| // Copyright (c) 2016, 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 fasta.kernel_target; |
| |
| import 'package:_fe_analyzer_shared/src/messages/severity.dart' show Severity; |
| import 'package:kernel/ast.dart'; |
| import 'package:kernel/class_hierarchy.dart' show ClassHierarchy; |
| import 'package:kernel/core_types.dart'; |
| import 'package:kernel/reference_from_index.dart' show IndexedClass; |
| import 'package:kernel/target/changed_structure_notifier.dart' |
| show ChangedStructureNotifier; |
| import 'package:kernel/target/targets.dart' show DiagnosticReporter, Target; |
| import 'package:kernel/transformations/value_class.dart' as valueClass; |
| import 'package:kernel/type_algebra.dart' show Substitution; |
| import 'package:kernel/type_environment.dart' show TypeEnvironment; |
| import 'package:package_config/package_config.dart' hide LanguageVersion; |
| |
| import '../../api_prototype/experimental_flags.dart' show ExperimentalFlag; |
| import '../../api_prototype/file_system.dart' show FileSystem; |
| import '../../base/nnbd_mode.dart'; |
| import '../../base/processed_options.dart' show ProcessedOptions; |
| import '../builder/builder.dart'; |
| import '../builder/class_builder.dart'; |
| import '../builder/constructor_builder.dart'; |
| import '../builder/dynamic_type_declaration_builder.dart'; |
| import '../builder/field_builder.dart'; |
| import '../builder/invalid_type_declaration_builder.dart'; |
| import '../builder/library_builder.dart'; |
| import '../builder/member_builder.dart'; |
| import '../builder/named_type_builder.dart'; |
| import '../builder/never_type_declaration_builder.dart'; |
| import '../builder/nullability_builder.dart'; |
| import '../builder/procedure_builder.dart'; |
| import '../builder/type_alias_builder.dart'; |
| import '../builder/type_builder.dart'; |
| import '../builder/type_declaration_builder.dart'; |
| import '../builder/type_variable_builder.dart'; |
| import '../builder/void_type_declaration_builder.dart'; |
| import '../compiler_context.dart' show CompilerContext; |
| import '../crash.dart' show withCrashReporting; |
| import '../dill/dill_target.dart' show DillTarget; |
| import '../kernel/constructor_tearoff_lowering.dart'; |
| import '../loader.dart' show Loader; |
| import '../messages.dart' |
| show |
| FormattedMessage, |
| LocatedMessage, |
| Message, |
| messageConstConstructorLateFinalFieldCause, |
| messageConstConstructorLateFinalFieldError, |
| messageConstConstructorNonFinalField, |
| messageConstConstructorNonFinalFieldCause, |
| messageConstConstructorRedirectionToNonConst, |
| noLength, |
| templateFieldNonNullableNotInitializedByConstructorError, |
| templateFieldNonNullableWithoutInitializerError, |
| templateFinalFieldNotInitialized, |
| templateFinalFieldNotInitializedByConstructor, |
| templateMissingImplementationCause, |
| templateSuperclassHasNoDefaultConstructor; |
| import '../problems.dart' show unhandled; |
| import '../scope.dart' show AmbiguousBuilder; |
| import '../source/name_scheme.dart'; |
| import '../source/source_class_builder.dart' show SourceClassBuilder; |
| import '../source/source_constructor_builder.dart'; |
| import '../source/source_field_builder.dart'; |
| import '../source/source_library_builder.dart' show SourceLibraryBuilder; |
| import '../source/source_loader.dart' show SourceLoader; |
| import '../target_implementation.dart' show TargetImplementation; |
| import '../ticker.dart' show Ticker; |
| import '../type_inference/type_schema.dart'; |
| import '../uri_translator.dart' show UriTranslator; |
| import 'benchmarker.dart' show BenchmarkPhases, Benchmarker; |
| import 'constant_evaluator.dart' as constants |
| show |
| EvaluationMode, |
| transformLibraries, |
| transformProcedure, |
| ConstantCoverage, |
| ConstantEvaluationData; |
| import 'kernel_constants.dart' show KernelConstantErrorReporter; |
| import 'kernel_helper.dart'; |
| import 'macro.dart'; |
| import 'verifier.dart' show verifyComponent, verifyGetStaticType; |
| |
| class KernelTarget extends TargetImplementation { |
| final Ticker ticker; |
| |
| /// The [FileSystem] which should be used to access files. |
| final FileSystem fileSystem; |
| |
| /// Whether comments should be scanned and parsed. |
| final bool includeComments; |
| |
| final DillTarget dillTarget; |
| |
| late final SourceLoader loader; |
| |
| Component? component; |
| |
| // 'dynamic' is always nullable. |
| // TODO(johnniwinther): Why isn't this using a FixedTypeBuilder? |
| final TypeBuilder dynamicType = new NamedTypeBuilder( |
| "dynamic", |
| const NullabilityBuilder.inherent(), |
| /* arguments = */ null, |
| /* fileUri = */ null, |
| /* charOffset = */ null, |
| instanceTypeVariableAccess: InstanceTypeVariableAccessState.Unexpected); |
| |
| final NamedTypeBuilder objectType = new NamedTypeBuilder( |
| "Object", |
| const NullabilityBuilder.omitted(), |
| /* arguments = */ null, |
| /* fileUri = */ null, |
| /* charOffset = */ null, |
| instanceTypeVariableAccess: InstanceTypeVariableAccessState.Unexpected); |
| |
| // Null is always nullable. |
| // TODO(johnniwinther): This could (maybe) use a FixedTypeBuilder when we |
| // have NullType? |
| final TypeBuilder nullType = new NamedTypeBuilder( |
| "Null", |
| const NullabilityBuilder.inherent(), |
| /* arguments = */ null, |
| /* fileUri = */ null, |
| /* charOffset = */ null, |
| instanceTypeVariableAccess: InstanceTypeVariableAccessState.Unexpected); |
| |
| // TODO(johnniwinther): Why isn't this using a FixedTypeBuilder? |
| final TypeBuilder bottomType = new NamedTypeBuilder( |
| "Never", |
| const NullabilityBuilder.omitted(), |
| /* arguments = */ null, |
| /* fileUri = */ null, |
| /* charOffset = */ null, |
| instanceTypeVariableAccess: InstanceTypeVariableAccessState.Unexpected); |
| |
| final NamedTypeBuilder enumType = new NamedTypeBuilder( |
| "Enum", |
| const NullabilityBuilder.omitted(), |
| /* arguments = */ null, |
| /* fileUri = */ null, |
| /* charOffset = */ null, |
| instanceTypeVariableAccess: InstanceTypeVariableAccessState.Unexpected); |
| |
| final NamedTypeBuilder underscoreEnumType = new NamedTypeBuilder( |
| "_Enum", |
| const NullabilityBuilder.omitted(), |
| /* arguments = */ null, |
| /* fileUri = */ null, |
| /* charOffset = */ null, |
| instanceTypeVariableAccess: InstanceTypeVariableAccessState.Unexpected); |
| |
| final bool excludeSource = !CompilerContext.current.options.embedSourceText; |
| |
| final Map<String, String>? environmentDefines = |
| CompilerContext.current.options.environmentDefines; |
| |
| final bool errorOnUnevaluatedConstant = |
| CompilerContext.current.options.errorOnUnevaluatedConstant; |
| |
| final List<SynthesizedFunctionNode> synthesizedFunctionNodes = |
| <SynthesizedFunctionNode>[]; |
| |
| final UriTranslator uriTranslator; |
| |
| @override |
| final Target backendTarget; |
| |
| @override |
| final CompilerContext context = CompilerContext.current; |
| |
| /// Shared with [CompilerContext]. |
| final Map<Uri, Source> uriToSource = CompilerContext.current.uriToSource; |
| |
| MemberBuilder? _cachedAbstractClassInstantiationError; |
| MemberBuilder? _cachedCompileTimeError; |
| MemberBuilder? _cachedDuplicatedFieldInitializerError; |
| MemberBuilder? _cachedNativeAnnotation; |
| |
| final ProcessedOptions _options; |
| |
| final Benchmarker? benchmarker; |
| |
| KernelTarget(this.fileSystem, this.includeComments, DillTarget dillTarget, |
| this.uriTranslator) |
| : dillTarget = dillTarget, |
| backendTarget = dillTarget.backendTarget, |
| _options = CompilerContext.current.options, |
| ticker = dillTarget.ticker, |
| benchmarker = dillTarget.benchmarker { |
| loader = createLoader(); |
| } |
| |
| bool isExperimentEnabledInLibrary(ExperimentalFlag flag, Uri importUri) { |
| return _options.isExperimentEnabledInLibrary(flag, importUri); |
| } |
| |
| Version getExperimentEnabledVersionInLibrary( |
| ExperimentalFlag flag, Uri importUri) { |
| return _options.getExperimentEnabledVersionInLibrary(flag, importUri); |
| } |
| |
| bool isExperimentEnabledInLibraryByVersion( |
| ExperimentalFlag flag, Uri importUri, Version version) { |
| return _options.isExperimentEnabledInLibraryByVersion( |
| flag, importUri, version); |
| } |
| |
| /// Returns `true` if the [flag] is enabled by default. |
| bool isExperimentEnabledByDefault(ExperimentalFlag flag) { |
| return _options.isExperimentEnabledByDefault(flag); |
| } |
| |
| /// Returns `true` if the [flag] is enabled globally. |
| /// |
| /// This is `true` either if the [flag] is passed through an explicit |
| /// `--enable-experiment` option or if the [flag] is expired and on by |
| /// default. |
| bool isExperimentEnabledGlobally(ExperimentalFlag flag) { |
| return _options.isExperimentEnabledGlobally(flag); |
| } |
| |
| Uri? translateUri(Uri uri) => uriTranslator.translate(uri); |
| |
| /// Returns a reference to the constructor of |
| /// `AbstractClassInstantiationError` error. The constructor is expected to |
| /// accept a single argument of type String, which is the name of the |
| /// abstract class. |
| // TODO: Use some other error before `AbstractClassInstantiationError` |
| // is removed. |
| MemberBuilder getAbstractClassInstantiationError(Loader loader) { |
| return _cachedAbstractClassInstantiationError ??= |
| loader.coreLibrary.getConstructor("AbstractClassInstantiationError"); |
| } |
| |
| /// Returns a reference to the constructor used for creating a compile-time |
| /// error. The constructor is expected to accept a single argument of type |
| /// String, which is the compile-time error message. |
| MemberBuilder getCompileTimeError(Loader loader) { |
| return _cachedCompileTimeError ??= loader.coreLibrary |
| .getConstructor("_CompileTimeError", bypassLibraryPrivacy: true); |
| } |
| |
| /// Returns a reference to the constructor used for creating a runtime error |
| /// when a final field is initialized twice. The constructor is expected to |
| /// accept a single argument which is the name of the field. |
| MemberBuilder getDuplicatedFieldInitializerError(Loader loader) { |
| return _cachedDuplicatedFieldInitializerError ??= loader.coreLibrary |
| .getConstructor("_DuplicatedFieldInitializerError", |
| bypassLibraryPrivacy: true); |
| } |
| |
| /// Returns a reference to the constructor used for creating `native` |
| /// annotations. The constructor is expected to accept a single argument of |
| /// type String, which is the name of the native method. |
| MemberBuilder getNativeAnnotation(SourceLoader loader) { |
| if (_cachedNativeAnnotation != null) return _cachedNativeAnnotation!; |
| LibraryBuilder internal = loader.read(Uri.parse("dart:_internal"), -1, |
| accessor: loader.coreLibrary); |
| return _cachedNativeAnnotation = internal.getConstructor("ExternalName"); |
| } |
| |
| void loadExtraRequiredLibraries(SourceLoader loader) { |
| for (String uri in backendTarget.extraRequiredLibraries) { |
| loader.read(Uri.parse(uri), 0, accessor: loader.coreLibrary); |
| } |
| if (context.compilingPlatform) { |
| for (String uri in backendTarget.extraRequiredLibrariesPlatform) { |
| loader.read(Uri.parse(uri), 0, accessor: loader.coreLibrary); |
| } |
| } |
| } |
| |
| FormattedMessage createFormattedMessage( |
| Message message, |
| int charOffset, |
| int length, |
| Uri? fileUri, |
| List<LocatedMessage>? messageContext, |
| Severity severity, |
| {List<Uri>? involvedFiles}) { |
| ProcessedOptions processedOptions = context.options; |
| return processedOptions.format( |
| fileUri != null |
| ? message.withLocation(fileUri, charOffset, length) |
| : message.withoutLocation(), |
| severity, |
| messageContext, |
| involvedFiles: involvedFiles); |
| } |
| |
| String get currentSdkVersionString { |
| return CompilerContext.current.options.currentSdkVersion; |
| } |
| |
| Version? _currentSdkVersion; |
| |
| Version get currentSdkVersion { |
| if (_currentSdkVersion == null) { |
| _parseCurrentSdkVersion(); |
| } |
| return _currentSdkVersion!; |
| } |
| |
| void _parseCurrentSdkVersion() { |
| bool good = false; |
| // ignore: unnecessary_null_comparison |
| if (currentSdkVersionString != null) { |
| List<String> dotSeparatedParts = currentSdkVersionString.split("."); |
| if (dotSeparatedParts.length >= 2) { |
| _currentSdkVersion = new Version(int.tryParse(dotSeparatedParts[0])!, |
| int.tryParse(dotSeparatedParts[1])!); |
| good = true; |
| } |
| } |
| if (!good) { |
| throw new StateError( |
| "Unparsable sdk version given: $currentSdkVersionString"); |
| } |
| } |
| |
| SourceLoader createLoader() => |
| new SourceLoader(fileSystem, includeComments, this); |
| |
| void addSourceInformation( |
| Uri importUri, Uri fileUri, List<int> lineStarts, List<int> sourceCode) { |
| uriToSource[fileUri] = |
| new Source(lineStarts, sourceCode, importUri, fileUri); |
| } |
| |
| /// Return list of same size as input with possibly translated uris. |
| List<Uri> setEntryPoints(List<Uri> entryPoints) { |
| List<Uri> result = <Uri>[]; |
| for (Uri entryPoint in entryPoints) { |
| Uri translatedEntryPoint = |
| getEntryPointUri(entryPoint, issueProblem: true); |
| result.add(translatedEntryPoint); |
| loader.readAsEntryPoint(translatedEntryPoint, |
| fileUri: translatedEntryPoint != entryPoint ? entryPoint : null); |
| } |
| return result; |
| } |
| |
| /// Return list of same size as input with possibly translated uris. |
| Uri getEntryPointUri(Uri entryPoint, {bool issueProblem: false}) { |
| String scheme = entryPoint.scheme; |
| switch (scheme) { |
| case "package": |
| case "dart": |
| case "data": |
| break; |
| default: |
| // Attempt to reverse-lookup [entryPoint] in package config. |
| String asString = "$entryPoint"; |
| Package? package = uriTranslator.packages.packageOf(entryPoint); |
| if (package != null) { |
| String packageName = package.name; |
| Uri packageUri = package.packageUriRoot; |
| if (packageUri.hasFragment == true) { |
| packageUri = packageUri.removeFragment(); |
| } |
| String prefix = "${packageUri}"; |
| if (asString.startsWith(prefix)) { |
| Uri reversed = Uri.parse( |
| "package:$packageName/${asString.substring(prefix.length)}"); |
| if (entryPoint == uriTranslator.translate(reversed)) { |
| entryPoint = reversed; |
| break; |
| } |
| } |
| } |
| } |
| return entryPoint; |
| } |
| |
| /// The class [cls] is involved in a cyclic definition. This method should |
| /// ensure that the cycle is broken, for example, by removing superclass and |
| /// implemented interfaces. |
| void breakCycle(ClassBuilder builder) { |
| Class cls = builder.cls; |
| cls.implementedTypes.clear(); |
| cls.supertype = null; |
| cls.mixedInType = null; |
| builder.supertypeBuilder = new NamedTypeBuilder( |
| "Object", |
| const NullabilityBuilder.omitted(), |
| /* arguments = */ null, |
| /* fileUri = */ null, |
| /* charOffset = */ null, |
| instanceTypeVariableAccess: InstanceTypeVariableAccessState.Unexpected) |
| ..bind(objectClassBuilder); |
| builder.interfaceBuilders = null; |
| builder.mixedInTypeBuilder = null; |
| } |
| |
| bool _hasComputedNeededPrecompilations = false; |
| |
| Future<NeededPrecompilations?> computeNeededPrecompilations() async { |
| assert(!_hasComputedNeededPrecompilations, |
| "Needed precompilations have already been computed."); |
| _hasComputedNeededPrecompilations = true; |
| if (loader.first == null) return null; |
| return withCrashReporting<NeededPrecompilations?>(() async { |
| benchmarker?.enterPhase(BenchmarkPhases.outline_kernelBuildOutlines); |
| await loader.buildOutlines(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_becomeCoreLibrary); |
| loader.coreLibrary.becomeCoreLibrary(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_resolveParts); |
| loader.resolveParts(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_computeMacroDeclarations); |
| NeededPrecompilations? result = loader.computeMacroDeclarations(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.unknown); |
| return result; |
| }, () => loader.currentUriForCrashReporting); |
| } |
| |
| /// Builds [augmentationLibraries] to the state expected after applying phase |
| /// 1 macros. |
| Future<void> _buildForPhase1( |
| Iterable<SourceLibraryBuilder> augmentationLibraries) async { |
| await loader.buildOutlines(); |
| // Normally patch libraries are applied in [SourceLoader.resolveParts]. |
| // For augmentation libraries we instead apply them directly here. |
| for (SourceLibraryBuilder augmentationLibrary in augmentationLibraries) { |
| augmentationLibrary.applyPatches(); |
| } |
| loader.computeLibraryScopes(augmentationLibraries); |
| // TODO(johnniwinther): Support computation of macro applications in |
| // augmentation libraries? |
| loader.resolveTypes(augmentationLibraries); |
| } |
| |
| /// Builds [augmentationLibraries] to the state expected after applying phase |
| /// 2 macros. |
| void _buildForPhase2(List<SourceLibraryBuilder> augmentationLibraries) { |
| loader.finishTypeVariables( |
| augmentationLibraries, objectClassBuilder, dynamicType); |
| for (SourceLibraryBuilder augmentationLibrary in augmentationLibraries) { |
| augmentationLibrary.build(loader.coreLibrary, modifyTarget: false); |
| } |
| loader.resolveConstructors(augmentationLibraries); |
| } |
| |
| /// Builds [augmentationLibraries] to the state expected after applying phase |
| /// 3 macros. |
| void _buildForPhase3(List<SourceLibraryBuilder> augmentationLibraries) { |
| // Currently there nothing to do here. The method is left in for symmetry. |
| } |
| |
| Future<BuildResult> buildOutlines({CanonicalName? nameRoot}) async { |
| if (loader.first == null) return new BuildResult(); |
| return withCrashReporting<BuildResult>(() async { |
| if (!_hasComputedNeededPrecompilations) { |
| NeededPrecompilations? neededPrecompilations = |
| await computeNeededPrecompilations(); |
| // To support macros, the needed macro libraries must be compiled be |
| // they are applied. Any supporting pipeline must therefore call |
| // [computeNeededPrecompilations] before calling [buildOutlines] in |
| // order to perform any need compilation in advance. |
| // |
| // If [neededPrecompilations] is non-null here, it means that macro |
| // compilation was needed but not performed. |
| if (neededPrecompilations != null) { |
| throw new UnsupportedError('Macro precompilation is not supported.'); |
| } |
| } |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_computeLibraryScopes); |
| loader.computeLibraryScopes(loader.libraryBuilders); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_computeMacroApplications); |
| MacroApplications? macroApplications = |
| await loader.computeMacroApplications(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_setupTopAndBottomTypes); |
| setupTopAndBottomTypes(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_resolveTypes); |
| loader.resolveTypes(loader.sourceLibraryBuilders); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_computeVariances); |
| loader.computeVariances(loader.sourceLibraryBuilders); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_computeDefaultTypes); |
| loader.computeDefaultTypes( |
| dynamicType, nullType, bottomType, objectClassBuilder); |
| |
| if (macroApplications != null) { |
| benchmarker?.enterPhase(BenchmarkPhases.outline_applyTypeMacros); |
| List<SourceLibraryBuilder> augmentationLibraries = |
| await macroApplications.applyTypeMacros(); |
| benchmarker |
| ?.enterPhase(BenchmarkPhases.outline_buildMacroTypesForPhase1); |
| await _buildForPhase1(augmentationLibraries); |
| } |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_checkSemantics); |
| List<SourceClassBuilder>? sourceClassBuilders = |
| loader.checkSemantics(objectClassBuilder); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_finishTypeVariables); |
| loader.finishTypeVariables( |
| loader.sourceLibraryBuilders, objectClassBuilder, dynamicType); |
| |
| benchmarker |
| ?.enterPhase(BenchmarkPhases.outline_createTypeInferenceEngine); |
| loader.createTypeInferenceEngine(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_buildComponent); |
| loader.buildComponent(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_installDefaultSupertypes); |
| installDefaultSupertypes(); |
| |
| benchmarker |
| ?.enterPhase(BenchmarkPhases.outline_installSyntheticConstructors); |
| installSyntheticConstructors(sourceClassBuilders); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_resolveConstructors); |
| loader.resolveConstructors(loader.sourceLibraryBuilders); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_link); |
| component = |
| link(new List<Library>.of(loader.libraries), nameRoot: nameRoot); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_computeCoreTypes); |
| computeCoreTypes(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_buildClassHierarchy); |
| loader.buildClassHierarchy(sourceClassBuilders, objectClassBuilder); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_checkSupertypes); |
| loader.checkSupertypes(sourceClassBuilders, enumClass); |
| |
| if (macroApplications != null) { |
| benchmarker?.enterPhase(BenchmarkPhases.outline_applyDeclarationMacros); |
| await macroApplications.applyDeclarationsMacros(loader.hierarchyBuilder, |
| (SourceLibraryBuilder augmentationLibrary) async { |
| List<SourceLibraryBuilder> augmentationLibraries = [ |
| augmentationLibrary |
| ]; |
| benchmarker?.enterPhase( |
| BenchmarkPhases.outline_buildMacroDeclarationsForPhase1); |
| await _buildForPhase1(augmentationLibraries); |
| benchmarker?.enterPhase( |
| BenchmarkPhases.outline_buildMacroDeclarationsForPhase2); |
| _buildForPhase2(augmentationLibraries); |
| }); |
| } |
| |
| benchmarker |
| ?.enterPhase(BenchmarkPhases.outline_buildClassHierarchyMembers); |
| loader.buildClassHierarchyMembers(sourceClassBuilders); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_computeHierarchy); |
| loader.computeHierarchy(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_computeShowHideElements); |
| loader.computeShowHideElements(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_installTypedefTearOffs); |
| loader.installTypedefTearOffs(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_performTopLevelInference); |
| loader.performTopLevelInference(sourceClassBuilders); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_checkOverrides); |
| loader.checkOverrides(sourceClassBuilders); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_checkAbstractMembers); |
| loader.checkAbstractMembers(sourceClassBuilders); |
| |
| benchmarker |
| ?.enterPhase(BenchmarkPhases.outline_addNoSuchMethodForwarders); |
| loader.addNoSuchMethodForwarders(sourceClassBuilders); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_checkMixins); |
| loader.checkMixins(sourceClassBuilders); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_buildOutlineExpressions); |
| loader.buildOutlineExpressions( |
| loader.hierarchy, synthesizedFunctionNodes); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_checkTypes); |
| loader.checkTypes(); |
| |
| benchmarker |
| ?.enterPhase(BenchmarkPhases.outline_checkRedirectingFactories); |
| loader.checkRedirectingFactories(sourceClassBuilders); |
| |
| benchmarker |
| ?.enterPhase(BenchmarkPhases.outline_finishSynthesizedParameters); |
| finishSynthesizedParameters(forOutline: true); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.outline_checkMainMethods); |
| loader.checkMainMethods(); |
| |
| benchmarker |
| ?.enterPhase(BenchmarkPhases.outline_installAllComponentProblems); |
| installAllComponentProblems(loader.allComponentProblems); |
| loader.allComponentProblems.clear(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.unknown); |
| |
| // For whatever reason sourceClassBuilders is kept alive for some amount |
| // of time, meaning that all source library builders will be kept alive |
| // (for whatever amount of time) even though we convert them to dill |
| // library builders. To avoid it we null it out here. |
| sourceClassBuilders = null; |
| |
| return new BuildResult( |
| component: component, macroApplications: macroApplications); |
| }, () => loader.currentUriForCrashReporting); |
| } |
| |
| /// Build the kernel representation of the component loaded by this |
| /// target. The component will contain full bodies for the code loaded from |
| /// sources, and only references to the code loaded by the [DillTarget], |
| /// which may or may not include method bodies (depending on what was loaded |
| /// into that target, an outline or a full kernel component). |
| /// |
| /// If [verify], run the default kernel verification on the resulting |
| /// component. |
| Future<BuildResult> buildComponent( |
| {required MacroApplications? macroApplications, |
| bool verify: false}) async { |
| if (loader.first == null) { |
| return new BuildResult(macroApplications: macroApplications); |
| } |
| return withCrashReporting<BuildResult>(() async { |
| ticker.logMs("Building component"); |
| |
| if (macroApplications != null) { |
| benchmarker?.enterPhase(BenchmarkPhases.body_applyDefinitionMacros); |
| List<SourceLibraryBuilder> augmentationLibraries = |
| await macroApplications.applyDefinitionMacros(); |
| benchmarker |
| ?.enterPhase(BenchmarkPhases.body_buildMacroDefinitionsForPhase1); |
| await _buildForPhase1(augmentationLibraries); |
| benchmarker |
| ?.enterPhase(BenchmarkPhases.body_buildMacroDefinitionsForPhase2); |
| _buildForPhase2(augmentationLibraries); |
| benchmarker |
| ?.enterPhase(BenchmarkPhases.body_buildMacroDefinitionsForPhase3); |
| _buildForPhase3(augmentationLibraries); |
| } |
| |
| benchmarker?.enterPhase(BenchmarkPhases.body_buildBodies); |
| await loader.buildBodies(loader.sourceLibraryBuilders); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.body_finishSynthesizedParameters); |
| finishSynthesizedParameters(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.body_finishDeferredLoadTearoffs); |
| loader.finishDeferredLoadTearoffs(); |
| |
| benchmarker |
| ?.enterPhase(BenchmarkPhases.body_finishNoSuchMethodForwarders); |
| loader.finishNoSuchMethodForwarders(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.body_collectSourceClasses); |
| List<SourceClassBuilder>? sourceClasses = loader.collectSourceClasses(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.body_finishNativeMethods); |
| loader.finishNativeMethods(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.body_finishPatchMethods); |
| loader.finishPatchMethods(); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.body_finishAllConstructors); |
| finishAllConstructors(sourceClasses); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.body_runBuildTransformations); |
| runBuildTransformations(); |
| |
| if (verify) { |
| benchmarker?.enterPhase(BenchmarkPhases.body_verify); |
| this.verify(); |
| } |
| |
| benchmarker?.enterPhase(BenchmarkPhases.body_installAllComponentProblems); |
| installAllComponentProblems(loader.allComponentProblems); |
| |
| benchmarker?.enterPhase(BenchmarkPhases.unknown); |
| |
| // For whatever reason sourceClasses is kept alive for some amount |
| // of time, meaning that all source library builders will be kept alive |
| // (for whatever amount of time) even though we convert them to dill |
| // library builders. To avoid it we null it out here. |
| sourceClasses = null; |
| return new BuildResult( |
| component: component, macroApplications: macroApplications); |
| }, () => loader.currentUriForCrashReporting); |
| } |
| |
| void installAllComponentProblems( |
| List<FormattedMessage> allComponentProblems) { |
| if (allComponentProblems.isNotEmpty) { |
| component!.problemsAsJson ??= <String>[]; |
| } |
| for (int i = 0; i < allComponentProblems.length; i++) { |
| FormattedMessage formattedMessage = allComponentProblems[i]; |
| component!.problemsAsJson!.add(formattedMessage.toJsonString()); |
| } |
| } |
| |
| /// Creates a component by combining [libraries] with the libraries of |
| /// `dillTarget.loader.component`. |
| Component link(List<Library> libraries, {CanonicalName? nameRoot}) { |
| libraries.addAll(dillTarget.loader.libraries); |
| |
| Map<Uri, Source> uriToSource = new Map<Uri, Source>(); |
| void copySource(Uri uri, Source source) { |
| uriToSource[uri] = excludeSource |
| ? new Source(source.lineStarts, const <int>[], source.importUri, |
| source.fileUri) |
| : source; |
| } |
| |
| this.uriToSource.forEach(copySource); |
| |
| Component component = backendTarget.configureComponent(new Component( |
| nameRoot: nameRoot, libraries: libraries, uriToSource: uriToSource)); |
| |
| NonNullableByDefaultCompiledMode? compiledMode = null; |
| if (isExperimentEnabledGlobally(ExperimentalFlag.nonNullable)) { |
| switch (loader.nnbdMode) { |
| case NnbdMode.Weak: |
| compiledMode = NonNullableByDefaultCompiledMode.Weak; |
| break; |
| case NnbdMode.Strong: |
| compiledMode = NonNullableByDefaultCompiledMode.Strong; |
| break; |
| case NnbdMode.Agnostic: |
| compiledMode = NonNullableByDefaultCompiledMode.Agnostic; |
| break; |
| } |
| } else { |
| compiledMode = NonNullableByDefaultCompiledMode.Weak; |
| } |
| if (loader.hasInvalidNnbdModeLibrary) { |
| compiledMode = NonNullableByDefaultCompiledMode.Invalid; |
| } |
| |
| Reference? mainReference; |
| |
| if (loader.first != null) { |
| // TODO(sigmund): do only for full program |
| Builder? declaration = |
| loader.first!.exportScope.lookup("main", -1, loader.first!.fileUri); |
| if (declaration is AmbiguousBuilder) { |
| AmbiguousBuilder problem = declaration; |
| declaration = problem.getFirstDeclaration(); |
| } |
| if (declaration is ProcedureBuilder) { |
| mainReference = declaration.procedure.reference; |
| } |
| } |
| component.setMainMethodAndMode(mainReference, true, compiledMode); |
| |
| assert(_getLibraryNnbdModeError(component) == null, |
| "Got error: ${_getLibraryNnbdModeError(component)}"); |
| |
| ticker.logMs("Linked component"); |
| return component; |
| } |
| |
| String? _getLibraryNnbdModeError(Component component) { |
| if (loader.hasInvalidNnbdModeLibrary) { |
| // At least 1 library should be invalid or there should be a mix of strong |
| // and weak. For libraries we've just compiled it will be marked as |
| // invalid, but for libraries loaded from dill they have their original |
| // value (i.e. either strong or weak). |
| bool foundInvalid = false; |
| bool foundStrong = false; |
| bool foundWeak = false; |
| for (Library library in component.libraries) { |
| if (library.nonNullableByDefaultCompiledMode == |
| NonNullableByDefaultCompiledMode.Invalid) { |
| foundInvalid = true; |
| break; |
| } else if (!foundWeak && |
| library.nonNullableByDefaultCompiledMode == |
| NonNullableByDefaultCompiledMode.Weak) { |
| foundWeak = true; |
| if (foundStrong) break; |
| } else if (!foundStrong && |
| library.nonNullableByDefaultCompiledMode == |
| NonNullableByDefaultCompiledMode.Strong) { |
| foundStrong = true; |
| if (foundWeak) break; |
| } |
| } |
| if (!foundInvalid && !(foundStrong && foundWeak)) { |
| return "hasInvalidNnbdModeLibrary is true, but no library was invalid " |
| "and there was no weak/strong mix."; |
| } |
| if (component.mode != NonNullableByDefaultCompiledMode.Invalid) { |
| return "Component mode is not invalid as expected"; |
| } |
| } else { |
| // No libraries are allowed to be invalid, and should all be compatible |
| // with the component nnbd mode setting. |
| if (component.mode == NonNullableByDefaultCompiledMode.Invalid) { |
| return "Component mode is invalid which was not expected"; |
| } |
| if (component.modeRaw == null) { |
| return "Component mode not set at all"; |
| } |
| for (Library library in component.libraries) { |
| if (component.mode == NonNullableByDefaultCompiledMode.Strong) { |
| if (library.nonNullableByDefaultCompiledMode != |
| NonNullableByDefaultCompiledMode.Strong && |
| library.nonNullableByDefaultCompiledMode != |
| NonNullableByDefaultCompiledMode.Agnostic) { |
| return "Expected library ${library.importUri} to be strong or " |
| "agnostic, but was ${library.nonNullableByDefaultCompiledMode}"; |
| } |
| } else if (component.mode == NonNullableByDefaultCompiledMode.Weak) { |
| if (library.nonNullableByDefaultCompiledMode != |
| NonNullableByDefaultCompiledMode.Weak && |
| library.nonNullableByDefaultCompiledMode != |
| NonNullableByDefaultCompiledMode.Agnostic) { |
| return "Expected library ${library.importUri} to be weak or " |
| "agnostic, but was ${library.nonNullableByDefaultCompiledMode}"; |
| } |
| } else if (component.mode == |
| NonNullableByDefaultCompiledMode.Agnostic) { |
| if (library.nonNullableByDefaultCompiledMode != |
| NonNullableByDefaultCompiledMode.Agnostic) { |
| return "Expected library ${library.importUri} to be agnostic, " |
| "but was ${library.nonNullableByDefaultCompiledMode}"; |
| } |
| } else { |
| return "Expected component mode to be either strong, " |
| "weak or agnostic but was ${component.mode}"; |
| } |
| } |
| } |
| return null; |
| } |
| |
| void installDefaultSupertypes() { |
| Class objectClass = this.objectClass; |
| for (SourceLibraryBuilder library in loader.sourceLibraryBuilders) { |
| library.installDefaultSupertypes(objectClassBuilder, objectClass); |
| } |
| ticker.logMs("Installed Object as implicit superclass"); |
| } |
| |
| void installSyntheticConstructors(List<SourceClassBuilder> builders) { |
| Class objectClass = this.objectClass; |
| for (SourceClassBuilder builder in builders) { |
| if (builder.cls != objectClass && !builder.isPatch) { |
| if (builder.isPatch || |
| builder.isMixinDeclaration || |
| builder.isExtension) { |
| continue; |
| } |
| if (builder.isMixinApplication) { |
| installForwardingConstructors(builder); |
| } else { |
| installDefaultConstructor(builder); |
| } |
| } |
| } |
| ticker.logMs("Installed synthetic constructors"); |
| } |
| |
| ClassBuilder get objectClassBuilder => objectType.declaration as ClassBuilder; |
| |
| Class get objectClass => objectClassBuilder.cls; |
| |
| ClassBuilder get enumClassBuilder => enumType.declaration as ClassBuilder; |
| |
| Class get enumClass => enumClassBuilder.cls; |
| |
| /// If [builder] doesn't have a constructors, install the defaults. |
| void installDefaultConstructor(SourceClassBuilder builder) { |
| assert(!builder.isMixinApplication); |
| assert(!builder.isExtension); |
| // TODO(askesc): Make this check light-weight in the absence of patches. |
| if (builder.cls.constructors.isNotEmpty) return; |
| if (builder.cls.redirectingFactories.isNotEmpty) return; |
| for (Procedure proc in builder.cls.procedures) { |
| if (proc.isFactory) return; |
| } |
| |
| IndexedClass? indexedClass = builder.referencesFromIndexed; |
| Reference? constructorReference; |
| Reference? tearOffReference; |
| if (indexedClass != null) { |
| constructorReference = |
| indexedClass.lookupConstructorReference(new Name("")); |
| tearOffReference = indexedClass.lookupGetterReference( |
| constructorTearOffName("", indexedClass.library)); |
| } |
| |
| /// From [Dart Programming Language Specification, 4th Edition]( |
| /// https://ecma-international.org/publications/files/ECMA-ST/ECMA-408.pdf): |
| /// >Iff no constructor is specified for a class C, it implicitly has a |
| /// >default constructor C() : super() {}, unless C is class Object. |
| // The superinitializer is installed below in [finishConstructors]. |
| builder.addSyntheticConstructor(_makeDefaultConstructor( |
| builder, constructorReference, tearOffReference)); |
| } |
| |
| void installForwardingConstructors(SourceClassBuilder builder) { |
| assert(builder.isMixinApplication); |
| if (builder.library.loader != loader) return; |
| if (builder.cls.constructors.isNotEmpty) { |
| // These were installed by a subclass in the recursive call below. |
| return; |
| } |
| |
| /// From [Dart Programming Language Specification, 4th Edition]( |
| /// https://ecma-international.org/publications/files/ECMA-ST/ECMA-408.pdf): |
| /// >A mixin application of the form S with M; defines a class C with |
| /// >superclass S. |
| /// >... |
| |
| /// >Let LM be the library in which M is declared. For each generative |
| /// >constructor named qi(Ti1 ai1, . . . , Tiki aiki), i in 1..n of S |
| /// >that is accessible to LM , C has an implicitly declared constructor |
| /// >named q'i = [C/S]qi of the form q'i(ai1,...,aiki) : |
| /// >super(ai1,...,aiki);. |
| TypeBuilder? type = builder.supertypeBuilder; |
| TypeDeclarationBuilder? supertype; |
| if (type is NamedTypeBuilder) { |
| supertype = type.declaration; |
| } else { |
| unhandled("${type.runtimeType}", "installForwardingConstructors", |
| builder.charOffset, builder.fileUri); |
| } |
| if (supertype is TypeAliasBuilder) { |
| TypeAliasBuilder aliasBuilder = supertype; |
| NamedTypeBuilder namedBuilder = type; |
| supertype = aliasBuilder.unaliasDeclaration(namedBuilder.arguments, |
| isUsedAsClass: true, |
| usedAsClassCharOffset: namedBuilder.charOffset, |
| usedAsClassFileUri: namedBuilder.fileUri); |
| } |
| if (supertype is SourceClassBuilder && supertype.isMixinApplication) { |
| installForwardingConstructors(supertype); |
| } |
| |
| IndexedClass? indexedClass = builder.referencesFromIndexed; |
| Reference? constructorReference; |
| Reference? tearOffReference; |
| if (indexedClass != null) { |
| constructorReference = |
| indexedClass.lookupConstructorReference(new Name("")); |
| tearOffReference = indexedClass.lookupGetterReference( |
| constructorTearOffName("", indexedClass.library)); |
| } |
| |
| if (supertype is ClassBuilder) { |
| ClassBuilder superclassBuilder = supertype; |
| bool isConstructorAdded = false; |
| Map<TypeParameter, DartType>? substitutionMap; |
| |
| void addSyntheticConstructor(String name, MemberBuilder memberBuilder) { |
| if (memberBuilder.member is Constructor) { |
| substitutionMap ??= builder.getSubstitutionMap(superclassBuilder.cls); |
| Reference? constructorReference; |
| Reference? tearOffReference; |
| if (indexedClass != null) { |
| constructorReference = indexedClass |
| // We use the name of the member builder here since it refers to |
| // the library of the original declaration when private. For |
| // instance: |
| // |
| // // lib1: |
| // class Super { Super._() } |
| // class Subclass extends Class { |
| // Subclass() : super._(); |
| // } |
| // // lib2: |
| // class Mixin {} |
| // class Class = Super with Mixin; |
| // |
| // Here `super._()` in `Subclass` targets the forwarding stub |
| // added to `Class` whose name is `_` private to `lib1`. |
| .lookupConstructorReference(memberBuilder.member.name); |
| tearOffReference = indexedClass.lookupGetterReference( |
| constructorTearOffName(name, indexedClass.library)); |
| } |
| builder.addSyntheticConstructor(_makeMixinApplicationConstructor( |
| builder, |
| builder.cls.mixin, |
| memberBuilder as MemberBuilderImpl, |
| substitutionMap!, |
| constructorReference, |
| tearOffReference)); |
| isConstructorAdded = true; |
| } |
| } |
| |
| superclassBuilder.forEachConstructor(addSyntheticConstructor); |
| |
| if (!isConstructorAdded) { |
| builder.addSyntheticConstructor(_makeDefaultConstructor( |
| builder, constructorReference, tearOffReference)); |
| } |
| } else if (supertype is InvalidTypeDeclarationBuilder || |
| supertype is TypeVariableBuilder || |
| supertype is DynamicTypeDeclarationBuilder || |
| supertype is VoidTypeDeclarationBuilder || |
| supertype is NeverTypeDeclarationBuilder || |
| supertype is TypeAliasBuilder) { |
| builder.addSyntheticConstructor(_makeDefaultConstructor( |
| builder, constructorReference, tearOffReference)); |
| } else { |
| unhandled("${supertype.runtimeType}", "installForwardingConstructors", |
| builder.charOffset, builder.fileUri); |
| } |
| } |
| |
| SyntheticSourceConstructorBuilder _makeMixinApplicationConstructor( |
| SourceClassBuilder classBuilder, |
| Class mixin, |
| MemberBuilder superConstructorBuilder, |
| Map<TypeParameter, DartType> substitutionMap, |
| Reference? constructorReference, |
| Reference? tearOffReference) { |
| bool hasTypeDependency = false; |
| Substitution substitution = Substitution.fromMap(substitutionMap); |
| |
| VariableDeclaration copyFormal(VariableDeclaration formal) { |
| VariableDeclaration copy = new VariableDeclaration(formal.name, |
| isFinal: formal.isFinal, |
| isConst: formal.isConst, |
| type: const UnknownType()); |
| if (!hasTypeDependency && formal.type is! UnknownType) { |
| copy.type = substitution.substituteType(formal.type); |
| } else { |
| hasTypeDependency = true; |
| } |
| return copy; |
| } |
| |
| Class cls = classBuilder.cls; |
| Constructor superConstructor = |
| superConstructorBuilder.member as Constructor; |
| bool isConst = superConstructor.isConst; |
| if (isConst && mixin.fields.isNotEmpty) { |
| for (Field field in mixin.fields) { |
| if (!field.isStatic) { |
| isConst = false; |
| break; |
| } |
| } |
| } |
| List<VariableDeclaration> positionalParameters = <VariableDeclaration>[]; |
| List<VariableDeclaration> namedParameters = <VariableDeclaration>[]; |
| List<Expression> positional = <Expression>[]; |
| List<NamedExpression> named = <NamedExpression>[]; |
| |
| for (VariableDeclaration formal |
| in superConstructor.function.positionalParameters) { |
| positionalParameters.add(copyFormal(formal)); |
| positional.add(new VariableGet(positionalParameters.last)); |
| } |
| for (VariableDeclaration formal |
| in superConstructor.function.namedParameters) { |
| VariableDeclaration clone = copyFormal(formal); |
| namedParameters.add(clone); |
| named.add(new NamedExpression( |
| formal.name!, new VariableGet(namedParameters.last))); |
| } |
| FunctionNode function = new FunctionNode(new EmptyStatement(), |
| positionalParameters: positionalParameters, |
| namedParameters: namedParameters, |
| requiredParameterCount: |
| superConstructor.function.requiredParameterCount, |
| returnType: makeConstructorReturnType(cls)); |
| SuperInitializer initializer = new SuperInitializer( |
| superConstructor, new Arguments(positional, named: named)); |
| SynthesizedFunctionNode synthesizedFunctionNode = |
| new SynthesizedFunctionNode( |
| substitutionMap, superConstructor.function, function); |
| if (!isConst) { |
| // For constant constructors default values are computed and cloned part |
| // of the outline expression and therefore passed to the |
| // [SyntheticConstructorBuilder] below. |
| // |
| // For non-constant constructors default values are cloned as part of the |
| // full compilation using [synthesizedFunctionNodes]. |
| synthesizedFunctionNodes.add(synthesizedFunctionNode); |
| } |
| Constructor constructor = new Constructor(function, |
| name: superConstructor.name, |
| initializers: <Initializer>[initializer], |
| isSynthetic: true, |
| isConst: isConst, |
| reference: constructorReference, |
| fileUri: cls.fileUri) |
| // TODO(johnniwinther): Should we add file offsets to synthesized |
| // constructors? |
| //..fileOffset = cls.fileOffset |
| //..fileEndOffset = cls.fileOffset |
| ..isNonNullableByDefault = cls.enclosingLibrary.isNonNullableByDefault; |
| |
| if (hasTypeDependency) { |
| loader.registerTypeDependency( |
| constructor, |
| new TypeDependency(constructor, superConstructor, substitution, |
| copyReturnType: false)); |
| } |
| |
| Procedure? constructorTearOff = createConstructorTearOffProcedure( |
| superConstructor.name.text, |
| classBuilder.library, |
| cls.fileUri, |
| cls.fileOffset, |
| tearOffReference, |
| forAbstractClassOrEnum: classBuilder.isAbstract); |
| |
| if (constructorTearOff != null) { |
| buildConstructorTearOffProcedure(constructorTearOff, constructor, |
| classBuilder.cls, classBuilder.library); |
| } |
| return new SyntheticSourceConstructorBuilder( |
| classBuilder, constructor, constructorTearOff, |
| // We pass on the original constructor and the cloned function nodes to |
| // ensure that the default values are computed and cloned for the |
| // outline. It is needed to make the default values a part of the |
| // outline for const constructors, and additionally it is required for |
| // a potential subclass using super initializing parameters that will |
| // required the cloning of the default values. |
| origin: superConstructorBuilder, |
| synthesizedFunctionNode: synthesizedFunctionNode); |
| } |
| |
| void finishSynthesizedParameters({bool forOutline = false}) { |
| for (SynthesizedFunctionNode synthesizedFunctionNode |
| in synthesizedFunctionNodes) { |
| if (!forOutline || synthesizedFunctionNode.isOutlineNode) { |
| synthesizedFunctionNode.cloneDefaultValues(); |
| } |
| } |
| if (!forOutline) { |
| synthesizedFunctionNodes.clear(); |
| } |
| ticker.logMs("Cloned default values of formals"); |
| } |
| |
| SyntheticSourceConstructorBuilder _makeDefaultConstructor( |
| SourceClassBuilder classBuilder, |
| Reference? constructorReference, |
| Reference? tearOffReference) { |
| Class enclosingClass = classBuilder.cls; |
| Constructor constructor = new Constructor( |
| new FunctionNode(new EmptyStatement(), |
| returnType: makeConstructorReturnType(enclosingClass)), |
| name: new Name(""), |
| isSynthetic: true, |
| reference: constructorReference, |
| fileUri: enclosingClass.fileUri) |
| ..fileOffset = enclosingClass.fileOffset |
| // TODO(johnniwinther): Should we add file end offsets to synthesized |
| // constructors? |
| //..fileEndOffset = enclosingClass.fileOffset |
| ..isNonNullableByDefault = |
| enclosingClass.enclosingLibrary.isNonNullableByDefault; |
| Procedure? constructorTearOff = createConstructorTearOffProcedure( |
| '', |
| classBuilder.library, |
| enclosingClass.fileUri, |
| enclosingClass.fileOffset, |
| tearOffReference, |
| forAbstractClassOrEnum: |
| enclosingClass.isAbstract || enclosingClass.isEnum); |
| if (constructorTearOff != null) { |
| buildConstructorTearOffProcedure(constructorTearOff, constructor, |
| classBuilder.cls, classBuilder.library); |
| } |
| return new SyntheticSourceConstructorBuilder( |
| classBuilder, constructor, constructorTearOff); |
| } |
| |
| DartType makeConstructorReturnType(Class enclosingClass) { |
| List<DartType> typeParameterTypes = <DartType>[]; |
| for (int i = 0; i < enclosingClass.typeParameters.length; i++) { |
| TypeParameter typeParameter = enclosingClass.typeParameters[i]; |
| typeParameterTypes.add( |
| new TypeParameterType.withDefaultNullabilityForLibrary( |
| typeParameter, enclosingClass.enclosingLibrary)); |
| } |
| return new InterfaceType(enclosingClass, |
| enclosingClass.enclosingLibrary.nonNullable, typeParameterTypes); |
| } |
| |
| void setupTopAndBottomTypes() { |
| objectType.bind(loader.coreLibrary |
| .lookupLocalMember("Object", required: true) as TypeDeclarationBuilder); |
| dynamicType.bind( |
| loader.coreLibrary.lookupLocalMember("dynamic", required: true) |
| as TypeDeclarationBuilder); |
| ClassBuilder nullClassBuilder = loader.coreLibrary |
| .lookupLocalMember("Null", required: true) as ClassBuilder; |
| nullType.bind(nullClassBuilder..isNullClass = true); |
| bottomType.bind(loader.coreLibrary |
| .lookupLocalMember("Never", required: true) as TypeDeclarationBuilder); |
| enumType.bind(loader.coreLibrary.lookupLocalMember("Enum", required: true) |
| as TypeDeclarationBuilder); |
| underscoreEnumType.bind(loader.coreLibrary |
| .lookupLocalMember("_Enum", required: true) as TypeDeclarationBuilder); |
| } |
| |
| void computeCoreTypes() { |
| List<Library> libraries = <Library>[]; |
| for (String platformLibrary in [ |
| "dart:_internal", |
| "dart:async", |
| "dart:core", |
| "dart:mirrors", |
| ...backendTarget.extraIndexedLibraries |
| ]) { |
| Uri uri = Uri.parse(platformLibrary); |
| LibraryBuilder? libraryBuilder = loader.lookupLibraryBuilder(uri); |
| if (libraryBuilder == null) { |
| // TODO(ahe): This is working around a bug in kernel_driver_test or |
| // kernel_driver. |
| bool found = false; |
| for (Library target in dillTarget.loader.libraries) { |
| if (target.importUri == uri) { |
| libraries.add(target); |
| found = true; |
| break; |
| } |
| } |
| if (!found && uri.path != "mirrors") { |
| // dart:mirrors is optional. |
| throw "Can't find $uri"; |
| } |
| } else { |
| libraries.add(libraryBuilder.library); |
| } |
| } |
| Component platformLibraries = |
| backendTarget.configureComponent(new Component()); |
| // Add libraries directly to prevent that their parents are changed. |
| platformLibraries.libraries.addAll(libraries); |
| loader.computeCoreTypes(platformLibraries); |
| } |
| |
| void finishAllConstructors(List<SourceClassBuilder> builders) { |
| Class objectClass = this.objectClass; |
| for (SourceClassBuilder builder in builders) { |
| Class cls = builder.cls; |
| if (cls != objectClass) { |
| finishConstructors(builder); |
| } |
| } |
| ticker.logMs("Finished constructors"); |
| } |
| |
| /// Ensure constructors of [builder] have the correct initializers and other |
| /// requirements. |
| void finishConstructors(SourceClassBuilder builder) { |
| if (builder.isPatch) return; |
| Class cls = builder.cls; |
| |
| /// Quotes below are from [Dart Programming Language Specification, 4th |
| /// Edition](http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-408.pdf): |
| List<SourceFieldBuilder> uninitializedFields = []; |
| List<SourceFieldBuilder> nonFinalFields = []; |
| List<SourceFieldBuilder> lateFinalFields = []; |
| |
| builder |
| .forEachDeclaredField((String name, SourceFieldBuilder fieldBuilder) { |
| if (fieldBuilder.isAbstract || fieldBuilder.isExternal) { |
| // Skip abstract and external fields. These are abstract/external |
| // getters/setters and have no initialization. |
| return; |
| } |
| if (fieldBuilder.isDeclarationInstanceMember && !fieldBuilder.isFinal) { |
| nonFinalFields.add(fieldBuilder); |
| } |
| if (fieldBuilder.isDeclarationInstanceMember && |
| fieldBuilder.isLate && |
| fieldBuilder.isFinal) { |
| lateFinalFields.add(fieldBuilder); |
| } |
| if (!fieldBuilder.hasInitializer) { |
| // In case of duplicating fields the earliest ones (those that |
| // declared towards the beginning of the file) come last in the list. |
| // To report errors on the first definition of a field, we need to |
| // iterate until that last element. |
| SourceFieldBuilder earliest = fieldBuilder; |
| Builder current = fieldBuilder; |
| while (current.next != null) { |
| current = current.next!; |
| if (current is SourceFieldBuilder && !fieldBuilder.hasInitializer) { |
| earliest = current; |
| } |
| } |
| uninitializedFields.add(earliest); |
| } |
| }); |
| |
| Constructor? superTarget; |
| // In the underlying Kernel IR the patches are already applied, so |
| // cls.constructors should contain both constructors from the original |
| // declaration and the constructors from the patch. The assert checks that |
| // it's so. |
| assert(() { |
| Set<String> patchConstructorNames = {}; |
| builder.forEachDeclaredConstructor( |
| (String name, ConstructorBuilder constructorBuilder) { |
| // Don't add the default constructor's name. |
| if (name.isNotEmpty) { |
| patchConstructorNames.add(name); |
| } |
| }); |
| builder.constructorScope.forEach((String name, Builder builder) { |
| if (builder is ConstructorBuilder) { |
| patchConstructorNames.remove(name); |
| } |
| }); |
| Set<String> kernelConstructorNames = |
| cls.constructors.map((c) => c.name.text).toSet().difference({""}); |
| return kernelConstructorNames.containsAll(patchConstructorNames); |
| }(), |
| "Constructors of class '${builder.fullNameForErrors}' " |
| "aren't fully patched."); |
| for (Constructor constructor in cls.constructors) { |
| bool isRedirecting = false; |
| for (Initializer initializer in constructor.initializers) { |
| if (initializer is RedirectingInitializer) { |
| if (constructor.isConst && !initializer.target.isConst) { |
| builder.addProblem(messageConstConstructorRedirectionToNonConst, |
| initializer.fileOffset, initializer.target.name.text.length); |
| } |
| isRedirecting = true; |
| break; |
| } |
| } |
| if (!isRedirecting) { |
| /// >If no superinitializer is provided, an implicit superinitializer |
| /// >of the form super() is added at the end of k’s initializer list, |
| /// >unless the enclosing class is class Object. |
| if (constructor.initializers.isEmpty) { |
| superTarget ??= defaultSuperConstructor(cls); |
| Initializer initializer; |
| if (superTarget == null) { |
| int offset = constructor.fileOffset; |
| if (offset == -1 && constructor.isSynthetic) { |
| offset = cls.fileOffset; |
| } |
| builder.addProblem( |
| templateSuperclassHasNoDefaultConstructor |
| .withArguments(cls.superclass!.name), |
| offset, |
| noLength); |
| initializer = new InvalidInitializer(); |
| } else { |
| initializer = |
| new SuperInitializer(superTarget, new Arguments.empty()) |
| ..isSynthetic = true; |
| } |
| constructor.initializers.add(initializer); |
| initializer.parent = constructor; |
| } |
| if (constructor.function.body == null) { |
| /// >If a generative constructor c is not a redirecting constructor |
| /// >and no body is provided, then c implicitly has an empty body {}. |
| /// We use an empty statement instead. |
| constructor.function.body = new EmptyStatement() |
| ..parent = constructor.function; |
| } |
| |
| if (constructor.isConst && nonFinalFields.isNotEmpty) { |
| builder.addProblem(messageConstConstructorNonFinalField, |
| constructor.fileOffset, noLength, |
| context: nonFinalFields |
| .map((field) => messageConstConstructorNonFinalFieldCause |
| .withLocation(field.fileUri, field.charOffset, noLength)) |
| .toList()); |
| nonFinalFields.clear(); |
| } |
| SourceLibraryBuilder library = builder.library; |
| if (library.isNonNullableByDefault) { |
| if (constructor.isConst && lateFinalFields.isNotEmpty) { |
| for (FieldBuilder field in lateFinalFields) { |
| builder.addProblem(messageConstConstructorLateFinalFieldError, |
| field.charOffset, noLength, |
| context: [ |
| messageConstConstructorLateFinalFieldCause.withLocation( |
| constructor.fileUri, constructor.fileOffset, noLength) |
| ]); |
| } |
| lateFinalFields.clear(); |
| } |
| } |
| } |
| } |
| |
| Map<ConstructorBuilder, Set<SourceFieldBuilder>> |
| constructorInitializedFields = new Map.identity(); |
| Set<SourceFieldBuilder>? initializedFields = null; |
| |
| builder.forEachDeclaredConstructor( |
| (String name, DeclaredSourceConstructorBuilder constructorBuilder) { |
| if (constructorBuilder.isExternal) return; |
| // In case of duplicating constructors the earliest ones (those that |
| // declared towards the beginning of the file) come last in the list. |
| // To report errors on the first definition of a constructor, we need to |
| // iterate until that last element. |
| DeclaredSourceConstructorBuilder earliest = constructorBuilder; |
| Builder earliestBuilder = constructorBuilder; |
| while (earliestBuilder.next != null) { |
| earliestBuilder = earliestBuilder.next!; |
| if (earliestBuilder is DeclaredSourceConstructorBuilder) { |
| earliest = earliestBuilder; |
| } |
| } |
| |
| bool isRedirecting = false; |
| for (Initializer initializer in earliest.constructor.initializers) { |
| if (initializer is RedirectingInitializer) { |
| isRedirecting = true; |
| } |
| } |
| if (!isRedirecting) { |
| Set<SourceFieldBuilder> fields = |
| earliest.takeInitializedFields() ?? const {}; |
| constructorInitializedFields[earliest] = fields; |
| (initializedFields ??= new Set<SourceFieldBuilder>.identity()) |
| .addAll(fields); |
| } |
| }); |
| |
| // Run through all fields that aren't initialized by any constructor, and |
| // set their initializer to `null`. |
| for (SourceFieldBuilder fieldBuilder in uninitializedFields) { |
| if (initializedFields == null || |
| !initializedFields!.contains(fieldBuilder)) { |
| bool uninitializedFinalOrNonNullableFieldIsError = |
| cls.enclosingLibrary.isNonNullableByDefault || |
| (cls.constructors.isNotEmpty || cls.isMixinDeclaration); |
| if (!fieldBuilder.isLate) { |
| if (fieldBuilder.isFinal && |
| uninitializedFinalOrNonNullableFieldIsError) { |
| String uri = '${fieldBuilder.library.importUri}'; |
| String file = fieldBuilder.fileUri.pathSegments.last; |
| if (uri == 'dart:html' || |
| uri == 'dart:svg' || |
| uri == 'dart:_native_typed_data' || |
| uri == 'dart:_interceptors' && file == 'js_string.dart') { |
| // TODO(johnniwinther): Use external getters instead of final |
| // fields. See https://github.com/dart-lang/sdk/issues/33762 |
| } else { |
| builder.library.addProblem( |
| templateFinalFieldNotInitialized |
| .withArguments(fieldBuilder.name), |
| fieldBuilder.charOffset, |
| fieldBuilder.name.length, |
| fieldBuilder.fileUri); |
| } |
| } else if (fieldBuilder.fieldType is! InvalidType && |
| fieldBuilder.fieldType.isPotentiallyNonNullable && |
| uninitializedFinalOrNonNullableFieldIsError) { |
| SourceLibraryBuilder library = builder.library; |
| if (library.isNonNullableByDefault) { |
| library.addProblem( |
| templateFieldNonNullableWithoutInitializerError.withArguments( |
| fieldBuilder.name, |
| fieldBuilder.fieldType, |
| library.isNonNullableByDefault), |
| fieldBuilder.charOffset, |
| fieldBuilder.name.length, |
| fieldBuilder.fileUri); |
| } |
| } |
| } |
| } |
| } |
| |
| // Run through all fields that are initialized by some constructor, and |
| // make sure that all other constructors also initialize them. |
| constructorInitializedFields.forEach((ConstructorBuilder constructorBuilder, |
| Set<FieldBuilder> fieldBuilders) { |
| for (SourceFieldBuilder fieldBuilder |
| in initializedFields!.difference(fieldBuilders)) { |
| if (!fieldBuilder.hasInitializer && !fieldBuilder.isLate) { |
| FieldInitializer initializer = |
| new FieldInitializer(fieldBuilder.field, new NullLiteral()) |
| ..isSynthetic = true; |
| initializer.parent = constructorBuilder.constructor; |
| constructorBuilder.constructor.initializers.insert(0, initializer); |
| if (fieldBuilder.isFinal) { |
| builder.library.addProblem( |
| templateFinalFieldNotInitializedByConstructor |
| .withArguments(fieldBuilder.name), |
| constructorBuilder.charOffset, |
| constructorBuilder.name.length, |
| constructorBuilder.fileUri, |
| context: [ |
| templateMissingImplementationCause |
| .withArguments(fieldBuilder.name) |
| .withLocation(fieldBuilder.fileUri, |
| fieldBuilder.charOffset, fieldBuilder.name.length) |
| ]); |
| } else if (fieldBuilder.field.type is! InvalidType && |
| !fieldBuilder.isLate && |
| fieldBuilder.field.type.isPotentiallyNonNullable) { |
| SourceLibraryBuilder library = builder.library; |
| if (library.isNonNullableByDefault) { |
| library.addProblem( |
| templateFieldNonNullableNotInitializedByConstructorError |
| .withArguments(fieldBuilder.name, fieldBuilder.field.type, |
| library.isNonNullableByDefault), |
| constructorBuilder.charOffset, |
| noLength, |
| constructorBuilder.fileUri, |
| context: [ |
| templateMissingImplementationCause |
| .withArguments(fieldBuilder.name) |
| .withLocation(fieldBuilder.fileUri, |
| fieldBuilder.charOffset, fieldBuilder.name.length) |
| ]); |
| } |
| } |
| } |
| } |
| }); |
| |
| Set<Field>? initializedFieldsKernel = null; |
| if (initializedFields != null) { |
| for (FieldBuilder fieldBuilder in initializedFields!) { |
| (initializedFieldsKernel ??= new Set<Field>.identity()) |
| .add(fieldBuilder.field); |
| } |
| } |
| // In the underlying Kernel IR the patches are already applied, so |
| // cls.fields should contain both fields from the original |
| // declaration and the fields from the patch. The assert checks that |
| // it's so. |
| assert(() { |
| Set<String> patchFieldNames = {}; |
| builder |
| .forEachDeclaredField((String name, SourceFieldBuilder fieldBuilder) { |
| patchFieldNames.add(NameScheme.createFieldName( |
| FieldNameType.Field, |
| name, |
| isInstanceMember: fieldBuilder.isClassInstanceMember, |
| className: builder.name, |
| isSynthesized: fieldBuilder.isLateLowered, |
| )); |
| }); |
| builder.forEach((String name, Builder builder) { |
| if (builder is FieldBuilder) { |
| patchFieldNames.remove(name); |
| } |
| }); |
| Set<String> kernelFieldNames = cls.fields.map((f) => f.name.text).toSet(); |
| return kernelFieldNames.containsAll(patchFieldNames); |
| }(), |
| "Fields of class '${builder.fullNameForErrors}' " |
| "aren't fully patched."); |
| for (Field field in cls.fields) { |
| if (field.initializer == null && |
| !field.isLate && |
| (initializedFieldsKernel == null || |
| !initializedFieldsKernel.contains(field))) { |
| field.initializer = new NullLiteral()..parent = field; |
| } |
| } |
| } |
| |
| /// Run all transformations that are needed when building a bundle of |
| /// libraries for the first time. |
| void runBuildTransformations() { |
| backendTarget.performPreConstantEvaluationTransformations( |
| component!, |
| loader.coreTypes, |
| loader.libraries, |
| new KernelDiagnosticReporter(loader), |
| logger: (String msg) => ticker.logMs(msg), |
| changedStructureNotifier: changedStructureNotifier); |
| |
| TypeEnvironment environment = |
| new TypeEnvironment(loader.coreTypes, loader.hierarchy); |
| constants.EvaluationMode evaluationMode = _getConstantEvaluationMode(); |
| |
| constants.ConstantEvaluationData constantEvaluationData = |
| constants.transformLibraries( |
| component!, |
| loader.libraries, |
| backendTarget, |
| environmentDefines, |
| environment, |
| new KernelConstantErrorReporter(loader), |
| evaluationMode, |
| evaluateAnnotations: true, |
| enableTripleShift: |
| isExperimentEnabledGlobally(ExperimentalFlag.tripleShift), |
| enableConstFunctions: |
| isExperimentEnabledGlobally(ExperimentalFlag.constFunctions), |
| enableConstructorTearOff: isExperimentEnabledGlobally( |
| ExperimentalFlag.constructorTearoffs), |
| errorOnUnevaluatedConstant: errorOnUnevaluatedConstant); |
| ticker.logMs("Evaluated constants"); |
| |
| markLibrariesUsed(constantEvaluationData.visitedLibraries); |
| |
| constants.ConstantCoverage coverage = constantEvaluationData.coverage; |
| coverage.constructorCoverage.forEach((Uri fileUri, Set<Reference> value) { |
| Source? source = uriToSource[fileUri]; |
| // ignore: unnecessary_null_comparison |
| if (source != null && fileUri != null) { |
| source.constantCoverageConstructors ??= new Set<Reference>(); |
| source.constantCoverageConstructors!.addAll(value); |
| } |
| }); |
| ticker.logMs("Added constant coverage"); |
| |
| if (loader.target.context.options |
| .isExperimentEnabledGlobally(ExperimentalFlag.valueClass)) { |
| valueClass.transformComponent(component!, loader.coreTypes, |
| loader.hierarchy, loader.referenceFromIndex, environment); |
| ticker.logMs("Lowered value classes"); |
| } |
| |
| backendTarget.performModularTransformationsOnLibraries( |
| component!, |
| loader.coreTypes, |
| loader.hierarchy, |
| loader.libraries, |
| environmentDefines, |
| new KernelDiagnosticReporter(loader), |
| loader.referenceFromIndex, |
| logger: (String msg) => ticker.logMs(msg), |
| changedStructureNotifier: changedStructureNotifier); |
| } |
| |
| ChangedStructureNotifier? get changedStructureNotifier => null; |
| |
| void runProcedureTransformations(Procedure procedure) { |
| TypeEnvironment environment = |
| new TypeEnvironment(loader.coreTypes, loader.hierarchy); |
| constants.EvaluationMode evaluationMode = _getConstantEvaluationMode(); |
| |
| constants.transformProcedure( |
| procedure, |
| backendTarget, |
| component!, |
| environmentDefines, |
| environment, |
| new KernelConstantErrorReporter(loader), |
| evaluationMode, |
| evaluateAnnotations: true, |
| enableTripleShift: |
| isExperimentEnabledGlobally(ExperimentalFlag.tripleShift), |
| enableConstFunctions: |
| isExperimentEnabledGlobally(ExperimentalFlag.constFunctions), |
| enableConstructorTearOff: |
| isExperimentEnabledGlobally(ExperimentalFlag.constructorTearoffs), |
| errorOnUnevaluatedConstant: errorOnUnevaluatedConstant, |
| ); |
| ticker.logMs("Evaluated constants"); |
| |
| backendTarget.performTransformationsOnProcedure( |
| loader.coreTypes, loader.hierarchy, procedure, environmentDefines, |
| logger: (String msg) => ticker.logMs(msg)); |
| } |
| |
| constants.EvaluationMode getConstantEvaluationModeForTesting() => |
| _getConstantEvaluationMode(); |
| |
| constants.EvaluationMode _getConstantEvaluationMode() { |
| constants.EvaluationMode evaluationMode; |
| // If nnbd is not enabled we will use weak evaluation mode. This is needed |
| // because the SDK might be agnostic and therefore needs to be weakened |
| // for legacy mode. |
| assert( |
| isExperimentEnabledGlobally(ExperimentalFlag.nonNullable) || |
| loader.nnbdMode == NnbdMode.Weak, |
| "Non-weak nnbd mode found without experiment enabled: " |
| "${loader.nnbdMode}."); |
| switch (loader.nnbdMode) { |
| case NnbdMode.Weak: |
| evaluationMode = constants.EvaluationMode.weak; |
| break; |
| case NnbdMode.Strong: |
| evaluationMode = constants.EvaluationMode.strong; |
| break; |
| case NnbdMode.Agnostic: |
| evaluationMode = constants.EvaluationMode.agnostic; |
| break; |
| } |
| return evaluationMode; |
| } |
| |
| void verify() { |
| // TODO(ahe): How to handle errors. |
| verifyComponent(component!, context.options.target, |
| skipPlatform: context.options.skipPlatformVerification); |
| ClassHierarchy hierarchy = |
| new ClassHierarchy(component!, new CoreTypes(component!), |
| onAmbiguousSupertypes: (Class cls, Supertype a, Supertype b) { |
| // An error has already been reported. |
| }); |
| verifyGetStaticType( |
| new TypeEnvironment(loader.coreTypes, hierarchy), component!, |
| skipPlatform: context.options.skipPlatformVerification); |
| ticker.logMs("Verified component"); |
| } |
| |
| /// Return `true` if the given [library] was built by this [KernelTarget] |
| /// from sources, and not loaded from a [DillTarget]. |
| /// Note that this is meant for debugging etc and that it is slow, each |
| /// call takes O(# libraries). |
| bool isSourceLibraryForDebugging(Library library) { |
| return loader.libraries.contains(library); |
| } |
| |
| void readPatchFiles(SourceLibraryBuilder library) { |
| assert(library.importUri.isScheme("dart")); |
| List<Uri>? patches = uriTranslator.getDartPatches(library.importUri.path); |
| if (patches != null) { |
| SourceLibraryBuilder? first; |
| for (Uri patch in patches) { |
| if (first == null) { |
| first = library.loader.read(patch, -1, |
| fileUri: patch, |
| origin: library, |
| accessor: library) as SourceLibraryBuilder; |
| } else { |
| // If there's more than one patch file, it's interpreted as a part of |
| // the patch library. |
| SourceLibraryBuilder part = library.loader.read(patch, -1, |
| origin: library, |
| fileUri: patch, |
| accessor: library) as SourceLibraryBuilder; |
| first.parts.add(part); |
| first.partOffsets.add(-1); |
| part.partOfUri = first.importUri; |
| } |
| } |
| } |
| } |
| |
| void releaseAncillaryResources() { |
| component = null; |
| } |
| |
| void markLibrariesUsed(Set<Library> visitedLibraries) { |
| // Default implementation does nothing. |
| } |
| } |
| |
| /// Looks for a constructor call that matches `super()` from a constructor in |
| /// [cls]. Such a constructor may have optional arguments, but no required |
| /// arguments. |
| Constructor? defaultSuperConstructor(Class cls) { |
| Class? superclass = cls.superclass; |
| if (superclass != null) { |
| for (Constructor constructor in superclass.constructors) { |
| if (constructor.name.text.isEmpty) { |
| return constructor.function.requiredParameterCount == 0 |
| ? constructor |
| : null; |
| } |
| } |
| } |
| return null; |
| } |
| |
| class KernelDiagnosticReporter |
| extends DiagnosticReporter<Message, LocatedMessage> { |
| final SourceLoader loader; |
| |
| KernelDiagnosticReporter(this.loader); |
| |
| @override |
| void report(Message message, int charOffset, int length, Uri? fileUri, |
| {List<LocatedMessage>? context}) { |
| loader.addProblem(message, charOffset, noLength, fileUri, context: context); |
| } |
| } |
| |
| class BuildResult { |
| final Component? component; |
| final NeededPrecompilations? neededPrecompilations; |
| final MacroApplications? macroApplications; |
| |
| BuildResult( |
| {this.component, this.macroApplications, this.neededPrecompilations}); |
| } |
