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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 // Immutable map class for compiler generated map literals. | 4 // Immutable map class for compiler generated map literals. |
5 | 5 |
6 class ImmutableMap<K, V> implements Map<K, V> { | 6 class ImmutableMap<K, V> implements Map<K, V> { |
7 final _ImmutableList _kvPairs; | 7 final _ImmutableList _kvPairs; |
8 | 8 |
9 const ImmutableMap._create(_ImmutableList keyValuePairs) | 9 const ImmutableMap._create(_ImmutableList keyValuePairs) |
10 : _kvPairs = keyValuePairs; | 10 : _kvPairs = keyValuePairs; |
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78 | 78 |
79 V remove(Object key) { | 79 V remove(Object key) { |
80 throw new UnsupportedError("Cannot remove from unmodifiable Map"); | 80 throw new UnsupportedError("Cannot remove from unmodifiable Map"); |
81 } | 81 } |
82 | 82 |
83 String toString() { | 83 String toString() { |
84 return Maps.mapToString(this); | 84 return Maps.mapToString(this); |
85 } | 85 } |
86 } | 86 } |
87 | 87 |
88 class _ImmutableMapKeyIterable<E> extends IterableBase<E> | 88 class _ImmutableMapKeyIterable<E> extends EfficientLengthIterable<E> { |
89 implements EfficientLength { | |
90 final ImmutableMap _map; | 89 final ImmutableMap _map; |
91 _ImmutableMapKeyIterable(this._map); | 90 _ImmutableMapKeyIterable(this._map); |
92 | 91 |
93 Iterator<E> get iterator { | 92 Iterator<E> get iterator { |
94 return new _ImmutableMapKeyIterator<E>(_map); | 93 return new _ImmutableMapKeyIterator<E>(_map); |
95 } | 94 } |
96 | 95 |
97 int get length => _map.length; | 96 int get length => _map.length; |
98 } | 97 } |
99 | 98 |
100 class _ImmutableMapValueIterable<E> extends IterableBase<E> | 99 class _ImmutableMapValueIterable<E> extends EfficientLengthIterable<E> { |
101 implements EfficientLength { | |
102 final ImmutableMap _map; | 100 final ImmutableMap _map; |
103 _ImmutableMapValueIterable(this._map); | 101 _ImmutableMapValueIterable(this._map); |
104 | 102 |
105 Iterator<E> get iterator { | 103 Iterator<E> get iterator { |
106 return new _ImmutableMapValueIterator<E>(_map); | 104 return new _ImmutableMapValueIterator<E>(_map); |
107 } | 105 } |
108 | 106 |
109 int get length => _map.length; | 107 int get length => _map.length; |
110 } | 108 } |
111 | 109 |
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145 _current = _map._kvPairs[newIndex * 2 + 1]; | 143 _current = _map._kvPairs[newIndex * 2 + 1]; |
146 return true; | 144 return true; |
147 } | 145 } |
148 _current = null; | 146 _current = null; |
149 _index = _map.length; | 147 _index = _map.length; |
150 return false; | 148 return false; |
151 } | 149 } |
152 | 150 |
153 E get current => _current; | 151 E get current => _current; |
154 } | 152 } |
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