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1 // Copyright (c) 2017, 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 library kernel.transformations.argument_extraction_for_redirecting; | |
6 | |
7 import '../ast.dart' | |
8 show | |
9 Constructor, | |
10 FieldInitializer, | |
11 Initializer, | |
12 Library, | |
13 LocalInitializer, | |
14 Program, | |
15 VariableDeclaration, | |
16 VariableGet; | |
17 import '../core_types.dart' show CoreTypes; | |
18 import '../visitor.dart' show Transformer; | |
19 | |
20 Program transformProgram(CoreTypes coreTypes, Program program) { | |
21 new ArgumentExtractionForRedirecting().visitProgram(program); | |
22 return program; | |
23 } | |
24 | |
25 void transformLibraries(CoreTypes coreTypes, List<Library> libraries) { | |
26 var transformer = new ArgumentExtractionForRedirecting(); | |
27 for (var library in libraries) { | |
28 transformer.visitLibrary(library); | |
29 } | |
30 } | |
31 | |
32 class ArgumentExtractionForRedirecting extends Transformer { | |
Dmitry Stefantsov
2017/07/14 00:34:17
Please, see the comments for argument_extraction_f
sjindel
2017/07/14 08:49:45
I meant to delete this file.
| |
33 visitConstructor(Constructor node) { | |
34 var newInits = <Initializer>[]; | |
35 | |
36 int i = 0; | |
37 for (var fi in node.initializers) { | |
38 if (fi is FieldInitializer) { | |
39 if (!fi.field.name.name.endsWith("_li")) { | |
40 newInits.add(fi); | |
41 continue; | |
42 } | |
43 | |
44 // Move the body of the initializer to a new local initializer, and | |
45 // eta-expand the reference to the local initializer in the body of the | |
46 // field initializer. | |
47 | |
48 var value = fi.value; | |
49 | |
50 var decl = new VariableDeclaration('#li_$i'); | |
51 decl.initializer = value; | |
52 var li = new LocalInitializer(decl); | |
53 li.parent = node; | |
54 newInits.add(li); | |
55 | |
56 fi.value = new VariableGet(decl); | |
57 fi.value.parent = fi; | |
58 | |
59 ++i; | |
60 newInits.add(fi); | |
61 } else { | |
62 newInits.add(fi); | |
63 } | |
64 } | |
65 | |
66 node.initializers = newInits; | |
67 return super.visitConstructor(node); | |
68 } | |
69 } | |
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