comparison: ucx/cx/array_list.h
ucx/cx/array_list.h
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- newapi
- changeset 178
- 7c3ff86ee9d4
- parent 174
- 0358f1d9c506
- child 253
- 087cc9216f28
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| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 12 * 2. Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 26 * POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 /** | |
| 29 * \file array_list.h | |
| 30 * \brief Array list implementation. | |
| 31 * \details Also provides several low-level functions for custom array list implementations. | |
| 32 * \author Mike Becker | |
| 33 * \author Olaf Wintermann | |
| 34 * \version 3.0 | |
| 35 * \copyright 2-Clause BSD License | |
| 36 */ | |
| 37 | |
| 38 | |
| 39 #ifndef UCX_ARRAY_LIST_H | |
| 40 #define UCX_ARRAY_LIST_H | |
| 41 | |
| 42 #include "list.h" | |
| 43 | |
| 44 #ifdef __cplusplus | |
| 45 extern "C" { | |
| 46 #endif | |
| 47 | |
| 48 /** | |
| 49 * Defines a reallocation mechanism for arrays. | |
| 50 */ | |
| 51 struct cx_array_reallocator_s { | |
| 52 /** | |
| 53 * Re-allocates space for the given array. | |
| 54 * | |
| 55 * Implementations are not required to free the original array. | |
| 56 * This allows re-allocation of static memory by allocating heap memory | |
| 57 * and copying the array contents. The information in \p data can keep | |
| 58 * track of the state of the memory or other additional allocator info. | |
| 59 * | |
| 60 * @param array the array to reallocate | |
| 61 * @param capacity the new capacity (number of elements) | |
| 62 * @param elem_size the size of each element | |
| 63 * @param alloc a reference to this allocator | |
| 64 * @return a pointer to the reallocated memory or \c NULL on failure | |
| 65 */ | |
| 66 void *(*realloc)( | |
| 67 void *array, | |
| 68 size_t capacity, | |
| 69 size_t elem_size, | |
| 70 struct cx_array_reallocator_s *alloc | |
| 71 ); | |
| 72 | |
| 73 /** | |
| 74 * Custom data pointer. | |
| 75 */ | |
| 76 void *ptr1; | |
| 77 /** | |
| 78 * Custom data pointer. | |
| 79 */ | |
| 80 void *ptr2; | |
| 81 /** | |
| 82 * Custom data integer. | |
| 83 */ | |
| 84 size_t int1; | |
| 85 /** | |
| 86 * Custom data integer. | |
| 87 */ | |
| 88 size_t int2; | |
| 89 }; | |
| 90 | |
| 91 /** | |
| 92 * Return codes for cx_array_copy(). | |
| 93 */ | |
| 94 enum cx_array_copy_result { | |
| 95 CX_ARRAY_COPY_SUCCESS, | |
| 96 CX_ARRAY_COPY_REALLOC_NOT_SUPPORTED, | |
| 97 CX_ARRAY_COPY_REALLOC_FAILED, | |
| 98 }; | |
| 99 | |
| 100 /** | |
| 101 * Copies elements from one array to another. | |
| 102 * | |
| 103 * The elements are copied to the \p target array at the specified \p index, | |
| 104 * overwriting possible elements. The \p index does not need to be in range of | |
| 105 * the current array \p size. If the new index plus the number of elements added | |
| 106 * would extend the array's size, and \p capacity is not \c NULL, the remaining | |
| 107 * capacity is used. | |
| 108 * | |
| 109 * If the capacity is insufficient to hold the new data, a reallocation | |
| 110 * attempt is made, unless the allocator is set to \c NULL, in which case | |
| 111 * this function ultimately returns a failure. | |
| 112 * | |
| 113 * @param target the target array | |
| 114 * @param size a pointer to the size of the target array | |
| 115 * @param capacity a pointer to the target array's capacity - | |
| 116 * \c NULL if only the size shall be used to bound the array | |
| 117 * @param index the index where the copied elements shall be placed | |
| 118 * @param src the source array | |
| 119 * @param elem_size the size of one element | |
| 120 * @param elem_count the number of elements to copy | |
| 121 * @param reallocator the array re-allocator to use, or \c NULL | |
| 122 * if re-allocation shall not happen | |
| 123 * @return zero on success, non-zero error code on failure | |
| 124 */ | |
| 125 enum cx_array_copy_result cx_array_copy( | |
| 126 void **target, | |
| 127 size_t *size, | |
| 128 size_t *capacity, | |
| 129 size_t index, | |
| 130 void const *src, | |
| 131 size_t elem_size, | |
| 132 size_t elem_count, | |
| 133 struct cx_array_reallocator_s *reallocator | |
| 134 ) __attribute__((__nonnull__(1, 2, 5))); | |
| 135 | |
| 136 | |
| 137 /** | |
| 138 * Swaps two array elements. | |
| 139 * | |
| 140 * @param arr the array | |
| 141 * @param elem_size the element size | |
| 142 * @param idx1 index of first element | |
| 143 * @param idx2 index of second element | |
| 144 */ | |
| 145 void cx_array_swap( | |
| 146 void *arr, | |
| 147 size_t elem_size, | |
| 148 size_t idx1, | |
| 149 size_t idx2 | |
| 150 ) __attribute__((__nonnull__)); | |
| 151 | |
| 152 /** | |
| 153 * Allocates an array list for storing elements with \p item_size bytes each. | |
| 154 * | |
| 155 * If \p item_size is CX_STORE_POINTERS, the created list will be created as if | |
| 156 * cxListStorePointers() was called immediately after creation. | |
| 157 * | |
| 158 * @param allocator the allocator for allocating the list memory | |
| 159 * (if \c NULL the cxDefaultAllocator will be used) | |
| 160 * @param comparator the comparator for the elements | |
| 161 * (if \c NULL sort and find functions will not work) | |
| 162 * @param item_size the size of each element in bytes | |
| 163 * @param initial_capacity the initial number of elements the array can store | |
| 164 * @return the created list | |
| 165 */ | |
| 166 CxList *cxArrayListCreate( | |
| 167 CxAllocator const *allocator, | |
| 168 cx_compare_func comparator, | |
| 169 size_t item_size, | |
| 170 size_t initial_capacity | |
| 171 ); | |
| 172 | |
| 173 /** | |
| 174 * Allocates an array list for storing elements with \p item_size bytes each. | |
| 175 * | |
| 176 * The list will use the cxDefaultAllocator and \em NO compare function. | |
| 177 * If you want to call functions that need a compare function, you have to | |
| 178 * set it immediately after creation or use cxArrayListCreate(). | |
| 179 * | |
| 180 * If \p item_size is CX_STORE_POINTERS, the created list will be created as if | |
| 181 * cxListStorePointers() was called immediately after creation. | |
| 182 * | |
| 183 * @param item_size the size of each element in bytes | |
| 184 * @param initial_capacity the initial number of elements the array can store | |
| 185 * @return the created list | |
| 186 */ | |
| 187 #define cxArrayListCreateSimple(item_size, initial_capacity) \ | |
| 188 cxArrayListCreate(NULL, NULL, item_size, initial_capacity) | |
| 189 | |
| 190 #ifdef __cplusplus | |
| 191 } // extern "C" | |
| 192 #endif | |
| 193 | |
| 194 #endif // UCX_ARRAY_LIST_H |
