OLD | NEW |
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 // TODO(ngeoffray): Rename to Lists. | 5 // TODO(ngeoffray): Rename to Lists. |
6 class Arrays { | 6 class Arrays { |
7 static void copy(List src, int srcStart, | 7 static void copy(List src, int srcStart, |
8 List dst, int dstStart, int count) { | 8 List dst, int dstStart, int count) { |
9 if (srcStart === null) srcStart = 0; | 9 if (srcStart == null) srcStart = 0; |
10 if (dstStart === null) dstStart = 0; | 10 if (dstStart == null) dstStart = 0; |
11 | 11 |
12 if (srcStart < dstStart) { | 12 if (srcStart < dstStart) { |
13 for (int i = srcStart + count - 1, j = dstStart + count - 1; | 13 for (int i = srcStart + count - 1, j = dstStart + count - 1; |
14 i >= srcStart; i--, j--) { | 14 i >= srcStart; i--, j--) { |
15 dst[j] = src[i]; | 15 dst[j] = src[i]; |
16 } | 16 } |
17 } else { | 17 } else { |
18 for (int i = srcStart, j = dstStart; i < srcStart + count; i++, j++) { | 18 for (int i = srcStart, j = dstStart; i < srcStart + count; i++, j++) { |
19 dst[j] = src[i]; | 19 dst[j] = src[i]; |
20 } | 20 } |
21 } | 21 } |
22 } | 22 } |
23 | 23 |
24 static bool areEqual(List a, Object b) { | 24 static bool areEqual(List a, Object b) { |
25 if (a === b) return true; | 25 if (identical(a, b)) return true; |
26 if (!(b is List)) return false; | 26 if (!(b is List)) return false; |
27 int length = a.length; | 27 int length = a.length; |
28 if (length != b.length) return false; | 28 if (length != b.length) return false; |
29 | 29 |
30 for (int i = 0; i < length; i++) { | 30 for (int i = 0; i < length; i++) { |
31 if (a[i] !== b[i]) return false; | 31 if (!identical(a[i], b[i])) return false; |
32 } | 32 } |
33 return true; | 33 return true; |
34 } | 34 } |
35 | 35 |
36 /** | 36 /** |
37 * Returns the index in the list [a] of the given [element], starting | 37 * Returns the index in the list [a] of the given [element], starting |
38 * the search at index [startIndex] to [endIndex] (exclusive). | 38 * the search at index [startIndex] to [endIndex] (exclusive). |
39 * Returns -1 if [element] is not found. | 39 * Returns -1 if [element] is not found. |
40 */ | 40 */ |
41 static int indexOf(List a, | 41 static int indexOf(List a, |
(...skipping 41 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
83 if (start < 0 ) { | 83 if (start < 0 ) { |
84 String message = "$start must be greater than or equal to 0"; | 84 String message = "$start must be greater than or equal to 0"; |
85 throw new RangeError(message); | 85 throw new RangeError(message); |
86 } | 86 } |
87 if (start + length > a.length) { | 87 if (start + length > a.length) { |
88 String message = "$start + $length must be in the range [0..${a.length})"; | 88 String message = "$start + $length must be in the range [0..${a.length})"; |
89 throw new RangeError(message); | 89 throw new RangeError(message); |
90 } | 90 } |
91 } | 91 } |
92 } | 92 } |
OLD | NEW |