Move xfa/src up to xfa/.

This CL moves the xfa/src files up to the xfa/ directory and fixes the includes,
include guards, and build files.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1803723002 .

1 files changed, 737 insertions, 0 deletions

diff --git a/xfa/fgas/crt/fgas_utils.h b/xfa/fgas/crt/fgas_utils.h
new file mode 100644
index 0000000000..f03e3983fa
--- /dev/null
+++ b/xfa/fgas/crt/fgas_utils.h
@@ -0,0 +1,737 @@
+// 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
+
+#ifndef XFA_FGAS_CRT_FGAS_UTILS_H_
+#define XFA_FGAS_CRT_FGAS_UTILS_H_
+
+#include "core/include/fxcrt/fx_coordinates.h"
+#include "xfa/fgas/crt/fgas_memory.h"
+
+class FX_BASEARRAYDATA;
+
+template <class baseType>
+class CFX_CPLTree;
+
+class CFX_BaseArray : public CFX_Target {
+ protected:
+  CFX_BaseArray(int32_t iGrowSize, int32_t iBlockSize);
+  ~CFX_BaseArray();
+  int32_t GetSize() const;
+  int32_t GetBlockSize() const;
+  uint8_t* AddSpaceTo(int32_t index);
+  uint8_t* GetAt(int32_t index) const;
+  uint8_t* GetBuffer() const;
+  int32_t Append(const CFX_BaseArray& src,
+                 int32_t iStart = 0,
+                 int32_t iCount = -1);
+  int32_t Copy(const CFX_BaseArray& src,
+               int32_t iStart = 0,
+               int32_t iCount = -1);
+  int32_t RemoveLast(int32_t iCount = -1);
+  void RemoveAll(FX_BOOL bLeaveMemory = FALSE);
+
+  FX_BASEARRAYDATA* m_pData;
+};
+
+template <class baseType>
+class CFX_BaseArrayTemplate : public CFX_BaseArray {
+ public:
+  CFX_BaseArrayTemplate(int32_t iGrowSize = 100)
+      : CFX_BaseArray(iGrowSize, sizeof(baseType)) {}
+  CFX_BaseArrayTemplate(int32_t iGrowSize, int32_t iBlockSize)
+      : CFX_BaseArray(iGrowSize, iBlockSize) {}
+  int32_t GetSize() const { return CFX_BaseArray::GetSize(); }
+  int32_t GetBlockSize() const { return CFX_BaseArray::GetBlockSize(); }
+  baseType* AddSpace() {
+    return (baseType*)CFX_BaseArray::AddSpaceTo(CFX_BaseArray::GetSize());
+  }
+  int32_t Add(const baseType& element) {
+    int32_t index = CFX_BaseArray::GetSize();
+    *(baseType*)CFX_BaseArray::AddSpaceTo(index) = element;
+    return index;
+  }
+  baseType* GetBuffer() const { return (baseType*)CFX_BaseArray::GetBuffer(); }
+  baseType& GetAt(int32_t index) const {
+    return *(baseType*)CFX_BaseArray::GetAt(index);
+  }
+  baseType* GetPtrAt(int32_t index) const {
+    return (baseType*)CFX_BaseArray::GetAt(index);
+  }
+  void SetAt(int32_t index, const baseType& element) {
+    *(baseType*)CFX_BaseArray::GetAt(index) = element;
+  }
+  void SetAtGrow(int32_t index, const baseType& element) {
+    *(baseType*)CFX_BaseArray::AddSpaceTo(index) = element;
+  }
+  int32_t Append(const CFX_BaseArrayTemplate& src,
+                 int32_t iStart = 0,
+                 int32_t iCount = -1) {
+    return CFX_BaseArray::Append(src, iStart, iCount);
+  }
+  int32_t Copy(const CFX_BaseArrayTemplate& src,
+               int32_t iStart = 0,
+               int32_t iCount = -1) {
+    return CFX_BaseArray::Copy(src, iStart, iCount);
+  }
+  int32_t RemoveLast(int32_t iCount = -1) {
+    return CFX_BaseArray::RemoveLast(iCount);
+  }
+  void RemoveAll(FX_BOOL bLeaveMemory = FALSE) {
+    CFX_BaseArray::RemoveAll(bLeaveMemory);
+  }
+};
+typedef CFX_BaseArrayTemplate<void*> CFDE_PtrArray;
+typedef CFX_BaseArrayTemplate<FX_DWORD> CFDE_DWordArray;
+typedef CFX_BaseArrayTemplate<FX_WORD> CFDE_WordArray;
+
+template <class baseType>
+class CFX_ObjectBaseArrayTemplate : public CFX_BaseArray {
+ public:
+  CFX_ObjectBaseArrayTemplate(int32_t iGrowSize = 100)
+      : CFX_BaseArray(iGrowSize, sizeof(baseType)) {}
+  ~CFX_ObjectBaseArrayTemplate() { RemoveAll(FALSE); }
+  int32_t GetSize() const { return CFX_BaseArray::GetSize(); }
+  int32_t GetBlockSize() const { return CFX_BaseArray::GetBlockSize(); }
+  int32_t Add(const baseType& element) {
+    int32_t index = CFX_BaseArray::GetSize();
+    baseType* p = (baseType*)CFX_BaseArray::AddSpaceTo(index);
+    new ((void*)p) baseType(element);
+    return index;
+  }
+  baseType& GetAt(int32_t index) const {
+    return *(baseType*)CFX_BaseArray::GetAt(index);
+  }
+  baseType* GetPtrAt(int32_t index) const {
+    return (baseType*)CFX_BaseArray::GetAt(index);
+  }
+  int32_t Append(const CFX_ObjectBaseArrayTemplate& src,
+                 int32_t iStart = 0,
+                 int32_t iCount = -1) {
+    FXSYS_assert(GetBlockSize() == src.GetBlockSize());
+    if (iCount == 0) {
+      return 0;
+    }
+    int32_t iSize = src.GetSize();
+    FXSYS_assert(iStart > -1 && iStart < iSize);
+    if (iCount < 0) {
+      iCount = iSize;
+    }
+    if (iStart + iCount > iSize) {
+      iCount = iSize - iStart;
+    }
+    if (iCount < 1) {
+      return 0;
+    }
+    iSize = CFX_BaseArray::GetSize();
+    CFX_BaseArray::AddSpaceTo(iSize + iCount - 1);
+    uint8_t** pStart = CFX_BaseArray::GetAt(iSize);
+    int32_t iBlockSize = CFX_BaseArray::GetBlockSize();
+    iSize = iStart + iCount;
+    for (int32_t i = iStart; i < iSize; i++) {
+      FXTARGET_NewWith((void*)pStart) baseType(src.GetAt(i));
+      pStart += iBlockSize;
+    }
+    return iCount;
+  }
+  int32_t Copy(const CFX_ObjectBaseArrayTemplate& src,
+               int32_t iStart = 0,
+               int32_t iCount = -1) {
+    FXSYS_assert(GetBlockSize() == src.GetBlockSize());
+    if (iCount == 0) {
+      return 0;
+    }
+    int32_t iSize = src.GetSize();
+    FXSYS_assert(iStart > -1 && iStart < iSize);
+    if (iCount < 0) {
+      iCount = iSize;
+    }
+    if (iStart + iCount > iSize) {
+      iCount = iSize - iStart;
+    }
+    if (iCount < 1) {
+      return 0;
+    }
+    RemoveAll(TRUE);
+    CFX_BaseArray::AddSpaceTo(iCount - 1);
+    uint8_t** pStart = CFX_BaseArray::GetAt(0);
+    int32_t iBlockSize = CFX_BaseArray::GetBlockSize();
+    iSize = iStart + iCount;
+    for (int32_t i = iStart; i < iSize; i++) {
+      new ((void*)pStart) baseType(src.GetAt(i));
+      pStart += iBlockSize;
+    }
+    return iCount;
+  }
+  int32_t RemoveLast(int32_t iCount = -1) {
+    int32_t iSize = CFX_BaseArray::GetSize();
+    if (iCount < 0 || iCount > iSize) {
+      iCount = iSize;
+    }
+    if (iCount == 0) {
+      return iSize;
+    }
+    for (int32_t i = iSize - iCount; i < iSize; i++) {
+      ((baseType*)GetPtrAt(i))->~baseType();
+    }
+    return CFX_BaseArray::RemoveLast(iCount);
+  }
+  void RemoveAll(FX_BOOL bLeaveMemory = FALSE) {
+    int32_t iSize = CFX_BaseArray::GetSize();
+    for (int32_t i = 0; i < iSize; i++) {
+      ((baseType*)GetPtrAt(i))->~baseType();
+    }
+    CFX_BaseArray::RemoveAll(bLeaveMemory);
+  }
+};
+
+class CFX_BaseMassArrayImp : public CFX_Target {
+ public:
+  CFX_BaseMassArrayImp(int32_t iChunkSize, int32_t iBlockSize);
+  ~CFX_BaseMassArrayImp();
+  uint8_t* AddSpace() { return AddSpaceTo(m_iBlockCount); }
+  uint8_t* AddSpaceTo(int32_t index);
+  uint8_t* GetAt(int32_t index) const;
+  int32_t Append(const CFX_BaseMassArrayImp& src,
+                 int32_t iStart = 0,
+                 int32_t iCount = -1);
+  int32_t Copy(const CFX_BaseMassArrayImp& src,
+               int32_t iStart = 0,
+               int32_t iCount = -1);
+  int32_t RemoveLast(int32_t iCount = -1);
+  void RemoveAll(FX_BOOL bLeaveMemory = FALSE);
+  int32_t m_iChunkSize;
+  int32_t m_iBlockSize;
+  int32_t m_iChunkCount;
+  int32_t m_iBlockCount;
+  CFX_PtrArray* m_pData;
+
+ protected:
+  void Append(int32_t iDstStart,
+              const CFX_BaseMassArrayImp& src,
+              int32_t iSrcStart = 0,
+              int32_t iSrcCount = -1);
+};
+
+class CFX_BaseMassArray : public CFX_Target {
+ protected:
+  CFX_BaseMassArray(int32_t iChunkSize, int32_t iBlockSize);
+  ~CFX_BaseMassArray();
+  int32_t GetSize() const;
+  uint8_t* AddSpaceTo(int32_t index);
+  uint8_t* GetAt(int32_t index) const;
+  int32_t Append(const CFX_BaseMassArray& src,
+                 int32_t iStart = 0,
+                 int32_t iCount = -1);
+  int32_t Copy(const CFX_BaseMassArray& src,
+               int32_t iStart = 0,
+               int32_t iCount = -1);
+  int32_t RemoveLast(int32_t iCount = -1);
+  void RemoveAll(FX_BOOL bLeaveMemory = FALSE);
+  CFX_BaseMassArrayImp* m_pData;
+};
+
+template <class baseType>
+class CFX_MassArrayTemplate : public CFX_BaseMassArray {
+ public:
+  CFX_MassArrayTemplate(int32_t iChunkSize = 100)
+      : CFX_BaseMassArray(iChunkSize, sizeof(baseType)) {}
+  CFX_MassArrayTemplate(int32_t iChunkSize, int32_t iBlockSize)
+      : CFX_BaseMassArray(iChunkSize, iBlockSize) {}
+  int32_t GetSize() const { return CFX_BaseMassArray::GetSize(); }
+  baseType* AddSpace() {
+    return (baseType*)CFX_BaseMassArray::AddSpaceTo(
+        CFX_BaseMassArray::GetSize());
+  }
+  int32_t Add(const baseType& element) {
+    int32_t index = CFX_BaseMassArray::GetSize();
+    *(baseType*)CFX_BaseMassArray::AddSpaceTo(index) = element;
+    return index;
+  }
+  baseType& GetAt(int32_t index) const {
+    return *(baseType*)CFX_BaseMassArray::GetAt(index);
+  }
+  baseType* GetPtrAt(int32_t index) const {
+    return (baseType*)CFX_BaseMassArray::GetAt(index);
+  }
+  void SetAt(int32_t index, const baseType& element) {
+    *(baseType*)CFX_BaseMassArray::GetAt(index) = element;
+  }
+  void SetAtGrow(int32_t index, const baseType& element) {
+    *(baseType*)CFX_BaseMassArray::AddSpaceTo(index) = element;
+  }
+  int32_t Append(const CFX_MassArrayTemplate& src,
+                 int32_t iStart = 0,
+                 int32_t iCount = -1) {
+    return CFX_BaseMassArray::Append(src, iStart, iCount);
+  }
+  int32_t Copy(const CFX_MassArrayTemplate& src,
+               int32_t iStart = 0,
+               int32_t iCount = -1) {
+    return CFX_BaseMassArray::Copy(src, iStart, iCount);
+  }
+  int32_t RemoveLast(int32_t iCount = -1) {
+    return CFX_BaseMassArray::RemoveLast(iCount);
+  }
+  void RemoveAll(FX_BOOL bLeaveMemory = FALSE) {
+    CFX_BaseMassArray::RemoveAll(bLeaveMemory);
+  }
+};
+typedef CFX_MassArrayTemplate<void*> CFX_PtrMassArray;
+typedef CFX_MassArrayTemplate<int32_t> CFX_Int32MassArray;
+typedef CFX_MassArrayTemplate<FX_DWORD> CFX_DWordMassArray;
+typedef CFX_MassArrayTemplate<FX_WORD> CFX_WordMassArray;
+typedef CFX_MassArrayTemplate<CFX_Rect> CFX_RectMassArray;
+typedef CFX_MassArrayTemplate<CFX_RectF> CFX_RectFMassArray;
+
+template <class baseType>
+class CFX_ObjectMassArrayTemplate : public CFX_BaseMassArray {
+ public:
+  CFX_ObjectMassArrayTemplate(int32_t iChunkSize = 100)
+      : CFX_BaseMassArray(iChunkSize, sizeof(baseType)) {}
+  ~CFX_ObjectMassArrayTemplate() { RemoveAll(FALSE); }
+  int32_t GetSize() const { return CFX_BaseMassArray::GetSize(); }
+  int32_t Add(const baseType& element) {
+    int32_t index = CFX_BaseMassArray::GetSize();
+    baseType* p = (baseType*)CFX_BaseMassArray::AddSpaceTo(index);
+    new ((void*)p) baseType(element);
+    return index;
+  }
+  baseType& GetAt(int32_t index) const {
+    return *(baseType*)CFX_BaseMassArray::GetAt(index);
+  }
+  baseType* GetPtrAt(int32_t index) const {
+    return (baseType*)CFX_BaseMassArray::GetAt(index);
+  }
+  int32_t Append(const CFX_ObjectMassArrayTemplate& src,
+                 int32_t iStart = 0,
+                 int32_t iCount = -1) {
+    if (iCount == 0) {
+      return CFX_BaseMassArray::GetSize();
+    }
+    int32_t iSize = src.GetSize();
+    FXSYS_assert(iStart > -1 && iStart < iSize);
+    if (iCount < 0) {
+      iCount = iSize;
+    }
+    int32_t iEnd = iStart + iCount;
+    if (iEnd > iSize) {
+      iEnd = iSize;
+    }
+    for (int32_t i = iStart; i < iEnd; i++) {
+      Add(src.GetAt(i));
+    }
+    return CFX_BaseMassArray::GetSize();
+  }
+  int32_t Copy(const CFX_ObjectMassArrayTemplate& src,
+               int32_t iStart = 0,
+               int32_t iCount = -1) {
+    if (iCount == 0) {
+      return CFX_BaseMassArray::GetSize();
+    }
+    int32_t iSize = src.GetSize();
+    FXSYS_assert(iStart > -1 && iStart < iSize);
+    if (iCount < 0) {
+      iCount = iSize;
+    }
+    int32_t iEnd = iStart + iCount;
+    if (iEnd > iSize) {
+      iEnd = iSize;
+    }
+    RemoveAll(TRUE);
+    for (int32_t i = iStart; i < iEnd; i++) {
+      Add(src.GetAt(i));
+    }
+    return CFX_BaseMassArray::GetSize();
+  }
+  int32_t RemoveLast(int32_t iCount = -1) {
+    int32_t iSize = CFX_BaseMassArray::GetSize();
+    if (iCount < 0 || iCount > iSize) {
+      iCount = iSize;
+    }
+    if (iCount == 0) {
+      return iSize;
+    }
+    for (int32_t i = iSize - iCount; i < iSize; i++) {
+      ((baseType*)GetPtrAt(i))->~baseType();
+    }
+    return CFX_BaseMassArray::RemoveLast(iCount);
+  }
+  void RemoveAll(FX_BOOL bLeaveMemory = FALSE) {
+    int32_t iSize = CFX_BaseMassArray::GetSize();
+    for (int32_t i = 0; i < iSize; i++) {
+      ((baseType*)GetPtrAt(i))->~baseType();
+    }
+    CFX_BaseMassArray::RemoveAll(bLeaveMemory);
+  }
+};
+
+class CFX_BaseDiscreteArray : public CFX_Target {
+ protected:
+  CFX_BaseDiscreteArray(int32_t iChunkSize, int32_t iBlockSize);
+  ~CFX_BaseDiscreteArray();
+  uint8_t* AddSpaceTo(int32_t index);
+  uint8_t* GetAt(int32_t index) const;
+  void RemoveAll();
+  void* m_pData;
+};
+
+template <class baseType>
+class CFX_DiscreteArrayTemplate : public CFX_BaseDiscreteArray {
+ public:
+  CFX_DiscreteArrayTemplate(int32_t iChunkSize = 100)
+      : CFX_BaseDiscreteArray(iChunkSize, sizeof(baseType)) {}
+  baseType& GetAt(int32_t index, const baseType& defValue) const {
+    baseType* p = (baseType*)CFX_BaseDiscreteArray::GetAt(index);
+    return p == NULL ? (baseType&)defValue : *p;
+  }
+  baseType* GetPtrAt(int32_t index) const {
+    return (baseType*)CFX_BaseDiscreteArray::GetAt(index);
+  }
+  void SetAtGrow(int32_t index, const baseType& element) {
+    *(baseType*)CFX_BaseDiscreteArray::AddSpaceTo(index) = element;
+  }
+  void RemoveAll() { CFX_BaseDiscreteArray::RemoveAll(); }
+};
+typedef CFX_DiscreteArrayTemplate<void*> CFX_PtrDiscreteArray;
+typedef CFX_DiscreteArrayTemplate<FX_DWORD> CFX_DWordDiscreteArray;
+typedef CFX_DiscreteArrayTemplate<FX_WORD> CFX_WordDiscreteArray;
+
+class CFX_BaseStack : public CFX_Target {
+ protected:
+  CFX_BaseStack(int32_t iChunkSize, int32_t iBlockSize);
+  ~CFX_BaseStack();
+  uint8_t* Push();
+  void Pop();
+  uint8_t* GetTopElement() const;
+  int32_t GetSize() const;
+  uint8_t* GetAt(int32_t index) const;
+  void RemoveAll(FX_BOOL bLeaveMemory = FALSE);
+  CFX_BaseMassArrayImp* m_pData;
+};
+
+template <class baseType>
+class CFX_StackTemplate : public CFX_BaseStack {
+ public:
+  CFX_StackTemplate(int32_t iChunkSize = 100)
+      : CFX_BaseStack(iChunkSize, sizeof(baseType)) {}
+  int32_t Push(const baseType& element) {
+    int32_t index = CFX_BaseStack::GetSize();
+    *(baseType*)CFX_BaseStack::Push() = element;
+    return index;
+  }
+  void Pop() { CFX_BaseStack::Pop(); }
+  baseType* GetTopElement() const {
+    return (baseType*)CFX_BaseStack::GetTopElement();
+  }
+  int32_t GetSize() const { return CFX_BaseStack::GetSize(); }
+  baseType* GetAt(int32_t index) const {
+    return (baseType*)CFX_BaseStack::GetAt(index);
+  }
+  void RemoveAll(FX_BOOL bLeaveMemory = FALSE) {
+    CFX_BaseStack::RemoveAll(bLeaveMemory);
+  }
+};
+typedef CFX_StackTemplate<void*> CFX_PtrStack;
+typedef CFX_StackTemplate<FX_DWORD> CFX_DWordStack;
+typedef CFX_StackTemplate<FX_WORD> CFX_WordStack;
+typedef CFX_StackTemplate<int32_t> CFX_Int32Stack;
+
+template <class baseType>
+class CFX_ObjectStackTemplate : public CFX_BaseStack {
+ public:
+  CFX_ObjectStackTemplate(int32_t iChunkSize = 100)
+      : CFX_BaseStack(iChunkSize, sizeof(baseType)) {}
+  ~CFX_ObjectStackTemplate() { RemoveAll(); }
+  int32_t Push(const baseType& element) {
+    int32_t index = CFX_BaseStack::GetSize();
+    baseType* p = (baseType*)CFX_BaseStack::Push();
+    new ((void*)p) baseType(element);
+    return index;
+  }
+  void Pop() {
+    baseType* p = (baseType*)CFX_BaseStack::GetTopElement();
+    if (p != NULL) {
+      p->~baseType();
+    }
+    CFX_BaseStack::Pop();
+  }
+  baseType* GetTopElement() const {
+    return (baseType*)CFX_BaseStack::GetTopElement();
+  }
+  int32_t GetSize() const { return CFX_BaseStack::GetSize(); }
+  baseType* GetAt(int32_t index) const {
+    return (baseType*)CFX_BaseStack::GetAt(index);
+  }
+  void RemoveAll(FX_BOOL bLeaveMemory = FALSE) {
+    int32_t iSize = CFX_BaseStack::GetSize();
+    for (int32_t i = 0; i < iSize; i++) {
+      ((baseType*)CFX_BaseStack::GetAt(i))->~baseType();
+    }
+    CFX_BaseStack::RemoveAll(bLeaveMemory);
+  }
+  int32_t Copy(const CFX_ObjectStackTemplate& src,
+               int32_t iStart = 0,
+               int32_t iCount = -1) {
+    if (iCount == 0) {
+      return CFX_BaseStack::GetSize();
+    }
+    int32_t iSize = src.GetSize();
+    FXSYS_assert(iStart > -1 && iStart < iSize);
+    if (iCount < 0) {
+      iCount = iSize;
+    }
+    int32_t iEnd = iStart + iCount;
+    if (iEnd > iSize) {
+      iEnd = iSize;
+    }
+    RemoveAll(TRUE);
+    for (int32_t i = iStart; i < iEnd; i++) {
+      Push(*src.GetAt(i));
+    }
+    return CFX_BaseStack::GetSize();
+  }
+};
+
+template <class baseType>
+class CFX_CPLTreeNode : public CFX_Target {
+ public:
+  typedef CFX_CPLTreeNode<baseType> CPLTreeNode;
+  CFX_CPLTreeNode()
+      : m_pParentNode(NULL),
+        m_pChildNode(NULL),
+        m_pPrevNode(NULL),
+        m_pNextNode(NULL),
+        m_Data() {}
+  enum TreeNode {
+    Root = 0,
+    Parent,
+    FirstSibling,
+    PreviousSibling,
+    NextSibling,
+    LastSibling,
+    FirstNeighbor,
+    PreviousNeighbor,
+    NextNeighbor,
+    LastNeighbor,
+    FirstChild,
+    LastChild
+  };
+  CPLTreeNode* GetNode(TreeNode eNode) const {
+    switch (eNode) {
+      case Root: {
+        CPLTreeNode* pParent = (CPLTreeNode*)this;
+        CPLTreeNode* pTemp;
+        while ((pTemp = pParent->m_pParentNode) != NULL) {
+          pParent = pTemp;
+        }
+        return pParent;
+      }
+      case Parent:
+        return m_pParentNode;
+      case FirstSibling: {
+        CPLTreeNode* pNode = (CPLTreeNode*)this;
+        CPLTreeNode* pTemp;
+        while ((pTemp = pNode->m_pPrevNode) != NULL) {
+          pNode = pTemp;
+        }
+        return pNode == (CPLTreeNode*)this ? NULL : pNode;
+      }
+      case PreviousSibling:
+        return m_pPrevNode;
+      case NextSibling:
+        return m_pNextNode;
+      case LastSibling: {
+        CPLTreeNode* pNode = (CPLTreeNode*)this;
+        CPLTreeNode* pTemp;
+        while ((pTemp = pNode->m_pNextNode) != NULL) {
+          pNode = pTemp;
+        }
+        return pNode == (CPLTreeNode*)this ? NULL : pNode;
+      }
+      case FirstNeighbor: {
+        CPLTreeNode* pParent = (CPLTreeNode*)this;
+        CPLTreeNode* pTemp;
+        while ((pTemp = pParent->m_pParentNode) != NULL) {
+          pParent = pTemp;
+        }
+        return pParent == (CPLTreeNode*)this ? NULL : pParent;
+      }
+      case PreviousNeighbor: {
+        if (m_pPrevNode == NULL) {
+          return m_pParentNode;
+        }
+        CPLTreeNode* pNode = m_pPrevNode;
+        CPLTreeNode* pTemp;
+        while ((pTemp = pNode->m_pChildNode) != NULL) {
+          pNode = pTemp;
+          while ((pTemp = pNode->m_pNextNode) != NULL) {
+            pNode = pTemp;
+          }
+        }
+        return pNode;
+      }
+      case NextNeighbor: {
+        if (m_pChildNode != NULL) {
+          return m_pChildNode;
+        }
+        if (m_pNextNode != NULL) {
+          return m_pNextNode;
+        }
+        CPLTreeNode* pNode = m_pParentNode;
+        while (pNode != NULL) {
+          if (pNode->m_pNextNode != NULL) {
+            return pNode->m_pNextNode;
+          }
+          pNode = pNode->m_pParentNode;
+        }
+        return NULL;
+      }
+      case LastNeighbor: {
+        CPLTreeNode* pNode = (CPLTreeNode*)this;
+        CPLTreeNode* pTemp;
+        while ((pTemp = pNode->m_pParentNode) != NULL) {
+          pNode = pTemp;
+        }
+        while (TRUE) {
+          CPLTreeNode* pTemp;
+          while ((pTemp = pNode->m_pNextNode) != NULL) {
+            pNode = pTemp;
+          }
+          if (pNode->m_pChildNode == NULL) {
+            break;
+          }
+          pNode = pNode->m_pChildNode;
+        }
+        return pNode == (CPLTreeNode*)this ? NULL : pNode;
+      }
+      case FirstChild:
+        return m_pChildNode;
+      case LastChild: {
+        if (m_pChildNode == NULL) {
+          return NULL;
+        }
+        CPLTreeNode* pChild = m_pChildNode;
+        CPLTreeNode* pTemp;
+        while ((pTemp = pChild->m_pNextNode) != NULL) {
+          pChild = pTemp;
+        }
+        return pChild;
+      }
+      default:
+        break;
+    }
+    return NULL;
+  }
+  void SetParentNode(CPLTreeNode* pNode) { m_pParentNode = pNode; }
+  int32_t CountChildNodes() const {
+    int32_t iCount = 0;
+    CPLTreeNode* pNode = m_pChildNode;
+    while (pNode) {
+      iCount++;
+      pNode = pNode->m_pNextNode;
+    }
+    return iCount;
+  }
+  CPLTreeNode* GetChildNode(int32_t iIndex) const {
+    int32_t iCount = 0;
+    CPLTreeNode* pNode = m_pChildNode;
+    while (pNode) {
+      if (iIndex == iCount) {
+        return pNode;
+      }
+      iCount++;
+      pNode = pNode->m_pNextNode;
+    }
+    return NULL;
+  }
+  int32_t GetNodeIndex() const {
+    int32_t index = 0;
+    CPLTreeNode* pNode = m_pPrevNode;
+    while (pNode != NULL) {
+      index++;
+      pNode = pNode->m_pPrevNode;
+    }
+    return index;
+  }
+  FX_BOOL IsParentNode(const CPLTreeNode* pNode) const {
+    CPLTreeNode* pParent = m_pParentNode;
+    while (pParent != NULL) {
+      if (pParent == pNode) {
+        return TRUE;
+      }
+      pParent = pParent->GetTreeNode(Parent);
+    }
+    return FALSE;
+  }
+  FX_BOOL IsChildNode(const CPLTreeNode* pNode) const {
+    if (pNode == NULL) {
+      return FALSE;
+    }
+    return pNode->IsParentNode((const CPLTreeNode*)this);
+  }
+  void SetChildNode(CPLTreeNode* pNode) { m_pChildNode = pNode; }
+  void SetPrevNode(CPLTreeNode* pNode) { m_pPrevNode = pNode; }
+  void SetNextNode(CPLTreeNode* pNode) { m_pNextNode = pNode; }
+  int32_t GetNodeLevel() const {
+    int32_t iLevel = 0;
+    CPLTreeNode* pNode = (CPLTreeNode*)this;
+    while ((pNode = pNode->m_pParentNode) != NULL) {
+      iLevel++;
+    }
+    return iLevel;
+  }
+  bool IsRootNode() const { return !m_pParentNode; }
+  baseType GetData() const { return m_Data; }
+  void SetData(baseType data) { m_Data = data; }
+
+ protected:
+  CPLTreeNode* m_pParentNode;
+  CPLTreeNode* m_pChildNode;
+  CPLTreeNode* m_pPrevNode;
+  CPLTreeNode* m_pNextNode;
+  baseType m_Data;
+  friend class CFX_CPLTree<baseType>;
+};
+
+template <class baseType>
+class CFX_CPLTree {
+ public:
+  typedef CFX_CPLTreeNode<baseType> CPLTreeNode;
+  CFX_CPLTree() : m_Root() {}
+  ~CFX_CPLTree() {
+    CPLTreeNode* pNode = m_Root.GetNode(CPLTreeNode::LastNeighbor);
+    while (pNode != NULL) {
+      if (pNode->IsRootNode()) {
+        break;
+      }
+      CPLTreeNode* pTemp = pNode->GetNode(CPLTreeNode::PreviousNeighbor);
+      delete pNode;
+      pNode = pTemp;
+    }
+  }
+  CPLTreeNode* GetRoot() { return &m_Root; }
+  CPLTreeNode* AddChild(baseType data, CPLTreeNode* pParent = NULL) {
+    if (pParent == NULL) {
+      pParent = &m_Root;
+    }
+    CPLTreeNode* pChild = new CPLTreeNode;
+    pChild->SetParentNode(pParent);
+    pChild->SetData(data);
+    if (pParent->m_pChildNode == NULL) {
+      pParent->m_pChildNode = pChild;
+    } else {
+      CPLTreeNode* pLast = pParent->GetNode(CPLTreeNode::LastChild);
+      pChild->SetPrevNode(pLast);
+      pLast->SetNextNode(pChild);
+    }
+    return pChild;
+  }
+
+ protected:
+  CPLTreeNode m_Root;
+};
+
+#endif  // XFA_FGAS_CRT_FGAS_UTILS_H_