summaryrefslogtreecommitdiff
path: root/source/base/LinkedList.h
diff options
context:
space:
mode:
Diffstat (limited to 'source/base/LinkedList.h')
-rw-r--r--source/base/LinkedList.h98
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