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-rw-r--r--JavaScriptCore/wtf/PlatformRefPtr.h205
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diff --git a/JavaScriptCore/wtf/PlatformRefPtr.h b/JavaScriptCore/wtf/PlatformRefPtr.h
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--- a/JavaScriptCore/wtf/PlatformRefPtr.h
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-/*
- * Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
- * Copyright (C) 2008 Collabora Ltd.
- * Copyright (C) 2009 Martin Robinson
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB. If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
- */
-
-#ifndef PlatformRefPtr_h
-#define PlatformRefPtr_h
-
-#include "AlwaysInline.h"
-#include "RefPtr.h"
-#include <algorithm>
-
-namespace WTF {
-
-enum PlatformRefPtrAdoptType { PlatformRefPtrAdopt };
-template <typename T> inline T* refPlatformPtr(T*);
-template <typename T> inline void derefPlatformPtr(T*);
-template <typename T> class PlatformRefPtr;
-template <typename T> PlatformRefPtr<T> adoptPlatformRef(T*);
-
-template <typename T> class PlatformRefPtr {
-public:
- PlatformRefPtr() : m_ptr(0) { }
-
- PlatformRefPtr(T* ptr)
- : m_ptr(ptr)
- {
- if (ptr)
- refPlatformPtr(ptr);
- }
-
- PlatformRefPtr(const PlatformRefPtr& o)
- : m_ptr(o.m_ptr)
- {
- if (T* ptr = m_ptr)
- refPlatformPtr(ptr);
- }
-
- template <typename U> PlatformRefPtr(const PlatformRefPtr<U>& o)
- : m_ptr(o.get())
- {
- if (T* ptr = m_ptr)
- refPlatformPtr(ptr);
- }
-
- ~PlatformRefPtr()
- {
- if (T* ptr = m_ptr)
- derefPlatformPtr(ptr);
- }
-
- void clear()
- {
- T* ptr = m_ptr;
- m_ptr = 0;
- if (ptr)
- derefPlatformPtr(ptr);
- }
-
- T* leakRef() WARN_UNUSED_RETURN
- {
- T* ptr = m_ptr;
- m_ptr = 0;
- return ptr;
- }
-
- // Hash table deleted values, which are only constructed and never copied or destroyed.
- PlatformRefPtr(HashTableDeletedValueType) : m_ptr(hashTableDeletedValue()) { }
- bool isHashTableDeletedValue() const { return m_ptr == hashTableDeletedValue(); }
-
- T* get() const { return m_ptr; }
- T& operator*() const { return *m_ptr; }
- ALWAYS_INLINE T* operator->() const { return m_ptr; }
-
- bool operator!() const { return !m_ptr; }
-
- // This conversion operator allows implicit conversion to bool but not to other integer types.
- typedef T* PlatformRefPtr::*UnspecifiedBoolType;
- operator UnspecifiedBoolType() const { return m_ptr ? &PlatformRefPtr::m_ptr : 0; }
-
- PlatformRefPtr& operator=(const PlatformRefPtr&);
- PlatformRefPtr& operator=(T*);
- template <typename U> PlatformRefPtr& operator=(const PlatformRefPtr<U>&);
-
- void swap(PlatformRefPtr&);
- friend PlatformRefPtr adoptPlatformRef<T>(T*);
-
-private:
- static T* hashTableDeletedValue() { return reinterpret_cast<T*>(-1); }
- // Adopting constructor.
- PlatformRefPtr(T* ptr, PlatformRefPtrAdoptType) : m_ptr(ptr) {}
-
- T* m_ptr;
-};
-
-template <typename T> inline PlatformRefPtr<T>& PlatformRefPtr<T>::operator=(const PlatformRefPtr<T>& o)
-{
- T* optr = o.get();
- if (optr)
- refPlatformPtr(optr);
- T* ptr = m_ptr;
- m_ptr = optr;
- if (ptr)
- derefPlatformPtr(ptr);
- return *this;
-}
-
-template <typename T> inline PlatformRefPtr<T>& PlatformRefPtr<T>::operator=(T* optr)
-{
- T* ptr = m_ptr;
- if (optr)
- refPlatformPtr(optr);
- m_ptr = optr;
- if (ptr)
- derefPlatformPtr(ptr);
- return *this;
-}
-
-template <class T> inline void PlatformRefPtr<T>::swap(PlatformRefPtr<T>& o)
-{
- std::swap(m_ptr, o.m_ptr);
-}
-
-template <class T> inline void swap(PlatformRefPtr<T>& a, PlatformRefPtr<T>& b)
-{
- a.swap(b);
-}
-
-template <typename T, typename U> inline bool operator==(const PlatformRefPtr<T>& a, const PlatformRefPtr<U>& b)
-{
- return a.get() == b.get();
-}
-
-template <typename T, typename U> inline bool operator==(const PlatformRefPtr<T>& a, U* b)
-{
- return a.get() == b;
-}
-
-template <typename T, typename U> inline bool operator==(T* a, const PlatformRefPtr<U>& b)
-{
- return a == b.get();
-}
-
-template <typename T, typename U> inline bool operator!=(const PlatformRefPtr<T>& a, const PlatformRefPtr<U>& b)
-{
- return a.get() != b.get();
-}
-
-template <typename T, typename U> inline bool operator!=(const PlatformRefPtr<T>& a, U* b)
-{
- return a.get() != b;
-}
-
-template <typename T, typename U> inline bool operator!=(T* a, const PlatformRefPtr<U>& b)
-{
- return a != b.get();
-}
-
-template <typename T, typename U> inline PlatformRefPtr<T> static_pointer_cast(const PlatformRefPtr<U>& p)
-{
- return PlatformRefPtr<T>(static_cast<T*>(p.get()));
-}
-
-template <typename T, typename U> inline PlatformRefPtr<T> const_pointer_cast(const PlatformRefPtr<U>& p)
-{
- return PlatformRefPtr<T>(const_cast<T*>(p.get()));
-}
-
-template <typename T> inline T* getPtr(const PlatformRefPtr<T>& p)
-{
- return p.get();
-}
-
-template <typename T> PlatformRefPtr<T> adoptPlatformRef(T* p)
-{
- return PlatformRefPtr<T>(p, PlatformRefPtrAdopt);
-}
-
-} // namespace WTF
-
-using WTF::PlatformRefPtr;
-using WTF::refPlatformPtr;
-using WTF::derefPlatformPtr;
-using WTF::adoptPlatformRef;
-using WTF::static_pointer_cast;
-using WTF::const_pointer_cast;
-
-#endif // PlatformRefPtr_h