JavaScriptCore-903.tar.gz

[apple/javascriptcore.git] / runtime / WeakGCPtr.h

diff --git a/runtime/WeakGCPtr.h b/runtime/WeakGCPtr.h
deleted file mode 100644 (file)
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--- a/runtime/WeakGCPtr.h
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@@ -1,139 +0,0 @@
-/*
- * Copyright (C) 2009 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef WeakGCPtr_h
-#define WeakGCPtr_h
-
-#include "Collector.h"
-#include <wtf/Noncopyable.h>
-
-namespace JSC {
-
-// A smart pointer whose get() function returns 0 for cells awaiting destruction.
-template <typename T> class WeakGCPtr : Noncopyable {
-public:
-    WeakGCPtr() : m_ptr(0) { }
-    WeakGCPtr(T* ptr) { assign(ptr); }
-
-    T* get() const
-    {
-        if (!m_ptr || !Heap::isCellMarked(m_ptr))
-            return 0;
-        return m_ptr;
-    }
-    
-    bool clear(JSCell* ptr)
-    {
-        if (ptr == m_ptr) {
-            m_ptr = 0;
-            return true;
-        }
-        return false;
-    }
-
-    T& operator*() const { return *get(); }
-    T* operator->() const { return get(); }
-    
-    bool operator!() const { return !get(); }
-
-    // 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* WeakGCPtr::*UnspecifiedBoolType;
-    operator UnspecifiedBoolType() const { return get() ? &WeakGCPtr::m_ptr : 0; }
-#endif
-
-    WeakGCPtr& operator=(T*);
-
-#if !ASSERT_DISABLED
-    bool hasDeadObject() const { return !!m_ptr; }
-#endif
-
-private:
-    void assign(T* ptr)
-    {
-        ASSERT(ptr);
-        Heap::markCell(ptr);
-        m_ptr = ptr;
-    }
-
-    T* m_ptr;
-};
-
-template <typename T> inline WeakGCPtr<T>& WeakGCPtr<T>::operator=(T* optr)
-{
-    assign(optr);
-    return *this;
-}
-
-template <typename T, typename U> inline bool operator==(const WeakGCPtr<T>& a, const WeakGCPtr<U>& b)
-{ 
-    return a.get() == b.get(); 
-}
-
-template <typename T, typename U> inline bool operator==(const WeakGCPtr<T>& a, U* b)
-{ 
-    return a.get() == b; 
-}
-
-template <typename T, typename U> inline bool operator==(T* a, const WeakGCPtr<U>& b) 
-{
-    return a == b.get(); 
-}
-
-template <typename T, typename U> inline bool operator!=(const WeakGCPtr<T>& a, const WeakGCPtr<U>& b)
-{ 
-    return a.get() != b.get(); 
-}
-
-template <typename T, typename U> inline bool operator!=(const WeakGCPtr<T>& a, U* b)
-{
-    return a.get() != b; 
-}
-
-template <typename T, typename U> inline bool operator!=(T* a, const WeakGCPtr<U>& b)
-{ 
-    return a != b.get(); 
-}
-
-template <typename T, typename U> inline WeakGCPtr<T> static_pointer_cast(const WeakGCPtr<U>& p)
-{ 
-    return WeakGCPtr<T>(static_cast<T*>(p.get())); 
-}
-
-template <typename T, typename U> inline WeakGCPtr<T> const_pointer_cast(const WeakGCPtr<U>& p)
-{ 
-    return WeakGCPtr<T>(const_cast<T*>(p.get())); 
-}
-
-template <typename T> inline T* getPtr(const WeakGCPtr<T>& p)
-{
-    return p.get();
-}
-
-} // namespace JSC
-
-#endif // WeakGCPtr_h