1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
7 #include "../../include/fxcrt/fx_basic.h"
9 CFX_PtrList::CFX_PtrList(int nBlockSize)
15 , m_nBlockSize(nBlockSize)
18 FX_POSITION CFX_PtrList::AddTail(void* newElement)
20 CNode* pNewNode = NewNode(m_pNodeTail, NULL);
21 pNewNode->data = newElement;
22 if (m_pNodeTail != NULL) {
23 m_pNodeTail->pNext = pNewNode;
25 m_pNodeHead = pNewNode;
27 m_pNodeTail = pNewNode;
28 return (FX_POSITION) pNewNode;
30 FX_POSITION CFX_PtrList::AddHead(void* newElement)
32 CNode* pNewNode = NewNode(NULL, m_pNodeHead);
33 pNewNode->data = newElement;
34 if (m_pNodeHead != NULL) {
35 m_pNodeHead->pPrev = pNewNode;
37 m_pNodeTail = pNewNode;
39 m_pNodeHead = pNewNode;
40 return (FX_POSITION) pNewNode;
42 FX_POSITION CFX_PtrList::InsertAfter(FX_POSITION position, void* newElement)
44 if (position == NULL) {
45 return AddTail(newElement);
47 CNode* pOldNode = (CNode*) position;
48 CNode* pNewNode = NewNode(pOldNode, pOldNode->pNext);
49 pNewNode->data = newElement;
50 if (pOldNode->pNext != NULL) {
51 pOldNode->pNext->pPrev = pNewNode;
53 m_pNodeTail = pNewNode;
55 pOldNode->pNext = pNewNode;
56 return (FX_POSITION) pNewNode;
58 void CFX_PtrList::RemoveAt(FX_POSITION position)
60 CNode* pOldNode = (CNode*) position;
61 if (pOldNode == m_pNodeHead) {
62 m_pNodeHead = pOldNode->pNext;
64 pOldNode->pPrev->pNext = pOldNode->pNext;
66 if (pOldNode == m_pNodeTail) {
67 m_pNodeTail = pOldNode->pPrev;
69 pOldNode->pNext->pPrev = pOldNode->pPrev;
73 void CFX_PtrList::FreeNode(CFX_PtrList::CNode* pNode)
75 pNode->pNext = m_pNodeFree;
82 void CFX_PtrList::RemoveAll()
85 m_pNodeHead = m_pNodeTail = m_pNodeFree = NULL;
86 m_pBlocks->FreeDataChain();
90 CFX_PtrList::NewNode(CFX_PtrList::CNode* pPrev, CFX_PtrList::CNode* pNext)
92 if (m_pNodeFree == NULL) {
93 CFX_Plex* pNewBlock = CFX_Plex::Create(m_pBlocks, m_nBlockSize, sizeof(CNode));
94 CNode* pNode = (CNode*)pNewBlock->data();
95 pNode += m_nBlockSize - 1;
96 for (int i = m_nBlockSize - 1; i >= 0; i--, pNode--) {
97 pNode->pNext = m_pNodeFree;
101 ASSERT(m_pNodeFree != NULL);
102 CFX_PtrList::CNode* pNode = m_pNodeFree;
103 m_pNodeFree = m_pNodeFree->pNext;
104 pNode->pPrev = pPrev;
105 pNode->pNext = pNext;
107 ASSERT(m_nCount > 0);
111 CFX_PtrList::~CFX_PtrList()
114 ASSERT(m_nCount == 0);
116 FX_POSITION CFX_PtrList::FindIndex(int nIndex) const
118 if (nIndex >= m_nCount || nIndex < 0) {
121 CNode* pNode = m_pNodeHead;
123 pNode = pNode->pNext;
125 return (FX_POSITION) pNode;
127 FX_POSITION CFX_PtrList::Find(void* searchValue, FX_POSITION startAfter) const
129 CNode* pNode = (CNode*) startAfter;
133 pNode = pNode->pNext;
135 for (; pNode != NULL; pNode = pNode->pNext)
136 if (pNode->data == searchValue) {
137 return (FX_POSITION) pNode;