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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 // Note that the optimizing compiler depends on the algorithm which | 5 // Note that the optimizing compiler depends on the algorithm which |
6 // returns a _GrowableObjectArray if length is null, otherwise returns | 6 // returns a _GrowableObjectArray if length is null, otherwise returns |
7 // fixed size array. | 7 // fixed size array. |
8 patch class _ListImpl<E> { | 8 patch class List<E> { |
9 /* patch */ factory List([int length = null]) { | 9 /* patch */ factory List([int length = null]) { |
10 if (length == null) { | 10 if (length == null) { |
11 return new _GrowableObjectArray<E>(); | 11 return new _GrowableObjectArray<E>(); |
12 } else { | 12 } else { |
13 return new _ObjectArray<E>(length); | 13 return new _ObjectArray<E>(length); |
14 } | 14 } |
15 } | 15 } |
16 | 16 |
17 /* patch */ factory List.from(Iterable<E> other) { | |
18 _GrowableObjectArray<E> list = new _GrowableObjectArray<E>(); | |
19 for (final e in other) { | |
20 list.add(e); | |
21 } | |
22 return list; | |
23 } | |
24 | |
25 // Factory constructing a mutable List from a parser generated List literal. | 17 // Factory constructing a mutable List from a parser generated List literal. |
26 // [elements] contains elements that are already type checked. | 18 // [elements] contains elements that are already type checked. |
27 factory List._fromLiteral(List elements) { | 19 factory List._fromLiteral(List elements) { |
28 var list = new List<E>(); | 20 var list = new List<E>(); |
29 if (elements.length > 0) { | 21 if (elements.length > 0) { |
30 list._setData(elements); | 22 list._setData(elements); |
31 list.length = elements.length; | 23 list.length = elements.length; |
32 } | 24 } |
33 return list; | 25 return list; |
34 } | 26 } |
35 } | 27 } |
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