ucx/map.c

Sun, 06 Oct 2024 18:18:04 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sun, 06 Oct 2024 18:18:04 +0200
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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 2023 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/map.h"
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30 #include <string.h>
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31
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32 // <editor-fold desc="empty map implementation">
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33
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34 static void cx_empty_map_noop(__attribute__((__unused__)) CxMap *map) {
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35 // this is a noop, but MUST be implemented
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36 }
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37
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38 static void *cx_empty_map_get(
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39 __attribute__((__unused__)) const CxMap *map,
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40 __attribute__((__unused__)) CxHashKey key
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41 ) {
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42 return NULL;
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43 }
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44
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45 static bool cx_empty_map_iter_valid(__attribute__((__unused__)) const void *iter) {
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46 return false;
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47 }
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48
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49 static CxIterator cx_empty_map_iterator(
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50 const struct cx_map_s *map,
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51 __attribute__((__unused__)) enum cx_map_iterator_type type
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52 ) {
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53 CxIterator iter = {0};
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54 iter.src_handle.c = map;
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55 iter.base.valid = cx_empty_map_iter_valid;
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56 return iter;
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57 }
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58
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59 static struct cx_map_class_s cx_empty_map_class = {
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60 cx_empty_map_noop,
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61 cx_empty_map_noop,
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62 NULL,
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63 cx_empty_map_get,
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64 NULL,
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65 cx_empty_map_iterator
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66 };
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67
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68 CxMap cx_empty_map = {
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69 {
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70 NULL,
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71 NULL,
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72 0,
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73 0,
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74 NULL,
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75 NULL,
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76 NULL,
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77 false
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78 },
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79 &cx_empty_map_class
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80 };
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81
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82 CxMap *const cxEmptyMap = &cx_empty_map;
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83
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84 // </editor-fold>
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85
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86 CxIterator cxMapMutIteratorValues(CxMap *map) {
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87 CxIterator it = map->cl->iterator(map, CX_MAP_ITERATOR_VALUES);
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88 it.base.mutating = true;
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89 return it;
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90 }
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91
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92 CxIterator cxMapMutIteratorKeys(CxMap *map) {
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93 CxIterator it = map->cl->iterator(map, CX_MAP_ITERATOR_KEYS);
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94 it.base.mutating = true;
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95 return it;
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96 }
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97
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98 CxIterator cxMapMutIterator(CxMap *map) {
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99 CxIterator it = map->cl->iterator(map, CX_MAP_ITERATOR_PAIRS);
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100 it.base.mutating = true;
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101 return it;
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102 }

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