Expose ArrayBufferView::HasBuffer

include/v8.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /** \mainpage V8 API Reference Guide
  *
  * V8 is Google's open source JavaScript engine.
  *
  * This set of documents provides reference material generated from the
  * V8 header file, include/v8.h.
@@ skipping 3493 matching lines @@
    * Copy the contents of the ArrayBufferView's buffer to an embedder defined
    * memory without additional overhead that calling ArrayBufferView::Buffer
    * might incur.
    *
    * Will write at most min(|byte_length|, ByteLength) bytes starting at
    * ByteOffset of the underling buffer to the memory starting at |dest|.
    * Returns the number of bytes actually written.
    */
   size_t CopyContents(void* dest, size_t byte_length);
 
+  /**
+   * Returns true if ArrayBufferView::Buffer() is a no-op. If it returns false,

[Dmitry Lomov (no reviews), 2015/04/13 08:46:08]

'no-op' is a bad explanation of what 'Buffer' does. 

Better: "returns 'true' if ArrayBufferView's backing ArrayBuffer has already
been alllocated".

+   * getting the buffer might incur allocating a backing store and materializing
+   * the contents. In that case, CopyContents can be used to access the
+   * underlying contents of this ArrayBufferView without materializing the
+   * buffer first.
+   */
+  bool HasBuffer() const;
+
   V8_INLINE static ArrayBufferView* Cast(Value* obj);
 
   static const int kInternalFieldCount =
       V8_ARRAY_BUFFER_VIEW_INTERNAL_FIELD_COUNT;
 
  private:
   ArrayBufferView();
   static void CheckCast(Value* obj);
 };
 
@@ skipping 4562 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_