| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| // Note that the optimizing compiler depends on the algorithm which |
| // returns a _GrowableObjectArray if length is null, otherwise returns |
| // fixed size array. |
| patch class _ListImpl<E> { |
| /* patch */ factory List([int length = null]) { |
| if (length == null) { |
| return new _GrowableObjectArray<E>(); |
| } else { |
| return new _ObjectArray<E>(length); |
| } |
| } |
| |
| /* patch */ factory List.from(Iterable<E> other) { |
| _GrowableObjectArray<E> list = new _GrowableObjectArray<E>(); |
| for (final e in other) { |
| list.add(e); |
| } |
| return list; |
| } |
| |
| // Factory constructing a mutable List from a parser generated List literal. |
| // [elements] contains elements that are already type checked. |
| factory List._fromLiteral(List elements) { |
| var list = new List<E>(); |
| if (elements.length > 0) { |
| list._setData(elements); |
| list.length = elements.length; |
| } |
| return list; |
| } |
| } |