JavaScriptCore-1097.3.tar.gz

[apple/javascriptcore.git] / wtf / OwnArrayPtr.h

diff --git a/wtf/OwnArrayPtr.h b/wtf/OwnArrayPtr.h
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--- a/wtf/OwnArrayPtr.h
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-/*
- *  Copyright (C) 2006, 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.
- *
- */
-
-#ifndef WTF_OwnArrayPtr_h
-#define WTF_OwnArrayPtr_h
-
-#include "Assertions.h"
-#include "Noncopyable.h"
-#include "NullPtr.h"
-#include "PassOwnArrayPtr.h"
-#include <algorithm>
-
-namespace WTF {
-
-template<typename T> class PassOwnArrayPtr;
-template<typename T> PassOwnArrayPtr<T> adoptArrayPtr(T*);
-
-template <typename T> class OwnArrayPtr {
-public:
-    typedef T* PtrType;
-
-    OwnArrayPtr() : m_ptr(0) { }
-
-    // See comment in PassOwnArrayPtr.h for why this takes a const reference.
-    template<typename U> OwnArrayPtr(const PassOwnArrayPtr<U>& o);
-
-    // This copy constructor is used implicitly by gcc when it generates
-    // transients for assigning a PassOwnArrayPtr<T> object to a stack-allocated
-    // OwnArrayPtr<T> object. It should never be called explicitly and gcc
-    // should optimize away the constructor when generating code.
-    OwnArrayPtr(const OwnArrayPtr<T>&);
-
-    ~OwnArrayPtr() { deleteOwnedArrayPtr(m_ptr); }
-
-    PtrType get() const { return m_ptr; }
-
-    void clear();
-    PassOwnArrayPtr<T> release();
-    PtrType leakPtr() WARN_UNUSED_RETURN;
-
-    T& operator*() const { ASSERT(m_ptr); return *m_ptr; }
-    PtrType operator->() const { ASSERT(m_ptr); return m_ptr; }
-
-    T& operator[](std::ptrdiff_t i) const { ASSERT(m_ptr); ASSERT(i >= 0); return m_ptr[i]; }
-
-    bool operator!() const { return !m_ptr; }
-
-    // This conversion operator allows implicit conversion to bool but not to other integer types.
-#if COMPILER(WINSCW)
-    operator bool() const { return m_ptr; }
-#else
-    typedef T* OwnArrayPtr::*UnspecifiedBoolType;
-    operator UnspecifiedBoolType() const { return m_ptr ? &OwnArrayPtr::m_ptr : 0; }
-#endif
-
-    OwnArrayPtr& operator=(const PassOwnArrayPtr<T>&);
-    OwnArrayPtr& operator=(std::nullptr_t) { clear(); return *this; }
-    template<typename U> OwnArrayPtr& operator=(const PassOwnArrayPtr<U>&);
-
-    void swap(OwnArrayPtr& o) { std::swap(m_ptr, o.m_ptr); }
-
-#ifdef LOOSE_OWN_ARRAY_PTR
-    explicit OwnArrayPtr(PtrType ptr) : m_ptr(ptr) { }
-    void set(PtrType);
-#endif
-
-private:
-    PtrType m_ptr;
-};
-
-template<typename T> template<typename U> inline OwnArrayPtr<T>::OwnArrayPtr(const PassOwnArrayPtr<U>& o)
-    : m_ptr(o.leakPtr())
-{
-}
-
-template<typename T> inline void OwnArrayPtr<T>::clear()
-{
-    PtrType ptr = m_ptr;
-    m_ptr = 0;
-    deleteOwnedArrayPtr(ptr);
-}
-
-template<typename T> inline PassOwnArrayPtr<T> OwnArrayPtr<T>::release()
-{
-    PtrType ptr = m_ptr;
-    m_ptr = 0;
-    return adoptArrayPtr(ptr);
-}
-
-template<typename T> inline typename OwnArrayPtr<T>::PtrType OwnArrayPtr<T>::leakPtr()
-{
-    PtrType ptr = m_ptr;
-    m_ptr = 0;
-    return ptr;
-}
-
-#ifdef LOOSE_OWN_ARRAY_PTR
-template<typename T> inline void OwnArrayPtr<T>::set(PtrType ptr)
-{
-    ASSERT(!ptr || m_ptr != ptr);
-    PtrType oldPtr = m_ptr;
-    m_ptr = ptr;
-    deleteOwnedArrayPtr(oldPtr);
-}
-#endif
-
-template<typename T> inline OwnArrayPtr<T>& OwnArrayPtr<T>::operator=(const PassOwnArrayPtr<T>& o)
-{
-    PtrType ptr = m_ptr;
-    m_ptr = o.leakPtr();
-    ASSERT(!ptr || m_ptr != ptr);
-    deleteOwnedArrayPtr(ptr);
-    return *this;
-}
-
-template<typename T> template<typename U> inline OwnArrayPtr<T>& OwnArrayPtr<T>::operator=(const PassOwnArrayPtr<U>& o)
-{
-    PtrType ptr = m_ptr;
-    m_ptr = o.leakPtr();
-    ASSERT(!ptr || m_ptr != ptr);
-    deleteOwnedArrayPtr(ptr);
-    return *this;
-}
-
-template <typename T> inline void swap(OwnArrayPtr<T>& a, OwnArrayPtr<T>& b)
-{
-    a.swap(b);
-}
-
-template<typename T, typename U> inline bool operator==(const OwnArrayPtr<T>& a, U* b)
-{
-    return a.get() == b; 
-}
-
-template<typename T, typename U> inline bool operator==(T* a, const OwnArrayPtr<U>& b) 
-{
-    return a == b.get(); 
-}
-
-template<typename T, typename U> inline bool operator!=(const OwnArrayPtr<T>& a, U* b)
-{
-    return a.get() != b; 
-}
-
-template<typename T, typename U> inline bool operator!=(T* a, const OwnArrayPtr<U>& b)
-{
-    return a != b.get(); 
-}
-
-template <typename T> inline T* getPtr(const OwnArrayPtr<T>& p)
-{
-    return p.get();
-}
-
-} // namespace WTF
-
-using WTF::OwnArrayPtr;
-
-#endif // WTF_OwnArrayPtr_h