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3 // 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 |
4 // 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 |
5 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
6 | 4 |
7 /// Base class for any AST item. Roughly corresponds to Node in the DOM. Will | 5 /// Base class for any AST item. Roughly corresponds to Node in the DOM. Will |
8 /// be either an Element or Text. | 6 /// be either an Element or Text. |
9 abstract class Node { | 7 abstract class Node { |
10 void accept(NodeVisitor visitor); | 8 void accept(NodeVisitor visitor); |
11 } | 9 } |
12 | 10 |
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56 void visitText(Text text); | 54 void visitText(Text text); |
57 | 55 |
58 /// Called when an Element has been reached, before its children have been | 56 /// Called when an Element has been reached, before its children have been |
59 /// visited. Return `false` to skip its children. | 57 /// visited. Return `false` to skip its children. |
60 bool visitElementBefore(Element element); | 58 bool visitElementBefore(Element element); |
61 | 59 |
62 /// Called when an Element has been reached, after its children have been | 60 /// Called when an Element has been reached, after its children have been |
63 /// visited. Will not be called if [visitElementBefore] returns `false`. | 61 /// visited. Will not be called if [visitElementBefore] returns `false`. |
64 void visitElementAfter(Element element); | 62 void visitElementAfter(Element element); |
65 } | 63 } |
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