[es6] Unify ArrayBuffer and SharedArrayBuffer constructors.

src/runtime/runtime-typedarray.cc

 // Copyright 2014 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.
 
 #include "src/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/factory.h"
 #include "src/messages.h"
 #include "src/objects-inl.h"
 #include "src/runtime/runtime.h"
 
 namespace v8 {
 namespace internal {
 
-
-RUNTIME_FUNCTION(Runtime_ArrayBufferInitialize) {
-  HandleScope scope(isolate);
-  DCHECK(args.length() == 3);
-  CONVERT_ARG_HANDLE_CHECKED(JSArrayBuffer, holder, 0);
-  CONVERT_NUMBER_ARG_HANDLE_CHECKED(byteLength, 1);
-  CONVERT_BOOLEAN_ARG_CHECKED(is_shared, 2);
-  if (!holder->byte_length()->IsUndefined()) {
-    // ArrayBuffer is already initialized; probably a fuzz test.
-    return *holder;
-  }
-  size_t allocated_length = 0;
-  if (!TryNumberToSize(isolate, *byteLength, &allocated_length)) {
-    THROW_NEW_ERROR_RETURN_FAILURE(
-        isolate, NewRangeError(MessageTemplate::kInvalidArrayBufferLength));
-  }
-  if (!JSArrayBuffer::SetupAllocatingData(
-          holder, isolate, allocated_length, true,
-          is_shared ? SharedFlag::kShared : SharedFlag::kNotShared)) {
-    THROW_NEW_ERROR_RETURN_FAILURE(
-        isolate, NewRangeError(MessageTemplate::kArrayBufferAllocationFailed));
-  }
-  return *holder;
-}
-
-
 RUNTIME_FUNCTION(Runtime_ArrayBufferGetByteLength) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_CHECKED(JSArrayBuffer, holder, 0);
   return holder->byte_length();
 }
 
 
 RUNTIME_FUNCTION(Runtime_ArrayBufferSliceImpl) {
   HandleScope scope(isolate);
@@ skipping 11 matching lines @@
   size_t source_byte_length = NumberToSize(isolate, source->byte_length());
   RUNTIME_ASSERT(start <= source_byte_length);
   RUNTIME_ASSERT(source_byte_length - start >= target_length);
   uint8_t* source_data = reinterpret_cast<uint8_t*>(source->backing_store());
   uint8_t* target_data = reinterpret_cast<uint8_t*>(target->backing_store());
   CopyBytes(target_data, source_data + start, target_length);
   return isolate->heap()->undefined_value();
 }
 
 
-RUNTIME_FUNCTION(Runtime_ArrayBufferIsView) {
-  HandleScope scope(isolate);
-  DCHECK(args.length() == 1);
-  CONVERT_ARG_CHECKED(Object, object, 0);
-  return isolate->heap()->ToBoolean(object->IsJSArrayBufferView());
-}
-
-
 RUNTIME_FUNCTION(Runtime_ArrayBufferNeuter) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(JSArrayBuffer, array_buffer, 0);
   if (array_buffer->backing_store() == NULL) {
     CHECK(Smi::FromInt(0) == array_buffer->byte_length());
     return isolate->heap()->undefined_value();
   }
   // Shared array buffers should never be neutered.
   RUNTIME_ASSERT(!array_buffer->is_shared());
@@ skipping 603 matching lines @@
 DATA_VIEW_SETTER(Uint16, uint16_t)
 DATA_VIEW_SETTER(Int16, int16_t)
 DATA_VIEW_SETTER(Uint32, uint32_t)
 DATA_VIEW_SETTER(Int32, int32_t)
 DATA_VIEW_SETTER(Float32, float)
 DATA_VIEW_SETTER(Float64, double)
 
 #undef DATA_VIEW_SETTER
 }  // namespace internal
 }  // namespace v8