Zyan Core Library (Zycore-C)
Original Author : Florian Bernd
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
***************************************************************************************************/
* @file
* Implements a doubly linked list.
*/
#ifndef ZYCORE_LIST_H
#define ZYCORE_LIST_H
#include <Zycore/Allocator.h>
#include <Zycore/Object.h>
#include <Zycore/Status.h>
#include <Zycore/Types.h>
#ifdef __cplusplus
extern "C" {
#endif
* Defines the `ZyanListNode` struct.
*
* All fields in this struct should be considered as "private". Any changes may lead to unexpected
* behavior.
*/
typedef struct ZyanListNode_
{
* A pointer to the previous list node.
*/
struct ZyanListNode_* prev;
* A pointer to the next list node.
*/
struct ZyanListNode_* next;
} ZyanListNode;
* Defines the `ZyanList` struct.
*
* All fields in this struct should be considered as "private". Any changes may lead to unexpected
* behavior.
*/
typedef struct ZyanList_
{
* The memory allocator.
*/
ZyanAllocator* allocator;
* The current number of elements in the list.
*/
ZyanUSize size;
* The size of a single element in bytes.
*/
ZyanUSize element_size;
* The element destructor callback.
*/
ZyanMemberProcedure destructor;
* The head node.
*/
ZyanListNode* head;
* The tail node.
*/
ZyanListNode* tail;
* The data buffer.
*
* Only used for instances created by `ZyanListInitCustomBuffer`.
*/
void* buffer;
* The data buffer capacity (number of bytes).
*
* Only used for instances created by `ZyanListInitCustomBuffer`.
*/
ZyanUSize capacity;
* The first unused node.
*
* When removing a node, the first-unused value is updated to point at the removed node and the
* next node of the removed node will be updated to point at the old first-unused node.
*
* When appending the memory of the first unused-node is recycled to store the new node. The
* value of the first-unused node is then updated to point at the reused nodes next node.
*
* If the first-unused value is `ZYAN_NULL`, any new node will be "allocated" behind the tail
* node (if there is enough space left in the fixed size buffer).
*
* Only used for instances created by `ZyanListInitCustomBuffer`.
*/
ZyanListNode* first_unused;
} ZyanList;
* Defines an uninitialized `ZyanList` instance.
*/
#define ZYAN_LIST_INITIALIZER \
{ \
/* allocator */ ZYAN_NULL, \
/* size */ 0, \
/* element_size */ 0, \
/* head */ ZYAN_NULL, \
/* destructor */ ZYAN_NULL, \
/* tail */ ZYAN_NULL, \
/* buffer */ ZYAN_NULL, \
/* capacity */ 0, \
/* first_unused */ ZYAN_NULL \
}
* Returns the data value of the given `node`.
*
* @param type The desired value type.
* @param node A pointer to the `ZyanListNode` struct.
*
* @result The data value of the given `node`.
*
* Note that this function is unsafe and might dereference a null-pointer.
*/
#ifdef __cplusplus
#define ZYAN_LIST_GET(type, node) \
(*reinterpret_cast<const type*>(ZyanListGetNodeData(node)))
#else
#define ZYAN_LIST_GET(type, node) \
(*(const type*)ZyanListGetNodeData(node))
#endif
#ifndef ZYAN_NO_LIBC
* Initializes the given `ZyanList` instance.
*
* @param list A pointer to the `ZyanList` instance.
* @param element_size The size of a single element in bytes.
* @param destructor A destructor callback that is invoked every time an item is deleted, or
* `ZYAN_NULL` if not needed.
*
* @return A zyan status code.
*
* The memory for the list elements is dynamically allocated by the default allocator.
*
* Finalization with `ZyanListDestroy` is required for all instances created by this function.
*/
ZYCORE_EXPORT ZYAN_REQUIRES_LIBC ZyanStatus ZyanListInit(ZyanList* list, ZyanUSize element_size,
ZyanMemberProcedure destructor);
#endif
* Initializes the given `ZyanList` instance and sets a custom `allocator`.
*
* @param list A pointer to the `ZyanList` instance.
* @param element_size The size of a single element in bytes.
* @param destructor A destructor callback that is invoked every time an item is deleted, or
* `ZYAN_NULL` if not needed.
* @param allocator A pointer to a `ZyanAllocator` instance.
*
* @return A zyan status code.
*
* Finalization with `ZyanListDestroy` is required for all instances created by this function.
*/
ZYCORE_EXPORT ZyanStatus ZyanListInitEx(ZyanList* list, ZyanUSize element_size,
ZyanMemberProcedure destructor, ZyanAllocator* allocator);
* Initializes the given `ZyanList` instance and configures it to use a custom user
* defined buffer with a fixed size.
*
* @param list A pointer to the `ZyanList` instance.
* @param element_size The size of a single element in bytes.
* @param destructor A destructor callback that is invoked every time an item is deleted, or
* `ZYAN_NULL` if not needed.
* @param buffer A pointer to the buffer that is used as storage for the elements.
* @param capacity The maximum capacity (number of bytes) of the buffer including the
* space required for the list-nodes.
*
* @return A zyan status code.
*
* The buffer capacity required to store `n` elements of type `T` is be calculated by:
* `size = n * sizeof(ZyanListNode) + n * sizeof(T)`
*
* Finalization is not required for instances created by this function.
*/
ZYCORE_EXPORT ZyanStatus ZyanListInitCustomBuffer(ZyanList* list, ZyanUSize element_size,
ZyanMemberProcedure destructor, void* buffer, ZyanUSize capacity);
* Destroys the given `ZyanList` instance.
*
* @param list A pointer to the `ZyanList` instance.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListDestroy(ZyanList* list);
#ifndef ZYAN_NO_LIBC
* Initializes a new `ZyanList` instance by duplicating an existing list.
*
* @param destination A pointer to the (uninitialized) destination `ZyanList` instance.
* @param source A pointer to the source list.
*
* @return A zyan status code.
*
* The memory for the list is dynamically allocated by the default allocator.
*
* Finalization with `ZyanListDestroy` is required for all instances created by this function.
*/
ZYCORE_EXPORT ZYAN_REQUIRES_LIBC ZyanStatus ZyanListDuplicate(ZyanList* destination,
const ZyanList* source);
#endif
* Initializes a new `ZyanList` instance by duplicating an existing list and sets a
* custom `allocator`.
*
* @param destination A pointer to the (uninitialized) destination `ZyanList` instance.
* @param source A pointer to the source list.
* @param allocator A pointer to a `ZyanAllocator` instance.
*
* @return A zyan status code.
* Finalization with `ZyanListDestroy` is required for all instances created by this function.
*/
ZYCORE_EXPORT ZyanStatus ZyanListDuplicateEx(ZyanList* destination, const ZyanList* source,
ZyanAllocator* allocator);
* Initializes a new `ZyanList` instance by duplicating an existing list and
* configures it to use a custom user defined buffer with a fixed size.
*
* @param destination A pointer to the (uninitialized) destination `ZyanList` instance.
* @param source A pointer to the source list.
* @param buffer A pointer to the buffer that is used as storage for the elements.
* @param capacity The maximum capacity (number of bytes) of the buffer including the
* space required for the list-nodes.
* This function will fail, if the capacity of the buffer is not sufficient
* to store all elements of the source list.
*
* @return A zyan status code.
*
* The buffer capacity required to store `n` elements of type `T` is be calculated by:
* `size = n * sizeof(ZyanListNode) + n * sizeof(T)`
*
* Finalization is not required for instances created by this function.
*/
ZYCORE_EXPORT ZyanStatus ZyanListDuplicateCustomBuffer(ZyanList* destination,
const ZyanList* source, void* buffer, ZyanUSize capacity);
* Returns a pointer to the first `ZyanListNode` struct of the given list.
*
* @param list A pointer to the `ZyanList` instance.
* @param node Receives a pointer to the first `ZyanListNode` struct of the list.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListGetHeadNode(const ZyanList* list, const ZyanListNode** node);
* Returns a pointer to the last `ZyanListNode` struct of the given list.
*
* @param list A pointer to the `ZyanList` instance.
* @param node Receives a pointer to the last `ZyanListNode` struct of the list.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListGetTailNode(const ZyanList* list, const ZyanListNode** node);
* Receives a pointer to the previous `ZyanListNode` struct linked to the passed one.
*
* @param node Receives a pointer to the previous `ZyanListNode` struct linked to the passed
* one.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListGetPrevNode(const ZyanListNode** node);
* Receives a pointer to the next `ZyanListNode` struct linked to the passed one.
*
* @param node Receives a pointer to the next `ZyanListNode` struct linked to the passed one.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListGetNextNode(const ZyanListNode** node);
* Returns a constant pointer to the data of the given `node`.
*
* @param node A pointer to the `ZyanListNode` struct.
*
* @return A constant pointer to the the data of the given `node` or `ZYAN_NULL`, if an error
* occured.
*
* Take a look at `ZyanListGetNodeDataEx`, if you need a function that returns a zyan status code.
*/
ZYCORE_EXPORT const void* ZyanListGetNodeData(const ZyanListNode* node);
* Returns a constant pointer to the data of the given `node`..
*
* @param node A pointer to the `ZyanListNode` struct.
* @param value Receives a constant pointer to the data of the given `node`.
*
* Take a look at `ZyanListGetNodeData`, if you need a function that directly returns a pointer.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListGetNodeDataEx(const ZyanListNode* node, const void** value);
* Returns a mutable pointer to the data of the given `node`.
*
* @param node A pointer to the `ZyanListNode` struct.
*
* @return A mutable pointer to the the data of the given `node` or `ZYAN_NULL`, if an error
* occured.
*
* Take a look at `ZyanListGetPointerMutableEx` instead, if you need a function that returns a
* zyan status code.
*/
ZYCORE_EXPORT void* ZyanListGetNodeDataMutable(const ZyanListNode* node);
* Returns a mutable pointer to the data of the given `node`..
*
* @param node A pointer to the `ZyanListNode` struct.
* @param value Receives a mutable pointer to the data of the given `node`.
*
* Take a look at `ZyanListGetNodeDataMutable`, if you need a function that directly returns a
* pointer.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListGetNodeDataMutableEx(const ZyanListNode* node, void** value);
* Assigns a new data value to the given `node`.
*
* @param list A pointer to the `ZyanList` instance.
* @param node A pointer to the `ZyanListNode` struct.
* @param value The value to assign.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListSetNodeData(const ZyanList* list, const ZyanListNode* node,
const void* value);
* Adds a new `item` to the end of the list.
*
* @param list A pointer to the `ZyanList` instance.
* @param item A pointer to the item to add.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListPushBack(ZyanList* list, const void* item);
* Adds a new `item` to the beginning of the list.
*
* @param list A pointer to the `ZyanList` instance.
* @param item A pointer to the item to add.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListPushFront(ZyanList* list, const void* item);
* Constructs an `item` in-place at the end of the list.
*
* @param list A pointer to the `ZyanList` instance.
* @param item Receives a pointer to the new item.
* @param constructor The constructor callback or `ZYAN_NULL`. The new item will be in
* undefined state, if no constructor was passed.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListEmplaceBack(ZyanList* list, void** item,
ZyanMemberFunction constructor);
* Constructs an `item` in-place at the beginning of the list.
*
* @param list A pointer to the `ZyanList` instance.
* @param item Receives a pointer to the new item.
* @param constructor The constructor callback or `ZYAN_NULL`. The new item will be in
* undefined state, if no constructor was passed.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListEmplaceFront(ZyanList* list, void** item,
ZyanMemberFunction constructor);
* Removes the last element of the list.
*
* @param list A pointer to the `ZyanList` instance.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListPopBack(ZyanList* list);
* Removes the firstelement of the list.
*
* @param list A pointer to the `ZyanList` instance.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListPopFront(ZyanList* list);
* Removes the given `node` from the list.
*
* @param list A pointer to the `ZyanList` instance.
* @param node A pointer to the `ZyanListNode` struct.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListRemove(ZyanList* list, const ZyanListNode* node);
* Removes multiple nodes from the list.
*
* @param list A pointer to the `ZyanList` instance.
* @param first A pointer to the first node.
* @param last A pointer to the last node.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListRemoveRange(ZyanList* list, const ZyanListNode* first,
const ZyanListNode* last);
* Erases all elements of the list.
*
* @param list A pointer to the `ZyanList` instance.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListClear(ZyanList* list);
* Resizes the given `ZyanList` instance.
*
* @param list A pointer to the `ZyanList` instance.
* @param size The new size of the list.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListResize(ZyanList* list, ZyanUSize size);
* Resizes the given `ZyanList` instance.
*
* @param list A pointer to the `ZyanList` instance.
* @param size The new size of the list.
* @param initializer A pointer to a value to be used as initializer for new items.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListResizeEx(ZyanList* list, ZyanUSize size, const void* initializer);
* Returns the current size of the list.
*
* @param list A pointer to the `ZyanList` instance.
* @param size Receives the size of the list.
*
* @return A zyan status code.
*/
ZYCORE_EXPORT ZyanStatus ZyanListGetSize(const ZyanList* list, ZyanUSize* size);
#ifdef __cplusplus
}
#endif
#endif
