Move Source/WTF/wtf to Source/wtf

Source/WTF/wtf/TypedArrayBase.h

-/*
- * Copyright (C) 2010 Apple Inc. All rights reserved.
- * Copyright (c) 2010, Google 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 COMPUTER, INC. ``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 COMPUTER, INC. OR
- * 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 TypedArrayBase_h
-#define TypedArrayBase_h
-
-#include <wtf/ArrayBuffer.h>
-#include <wtf/ArrayBufferView.h>
-
-namespace WTF {
-
-template <typename T>
-class TypedArrayBase : public ArrayBufferView {
-  public:
-    T* data() const { return static_cast<T*>(baseAddress()); }
-
-    bool set(TypedArrayBase<T>* array, unsigned offset)
-    {
-        return setImpl(array, offset * sizeof(T));
-    }
-
-    bool setRange(const T* data, size_t dataLength, unsigned offset)
-    {
-        return setRangeImpl(reinterpret_cast<const char*>(data), dataLength * sizeof(T), offset * sizeof(T));
-    }
-
-    bool zeroRange(unsigned offset, size_t length)
-    {
-        return zeroRangeImpl(offset * sizeof(T), length * sizeof(T));
-    }
-
-    // Overridden from ArrayBufferView. This must be public because of
-    // rules about inheritance of members in template classes, and
-    // because it is accessed via pointers to subclasses.
-    unsigned length() const
-    {
-        return m_length;
-    }
-
-    virtual unsigned byteLength() const
-    {
-        return m_length * sizeof(T);
-    }
-
-    // Invoked by the indexed getter. Does not perform range checks; caller
-    // is responsible for doing so and returning undefined as necessary.
-    T item(unsigned index) const
-    {
-        ASSERT_WITH_SECURITY_IMPLICATION(index < TypedArrayBase<T>::m_length);
-        return TypedArrayBase<T>::data()[index];
-    }
-
-    bool checkInboundData(unsigned offset, unsigned pos) const
-    {
-        return (offset <= m_length
-            && offset + pos <= m_length
-            // check overflow
-            && offset + pos >= offset);
-    }
-
-protected:
-    TypedArrayBase(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length)
-        : ArrayBufferView(buffer, byteOffset)
-        , m_length(length)
-    {
-    }
-
-    template <class Subclass>
-    static PassRefPtr<Subclass> create(unsigned length)
-    {
-        RefPtr<ArrayBuffer> buffer = ArrayBuffer::create(length, sizeof(T));
-        if (!buffer.get())
-            return 0;
-        return create<Subclass>(buffer, 0, length);
-    }
-
-    template <class Subclass>
-    static PassRefPtr<Subclass> create(const T* array, unsigned length)
-    {
-        RefPtr<Subclass> a = create<Subclass>(length);
-        if (a)
-            for (unsigned i = 0; i < length; ++i)
-                a->set(i, array[i]);
-        return a;
-    }
-
-    template <class Subclass>
-    static PassRefPtr<Subclass> create(PassRefPtr<ArrayBuffer> buffer,
-                                       unsigned byteOffset,
-                                       unsigned length)
-    {
-        RefPtr<ArrayBuffer> buf(buffer);
-        if (!verifySubRange<T>(buf, byteOffset, length))
-            return 0;
-
-        return adoptRef(new Subclass(buf, byteOffset, length));
-    }
-
-    template <class Subclass>
-    static PassRefPtr<Subclass> createUninitialized(unsigned length)
-    {
-        RefPtr<ArrayBuffer> buffer = ArrayBuffer::createUninitialized(length, sizeof(T));
-        if (!buffer.get())
-            return 0;
-        return create<Subclass>(buffer, 0, length);
-    }
-
-    template <class Subclass>
-    PassRefPtr<Subclass> subarrayImpl(int start, int end) const
-    {
-        unsigned offset, length;
-        calculateOffsetAndLength(start, end, m_length, &offset, &length);
-        clampOffsetAndNumElements<T>(buffer(), m_byteOffset, &offset, &length);
-        return create<Subclass>(buffer(), offset, length);
-    }
-
-    virtual void neuter()
-    {
-        ArrayBufferView::neuter();
-        m_length = 0;
-    }
-
-    // We do not want to have to access this via a virtual function in subclasses,
-    // which is why it is protected rather than private.
-    unsigned m_length;
-};
-
-} // namespace WTF
-
-using WTF::TypedArrayBase;
-
-#endif // TypedArrayBase_h