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#include "alloc.h"
#include "common.h"
#include "list.h"
List* List_Create() {
List* list = (List*)kmalloc(sizeof(List));
memset((uint8*)list, 0, sizeof(List));
return list;
}
void List_Clear(List* list) {
ListNode* listNode = list->head;
while (NULL != listNode) {
ListNode* next = listNode->next;
kfree(listNode);
listNode = next;
}
list->head = NULL;
list->tail = NULL;
}
void List_Destroy(List* list) {
List_Clear(list);
kfree(list);
}
List* List_CreateClone(List* list) {
List* newList = List_Create();
List_Foreach(n, list) {
List_Append(newList, n->data);
}
return newList;
}
BOOL List_IsEmpty(List* list) {
//At empty state, both head and tail are null!
return list->head == NULL;
}
void List_Append(List* list, void* data) {
ListNode* node = (ListNode*)kmalloc(sizeof(ListNode));
memset((uint8*)node, 0, sizeof(ListNode));
node->data = data;
//At empty state, both head and tail are null!
if (NULL == list->tail) {
list->head = node;
list->tail = node;
return;
}
node->previous = list->tail;
node->previous->next = node;
list->tail = node;
}
void List_Prepend(List* list, void* data) {
ListNode* node = (ListNode*)kmalloc(sizeof(ListNode));
memset((uint8*)node, 0, sizeof(ListNode));
node->data = data;
//At empty state, both head and tail are null!
if (NULL == list->tail) {
list->head = node;
list->tail = node;
return;
}
node->next = list->head;
node->next->previous = node;
list->head = node;
}
ListNode* List_GetFirstNode(List* list) {
return list->head;
}
ListNode* List_GetLastNode(List* list) {
return list->tail;
}
ListNode* List_FindFirstOccurrence(List* list, void* data) {
List_Foreach(n, list) {
if (n->data == data) {
return n;
}
}
return NULL;
}
int List_FindFirstOccurrenceIndex(List* list, void* data) {
int result = 0;
List_Foreach(n, list) {
if (n->data == data) {
return result;
}
++result;
}
return -1;
}
int List_GetCount(List* list) {
int result = 0;
List_Foreach(n, list) {
++result;
}
return result;
}
void List_RemoveNode(List* list, ListNode* node) {
if (NULL == node) {
return;
}
if (NULL != node->previous) {
node->previous->next = node->next;
}
if (NULL != node->next) {
node->next->previous = node->previous;
}
if (node == list->head) {
list->head = node->next;
}
if (node == list->tail) {
list->tail = node->previous;
}
kfree(node);
}
void List_RemoveFirstNode(List* list) {
if (NULL != list->head) {
List_RemoveNode(list, list->head);
}
}
void List_RemoveLastNode(List* list) {
if (NULL != list->tail) {
List_RemoveNode(list, list->tail);
}
}
void List_RemoveFirstOccurrence(List* list, void* data) {
ListNode* node = List_FindFirstOccurrence(list, data);
if (NULL != node) {
List_RemoveNode(list, node);
}
}
Stack* Stack_Create() {
Stack* stack = (Stack*)kmalloc(sizeof(Stack));
memset((uint8*)stack, 0, sizeof(Stack));
stack->list = List_Create();
return stack;
}
void Stack_Clear(Stack* stack) {
List_Clear(stack->list);
}
void Stack_Destroy(Stack* stack) {
List_Destroy(stack->list);
kfree(stack);
}
BOOL Stack_IsEmpty(Stack* stack) {
return List_IsEmpty(stack->list);
}
void Stack_Push(Stack* stack, void* data) {
List_Prepend(stack->list, data);
}
void* Stack_Pop(Stack* stack) {
void* result = NULL;
ListNode* node = List_GetFirstNode(stack->list);
if (NULL != node) {
result = node->data;
List_RemoveNode(stack->list, node);
}
return result;
}
Queue* Queue_Create() {
Queue* queue = (Queue*)kmalloc(sizeof(Queue));
memset((uint8*)queue, 0, sizeof(Queue));
queue->list = List_Create();
return queue;
}
void Queue_Clear(Queue* queue) {
List_Clear(queue->list);
}
void Queue_Destroy(Queue* queue) {
List_Destroy(queue->list);
kfree(queue);
}
BOOL Queue_IsEmpty(Queue* queue) {
return List_IsEmpty(queue->list);
}
void Queue_Enqueue(Queue* queue, void* data) {
List_Append(queue->list, data);
}
void* Queue_Dequeue(Queue* stack) {
void* result = NULL;
ListNode* node = List_GetFirstNode(stack->list);
if (NULL != node) {
result = node->data;
List_RemoveNode(stack->list, node);
}
return result;
}
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