Mon, 18 Apr 2022 16:29:14 +0200
simplify destructor signature (but loads more responsibility onto the user)
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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/tree.h" |
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30 | #include <gtest/gtest.h> |
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31 | |
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32 | struct TestNode { |
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33 | TestNode *parent = nullptr; |
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34 | TestNode *prev = nullptr; |
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35 | TestNode *next = nullptr; |
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36 | |
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37 | TestNode *children_begin = nullptr; |
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38 | TestNode *children_end = nullptr; |
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39 | }; |
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40 | |
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41 | TEST(Tree, cx_tree_add_sibling) { |
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42 | // prepare test tree |
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43 | TestNode root, a; |
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44 | root.children_begin = &a; |
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45 | root.children_end = &a; |
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46 | a.parent = &root; |
449 | 47 | |
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48 | // new test nodes |
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49 | TestNode b, c; |
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50 | |
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51 | // test |
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52 | cx_tree_add_sibling(&a, offsetof(TestNode, prev), offsetof(TestNode, next), offsetof(TestNode, parent), &b); |
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53 | EXPECT_EQ(b.parent, &root); |
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54 | EXPECT_EQ(b.prev, &a); |
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55 | EXPECT_EQ(b.next, nullptr); |
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56 | EXPECT_EQ(a.next, &b); |
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57 | |
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58 | cx_tree_add_sibling(&a, -1, offsetof(TestNode, next), -1, &c); |
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59 | EXPECT_EQ(c.parent, nullptr); |
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60 | EXPECT_EQ(c.prev, nullptr); |
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61 | EXPECT_EQ(c.next, nullptr); |
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62 | EXPECT_EQ(b.next, &c); |
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63 | } |
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64 | |
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65 | TEST(Tree, cx_tree_add_child) { |
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66 | TestNode root, a, b, c, a1; |
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67 | |
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68 | cx_tree_add_child( |
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69 | (void **) &root.children_begin, |
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70 | (void **) &root.children_end, |
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71 | offsetof(TestNode, prev), |
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72 | offsetof(TestNode, next), |
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73 | &a, |
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74 | offsetof(TestNode, parent), |
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75 | &root); |
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76 | EXPECT_EQ(root.children_begin, &a); |
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77 | EXPECT_EQ(root.children_end, &a); |
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78 | EXPECT_EQ(a.parent, &root); |
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79 | EXPECT_EQ(a.prev, nullptr); |
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80 | EXPECT_EQ(a.next, nullptr); |
449 | 81 | |
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82 | cx_tree_add_child( |
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83 | (void **) &root.children_begin, |
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84 | (void **) &root.children_end, |
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85 | offsetof(TestNode, prev), |
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86 | offsetof(TestNode, next), |
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87 | &b, |
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88 | offsetof(TestNode, parent), |
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89 | &root); |
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90 | EXPECT_EQ(root.children_begin, &a); |
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91 | EXPECT_EQ(root.children_begin->next, &b); |
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92 | EXPECT_EQ(root.children_end, &b); |
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93 | EXPECT_EQ(b.parent, &root); |
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94 | EXPECT_EQ(b.prev, &a); |
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95 | |
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96 | cx_tree_add_child( |
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97 | (void **) &root.children_begin, |
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98 | nullptr, |
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99 | -1, |
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100 | offsetof(TestNode, next), |
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101 | &c, |
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102 | -1, |
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103 | &root); |
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104 | EXPECT_EQ(root.children_end, &b); // children_end unchanged |
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105 | EXPECT_EQ(b.next, &c); |
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106 | EXPECT_EQ(c.prev, nullptr); |
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107 | EXPECT_EQ(c.next, nullptr); |
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108 | EXPECT_EQ(c.parent, nullptr); |
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109 | |
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110 | cx_tree_add_child( |
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111 | (void **) &a.children_begin, |
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112 | (void **) &a.children_end, |
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113 | offsetof(TestNode, prev), |
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114 | offsetof(TestNode, next), |
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115 | &a1, |
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116 | offsetof(TestNode, parent), |
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117 | &a); |
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118 | EXPECT_EQ(a.children_begin, &a1); |
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119 | EXPECT_EQ(a1.parent, &a); |
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120 | EXPECT_EQ(root.children_begin, &a); |
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121 | EXPECT_EQ(root.children_begin->children_begin, &a1); |
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122 | } |