/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2023 Mike Becker, Olaf Wintermann All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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*/
#include "cx/map.h"
#include <string.h>
// <editor-fold desc="empty map implementation">
static void cx_empty_map_noop(__attribute__((__unused__)) CxMap *map) {
// this is a noop, but MUST be implemented
}
static void *cx_empty_map_get(
__attribute__((__unused__)) CxMap const *map,
__attribute__((__unused__)) CxHashKey key
) {
return NULL;
}
static bool cx_empty_map_iter_valid(__attribute__((__unused__)) void const *iter) {
return false;
}
static CxIterator cx_empty_map_iterator(
struct cx_map_s const *map,
__attribute__((__unused__)) enum cx_map_iterator_type type
) {
CxIterator iter = {0};
iter.src_handle = map;
iter.base.valid = cx_empty_map_iter_valid;
return iter;
}
static struct cx_map_class_s cx_empty_map_class = {
cx_empty_map_noop,
cx_empty_map_noop,
NULL,
cx_empty_map_get,
NULL,
cx_empty_map_iterator
};
CxMap cx_empty_map = {
NULL,
NULL,
0,
0,
NULL,
NULL,
NULL,
false,
&cx_empty_map_class
};
CxMap *const cxEmptyMap = &cx_empty_map;
// </editor-fold>
CxMutIterator cxMapMutIteratorValues(CxMap *map) {
CxIterator it = map->cl->iterator(map, CX_MAP_ITERATOR_VALUES);
it.base.mutating = true;
// we know the iterators share the same memory layout
CxMutIterator iter;
memcpy(&iter, &it, sizeof(CxMutIterator));
return iter;
}
CxMutIterator cxMapMutIteratorKeys(CxMap *map) {
CxIterator it = map->cl->iterator(map, CX_MAP_ITERATOR_KEYS);
it.base.mutating = true;
// we know the iterators share the same memory layout
CxMutIterator iter;
memcpy(&iter, &it, sizeof(CxMutIterator));
return iter;
}
CxMutIterator cxMapMutIterator(CxMap *map) {
CxIterator it = map->cl->iterator(map, CX_MAP_ITERATOR_PAIRS);
it.base.mutating = true;
// we know the iterators share the same memory layout
CxMutIterator iter;
memcpy(&iter, &it, sizeof(CxMutIterator));
return iter;
}