list;
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
563 cx_linked_list_node *node = cx_ll_node_at(ll, index);
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
564
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
565 // out-of-bounds check
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
566 if (node == NULL) return 1;
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
567
476
60ff4561dc04 change contract of cx_linked_list_remove()
Mike Becker <universe@uap-core.de>
parents: 475
diff changeset
568 // remove
60ff4561dc04 change contract of cx_linked_list_remove()
Mike Becker <universe@uap-core.de>
parents: 475
diff changeset
569 cx_linked_list_remove((void **) &ll->begin, (void **) &ll->end,
60ff4561dc04 change contract of cx_linked_list_remove()
Mike Becker <universe@uap-core.de>
parents: 475
diff changeset
570 CX_LL_LOC_PREV, CX_LL_LOC_NEXT, node);
447
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
571
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
572 // adjust size
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
573 list->size--;
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
574
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
575 // free and return
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
576 cxFree(list->allocator, node);
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
577
438
cd3069757010 add function cx_linked_list_at()
Mike Becker <universe@uap-core.de>
parents: 437
diff changeset
578 return 0;
398
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
579 }
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
580
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
581 static void *cx_ll_at(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
582 struct cx_list_s const *list,
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
583 size_t index
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
584 ) {
439
9a5adedd6de6 add high-level function cxListAt()
Mike Becker <universe@uap-core.de>
parents: 438
diff changeset
585 cx_linked_list *ll = (cx_linked_list *) list;
447
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
586 cx_linked_list_node *node = cx_ll_node_at(ll, index);
466
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
587 return node == NULL ? NULL : node->payload;
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
588 }
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
589
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
590 static void *cx_pll_at(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
591 struct cx_list_s const *list,
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
592 size_t index
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
593 ) {
466
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
594 cx_linked_list *ll = (cx_linked_list *) list;
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
595 cx_linked_list_node *node = cx_ll_node_at(ll, index);
468
75ae1dccd101 add cx_linked_list_sort()
Mike Becker <universe@uap-core.de>
parents: 467
diff changeset
596 return node == NULL ? NULL : *(void **) node->payload;
439
9a5adedd6de6 add high-level function cxListAt()
Mike Becker <universe@uap-core.de>
parents: 438
diff changeset
597 }
9a5adedd6de6 add high-level function cxListAt()
Mike Becker <universe@uap-core.de>
parents: 438
diff changeset
598
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
599 static size_t cx_ll_find(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
600 struct cx_list_s const *list,
489
af6be1e123aa add some const qualifiers
Mike Becker <universe@uap-core.de>
parents: 488
diff changeset
601 void const *elem
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
602 ) {
552
4373c2a90066 #178 fix that lists of different kind cannot be compared
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
603 cx_linked_list *ll = (cx_linked_list *) list;
480
e3be53a3354f add cx_linked_list_find()
Mike Becker <universe@uap-core.de>
parents: 478
diff changeset
604 return cx_linked_list_find(((cx_linked_list *) list)->begin,
e3be53a3354f add cx_linked_list_find()
Mike Becker <universe@uap-core.de>
parents: 478
diff changeset
605 CX_LL_LOC_NEXT, CX_LL_LOC_DATA,
552
4373c2a90066 #178 fix that lists of different kind cannot be compared
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
606 ll->follow_ptr, list->cmpfunc, elem);
466
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
607 }
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
608
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
609 static void cx_ll_sort(struct cx_list_s *list) {
469
0458bff0b1cd add high level list sort and inlines method invocation functions
Mike Becker <universe@uap-core.de>
parents: 468
diff changeset
610 cx_linked_list *ll = (cx_linked_list *) list;
0458bff0b1cd add high level list sort and inlines method invocation functions
Mike Becker <universe@uap-core.de>
parents: 468
diff changeset
611 cx_linked_list_sort((void **) &ll->begin, (void **) &ll->end,
0458bff0b1cd add high level list sort and inlines method invocation functions
Mike Becker <universe@uap-core.de>
parents: 468
diff changeset
612 CX_LL_LOC_PREV, CX_LL_LOC_NEXT, CX_LL_LOC_DATA,
552
4373c2a90066 #178 fix that lists of different kind cannot be compared
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
613 ll->follow_ptr, list->cmpfunc);
469
0458bff0b1cd add high level list sort and inlines method invocation functions
Mike Becker <universe@uap-core.de>
parents: 468
diff changeset
614 }
0458bff0b1cd add high level list sort and inlines method invocation functions
Mike Becker <universe@uap-core.de>
parents: 468
diff changeset
615
500
eb9e7bd40a8e do not hide pointers behind typedefs
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parents: 499
diff changeset
616 static void cx_ll_reverse(struct cx_list_s *list) {
490
e66551b47466 add cxListReverse()
Mike Becker <universe@uap-core.de>
parents: 489
diff changeset
617 cx_linked_list *ll = (cx_linked_list *) list;
521
e5dc54131d55 add test for cxListCompare
Mike Becker <universe@uap-core.de>
parents: 509
diff changeset
618 cx_linked_list_reverse((void **) &ll->begin, (void **) &ll->end, CX_LL_LOC_PREV, CX_LL_LOC_NEXT);
490
e66551b47466 add cxListReverse()
Mike Becker <universe@uap-core.de>
parents: 489
diff changeset
619 }
e66551b47466 add cxListReverse()
Mike Becker <universe@uap-core.de>
parents: 489
diff changeset
620
488
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
621 static int cx_ll_compare(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
622 struct cx_list_s const *list,
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
623 struct cx_list_s const *other
488
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
624 ) {
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
625 cx_linked_list *left = (cx_linked_list *) list;
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
626 cx_linked_list *right = (cx_linked_list *) other;
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
627 return cx_linked_list_compare(left->begin, right->begin,
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
628 CX_LL_LOC_NEXT, CX_LL_LOC_DATA,
552
4373c2a90066 #178 fix that lists of different kind cannot be compared
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
629 left->follow_ptr, right->follow_ptr, list->cmpfunc);
488
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
630 }
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
631
494
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
632 static bool cx_ll_iter_valid(CxIterator const *iter) {
495
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
633 return iter->elem_handle != NULL;
494
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
634 }
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
635
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
636 static void cx_ll_iter_next(CxIterator *iter) {
495
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
637 if (iter->remove) {
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
638 iter->remove = false;
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
639 cx_linked_list *ll = iter->src_handle;
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
640 cx_linked_list_node *node = iter->elem_handle;
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
641 iter->elem_handle = node->next;
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
642 cx_linked_list_remove((void **) &ll->begin, (void **) &ll->end,
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
643 CX_LL_LOC_PREV, CX_LL_LOC_NEXT, node);
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
644 ll->base.size--;
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
645 cxFree(ll->base.allocator, node);
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
646 } else {
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
647 iter->index++;
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
648 cx_linked_list_node *node = iter->elem_handle;
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
649 iter->elem_handle = node->next;
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
650 }
494
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
651 }
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
652
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
653 static void *cx_ll_iter_current(CxIterator const *iter) {
495
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
654 cx_linked_list_node *node = iter->elem_handle;
494
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
655 return node->payload;
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
656 }
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
657
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
658 static void *cx_pll_iter_current(CxIterator const *iter) {
495
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
659 cx_linked_list_node *node = iter->elem_handle;
494
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
660 return *(void **) node->payload;
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
661 }
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
662
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
663 static CxIterator cx_ll_iterator(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
664 struct cx_list_s *list,
494
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
665 size_t index
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
666 ) {
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
667 CxIterator iter;
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
668 iter.index = index;
495
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
669 iter.src_handle = list;
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
670 iter.elem_handle = cx_ll_node_at((cx_linked_list const *) list, index);
494
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
671 iter.valid = cx_ll_iter_valid;
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
672 iter.current = cx_ll_iter_current;
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
673 iter.next = cx_ll_iter_next;
495
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
674 iter.remove = false;
494
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
675 return iter;
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
676 }
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
677
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
678 static CxIterator cx_pll_iterator(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
679 struct cx_list_s *list,
494
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
680 size_t index
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
681 ) {
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
682 CxIterator iter = cx_ll_iterator(list, index);
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
683 iter.current = cx_pll_iter_current;
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
684 return iter;
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
685 }
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
686
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
687 static int cx_ll_insert_iter(
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
688 CxIterator *iter,
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
689 void const *elem,
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
690 int prepend
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
691 ) {
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
692 struct cx_list_s *list = iter->src_handle;
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
693 cx_linked_list_node *node = iter->elem_handle;
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
694 if (node != NULL) {
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
695 assert(prepend >= 0 && prepend <= 1);
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
696 cx_linked_list_node *choice[2] = {node, node->prev};
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
697 int result = cx_ll_insert_at(list, choice[prepend], elem);
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
698 iter->index += prepend * (0 == result);
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
699 return result;
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
700 } else {
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
701 int result = cx_ll_insert(list, list->size, elem);
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
702 iter->index = list->size;
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
703 return result;
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
704 }
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
705 }
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
706
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
707 static int cx_pll_insert_iter(
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
708 CxIterator *iter,
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
709 void const *elem,
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
710 int prepend
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
711 ) {
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
712 return cx_ll_insert_iter(iter, &elem, prepend);
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
713 }
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
714
524
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
715 static void cx_ll_destructor(CxList *list) {
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
716 cx_linked_list *ll = (cx_linked_list *) list;
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
717
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
718 cx_linked_list_node *node = ll->begin;
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
719 while (node) {
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
720 void *next = node->next;
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
721 cxFree(list->allocator, node);
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
722 node = next;
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
723 }
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
724 // do not free the list pointer, this is just a destructor!
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
725 }
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
726
451
db06dda7ac4d make cx_linked_list_class static
Mike Becker <universe@uap-core.de>
parents: 448
diff changeset
727 static cx_list_class cx_linked_list_class = {
524
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
728 cx_ll_destructor,
398
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
729 cx_ll_add,
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
730 cx_ll_insert,
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
731 cx_ll_insert_iter,
398
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
732 cx_ll_remove,
439
9a5adedd6de6 add high-level function cxListAt()
Mike Becker <universe@uap-core.de>
parents: 438
diff changeset
733 cx_ll_at,
404
86ebc3745e62 adds cxListLast
Mike Becker <universe@uap-core.de>
parents: 403
diff changeset
734 cx_ll_find,
488
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
735 cx_ll_sort,
490
e66551b47466 add cxListReverse()
Mike Becker <universe@uap-core.de>
parents: 489
diff changeset
736 cx_ll_compare,
494
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
737 cx_ll_reverse,
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
738 cx_ll_iterator
398
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
739 };
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
740
466
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
741 static cx_list_class cx_pointer_linked_list_class = {
524
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
742 cx_ll_destructor,
466
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
743 cx_pll_add,
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
744 cx_pll_insert,
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
745 cx_pll_insert_iter,
466
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
746 cx_ll_remove,
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
747 cx_pll_at,
552
4373c2a90066 #178 fix that lists of different kind cannot be compared
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
748 cx_ll_find,
4373c2a90066 #178 fix that lists of different kind cannot be compared
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
749 cx_ll_sort,
4373c2a90066 #178 fix that lists of different kind cannot be compared
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
750 cx_ll_compare,
494
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
751 cx_ll_reverse,
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
752 cx_pll_iterator,
466
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
753 };
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Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
754
500
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parents: 499
diff changeset
755 CxList *cxLinkedListCreate(
508
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parents: 503
diff changeset
756 CxAllocator const *allocator,
481
eef025d82a34 add several new linked list functions
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parents: 480
diff changeset
757 CxListComparator comparator,
eef025d82a34 add several new linked list functions
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parents: 480
diff changeset
758 size_t item_size
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
759 ) {
503
a89857072ace add new destructor API and apply it to CxList
Mike Becker <universe@uap-core.de>
parents: 500
diff changeset
760 cx_linked_list *list = cxCalloc(allocator, 1, sizeof(cx_linked_list));
528
4fbfac557df8 #179 improve API for list content destruction
Mike Becker <universe@uap-core.de>
parents: 524
diff changeset
761 if (list == NULL) return NULL;
398
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
762
552
4373c2a90066 #178 fix that lists of different kind cannot be compared
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
763 list->follow_ptr = false;
435
0fe204d50f54 change inheritance model for lists
Mike Becker <universe@uap-core.de>
parents: 428
diff changeset
764 list->base.cl = &cx_linked_list_class;
0fe204d50f54 change inheritance model for lists
Mike Becker <universe@uap-core.de>
parents: 428
diff changeset
765 list->base.allocator = allocator;
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Mike Becker <universe@uap-core.de>
parents: 428
diff changeset
766 list->base.cmpfunc = comparator;
0fe204d50f54 change inheritance model for lists
Mike Becker <universe@uap-core.de>
parents: 428
diff changeset
767 list->base.itemsize = item_size;
0fe204d50f54 change inheritance model for lists
Mike Becker <universe@uap-core.de>
parents: 428
diff changeset
768 list->base.capacity = SIZE_MAX;
406
9cbea761fbf7 adds cxLinkedListWrap and cxLinkedListRecalculateSize
Mike Becker <universe@uap-core.de>
parents: 404
diff changeset
769
500
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parents: 499
diff changeset
770 return (CxList *) list;
406
9cbea761fbf7 adds cxLinkedListWrap and cxLinkedListRecalculateSize
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parents: 404
diff changeset
771 }
9cbea761fbf7 adds cxLinkedListWrap and cxLinkedListRecalculateSize
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parents: 404
diff changeset
772
500
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parents: 499
diff changeset
773 CxList *cxPointerLinkedListCreate(
508
8aea65ae1eaf #168 - add attributes and const
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parents: 503
diff changeset
774 CxAllocator const *allocator,
481
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Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
775 CxListComparator comparator
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Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
776 ) {
503
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parents: 500
diff changeset
777 cx_linked_list *list = cxCalloc(allocator, 1, sizeof(cx_linked_list));
528
4fbfac557df8 #179 improve API for list content destruction
Mike Becker <universe@uap-core.de>
parents: 524
diff changeset
778 if (list == NULL) return NULL;
466
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
779
552
4373c2a90066 #178 fix that lists of different kind cannot be compared
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
780 list->follow_ptr = true;
466
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
781 list->base.cl = &cx_pointer_linked_list_class;
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Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
782 list->base.allocator = allocator;
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Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
783 list->base.cmpfunc = comparator;
468
75ae1dccd101 add cx_linked_list_sort()
Mike Becker <universe@uap-core.de>
parents: 467
diff changeset
784 list->base.itemsize = sizeof(void *);
466
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
785 list->base.capacity = SIZE_MAX;
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parents: 457
diff changeset
786
500
eb9e7bd40a8e do not hide pointers behind typedefs
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parents: 499
diff changeset
787 return (CxList *) list;
466
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
788 }
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
789
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
790 CxList *cxLinkedListFromArray(
508
8aea65ae1eaf #168 - add attributes and const
Mike Becker <universe@uap-core.de>
parents: 503
diff changeset
791 CxAllocator const *allocator,
488
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
792 CxListComparator comparator,
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
793 size_t item_size,
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
794 size_t num_items,
489
af6be1e123aa add some const qualifiers
Mike Becker <universe@uap-core.de>
parents: 488
diff changeset
795 void const *array
488
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
796 ) {
500
eb9e7bd40a8e do not hide pointers behind typedefs
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parents: 499
diff changeset
797 CxList *list = cxLinkedListCreate(allocator, comparator, item_size);
488
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
798 if (list == NULL) return NULL;
509
0d3c6075f82c #129 - remove test code duplication
Mike Becker <universe@uap-core.de>
parents: 508
diff changeset
799 cx_for_n (i, num_items) {
488
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
800 if (0 != cxListAdd(list, ((const unsigned char *) array) + i * item_size)) {
524
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
801 cx_ll_destructor(list);
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
802 cxFree(allocator, list);
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
803 return NULL;
488
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
804 }
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
805 }
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
806 return list;
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
807 }

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