src/list.c

Sat, 01 Apr 2023 11:51:48 +0200

author
Mike Becker <universe@uap-core.de>
date
Sat, 01 Apr 2023 11:51:48 +0200
changeset 672
55d8fdd38ca4
parent 666
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child 677
b09aae58bba4
permissions
-rw-r--r--

increase test coverage - fixes #250

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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/list.h"
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30
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31 #include <string.h>
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32
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33 // <editor-fold desc="Store Pointers Functionality">
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34
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35 static _Thread_local CxListComparator cx_pl_cmpfunc_impl;
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36
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37 static int cx_pl_cmpfunc(
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38 void const *l,
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39 void const *r
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40 ) {
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41 void *const *lptr = l;
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42 void *const *rptr = r;
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43 void const *left = lptr == NULL ? NULL : *lptr;
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44 void const *right = rptr == NULL ? NULL : *rptr;
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45 return cx_pl_cmpfunc_impl(left, right);
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46 }
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47
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48 static void cx_pl_hack_cmpfunc(struct cx_list_s const *list) {
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49 // cast away const - this is the hacky thing
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50 struct cx_list_s *l = (struct cx_list_s *) list;
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51 cx_pl_cmpfunc_impl = l->cmpfunc;
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52 l->cmpfunc = cx_pl_cmpfunc;
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53 }
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54
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55 static void cx_pl_unhack_cmpfunc(struct cx_list_s const *list) {
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56 // cast away const - this is the hacky thing
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57 struct cx_list_s *l = (struct cx_list_s *) list;
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58 l->cmpfunc = cx_pl_cmpfunc_impl;
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59 }
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60
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61 static void cx_pl_destructor(struct cx_list_s *list) {
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62 list->climpl->destructor(list);
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63 }
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64
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65 static int cx_pl_insert_element(
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66 struct cx_list_s *list,
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67 size_t index,
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68 void const *element
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69 ) {
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70 return list->climpl->insert_element(list, index, &element);
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71 }
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72
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73 static size_t cx_pl_insert_array(
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74 struct cx_list_s *list,
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75 size_t index,
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76 void const *array,
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77 size_t n
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78 ) {
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79 return list->climpl->insert_array(list, index, array, n);
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80 }
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81
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82 static int cx_pl_insert_iter(
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83 struct cx_mut_iterator_s *iter,
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84 void const *elem,
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85 int prepend
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86 ) {
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87 struct cx_list_s *list = iter->src_handle;
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88 return list->climpl->insert_iter(iter, &elem, prepend);
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89 }
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90
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91 static int cx_pl_remove(
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92 struct cx_list_s *list,
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93 size_t index
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94 ) {
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95 return list->climpl->remove(list, index);
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96 }
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97
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98 static void cx_pl_clear(struct cx_list_s *list) {
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99 list->climpl->clear(list);
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100 }
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101
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102 static int cx_pl_swap(
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103 struct cx_list_s *list,
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104 size_t i,
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105 size_t j
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106 ) {
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107 return list->climpl->swap(list, i, j);
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108 }
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109
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110 static void *cx_pl_at(
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111 struct cx_list_s const *list,
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112 size_t index
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113 ) {
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114 void **ptr = list->climpl->at(list, index);
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115 return ptr == NULL ? NULL : *ptr;
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116 }
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117
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118 static size_t cx_pl_find(
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119 struct cx_list_s const *list,
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120 void const *elem
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121 ) {
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122 cx_pl_hack_cmpfunc(list);
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123 size_t ret = list->climpl->find(list, &elem);
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124 cx_pl_unhack_cmpfunc(list);
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125 return ret;
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126 }
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127
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128 static void cx_pl_sort(struct cx_list_s *list) {
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129 cx_pl_hack_cmpfunc(list);
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130 list->climpl->sort(list);
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131 cx_pl_unhack_cmpfunc(list);
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132 }
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133
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134 static int cx_pl_compare(
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135 struct cx_list_s const *list,
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136 struct cx_list_s const *other
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137 ) {
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138 cx_pl_hack_cmpfunc(list);
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139 int ret = list->climpl->compare(list, other);
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140 cx_pl_unhack_cmpfunc(list);
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141 return ret;
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142 }
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143
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144 static void cx_pl_reverse(struct cx_list_s *list) {
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145 list->climpl->reverse(list);
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146 }
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147
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148 static void *cx_pl_iter_current(void const *it) {
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diff changeset
149 struct cx_iterator_s const *iter = it;
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diff changeset
150 void **ptr = iter->base.current_impl(it);
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diff changeset
151 return ptr == NULL ? NULL : *ptr;
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diff changeset
152 }
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diff changeset
153
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diff changeset
154 static struct cx_iterator_s cx_pl_iterator(
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diff changeset
155 struct cx_list_s const *list,
655
7340c4255f1f implement backwards iterator - fixes #238
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diff changeset
156 size_t index,
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parents: 647
diff changeset
157 bool backwards
641
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diff changeset
158 ) {
655
7340c4255f1f implement backwards iterator - fixes #238
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diff changeset
159 struct cx_iterator_s iter = list->climpl->iterator(list, index, backwards);
641
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diff changeset
160 iter.base.current_impl = iter.base.current;
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diff changeset
161 iter.base.current = cx_pl_iter_current;
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diff changeset
162 return iter;
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diff changeset
163 }
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diff changeset
164
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diff changeset
165 static cx_list_class cx_pointer_list_class = {
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diff changeset
166 cx_pl_destructor,
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diff changeset
167 cx_pl_insert_element,
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diff changeset
168 cx_pl_insert_array,
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diff changeset
169 cx_pl_insert_iter,
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diff changeset
170 cx_pl_remove,
664
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diff changeset
171 cx_pl_clear,
647
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diff changeset
172 cx_pl_swap,
641
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173 cx_pl_at,
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diff changeset
174 cx_pl_find,
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diff changeset
175 cx_pl_sort,
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176 cx_pl_compare,
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177 cx_pl_reverse,
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178 cx_pl_iterator,
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179 };
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180
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181 void cxListStoreObjects(CxList *list) {
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182 if (list->climpl != NULL) {
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183 list->cl = list->climpl;
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184 list->climpl = NULL;
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185 }
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186 }
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187
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188 void cxListStorePointers(CxList *list) {
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189 list->itemsize = sizeof(void *);
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190 list->climpl = list->cl;
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diff changeset
191 list->cl = &cx_pointer_list_class;
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diff changeset
192 }
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193
666
b5dd654deb3b add unit test for cxListClear + fix destructor functions not always invoked with the correct pointer
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diff changeset
194 bool cxListIsStoringPointers(CxList const *list) {
641
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195 return list->climpl != NULL;
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196 }
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197
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198 // </editor-fold>
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diff changeset
199
664
af5bf4603a5d add cxListClear and fix missing destructor invocations - #241 #246
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diff changeset
200 void cx_list_invoke_destructor(
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diff changeset
201 CxList const *list,
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diff changeset
202 void *elem
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diff changeset
203 ) {
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diff changeset
204 switch (list->content_destructor_type) {
af5bf4603a5d add cxListClear and fix missing destructor invocations - #241 #246
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diff changeset
205 case CX_DESTRUCTOR_SIMPLE: {
666
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diff changeset
206 cx_list_invoke_simple_destructor(list, elem);
664
af5bf4603a5d add cxListClear and fix missing destructor invocations - #241 #246
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diff changeset
207 break;
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diff changeset
208 }
af5bf4603a5d add cxListClear and fix missing destructor invocations - #241 #246
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diff changeset
209 case CX_DESTRUCTOR_ADVANCED: {
666
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diff changeset
210 cx_list_invoke_advanced_destructor(list, elem);
664
af5bf4603a5d add cxListClear and fix missing destructor invocations - #241 #246
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diff changeset
211 break;
af5bf4603a5d add cxListClear and fix missing destructor invocations - #241 #246
Mike Becker <universe@uap-core.de>
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diff changeset
212 }
af5bf4603a5d add cxListClear and fix missing destructor invocations - #241 #246
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diff changeset
213 case CX_DESTRUCTOR_NONE:
af5bf4603a5d add cxListClear and fix missing destructor invocations - #241 #246
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diff changeset
214 break; // nothing
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diff changeset
215 }
af5bf4603a5d add cxListClear and fix missing destructor invocations - #241 #246
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diff changeset
216 }
af5bf4603a5d add cxListClear and fix missing destructor invocations - #241 #246
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diff changeset
217
666
b5dd654deb3b add unit test for cxListClear + fix destructor functions not always invoked with the correct pointer
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diff changeset
218 void cx_list_invoke_simple_destructor(
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diff changeset
219 CxList const *list,
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diff changeset
220 void *elem
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diff changeset
221 ) {
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diff changeset
222 if (cxListIsStoringPointers(list)) {
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diff changeset
223 elem = *((void **) elem);
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diff changeset
224 }
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diff changeset
225 list->simple_destructor(elem);
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diff changeset
226 }
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diff changeset
227
b5dd654deb3b add unit test for cxListClear + fix destructor functions not always invoked with the correct pointer
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diff changeset
228 void cx_list_invoke_advanced_destructor(
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diff changeset
229 CxList const *list,
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diff changeset
230 void *elem
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Mike Becker <universe@uap-core.de>
parents: 664
diff changeset
231 ) {
b5dd654deb3b add unit test for cxListClear + fix destructor functions not always invoked with the correct pointer
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diff changeset
232 if (cxListIsStoringPointers(list)) {
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diff changeset
233 elem = *((void **) elem);
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parents: 664
diff changeset
234 }
b5dd654deb3b add unit test for cxListClear + fix destructor functions not always invoked with the correct pointer
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diff changeset
235 list->advanced_destructor.func(list->advanced_destructor.data, elem);
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diff changeset
236 }
b5dd654deb3b add unit test for cxListClear + fix destructor functions not always invoked with the correct pointer
Mike Becker <universe@uap-core.de>
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diff changeset
237
528
4fbfac557df8 #179 improve API for list content destruction
Mike Becker <universe@uap-core.de>
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diff changeset
238 void cxListDestroy(CxList *list) {
4fbfac557df8 #179 improve API for list content destruction
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parents: 526
diff changeset
239 switch (list->content_destructor_type) {
4fbfac557df8 #179 improve API for list content destruction
Mike Becker <universe@uap-core.de>
parents: 526
diff changeset
240 case CX_DESTRUCTOR_SIMPLE: {
655
7340c4255f1f implement backwards iterator - fixes #238
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parents: 647
diff changeset
241 CxIterator iter = cxListIterator(list);
528
4fbfac557df8 #179 improve API for list content destruction
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parents: 526
diff changeset
242 cx_foreach(void*, elem, iter) {
666
b5dd654deb3b add unit test for cxListClear + fix destructor functions not always invoked with the correct pointer
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diff changeset
243 // already correctly resolved pointer - immediately invoke dtor
528
4fbfac557df8 #179 improve API for list content destruction
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diff changeset
244 list->simple_destructor(elem);
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parents: 526
diff changeset
245 }
4fbfac557df8 #179 improve API for list content destruction
Mike Becker <universe@uap-core.de>
parents: 526
diff changeset
246 break;
503
a89857072ace add new destructor API and apply it to CxList
Mike Becker <universe@uap-core.de>
parents:
diff changeset
247 }
528
4fbfac557df8 #179 improve API for list content destruction
Mike Becker <universe@uap-core.de>
parents: 526
diff changeset
248 case CX_DESTRUCTOR_ADVANCED: {
655
7340c4255f1f implement backwards iterator - fixes #238
Mike Becker <universe@uap-core.de>
parents: 647
diff changeset
249 CxIterator iter = cxListIterator(list);
528
4fbfac557df8 #179 improve API for list content destruction
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parents: 526
diff changeset
250 cx_foreach(void*, elem, iter) {
666
b5dd654deb3b add unit test for cxListClear + fix destructor functions not always invoked with the correct pointer
Mike Becker <universe@uap-core.de>
parents: 664
diff changeset
251 // already correctly resolved pointer - immediately invoke dtor
528
4fbfac557df8 #179 improve API for list content destruction
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parents: 526
diff changeset
252 list->advanced_destructor.func(list->advanced_destructor.data, elem);
4fbfac557df8 #179 improve API for list content destruction
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parents: 526
diff changeset
253 }
4fbfac557df8 #179 improve API for list content destruction
Mike Becker <universe@uap-core.de>
parents: 526
diff changeset
254 break;
4fbfac557df8 #179 improve API for list content destruction
Mike Becker <universe@uap-core.de>
parents: 526
diff changeset
255 }
4fbfac557df8 #179 improve API for list content destruction
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parents: 526
diff changeset
256 case CX_DESTRUCTOR_NONE:
4fbfac557df8 #179 improve API for list content destruction
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parents: 526
diff changeset
257 break; // nothing
503
a89857072ace add new destructor API and apply it to CxList
Mike Becker <universe@uap-core.de>
parents:
diff changeset
258 }
528
4fbfac557df8 #179 improve API for list content destruction
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parents: 526
diff changeset
259
524
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 519
diff changeset
260 list->cl->destructor(list);
e98b09018d32 remove list destructor
Mike Becker <universe@uap-core.de>
parents: 519
diff changeset
261 cxFree(list->allocator, list);
503
a89857072ace add new destructor API and apply it to CxList
Mike Becker <universe@uap-core.de>
parents:
diff changeset
262 }
618
1f5a8f6f3015 #219 array list: implement compare
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
263
1f5a8f6f3015 #219 array list: implement compare
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
264 int cxListCompare(
1f5a8f6f3015 #219 array list: implement compare
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parents: 528
diff changeset
265 CxList const *list,
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parents: 528
diff changeset
266 CxList const *other
1f5a8f6f3015 #219 array list: implement compare
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
267 ) {
1f5a8f6f3015 #219 array list: implement compare
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parents: 528
diff changeset
268 if (list->cl->compare == other->cl->compare) {
628
1e2be40f0cb5 use //-style single line comments everywhere
Mike Becker <universe@uap-core.de>
parents: 618
diff changeset
269 // same compare function, lists are compatible
618
1f5a8f6f3015 #219 array list: implement compare
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parents: 528
diff changeset
270 return list->cl->compare(list, other);
1f5a8f6f3015 #219 array list: implement compare
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
271 } else {
628
1e2be40f0cb5 use //-style single line comments everywhere
Mike Becker <universe@uap-core.de>
parents: 618
diff changeset
272 // different compare functions, use iterator
618
1f5a8f6f3015 #219 array list: implement compare
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
273 if (list->size == other->size) {
655
7340c4255f1f implement backwards iterator - fixes #238
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parents: 647
diff changeset
274 CxIterator left = cxListIterator(list);
7340c4255f1f implement backwards iterator - fixes #238
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parents: 647
diff changeset
275 CxIterator right = cxListIterator(other);
618
1f5a8f6f3015 #219 array list: implement compare
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
276 for (size_t i = 0; i < list->size; i++) {
630
ac5e7f789048 separate iterators and mutating iterators
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parents: 628
diff changeset
277 void *leftValue = cxIteratorCurrent(left);
ac5e7f789048 separate iterators and mutating iterators
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parents: 628
diff changeset
278 void *rightValue = cxIteratorCurrent(right);
618
1f5a8f6f3015 #219 array list: implement compare
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
279 int d = list->cmpfunc(leftValue, rightValue);
1f5a8f6f3015 #219 array list: implement compare
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
280 if (d != 0) {
1f5a8f6f3015 #219 array list: implement compare
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
281 return d;
1f5a8f6f3015 #219 array list: implement compare
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
282 }
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 628
diff changeset
283 cxIteratorNext(left);
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 628
diff changeset
284 cxIteratorNext(right);
618
1f5a8f6f3015 #219 array list: implement compare
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
285 }
1f5a8f6f3015 #219 array list: implement compare
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parents: 528
diff changeset
286 return 0;
1f5a8f6f3015 #219 array list: implement compare
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
287 } else {
1f5a8f6f3015 #219 array list: implement compare
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parents: 528
diff changeset
288 return list->size < other->size ? -1 : 1;
1f5a8f6f3015 #219 array list: implement compare
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
289 }
1f5a8f6f3015 #219 array list: implement compare
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
290 }
1f5a8f6f3015 #219 array list: implement compare
Mike Becker <universe@uap-core.de>
parents: 528
diff changeset
291 }
640
55cc3b373c5e simplify list class - fixes #236
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
292
655
7340c4255f1f implement backwards iterator - fixes #238
Mike Becker <universe@uap-core.de>
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293 CxMutIterator cxListMutIteratorAt(
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294 CxList *list,
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295 size_t index
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296 ) {
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297 CxIterator it = list->cl->iterator(list, index, false);
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298 it.base.mutating = true;
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299
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300 // we know the iterators share the same memory layout
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301 CxMutIterator iter;
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302 memcpy(&iter, &it, sizeof(CxMutIterator));
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303 return iter;
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304 }
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305
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306 CxMutIterator cxListMutBackwardsIteratorAt(
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307 CxList *list,
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308 size_t index
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309 ) {
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310 CxIterator it = list->cl->iterator(list, index, true);
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311 it.base.mutating = true;
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312
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313 // we know the iterators share the same memory layout
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314 CxMutIterator iter;
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315 memcpy(&iter, &it, sizeof(CxMutIterator));
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316 return iter;
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317 }

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