15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved. 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * This library is free software; you can redistribute it and/or 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modify it under the terms of the GNU Library General Public 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * License as published by the Free Software Foundation; either 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * version 2 of the License, or (at your option) any later version. 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * This library is distributed in the hope that it will be useful, 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * but WITHOUT ANY WARRANTY; without even the implied warranty of 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Library General Public License for more details. 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * You should have received a copy of the GNU Library General Public License 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * along with this library; see the file COPYING.LIB. If not, write to 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Boston, MA 02110-1301, USA. 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifndef WTF_OwnPtr_h 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define WTF_OwnPtr_h 235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 24591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch#include "wtf/Assertions.h" 25591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch#include "wtf/Noncopyable.h" 26591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch#include "wtf/NullPtr.h" 27591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch#include "wtf/OwnPtrCommon.h" 28591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch#include "wtf/TypeTraits.h" 295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include <algorithm> 305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include <memory> 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)namespace WTF { 335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // Unlike most of our smart pointers, OwnPtr can take either the pointer type or the pointed-to type. 355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> class PassOwnPtr; 375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> PassOwnPtr<T> adoptPtr(T*); 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> class OwnPtr { 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#if COMPILER_SUPPORTS(CXX_RVALUE_REFERENCES) 415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // If rvalue references are not supported, the copy constructor is 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // public so OwnPtr cannot be marked noncopyable. See note below. 435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) WTF_MAKE_NONCOPYABLE(OwnPtr); 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 45e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch WTF_DISALLOW_CONSTRUCTION_FROM_ZERO(OwnPtr); 465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) public: 475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) typedef typename RemovePointer<T>::Type ValueType; 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) typedef ValueType* PtrType; 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr() : m_ptr(0) { } 515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr(std::nullptr_t) : m_ptr(0) { } 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 535c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // See comment in PassOwnPtr.h for why this takes a const reference. 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename U> OwnPtr(const PassOwnPtr<U>& o); 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#if !COMPILER_SUPPORTS(CXX_RVALUE_REFERENCES) 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // This copy constructor is used implicitly by gcc when it generates 585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // transients for assigning a PassOwnPtr<T> object to a stack-allocated 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // OwnPtr<T> object. It should never be called explicitly and gcc 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // should optimize away the constructor when generating code. 615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr(const OwnPtr<ValueType>&); 625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ~OwnPtr() { deleteOwnedPtr(m_ptr); } 655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType get() const { return m_ptr; } 675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void clear(); 695c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PassOwnPtr<T> release(); 705c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType leakPtr() WARN_UNUSED_RETURN; 715c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ValueType& operator*() const { ASSERT(m_ptr); return *m_ptr; } 735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType operator->() const { ASSERT(m_ptr); return m_ptr; } 745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 755c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool operator!() const { return !m_ptr; } 765c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 775c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // This conversion operator allows implicit conversion to bool but not to other integer types. 785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) typedef PtrType OwnPtr::*UnspecifiedBoolType; 795c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) operator UnspecifiedBoolType() const { return m_ptr ? &OwnPtr::m_ptr : 0; } 805c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 815c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr& operator=(const PassOwnPtr<T>&); 825c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr& operator=(std::nullptr_t) { clear(); return *this; } 835c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename U> OwnPtr& operator=(const PassOwnPtr<U>&); 845c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#if COMPILER_SUPPORTS(CXX_RVALUE_REFERENCES) 865c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr(OwnPtr&&); 875c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename U> OwnPtr(OwnPtr<U>&&); 885c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 895c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr& operator=(OwnPtr&&); 905c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename U> OwnPtr& operator=(OwnPtr<U>&&); 915c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 925c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 935c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void swap(OwnPtr& o) { std::swap(m_ptr, o.m_ptr); } 945c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 955c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) private: 965c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#if !COMPILER_SUPPORTS(CXX_RVALUE_REFERENCES) 975c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // If rvalue references are supported, noncopyable takes care of this. 985c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr& operator=(const OwnPtr&); 995c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 1005c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1015c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // We should never have two OwnPtrs for the same underlying object (otherwise we'll get 1025c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // double-destruction), so these equality operators should never be needed. 1035c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename U> bool operator==(const OwnPtr<U>&) { COMPILE_ASSERT(!sizeof(U*), OwnPtrs_should_never_be_equal); return false; } 1045c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename U> bool operator!=(const OwnPtr<U>&) { COMPILE_ASSERT(!sizeof(U*), OwnPtrs_should_never_be_equal); return false; } 1055c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename U> bool operator==(const PassOwnPtr<U>&) { COMPILE_ASSERT(!sizeof(U*), OwnPtrs_should_never_be_equal); return false; } 1065c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename U> bool operator!=(const PassOwnPtr<U>&) { COMPILE_ASSERT(!sizeof(U*), OwnPtrs_should_never_be_equal); return false; } 1075c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1085c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType m_ptr; 1095c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) }; 1105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> template<typename U> inline OwnPtr<T>::OwnPtr(const PassOwnPtr<U>& o) 1125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) : m_ptr(o.leakPtr()) 1135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline void OwnPtr<T>::clear() 1175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType ptr = m_ptr; 1195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_ptr = 0; 1205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) deleteOwnedPtr(ptr); 1215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline PassOwnPtr<T> OwnPtr<T>::release() 1245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType ptr = m_ptr; 1265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_ptr = 0; 1275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return adoptPtr(ptr); 1285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline typename OwnPtr<T>::PtrType OwnPtr<T>::leakPtr() 1315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType ptr = m_ptr; 1335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_ptr = 0; 1345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return ptr; 1355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline OwnPtr<T>& OwnPtr<T>::operator=(const PassOwnPtr<T>& o) 1385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType ptr = m_ptr; 1405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_ptr = o.leakPtr(); 1415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ASSERT(!ptr || m_ptr != ptr); 1425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) deleteOwnedPtr(ptr); 1435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return *this; 1445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> template<typename U> inline OwnPtr<T>& OwnPtr<T>::operator=(const PassOwnPtr<U>& o) 1475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType ptr = m_ptr; 1495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_ptr = o.leakPtr(); 1505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ASSERT(!ptr || m_ptr != ptr); 1515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) deleteOwnedPtr(ptr); 1525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return *this; 1535c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#if COMPILER_SUPPORTS(CXX_RVALUE_REFERENCES) 1565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline OwnPtr<T>::OwnPtr(OwnPtr<T>&& o) 1575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) : m_ptr(o.leakPtr()) 1585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> template<typename U> inline OwnPtr<T>::OwnPtr(OwnPtr<U>&& o) 1625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) : m_ptr(o.leakPtr()) 1635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline OwnPtr<T>& OwnPtr<T>::operator=(OwnPtr<T>&& o) 1675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType ptr = m_ptr; 1695c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_ptr = o.leakPtr(); 1705c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ASSERT(!ptr || m_ptr != ptr); 1715c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) deleteOwnedPtr(ptr); 1725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return *this; 1745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1755c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1765c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> template<typename U> inline OwnPtr<T>& OwnPtr<T>::operator=(OwnPtr<U>&& o) 1775c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType ptr = m_ptr; 1795c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_ptr = o.leakPtr(); 1805c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ASSERT(!ptr || m_ptr != ptr); 1815c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) deleteOwnedPtr(ptr); 1825c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1835c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return *this; 1845c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 1865c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1875c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline void swap(OwnPtr<T>& a, OwnPtr<T>& b) 1885c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1895c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) a.swap(b); 1905c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1915c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1925c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T, typename U> inline bool operator==(const OwnPtr<T>& a, U* b) 1935c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 19402772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch return a.get() == b; 1955c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1965c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 19702772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch template<typename T, typename U> inline bool operator==(T* a, const OwnPtr<U>& b) 1985c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 19902772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch return a == b.get(); 2005c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 2015c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2025c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T, typename U> inline bool operator!=(const OwnPtr<T>& a, U* b) 2035c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 20402772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch return a.get() != b; 2055c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 2065c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2075c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T, typename U> inline bool operator!=(T* a, const OwnPtr<U>& b) 2085c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 20902772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch return a != b.get(); 2105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 2115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline typename OwnPtr<T>::PtrType getPtr(const OwnPtr<T>& p) 2135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 2145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return p.get(); 2155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 2165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} // namespace WTF 2185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)using WTF::OwnPtr; 2205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif // WTF_OwnPtr_h 222