Move files in wtf/ to platform/wtf/ (Part 11).

third_party/WebKit/Source/wtf/typed_arrays/ArrayBufferView.h

-/*
- * 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 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.
- */
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
 
-#ifndef ArrayBufferView_h
-#define ArrayBufferView_h
+#include "platform/wtf/typed_arrays/ArrayBufferView.h"
 
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
-#include "wtf/RefPtr.h"
-#include "wtf/WTFExport.h"
-#include "wtf/typed_arrays/ArrayBuffer.h"
-#include <limits.h>
-
-namespace WTF {
-
-class WTF_EXPORT ArrayBufferView : public RefCounted<ArrayBufferView> {
- public:
-  enum ViewType {
-    TypeInt8,
-    TypeUint8,
-    TypeUint8Clamped,
-    TypeInt16,
-    TypeUint16,
-    TypeInt32,
-    TypeUint32,
-    TypeFloat32,
-    TypeFloat64,
-    TypeDataView
-  };
-  virtual ViewType type() const = 0;
-  const char* typeName();
-
-  ArrayBuffer* buffer() const { return m_buffer.get(); }
-
-  void* baseAddress() const {
-    DCHECK(!isShared());
-    return m_baseAddress;
-  }
-
-  unsigned byteOffset() const { return m_byteOffset; }
-
-  virtual unsigned byteLength() const = 0;
-  virtual unsigned typeSize() const = 0;
-
-  void setNeuterable(bool flag) { m_isNeuterable = flag; }
-  bool isNeuterable() const { return m_isNeuterable; }
-  bool isShared() const { return m_buffer ? m_buffer->isShared() : false; }
-
-  virtual ~ArrayBufferView();
-
- protected:
-  ArrayBufferView(PassRefPtr<ArrayBuffer>, unsigned byteOffset);
-
-  inline bool setImpl(ArrayBufferView*, unsigned byteOffset);
-
-  // Helper to verify that a given sub-range of an ArrayBuffer is
-  // within range.
-  template <typename T>
-  static bool verifySubRange(PassRefPtr<ArrayBuffer> buffer,
-                             unsigned byteOffset,
-                             unsigned numElements) {
-    if (!buffer)
-      return false;
-    if (sizeof(T) > 1 && byteOffset % sizeof(T))
-      return false;
-    if (byteOffset > buffer->byteLength())
-      return false;
-    unsigned remainingElements =
-        (buffer->byteLength() - byteOffset) / sizeof(T);
-    if (numElements > remainingElements)
-      return false;
-    return true;
-  }
-
-  virtual void neuter();
-
-  // This is the address of the ArrayBuffer's storage, plus the byte offset.
-  void* m_baseAddress;
-
-  unsigned m_byteOffset : 31;
-  unsigned m_isNeuterable : 1;
-
- private:
-  friend class ArrayBuffer;
-  RefPtr<ArrayBuffer> m_buffer;
-  ArrayBufferView* m_prevView;
-  ArrayBufferView* m_nextView;
-};
-
-bool ArrayBufferView::setImpl(ArrayBufferView* array, unsigned byteOffset) {
-  if (byteOffset > byteLength() ||
-      byteOffset + array->byteLength() > byteLength() ||
-      byteOffset + array->byteLength() < byteOffset) {
-    // Out of range offset or overflow
-    return false;
-  }
-
-  char* base = static_cast<char*>(baseAddress());
-  memmove(base + byteOffset, array->baseAddress(), array->byteLength());
-  return true;
-}
-
-}  // namespace WTF
-
-using WTF::ArrayBufferView;
-
-#endif  // ArrayBufferView_h
+// The contents of this header was moved to platform/wtf as part of
+// WTF migration project. See the following post for details:
+// https://groups.google.com/a/chromium.org/d/msg/blink-dev/tLdAZCTlcAA/bYXVT8gYCAAJ