105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
/**
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* Copyright (c) 2014-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#include "CSSNodeList.h"
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extern CSSMalloc gCSSMalloc;
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extern CSSRealloc gCSSRealloc;
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extern CSSFree gCSSFree;
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struct CSSNodeList {
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uint32_t capacity;
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uint32_t count;
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CSSNodeRef *items;
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};
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CSSNodeListRef CSSNodeListNew(const uint32_t initialCapacity) {
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const CSSNodeListRef list = gCSSMalloc(sizeof(struct CSSNodeList));
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CSS_ASSERT(list != NULL, "Could not allocate memory for list");
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list->capacity = initialCapacity;
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list->count = 0;
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list->items = gCSSMalloc(sizeof(CSSNodeRef) * list->capacity);
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CSS_ASSERT(list->items != NULL, "Could not allocate memory for items");
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return list;
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}
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void CSSNodeListFree(const CSSNodeListRef list) {
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if (list) {
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gCSSFree(list->items);
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gCSSFree(list);
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}
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}
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uint32_t CSSNodeListCount(const CSSNodeListRef list) {
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if (list) {
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return list->count;
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}
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return 0;
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}
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void CSSNodeListAdd(CSSNodeListRef *listp, const CSSNodeRef node) {
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if (!*listp) {
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*listp = CSSNodeListNew(4);
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}
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CSSNodeListInsert(listp, node, (*listp)->count);
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}
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void CSSNodeListInsert(CSSNodeListRef *listp, const CSSNodeRef node, const uint32_t index) {
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if (!*listp) {
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*listp = CSSNodeListNew(4);
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}
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CSSNodeListRef list = *listp;
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if (list->count == list->capacity) {
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list->capacity *= 2;
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list->items = gCSSRealloc(list->items, sizeof(CSSNodeRef) * list->capacity);
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CSS_ASSERT(list->items != NULL, "Could not extend allocation for items");
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}
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for (uint32_t i = list->count; i > index; i--) {
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list->items[i] = list->items[i - 1];
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}
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list->count++;
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list->items[index] = node;
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}
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CSSNodeRef CSSNodeListRemove(const CSSNodeListRef list, const uint32_t index) {
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const CSSNodeRef removed = list->items[index];
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list->items[index] = NULL;
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for (uint32_t i = index; i < list->count - 1; i++) {
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list->items[i] = list->items[i + 1];
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list->items[i + 1] = NULL;
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}
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list->count--;
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return removed;
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}
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CSSNodeRef CSSNodeListDelete(const CSSNodeListRef list, const CSSNodeRef node) {
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for (uint32_t i = 0; i < list->count; i++) {
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if (list->items[i] == node) {
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return CSSNodeListRemove(list, i);
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}
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}
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return NULL;
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}
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CSSNodeRef CSSNodeListGet(const CSSNodeListRef list, const uint32_t index) {
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if (CSSNodeListCount(list) > 0) {
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return list->items[index];
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}
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return NULL;
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}
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