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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, 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._collection.dev; | 5 part of dart._collection.dev; |
| 6 | 6 |
| 7 /** | 7 /** |
| 8 * Mixin that throws on the length changing operations of [List]. | 8 * Mixin that throws on the length changing operations of [List]. |
| 9 * | 9 * |
| 10 * Intended to mix-in on top of [ListMixin] for fixed-length lists. | 10 * Intended to mix-in on top of [ListMixin] for fixed-length lists. |
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| 63 E removeAt(int index) { | 63 E removeAt(int index) { |
| 64 throw new UnsupportedError( | 64 throw new UnsupportedError( |
| 65 "Cannot remove from a fixed-length list"); | 65 "Cannot remove from a fixed-length list"); |
| 66 } | 66 } |
| 67 | 67 |
| 68 E removeLast() { | 68 E removeLast() { |
| 69 throw new UnsupportedError( | 69 throw new UnsupportedError( |
| 70 "Cannot remove from a fixed-length list"); | 70 "Cannot remove from a fixed-length list"); |
| 71 } | 71 } |
| 72 | 72 |
| 73 void removeRange(int start, int length) { | 73 void removeRange(int start, int end) { |
| 74 throw new UnsupportedError( | 74 throw new UnsupportedError( |
| 75 "Cannot remove from a fixed-length list"); | 75 "Cannot remove from a fixed-length list"); |
| 76 } | 76 } |
| 77 | |
| 78 void insertRange(int start, int length, [E initialValue]) { | |
| 79 throw new UnsupportedError( | |
| 80 "Cannot insert range in a fixed-length list"); | |
| 81 } | |
| 82 } | 77 } |
| 83 | 78 |
| 84 /** | 79 /** |
| 85 * Mixin for an unmodifiable [List] class. | 80 * Mixin for an unmodifiable [List] class. |
| 86 * | 81 * |
| 87 * This overrides all mutating methods with methods that throw. | 82 * This overrides all mutating methods with methods that throw. |
| 88 * This mixin is intended to be mixed in on top of [ListMixin] on | 83 * This mixin is intended to be mixed in on top of [ListMixin] on |
| 89 * unmodifiable lists. | 84 * unmodifiable lists. |
| 90 */ | 85 */ |
| 91 abstract class UnmodifiableListMixin<E> { | 86 abstract class UnmodifiableListMixin<E> { |
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| 158 E removeLast() { | 153 E removeLast() { |
| 159 throw new UnsupportedError( | 154 throw new UnsupportedError( |
| 160 "Cannot remove from an unmodifiable list"); | 155 "Cannot remove from an unmodifiable list"); |
| 161 } | 156 } |
| 162 | 157 |
| 163 void setRange(int start, int end, Iterable<E> iterable, [int skipCount = 0]) { | 158 void setRange(int start, int end, Iterable<E> iterable, [int skipCount = 0]) { |
| 164 throw new UnsupportedError( | 159 throw new UnsupportedError( |
| 165 "Cannot modify an unmodifiable list"); | 160 "Cannot modify an unmodifiable list"); |
| 166 } | 161 } |
| 167 | 162 |
| 168 void removeRange(int start, int length) { | 163 void removeRange(int start, int end) { |
| 169 throw new UnsupportedError( | 164 throw new UnsupportedError( |
| 170 "Cannot remove from an unmodifiable list"); | 165 "Cannot remove from an unmodifiable list"); |
| 171 } | 166 } |
| 172 | |
| 173 void insertRange(int start, int length, [E initialValue]) { | |
| 174 throw new UnsupportedError( | |
| 175 "Cannot insert range in an unmodifiable list"); | |
| 176 } | |
| 177 } | 167 } |
| 178 | 168 |
| 179 /** | 169 /** |
| 180 * Abstract implementation of a fixed-length list. | 170 * Abstract implementation of a fixed-length list. |
| 181 * | 171 * |
| 182 * All operations are defined in terms of `length`, `operator[]` and | 172 * All operations are defined in terms of `length`, `operator[]` and |
| 183 * `operator[]=`, which need to be implemented. | 173 * `operator[]=`, which need to be implemented. |
| 184 */ | 174 */ |
| 185 typedef FixedLengthListBase<E> = ListBase<E> with FixedLengthListMixin<E>; | 175 typedef FixedLengthListBase<E> = ListBase<E> with FixedLengthListMixin<E>; |
| 186 | 176 |
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| 249 } | 239 } |
| 250 | 240 |
| 251 class ReversedListIterable<E> extends ListIterable<E> { | 241 class ReversedListIterable<E> extends ListIterable<E> { |
| 252 Iterable<E> _source; | 242 Iterable<E> _source; |
| 253 ReversedListIterable(this._source); | 243 ReversedListIterable(this._source); |
| 254 | 244 |
| 255 int get length => _source.length; | 245 int get length => _source.length; |
| 256 | 246 |
| 257 E elementAt(int index) => _source.elementAt(_source.length - 1 - index); | 247 E elementAt(int index) => _source.elementAt(_source.length - 1 - index); |
| 258 } | 248 } |
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