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      1 /*
      2  * Copyright (C) 2009 Apple Inc. All rights reserved.
      3  * Copyright (C) 2009 Google Inc. All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     21  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     22  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #ifndef Uint8Array_h
     28 #define Uint8Array_h
     29 
     30 #include "IntegralTypedArrayBase.h"
     31 
     32 namespace WebCore {
     33 
     34 class ArrayBuffer;
     35 
     36 class Uint8Array : public IntegralTypedArrayBase<unsigned char> {
     37 public:
     38     static PassRefPtr<Uint8Array> create(unsigned length);
     39     static PassRefPtr<Uint8Array> create(unsigned char* array, unsigned length);
     40     static PassRefPtr<Uint8Array> create(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length);
     41 
     42     // Cant use "using" here due to a bug in the RVCT compiler.
     43     void set(TypedArrayBase<unsigned char>* array, unsigned offset, ExceptionCode& ec) { TypedArrayBase<unsigned char>::set(array, offset, ec); }
     44     void set(unsigned index, double value) { IntegralTypedArrayBase<unsigned char>::set(index, value); }
     45 
     46     PassRefPtr<Uint8Array> subarray(int start) const;
     47     PassRefPtr<Uint8Array> subarray(int start, int end) const;
     48 
     49 private:
     50     Uint8Array(PassRefPtr<ArrayBuffer> buffer,
     51                            unsigned byteOffset,
     52                            unsigned length);
     53     // Make constructor visible to superclass.
     54     friend class TypedArrayBase<unsigned char>;
     55 
     56     // Overridden from ArrayBufferView.
     57     virtual bool isUnsignedByteArray() const { return true; }
     58 };
     59 
     60 } // namespace WebCore
     61 
     62 #endif // Uint8Array_h
     63