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| 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | |
| 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. | |
| 4 | |
| 5 // Iterator for arrays with fixed size. | |
| 6 class _FixedSizeListIterator<T> extends _VariableSizeListIterator<T> { | |
| 7 _FixedSizeListIterator(List<T> array) | |
| 8 : super(array), | |
| 9 _length = array.length; | |
| 10 | |
| 11 bool hasNext() => _length > _pos; | |
| 12 | |
| 13 final int _length; // Cache array length for faster access. | |
| 14 } | |
| 15 | |
| 16 // Iterator for arrays with variable size. | |
| 17 class _VariableSizeListIterator<T> implements Iterator<T> { | |
| 18 _VariableSizeListIterator(List<T> array) | |
| 19 : _array = array, | |
| 20 _pos = 0; | |
| 21 | |
| 22 bool hasNext() => _array.length > _pos; | |
| 23 | |
| 24 T next() { | |
| 25 if (!hasNext()) { | |
| 26 throw const NoMoreElementsException(); | |
| 27 } | |
| 28 return _array[_pos++]; | |
| 29 } | |
| 30 | |
| 31 final List<T> _array; | |
| 32 int _pos; | |
| 33 } | |
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