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1 // Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file | 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 | 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 import 'package:kernel/ast.dart'; | 5 import 'package:kernel/ast.dart'; |
6 import 'package:kernel/binary/ast_to_binary.dart'; | 6 import 'package:kernel/binary/ast_to_binary.dart'; |
7 | 7 |
8 /// Writes libraries that satisfy the [predicate]. | 8 /// Writes libraries that satisfy the [predicate]. |
9 /// | 9 /// |
10 /// Only the referenced subset of canonical names is indexed and written, | 10 /// Only the referenced subset of canonical names is indexed and written, |
11 /// so we don't waste time indexing all libraries of a program, when only | 11 /// so we don't waste time indexing all libraries of a program, when only |
12 /// a tiny subset is used. | 12 /// a tiny subset is used. |
13 class LimitedBinaryPrinter extends BinaryPrinter { | 13 class LimitedBinaryPrinter extends BinaryPrinter { |
14 final LibraryFilter predicate; | 14 final LibraryFilter predicate; |
15 | 15 |
16 /// Excludes all uriToSource information. | 16 LimitedBinaryPrinter(Sink<List<int>> sink, this.predicate) |
17 /// | |
18 /// By default the [predicate] above will only exclude canonical names and | |
19 /// kernel libraries, but it will still emit the sources for all libraries. | |
20 /// filtered by libraries matching [predicate]. | |
21 // TODO(sigmund): provide a way to filter sources directly based on | |
22 // [predicate]. That requires special logic to handle sources from part files. | |
23 final bool excludeUriToSource; | |
24 | |
25 LimitedBinaryPrinter( | |
26 Sink<List<int>> sink, this.predicate, this.excludeUriToSource) | |
27 : super(sink, stringIndexer: new ReferencesStringIndexer()); | 17 : super(sink, stringIndexer: new ReferencesStringIndexer()); |
28 | 18 |
29 @override | 19 @override |
30 void computeCanonicalNames(Program program) { | 20 void computeCanonicalNames(Program program) { |
31 for (var library in program.libraries) { | 21 for (var library in program.libraries) { |
32 if (predicate(library)) { | 22 if (predicate(library)) { |
33 program.root | 23 program.root |
34 .getChildFromUri(library.importUri) | 24 .getChildFromUri(library.importUri) |
35 .bindTo(library.reference); | 25 .bindTo(library.reference); |
36 library.computeCanonicalNames(); | 26 library.computeCanonicalNames(); |
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71 void writeNode(Node node) { | 61 void writeNode(Node node) { |
72 if (node is Library && !predicate(node)) return; | 62 if (node is Library && !predicate(node)) return; |
73 node.accept(this); | 63 node.accept(this); |
74 } | 64 } |
75 | 65 |
76 @override | 66 @override |
77 void writeProgramIndex(Program program, List<Library> libraries) { | 67 void writeProgramIndex(Program program, List<Library> libraries) { |
78 var librariesToWrite = libraries.where(predicate).toList(); | 68 var librariesToWrite = libraries.where(predicate).toList(); |
79 super.writeProgramIndex(program, librariesToWrite); | 69 super.writeProgramIndex(program, librariesToWrite); |
80 } | 70 } |
81 | |
82 void writeUriToSource(Program program) { | |
83 if (!excludeUriToSource) { | |
84 super.writeUriToSource(program); | |
85 } else { | |
86 // Emit a practically empty uriToSrouce table. | |
87 writeStringTable(new StringIndexer()); | |
88 | |
89 // Add an entry for '', which is always included by default. | |
90 writeUtf8Bytes(const <int>[]); | |
91 writeUInt30(0); | |
92 } | |
93 } | |
94 } | 71 } |
95 | 72 |
96 /// Extension of [StringIndexer] that also indexes canonical names of | 73 /// Extension of [StringIndexer] that also indexes canonical names of |
97 /// referenced classes and members. | 74 /// referenced classes and members. |
98 class ReferencesStringIndexer extends StringIndexer { | 75 class ReferencesStringIndexer extends StringIndexer { |
99 final List<CanonicalName> referencedNames = <CanonicalName>[]; | 76 final List<CanonicalName> referencedNames = <CanonicalName>[]; |
100 | 77 |
101 @override | 78 @override |
102 defaultMemberReference(Member node) { | 79 defaultMemberReference(Member node) { |
103 _handleReferencedName(node.canonicalName); | 80 _handleReferencedName(node.canonicalName); |
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145 } | 122 } |
146 | 123 |
147 void _handleReferencedName(CanonicalName name) { | 124 void _handleReferencedName(CanonicalName name) { |
148 if (name == null || name.parent == null) return; | 125 if (name == null || name.parent == null) return; |
149 _handleReferencedName(name.parent); | 126 _handleReferencedName(name.parent); |
150 referencedNames.add(name); | 127 referencedNames.add(name); |
151 name.index = -1; | 128 name.index = -1; |
152 put(name.name); | 129 put(name.name); |
153 } | 130 } |
154 } | 131 } |
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