+++ /dev/null
-/*
- * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
- *
- * 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.
- *
- */
-
-// RefPtr and PassRefPtr are documented at http://webkit.org/coding/RefPtr.html
-
-#ifndef WTF_RefPtr_h
-#define WTF_RefPtr_h
-
-#include <algorithm>
-#include "FastAllocBase.h"
-#include "PassRefPtr.h"
-
-namespace WTF {
-
- enum PlacementNewAdoptType { PlacementNewAdopt };
-
- template<typename T> class PassRefPtr;
- template<typename T> class NonNullPassRefPtr;
-
- enum HashTableDeletedValueType { HashTableDeletedValue };
-
- template<typename T> class RefPtr {
- WTF_MAKE_FAST_ALLOCATED;
- public:
- ALWAYS_INLINE RefPtr() : m_ptr(0) { }
- ALWAYS_INLINE RefPtr(T* ptr) : m_ptr(ptr) { refIfNotNull(ptr); }
- ALWAYS_INLINE RefPtr(const RefPtr& o) : m_ptr(o.m_ptr) { refIfNotNull(m_ptr); }
- template<typename U> RefPtr(const RefPtr<U>& o) : m_ptr(o.get()) { refIfNotNull(m_ptr); }
-
- // See comments in PassRefPtr.h for an explanation of why these takes const references.
- template<typename U> RefPtr(const PassRefPtr<U>&);
- template<typename U> RefPtr(const NonNullPassRefPtr<U>&);
-
- // Special constructor for cases where we overwrite an object in place.
- ALWAYS_INLINE RefPtr(PlacementNewAdoptType) { }
-
- // Hash table deleted values, which are only constructed and never copied or destroyed.
- RefPtr(HashTableDeletedValueType) : m_ptr(hashTableDeletedValue()) { }
- bool isHashTableDeletedValue() const { return m_ptr == hashTableDeletedValue(); }
-
- ALWAYS_INLINE ~RefPtr() { derefIfNotNull(m_ptr); }
-
- T* get() const { return m_ptr; }
-
- void clear();
- PassRefPtr<T> release() { PassRefPtr<T> tmp = adoptRef(m_ptr); m_ptr = 0; return tmp; }
-
- 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* (RefPtr::*UnspecifiedBoolType);
- operator UnspecifiedBoolType() const { return m_ptr ? &RefPtr::m_ptr : 0; }
-
- RefPtr& operator=(const RefPtr&);
- RefPtr& operator=(T*);
- RefPtr& operator=(const PassRefPtr<T>&);
- RefPtr& operator=(const NonNullPassRefPtr<T>&);
-#if !HAVE(NULLPTR)
- RefPtr& operator=(std::nullptr_t) { clear(); return *this; }
-#endif
- template<typename U> RefPtr& operator=(const RefPtr<U>&);
- template<typename U> RefPtr& operator=(const PassRefPtr<U>&);
- template<typename U> RefPtr& operator=(const NonNullPassRefPtr<U>&);
-
- void swap(RefPtr&);
-
- static T* hashTableDeletedValue() { return reinterpret_cast<T*>(-1); }
-
- private:
- T* m_ptr;
- };
-
- template<typename T> template<typename U> inline RefPtr<T>::RefPtr(const PassRefPtr<U>& o)
- : m_ptr(o.leakRef())
- {
- }
-
- template<typename T> template<typename U> inline RefPtr<T>::RefPtr(const NonNullPassRefPtr<U>& o)
- : m_ptr(o.leakRef())
- {
- }
-
- template<typename T> inline void RefPtr<T>::clear()
- {
- T* ptr = m_ptr;
- m_ptr = 0;
- derefIfNotNull(ptr);
- }
-
- template<typename T> inline RefPtr<T>& RefPtr<T>::operator=(const RefPtr<T>& o)
- {
- T* optr = o.get();
- refIfNotNull(optr);
- T* ptr = m_ptr;
- m_ptr = optr;
- derefIfNotNull(ptr);
- return *this;
- }
-
- template<typename T> template<typename U> inline RefPtr<T>& RefPtr<T>::operator=(const RefPtr<U>& o)
- {
- T* optr = o.get();
- refIfNotNull(optr);
- T* ptr = m_ptr;
- m_ptr = optr;
- derefIfNotNull(ptr);
- return *this;
- }
-
- template<typename T> inline RefPtr<T>& RefPtr<T>::operator=(T* optr)
- {
- refIfNotNull(optr);
- T* ptr = m_ptr;
- m_ptr = optr;
- derefIfNotNull(ptr);
- return *this;
- }
-
- template<typename T> inline RefPtr<T>& RefPtr<T>::operator=(const PassRefPtr<T>& o)
- {
- T* ptr = m_ptr;
- m_ptr = o.leakRef();
- derefIfNotNull(ptr);
- return *this;
- }
-
- template<typename T> inline RefPtr<T>& RefPtr<T>::operator=(const NonNullPassRefPtr<T>& o)
- {
- T* ptr = m_ptr;
- m_ptr = o.leakRef();
- derefIfNotNull(ptr);
- return *this;
- }
-
- template<typename T> template<typename U> inline RefPtr<T>& RefPtr<T>::operator=(const PassRefPtr<U>& o)
- {
- T* ptr = m_ptr;
- m_ptr = o.leakRef();
- derefIfNotNull(ptr);
- return *this;
- }
-
- template<typename T> template<typename U> inline RefPtr<T>& RefPtr<T>::operator=(const NonNullPassRefPtr<U>& o)
- {
- T* ptr = m_ptr;
- m_ptr = o.leakRef();
- derefIfNotNull(ptr);
- return *this;
- }
-
- template<class T> inline void RefPtr<T>::swap(RefPtr<T>& o)
- {
- std::swap(m_ptr, o.m_ptr);
- }
-
- template<class T> inline void swap(RefPtr<T>& a, RefPtr<T>& b)
- {
- a.swap(b);
- }
-
- template<typename T, typename U> inline bool operator==(const RefPtr<T>& a, const RefPtr<U>& b)
- {
- return a.get() == b.get();
- }
-
- template<typename T, typename U> inline bool operator==(const RefPtr<T>& a, U* b)
- {
- return a.get() == b;
- }
-
- template<typename T, typename U> inline bool operator==(T* a, const RefPtr<U>& b)
- {
- return a == b.get();
- }
-
- template<typename T, typename U> inline bool operator!=(const RefPtr<T>& a, const RefPtr<U>& b)
- {
- return a.get() != b.get();
- }
-
- template<typename T, typename U> inline bool operator!=(const RefPtr<T>& a, U* b)
- {
- return a.get() != b;
- }
-
- template<typename T, typename U> inline bool operator!=(T* a, const RefPtr<U>& b)
- {
- return a != b.get();
- }
-
- template<typename T, typename U> inline RefPtr<T> static_pointer_cast(const RefPtr<U>& p)
- {
- return RefPtr<T>(static_cast<T*>(p.get()));
- }
-
- template<typename T, typename U> inline RefPtr<T> const_pointer_cast(const RefPtr<U>& p)
- {
- return RefPtr<T>(const_cast<T*>(p.get()));
- }
-
- template<typename T> inline T* getPtr(const RefPtr<T>& p)
- {
- return p.get();
- }
-
-} // namespace WTF
-
-using WTF::RefPtr;
-using WTF::static_pointer_cast;
-using WTF::const_pointer_cast;
-
-#endif // WTF_RefPtr_h
projects / apple / javascriptcore.git / blobdiff