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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 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 | 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 class GrowableObjectArray<T> implements List<T> { | 5 class GrowableObjectArray<T> implements List<T> { |
6 ObjectArray<T> backingArray; | 6 ObjectArray<T> backingArray; |
7 | 7 |
8 void copyFrom(List<Object> src, int srcStart, int dstStart, int count) { | 8 void copyFrom(List<Object> src, int srcStart, int dstStart, int count) { |
9 Arrays.copy(src, srcStart, this, dstStart, count); | 9 Arrays.copy(src, srcStart, this, dstStart, count); |
10 } | 10 } |
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59 for (int i = start; i < start + length; i++) { | 59 for (int i = start; i < start + length; i++) { |
60 backingArray[i] = initialValue; | 60 backingArray[i] = initialValue; |
61 } | 61 } |
62 } | 62 } |
63 this.length = this.length + length; | 63 this.length = this.length + length; |
64 } | 64 } |
65 | 65 |
66 List<T> getRange(int start, int length) { | 66 List<T> getRange(int start, int length) { |
67 if (length == 0) return []; | 67 if (length == 0) return []; |
68 Arrays.rangeCheck(this, start, length); | 68 Arrays.rangeCheck(this, start, length); |
69 return new List<T>.fromList(this, start, start + length); | 69 List list = new List<T>(); |
| 70 list.length = length; |
| 71 Arrays.copy(this, start, list, 0, length); |
| 72 return list; |
70 } | 73 } |
71 | 74 |
72 // The length of this growable array. It is always less than the | 75 // The length of this growable array. It is always less than the |
73 // length of the backing array. | 76 // length of the backing array. |
74 int _length; | 77 int _length; |
75 // Constant used by indexOf and lastIndexOf when the element given | 78 // Constant used by indexOf and lastIndexOf when the element given |
76 // is not in the array. | 79 // is not in the array. |
77 static final int ABSENT = -1; | 80 static final int ABSENT = -1; |
78 | 81 |
79 GrowableObjectArray() | 82 GrowableObjectArray() |
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233 if (!hasNext()) { | 236 if (!hasNext()) { |
234 throw const NoMoreElementsException(); | 237 throw const NoMoreElementsException(); |
235 } | 238 } |
236 return _array[_pos++]; | 239 return _array[_pos++]; |
237 } | 240 } |
238 | 241 |
239 final GrowableObjectArray<T> _array; | 242 final GrowableObjectArray<T> _array; |
240 int _pos; | 243 int _pos; |
241 } | 244 } |
242 | 245 |
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