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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 | |
3 // BSD-style license that can be found in the LICENSE file. | |
4 | |
5 // IrNodes are kept in a separate library to have precise control over their | |
6 // dependencies on other parts of the system | |
7 library ir_nodes; | |
8 | |
9 import '../dart2jslib.dart' show Constant; | |
10 | |
11 class PositionWithIdentifierName { | |
ngeoffray
2013/11/21 15:02:05
Comment.
lukas
2013/11/21 17:14:27
Done.
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12 final int offset; | |
13 final String sourceName; | |
14 PositionWithIdentifierName(this.offset, this.sourceName); | |
15 } | |
16 | |
17 abstract class IrNode { | |
18 final /* int | PositionWithIdentifierName */ position; | |
19 int get offset => | |
20 (position is PositionWithIdentifierName) ? position.offset : position; | |
21 String get sourceName => | |
22 (position is PositionWithIdentifierName) ? position.sourceName : null; | |
ngeoffray
2013/11/21 15:02:05
Spaces between functions/getters please.
lukas
2013/11/21 17:14:27
Done.
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23 const IrNode(this.position); | |
24 accept(IrNodesVisitor visitor); | |
25 } | |
26 | |
27 class IrFunction extends IrNode { | |
28 final List<IrNode> statements; | |
29 | |
30 final int endOffset; | |
31 final int namePosition; | |
32 | |
33 IrFunction(position, this.endOffset, this.namePosition, this.statements) | |
34 : super(position); | |
35 | |
36 accept(IrNodesVisitor visitor) => visitor.visitIrFunction(this); | |
37 } | |
38 | |
39 class IrReturn extends IrNode { | |
40 final IrNode value; | |
41 IrReturn(position, this.value) : super(position); | |
42 accept(IrNodesVisitor visitor) => visitor.visitIrReturn(this); | |
43 } | |
44 | |
45 class IrConstant extends IrNode { | |
46 final Constant value; | |
47 IrConstant(position, this.value) : super(position); | |
48 accept(IrNodesVisitor visitor) => visitor.visitIrConstant(this); | |
49 } | |
50 | |
51 | |
52 abstract class IrNodesVisitor<T> { | |
53 T visit(IrNode node) => node.accept(this); | |
54 void visitAll(List<IrNode> nodes) { | |
55 for (IrNode n in nodes) visit(n); | |
56 } | |
57 | |
58 T visitNode(IrNode node); | |
59 | |
60 T visitIrFunction(IrFunction node) => visitNode(node); | |
61 T visitIrReturn(IrReturn node) => visitNode(node); | |
62 T visitIrConstant(IrConstant node) => visitNode(node); | |
63 } | |
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