src/linked_list.c

Tue, 07 Feb 2023 21:37:55 +0100

author
Mike Becker <universe@uap-core.de>
date
Tue, 07 Feb 2023 21:37:55 +0100
changeset 651
19d1a8422f6e
parent 650
77021e06b1a8
child 654
c9d008861178
permissions
-rw-r--r--

fix last change of mul overflow builtin breaking non-windows compilations

now we use the generic builtin and leave the type resolution to the compiler

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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 <string.h>
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32 #include <assert.h>
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33
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34 // LOW LEVEL LINKED LIST FUNCTIONS
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35
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36 #define CX_LL_PTR(cur, off) (*(void**)(((char*)(cur))+(off)))
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37 #define ll_prev(node) CX_LL_PTR(node, loc_prev)
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38 #define ll_next(node) CX_LL_PTR(node, loc_next)
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39 #define ll_advance(node) CX_LL_PTR(node, loc_advance)
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40 #define ll_data(node) (((char*)(node))+loc_data)
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41
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42 void *cx_linked_list_at(
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43 void const *start,
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44 size_t start_index,
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45 ptrdiff_t loc_advance,
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46 size_t index
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47 ) {
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48 assert(start != NULL);
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49 assert(loc_advance >= 0);
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50 size_t i = start_index;
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51 void const *cur = start;
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52 while (i != index && cur != NULL) {
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53 cur = ll_advance(cur);
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54 i < index ? i++ : i--;
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55 }
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56 return (void *) cur;
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57 }
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58
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59 size_t cx_linked_list_find(
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60 void const *start,
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61 ptrdiff_t loc_advance,
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62 ptrdiff_t loc_data,
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63 CxListComparator cmp_func,
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64 void const *elem
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65 ) {
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66 assert(start != NULL);
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67 assert(loc_advance >= 0);
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68 assert(loc_data >= 0);
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69 assert(cmp_func);
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70
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71 void const *node = start;
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72 size_t index = 0;
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73 do {
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74 void *current = ll_data(node);
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75 if (cmp_func(current, elem) == 0) {
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76 return index;
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77 }
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78 node = ll_advance(node);
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79 index++;
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80 } while (node != NULL);
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81 return index;
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82 }
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83
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84 void *cx_linked_list_first(
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85 void const *node,
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86 ptrdiff_t loc_prev
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87 ) {
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88 return cx_linked_list_last(node, loc_prev);
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89 }
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90
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91 void *cx_linked_list_last(
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92 void const *node,
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93 ptrdiff_t loc_next
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94 ) {
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95 assert(node != NULL);
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96 assert(loc_next >= 0);
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97
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98 void const *cur = node;
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99 void const *last;
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100 do {
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101 last = cur;
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102 } while ((cur = ll_next(cur)) != NULL);
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103
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104 return (void *) last;
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105 }
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106
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107 void *cx_linked_list_prev(
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108 void const *begin,
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109 ptrdiff_t loc_next,
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110 void const *node
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111 ) {
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112 assert(begin != NULL);
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113 assert(node != NULL);
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114 assert(loc_next >= 0);
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115 if (begin == node) return NULL;
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116 void const *cur = begin;
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117 void const *next;
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118 while (1) {
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119 next = ll_next(cur);
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120 if (next == node) return (void *) cur;
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121 cur = next;
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122 }
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123 }
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124
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125 void cx_linked_list_link(
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126 void *left,
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127 void *right,
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128 ptrdiff_t loc_prev,
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129 ptrdiff_t loc_next
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130 ) {
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131 assert(loc_next >= 0);
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132 ll_next(left) = right;
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133 if (loc_prev >= 0) {
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134 ll_prev(right) = left;
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135 }
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136 }
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137
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138 void cx_linked_list_unlink(
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139 void *left,
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140 void *right,
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141 ptrdiff_t loc_prev,
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142 ptrdiff_t loc_next
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143 ) {
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144 assert (loc_next >= 0);
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145 assert(ll_next(left) == right);
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146 ll_next(left) = NULL;
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147 if (loc_prev >= 0) {
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148 assert(ll_prev(right) == left);
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149 ll_prev(right) = NULL;
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150 }
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151 }
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152
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153 void cx_linked_list_add(
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154 void **begin,
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155 void **end,
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156 ptrdiff_t loc_prev,
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157 ptrdiff_t loc_next,
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158 void *new_node
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159 ) {
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160 void *last;
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161 if (end == NULL) {
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162 assert(begin != NULL);
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163 last = *begin == NULL ? NULL : cx_linked_list_last(*begin, loc_next);
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164 } else {
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165 last = *end;
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166 }
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167 cx_linked_list_insert_chain(begin, end, loc_prev, loc_next, last, new_node, new_node);
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168 }
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169
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170 void cx_linked_list_prepend(
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171 void **begin,
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172 void **end,
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173 ptrdiff_t loc_prev,
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174 ptrdiff_t loc_next,
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175 void *new_node
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176 ) {
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177 cx_linked_list_insert_chain(begin, end, loc_prev, loc_next, NULL, new_node, new_node);
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178 }
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179
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180 void cx_linked_list_insert(
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181 void **begin,
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182 void **end,
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183 ptrdiff_t loc_prev,
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184 ptrdiff_t loc_next,
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185 void *node,
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186 void *new_node
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187 ) {
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188 cx_linked_list_insert_chain(begin, end, loc_prev, loc_next, node, new_node, new_node);
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189 }
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190
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191 void cx_linked_list_insert_chain(
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192 void **begin,
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193 void **end,
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194 ptrdiff_t loc_prev,
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195 ptrdiff_t loc_next,
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196 void *node,
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197 void *insert_begin,
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198 void *insert_end
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199 ) {
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200 // find the end of the chain, if not specified
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201 if (insert_end == NULL) {
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202 insert_end = cx_linked_list_last(insert_begin, loc_next);
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203 }
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204
481
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205 // determine the successor
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206 void *successor;
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207 if (node == NULL) {
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208 assert(begin != NULL || (end != NULL && loc_prev >= 0));
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209 if (begin != NULL) {
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210 successor = *begin;
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211 *begin = insert_begin;
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212 } else {
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213 successor = *end == NULL ? NULL : cx_linked_list_first(*end, loc_prev);
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214 }
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215 } else {
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216 successor = ll_next(node);
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217 cx_linked_list_link(node, insert_begin, loc_prev, loc_next);
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218 }
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219
481
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220 if (successor == NULL) {
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221 // the list ends with the new chain
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222 if (end != NULL) {
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223 *end = insert_end;
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224 }
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225 } else {
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226 cx_linked_list_link(insert_end, successor, loc_prev, loc_next);
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227 }
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228 }
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229
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230 void cx_linked_list_remove(
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231 void **begin,
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232 void **end,
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233 ptrdiff_t loc_prev,
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234 ptrdiff_t loc_next,
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235 void *node
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236 ) {
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237 assert(node != NULL);
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238 assert(loc_next >= 0);
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239 assert(loc_prev >= 0 || begin != NULL);
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240
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241 // find adjacent nodes
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242 void *next = ll_next(node);
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243 void *prev;
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244 if (loc_prev >= 0) {
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245 prev = ll_prev(node);
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246 } else {
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247 prev = cx_linked_list_prev(*begin, loc_next, node);
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248 }
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249
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250 // update next pointer of prev node, or set begin
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251 if (prev == NULL) {
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252 if (begin != NULL) {
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253 *begin = next;
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254 }
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255 } else {
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256 ll_next(prev) = next;
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257 }
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258
476
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259 // update prev pointer of next node, or set end
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260 if (next == NULL) {
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261 if (end != NULL) {
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262 *end = prev;
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263 }
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264 } else if (loc_prev >= 0) {
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265 ll_prev(next) = prev;
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266 }
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267 }
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268
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269 size_t cx_linked_list_size(
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270 void const *node,
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271 ptrdiff_t loc_next
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272 ) {
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273 assert(loc_next >= 0);
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274 size_t size = 0;
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275 while (node != NULL) {
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276 node = ll_next(node);
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277 size++;
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278 }
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279 return size;
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280 }
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281
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282 static void *cx_linked_list_sort_merge(
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283 ptrdiff_t loc_prev,
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284 ptrdiff_t loc_next,
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285 ptrdiff_t loc_data,
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286 size_t length,
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287 void *ls,
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288 void *le,
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289 void *re,
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290 CxListComparator cmp_func
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291 ) {
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292 const size_t sbo_len = 1024;
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293 void *sbo[sbo_len];
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294 void **sorted = (length >= sbo_len) ? malloc(sizeof(void *) * length) : sbo;
508
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295 if (sorted == NULL) abort();
468
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296 void *rc, *lc;
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297
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298 lc = ls;
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299 rc = le;
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300 size_t n = 0;
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301 while (lc && lc != le && rc != re) {
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302 if (cmp_func(ll_data(lc), ll_data(rc)) <= 0) {
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303 sorted[n] = lc;
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304 lc = ll_next(lc);
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305 } else {
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306 sorted[n] = rc;
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307 rc = ll_next(rc);
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308 }
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309 n++;
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310 }
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311 while (lc && lc != le) {
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312 sorted[n] = lc;
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313 lc = ll_next(lc);
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314 n++;
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315 }
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316 while (rc && rc != re) {
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317 sorted[n] = rc;
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318 rc = ll_next(rc);
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319 n++;
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320 }
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321
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322 // Update pointer
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323 if (loc_prev >= 0) ll_prev(sorted[0]) = NULL;
509
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324 cx_for_n (i, length - 1) {
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325 cx_linked_list_link(sorted[i], sorted[i + 1], loc_prev, loc_next);
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326 }
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327 ll_next(sorted[length - 1]) = NULL;
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328
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329 void *ret = sorted[0];
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330 if (sorted != sbo) {
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331 free(sorted);
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332 }
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333 return ret;
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334 }
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335
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336 void cx_linked_list_sort( // NOLINT(misc-no-recursion) - purposely recursive function
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337 void **begin,
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338 void **end,
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339 ptrdiff_t loc_prev,
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340 ptrdiff_t loc_next,
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341 ptrdiff_t loc_data,
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342 CxListComparator cmp_func
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343 ) {
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344 assert(begin != NULL);
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345 assert(loc_next >= 0);
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346 assert(loc_data >= 0);
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347 assert(cmp_func);
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348
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349 void *lc, *ls, *le, *re;
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350
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351 // set start node
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352 ls = *begin;
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353
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354 // check how many elements are already sorted
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355 lc = ls;
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356 size_t ln = 1;
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357 while (ll_next(lc) != NULL && cmp_func(ll_data(ll_next(lc)), ll_data(lc)) > 0) {
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358 lc = ll_next(lc);
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359 ln++;
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360 }
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361 le = ll_next(lc);
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362
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363 // if first unsorted node is NULL, the list is already completely sorted
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364 if (le != NULL) {
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365 void *rc;
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366 size_t rn = 1;
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367 rc = le;
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368 // skip already sorted elements
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369 while (ll_next(rc) != NULL && cmp_func(ll_data(ll_next(rc)), ll_data(rc)) > 0) {
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370 rc = ll_next(rc);
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371 rn++;
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372 }
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373 re = ll_next(rc);
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374
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375 // {ls,...,le->prev} and {rs,...,re->prev} are sorted - merge them
639
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376 void *sorted = cx_linked_list_sort_merge(loc_prev, loc_next, loc_data,
468
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377 ln + rn, ls, le, re, cmp_func);
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378
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379 // Something left? Sort it!
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380 size_t remainder_length = cx_linked_list_size(re, loc_next);
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381 if (remainder_length > 0) {
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382 void *remainder = re;
639
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383 cx_linked_list_sort(&remainder, NULL, loc_prev, loc_next, loc_data, cmp_func);
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384
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385 // merge sorted list with (also sorted) remainder
639
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386 *begin = cx_linked_list_sort_merge(loc_prev, loc_next, loc_data,
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387 ln + rn + remainder_length,
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388 sorted, remainder, NULL, cmp_func);
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389 } else {
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390 // no remainder - we've got our sorted list
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391 *begin = sorted;
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392 }
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393 if (end) *end = cx_linked_list_last(sorted, loc_next);
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394 }
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395 }
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396
486
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397 int cx_linked_list_compare(
489
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398 void const *begin_left,
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399 void const *begin_right,
486
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400 ptrdiff_t loc_advance,
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401 ptrdiff_t loc_data,
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402 CxListComparator cmp_func
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403 ) {
489
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diff changeset
404 void const *left = begin_left, *right = begin_right;
486
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diff changeset
405
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diff changeset
406 while (left != NULL && right != NULL) {
639
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diff changeset
407 void const *left_data = ll_data(left);
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408 void const *right_data = ll_data(right);
552
4373c2a90066 #178 fix that lists of different kind cannot be compared
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diff changeset
409 int result = cmp_func(left_data, right_data);
486
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diff changeset
410 if (result != 0) return result;
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411 left = ll_advance(left);
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412 right = ll_advance(right);
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413 }
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414
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415 if (left != NULL) { return 1; }
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416 else if (right != NULL) { return -1; }
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diff changeset
417 else { return 0; }
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418 }
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419
481
eef025d82a34 add several new linked list functions
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420 void cx_linked_list_reverse(
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diff changeset
421 void **begin,
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422 void **end,
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423 ptrdiff_t loc_prev,
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diff changeset
424 ptrdiff_t loc_next
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diff changeset
425 ) {
473
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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diff changeset
426 assert(begin != NULL);
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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diff changeset
427 assert(loc_next >= 0);
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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428
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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diff changeset
429 // swap all links
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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diff changeset
430 void *prev = NULL;
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diff changeset
431 void *cur = *begin;
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diff changeset
432 while (cur != NULL) {
480
e3be53a3354f add cx_linked_list_find()
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diff changeset
433 void *next = ll_next(cur);
473
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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diff changeset
434
480
e3be53a3354f add cx_linked_list_find()
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diff changeset
435 ll_next(cur) = prev;
473
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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diff changeset
436 if (loc_prev >= 0) {
480
e3be53a3354f add cx_linked_list_find()
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diff changeset
437 ll_prev(cur) = next;
473
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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diff changeset
438 }
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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diff changeset
439
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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diff changeset
440 prev = cur;
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diff changeset
441 cur = next;
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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diff changeset
442 }
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diff changeset
443
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diff changeset
444 // update begin and end
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diff changeset
445 if (end != NULL) {
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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diff changeset
446 *end = *begin;
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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diff changeset
447 }
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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diff changeset
448 *begin = prev;
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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diff changeset
449 }
1bd4b8c28722 add cx_linked_list_{prev, remove, reverse}
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diff changeset
450
628
1e2be40f0cb5 use //-style single line comments everywhere
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451 // HIGH LEVEL LINKED LIST IMPLEMENTATION
398
8d506ed6c1c0 adds first draft for linked list implementation
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parents:
diff changeset
452
447
87b2cdd668ed implement cx_ll_remove()
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parents: 446
diff changeset
453 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
454 struct cx_linked_list_node {
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
455 cx_linked_list_node *prev;
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
456 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
457 char payload[];
447
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
458 };
402
a34b93911956 use named fields to access node memory
Mike Becker <universe@uap-core.de>
parents: 401
diff changeset
459
446
668757098b73 remove unnecessary fields from linked list node and simplifies cx_ll_add()
Mike Becker <universe@uap-core.de>
parents: 441
diff changeset
460 #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
461 #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
462 #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
463
398
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
464 typedef struct {
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
465 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
466 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
467 cx_linked_list_node *end;
398
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
468 } cx_linked_list;
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
469
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
470 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
471 cx_linked_list const *list,
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
472 size_t index
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
473 ) {
447
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
474 if (index >= list->base.size) {
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
475 return NULL;
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
476 } else if (index > list->base.size / 2) {
468
75ae1dccd101 add cx_linked_list_sort()
Mike Becker <universe@uap-core.de>
parents: 467
diff changeset
477 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
478 } else {
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
479 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
480 }
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
481 }
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
482
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
483 static int cx_ll_insert_at(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
484 struct cx_list_s *list,
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
485 cx_linked_list_node *node,
489
af6be1e123aa add some const qualifiers
Mike Becker <universe@uap-core.de>
parents: 488
diff changeset
486 void const *elem
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
487 ) {
448
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
488
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
489 // create the new new_node
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
490 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
491 sizeof(cx_linked_list_node) + list->itemsize);
448
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
492
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
493 // sortir if failed
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
494 if (new_node == NULL) return 1;
448
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
495
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
496 // initialize new new_node
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
497 new_node->prev = new_node->next = NULL;
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
498 memcpy(new_node->payload, elem, list->itemsize);
448
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
499
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
500 // insert
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
501 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
502 cx_linked_list_insert_chain(
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
503 (void **) &ll->begin, (void **) &ll->end,
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
504 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
505 node, new_node, new_node
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
506 );
448
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
507
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
508 // increase the size and return
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
509 list->size++;
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
510 return 0;
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
511 }
37c5d2fdb36b implement cx_ll_insert()
Mike Becker <universe@uap-core.de>
parents: 447
diff changeset
512
638
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
513 static size_t cx_ll_insert_array(
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
514 struct cx_list_s *list,
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
515 size_t index,
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
516 void const *array,
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
517 size_t n
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
518 ) {
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
519 // out-of bounds and corner case check
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
520 if (index > list->size || n == 0) return 0;
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
521
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
522 // find position efficiently
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
523 cx_linked_list_node *node = index == 0 ? NULL : cx_ll_node_at((cx_linked_list *) list, index - 1);
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
524
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
525 // perform first insert
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
526 if (0 != cx_ll_insert_at(list, node, array)) {
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
527 return 1;
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
528 }
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
529
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
530 // is there more?
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
531 if (n == 1) return 1;
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
532
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
533 // we now know exactly where we are
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
534 node = node == NULL ? ((cx_linked_list *) list)->begin : node->next;
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
535
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
536 // we can add the remaining nodes and immedately advance to the inserted node
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
537 char const *source = array;
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
538 for (size_t i = 1; i < n; i++) {
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
539 source += list->itemsize;
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
540 if (0 != cx_ll_insert_at(list, node, source)) {
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
541 return i;
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
542 }
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
543 node = node->next;
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
544 }
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
545 return n;
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
546 }
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
547
641
d402fead3386 add new pointer list wrapper - resolves #234
Mike Becker <universe@uap-core.de>
parents: 640
diff changeset
548 static int cx_ll_insert_element(
d402fead3386 add new pointer list wrapper - resolves #234
Mike Becker <universe@uap-core.de>
parents: 640
diff changeset
549 struct cx_list_s *list,
d402fead3386 add new pointer list wrapper - resolves #234
Mike Becker <universe@uap-core.de>
parents: 640
diff changeset
550 size_t index,
d402fead3386 add new pointer list wrapper - resolves #234
Mike Becker <universe@uap-core.de>
parents: 640
diff changeset
551 void const *element
d402fead3386 add new pointer list wrapper - resolves #234
Mike Becker <universe@uap-core.de>
parents: 640
diff changeset
552 ) {
d402fead3386 add new pointer list wrapper - resolves #234
Mike Becker <universe@uap-core.de>
parents: 640
diff changeset
553 return 1 != cx_ll_insert_array(list, index, element, 1);
d402fead3386 add new pointer list wrapper - resolves #234
Mike Becker <universe@uap-core.de>
parents: 640
diff changeset
554 }
d402fead3386 add new pointer list wrapper - resolves #234
Mike Becker <universe@uap-core.de>
parents: 640
diff changeset
555
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
556 static int cx_ll_remove(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
557 struct cx_list_s *list,
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
558 size_t index
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
559 ) {
447
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
560 cx_linked_list *ll = (cx_linked_list *) list;
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
561 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
562
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
563 // out-of-bounds check
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
564 if (node == NULL) return 1;
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
565
476
60ff4561dc04 change contract of cx_linked_list_remove()
Mike Becker <universe@uap-core.de>
parents: 475
diff changeset
566 // remove
60ff4561dc04 change contract of cx_linked_list_remove()
Mike Becker <universe@uap-core.de>
parents: 475
diff changeset
567 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
568 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
569
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
570 // adjust size
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
571 list->size--;
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
572
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
573 // free and return
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
574 cxFree(list->allocator, node);
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
575
438
cd3069757010 add function cx_linked_list_at()
Mike Becker <universe@uap-core.de>
parents: 437
diff changeset
576 return 0;
398
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
577 }
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
578
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
579 static void *cx_ll_at(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
580 struct cx_list_s const *list,
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
581 size_t index
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
582 ) {
439
9a5adedd6de6 add high-level function cxListAt()
Mike Becker <universe@uap-core.de>
parents: 438
diff changeset
583 cx_linked_list *ll = (cx_linked_list *) list;
447
87b2cdd668ed implement cx_ll_remove()
Mike Becker <universe@uap-core.de>
parents: 446
diff changeset
584 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
585 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
586 }
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
587
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
588 static size_t cx_ll_find(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
589 struct cx_list_s const *list,
489
af6be1e123aa add some const qualifiers
Mike Becker <universe@uap-core.de>
parents: 488
diff changeset
590 void const *elem
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
591 ) {
480
e3be53a3354f add cx_linked_list_find()
Mike Becker <universe@uap-core.de>
parents: 478
diff changeset
592 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
593 CX_LL_LOC_NEXT, CX_LL_LOC_DATA,
639
309e8b08c60e temporarily remove pointer lists - see #234
Mike Becker <universe@uap-core.de>
parents: 638
diff changeset
594 list->cmpfunc, elem);
466
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
595 }
28bc3e10ac28 add special linked list implementation for storing pointers
Mike Becker <universe@uap-core.de>
parents: 457
diff changeset
596
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
597 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
598 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
599 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
600 CX_LL_LOC_PREV, CX_LL_LOC_NEXT, CX_LL_LOC_DATA,
639
309e8b08c60e temporarily remove pointer lists - see #234
Mike Becker <universe@uap-core.de>
parents: 638
diff changeset
601 list->cmpfunc);
469
0458bff0b1cd add high level list sort and inlines method invocation functions
Mike Becker <universe@uap-core.de>
parents: 468
diff changeset
602 }
0458bff0b1cd add high level list sort and inlines method invocation functions
Mike Becker <universe@uap-core.de>
parents: 468
diff changeset
603
500
eb9e7bd40a8e do not hide pointers behind typedefs
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parents: 499
diff changeset
604 static void cx_ll_reverse(struct cx_list_s *list) {
490
e66551b47466 add cxListReverse()
Mike Becker <universe@uap-core.de>
parents: 489
diff changeset
605 cx_linked_list *ll = (cx_linked_list *) list;
521
e5dc54131d55 add test for cxListCompare
Mike Becker <universe@uap-core.de>
parents: 509
diff changeset
606 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
607 }
e66551b47466 add cxListReverse()
Mike Becker <universe@uap-core.de>
parents: 489
diff changeset
608
488
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
609 static int cx_ll_compare(
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
610 struct cx_list_s const *list,
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
611 struct cx_list_s const *other
488
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
612 ) {
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
613 cx_linked_list *left = (cx_linked_list *) list;
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
614 cx_linked_list *right = (cx_linked_list *) other;
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
615 return cx_linked_list_compare(left->begin, right->begin,
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
616 CX_LL_LOC_NEXT, CX_LL_LOC_DATA,
639
309e8b08c60e temporarily remove pointer lists - see #234
Mike Becker <universe@uap-core.de>
parents: 638
diff changeset
617 list->cmpfunc);
488
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
618 }
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
619
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
620 static bool cx_ll_iter_valid(void const *it) {
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
621 struct cx_iterator_s const *iter = it;
495
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
622 return iter->elem_handle != NULL;
494
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
623 }
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
624
630
ac5e7f789048 separate iterators and mutating iterators
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parents: 629
diff changeset
625 static void cx_ll_iter_next(void *it) {
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
626 struct cx_iterator_base_s *itbase = it;
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
627 if (itbase->remove) {
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
628 itbase->remove = false;
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
629 struct cx_mut_iterator_s *iter = it;
495
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
630 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
631 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
632 iter->elem_handle = node->next;
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
633 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
634 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
635 ll->base.size--;
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
636 cxFree(ll->base.allocator, node);
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
637 } else {
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
638 struct cx_iterator_s *iter = it;
495
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
639 iter->index++;
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 }
494
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
643 }
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
644
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
645 static void *cx_ll_iter_current(void const *it) {
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
646 struct cx_iterator_s const *iter = it;
495
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
647 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
648 return node->payload;
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
649 }
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
650
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
651 static bool cx_ll_iter_flag_rm(void *it) {
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
652 struct cx_iterator_base_s *iter = it;
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
653 if (iter->mutating) {
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
654 iter->remove = true;
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
655 return true;
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
656 } else {
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
657 return false;
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
658 }
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
659 }
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
660
494
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
661 static CxIterator cx_ll_iterator(
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
662 struct cx_list_s const *list,
494
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
663 size_t index
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
664 ) {
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
665 CxIterator iter;
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
666 iter.index = index;
495
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
667 iter.src_handle = list;
2856c74e18ba add the feature to remove items during iteration
Mike Becker <universe@uap-core.de>
parents: 494
diff changeset
668 iter.elem_handle = cx_ll_node_at((cx_linked_list const *) list, index);
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
669 iter.base.valid = cx_ll_iter_valid;
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
670 iter.base.current = cx_ll_iter_current;
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
671 iter.base.next = cx_ll_iter_next;
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
672 iter.base.flag_removal = cx_ll_iter_flag_rm;
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
673 iter.base.mutating = false;
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
674 iter.base.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
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
678 static int cx_ll_insert_iter(
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
679 CxMutIterator *iter,
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
680 void const *elem,
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
681 int prepend
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
682 ) {
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
683 struct cx_list_s *list = iter->src_handle;
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
684 cx_linked_list_node *node = iter->elem_handle;
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
685 if (node != NULL) {
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
686 assert(prepend >= 0 && prepend <= 1);
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
687 cx_linked_list_node *choice[2] = {node, node->prev};
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
688 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
689 iter->index += prepend * (0 == result);
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
690 return result;
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
691 } else {
641
d402fead3386 add new pointer list wrapper - resolves #234
Mike Becker <universe@uap-core.de>
parents: 640
diff changeset
692 int result = cx_ll_insert_element(list, list->size, elem);
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
693 iter->index = list->size;
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
694 return result;
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
695 }
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
696 }
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
697
524
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
698 static void cx_ll_destructor(CxList *list) {
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
699 cx_linked_list *ll = (cx_linked_list *) list;
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
700
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
701 cx_linked_list_node *node = ll->begin;
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
702 while (node) {
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
703 void *next = node->next;
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
704 cxFree(list->allocator, node);
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
705 node = next;
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
706 }
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
707 // 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
708 }
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
709
451
db06dda7ac4d make cx_linked_list_class static
Mike Becker <universe@uap-core.de>
parents: 448
diff changeset
710 static cx_list_class cx_linked_list_class = {
524
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 521
diff changeset
711 cx_ll_destructor,
641
d402fead3386 add new pointer list wrapper - resolves #234
Mike Becker <universe@uap-core.de>
parents: 640
diff changeset
712 cx_ll_insert_element,
638
eafb45eefc51 add cxListInsertArray() - fixes #224
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
713 cx_ll_insert_array,
499
3dc9075df822 add cxListInsertAfter() and cxListInsertBefore()
Mike Becker <universe@uap-core.de>
parents: 495
diff changeset
714 cx_ll_insert_iter,
398
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
715 cx_ll_remove,
439
9a5adedd6de6 add high-level function cxListAt()
Mike Becker <universe@uap-core.de>
parents: 438
diff changeset
716 cx_ll_at,
404
86ebc3745e62 adds cxListLast
Mike Becker <universe@uap-core.de>
parents: 403
diff changeset
717 cx_ll_find,
488
9138acaa494b add cxLinkedListFromArray() and cxListCompare()
Mike Becker <universe@uap-core.de>
parents: 487
diff changeset
718 cx_ll_sort,
490
e66551b47466 add cxListReverse()
Mike Becker <universe@uap-core.de>
parents: 489
diff changeset
719 cx_ll_compare,
494
6ce8cfa10a96 add iterator interface + linked list iterator
Mike Becker <universe@uap-core.de>
parents: 490
diff changeset
720 cx_ll_reverse,
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 629
diff changeset
721 cx_ll_iterator,
398
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
722 };
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
723
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
724 CxList *cxLinkedListCreate(
508
8aea65ae1eaf #168 - add attributes and const
Mike Becker <universe@uap-core.de>
parents: 503
diff changeset
725 CxAllocator const *allocator,
481
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
726 CxListComparator comparator,
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
727 size_t item_size
eef025d82a34 add several new linked list functions
Mike Becker <universe@uap-core.de>
parents: 480
diff changeset
728 ) {
503
a89857072ace add new destructor API and apply it to CxList
Mike Becker <universe@uap-core.de>
parents: 500
diff changeset
729 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
730 if (list == NULL) return NULL;
398
8d506ed6c1c0 adds first draft for linked list implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
731
435
0fe204d50f54 change inheritance model for lists
Mike Becker <universe@uap-core.de>
parents: 428
diff changeset
732 list->base.cl = &cx_linked_list_class;
0fe204d50f54 change inheritance model for lists
Mike Becker <universe@uap-core.de>
parents: 428
diff changeset
733 list->base.allocator = allocator;
0fe204d50f54 change inheritance model for lists
Mike Becker <universe@uap-core.de>
parents: 428
diff changeset
734 list->base.cmpfunc = comparator;
0fe204d50f54 change inheritance model for lists
Mike Becker <universe@uap-core.de>
parents: 428
diff changeset
735 list->base.itemsize = item_size;
0fe204d50f54 change inheritance model for lists
Mike Becker <universe@uap-core.de>
parents: 428
diff changeset
736 list->base.capacity = SIZE_MAX;
406
9cbea761fbf7 adds cxLinkedListWrap and cxLinkedListRecalculateSize
Mike Becker <universe@uap-core.de>
parents: 404
diff changeset
737
500
eb9e7bd40a8e do not hide pointers behind typedefs
Mike Becker <universe@uap-core.de>
parents: 499
diff changeset
738 return (CxList *) list;
406
9cbea761fbf7 adds cxLinkedListWrap and cxLinkedListRecalculateSize
Mike Becker <universe@uap-core.de>
parents: 404
diff changeset
739 }

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