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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 library yaml.utils; | 5 library yaml.utils; |
6 | 6 |
| 7 import 'package:source_span/source_span.dart'; |
| 8 |
7 /// A pair of values. | 9 /// A pair of values. |
8 class Pair<E, F> { | 10 class Pair<E, F> { |
9 final E first; | 11 final E first; |
10 final F last; | 12 final F last; |
11 | 13 |
12 Pair(this.first, this.last); | 14 Pair(this.first, this.last); |
13 | 15 |
14 String toString() => '($first, $last)'; | 16 String toString() => '($first, $last)'; |
15 } | 17 } |
| 18 |
| 19 /// Print a warning. |
| 20 /// |
| 21 /// If [span] is passed, associates the warning with that span. |
| 22 void warn(String message, [SourceSpan span]) { |
| 23 // TODO(nweiz): Print to stderr with color when issue 6943 is fixed and |
| 24 // dart:io is available. |
| 25 if (span != null) message = span.message(message); |
| 26 print(message); |
| 27 } |
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