Sun, 17 Dec 2023 15:33:50 +0100
fix faulty string to int conversion utilities
Probably it was expected that errno is set to EINVAL when illegal characters are encountered. But this is not standard and does not happen on every system, allowing illegal strings to be parsed as valid integers.
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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 | |
748 | 59 | ssize_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 | cx_compare_func 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; |
748 | 72 | ssize_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); |
748 | 81 | return -1; |
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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 | |
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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 | |
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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 | |
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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 | #ifndef CX_LINKED_LIST_SORT_SBO_SIZE |
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283 | #define CX_LINKED_LIST_SORT_SBO_SIZE 1024 |
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284 | #endif |
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285 | |
750 | 286 | static void cx_linked_list_sort_merge( |
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287 | ptrdiff_t loc_prev, |
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288 | ptrdiff_t loc_next, |
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289 | ptrdiff_t loc_data, |
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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, |
750 | 294 | cx_compare_func cmp_func, |
295 | void **begin, | |
296 | void **end | |
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297 | ) { |
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298 | void *sbo[CX_LINKED_LIST_SORT_SBO_SIZE]; |
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299 | void **sorted = length >= CX_LINKED_LIST_SORT_SBO_SIZE ? |
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300 | malloc(sizeof(void *) * length) : sbo; |
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301 | if (sorted == NULL) abort(); |
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302 | void *rc, *lc; |
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303 | |
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304 | lc = ls; |
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305 | rc = le; |
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306 | size_t n = 0; |
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307 | while (lc && lc != le && rc != re) { |
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308 | if (cmp_func(ll_data(lc), ll_data(rc)) <= 0) { |
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309 | sorted[n] = lc; |
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310 | lc = ll_next(lc); |
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311 | } else { |
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312 | sorted[n] = rc; |
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313 | rc = ll_next(rc); |
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314 | } |
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315 | n++; |
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316 | } |
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317 | while (lc && lc != le) { |
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318 | sorted[n] = lc; |
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319 | lc = ll_next(lc); |
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320 | n++; |
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321 | } |
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322 | while (rc && rc != re) { |
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323 | sorted[n] = rc; |
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324 | rc = ll_next(rc); |
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325 | n++; |
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326 | } |
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327 | |
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328 | // Update pointer |
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329 | if (loc_prev >= 0) ll_prev(sorted[0]) = NULL; |
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330 | cx_for_n (i, length - 1) { |
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331 | cx_linked_list_link(sorted[i], sorted[i + 1], loc_prev, loc_next); |
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332 | } |
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333 | ll_next(sorted[length - 1]) = NULL; |
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334 | |
750 | 335 | *begin = sorted[0]; |
336 | *end = sorted[length-1]; | |
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337 | if (sorted != sbo) { |
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338 | free(sorted); |
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339 | } |
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340 | } |
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341 | |
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342 | void cx_linked_list_sort( // NOLINT(misc-no-recursion) - purposely recursive function |
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343 | void **begin, |
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344 | void **end, |
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345 | ptrdiff_t loc_prev, |
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346 | ptrdiff_t loc_next, |
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347 | ptrdiff_t loc_data, |
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348 | cx_compare_func cmp_func |
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349 | ) { |
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350 | assert(begin != NULL); |
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351 | assert(loc_next >= 0); |
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352 | assert(loc_data >= 0); |
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353 | assert(cmp_func); |
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354 | |
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355 | void *lc, *ls, *le, *re; |
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356 | |
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357 | // set start node |
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358 | ls = *begin; |
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359 | |
748 | 360 | // early exit when this list is empty |
361 | if (ls == NULL) return; | |
362 | ||
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363 | // check how many elements are already sorted |
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364 | lc = ls; |
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365 | size_t ln = 1; |
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366 | while (ll_next(lc) != NULL && cmp_func(ll_data(ll_next(lc)), ll_data(lc)) > 0) { |
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367 | lc = ll_next(lc); |
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368 | ln++; |
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369 | } |
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370 | le = ll_next(lc); |
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371 | |
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372 | // if first unsorted node is NULL, the list is already completely sorted |
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373 | if (le != NULL) { |
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374 | void *rc; |
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375 | size_t rn = 1; |
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376 | rc = le; |
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377 | // skip already sorted elements |
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378 | while (ll_next(rc) != NULL && cmp_func(ll_data(ll_next(rc)), ll_data(rc)) > 0) { |
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379 | rc = ll_next(rc); |
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380 | rn++; |
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381 | } |
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382 | re = ll_next(rc); |
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383 | |
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384 | // {ls,...,le->prev} and {rs,...,re->prev} are sorted - merge them |
750 | 385 | void *sorted_begin, *sorted_end; |
386 | cx_linked_list_sort_merge(loc_prev, loc_next, loc_data, | |
387 | ln + rn, ls, le, re, cmp_func, | |
388 | &sorted_begin, &sorted_end); | |
747
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389 | |
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390 | // Something left? Sort it! |
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391 | size_t remainder_length = cx_linked_list_size(re, loc_next); |
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392 | if (remainder_length > 0) { |
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393 | void *remainder = re; |
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394 | cx_linked_list_sort(&remainder, NULL, loc_prev, loc_next, loc_data, cmp_func); |
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395 | |
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396 | // merge sorted list with (also sorted) remainder |
750 | 397 | cx_linked_list_sort_merge(loc_prev, loc_next, loc_data, |
398 | ln + rn + remainder_length, | |
399 | sorted_begin, remainder, NULL, cmp_func, | |
400 | &sorted_begin, &sorted_end); | |
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401 | } |
750 | 402 | *begin = sorted_begin; |
403 | if (end) *end = sorted_end; | |
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404 | } |
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405 | } |
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406 | |
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407 | int cx_linked_list_compare( |
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408 | void const *begin_left, |
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409 | void const *begin_right, |
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410 | ptrdiff_t loc_advance, |
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411 | ptrdiff_t loc_data, |
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412 | cx_compare_func cmp_func |
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413 | ) { |
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414 | void const *left = begin_left, *right = begin_right; |
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415 | |
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416 | while (left != NULL && right != NULL) { |
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417 | void const *left_data = ll_data(left); |
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418 | void const *right_data = ll_data(right); |
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419 | int result = cmp_func(left_data, right_data); |
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420 | if (result != 0) return result; |
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421 | left = ll_advance(left); |
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422 | right = ll_advance(right); |
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423 | } |
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424 | |
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425 | if (left != NULL) { return 1; } |
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426 | else if (right != NULL) { return -1; } |
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427 | else { return 0; } |
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428 | } |
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429 | |
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430 | void cx_linked_list_reverse( |
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431 | void **begin, |
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432 | void **end, |
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433 | ptrdiff_t loc_prev, |
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434 | ptrdiff_t loc_next |
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435 | ) { |
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436 | assert(begin != NULL); |
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437 | assert(loc_next >= 0); |
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438 | |
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439 | // swap all links |
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440 | void *prev = NULL; |
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441 | void *cur = *begin; |
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442 | while (cur != NULL) { |
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443 | void *next = ll_next(cur); |
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444 | |
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445 | ll_next(cur) = prev; |
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446 | if (loc_prev >= 0) { |
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447 | ll_prev(cur) = next; |
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448 | } |
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449 | |
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450 | prev = cur; |
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451 | cur = next; |
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452 | } |
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453 | |
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454 | // update begin and end |
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455 | if (end != NULL) { |
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456 | *end = *begin; |
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457 | } |
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458 | *begin = prev; |
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459 | } |
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460 | |
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461 | // HIGH LEVEL LINKED LIST IMPLEMENTATION |
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462 | |
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463 | bool CX_DISABLE_LINKED_LIST_SWAP_SBO = false; |
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464 | |
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465 | typedef struct cx_linked_list_node cx_linked_list_node; |
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466 | struct cx_linked_list_node { |
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467 | cx_linked_list_node *prev; |
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468 | cx_linked_list_node *next; |
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469 | char payload[]; |
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470 | }; |
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471 | |
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472 | #define CX_LL_LOC_PREV offsetof(cx_linked_list_node, prev) |
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473 | #define CX_LL_LOC_NEXT offsetof(cx_linked_list_node, next) |
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474 | #define CX_LL_LOC_DATA offsetof(cx_linked_list_node, payload) |
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475 | |
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476 | typedef struct { |
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477 | struct cx_list_s base; |
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478 | cx_linked_list_node *begin; |
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479 | cx_linked_list_node *end; |
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480 | } cx_linked_list; |
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481 | |
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482 | static cx_linked_list_node *cx_ll_node_at( |
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483 | cx_linked_list const *list, |
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484 | size_t index |
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485 | ) { |
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486 | if (index >= list->base.size) { |
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487 | return NULL; |
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488 | } else if (index > list->base.size / 2) { |
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489 | return cx_linked_list_at(list->end, list->base.size - 1, CX_LL_LOC_PREV, index); |
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490 | } else { |
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491 | return cx_linked_list_at(list->begin, 0, CX_LL_LOC_NEXT, index); |
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492 | } |
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493 | } |
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494 | |
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495 | static int cx_ll_insert_at( |
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496 | struct cx_list_s *list, |
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497 | cx_linked_list_node *node, |
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498 | void const *elem |
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499 | ) { |
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500 | |
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501 | // create the new new_node |
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502 | cx_linked_list_node *new_node = cxMalloc(list->allocator, |
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503 | sizeof(cx_linked_list_node) + list->item_size); |
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504 | |
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505 | // sortir if failed |
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506 | if (new_node == NULL) return 1; |
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507 | |
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508 | // initialize new new_node |
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509 | new_node->prev = new_node->next = NULL; |
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510 | memcpy(new_node->payload, elem, list->item_size); |
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511 | |
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512 | // insert |
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513 | cx_linked_list *ll = (cx_linked_list *) list; |
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514 | cx_linked_list_insert_chain( |
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515 | (void **) &ll->begin, (void **) &ll->end, |
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516 | CX_LL_LOC_PREV, CX_LL_LOC_NEXT, |
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517 | node, new_node, new_node |
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518 | ); |
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519 | |
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520 | // increase the size and return |
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521 | list->size++; |
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522 | return 0; |
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523 | } |
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524 | |
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525 | static size_t cx_ll_insert_array( |
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526 | struct cx_list_s *list, |
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527 | size_t index, |
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528 | void const *array, |
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529 | size_t n |
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530 | ) { |
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531 | // out-of bounds and corner case check |
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532 | if (index > list->size || n == 0) return 0; |
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533 | |
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534 | // find position efficiently |
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535 | cx_linked_list_node *node = index == 0 ? NULL : cx_ll_node_at((cx_linked_list *) list, index - 1); |
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536 | |
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537 | // perform first insert |
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538 | if (0 != cx_ll_insert_at(list, node, array)) { |
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539 | return 1; |
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540 | } |
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541 | |
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542 | // is there more? |
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543 | if (n == 1) return 1; |
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544 | |
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545 | // we now know exactly where we are |
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546 | node = node == NULL ? ((cx_linked_list *) list)->begin : node->next; |
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547 | |
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548 | // we can add the remaining nodes and immedately advance to the inserted node |
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549 | char const *source = array; |
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550 | for (size_t i = 1; i < n; i++) { |
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551 | source += list->item_size; |
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552 | if (0 != cx_ll_insert_at(list, node, source)) { |
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553 | return i; |
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554 | } |
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555 | node = node->next; |
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556 | } |
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557 | return n; |
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558 | } |
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559 | |
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560 | static int cx_ll_insert_element( |
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561 | struct cx_list_s *list, |
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562 | size_t index, |
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563 | void const *element |
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564 | ) { |
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565 | return 1 != cx_ll_insert_array(list, index, element, 1); |
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566 | } |
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567 | |
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568 | static int cx_ll_remove( |
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569 | struct cx_list_s *list, |
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570 | size_t index |
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571 | ) { |
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572 | cx_linked_list *ll = (cx_linked_list *) list; |
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573 | cx_linked_list_node *node = cx_ll_node_at(ll, index); |
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574 | |
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575 | // out-of-bounds check |
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576 | if (node == NULL) return 1; |
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577 | |
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578 | // element destruction |
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579 | cx_invoke_destructor(list, node->payload); |
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580 | |
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581 | // remove |
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582 | cx_linked_list_remove((void **) &ll->begin, (void **) &ll->end, |
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|
583 | CX_LL_LOC_PREV, CX_LL_LOC_NEXT, node); |
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584 | |
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585 | // adjust size |
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586 | list->size--; |
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587 | |
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588 | // free and return |
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589 | cxFree(list->allocator, node); |
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590 | |
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591 | return 0; |
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592 | } |
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593 | |
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594 | static void cx_ll_clear(struct cx_list_s *list) { |
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595 | if (list->size == 0) return; |
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596 | |
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597 | cx_linked_list *ll = (cx_linked_list *) list; |
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598 | cx_linked_list_node *node = ll->begin; |
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599 | while (node != NULL) { |
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600 | cx_invoke_destructor(list, node->payload); |
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601 | cx_linked_list_node *next = node->next; |
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602 | cxFree(list->allocator, node); |
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603 | node = next; |
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604 | } |
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|
605 | ll->begin = ll->end = NULL; |
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606 | list->size = 0; |
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607 | } |
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608 | |
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609 | #ifndef CX_LINKED_LIST_SWAP_SBO_SIZE |
776 | 610 | #define CX_LINKED_LIST_SWAP_SBO_SIZE 128 |
747
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611 | #endif |
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612 | |
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613 | static int cx_ll_swap( |
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614 | struct cx_list_s *list, |
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615 | size_t i, |
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616 | size_t j |
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617 | ) { |
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618 | if (i >= list->size || j >= list->size) return 1; |
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parents:
diff
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619 | if (i == j) return 0; |
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620 | |
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621 | // perform an optimized search that finds both elements in one run |
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parents:
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622 | cx_linked_list *ll = (cx_linked_list *) list; |
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parents:
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623 | size_t mid = list->size / 2; |
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parents:
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624 | size_t left, right; |
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625 | if (i < j) { |
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626 | left = i; |
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627 | right = j; |
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628 | } else { |
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629 | left = j; |
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630 | right = i; |
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631 | } |
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632 | cx_linked_list_node *nleft, *nright; |
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633 | if (left < mid && right < mid) { |
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634 | // case 1: both items left from mid |
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635 | nleft = cx_ll_node_at(ll, left); |
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636 | nright = nleft; |
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637 | for (size_t c = left; c < right; c++) { |
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638 | nright = nright->next; |
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639 | } |
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640 | } else if (left >= mid && right >= mid) { |
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parents:
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641 | // case 2: both items right from mid |
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642 | nright = cx_ll_node_at(ll, right); |
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643 | nleft = nright; |
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644 | for (size_t c = right; c > left; c--) { |
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645 | nleft = nleft->prev; |
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646 | } |
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647 | } else { |
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648 | // case 3: one item left, one item right |
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changeset
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649 | |
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650 | // chose the closest to begin / end |
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651 | size_t closest; |
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652 | size_t other; |
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parents:
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653 | size_t diff2boundary = list->size - right - 1; |
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654 | if (left <= diff2boundary) { |
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655 | closest = left; |
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656 | other = right; |
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parents:
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657 | nleft = cx_ll_node_at(ll, left); |
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658 | } else { |
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659 | closest = right; |
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660 | other = left; |
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661 | diff2boundary = left; |
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662 | nright = cx_ll_node_at(ll, right); |
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663 | } |
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664 | |
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665 | // is other element closer to us or closer to boundary? |
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666 | if (right - left <= diff2boundary) { |
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667 | // search other element starting from already found element |
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668 | if (closest == left) { |
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669 | nright = nleft; |
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670 | for (size_t c = left; c < right; c++) { |
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671 | nright = nright->next; |
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672 | } |
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673 | } else { |
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674 | nleft = nright; |
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parents:
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675 | for (size_t c = right; c > left; c--) { |
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676 | nleft = nleft->prev; |
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677 | } |
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678 | } |
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679 | } else { |
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680 | // search other element starting at the boundary |
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|
681 | if (closest == left) { |
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parents:
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682 | nright = cx_ll_node_at(ll, other); |
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683 | } else { |
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684 | nleft = cx_ll_node_at(ll, other); |
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685 | } |
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686 | } |
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687 | } |
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688 | |
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689 | if (list->item_size > CX_LINKED_LIST_SWAP_SBO_SIZE || CX_DISABLE_LINKED_LIST_SWAP_SBO) { |
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690 | cx_linked_list_node *prev = nleft->prev; |
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691 | cx_linked_list_node *next = nright->next; |
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692 | cx_linked_list_node *midstart = nleft->next; |
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693 | cx_linked_list_node *midend = nright->prev; |
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694 | |
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695 | if (prev == NULL) { |
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696 | ll->begin = nright; |
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697 | } else { |
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698 | prev->next = nright; |
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699 | } |
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700 | nright->prev = prev; |
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701 | if (midstart == nright) { |
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702 | // special case: both nodes are adjacent |
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703 | nright->next = nleft; |
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704 | nleft->prev = nright; |
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705 | } else { |
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706 | // likely case: a chain is between the two nodes |
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707 | nright->next = midstart; |
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708 | midstart->prev = nright; |
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709 | midend->next = nleft; |
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710 | nleft->prev = midend; |
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711 | } |
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712 | nleft->next = next; |
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713 | if (next == NULL) { |
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714 | ll->end = nleft; |
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715 | } else { |
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716 | next->prev = nleft; |
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717 | } |
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718 | } else { |
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719 | // swap payloads to avoid relinking |
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|
720 | char buf[CX_LINKED_LIST_SWAP_SBO_SIZE]; |
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721 | memcpy(buf, nleft->payload, list->item_size); |
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722 | memcpy(nleft->payload, nright->payload, list->item_size); |
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723 | memcpy(nright->payload, buf, list->item_size); |
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changeset
|
724 | } |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
725 | |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
726 | return 0; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
727 | } |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
728 | |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
729 | static void *cx_ll_at( |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
730 | struct cx_list_s const *list, |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
731 | size_t index |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
732 | ) { |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
733 | cx_linked_list *ll = (cx_linked_list *) list; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
734 | cx_linked_list_node *node = cx_ll_node_at(ll, index); |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
735 | return node == NULL ? NULL : node->payload; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
736 | } |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
737 | |
748 | 738 | static ssize_t cx_ll_find( |
747
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
739 | struct cx_list_s const *list, |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
740 | void const *elem |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
741 | ) { |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
742 | return cx_linked_list_find(((cx_linked_list *) list)->begin, |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
743 | CX_LL_LOC_NEXT, CX_LL_LOC_DATA, |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
744 | list->cmpfunc, elem); |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
745 | } |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
746 | |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
747 | static void cx_ll_sort(struct cx_list_s *list) { |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
748 | cx_linked_list *ll = (cx_linked_list *) list; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
749 | cx_linked_list_sort((void **) &ll->begin, (void **) &ll->end, |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
750 | CX_LL_LOC_PREV, CX_LL_LOC_NEXT, CX_LL_LOC_DATA, |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
751 | list->cmpfunc); |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
752 | } |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
753 | |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
754 | static void cx_ll_reverse(struct cx_list_s *list) { |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
755 | cx_linked_list *ll = (cx_linked_list *) list; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
756 | cx_linked_list_reverse((void **) &ll->begin, (void **) &ll->end, CX_LL_LOC_PREV, CX_LL_LOC_NEXT); |
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ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
757 | } |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
758 | |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
759 | static int cx_ll_compare( |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
760 | struct cx_list_s const *list, |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
761 | struct cx_list_s const *other |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
762 | ) { |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
763 | cx_linked_list *left = (cx_linked_list *) list; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
764 | cx_linked_list *right = (cx_linked_list *) other; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
765 | return cx_linked_list_compare(left->begin, right->begin, |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
766 | CX_LL_LOC_NEXT, CX_LL_LOC_DATA, |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
767 | list->cmpfunc); |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
768 | } |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
769 | |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
770 | static bool cx_ll_iter_valid(void const *it) { |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
771 | struct cx_iterator_s const *iter = it; |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
772 | return iter->elem_handle != NULL; |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
773 | } |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
774 | |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
775 | static void cx_ll_iter_next(void *it) { |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
776 | struct cx_iterator_base_s *itbase = it; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
777 | if (itbase->remove) { |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
778 | itbase->remove = false; |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
779 | struct cx_mut_iterator_s *iter = it; |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
780 | struct cx_list_s *list = iter->src_handle; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
781 | cx_linked_list *ll = iter->src_handle; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
782 | cx_linked_list_node *node = iter->elem_handle; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
783 | iter->elem_handle = node->next; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
784 | cx_invoke_destructor(list, node->payload); |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
785 | cx_linked_list_remove((void **) &ll->begin, (void **) &ll->end, |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
786 | CX_LL_LOC_PREV, CX_LL_LOC_NEXT, node); |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
787 | list->size--; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
788 | cxFree(list->allocator, node); |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
789 | } else { |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
790 | struct cx_iterator_s *iter = it; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
791 | iter->index++; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
792 | cx_linked_list_node *node = iter->elem_handle; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
793 | iter->elem_handle = node->next; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
794 | } |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
795 | } |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
796 | |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
797 | static void cx_ll_iter_prev(void *it) { |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
798 | struct cx_iterator_base_s *itbase = it; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
799 | if (itbase->remove) { |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
800 | itbase->remove = false; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
801 | struct cx_mut_iterator_s *iter = it; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
802 | struct cx_list_s *list = iter->src_handle; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
803 | cx_linked_list *ll = iter->src_handle; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
804 | cx_linked_list_node *node = iter->elem_handle; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
805 | iter->elem_handle = node->prev; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
806 | iter->index--; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
807 | cx_invoke_destructor(list, node->payload); |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
808 | cx_linked_list_remove((void **) &ll->begin, (void **) &ll->end, |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
809 | CX_LL_LOC_PREV, CX_LL_LOC_NEXT, node); |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
810 | list->size--; |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
811 | cxFree(list->allocator, node); |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
812 | } else { |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
813 | struct cx_iterator_s *iter = it; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
814 | iter->index--; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
815 | cx_linked_list_node *node = iter->elem_handle; |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
816 | iter->elem_handle = node->prev; |
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ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
817 | } |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
818 | } |
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parents:
diff
changeset
|
819 | |
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parents:
diff
changeset
|
820 | static void *cx_ll_iter_current(void const *it) { |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
821 | struct cx_iterator_s const *iter = it; |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
822 | cx_linked_list_node *node = iter->elem_handle; |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
823 | return node->payload; |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
824 | } |
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parents:
diff
changeset
|
825 | |
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parents:
diff
changeset
|
826 | static bool cx_ll_iter_flag_rm(void *it) { |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
827 | struct cx_iterator_base_s *iter = it; |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
828 | if (iter->mutating) { |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
829 | iter->remove = true; |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
830 | return true; |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
831 | } else { |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
832 | return false; |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
833 | } |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
834 | } |
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
835 | |
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parents:
diff
changeset
|
836 | static CxIterator cx_ll_iterator( |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
837 | struct cx_list_s const *list, |
efbd59642577
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
838 | size_t index, |
efbd59642577
ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff
changeset
|
839 | bool backwards |
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840 | ) { |
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841 | CxIterator iter; |
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842 | iter.index = index; |
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843 | iter.src_handle = list; |
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844 | iter.elem_handle = cx_ll_node_at((cx_linked_list const *) list, index); |
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845 | iter.base.valid = cx_ll_iter_valid; |
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846 | iter.base.current = cx_ll_iter_current; |
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847 | iter.base.next = backwards ? cx_ll_iter_prev : cx_ll_iter_next; |
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848 | iter.base.flag_removal = cx_ll_iter_flag_rm; |
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849 | iter.base.mutating = false; |
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850 | iter.base.remove = false; |
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851 | return iter; |
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852 | } |
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853 | |
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854 | static int cx_ll_insert_iter( |
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855 | CxMutIterator *iter, |
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856 | void const *elem, |
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857 | int prepend |
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858 | ) { |
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859 | struct cx_list_s *list = iter->src_handle; |
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860 | cx_linked_list_node *node = iter->elem_handle; |
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861 | if (node != NULL) { |
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862 | assert(prepend >= 0 && prepend <= 1); |
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863 | cx_linked_list_node *choice[2] = {node, node->prev}; |
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864 | int result = cx_ll_insert_at(list, choice[prepend], elem); |
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865 | iter->index += prepend * (0 == result); |
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866 | return result; |
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867 | } else { |
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868 | int result = cx_ll_insert_element(list, list->size, elem); |
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869 | iter->index = list->size; |
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870 | return result; |
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871 | } |
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872 | } |
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873 | |
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874 | static void cx_ll_destructor(CxList *list) { |
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875 | cx_linked_list *ll = (cx_linked_list *) list; |
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876 | |
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877 | cx_linked_list_node *node = ll->begin; |
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878 | while (node) { |
750 | 879 | cx_invoke_destructor(list, node->payload); |
747
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880 | void *next = node->next; |
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881 | cxFree(list->allocator, node); |
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882 | node = next; |
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883 | } |
750 | 884 | |
885 | cxFree(list->allocator, list); | |
747
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886 | } |
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887 | |
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888 | static cx_list_class cx_linked_list_class = { |
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889 | cx_ll_destructor, |
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890 | cx_ll_insert_element, |
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891 | cx_ll_insert_array, |
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892 | cx_ll_insert_iter, |
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893 | cx_ll_remove, |
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894 | cx_ll_clear, |
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895 | cx_ll_swap, |
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896 | cx_ll_at, |
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897 | cx_ll_find, |
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898 | cx_ll_sort, |
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899 | cx_ll_compare, |
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900 | cx_ll_reverse, |
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901 | cx_ll_iterator, |
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902 | }; |
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903 | |
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904 | CxList *cxLinkedListCreate( |
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905 | CxAllocator const *allocator, |
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906 | cx_compare_func comparator, |
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907 | size_t item_size |
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908 | ) { |
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909 | if (allocator == NULL) { |
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910 | allocator = cxDefaultAllocator; |
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911 | } |
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912 | |
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913 | cx_linked_list *list = cxCalloc(allocator, 1, sizeof(cx_linked_list)); |
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914 | if (list == NULL) return NULL; |
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915 | |
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916 | list->base.cl = &cx_linked_list_class; |
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917 | list->base.allocator = allocator; |
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918 | list->base.cmpfunc = comparator; |
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919 | |
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920 | if (item_size > 0) { |
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921 | list->base.item_size = item_size; |
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922 | } else { |
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923 | cxListStorePointers((CxList *) list); |
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924 | } |
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925 | |
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926 | return (CxList *) list; |
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927 | } |