base.cpp

来自「仅作参考。 测试环境：WinXP + VC6.0+sp6 Redhat L」· C++ 代码 · 共 106 行

#include "../include/base.h"

Stack::Stack()
{
	m_stack.top = NULL;
	m_list = NULL;
}
Stack::~Stack()
{
	list_t* plist = pop(&m_stack);
	while(plist != NULL)
	{			
		free(plist);
		plist = NULL;
		plist = pop(&m_stack);
	}
	plist = m_list;
	while(plist != NULL)
	{
		m_list = plist->prev;
		plist->prev = NULL;
		plist->next = NULL;
		free(plist);
		plist = m_list;
	}
}
void Stack::Push(char* value)
{
	push(&m_stack,value);
}
char* Stack::Pop()
{
	char* retValue = NULL;
	list_t* plist = pop(&m_stack);
	if(plist != NULL)
	{
		retValue = plist->item;
	}
	if(m_list != NULL)
	{
		m_list->next = plist;
		if(plist != NULL)
		{
			plist->prev = m_list;
			plist->next = NULL;
		}
	}
	if(plist != NULL)
	{
		m_list = plist;
	}
	return retValue;
}
Queue::Queue()
{
	m_queue.front = NULL;
	m_queue.rear = NULL;
	m_list = NULL;
}
Queue::~Queue()
{
	list_t* plist = dequeue(&m_queue);
	while(plist != NULL)
	{			
		free(plist);
		plist = NULL;
		plist = dequeue(&m_queue);
	}
	plist = m_list;
	while(plist != NULL)
	{
		m_list = plist->prev;
		plist->prev = NULL;
		plist->next = NULL;
		free(plist);
		plist = m_list;
	}
}
void Queue::Enqueue(char* value)
{
	enqueue(&m_queue,value);
}
char* Queue::Dequeue()
{
	char* retValue = NULL;
	list_t* plist = dequeue(&m_queue);
	if(plist != NULL)
	{
		retValue = plist->item;
	}
	if(m_list != NULL)
	{
		m_list->next = plist;
		if(plist != NULL)
		{
			plist->prev = m_list;
			plist->next = NULL;
		}
	}
	if(plist != NULL)
	{
		m_list = plist;
	}
	return retValue;
}