Remove OwnPtr from Blink.

third_party/WebKit/Source/wtf/OwnPtr.h

-/*
- *  Copyright (C) 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
- *  Copyright (C) 2013 Intel Corporation. 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.
- *
- */
-
-#ifndef WTF_OwnPtr_h
-#define WTF_OwnPtr_h
-
-#include "wtf/Allocator.h"
-#include "wtf/Compiler.h"
-#include "wtf/Forward.h"
-#include "wtf/HashTableDeletedValueType.h"
-#include "wtf/Noncopyable.h"
-#include "wtf/OwnPtrCommon.h"
-#include <algorithm>
-#include <utility>
-
-namespace WTF {
-
-template <typename T> class OwnPtr {
-    USING_FAST_MALLOC(OwnPtr);
-    WTF_MAKE_NONCOPYABLE(OwnPtr);
-public:
-    template <typename U> friend PassOwnPtr<U> adoptPtr(U* ptr);
-    template <typename U> friend PassOwnPtr<U[]> adoptArrayPtr(U* ptr);
-
-    typedef typename std::remove_extent<T>::type ValueType;
-    typedef ValueType* PtrType;
-
-    OwnPtr() : m_ptr(nullptr) {}
-    OwnPtr(std::nullptr_t) : m_ptr(nullptr) {}
-
-    // Hash table deleted values, which are only constructed and never copied or
-    // destroyed.
-    OwnPtr(HashTableDeletedValueType) : m_ptr(hashTableDeletedValue()) {}
-    bool isHashTableDeletedValue() const { return m_ptr == hashTableDeletedValue(); }
-
-    ~OwnPtr()
-    {
-        OwnedPtrDeleter<T>::deletePtr(m_ptr);
-        m_ptr = nullptr;
-    }
-
-    PtrType get() const { return m_ptr; }
-
-    void reset();
-
-    PtrType leakPtr() WARN_UNUSED_RETURN;
-
-    ValueType& operator*() const { ASSERT(m_ptr); return *m_ptr; }
-    PtrType operator->() const { ASSERT(m_ptr); return m_ptr; }
-
-    ValueType& operator[](std::ptrdiff_t i) const;
-
-    bool operator!() const { return !m_ptr; }
-    explicit operator bool() const { return m_ptr; }
-
-    OwnPtr& operator=(std::nullptr_t) { reset(); return *this; }
-
-    OwnPtr(OwnPtr&&);
-    template <typename U, typename = typename std::enable_if<std::is_convertible<U*, T*>::value>::type> OwnPtr(OwnPtr<U>&&);
-
-    OwnPtr& operator=(OwnPtr&&);
-    template <typename U> OwnPtr& operator=(OwnPtr<U>&&);
-
-    void swap(OwnPtr& o) { std::swap(m_ptr, o.m_ptr); }
-
-    static T* hashTableDeletedValue() { return reinterpret_cast<T*>(-1); }
-
-private:
-    explicit OwnPtr(PtrType ptr) : m_ptr(ptr) {}
-
-    // We should never have two OwnPtrs for the same underlying object
-    // (otherwise we'll get double-destruction), so these equality operators
-    // should never be needed.
-    template <typename U> bool operator==(const OwnPtr<U>&) const
-    {
-        static_assert(!sizeof(U*), "OwnPtrs should never be equal");
-        return false;
-    }
-    template <typename U> bool operator!=(const OwnPtr<U>&) const
-    {
-        static_assert(!sizeof(U*), "OwnPtrs should never be equal");
-        return false;
-    }
-
-    PtrType m_ptr;
-};
-
-template <typename T> inline void OwnPtr<T>::reset()
-{
-    PtrType ptr = m_ptr;
-    m_ptr = nullptr;
-    OwnedPtrDeleter<T>::deletePtr(ptr);
-}
-
-template <typename T> inline typename OwnPtr<T>::PtrType OwnPtr<T>::leakPtr()
-{
-    PtrType ptr = m_ptr;
-    m_ptr = nullptr;
-    return ptr;
-}
-
-template <typename T> inline typename OwnPtr<T>::ValueType& OwnPtr<T>::operator[](std::ptrdiff_t i) const
-{
-    static_assert(std::is_array<T>::value, "elements access is possible for arrays only");
-    ASSERT(m_ptr);
-    ASSERT(i >= 0);
-    return m_ptr[i];
-}
-
-template <typename T> inline OwnPtr<T>::OwnPtr(OwnPtr<T>&& o)
-    : m_ptr(o.leakPtr())
-{
-}
-
-template <typename T>
-template <typename U, typename> inline OwnPtr<T>::OwnPtr(OwnPtr<U>&& o)
-    : m_ptr(o.leakPtr())
-{
-    static_assert(!std::is_array<T>::value, "pointers to array must never be converted");
-}
-
-template <typename T> inline OwnPtr<T>& OwnPtr<T>::operator=(OwnPtr<T>&& o)
-{
-    PtrType ptr = m_ptr;
-    m_ptr = o.leakPtr();
-    ASSERT(!ptr || m_ptr != ptr);
-    OwnedPtrDeleter<T>::deletePtr(ptr);
-
-    return *this;
-}
-
-template <typename T>
-template <typename U> inline OwnPtr<T>& OwnPtr<T>::operator=(OwnPtr<U>&& o)
-{
-    static_assert(!std::is_array<T>::value, "pointers to array must never be converted");
-    PtrType ptr = m_ptr;
-    m_ptr = o.leakPtr();
-    ASSERT(!ptr || m_ptr != ptr);
-    OwnedPtrDeleter<T>::deletePtr(ptr);
-
-    return *this;
-}
-
-template <typename T> inline void swap(OwnPtr<T>& a, OwnPtr<T>& b)
-{
-    a.swap(b);
-}
-
-template <typename T, typename U> inline bool operator==(const OwnPtr<T>& a, U* b)
-{
-    return a.get() == b;
-}
-
-template <typename T, typename U> inline bool operator==(T* a, const OwnPtr<U>& b)
-{
-    return a == b.get();
-}
-
-template <typename T, typename U> inline bool operator!=(const OwnPtr<T>& a, U* b)
-{
-    return a.get() != b;
-}
-
-template <typename T, typename U> inline bool operator!=(T* a, const OwnPtr<U>& b)
-{
-    return a != b.get();
-}
-
-template <typename T> inline typename OwnPtr<T>::PtrType getPtr(const OwnPtr<T>& p)
-{
-    return p.get();
-}
-
-} // namespace WTF
-
-using WTF::OwnPtr;
-
-#endif // WTF_OwnPtr_h