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Diffstat (limited to 'source/base/LinkedList.h')
| -rw-r--r-- | source/base/LinkedList.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/source/base/LinkedList.h b/source/base/LinkedList.h new file mode 100644 index 0000000..1b5b851 --- /dev/null +++ b/source/base/LinkedList.h @@ -0,0 +1,98 @@ +// +// LinkedList.h - MrsWatson +// Created by Nik Reiman on 1/3/12. +// Copyright (c) 2012 Teragon Audio. All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// * Redistributions of source code must retain the above copyright notice, +// this list of conditions and the following disclaimer. +// * 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 +// POSSIBILITY OF SUCH DAMAGE. +// + +#ifndef MrsWatson_LinkedList_h +#define MrsWatson_LinkedList_h + +typedef struct { + void *item; + void *nextItem; + + // This field should be considered private, and is only valid for the head node + int _numItems; +} LinkedListMembers; + +typedef LinkedListMembers *LinkedList; +typedef LinkedListMembers *LinkedListIterator; + +typedef void (*LinkedListForeachFunc)(void *item, void *userData); +typedef void (*LinkedListFreeItemFunc)(void *item); + +/** + * Create a new linked list + * @return Linked list with no items + */ +LinkedList newLinkedList(void); + +/** + * Add an item to the end of a list + * @param self + * @param item Item to append. Items should (but do not necessarily have to be) + * of the same type. However, if items in the list are not of the same type, + * using functions such as foreachItemInList() will be much more difficult. + */ +void linkedListAppend(LinkedList self, void *item); + +/** + * Get the number of items in a list. Use this function instead of accessing + * the fields of the list, as the field names or use may change in the future. + * @param self + * @return Number of items in the list + */ +int linkedListLength(LinkedList self); + +/** + * Flatten a LinkedList to an array. The resulting array will be size N + 1, + * with a NULL object at the end of the array. + * @param self + * @return Array of void* objects with terminating NULL member + */ +void **linkedListToArray(LinkedList self); + +/** + * Iterate over each item in a linked list, calling the given function on each item. + * @param self + * @param foreachFunc Function to call + * @param userData User data to pass to the function + */ +void linkedListForeach(LinkedList self, LinkedListForeachFunc foreachFunc, void *userData); + +/** + * Free each item in a linked list. The contents of the items themselves are *not* + * freed. To do that, call freeLinkedListAndItems() instead. + * @param self + */ +void freeLinkedList(LinkedList self); + +/** + * Free a linked list and each of its items. + * @param self + * @param freeItem Free function to be called for each item + */ +void freeLinkedListAndItems(LinkedList self, LinkedListFreeItemFunc freeItem); + +#endif |
