15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved. 31e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) * Copyright (C) 2013 Intel Corporation. All rights reserved. 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * This library is free software; you can redistribute it and/or 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modify it under the terms of the GNU Library General Public 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * License as published by the Free Software Foundation; either 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * version 2 of the License, or (at your option) any later version. 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * This library is distributed in the hope that it will be useful, 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * but WITHOUT ANY WARRANTY; without even the implied warranty of 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Library General Public License for more details. 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * You should have received a copy of the GNU Library General Public License 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * along with this library; see the file COPYING.LIB. If not, write to 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Boston, MA 02110-1301, USA. 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifndef WTF_OwnPtr_h 235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define WTF_OwnPtr_h 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 25f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu#include "wtf/HashTableDeletedValueType.h" 26591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch#include "wtf/Noncopyable.h" 27591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch#include "wtf/NullPtr.h" 28591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch#include "wtf/OwnPtrCommon.h" 295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include <algorithm> 305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)namespace WTF { 325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> class PassOwnPtr; 345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> class OwnPtr { 365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#if COMPILER_SUPPORTS(CXX_RVALUE_REFERENCES) 375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // If rvalue references are not supported, the copy constructor is 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // public so OwnPtr cannot be marked noncopyable. See note below. 395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) WTF_MAKE_NONCOPYABLE(OwnPtr); 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 41e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch WTF_DISALLOW_CONSTRUCTION_FROM_ZERO(OwnPtr); 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) public: 431e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) typedef typename RemoveExtent<T>::Type ValueType; 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) typedef ValueType* PtrType; 455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr() : m_ptr(0) { } 475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr(std::nullptr_t) : m_ptr(0) { } 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // See comment in PassOwnPtr.h for why this takes a const reference. 501e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) OwnPtr(const PassOwnPtr<T>&); 518abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) template<typename U> OwnPtr(const PassOwnPtr<U>&, EnsurePtrConvertibleArgDecl(U, T)); 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 53f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu // Hash table deleted values, which are only constructed and never copied or destroyed. 54f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu OwnPtr(HashTableDeletedValueType) : m_ptr(hashTableDeletedValue()) { } 55f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu bool isHashTableDeletedValue() const { return m_ptr == hashTableDeletedValue(); } 56f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#if !COMPILER_SUPPORTS(CXX_RVALUE_REFERENCES) 585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // This copy constructor is used implicitly by gcc when it generates 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // transients for assigning a PassOwnPtr<T> object to a stack-allocated 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // OwnPtr<T> object. It should never be called explicitly and gcc 615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // should optimize away the constructor when generating code. 621e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) OwnPtr(const OwnPtr&); 635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 658abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) ~OwnPtr() 668abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) { 671e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) OwnedPtrDeleter<T>::deletePtr(m_ptr); 688abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) m_ptr = 0; 698abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) } 705c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 715c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType get() const { return m_ptr; } 725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void clear(); 745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PassOwnPtr<T> release(); 755c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType leakPtr() WARN_UNUSED_RETURN; 765c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 775c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ValueType& operator*() const { ASSERT(m_ptr); return *m_ptr; } 785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType operator->() const { ASSERT(m_ptr); return m_ptr; } 795c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 801e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) ValueType& operator[](std::ptrdiff_t i) const; 811e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) 825c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool operator!() const { return !m_ptr; } 835c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 845c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // This conversion operator allows implicit conversion to bool but not to other integer types. 855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) typedef PtrType OwnPtr::*UnspecifiedBoolType; 865c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) operator UnspecifiedBoolType() const { return m_ptr ? &OwnPtr::m_ptr : 0; } 875c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 885c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr& operator=(const PassOwnPtr<T>&); 895c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr& operator=(std::nullptr_t) { clear(); return *this; } 905c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename U> OwnPtr& operator=(const PassOwnPtr<U>&); 915c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 925c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#if COMPILER_SUPPORTS(CXX_RVALUE_REFERENCES) 935c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr(OwnPtr&&); 945c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename U> OwnPtr(OwnPtr<U>&&); 955c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 965c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr& operator=(OwnPtr&&); 975c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename U> OwnPtr& operator=(OwnPtr<U>&&); 985c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 995c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1005c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void swap(OwnPtr& o) { std::swap(m_ptr, o.m_ptr); } 1015c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 102f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu static T* hashTableDeletedValue() { return reinterpret_cast<T*>(-1); } 103f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu 1045c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) private: 1055c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#if !COMPILER_SUPPORTS(CXX_RVALUE_REFERENCES) 1065c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // If rvalue references are supported, noncopyable takes care of this. 1075c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr& operator=(const OwnPtr&); 1085c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 1095c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // We should never have two OwnPtrs for the same underlying object (otherwise we'll get 1115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // double-destruction), so these equality operators should never be needed. 11219cde67944066db31e633d9e386f2aa9bf9fadb3Torne (Richard Coles) template<typename U> bool operator==(const OwnPtr<U>&) const { COMPILE_ASSERT(!sizeof(U*), OwnPtrs_should_never_be_equal); return false; } 11319cde67944066db31e633d9e386f2aa9bf9fadb3Torne (Richard Coles) template<typename U> bool operator!=(const OwnPtr<U>&) const { COMPILE_ASSERT(!sizeof(U*), OwnPtrs_should_never_be_equal); return false; } 11419cde67944066db31e633d9e386f2aa9bf9fadb3Torne (Richard Coles) template<typename U> bool operator==(const PassOwnPtr<U>&) const { COMPILE_ASSERT(!sizeof(U*), OwnPtrs_should_never_be_equal); return false; } 11519cde67944066db31e633d9e386f2aa9bf9fadb3Torne (Richard Coles) template<typename U> bool operator!=(const PassOwnPtr<U>&) const { COMPILE_ASSERT(!sizeof(U*), OwnPtrs_should_never_be_equal); return false; } 1165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType m_ptr; 1185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) }; 1195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1201e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) template<typename T> inline OwnPtr<T>::OwnPtr(const PassOwnPtr<T>& o) 1211e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) : m_ptr(o.leakPtr()) 1221e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) { 1231e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) } 1241e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) 1258abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) template<typename T> template<typename U> inline OwnPtr<T>::OwnPtr(const PassOwnPtr<U>& o, EnsurePtrConvertibleArgDefn(U, T)) 1265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) : m_ptr(o.leakPtr()) 1275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1281e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) COMPILE_ASSERT(!IsArray<T>::value, Pointers_to_array_must_never_be_converted); 1295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline void OwnPtr<T>::clear() 1325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType ptr = m_ptr; 1345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_ptr = 0; 1351e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) OwnedPtrDeleter<T>::deletePtr(ptr); 1365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline PassOwnPtr<T> OwnPtr<T>::release() 1395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType ptr = m_ptr; 1415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_ptr = 0; 1421e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) return PassOwnPtr<T>(ptr); 1435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline typename OwnPtr<T>::PtrType OwnPtr<T>::leakPtr() 1465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType ptr = m_ptr; 1485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_ptr = 0; 1495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return ptr; 1505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1521e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) template<typename T> inline typename OwnPtr<T>::ValueType& OwnPtr<T>::operator[](std::ptrdiff_t i) const 1531e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) { 1541e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) COMPILE_ASSERT(IsArray<T>::value, Elements_access_is_possible_for_arrays_only); 1551e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) ASSERT(m_ptr); 1561e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) ASSERT(i >= 0); 1571e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) return m_ptr[i]; 1581e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) } 1591e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) 1605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline OwnPtr<T>& OwnPtr<T>::operator=(const PassOwnPtr<T>& o) 1615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType ptr = m_ptr; 1635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_ptr = o.leakPtr(); 1645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ASSERT(!ptr || m_ptr != ptr); 1651e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) OwnedPtrDeleter<T>::deletePtr(ptr); 1665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return *this; 1675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1695c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> template<typename U> inline OwnPtr<T>& OwnPtr<T>::operator=(const PassOwnPtr<U>& o) 1705c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1711e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) COMPILE_ASSERT(!IsArray<T>::value, Pointers_to_array_must_never_be_converted); 1725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType ptr = m_ptr; 1735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_ptr = o.leakPtr(); 1745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ASSERT(!ptr || m_ptr != ptr); 1751e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) OwnedPtrDeleter<T>::deletePtr(ptr); 1765c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return *this; 1775c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1795c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#if COMPILER_SUPPORTS(CXX_RVALUE_REFERENCES) 1805c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline OwnPtr<T>::OwnPtr(OwnPtr<T>&& o) 1815c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) : m_ptr(o.leakPtr()) 1825c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1835c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1845c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> template<typename U> inline OwnPtr<T>::OwnPtr(OwnPtr<U>&& o) 1865c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) : m_ptr(o.leakPtr()) 1875c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1881e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) COMPILE_ASSERT(!IsArray<T>::value, Pointers_to_array_must_never_be_converted); 1895c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1905c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1915c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline OwnPtr<T>& OwnPtr<T>::operator=(OwnPtr<T>&& o) 1925c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1935c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType ptr = m_ptr; 1945c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_ptr = o.leakPtr(); 1955c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ASSERT(!ptr || m_ptr != ptr); 1961e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) OwnedPtrDeleter<T>::deletePtr(ptr); 1975c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1985c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return *this; 1995c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 2005c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2015c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> template<typename U> inline OwnPtr<T>& OwnPtr<T>::operator=(OwnPtr<U>&& o) 2025c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 2031e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) COMPILE_ASSERT(!IsArray<T>::value, Pointers_to_array_must_never_be_converted); 2045c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PtrType ptr = m_ptr; 2055c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_ptr = o.leakPtr(); 2065c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ASSERT(!ptr || m_ptr != ptr); 2071e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) OwnedPtrDeleter<T>::deletePtr(ptr); 2085c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2095c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return *this; 2105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 2115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 2125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline void swap(OwnPtr<T>& a, OwnPtr<T>& b) 2145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 2155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) a.swap(b); 2165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 2175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T, typename U> inline bool operator==(const OwnPtr<T>& a, U* b) 2195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 22002772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch return a.get() == b; 2215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 2225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 22302772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch template<typename T, typename U> inline bool operator==(T* a, const OwnPtr<U>& b) 2245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 22502772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch return a == b.get(); 2265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 2275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T, typename U> inline bool operator!=(const OwnPtr<T>& a, U* b) 2295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 23002772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch return a.get() != b; 2315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 2325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T, typename U> inline bool operator!=(T* a, const OwnPtr<U>& b) 2345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 23502772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch return a != b.get(); 2365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 2375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline typename OwnPtr<T>::PtrType getPtr(const OwnPtr<T>& p) 2395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 2405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return p.get(); 2415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 2425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} // namespace WTF 2445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)using WTF::OwnPtr; 2465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif // WTF_OwnPtr_h 248