| // Copyright (c) 2019, 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. |
| |
| import 'package:_fe_analyzer_shared/src/scanner/token.dart' show Token; |
| import 'package:kernel/ast.dart'; |
| import 'package:kernel/class_hierarchy.dart'; |
| import 'package:kernel/type_algebra.dart'; |
| import 'package:kernel/type_environment.dart'; |
| |
| import '../base/constant_context.dart' show ConstantContext; |
| import '../base/local_scope.dart'; |
| import '../base/messages.dart' |
| show |
| LocatedMessage, |
| Message, |
| messageMoreThanOneSuperInitializer, |
| messageRedirectingConstructorWithAnotherInitializer, |
| messageRedirectingConstructorWithMultipleRedirectInitializers, |
| messageRedirectingConstructorWithSuperInitializer, |
| messageSuperInitializerNotLast, |
| noLength; |
| import '../base/modifiers.dart'; |
| import '../base/scope.dart'; |
| import '../builder/builder.dart'; |
| import '../builder/constructor_builder.dart'; |
| import '../builder/declaration_builders.dart'; |
| import '../builder/formal_parameter_builder.dart'; |
| import '../builder/member_builder.dart'; |
| import '../builder/metadata_builder.dart'; |
| import '../builder/omitted_type_builder.dart'; |
| import '../builder/type_builder.dart'; |
| import '../kernel/body_builder.dart' show BodyBuilder; |
| import '../kernel/body_builder_context.dart'; |
| import '../kernel/constructor_tearoff_lowering.dart'; |
| import '../kernel/expression_generator_helper.dart'; |
| import '../kernel/hierarchy/class_member.dart' show ClassMember; |
| import '../kernel/internal_ast.dart'; |
| import '../kernel/kernel_helper.dart' |
| show |
| DelayedDefaultValueCloner, |
| TypeDependency, |
| finishConstructorAugmentation, |
| finishProcedureAugmentation; |
| import '../kernel/type_algorithms.dart'; |
| import '../type_inference/inference_results.dart'; |
| import '../type_inference/type_schema.dart'; |
| import 'constructor_declaration.dart'; |
| import 'name_scheme.dart'; |
| import 'source_class_builder.dart'; |
| import 'source_enum_builder.dart'; |
| import 'source_extension_type_declaration_builder.dart'; |
| import 'source_field_builder.dart'; |
| import 'source_function_builder.dart'; |
| import 'source_library_builder.dart' show SourceLibraryBuilder; |
| import 'source_loader.dart' |
| show CompilationPhaseForProblemReporting, SourceLoader; |
| import 'source_member_builder.dart'; |
| |
| abstract class SourceConstructorBuilder |
| implements ConstructorBuilder, SourceMemberBuilder { |
| @override |
| DeclarationBuilder get declarationBuilder; |
| |
| /// Infers the types of any untyped initializing formals. |
| void inferFormalTypes(ClassHierarchyBase hierarchy); |
| |
| void addSuperParameterDefaultValueCloners( |
| List<DelayedDefaultValueCloner> delayedDefaultValueCloners); |
| |
| /// Returns `true` if this constructor is an redirecting generative |
| /// constructor. |
| /// |
| /// It is considered redirecting if it has at least one redirecting |
| /// initializer. |
| bool get isRedirecting; |
| } |
| |
| abstract class AbstractSourceConstructorBuilder |
| extends SourceFunctionBuilderImpl |
| implements SourceConstructorBuilder, Inferable, ConstructorDeclaration { |
| @override |
| final OmittedTypeBuilder returnType; |
| |
| final int charOpenParenOffset; |
| |
| bool _hasFormalsInferred = false; |
| |
| Token? beginInitializers; |
| |
| AbstractSourceConstructorBuilder( |
| List<MetadataBuilder>? metadata, |
| Modifiers modifiers, |
| this.returnType, |
| String name, |
| List<NominalParameterBuilder>? typeParameters, |
| List<FormalParameterBuilder>? formals, |
| this.charOpenParenOffset, |
| String? nativeMethodName, |
| this.beginInitializers) |
| : super(metadata, modifiers, name, typeParameters, formals, |
| nativeMethodName) { |
| if (formals != null) { |
| for (FormalParameterBuilder formal in formals) { |
| if (formal.isInitializingFormal || formal.isSuperInitializingFormal) { |
| formal.type.registerInferable(this); |
| } |
| } |
| } |
| } |
| |
| @override |
| bool get isConstructor => true; |
| |
| @override |
| ProcedureKind? get kind => null; |
| |
| @override |
| Statement? get body { |
| if (bodyInternal == null && !isExternal) { |
| bodyInternal = new EmptyStatement(); |
| } |
| return bodyInternal; |
| } |
| |
| @override |
| AsyncMarker get asyncModifier => AsyncMarker.Sync; |
| |
| @override |
| void inferTypes(ClassHierarchyBase hierarchy) { |
| inferFormalTypes(hierarchy); |
| } |
| |
| @override |
| void inferFormalTypes(ClassHierarchyBase hierarchy) { |
| if (_hasFormalsInferred) return; |
| if (formals != null) { |
| libraryBuilder.loader.withUriForCrashReporting(fileUri, fileOffset, () { |
| for (FormalParameterBuilder formal in formals!) { |
| if (formal.type is InferableTypeBuilder) { |
| if (formal.isInitializingFormal) { |
| formal.finalizeInitializingFormal( |
| declarationBuilder, this, hierarchy); |
| } |
| } |
| } |
| _inferSuperInitializingFormals(hierarchy); |
| }); |
| } |
| _hasFormalsInferred = true; |
| } |
| |
| // Coverage-ignore(suite): Not run. |
| void _inferSuperInitializingFormals(ClassHierarchyBase hierarchy) {} |
| |
| void _buildFormals(Member member) { |
| if (formals != null) { |
| bool needsInference = false; |
| for (FormalParameterBuilder formal in formals!) { |
| if (formal.type is InferableTypeBuilder && |
| (formal.isInitializingFormal || formal.isSuperInitializingFormal)) { |
| formal.variable!.type = const UnknownType(); |
| needsInference = true; |
| } else if (!formal.hasDeclaredInitializer && |
| formal.isSuperInitializingFormal) { |
| needsInference = true; |
| } |
| } |
| if (needsInference) { |
| libraryBuilder.loader.registerConstructorToBeInferred(member, this); |
| } |
| } |
| } |
| |
| List<Initializer> get initializers; |
| |
| void _injectInvalidInitializer(Message message, int charOffset, int length, |
| ExpressionGeneratorHelper helper, TreeNode parent) { |
| Initializer lastInitializer = initializers.removeLast(); |
| assert(lastInitializer == superInitializer || |
| lastInitializer == redirectingInitializer); |
| Initializer error = helper.buildInvalidInitializer( |
| helper.buildProblem(message, charOffset, length)); |
| initializers.add(error..parent = parent); |
| initializers.add(lastInitializer); |
| } |
| |
| SuperInitializer? superInitializer; |
| |
| RedirectingInitializer? redirectingInitializer; |
| |
| @override |
| void addInitializer(Initializer initializer, ExpressionGeneratorHelper helper, |
| {required InitializerInferenceResult? inferenceResult, |
| required TreeNode parent}) { |
| if (initializer is SuperInitializer) { |
| if (superInitializer != null) { |
| _injectInvalidInitializer(messageMoreThanOneSuperInitializer, |
| initializer.fileOffset, "super".length, helper, parent); |
| } else if (redirectingInitializer != null) { |
| _injectInvalidInitializer( |
| messageRedirectingConstructorWithSuperInitializer, |
| initializer.fileOffset, |
| "super".length, |
| helper, |
| parent); |
| } else { |
| inferenceResult?.applyResult(initializers, parent); |
| superInitializer = initializer; |
| |
| LocatedMessage? message = helper.checkArgumentsForFunction( |
| initializer.target.function, |
| initializer.arguments, |
| initializer.arguments.fileOffset, <TypeParameter>[]); |
| if (message != null) { |
| initializers.add(helper.buildInvalidInitializer( |
| helper.buildUnresolvedError( |
| helper.constructorNameForDiagnostics( |
| initializer.target.name.text), |
| initializer.fileOffset, |
| arguments: initializer.arguments, |
| isSuper: true, |
| message: message, |
| kind: UnresolvedKind.Constructor)) |
| ..parent = parent); |
| } else { |
| initializers.add(initializer..parent = parent); |
| } |
| } |
| } else if (initializer is RedirectingInitializer) { |
| if (superInitializer != null) { |
| // Point to the existing super initializer. |
| _injectInvalidInitializer( |
| messageRedirectingConstructorWithSuperInitializer, |
| superInitializer!.fileOffset, |
| "super".length, |
| helper, |
| parent); |
| } else if (redirectingInitializer != null) { |
| _injectInvalidInitializer( |
| messageRedirectingConstructorWithMultipleRedirectInitializers, |
| initializer.fileOffset, |
| noLength, |
| helper, |
| parent); |
| } else if (initializers.isNotEmpty) { |
| // Error on all previous ones. |
| for (int i = 0; i < initializers.length; i++) { |
| Initializer initializer = initializers[i]; |
| int length = noLength; |
| if (initializer is AssertInitializer) length = "assert".length; |
| Initializer error = helper.buildInvalidInitializer( |
| helper.buildProblem( |
| messageRedirectingConstructorWithAnotherInitializer, |
| initializer.fileOffset, |
| length)); |
| error.parent = parent; |
| initializers[i] = error; |
| } |
| inferenceResult?.applyResult(initializers, parent); |
| initializers.add(initializer..parent = parent); |
| redirectingInitializer = initializer; |
| } else { |
| inferenceResult?.applyResult(initializers, parent); |
| redirectingInitializer = initializer; |
| |
| LocatedMessage? message = helper.checkArgumentsForFunction( |
| initializer.target.function, |
| initializer.arguments, |
| initializer.arguments.fileOffset, const <TypeParameter>[]); |
| if (message != null) { |
| initializers.add(helper.buildInvalidInitializer( |
| helper.buildUnresolvedError( |
| helper.constructorNameForDiagnostics( |
| initializer.target.name.text), |
| initializer.fileOffset, |
| arguments: initializer.arguments, |
| isSuper: false, |
| message: message, |
| kind: UnresolvedKind.Constructor)) |
| ..parent = parent); |
| } else { |
| initializers.add(initializer..parent = parent); |
| } |
| } |
| } else if (redirectingInitializer != null) { |
| int length = noLength; |
| if (initializer is AssertInitializer) length = "assert".length; |
| _injectInvalidInitializer( |
| messageRedirectingConstructorWithAnotherInitializer, |
| initializer.fileOffset, |
| length, |
| helper, |
| parent); |
| } else if (superInitializer != null) { |
| _injectInvalidInitializer(messageSuperInitializerNotLast, |
| initializer.fileOffset, noLength, helper, parent); |
| } else { |
| inferenceResult?.applyResult(initializers, parent); |
| initializers.add(initializer..parent = parent); |
| } |
| } |
| |
| void _buildConstructorForOutline( |
| Token? beginInitializers, LookupScope declarationScope) { |
| if (beginInitializers != null) { |
| final LocalScope? formalParameterScope; |
| if (isConst) { |
| // We're going to fully build the constructor so we need scopes. |
| formalParameterScope = computeFormalParameterInitializerScope( |
| computeFormalParameterScope( |
| computeTypeParameterScope(declarationBuilder.scope))); |
| } else { |
| formalParameterScope = null; |
| } |
| BodyBuilder bodyBuilder = libraryBuilder.loader |
| .createBodyBuilderForOutlineExpression( |
| libraryBuilder, |
| createBodyBuilderContext( |
| inOutlineBuildingPhase: true, |
| inMetadata: false, |
| inConstFields: false), |
| declarationScope, |
| fileUri, |
| formalParameterScope: formalParameterScope); |
| if (isConst) { |
| bodyBuilder.constantContext = ConstantContext.required; |
| } |
| inferFormalTypes(bodyBuilder.hierarchy); |
| bodyBuilder.parseInitializers(beginInitializers, |
| doFinishConstructor: isConst); |
| bodyBuilder.performBacklogComputations(); |
| } |
| } |
| |
| Procedure? get _constructorTearOff; |
| |
| @override |
| VariableDeclaration? getTearOffParameter(int index) { |
| Procedure? constructorTearOff = _constructorTearOff; |
| if (constructorTearOff != null) { |
| if (index < constructorTearOff.function.positionalParameters.length) { |
| return constructorTearOff.function.positionalParameters[index]; |
| } else { |
| index -= constructorTearOff.function.positionalParameters.length; |
| if (index < constructorTearOff.function.namedParameters.length) { |
| return constructorTearOff.function.namedParameters[index]; |
| } |
| } |
| } |
| return null; |
| } |
| |
| @override |
| int computeDefaultTypes(ComputeDefaultTypeContext context, |
| {required bool inErrorRecovery}) { |
| int count = context.computeDefaultTypesForVariables(typeParameters, |
| // Type parameters are inherited from the enclosing declaration, so if |
| // it has issues, so do the constructors. |
| inErrorRecovery: inErrorRecovery); |
| context.reportGenericFunctionTypesForFormals(formals); |
| return count; |
| } |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| void checkVariance( |
| SourceClassBuilder sourceClassBuilder, TypeEnvironment typeEnvironment) {} |
| |
| @override |
| void checkTypes( |
| SourceLibraryBuilder library, TypeEnvironment typeEnvironment) { |
| library.checkTypesInConstructorBuilder(this, formals, typeEnvironment); |
| } |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| List<ClassMember> get localMembers => |
| throw new UnsupportedError('${runtimeType}.localMembers'); |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| List<ClassMember> get localSetters => |
| throw new UnsupportedError('${runtimeType}.localSetters'); |
| } |
| |
| class DeclaredSourceConstructorBuilder |
| extends AbstractSourceConstructorBuilder { |
| late final Constructor _constructor; |
| |
| @override |
| late final Procedure? _constructorTearOff; |
| |
| Set<SourceFieldBuilder>? _initializedFields; |
| |
| DeclaredSourceConstructorBuilder? actualOrigin; |
| |
| List<DeclaredSourceConstructorBuilder>? _augmentations; |
| |
| bool _hasDefaultValueCloner = false; |
| |
| @override |
| List<FormalParameterBuilder>? formals; |
| |
| final MemberName _memberName; |
| |
| @override |
| String get fullNameForErrors { |
| return "${declarationBuilder.name}" |
| "${name.isEmpty ? '' : '.$name'}"; |
| } |
| |
| @override |
| final int fileOffset; |
| |
| @override |
| final Uri fileUri; |
| |
| @override |
| final SourceLibraryBuilder libraryBuilder; |
| |
| @override |
| final DeclarationBuilder declarationBuilder; |
| |
| DeclaredSourceConstructorBuilder( |
| {required List<MetadataBuilder>? metadata, |
| required Modifiers modifiers, |
| required OmittedTypeBuilder returnType, |
| required String name, |
| required List<NominalParameterBuilder>? typeParameters, |
| required this.formals, |
| required this.libraryBuilder, |
| required this.declarationBuilder, |
| required this.fileUri, |
| required int startOffset, |
| required this.fileOffset, |
| required int formalsOffset, |
| required int endOffset, |
| required Reference? constructorReference, |
| required Reference? tearOffReference, |
| required NameScheme nameScheme, |
| String? nativeMethodName, |
| required bool forAbstractClassOrEnumOrMixin, |
| required Token? beginInitializers, |
| bool isSynthetic = false}) |
| : _hasSuperInitializingFormals = |
| formals?.any((formal) => formal.isSuperInitializingFormal) ?? false, |
| _memberName = nameScheme.getDeclaredName(name), |
| super(metadata, modifiers, returnType, name, typeParameters, formals, |
| formalsOffset, nativeMethodName, beginInitializers) { |
| _constructor = new Constructor(new FunctionNode(null), |
| name: dummyName, |
| fileUri: fileUri, |
| reference: constructorReference, |
| isSynthetic: isSynthetic) |
| ..startFileOffset = startOffset |
| ..fileOffset = fileOffset |
| ..fileEndOffset = endOffset; |
| nameScheme |
| .getConstructorMemberName(name, isTearOff: false) |
| .attachMember(_constructor); |
| _constructorTearOff = createConstructorTearOffProcedure( |
| nameScheme.getConstructorMemberName(name, isTearOff: true), |
| libraryBuilder, |
| fileUri, |
| fileOffset, |
| tearOffReference, |
| forAbstractClassOrEnumOrMixin: forAbstractClassOrEnumOrMixin); |
| } |
| |
| @override |
| Builder get parent => declarationBuilder; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| Name get memberName => _memberName.name; |
| |
| @override |
| SourceClassBuilder get classBuilder => |
| super.classBuilder as SourceClassBuilder; |
| |
| @override |
| Member get readTarget => |
| _constructorTearOff ?? |
| // The case is need to ensure that the upper bound is [Member] and not |
| // [GenericFunction]. |
| // ignore: unnecessary_cast |
| _constructor as Member; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| Member? get writeTarget => null; |
| |
| @override |
| Member get invokeTarget => constructor; |
| |
| @override |
| FunctionNode get function => _constructor.function; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| Iterable<Member> get exportedMembers => [constructor]; |
| |
| @override |
| List<Initializer> get initializers => _constructor.initializers; |
| |
| @override |
| DeclaredSourceConstructorBuilder get origin => actualOrigin ?? this; |
| |
| // Coverage-ignore(suite): Not run. |
| List<SourceConstructorBuilder>? get augmentationsForTesting => _augmentations; |
| |
| @override |
| bool get isDeclarationInstanceMember => false; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| bool get isClassInstanceMember => false; |
| |
| @override |
| bool get isEffectivelyExternal { |
| bool isExternal = this.isExternal; |
| if (isExternal) { |
| List<SourceConstructorBuilder>? augmentations = _augmentations; |
| if (augmentations != null) { |
| for (SourceConstructorBuilder augmentation in augmentations) { |
| isExternal &= augmentation.isExternal; |
| } |
| } |
| } |
| return isExternal; |
| } |
| |
| @override |
| bool get isRedirecting { |
| for (Initializer initializer in initializers) { |
| if (initializer is RedirectingInitializer) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @override |
| bool get isEffectivelyRedirecting { |
| bool isRedirecting = this.isRedirecting; |
| if (!isRedirecting) { |
| List<SourceConstructorBuilder>? augmentations = _augmentations; |
| if (augmentations != null) { |
| for (SourceConstructorBuilder augmentation in augmentations) { |
| isRedirecting |= augmentation.isRedirecting; |
| } |
| } |
| } |
| return isRedirecting; |
| } |
| |
| @override |
| void buildOutlineNodes(BuildNodesCallback f) { |
| _build(); |
| f( |
| member: _constructor, |
| tearOff: _constructorTearOff, |
| kind: BuiltMemberKind.Constructor); |
| } |
| |
| bool _hasBeenBuilt = false; |
| |
| void _build() { |
| if (!_hasBeenBuilt) { |
| buildFunction(); |
| _constructor.function.fileOffset = charOpenParenOffset; |
| _constructor.function.fileEndOffset = _constructor.fileEndOffset; |
| _constructor.function.typeParameters = const <TypeParameter>[]; |
| _constructor.isConst = isConst; |
| _constructor.isExternal = isExternal; |
| |
| if (_constructorTearOff != null) { |
| DelayedDefaultValueCloner delayedDefaultValueCloners = |
| buildConstructorTearOffProcedure( |
| tearOff: _constructorTearOff, |
| declarationConstructor: constructor, |
| implementationConstructor: _constructor, |
| enclosingDeclarationTypeParameters: |
| classBuilder.cls.typeParameters, |
| libraryBuilder: libraryBuilder); |
| _delayedDefaultValueCloners.add(delayedDefaultValueCloners); |
| } |
| |
| _hasBeenBuilt = true; |
| } |
| _buildFormals(_constructor); |
| } |
| |
| @override |
| VariableDeclaration getFormalParameter(int index) { |
| if (parent is SourceEnumBuilder) { |
| return formals![index + 2].variable!; |
| } else { |
| return super.getFormalParameter(index); |
| } |
| } |
| |
| ConstructorBuilder? _computeSuperTargetBuilder( |
| List<Initializer>? initializers) { |
| Member superTarget; |
| ClassBuilder superclassBuilder; |
| |
| TypeBuilder? supertype = classBuilder.supertypeBuilder; |
| TypeDeclarationBuilder? supertypeDeclaration = |
| supertype?.computeUnaliasedDeclaration(isUsedAsClass: false); |
| if (supertypeDeclaration is ClassBuilder) { |
| superclassBuilder = supertypeDeclaration; |
| } else { |
| assert(libraryBuilder.loader.assertProblemReportedElsewhere( |
| "DeclaredSourceConstructorBuilder._computeSuperTargetBuilder: " |
| "Unaliased 'declaration' isn't a ClassBuilder.", |
| expectedPhase: CompilationPhaseForProblemReporting.outline)); |
| return null; |
| } |
| |
| if (initializers != null && |
| initializers.isNotEmpty && |
| initializers.last is SuperInitializer) { |
| superTarget = (initializers.last as SuperInitializer).target; |
| } else { |
| MemberBuilder? memberBuilder = superclassBuilder.constructorScope |
| .lookup("", fileOffset, libraryBuilder.fileUri); |
| if (memberBuilder is ConstructorBuilder) { |
| superTarget = memberBuilder.invokeTarget; |
| } else { |
| assert(libraryBuilder.loader.assertProblemReportedElsewhere( |
| "DeclaredSourceConstructorBuilder._computeSuperTargetBuilder: " |
| "Can't find the implied unnamed constructor in the superclass.", |
| expectedPhase: CompilationPhaseForProblemReporting.bodyBuilding)); |
| return null; |
| } |
| } |
| |
| MemberBuilder? constructorBuilder = |
| superclassBuilder.findConstructorOrFactory(superTarget.name.text, |
| fileOffset, libraryBuilder.fileUri, libraryBuilder); |
| if (constructorBuilder is ConstructorBuilder) { |
| return constructorBuilder; |
| } else { |
| // Coverage-ignore-block(suite): Not run. |
| assert(libraryBuilder.loader.assertProblemReportedElsewhere( |
| "DeclaredSourceConstructorBuilder._computeSuperTargetBuilder: " |
| "Can't find a constructor with name '${superTarget.name.text}' in " |
| "the superclass.", |
| expectedPhase: CompilationPhaseForProblemReporting.outline)); |
| return null; |
| } |
| } |
| |
| final bool _hasSuperInitializingFormals; |
| |
| final List<DelayedDefaultValueCloner> _delayedDefaultValueCloners = |
| <DelayedDefaultValueCloner>[]; |
| |
| @override |
| void _inferSuperInitializingFormals(ClassHierarchyBase hierarchy) { |
| if (_hasSuperInitializingFormals) { |
| List<Initializer>? initializers; |
| if (beginInitializers != null) { |
| BodyBuilder bodyBuilder = libraryBuilder.loader |
| .createBodyBuilderForOutlineExpression( |
| libraryBuilder, |
| createBodyBuilderContext( |
| inOutlineBuildingPhase: false, |
| inMetadata: false, |
| inConstFields: false), |
| declarationBuilder.scope, |
| fileUri); |
| if (isConst) { |
| bodyBuilder.constantContext = ConstantContext.required; |
| } |
| initializers = bodyBuilder.parseInitializers(beginInitializers!, |
| doFinishConstructor: false); |
| } |
| finalizeSuperInitializingFormals( |
| hierarchy, _delayedDefaultValueCloners, initializers); |
| } |
| } |
| |
| void finalizeSuperInitializingFormals( |
| ClassHierarchyBase hierarchy, |
| List<DelayedDefaultValueCloner> delayedDefaultValueCloners, |
| List<Initializer>? initializers) { |
| if (formals == null) return; |
| if (!_hasSuperInitializingFormals) return; |
| |
| void performRecoveryForErroneousCase() { |
| for (FormalParameterBuilder formal in formals!) { |
| if (formal.isSuperInitializingFormal) { |
| TypeBuilder type = formal.type; |
| if (type is InferableTypeBuilder) { |
| type.registerInferredType(const InvalidType()); |
| } |
| } |
| } |
| } |
| |
| ConstructorBuilder? superTargetBuilder = |
| _computeSuperTargetBuilder(initializers); |
| |
| if (superTargetBuilder is SourceConstructorBuilder) { |
| superTargetBuilder.inferFormalTypes(hierarchy); |
| } |
| |
| Member superTarget; |
| FunctionNode? superConstructorFunction; |
| if (superTargetBuilder != null) { |
| superTarget = superTargetBuilder.invokeTarget; |
| superConstructorFunction = superTargetBuilder.function; |
| } else { |
| assert(libraryBuilder.loader.assertProblemReportedElsewhere( |
| "DeclaredSourceConstructorBuilder.finalizeSuperInitializingFormals: " |
| "Can't compute super target.", |
| expectedPhase: CompilationPhaseForProblemReporting.bodyBuilding)); |
| // Perform a simple recovery. |
| return performRecoveryForErroneousCase(); |
| } |
| |
| List<DartType?> positionalSuperFormalType = []; |
| List<bool> positionalSuperFormalHasInitializer = []; |
| Map<String, DartType?> namedSuperFormalType = {}; |
| Map<String, bool> namedSuperFormalHasInitializer = {}; |
| |
| for (VariableDeclaration formal |
| in superConstructorFunction.positionalParameters) { |
| positionalSuperFormalType.add(formal.type); |
| positionalSuperFormalHasInitializer.add(formal.hasDeclaredInitializer); |
| } |
| for (VariableDeclaration formal |
| in superConstructorFunction.namedParameters) { |
| namedSuperFormalType[formal.name!] = formal.type; |
| namedSuperFormalHasInitializer[formal.name!] = |
| formal.hasDeclaredInitializer; |
| } |
| |
| int superInitializingFormalIndex = -1; |
| List<int?>? positionalSuperParameters; |
| List<String>? namedSuperParameters; |
| |
| Supertype? supertype = hierarchy.getClassAsInstanceOf( |
| classBuilder.cls, superTarget.enclosingClass!); |
| assert(supertype != null); |
| Map<TypeParameter, DartType> substitution = |
| new Map<TypeParameter, DartType>.fromIterables( |
| supertype!.classNode.typeParameters, supertype.typeArguments); |
| |
| for (int formalIndex = 0; formalIndex < formals!.length; formalIndex++) { |
| FormalParameterBuilder formal = formals![formalIndex]; |
| if (formal.isSuperInitializingFormal) { |
| superInitializingFormalIndex++; |
| bool hasImmediatelyDeclaredInitializer = |
| formal.hasImmediatelyDeclaredInitializer; |
| |
| DartType? correspondingSuperFormalType; |
| if (formal.isPositional) { |
| assert(positionalSuperFormalHasInitializer.length == |
| positionalSuperFormalType.length); |
| if (superInitializingFormalIndex < |
| positionalSuperFormalHasInitializer.length) { |
| if (formal.isOptional) { |
| formal.hasDeclaredInitializer = |
| hasImmediatelyDeclaredInitializer || |
| positionalSuperFormalHasInitializer[ |
| superInitializingFormalIndex]; |
| } |
| correspondingSuperFormalType = |
| positionalSuperFormalType[superInitializingFormalIndex]; |
| if (!hasImmediatelyDeclaredInitializer && |
| !formal.isRequiredPositional) { |
| (positionalSuperParameters ??= <int?>[]).add(formalIndex); |
| } else { |
| (positionalSuperParameters ??= <int?>[]).add(null); |
| } |
| } else { |
| assert(libraryBuilder.loader.assertProblemReportedElsewhere( |
| "DeclaredSourceConstructorBuilder" |
| ".finalizeSuperInitializingFormals: " |
| "Super initializer count is greater than the count of " |
| "positional formals in the super constructor.", |
| expectedPhase: |
| CompilationPhaseForProblemReporting.bodyBuilding)); |
| } |
| } else { |
| if (namedSuperFormalHasInitializer[formal.name] != null) { |
| if (formal.isOptional) { |
| formal.hasDeclaredInitializer = |
| hasImmediatelyDeclaredInitializer || |
| namedSuperFormalHasInitializer[formal.name]!; |
| } |
| correspondingSuperFormalType = namedSuperFormalType[formal.name]; |
| if (!hasImmediatelyDeclaredInitializer && !formal.isRequiredNamed) { |
| (namedSuperParameters ??= <String>[]).add(formal.name); |
| } |
| } else { |
| // TODO(cstefantsova): Report an error. |
| } |
| } |
| |
| if (formal.type is InferableTypeBuilder) { |
| DartType? type = correspondingSuperFormalType; |
| if (substitution.isNotEmpty && type != null) { |
| type = substitute(type, substitution); |
| } |
| formal.type.registerInferredType(type ?? const DynamicType()); |
| } |
| formal.variable!.hasDeclaredInitializer = formal.hasDeclaredInitializer; |
| } |
| } |
| |
| if (positionalSuperParameters != null || namedSuperParameters != null) { |
| if (!_hasDefaultValueCloner) { |
| // If this constructor formals are part of a cyclic dependency this |
| // might be called more than once. |
| delayedDefaultValueCloners.add(new DelayedDefaultValueCloner( |
| superTarget, constructor, |
| positionalSuperParameters: |
| positionalSuperParameters ?? const <int>[], |
| namedSuperParameters: namedSuperParameters ?? const <String>[], |
| isOutlineNode: true, |
| libraryBuilder: libraryBuilder)); |
| if (_constructorTearOff != null) { |
| delayedDefaultValueCloners.add(new DelayedDefaultValueCloner( |
| superTarget, _constructorTearOff, |
| positionalSuperParameters: |
| positionalSuperParameters ?? const <int>[], |
| namedSuperParameters: namedSuperParameters ?? const <String>[], |
| isOutlineNode: true, |
| libraryBuilder: libraryBuilder)); |
| } |
| _hasDefaultValueCloner = true; |
| } |
| } |
| } |
| |
| bool _hasBuiltOutlines = false; |
| |
| @override |
| void buildOutlineExpressions(ClassHierarchy classHierarchy, |
| List<DelayedDefaultValueCloner> delayedDefaultValueCloners) { |
| if (_hasBuiltOutlines) return; |
| if (isConst && isAugmenting) { |
| origin.buildOutlineExpressions( |
| classHierarchy, delayedDefaultValueCloners); |
| } |
| super.buildOutlineExpressions(classHierarchy, delayedDefaultValueCloners); |
| |
| // For modular compilation purposes we need to include initializers |
| // for const constructors into the outline. We also need to parse |
| // initializers to infer types of the super-initializing parameters. |
| if (isConst || _hasSuperInitializingFormals) { |
| _buildConstructorForOutline(beginInitializers, classBuilder.scope); |
| } |
| addSuperParameterDefaultValueCloners(delayedDefaultValueCloners); |
| if (isConst && isAugmenting) { |
| _finishAugmentation(); |
| } |
| beginInitializers = null; |
| _hasBuiltOutlines = true; |
| } |
| |
| @override |
| void addSuperParameterDefaultValueCloners( |
| List<DelayedDefaultValueCloner> delayedDefaultValueCloners) { |
| if (beginInitializers != null && constructor.initializers.isNotEmpty) { |
| // If the initializers aren't built yet, we can't compute the super |
| // target. The synthetic initializers should be excluded, since they can |
| // be built separately from formal field initializers. |
| bool allInitializersAreSynthetic = true; |
| for (Initializer initializer in constructor.initializers) { |
| if (!initializer.isSynthetic) { |
| allInitializersAreSynthetic = false; |
| break; |
| } |
| } |
| if (!allInitializersAreSynthetic) { |
| ConstructorBuilder? superTargetBuilder = |
| _computeSuperTargetBuilder(constructor.initializers); |
| if (superTargetBuilder is SourceConstructorBuilder) { |
| superTargetBuilder |
| .addSuperParameterDefaultValueCloners(delayedDefaultValueCloners); |
| } |
| } |
| } |
| |
| delayedDefaultValueCloners.addAll(_delayedDefaultValueCloners); |
| _delayedDefaultValueCloners.clear(); |
| } |
| |
| @override |
| void buildFunction() { |
| // According to the specification §9.3 the return type of a constructor |
| // function is its enclosing class. |
| super.buildFunction(); |
| Class enclosingClass = classBuilder.cls; |
| List<DartType> typeParameterTypes = <DartType>[]; |
| for (int i = 0; i < enclosingClass.typeParameters.length; i++) { |
| TypeParameter typeParameter = enclosingClass.typeParameters[i]; |
| typeParameterTypes.add( |
| new TypeParameterType.withDefaultNullabilityForLibrary( |
| typeParameter, libraryBuilder.library)); |
| } |
| InterfaceType type = new InterfaceType( |
| enclosingClass, Nullability.nonNullable, typeParameterTypes); |
| returnType.registerInferredType(type); |
| } |
| |
| Constructor get constructor => |
| isAugmenting ? origin.constructor : _constructor; |
| |
| void _finishAugmentation() { |
| finishConstructorAugmentation(origin.constructor, _constructor); |
| |
| if (_constructorTearOff != null) { |
| finishProcedureAugmentation( |
| origin._constructorTearOff!, _constructorTearOff); |
| } |
| } |
| |
| @override |
| int buildBodyNodes(BuildNodesCallback f) { |
| if (!isAugmenting) return 0; |
| _finishAugmentation(); |
| return 1; |
| } |
| |
| @override |
| void becomeNative(SourceLoader loader) { |
| _constructor.isExternal = true; |
| super.becomeNative(loader); |
| } |
| |
| @override |
| void applyAugmentation(Builder augmentation) { |
| if (augmentation is DeclaredSourceConstructorBuilder) { |
| if (checkAugmentation(augmentation)) { |
| augmentation.actualOrigin = this; |
| (_augmentations ??= []).add(augmentation); |
| } |
| } else { |
| // Coverage-ignore-block(suite): Not run. |
| reportAugmentationMismatch(augmentation); |
| } |
| } |
| |
| @override |
| void prepareInitializers() { |
| // For const constructors we parse initializers already at the outlining |
| // stage, there is no easy way to make body building stage skip initializer |
| // parsing, so we simply clear parsed initializers and rebuild them |
| // again. |
| // For when doing an experimental incremental compilation they are also |
| // potentially done more than once (because it rebuilds the bodies of an old |
| // compile), and so we also clear them. |
| // Note: this method clears both initializers from the target Kernel node |
| // and internal state associated with parsing initializers. |
| _constructor.initializers = []; |
| redirectingInitializer = null; |
| superInitializer = null; |
| } |
| |
| @override |
| void prependInitializer(Initializer initializer) { |
| initializer.parent = constructor; |
| constructor.initializers.insert(0, initializer); |
| } |
| |
| @override |
| void registerInitializedField(SourceFieldBuilder fieldBuilder) { |
| if (isAugmenting) { |
| origin.registerInitializedField(fieldBuilder); |
| } else { |
| (_initializedFields ??= {}).add(fieldBuilder); |
| } |
| } |
| |
| @override |
| Set<SourceFieldBuilder>? takeInitializedFields() { |
| Set<SourceFieldBuilder>? result = _initializedFields; |
| _initializedFields = null; |
| return result; |
| } |
| |
| void ensureGrowableFormals() { |
| if (formals != null) { |
| formals = new List<FormalParameterBuilder>.of(formals!, growable: true); |
| } else { |
| formals = <FormalParameterBuilder>[]; |
| } |
| } |
| |
| @override |
| void checkTypes( |
| SourceLibraryBuilder library, TypeEnvironment typeEnvironment) { |
| super.checkTypes(library, typeEnvironment); |
| List<DeclaredSourceConstructorBuilder>? augmentations = _augmentations; |
| if (augmentations != null) { |
| for (DeclaredSourceConstructorBuilder augmentation in augmentations) { |
| augmentation.checkTypes(library, typeEnvironment); |
| } |
| } |
| } |
| |
| @override |
| DartType substituteFieldType(DartType fieldType) { |
| // Nothing to do. Regular generative constructors don't have their own |
| // type parameters. |
| return fieldType; |
| } |
| |
| @override |
| BodyBuilderContext createBodyBuilderContext( |
| {required bool inOutlineBuildingPhase, |
| required bool inMetadata, |
| required bool inConstFields}) { |
| return new ConstructorBodyBuilderContext(this, constructor, |
| inOutlineBuildingPhase: inOutlineBuildingPhase, |
| inMetadata: inMetadata, |
| inConstFields: inConstFields); |
| } |
| |
| // TODO(johnniwinther): Add annotations to tear-offs. |
| @override |
| Iterable<Annotatable> get annotatables => [constructor]; |
| |
| @override |
| bool get isAugmented { |
| if (isAugmenting) { |
| return origin._augmentations!.last != this; |
| } else { |
| return _augmentations != null; |
| } |
| } |
| } |
| |
| class SyntheticSourceConstructorBuilder extends MemberBuilderImpl |
| with SourceMemberBuilderMixin |
| implements SourceConstructorBuilder { |
| @override |
| final SourceLibraryBuilder libraryBuilder; |
| |
| @override |
| final SourceClassBuilder classBuilder; |
| |
| final Constructor _constructor; |
| final Procedure? _constructorTearOff; |
| |
| /// The constructor from which this synthesized constructor is defined. |
| /// |
| /// This defines the parameter structure and the default values of this |
| /// constructor. |
| /// |
| /// The [_immediatelyDefiningConstructor] might itself a synthesized |
| /// constructor and [_effectivelyDefiningConstructor] can be used to find |
| /// the constructor that effectively defines this constructor. |
| MemberBuilder? _immediatelyDefiningConstructor; |
| DelayedDefaultValueCloner? _delayedDefaultValueCloner; |
| TypeDependency? _typeDependency; |
| |
| SyntheticSourceConstructorBuilder(this.libraryBuilder, this.classBuilder, |
| Constructor constructor, Procedure? constructorTearOff, |
| {MemberBuilder? definingConstructor, |
| DelayedDefaultValueCloner? delayedDefaultValueCloner, |
| TypeDependency? typeDependency}) |
| : _immediatelyDefiningConstructor = definingConstructor, |
| _delayedDefaultValueCloner = delayedDefaultValueCloner, |
| _typeDependency = typeDependency, |
| _constructor = constructor, |
| _constructorTearOff = constructorTearOff; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| Iterable<MetadataBuilder>? get metadataForTesting => null; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| int get fileOffset => _constructor.fileOffset; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| Uri get fileUri => _constructor.fileUri; |
| |
| @override |
| Builder get parent => declarationBuilder; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| Iterable<Member> get exportedMembers => [_constructor]; |
| |
| @override |
| String get name => _constructor.name.text; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| Name get memberName => _constructor.name; |
| |
| @override |
| bool get isConstructor => true; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| ProcedureKind? get kind => null; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| bool get isAbstract => false; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| bool get isExternal => _constructor.isExternal; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| bool get isSynthetic => _constructor.isSynthetic; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| bool get isAssignable => false; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| List<ClassMember> get localMembers => |
| throw new UnsupportedError('${runtimeType}.localMembers'); |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| List<ClassMember> get localSetters => |
| throw new UnsupportedError('${runtimeType}.localSetters'); |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| Iterable<Annotatable> get annotatables => [_constructor]; |
| |
| @override |
| FunctionNode get function => _constructor.function; |
| |
| @override |
| Member get readTarget => _constructorTearOff ?? _constructor; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| Member? get writeTarget => null; |
| |
| @override |
| Constructor get invokeTarget => _constructor; |
| |
| @override |
| bool get isConst => _constructor.isConst; |
| |
| @override |
| DeclarationBuilder get declarationBuilder => classBuilder; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| bool get isRedirecting { |
| for (Initializer initializer in _constructor.initializers) { |
| if (initializer is RedirectingInitializer) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @override |
| void inferFormalTypes(ClassHierarchyBase hierarchy) { |
| if (_immediatelyDefiningConstructor is SourceConstructorBuilder) { |
| (_immediatelyDefiningConstructor as SourceConstructorBuilder) |
| .inferFormalTypes(hierarchy); |
| } |
| if (_typeDependency != null) { |
| _typeDependency!.copyInferred(); |
| _typeDependency = null; |
| } |
| } |
| |
| @override |
| void buildOutlineExpressions(ClassHierarchy classHierarchy, |
| List<DelayedDefaultValueCloner> delayedDefaultValueCloners) { |
| if (_immediatelyDefiningConstructor != null) { |
| // Ensure that default value expressions have been created for [_origin]. |
| // If [_origin] is from a source library, we need to build the default |
| // values and initializers first. |
| MemberBuilder origin = _immediatelyDefiningConstructor!; |
| if (origin is SourceConstructorBuilder) { |
| origin.buildOutlineExpressions( |
| classHierarchy, delayedDefaultValueCloners); |
| } |
| addSuperParameterDefaultValueCloners(delayedDefaultValueCloners); |
| _immediatelyDefiningConstructor = null; |
| } |
| } |
| |
| @override |
| void addSuperParameterDefaultValueCloners( |
| List<DelayedDefaultValueCloner> delayedDefaultValueCloners) { |
| MemberBuilder? origin = _immediatelyDefiningConstructor; |
| if (origin is SourceConstructorBuilder) { |
| origin.addSuperParameterDefaultValueCloners(delayedDefaultValueCloners); |
| } |
| if (_delayedDefaultValueCloner != null) { |
| // For constant constructors default values are computed and cloned part |
| // of the outline expression and we there set `isOutlineNode` to `true` |
| // below. |
| // |
| // For non-constant constructors default values are cloned as part of the |
| // full compilation using `KernelTarget._delayedDefaultValueCloners`. |
| delayedDefaultValueCloners |
| .add(_delayedDefaultValueCloner!..isOutlineNode = true); |
| _delayedDefaultValueCloner = null; |
| } |
| } |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| int computeDefaultTypes(ComputeDefaultTypeContext context, |
| {required bool inErrorRecovery}) { |
| assert(false, "Unexpected call to $runtimeType.computeDefaultType"); |
| return 0; |
| } |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| void checkVariance( |
| SourceClassBuilder sourceClassBuilder, TypeEnvironment typeEnvironment) {} |
| |
| @override |
| void checkTypes( |
| SourceLibraryBuilder library, TypeEnvironment typeEnvironment) {} |
| } |
| |
| class SourceExtensionTypeConstructorBuilder |
| extends AbstractSourceConstructorBuilder { |
| @override |
| final SourceLibraryBuilder libraryBuilder; |
| |
| @override |
| final SourceExtensionTypeDeclarationBuilder declarationBuilder; |
| |
| late final Procedure _constructor; |
| |
| @override |
| late final Procedure? _constructorTearOff; |
| |
| Set<SourceFieldBuilder>? _initializedFields; |
| |
| @override |
| List<Initializer> initializers = []; |
| |
| final MemberName _memberName; |
| |
| DelayedDefaultValueCloner? _delayedDefaultValueCloner; |
| |
| @override |
| final int fileOffset; |
| |
| @override |
| final Uri fileUri; |
| |
| SourceExtensionTypeConstructorBuilder( |
| {required List<MetadataBuilder>? metadata, |
| required Modifiers modifiers, |
| required OmittedTypeBuilder returnType, |
| required String name, |
| required List<NominalParameterBuilder>? typeParameters, |
| required List<FormalParameterBuilder>? formals, |
| required this.libraryBuilder, |
| required this.declarationBuilder, |
| required this.fileUri, |
| required int startOffset, |
| required this.fileOffset, |
| required int formalsOffset, |
| required int endOffset, |
| required Reference? constructorReference, |
| required Reference? tearOffReference, |
| required NameScheme nameScheme, |
| String? nativeMethodName, |
| required bool forAbstractClassOrEnumOrMixin, |
| required Token? beginInitializers}) |
| : _memberName = nameScheme.getDeclaredName(name), |
| super(metadata, modifiers, returnType, name, typeParameters, formals, |
| formalsOffset, nativeMethodName, beginInitializers) { |
| _constructor = new Procedure( |
| dummyName, ProcedureKind.Method, new FunctionNode(null), |
| fileUri: fileUri, reference: constructorReference) |
| ..fileOffset = fileOffset |
| ..fileEndOffset = endOffset; |
| nameScheme |
| .getConstructorMemberName(name, isTearOff: false) |
| .attachMember(_constructor); |
| _constructorTearOff = createConstructorTearOffProcedure( |
| nameScheme.getConstructorMemberName(name, isTearOff: true), |
| libraryBuilder, |
| fileUri, |
| fileOffset, |
| tearOffReference, |
| forAbstractClassOrEnumOrMixin: forAbstractClassOrEnumOrMixin, |
| forceCreateLowering: true) |
| ?..isExtensionTypeMember = true; |
| } |
| |
| @override |
| Builder get parent => declarationBuilder; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| Name get memberName => _memberName.name; |
| |
| SourceExtensionTypeDeclarationBuilder get extensionTypeDeclarationBuilder => |
| parent as SourceExtensionTypeDeclarationBuilder; |
| |
| @override |
| Member get readTarget => |
| _constructorTearOff ?? // Coverage-ignore(suite): Not run. |
| _constructor; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| Member? get writeTarget => null; |
| |
| @override |
| Member get invokeTarget => _constructor; |
| |
| @override |
| FunctionNode get function => _constructor.function; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| Iterable<Member> get exportedMembers => [_constructor]; |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| void addSuperParameterDefaultValueCloners( |
| List<DelayedDefaultValueCloner> delayedDefaultValueCloners) {} |
| |
| @override |
| void _inferSuperInitializingFormals(ClassHierarchyBase hierarchy) { |
| if (formals != null) { |
| for (FormalParameterBuilder formal in formals!) { |
| if (formal.isSuperInitializingFormal) { |
| TypeBuilder formalTypeBuilder = formal.type; |
| if (formalTypeBuilder is InferableTypeBuilder) { |
| formalTypeBuilder.registerType(const InvalidType()); |
| } |
| } |
| } |
| } |
| } |
| |
| @override |
| void buildOutlineExpressions(ClassHierarchy classHierarchy, |
| List<DelayedDefaultValueCloner> delayedDefaultValueCloners) { |
| super.buildOutlineExpressions(classHierarchy, delayedDefaultValueCloners); |
| |
| if (isConst) { |
| // For modular compilation purposes we need to include initializers |
| // for const constructors into the outline. |
| LookupScope typeParameterScope = |
| computeTypeParameterScope(extensionTypeDeclarationBuilder.scope); |
| _buildConstructorForOutline(beginInitializers, typeParameterScope); |
| _buildBody(); |
| } |
| beginInitializers = null; |
| |
| if (_delayedDefaultValueCloner != null) { |
| delayedDefaultValueCloners.add(_delayedDefaultValueCloner!); |
| } |
| } |
| |
| bool _hasBuiltBody = false; |
| |
| void _buildBody() { |
| if (_hasBuiltBody) { |
| return; |
| } |
| if (!isExternal) { |
| VariableDeclaration thisVariable = this.thisVariable!; |
| List<Statement> statements = [thisVariable]; |
| ExtensionTypeInitializerToStatementConverter visitor = |
| new ExtensionTypeInitializerToStatementConverter( |
| statements, thisVariable); |
| for (Initializer initializer in initializers) { |
| initializer.accept(visitor); |
| } |
| if (body != null && body is! EmptyStatement) { |
| statements.add(body!); |
| } |
| statements.add(new ReturnStatement(new VariableGet(thisVariable))); |
| body = new Block(statements); |
| } |
| _hasBuiltBody = true; |
| } |
| |
| @override |
| int buildBodyNodes(BuildNodesCallback f) { |
| _buildBody(); |
| // TODO(johnniwinther): Support augmentation. |
| return 0; |
| } |
| |
| @override |
| void buildOutlineNodes(BuildNodesCallback f) { |
| _build(); |
| f( |
| member: _constructor, |
| tearOff: _constructorTearOff, |
| kind: BuiltMemberKind.ExtensionTypeConstructor); |
| } |
| |
| bool _hasBeenBuilt = false; |
| |
| @override |
| void buildFunction() { |
| // According to the specification §9.3 the return type of a constructor |
| // function is its enclosing class. |
| super.buildFunction(); |
| ExtensionTypeDeclaration extensionTypeDeclaration = |
| extensionTypeDeclarationBuilder.extensionTypeDeclaration; |
| List<DartType> typeParameterTypes = <DartType>[]; |
| for (int i = 0; i < function.typeParameters.length; i++) { |
| TypeParameter typeParameter = function.typeParameters[i]; |
| typeParameterTypes.add( |
| new TypeParameterType.withDefaultNullabilityForLibrary( |
| typeParameter, libraryBuilder.library)); |
| } |
| ExtensionType type = new ExtensionType( |
| extensionTypeDeclaration, Nullability.nonNullable, typeParameterTypes); |
| returnType.registerInferredType(type); |
| } |
| |
| void _build() { |
| if (!_hasBeenBuilt) { |
| buildFunction(); |
| _constructor.function.fileOffset = charOpenParenOffset; |
| _constructor.function.fileEndOffset = _constructor.fileEndOffset; |
| _constructor.isConst = isConst; |
| _constructor.isExternal = isExternal; |
| _constructor.isStatic = true; |
| _constructor.isExtensionTypeMember = true; |
| |
| if (_constructorTearOff != null) { |
| _delayedDefaultValueCloner = buildConstructorTearOffProcedure( |
| tearOff: _constructorTearOff, |
| declarationConstructor: _constructor, |
| implementationConstructor: _constructor, |
| libraryBuilder: libraryBuilder); |
| } |
| |
| _hasBeenBuilt = true; |
| } |
| _buildFormals(_constructor); |
| } |
| |
| @override |
| void prepareInitializers() { |
| // For const constructors we parse initializers already at the outlining |
| // stage, there is no easy way to make body building stage skip initializer |
| // parsing, so we simply clear parsed initializers and rebuild them |
| // again. |
| // For when doing an experimental incremental compilation they are also |
| // potentially done more than once (because it rebuilds the bodies of an old |
| // compile), and so we also clear them. |
| // Note: this method clears both initializers from the target Kernel node |
| // and internal state associated with parsing initializers. |
| initializers = []; |
| redirectingInitializer = null; |
| superInitializer = null; |
| } |
| |
| @override |
| void prependInitializer(Initializer initializer) { |
| initializers.insert(0, initializer); |
| } |
| |
| @override |
| void registerInitializedField(SourceFieldBuilder fieldBuilder) { |
| (_initializedFields ??= {}).add(fieldBuilder); |
| } |
| |
| @override |
| Set<SourceFieldBuilder>? takeInitializedFields() { |
| Set<SourceFieldBuilder>? result = _initializedFields; |
| _initializedFields = null; |
| return result; |
| } |
| |
| @override |
| bool get isEffectivelyExternal => isExternal; |
| |
| @override |
| bool get isRedirecting { |
| for (Initializer initializer in initializers) { |
| if (initializer is ExtensionTypeRedirectingInitializer) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @override |
| bool get isEffectivelyRedirecting => isRedirecting; |
| |
| Substitution? _substitutionCache; |
| |
| Substitution get _substitution { |
| if (typeParameters != null) { |
| assert(extensionTypeDeclarationBuilder.typeParameters!.length == |
| typeParameters?.length); |
| _substitutionCache = Substitution.fromPairs( |
| extensionTypeDeclarationBuilder |
| .extensionTypeDeclaration.typeParameters, |
| new List<DartType>.generate( |
| extensionTypeDeclarationBuilder.typeParameters!.length, |
| (int index) => |
| new TypeParameterType.withDefaultNullabilityForLibrary( |
| function.typeParameters[index], |
| libraryBuilder.origin.library))); |
| } else { |
| _substitutionCache = Substitution.empty; |
| } |
| return _substitutionCache!; |
| } |
| |
| @override |
| DartType substituteFieldType(DartType fieldType) { |
| return _substitution.substituteType(fieldType); |
| } |
| |
| @override |
| BodyBuilderContext createBodyBuilderContext( |
| {required bool inOutlineBuildingPhase, |
| required bool inMetadata, |
| required bool inConstFields}) { |
| return new ExtensionTypeConstructorBodyBuilderContext(this, _constructor, |
| inOutlineBuildingPhase: inOutlineBuildingPhase, |
| inMetadata: inMetadata, |
| inConstFields: inConstFields); |
| } |
| |
| // TODO(johnniwinther): Add annotations to tear-offs. |
| @override |
| Iterable<Annotatable> get annotatables => [_constructor]; |
| |
| @override |
| bool get isAugmented => false; |
| } |
| |
| class ExtensionTypeInitializerToStatementConverter |
| implements InitializerVisitor<void> { |
| VariableDeclaration thisVariable; |
| final List<Statement> statements; |
| |
| ExtensionTypeInitializerToStatementConverter( |
| this.statements, this.thisVariable); |
| |
| @override |
| void visitAuxiliaryInitializer(AuxiliaryInitializer node) { |
| if (node is ExtensionTypeRedirectingInitializer) { |
| statements.add(new ExpressionStatement( |
| new VariableSet( |
| thisVariable, |
| new StaticInvocation(node.target, node.arguments) |
| ..fileOffset = node.fileOffset) |
| ..fileOffset = node.fileOffset) |
| ..fileOffset = node.fileOffset); |
| return; |
| } else if (node is ExtensionTypeRepresentationFieldInitializer) { |
| thisVariable |
| ..initializer = (node.value..parent = thisVariable) |
| ..fileOffset = node.fileOffset; |
| return; |
| } |
| // Coverage-ignore-block(suite): Not run. |
| throw new UnsupportedError( |
| "Unexpected initializer $node (${node.runtimeType})"); |
| } |
| |
| @override |
| void visitAssertInitializer(AssertInitializer node) { |
| statements.add(node.statement); |
| } |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| void visitFieldInitializer(FieldInitializer node) { |
| thisVariable |
| ..initializer = (node.value..parent = thisVariable) |
| ..fileOffset = node.fileOffset; |
| } |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| void visitInvalidInitializer(InvalidInitializer node) { |
| statements.add(new ExpressionStatement( |
| new InvalidExpression(null)..fileOffset = node.fileOffset) |
| ..fileOffset); |
| } |
| |
| @override |
| void visitLocalInitializer(LocalInitializer node) { |
| statements.add(node.variable); |
| } |
| |
| @override |
| void visitRedirectingInitializer(RedirectingInitializer node) { |
| throw new UnsupportedError( |
| "Unexpected initializer $node (${node.runtimeType})"); |
| } |
| |
| @override |
| // Coverage-ignore(suite): Not run. |
| void visitSuperInitializer(SuperInitializer node) { |
| // TODO(johnniwinther): Report error for this case. |
| } |
| } |
