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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
// ============================================================
//
// List.hpp
//
//
// Defines the List class
//
// ============================================================
#ifndef __BINDER__LIST_HPP__
#define __BINDER__LIST_HPP__
#include "bindertypes.hpp"
#include "ex.h"
namespace BINDER_SPACE
{
// Ripped from Fusion
//
// ListNode
//
typedef void *LISTNODE;
template <class Type> class ListNode
{
public:
ListNode(Type item);
virtual ~ListNode();
void SetNext(ListNode *pNode);
void SetPrev(ListNode *pNode);
Type GetItem();
ListNode *GetNext();
ListNode *GetPrev();
private:
Type _type;
ListNode *_pNext;
ListNode *_pPrev;
};
//
// List
//
template <class Type> class List
{
public:
List();
~List();
LISTNODE AddHead(const Type &item);
LISTNODE AddTail(const Type &item);
LISTNODE GetHeadPosition();
LISTNODE GetTailPosition();
void RemoveAt(LISTNODE pNode);
void RemoveAll();
LISTNODE Find(const Type &item);
int GetCount();
Type GetNext(LISTNODE &pNode);
Type GetAt(LISTNODE pNode);
LISTNODE AddSorted(const Type &item, LPVOID pfn);
public:
DWORD _dwSig;
private:
ListNode<Type> *_pHead;
ListNode<Type> *_pTail;
int _iCount;
};
//
// ListNode Implementation
//
template <class Type> ListNode<Type>::ListNode(Type item)
: _type(item)
, _pNext(NULL)
, _pPrev(NULL)
{
}
template <class Type> ListNode<Type>::~ListNode()
{
}
template <class Type> void ListNode<Type>::SetNext(ListNode *pNode)
{
_pNext = pNode;
}
template <class Type> void ListNode<Type>::SetPrev(ListNode *pNode)
{
_pPrev = pNode;
}
template <class Type> Type ListNode<Type>::GetItem()
{
return _type;
}
template <class Type> ListNode<Type> *ListNode<Type>::GetNext()
{
return _pNext;
}
template <class Type> ListNode<Type> *ListNode<Type>::GetPrev()
{
return _pPrev;
}
//
// List Implementation
//
template <class Type> List<Type>::List()
: _pHead(NULL)
, _pTail(NULL)
, _iCount(0)
{
_dwSig = 0x5453494c; /* 'TSIL' */
}
template <class Type> List<Type>::~List()
{
HRESULT hr = S_OK;
EX_TRY
{
RemoveAll();
}
EX_CATCH_HRESULT(hr);
}
template <class Type> LISTNODE List<Type>::AddHead(const Type &item)
{
ListNode<Type> *pNode = NULL;
NEW_CONSTR(pNode, ListNode<Type>(item));
if (pNode) {
_iCount++;
pNode->SetNext(_pHead);
pNode->SetPrev(NULL);
if (_pHead == NULL) {
_pTail = pNode;
}
else {
_pHead->SetPrev(pNode);
}
_pHead = pNode;
}
return (LISTNODE)pNode;
}
template <class Type> LISTNODE List<Type>::AddSorted(const Type &item,
LPVOID pfn)
{
ListNode<Type> *pNode = NULL;
LISTNODE pCurrNode = NULL;
LISTNODE pPrevNode = NULL;
int i;
Type curItem;
LONG (*pFN) (const Type item1, const Type item2);
pFN = (LONG (*) (const Type item1, const Type item2))pfn;
if(_pHead == NULL) {
return AddHead(item);
}
else {
pCurrNode = GetHeadPosition();
curItem = ((ListNode<Type> *) pCurrNode)->GetItem();
for (i = 0; i < _iCount; i++) {
if (pFN(item, curItem) < 1) {
NEW_CONSTR(pNode, ListNode<Type>(item));
if (pNode) {
pNode->SetPrev((ListNode<Type> *)pPrevNode);
pNode->SetNext((ListNode<Type> *)pCurrNode);
// update pPrevNode
if(pPrevNode) {
((ListNode<Type> *)pPrevNode)->SetNext(pNode);
}
else {
_pHead = pNode;
}
// update pCurrNode
((ListNode<Type> *)pCurrNode)->SetPrev(pNode);
_iCount++;
}
break;
}
pPrevNode = pCurrNode;
GetNext(pCurrNode);
if(i+1 == _iCount) {
return AddTail(item);
}
else {
_ASSERTE(pCurrNode);
curItem = GetAt(pCurrNode);
}
}
}
return (LISTNODE)pNode;
}
template <class Type> LISTNODE List<Type>::AddTail(const Type &item)
{
ListNode<Type> *pNode = NULL;
NEW_CONSTR(pNode, ListNode<Type>(item));
if (pNode) {
_iCount++;
if (_pTail) {
pNode->SetPrev(_pTail);
_pTail->SetNext(pNode);
_pTail = pNode;
}
else {
_pHead = _pTail = pNode;
}
}
return (LISTNODE)pNode;
}
template <class Type> int List<Type>::GetCount()
{
return _iCount;
}
template <class Type> LISTNODE List<Type>::GetHeadPosition()
{
return (LISTNODE)_pHead;
}
template <class Type> LISTNODE List<Type>::GetTailPosition()
{
return (LISTNODE)_pTail;
}
template <class Type> Type List<Type>::GetNext(LISTNODE &pNode)
{
ListNode<Type> *pListNode = (ListNode<Type> *)pNode;
// Faults if you pass NULL
_ASSERTE(pNode);
Type item = pListNode->GetItem();
pNode = (LISTNODE)(pListNode->GetNext());
return item;
}
template <class Type> void List<Type>::RemoveAll()
{
int i;
LISTNODE listNode = NULL;
ListNode<Type> *pDelNode = NULL;
listNode = GetHeadPosition();
for (i = 0; i < _iCount; i++) {
pDelNode = (ListNode<Type> *)listNode;
GetNext(listNode);
SAFE_DELETE(pDelNode);
}
_iCount = 0;
_pHead = NULL;
_pTail = NULL;
}
template <class Type> void List<Type>::RemoveAt(LISTNODE pNode)
{
ListNode<Type> *pListNode = (ListNode<Type> *)pNode;
ListNode<Type> *pPrevNode = NULL;
ListNode<Type> *pNextNode = NULL;
if (pNode) {
pPrevNode = pListNode->GetPrev();
pNextNode = pListNode->GetNext();
if (pPrevNode) {
pPrevNode->SetNext(pNextNode);
if (pNextNode) {
pNextNode->SetPrev(pPrevNode);
}
else {
// We're removing the last node, so we have a new tail
_pTail = pPrevNode;
}
SAFE_DELETE(pListNode);
}
else {
// No previous, so we are the head of the list
_pHead = pNextNode;
if (pNextNode) {
pNextNode->SetPrev(NULL);
}
else {
// No previous, or next. There was only one node.
_pHead = NULL;
_pTail = NULL;
}
SAFE_DELETE(pListNode);
}
_iCount--;
}
}
template <class Type> LISTNODE List<Type>::Find(const Type &item)
{
int i;
Type curItem;
LISTNODE pNode = NULL;
LISTNODE pMatchNode = NULL;
ListNode<Type> * pListNode = NULL;
pNode = GetHeadPosition();
for (i = 0; i < _iCount; i++) {
pListNode = (ListNode<Type> *)pNode;
curItem = GetNext(pNode);
if (curItem == item) {
pMatchNode = (LISTNODE)pListNode;
break;
}
}
return pMatchNode;
}
template <class Type> Type List<Type>::GetAt(LISTNODE pNode)
{
ListNode<Type> *pListNode = (ListNode<Type> *)pNode;
// Faults if you pass NULL
_ASSERTE(pNode);
return pListNode->GetItem();
}
};
#endif
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