| // Copyright (c) 2017, 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. |
| |
| library js_backend.backend.annotations; |
| |
| import '../common_elements.dart' show KCommonElements, KElementEnvironment; |
| import '../constants/values.dart'; |
| import '../diagnostics/diagnostic_listener.dart'; |
| import '../diagnostics/messages.dart'; |
| import '../elements/entities.dart'; |
| import '../native/native.dart' as native; |
| import '../serialization/serialization.dart'; |
| |
| /// Returns `true` if parameter and returns types should be trusted for |
| /// [element]. |
| bool _trustTypeAnnotations(KElementEnvironment elementEnvironment, |
| KCommonElements commonElements, MemberEntity element) { |
| return _hasAnnotation(elementEnvironment, element, |
| commonElements.expectTrustTypeAnnotationsClass); |
| } |
| |
| /// Returns `true` if inference of parameter types is disabled for [element]. |
| bool _assumeDynamic(KElementEnvironment elementEnvironment, |
| KCommonElements commonElements, MemberEntity element) { |
| return _hasAnnotation( |
| elementEnvironment, element, commonElements.expectAssumeDynamicClass); |
| } |
| |
| /// Returns `true` if [element] is annotated with [annotationClass]. |
| bool _hasAnnotation(KElementEnvironment elementEnvironment, |
| MemberEntity element, ClassEntity annotationClass) { |
| if (annotationClass == null) return false; |
| for (ConstantValue value in elementEnvironment.getMemberMetadata(element)) { |
| if (value.isConstructedObject) { |
| ConstructedConstantValue constructedConstant = value; |
| if (constructedConstant.type.element == annotationClass) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| /// Process backend specific annotations. |
| // TODO(johnniwinther): Merge this with [AnnotationProcessor]. |
| AnnotationsData processAnnotations( |
| DiagnosticReporter reporter, |
| KCommonElements commonElements, |
| KElementEnvironment elementEnvironment, |
| Iterable<MemberEntity> processedMembers) { |
| AnnotationsDataBuilder annotationsDataBuilder = new AnnotationsDataBuilder(); |
| |
| void processMemberAnnotations(MemberEntity element) { |
| bool hasNoInline = false; |
| bool hasTryInline = false; |
| |
| if (_trustTypeAnnotations(elementEnvironment, commonElements, element)) { |
| annotationsDataBuilder.registerTrustTypeAnnotations(element); |
| } |
| |
| if (_assumeDynamic(elementEnvironment, commonElements, element)) { |
| annotationsDataBuilder.registerAssumeDynamic(element); |
| } |
| |
| // TODO(sra): Check for inappropriate annotations on fields. |
| if (element.isField) return; |
| |
| FunctionEntity method = element; |
| LibraryEntity library = element.library; |
| bool platformAnnotationsAllowed = library.canonicalUri.scheme == 'dart' || |
| native.maybeEnableNative(library.canonicalUri); |
| |
| bool hasNoThrows = false; |
| bool hasNoSideEffects = false; |
| |
| for (ConstantValue constantValue |
| in elementEnvironment.getMemberMetadata(method)) { |
| if (!constantValue.isConstructedObject) continue; |
| ConstructedConstantValue value = constantValue; |
| ClassEntity cls = value.type.element; |
| assert(cls != null); // Unresolved classes null. |
| |
| if (platformAnnotationsAllowed) { |
| if (cls == commonElements.forceInlineClass) { |
| hasTryInline = true; |
| } else if (cls == commonElements.noInlineClass) { |
| hasNoInline = true; |
| } else if (cls == commonElements.noThrowsClass) { |
| hasNoThrows = true; |
| bool isValid = true; |
| if (method.isTopLevel) { |
| isValid = true; |
| } else if (method.isStatic) { |
| isValid = true; |
| } else if (method is ConstructorEntity && |
| method.isFactoryConstructor) { |
| isValid = true; |
| } |
| if (!isValid) { |
| reporter.internalError( |
| method, |
| "@NoThrows() is currently limited to top-level" |
| " or static functions and factory constructors."); |
| } |
| annotationsDataBuilder.registerCannotThrow(method); |
| } else if (cls == commonElements.noSideEffectsClass) { |
| hasNoSideEffects = true; |
| annotationsDataBuilder.registerSideEffectsFree(method); |
| } |
| } |
| |
| if (cls == commonElements.expectNoInlineClass) { |
| hasNoInline = true; |
| } else if (cls == commonElements.metaNoInlineClass) { |
| hasNoInline = true; |
| } else if (cls == commonElements.metaTryInlineClass) { |
| hasTryInline = true; |
| } else if (cls == commonElements.pragmaClass) { |
| // Recognize: |
| // |
| // @pragma('dart2js:noInline') |
| // @pragma('dart2js:tryInline') |
| // |
| ConstantValue nameValue = |
| value.fields[commonElements.pragmaClassNameField]; |
| if (nameValue == null || !nameValue.isString) continue; |
| String name = (nameValue as StringConstantValue).stringValue; |
| if (!name.startsWith('dart2js:')) continue; |
| |
| ConstantValue optionsValue = |
| value.fields[commonElements.pragmaClassOptionsField]; |
| if (name == 'dart2js:noInline') { |
| if (!optionsValue.isNull) { |
| reporter.reportErrorMessage(element, MessageKind.GENERIC, |
| {'text': "@pragma('$name') annotation does not take options"}); |
| } |
| hasNoInline = true; |
| } else if (name == 'dart2js:tryInline') { |
| if (!optionsValue.isNull) { |
| reporter.reportErrorMessage(element, MessageKind.GENERIC, |
| {'text': "@pragma('$name') annotation does not take options"}); |
| } |
| hasTryInline = true; |
| } else if (!platformAnnotationsAllowed) { |
| reporter.reportErrorMessage(element, MessageKind.GENERIC, |
| {'text': "Unknown dart2js pragma @pragma('$name')"}); |
| } else { |
| // Handle platform-only `@pragma` annotations. |
| } |
| } |
| } |
| |
| if (hasTryInline && hasNoInline) { |
| reporter.reportErrorMessage(element, MessageKind.GENERIC, |
| {'text': '@tryInline must not be used with @noInline.'}); |
| hasTryInline = false; |
| } |
| if (hasNoInline) { |
| annotationsDataBuilder.markAsNonInlinable(method); |
| } |
| if (hasTryInline) { |
| annotationsDataBuilder.markAsTryInline(method); |
| } |
| if (hasNoThrows && !hasNoInline) { |
| reporter.internalError( |
| method, "@NoThrows() should always be combined with @noInline."); |
| } |
| if (hasNoSideEffects && !hasNoInline) { |
| reporter.internalError( |
| method, "@NoSideEffects() should always be combined with @noInline."); |
| } |
| } |
| |
| for (MemberEntity entity in processedMembers) { |
| processMemberAnnotations(entity); |
| } |
| |
| return annotationsDataBuilder; |
| } |
| |
| abstract class AnnotationsData { |
| /// Deserializes a [AnnotationsData] object from [source]. |
| factory AnnotationsData.readFromDataSource(DataSource source) = |
| AnnotationsDataImpl.readFromDataSource; |
| |
| /// Serializes this [AnnotationsData] to [sink]. |
| void writeToDataSink(DataSink sink); |
| |
| /// Functions with a `@NoInline()` or `@noInline` annotation. |
| Iterable<FunctionEntity> get nonInlinableFunctions; |
| |
| /// Functions with a `@ForceInline()` or `@tryInline` annotation. |
| Iterable<FunctionEntity> get tryInlineFunctions; |
| |
| /// Functions with a `@NoThrows()` annotation. |
| Iterable<FunctionEntity> get cannotThrowFunctions; |
| |
| /// Functions with a `@NoSideEffects()` annotation. |
| Iterable<FunctionEntity> get sideEffectFreeFunctions; |
| |
| /// Members with a `@TrustTypeAnnotations()` annotation. |
| Iterable<MemberEntity> get trustTypeAnnotationsMembers; |
| |
| /// Members with a `@AssumeDynamic()` annotation. |
| Iterable<MemberEntity> get assumeDynamicMembers; |
| } |
| |
| class AnnotationsDataImpl implements AnnotationsData { |
| /// Tag used for identifying serialized [AnnotationsData] objects in a |
| /// debugging data stream. |
| static const String tag = 'annotations-data'; |
| |
| final Iterable<FunctionEntity> nonInlinableFunctions; |
| final Iterable<FunctionEntity> tryInlineFunctions; |
| final Iterable<FunctionEntity> cannotThrowFunctions; |
| final Iterable<FunctionEntity> sideEffectFreeFunctions; |
| final Iterable<MemberEntity> trustTypeAnnotationsMembers; |
| final Iterable<MemberEntity> assumeDynamicMembers; |
| |
| AnnotationsDataImpl( |
| this.nonInlinableFunctions, |
| this.tryInlineFunctions, |
| this.cannotThrowFunctions, |
| this.sideEffectFreeFunctions, |
| this.trustTypeAnnotationsMembers, |
| this.assumeDynamicMembers); |
| |
| factory AnnotationsDataImpl.readFromDataSource(DataSource source) { |
| source.begin(tag); |
| Iterable<FunctionEntity> nonInlinableFunctions = source.readMembers(); |
| Iterable<FunctionEntity> tryInlineFunctions = source.readMembers(); |
| Iterable<FunctionEntity> cannotThrowFunctions = source.readMembers(); |
| Iterable<FunctionEntity> sideEffectFreeFunctions = source.readMembers(); |
| Iterable<MemberEntity> trustTypeAnnotationsMembers = source.readMembers(); |
| Iterable<MemberEntity> assumeDynamicMembers = source.readMembers(); |
| source.end(tag); |
| return new AnnotationsDataImpl( |
| nonInlinableFunctions, |
| tryInlineFunctions, |
| cannotThrowFunctions, |
| sideEffectFreeFunctions, |
| trustTypeAnnotationsMembers, |
| assumeDynamicMembers); |
| } |
| |
| void writeToDataSink(DataSink sink) { |
| sink.begin(tag); |
| sink.writeMembers(nonInlinableFunctions); |
| sink.writeMembers(tryInlineFunctions); |
| sink.writeMembers(cannotThrowFunctions); |
| sink.writeMembers(sideEffectFreeFunctions); |
| sink.writeMembers(trustTypeAnnotationsMembers); |
| sink.writeMembers(assumeDynamicMembers); |
| sink.end(tag); |
| } |
| } |
| |
| class AnnotationsDataBuilder implements AnnotationsData { |
| List<FunctionEntity> _nonInlinableFunctions = <FunctionEntity>[]; |
| List<FunctionEntity> _tryInlinableFunctions = <FunctionEntity>[]; |
| List<FunctionEntity> _cannotThrowFunctions = <FunctionEntity>[]; |
| List<FunctionEntity> _sideEffectFreeFunctions = <FunctionEntity>[]; |
| List<MemberEntity> _trustTypeAnnotationsMembers = <MemberEntity>[]; |
| List<MemberEntity> _assumeDynamicMembers = <MemberEntity>[]; |
| |
| void markAsNonInlinable(FunctionEntity function) { |
| _nonInlinableFunctions.add(function); |
| } |
| |
| void markAsTryInline(FunctionEntity function) { |
| _tryInlinableFunctions.add(function); |
| } |
| |
| void registerCannotThrow(FunctionEntity function) { |
| _cannotThrowFunctions.add(function); |
| } |
| |
| void registerSideEffectsFree(FunctionEntity function) { |
| _sideEffectFreeFunctions.add(function); |
| } |
| |
| void registerTrustTypeAnnotations(MemberEntity member) { |
| _trustTypeAnnotationsMembers.add(member); |
| } |
| |
| void registerAssumeDynamic(MemberEntity member) { |
| _assumeDynamicMembers.add(member); |
| } |
| |
| Iterable<FunctionEntity> get nonInlinableFunctions => _nonInlinableFunctions; |
| Iterable<FunctionEntity> get tryInlineFunctions => _tryInlinableFunctions; |
| Iterable<FunctionEntity> get cannotThrowFunctions => _cannotThrowFunctions; |
| Iterable<FunctionEntity> get sideEffectFreeFunctions => |
| _sideEffectFreeFunctions; |
| Iterable<MemberEntity> get trustTypeAnnotationsMembers => |
| _trustTypeAnnotationsMembers; |
| Iterable<MemberEntity> get assumeDynamicMembers => _assumeDynamicMembers; |
| |
| void writeToDataSink(DataSink sink) { |
| throw new UnsupportedError('AnnotationsDataBuilder.writeToDataSink'); |
| } |
| } |