[builtins] Move builtins into own files

src/builtins/builtins-arraybuffer.cc

+// Copyright 2016 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/builtins/builtins.h"
+#include "src/builtins/builtins-utils.h"
+
+namespace v8 {
+namespace internal {
+
+// -----------------------------------------------------------------------------
+// ES6 section 21.1 ArrayBuffer Objects
+
+// ES6 section 24.1.2.1 ArrayBuffer ( length ) for the [[Call]] case.
+BUILTIN(ArrayBufferConstructor) {
+  HandleScope scope(isolate);
+  Handle<JSFunction> target = args.target<JSFunction>();
+  DCHECK(*target == target->native_context()->array_buffer_fun() ||
+         *target == target->native_context()->shared_array_buffer_fun());
+  THROW_NEW_ERROR_RETURN_FAILURE(
+      isolate, NewTypeError(MessageTemplate::kConstructorNotFunction,
+                            handle(target->shared()->name(), isolate)));
+}
+
+// ES6 section 24.1.2.1 ArrayBuffer ( length ) for the [[Construct]] case.
+BUILTIN(ArrayBufferConstructor_ConstructStub) {
+  HandleScope scope(isolate);
+  Handle<JSFunction> target = args.target<JSFunction>();
+  Handle<JSReceiver> new_target = Handle<JSReceiver>::cast(args.new_target());
+  Handle<Object> length = args.atOrUndefined(isolate, 1);
+  DCHECK(*target == target->native_context()->array_buffer_fun() ||
+         *target == target->native_context()->shared_array_buffer_fun());
+  Handle<Object> number_length;
+  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, number_length,
+                                     Object::ToInteger(isolate, length));
+  if (number_length->Number() < 0.0) {
+    THROW_NEW_ERROR_RETURN_FAILURE(
+        isolate, NewRangeError(MessageTemplate::kInvalidArrayBufferLength));
+  }
+  Handle<JSObject> result;
+  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, result,
+                                     JSObject::New(target, new_target));
+  size_t byte_length;
+  if (!TryNumberToSize(isolate, *number_length, &byte_length)) {
+    THROW_NEW_ERROR_RETURN_FAILURE(
+        isolate, NewRangeError(MessageTemplate::kInvalidArrayBufferLength));
+  }
+  SharedFlag shared_flag =
+      (*target == target->native_context()->array_buffer_fun())
+          ? SharedFlag::kNotShared
+          : SharedFlag::kShared;
+  if (!JSArrayBuffer::SetupAllocatingData(Handle<JSArrayBuffer>::cast(result),
+                                          isolate, byte_length, true,
+                                          shared_flag)) {
+    THROW_NEW_ERROR_RETURN_FAILURE(
+        isolate, NewRangeError(MessageTemplate::kArrayBufferAllocationFailed));
+  }
+  return *result;
+}
+
+// ES6 section 24.1.4.1 get ArrayBuffer.prototype.byteLength
+BUILTIN(ArrayBufferPrototypeGetByteLength) {
+  HandleScope scope(isolate);
+  CHECK_RECEIVER(JSArrayBuffer, array_buffer,
+                 "get ArrayBuffer.prototype.byteLength");
+
+  if (array_buffer->is_shared()) {
+    THROW_NEW_ERROR_RETURN_FAILURE(
+        isolate, NewTypeError(MessageTemplate::kIncompatibleMethodReceiver,
+                              isolate->factory()->NewStringFromAsciiChecked(
+                                  "get ArrayBuffer.prototype.byteLength"),
+                              args.receiver()));
+  }
+  // TODO(franzih): According to the ES6 spec, we should throw a TypeError
+  // here if the JSArrayBuffer is detached.
+  return array_buffer->byte_length();
+}
+
+// ES6 section 24.1.3.1 ArrayBuffer.isView ( arg )
+BUILTIN(ArrayBufferIsView) {
+  SealHandleScope shs(isolate);
+  DCHECK_EQ(2, args.length());
+  Object* arg = args[1];
+  return isolate->heap()->ToBoolean(arg->IsJSArrayBufferView());
+}
+
+}  // namespace internal
+}  // namespace v8