runtime/DataView.cpp

   1 /*
   2  * Copyright (C) 2013 Apple 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
   6  * are met:
   7  *
   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 AND ITS CONTRIBUTORS "AS IS" AND ANY
  15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  17  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  18  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  19  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  20  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  21  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "DataView.h"
  28
  29 #include "JSDataView.h"
  30 #include "JSGlobalObject.h"
  31
  32 namespace JSC {
  33
  34 DataView::DataView(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned byteLength)
  35     : ArrayBufferView(buffer, byteOffset)
  36     , m_byteLength(byteLength)
  37 {
  38 }
  39
  40 PassRefPtr<DataView> DataView::create(
  41     PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned byteLength)
  42 {
  43     return adoptRef(new DataView(buffer, byteOffset, byteLength));
  44 }
  45
  46 PassRefPtr<DataView> DataView::create(PassRefPtr<ArrayBuffer> passedBuffer)
  47 {
  48     RefPtr<ArrayBuffer> buffer = passedBuffer;
  49     return create(buffer, 0, buffer->byteLength());
  50 }
  51
  52 JSArrayBufferView* DataView::wrap(ExecState* exec, JSGlobalObject* globalObject)
  53 {
  54     return JSDataView::create(
  55         exec, globalObject->typedArrayStructure(TypeDataView), buffer(), byteOffset(),
  56         byteLength());
  57 }
  58
  59 } // namespace JSC
  60