third_party/WebKit/Source/web/WebArrayBuffer.cpp

   1 /*
   2  * Copyright (C) 2011 Google Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  *     * Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *     * Redistributions in binary form must reproduce the above
  11  * copyright notice, this list of conditions and the following disclaimer
  12  * in the documentation and/or other materials provided with the
  13  * distribution.
  14  *     * Neither the name of Google Inc. nor the names of its
  15  * contributors may be used to endorse or promote products derived from
  16  * this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "config.h"
  32 #include "public/web/WebArrayBuffer.h"
  33
  34 #include "core/dom/DOMArrayBuffer.h"
  35 #include "wtf/PassOwnPtr.h"
  36
  37 namespace blink {
  38
  39 WebArrayBuffer WebArrayBuffer::create(unsigned numElements, unsigned elementByteSize)
  40 {
  41     return WebArrayBuffer(DOMArrayBuffer::create(numElements, elementByteSize));
  42 }
  43
  44 void WebArrayBuffer::reset()
  45 {
  46     m_private.reset();
  47 }
  48
  49 void WebArrayBuffer::assign(const WebArrayBuffer& other)
  50 {
  51     m_private = other.m_private;
  52 }
  53
  54 void* WebArrayBuffer::data() const
  55 {
  56     if (!isNull())
  57         return const_cast<void*>(m_private->data());
  58     return 0;
  59 }
  60
  61 unsigned WebArrayBuffer::byteLength() const
  62 {
  63     if (!isNull())
  64         return m_private->byteLength();
  65     return 0;
  66 }
  67
  68 WebArrayBuffer::WebArrayBuffer(const PassRefPtr<DOMArrayBuffer>& buffer)
  69     : m_private(buffer)
  70 {
  71 }
  72
  73 WebArrayBuffer& WebArrayBuffer::operator=(const PassRefPtr<DOMArrayBuffer>& buffer)
  74 {
  75     m_private = buffer;
  76     return *this;
  77 }
  78
  79 WebArrayBuffer::operator PassRefPtr<DOMArrayBuffer>() const
  80 {
  81     return m_private.get();
  82 }
  83
  84 } // namespace blink