From 5110c4743751145c4ae1934cd1d83bc6c55bb43f Mon Sep 17 00:00:00 2001
From: John Abd-El-Malek <jabdelmalek@google.com>
Date: Sat, 17 May 2014 22:33:34 -0700
Subject: Initial commit.

---
 core/src/fxcrt/fx_basic_list.cpp | 141 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 core/src/fxcrt/fx_basic_list.cpp

(limited to 'core/src/fxcrt/fx_basic_list.cpp')

diff --git a/core/src/fxcrt/fx_basic_list.cpp b/core/src/fxcrt/fx_basic_list.cpp
new file mode 100644
index 0000000000..92b3d2c0c4
--- /dev/null
+++ b/core/src/fxcrt/fx_basic_list.cpp
@@ -0,0 +1,141 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+ 
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../../include/fxcrt/fx_basic.h"
+#include "plex.h"
+CFX_PtrList::CFX_PtrList(int nBlockSize, IFX_Allocator* pAllocator)
+    : m_pAllocator(pAllocator)
+    , m_pNodeHead(NULL)
+    , m_pNodeTail(NULL)
+    , m_nCount(0)
+    , m_pNodeFree(NULL)
+    , m_pBlocks(NULL)
+    , m_nBlockSize(nBlockSize)
+{
+}
+FX_POSITION CFX_PtrList::AddTail(void* newElement)
+{
+    CNode* pNewNode = NewNode(m_pNodeTail, NULL);
+    pNewNode->data = newElement;
+    if (m_pNodeTail != NULL) {
+        m_pNodeTail->pNext = pNewNode;
+    } else {
+        m_pNodeHead = pNewNode;
+    }
+    m_pNodeTail = pNewNode;
+    return (FX_POSITION) pNewNode;
+}
+FX_POSITION CFX_PtrList::AddHead(void* newElement)
+{
+    CNode* pNewNode = NewNode(NULL, m_pNodeHead);
+    pNewNode->data = newElement;
+    if (m_pNodeHead != NULL) {
+        m_pNodeHead->pPrev = pNewNode;
+    } else {
+        m_pNodeTail = pNewNode;
+    }
+    m_pNodeHead = pNewNode;
+    return (FX_POSITION) pNewNode;
+}
+FX_POSITION CFX_PtrList::InsertAfter(FX_POSITION position, void* newElement)
+{
+    if (position == NULL) {
+        return AddTail(newElement);
+    }
+    CNode* pOldNode = (CNode*) position;
+    CNode* pNewNode = NewNode(pOldNode, pOldNode->pNext);
+    pNewNode->data = newElement;
+    if (pOldNode->pNext != NULL) {
+        pOldNode->pNext->pPrev = pNewNode;
+    } else {
+        m_pNodeTail = pNewNode;
+    }
+    pOldNode->pNext = pNewNode;
+    return (FX_POSITION) pNewNode;
+}
+void CFX_PtrList::RemoveAt(FX_POSITION position)
+{
+    CNode* pOldNode = (CNode*) position;
+    if (pOldNode == m_pNodeHead) {
+        m_pNodeHead = pOldNode->pNext;
+    } else {
+        pOldNode->pPrev->pNext = pOldNode->pNext;
+    }
+    if (pOldNode == m_pNodeTail) {
+        m_pNodeTail = pOldNode->pPrev;
+    } else {
+        pOldNode->pNext->pPrev = pOldNode->pPrev;
+    }
+    FreeNode(pOldNode);
+}
+void CFX_PtrList::FreeNode(CFX_PtrList::CNode* pNode)
+{
+    pNode->pNext = m_pNodeFree;
+    m_pNodeFree = pNode;
+    m_nCount--;
+    if (m_nCount == 0) {
+        RemoveAll();
+    }
+}
+void CFX_PtrList::RemoveAll()
+{
+    m_nCount = 0;
+    m_pNodeHead = m_pNodeTail = m_pNodeFree = NULL;
+    m_pBlocks->FreeDataChain(m_pAllocator);
+    m_pBlocks = NULL;
+}
+CFX_PtrList::CNode*
+CFX_PtrList::NewNode(CFX_PtrList::CNode* pPrev, CFX_PtrList::CNode* pNext)
+{
+    if (m_pNodeFree == NULL) {
+        CFX_Plex* pNewBlock = CFX_Plex::Create(m_pAllocator, m_pBlocks, m_nBlockSize, sizeof(CNode));
+        CNode* pNode = (CNode*)pNewBlock->data();
+        pNode += m_nBlockSize - 1;
+        for (int i = m_nBlockSize - 1; i >= 0; i--, pNode--) {
+            pNode->pNext = m_pNodeFree;
+            m_pNodeFree = pNode;
+        }
+    }
+    ASSERT(m_pNodeFree != NULL);
+    CFX_PtrList::CNode* pNode = m_pNodeFree;
+    m_pNodeFree = m_pNodeFree->pNext;
+    pNode->pPrev = pPrev;
+    pNode->pNext = pNext;
+    m_nCount++;
+    ASSERT(m_nCount > 0);
+    pNode->data = 0;
+    return pNode;
+}
+CFX_PtrList::~CFX_PtrList()
+{
+    RemoveAll();
+    ASSERT(m_nCount == 0);
+}
+FX_POSITION CFX_PtrList::FindIndex(int nIndex) const
+{
+    if (nIndex >= m_nCount || nIndex < 0) {
+        return NULL;
+    }
+    CNode* pNode = m_pNodeHead;
+    while (nIndex--) {
+        pNode = pNode->pNext;
+    }
+    return (FX_POSITION) pNode;
+}
+FX_POSITION CFX_PtrList::Find(void* searchValue, FX_POSITION startAfter) const
+{
+    CNode* pNode = (CNode*) startAfter;
+    if (pNode == NULL) {
+        pNode = m_pNodeHead;
+    } else {
+        pNode = pNode->pNext;
+    }
+    for (; pNode != NULL; pNode = pNode->pNext)
+        if (pNode->data == searchValue) {
+            return (FX_POSITION) pNode;
+        }
+    return NULL;
+}
-- 
cgit v1.2.3