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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| // Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file | ||
| // for details. All rights reserved. Use of this source code is governed by a | ||
| // BSD-style license that can be found in the LICENSE file. | ||
|
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| library vm.metadata.obfuscation_prohibitions; | ||
|
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| import 'package:kernel/ast.dart'; | ||
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| class ObfuscationProhibitionsMetadata { | ||
| final Set<String> protectedNames = Set<String>(); | ||
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| ObfuscationProhibitionsMetadata(); | ||
|
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| @override | ||
| String toString() => protectedNames.toString(); | ||
| } | ||
|
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| /// Repository for [ObfuscationProhibitionsMetadata]. | ||
| class ObfuscationProhibitionsMetadataRepository | ||
| extends MetadataRepository<ObfuscationProhibitionsMetadata> { | ||
| static final repositoryTag = 'vm.obfuscation-prohibitions.metadata'; | ||
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| @override | ||
| final String tag = repositoryTag; | ||
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| @override | ||
| final Map<TreeNode, ObfuscationProhibitionsMetadata> mapping = | ||
| <TreeNode, ObfuscationProhibitionsMetadata>{}; | ||
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| @override | ||
| void writeToBinary( | ||
| ObfuscationProhibitionsMetadata metadata, Node node, BinarySink sink) { | ||
| sink.writeUInt32(metadata.protectedNames.length); | ||
| for (String name in metadata.protectedNames) { | ||
| sink.writeStringReference(name); | ||
| } | ||
| } | ||
|
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| @override | ||
| ObfuscationProhibitionsMetadata readFromBinary( | ||
| Node node, BinarySource source) { | ||
| final metadata = ObfuscationProhibitionsMetadata(); | ||
| int length = source.readUint32(); | ||
| for (int i = 0; i < length; ++i) { | ||
| metadata.protectedNames.add(source.readStringReference()); | ||
| } | ||
| return metadata; | ||
| } | ||
| } |
61 changes: 61 additions & 0 deletions
61
pkg/vm/lib/transformations/obfuscation_prohibitions_annotator.dart
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| // Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file | ||
| // for details. All rights reserved. Use of this source code is governed by a | ||
| // BSD-style license that can be found in the LICENSE file. | ||
|
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| library vm.transformations.obfuscation_prohibitions_annotator; | ||
|
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| import 'package:kernel/ast.dart'; | ||
| import 'package:kernel/core_types.dart' show CoreTypes; | ||
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| import '../metadata/obfuscation_prohibitions.dart'; | ||
| import 'pragma.dart'; | ||
|
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| void transformComponent(Component component, CoreTypes coreTypes) { | ||
| final repo = new ObfuscationProhibitionsMetadataRepository(); | ||
| component.addMetadataRepository(repo); | ||
| final visitor = | ||
| ObfuscationProhibitionsVisitor(ConstantPragmaAnnotationParser(coreTypes)); | ||
| visitor.visitComponent(component); | ||
| repo.mapping[component] = visitor.metadata; | ||
| } | ||
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| class ObfuscationProhibitionsVisitor extends RecursiveVisitor { | ||
| final PragmaAnnotationParser parser; | ||
| final metadata = ObfuscationProhibitionsMetadata(); | ||
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| ObfuscationProhibitionsVisitor(this.parser); | ||
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| void _addIfEntryPoint( | ||
| List<Expression> annotations, String name, TreeNode node) { | ||
| for (var ann in annotations) { | ||
| ParsedPragma pragma = parser.parsePragma(ann); | ||
| if (pragma is ParsedEntryPointPragma) { | ||
| metadata.protectedNames.add(name); | ||
| if (node is Field) { | ||
| metadata.protectedNames.add(name + "="); | ||
| } | ||
| final parent = node.parent; | ||
| if (parent is Class) { | ||
| metadata.protectedNames.add(parent.name); | ||
| } | ||
| break; | ||
| } | ||
| } | ||
| } | ||
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| @override | ||
| visitClass(Class klass) { | ||
| _addIfEntryPoint(klass.annotations, klass.name, klass); | ||
| klass.visitChildren(this); | ||
| } | ||
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| @override | ||
| visitProcedure(Procedure proc) { | ||
| _addIfEntryPoint(proc.annotations, proc.name.name, proc); | ||
| } | ||
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| @override | ||
| visitField(Field field) { | ||
| _addIfEntryPoint(field.annotations, field.name.name, field); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| // Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file | ||
| // for details. All rights reserved. Use of this source code is governed by a | ||
| // BSD-style license that can be found in the LICENSE file. | ||
|
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| library vm.transformations.pragma; | ||
|
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| import 'package:kernel/ast.dart'; | ||
| import 'package:kernel/core_types.dart' show CoreTypes; | ||
|
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| const kEntryPointPragmaName = "vm:entry-point"; | ||
| const kExactResultTypePragmaName = "vm:exact-result-type"; | ||
|
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| abstract class ParsedPragma {} | ||
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| enum PragmaEntryPointType { Always, GetterOnly, SetterOnly } | ||
|
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| class ParsedEntryPointPragma extends ParsedPragma { | ||
| final PragmaEntryPointType type; | ||
| ParsedEntryPointPragma(this.type); | ||
| } | ||
|
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| class ParsedResultTypeByTypePragma extends ParsedPragma { | ||
| final DartType type; | ||
| ParsedResultTypeByTypePragma(this.type); | ||
| } | ||
|
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| class ParsedResultTypeByPathPragma extends ParsedPragma { | ||
| final String path; | ||
| ParsedResultTypeByPathPragma(this.path); | ||
| } | ||
|
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| abstract class PragmaAnnotationParser { | ||
| /// May return 'null' if the annotation does not represent a recognized | ||
| /// @pragma. | ||
| ParsedPragma parsePragma(Expression annotation); | ||
| } | ||
|
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| class ConstantPragmaAnnotationParser extends PragmaAnnotationParser { | ||
| final CoreTypes coreTypes; | ||
|
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| ConstantPragmaAnnotationParser(this.coreTypes); | ||
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| ParsedPragma parsePragma(Expression annotation) { | ||
| InstanceConstant pragmaConstant; | ||
| if (annotation is ConstantExpression) { | ||
| Constant constant = annotation.constant; | ||
| if (constant is InstanceConstant) { | ||
| if (constant.classReference.node == coreTypes.pragmaClass) { | ||
| pragmaConstant = constant; | ||
| } | ||
| } | ||
| } | ||
| if (pragmaConstant == null) return null; | ||
|
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| String pragmaName; | ||
| Constant name = pragmaConstant.fieldValues[coreTypes.pragmaName.reference]; | ||
| if (name is StringConstant) { | ||
| pragmaName = name.value; | ||
| } else { | ||
| return null; | ||
| } | ||
|
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| Constant options = | ||
| pragmaConstant.fieldValues[coreTypes.pragmaOptions.reference]; | ||
| assert(options != null); | ||
|
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| switch (pragmaName) { | ||
| case kEntryPointPragmaName: | ||
| PragmaEntryPointType type; | ||
| if (options is NullConstant) { | ||
| type = PragmaEntryPointType.Always; | ||
| } else if (options is BoolConstant && options.value == true) { | ||
| type = PragmaEntryPointType.Always; | ||
| } else if (options is StringConstant) { | ||
| if (options.value == "get") { | ||
| type = PragmaEntryPointType.GetterOnly; | ||
| } else if (options.value == "set") { | ||
| type = PragmaEntryPointType.SetterOnly; | ||
| } else { | ||
| throw "Error: string directive to @pragma('$kEntryPointPragmaName', ...) " | ||
| "must be either 'get' or 'set'."; | ||
| } | ||
| } | ||
| return type != null ? new ParsedEntryPointPragma(type) : null; | ||
| case kExactResultTypePragmaName: | ||
| if (options == null) return null; | ||
| if (options is TypeLiteralConstant) { | ||
| return new ParsedResultTypeByTypePragma(options.type); | ||
| } else if (options is StringConstant) { | ||
| return new ParsedResultTypeByPathPragma(options.value); | ||
| } | ||
| throw "ERROR: Unsupported option to '$kExactResultTypePragmaName' " | ||
| "pragma: $options"; | ||
| default: | ||
| return null; | ||
| } | ||
| } | ||
| } |
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