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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 // The _GrowableArrayMarker class is used to signal to the List() factory | 5 // The _GrowableArrayMarker class is used to signal to the List() factory |
6 // whether a parameter was passed. | 6 // whether a parameter was passed. |
7 class _GrowableArrayMarker implements int { | 7 class _GrowableArrayMarker implements int { |
8 const _GrowableArrayMarker(); | 8 const _GrowableArrayMarker(); |
9 } | 9 } |
10 | 10 |
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40 list[i++] = element; | 40 list[i++] = element; |
41 } | 41 } |
42 } | 42 } |
43 return list; | 43 return list; |
44 } | 44 } |
45 List<E> list = new _GrowableList<E>(0); | 45 List<E> list = new _GrowableList<E>(0); |
46 for (E e in elements) { | 46 for (E e in elements) { |
47 list.add(e); | 47 list.add(e); |
48 } | 48 } |
49 if (growable) return list; | 49 if (growable) return list; |
| 50 if (list.length == 0) { |
| 51 // Avoid getting an immutable list from makeListFixedLength. |
| 52 return new _List<E>(0); |
| 53 } |
50 return makeListFixedLength(list); | 54 return makeListFixedLength(list); |
51 } | 55 } |
52 | 56 |
53 @patch | 57 @patch |
54 factory List.unmodifiable(Iterable elements) { | 58 factory List.unmodifiable(Iterable elements) { |
55 List result = new List<E>.from(elements, growable: false); | 59 List result = new List<E>.from(elements, growable: false); |
56 return makeFixedListUnmodifiable(result); | 60 return makeFixedListUnmodifiable(result); |
57 } | 61 } |
58 | 62 |
59 // The List factory constructor redirects to this one so that we can change | 63 // The List factory constructor redirects to this one so that we can change |
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71 // [elements] contains elements that are already type checked. | 75 // [elements] contains elements that are already type checked. |
72 factory List._fromLiteral(List elements) { | 76 factory List._fromLiteral(List elements) { |
73 if (elements.isEmpty) { | 77 if (elements.isEmpty) { |
74 return new _GrowableList<E>(0); | 78 return new _GrowableList<E>(0); |
75 } | 79 } |
76 var result = new _GrowableList<E>.withData(elements); | 80 var result = new _GrowableList<E>.withData(elements); |
77 result._setLength(elements.length); | 81 result._setLength(elements.length); |
78 return result; | 82 return result; |
79 } | 83 } |
80 } | 84 } |
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