| // Copyright 2019 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. |
| |
| namespace runtime { |
| extern runtime ArrayIsArray(implicit context: Context)(JSAny): JSAny; |
| } // namespace runtime |
| |
| namespace array { |
| // ES #sec-array.isarray |
| javascript builtin ArrayIsArray(js-implicit context: NativeContext)(arg: JSAny): |
| JSAny { |
| // 1. Return ? IsArray(arg). |
| typeswitch (arg) { |
| case (JSArray): { |
| return True; |
| } |
| case (JSProxy): { |
| // TODO(verwaest): Handle proxies in-place |
| return runtime::ArrayIsArray(arg); |
| } |
| case (JSAny): { |
| return False; |
| } |
| } |
| } |
| } // namespace array |
