Rework CFX_CountRef in terms of CFX_RetainPtr

core/fxcrt/include/fx_basic.h

 // 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 CORE_FXCRT_INCLUDE_FX_BASIC_H_
 #define CORE_FXCRT_INCLUDE_FX_BASIC_H_
 
 #include <algorithm>
@@ skipping 631 matching lines @@
   }
 
  protected:
   uint32_t m_BitPos;
 
   uint32_t m_BitSize;
 
   const uint8_t* m_pData;
 };
 
-template <class ObjClass>
-class CFX_CountRef {
- public:
-  using Ref = CFX_CountRef<ObjClass>;
-
-  class CountedObj : public ObjClass {
-   public:
-    CountedObj() {}
-    CountedObj(const CountedObj& src) : ObjClass(src) {}
-
-    int m_RefCount;
-  };
-
-  CFX_CountRef() : m_pObject(nullptr) {}
-  CFX_CountRef(const Ref& ref) : m_pObject(ref.m_pObject) {
-    if (m_pObject)
-      m_pObject->m_RefCount++;
-  }
-
-  ~CFX_CountRef() { SetNull(); }
-
-  ObjClass* New() {
-    SetNull();
-    m_pObject = new CountedObj;
-    m_pObject->m_RefCount = 1;
-    return m_pObject;
-  }
-
-  void operator=(const Ref& ref) {
-    if (ref.m_pObject)
-      ref.m_pObject->m_RefCount++;
-    SetNull();
-    m_pObject = ref.m_pObject;
-  }
-
-  bool IsNull() const { return !m_pObject; }
-  bool NotNull() const { return !IsNull(); }
-
-  const ObjClass* GetObject() const { return m_pObject; }
-  ObjClass* GetModify() {
-    if (!m_pObject) {
-      m_pObject = new CountedObj;
-      m_pObject->m_RefCount = 1;
-    } else if (m_pObject->m_RefCount > 1) {
-      m_pObject->m_RefCount--;
-      CountedObj* pOldObject = m_pObject;
-      m_pObject = new CountedObj(*pOldObject);
-      m_pObject->m_RefCount = 1;
-    }
-    return m_pObject;
-  }
-
-  void SetNull() {
-    if (!m_pObject) {
-      return;
-    }
-    m_pObject->m_RefCount--;
-    if (m_pObject->m_RefCount <= 0) {
-      delete m_pObject;
-    }
-    m_pObject = nullptr;
-  }
-
-  bool operator==(const Ref& ref) const { return m_pObject == ref.m_pObject; }
-
- protected:
-  CountedObj* m_pObject;
-};
-
 class IFX_Pause {
  public:
   virtual ~IFX_Pause() {}
   virtual FX_BOOL NeedToPauseNow() = 0;
 };
 
 template <typename T>
 class CFX_AutoRestorer {
  public:
   explicit CFX_AutoRestorer(T* location)
@@ skipping 188 matching lines @@
   FX_FLOAT e;
   FX_FLOAT f;
   FX_FLOAT g;
   FX_FLOAT h;
   FX_FLOAT i;
 };
 
 uint32_t GetBits32(const uint8_t* pData, int bitpos, int nbits);
 
 #endif  // CORE_FXCRT_INCLUDE_FX_BASIC_H_