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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 part of dart._interceptors; | 5 part of dart._interceptors; |
6 | 6 |
7 /** | 7 /** |
8 * The interceptor class for [List]. The compiler recognizes this | 8 * The interceptor class for [List]. The compiler recognizes this |
9 * class as an interceptor, and changes references to [:this:] to | 9 * class as an interceptor, and changes references to [:this:] to |
10 * actually use the receiver of the method, which is generated as an extra | 10 * actually use the receiver of the method, which is generated as an extra |
11 * argument added to each member. | 11 * argument added to each member. |
12 */ | 12 */ |
13 @JsPeerInterface(name: 'Array') | 13 @JsPeerInterface(name: 'Array') |
14 class JSArray<E> implements List<E>, JSIndexable<E> { | 14 class JSArray<E> implements List<E>, JSIndexable<E> { |
15 const JSArray(); | 15 const JSArray(); |
16 | 16 |
17 /** | 17 /** |
18 * Constructor for adding type parameters to an existing JavaScript | 18 * Constructor for adding type parameters to an existing JavaScript |
19 * Array. Used for creating literal lists. | 19 * Array. Used for creating literal lists. |
20 */ | 20 */ |
21 factory JSArray.of(allocation) { | 21 factory JSArray.of(list) { |
22 // TODO(sra): Move this to core.List for better readability. | 22 // TODO(sra): Move this to core.List for better readability. |
23 // Capture the parameterized ES6 'JSArray' class. | 23 // Capture the parameterized ES6 'JSArray' class. |
24 return JS('-dynamic', '#', dart.setType(allocation, JS('', 'JSArray'))); | 24 JS('', '#.__proto__ = JSArray.prototype', list); |
| 25 return JS('-dynamic', '#', list); |
25 } | 26 } |
26 | 27 |
27 // TODO(jmesserly): consider a fixed array subclass instead. | 28 // TODO(jmesserly): consider a fixed array subclass instead. |
28 factory JSArray.markFixed(allocation) => | 29 factory JSArray.fixed(list) { |
29 new JSArray<E>.of(markFixedList(allocation)); | 30 JS('', '#.__proto__ = JSArray.prototype', list); |
| 31 JS('', r'#.fixed$length = Array', list); |
| 32 return JS('-dynamic', '#', list); |
| 33 } |
30 | 34 |
31 factory JSArray.markGrowable(allocation) = JSArray<E>.of; | 35 factory JSArray.unmodifiable(list) { |
| 36 JS('', '#.__proto__ = JSArray.prototype', list); |
| 37 JS('', r'#.fixed$length = Array', list); |
| 38 JS('', r'#.immutable$list = Array', list); |
| 39 return JS('-dynamic', '#', list); |
| 40 } |
32 | 41 |
33 static List markFixedList(List list) { | 42 static void markFixedList(list) { |
34 // Functions are stored in the hidden class and not as properties in | 43 // Functions are stored in the hidden class and not as properties in |
35 // the object. We never actually look at the value, but only want | 44 // the object. We never actually look at the value, but only want |
36 // to know if the property exists. | 45 // to know if the property exists. |
37 JS('void', r'#.fixed$length = Array', list); | 46 JS('', r'#.fixed$length = Array', list); |
38 return JS('JSFixedArray', '#', list); | |
39 } | 47 } |
40 | 48 |
41 static List markUnmodifiableList(List list) { | 49 static void markUnmodifiableList(list) { |
42 // Functions are stored in the hidden class and not as properties in | 50 // Functions are stored in the hidden class and not as properties in |
43 // the object. We never actually look at the value, but only want | 51 // the object. We never actually look at the value, but only want |
44 // to know if the property exists. | 52 // to know if the property exists. |
45 JS('void', r'#.fixed$length = Array', list); | 53 JS('', r'#.fixed$length = Array', list); |
46 JS('void', r'#.immutable$list = Array', list); | 54 JS('', r'#.immutable$list = Array', list); |
47 return JS('JSUnmodifiableArray', '#', list); | |
48 } | 55 } |
49 | 56 |
50 checkMutable(reason) { | 57 checkMutable(reason) { |
51 if (JS('bool', r'#.immutable$list', this)) { | 58 if (JS('bool', r'#.immutable$list', this)) { |
52 throw new UnsupportedError(reason); | 59 throw new UnsupportedError(reason); |
53 } | 60 } |
54 } | 61 } |
55 | 62 |
56 checkGrowable(reason) { | 63 checkGrowable(reason) { |
57 if (JS('bool', r'#.fixed$length', this)) { | 64 if (JS('bool', r'#.fixed$length', this)) { |
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635 | 642 |
636 if (_index >= length) { | 643 if (_index >= length) { |
637 _current = null; | 644 _current = null; |
638 return false; | 645 return false; |
639 } | 646 } |
640 _current = _iterable[_index]; | 647 _current = _iterable[_index]; |
641 _index++; | 648 _index++; |
642 return true; | 649 return true; |
643 } | 650 } |
644 } | 651 } |
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