| // 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.diet_listener; |
| |
| import 'package:kernel/ast.dart' |
| show AsyncMarker, Class, InterfaceType, Typedef; |
| import 'package:kernel/ast.dart'; |
| |
| import 'package:kernel/class_hierarchy.dart' show ClassHierarchy; |
| |
| import 'package:kernel/core_types.dart' show CoreTypes; |
| |
| import '../../scanner/token.dart' show Token; |
| |
| import '../builder/builder.dart'; |
| |
| import '../deprecated_problems.dart' |
| show Crash, deprecated_InputError, deprecated_inputError; |
| |
| import '../fasta_codes.dart' |
| show Message, messageExpectedBlockToSkip, templateInternalProblemNotFound; |
| |
| import '../kernel/body_builder.dart' show BodyBuilder; |
| |
| import '../parser.dart' |
| show IdentifierContext, MemberKind, Parser, closeBraceTokenFor, optional; |
| |
| import '../problems.dart' show internalProblem, unexpected; |
| |
| import '../type_inference/type_inference_engine.dart' show TypeInferenceEngine; |
| |
| import 'source_library_builder.dart' show SourceLibraryBuilder; |
| |
| import 'stack_listener.dart' show NullValue, StackListener; |
| |
| import '../quote.dart' show unescapeString; |
| |
| class DietListener extends StackListener { |
| final SourceLibraryBuilder library; |
| |
| final ClassHierarchy hierarchy; |
| |
| final CoreTypes coreTypes; |
| |
| final bool enableNative; |
| |
| final bool stringExpectedAfterNative; |
| |
| final TypeInferenceEngine typeInferenceEngine; |
| |
| int importExportDirectiveIndex = 0; |
| int partDirectiveIndex = 0; |
| |
| ClassBuilder currentClass; |
| |
| /// For top-level declarations, this is the library scope. For class members, |
| /// this is the instance scope of [currentClass]. |
| Scope memberScope; |
| |
| @override |
| Uri uri; |
| |
| DietListener(SourceLibraryBuilder library, this.hierarchy, this.coreTypes, |
| this.typeInferenceEngine) |
| : library = library, |
| uri = library.fileUri, |
| memberScope = library.scope, |
| enableNative = |
| library.loader.target.backendTarget.enableNative(library.uri), |
| stringExpectedAfterNative = |
| library.loader.target.backendTarget.nativeExtensionExpectsString; |
| |
| void discard(int n) { |
| for (int i = 0; i < n; i++) { |
| pop(); |
| } |
| } |
| |
| @override |
| void endMetadataStar(int count) { |
| debugEvent("MetadataStar"); |
| push(popList(count)?.first ?? NullValue.Metadata); |
| } |
| |
| @override |
| void endMetadata(Token beginToken, Token periodBeforeName, Token endToken) { |
| debugEvent("Metadata"); |
| discard(periodBeforeName == null ? 1 : 2); |
| push(beginToken); |
| } |
| |
| @override |
| void endPartOf( |
| Token partKeyword, Token ofKeyword, Token semicolon, bool hasName) { |
| debugEvent("PartOf"); |
| if (hasName) discard(1); |
| discard(1); // Metadata. |
| } |
| |
| @override |
| void handleInvalidTopLevelDeclaration(Token beginToken) { |
| debugEvent("InvalidTopLevelDeclaration"); |
| pop(); // metadata star |
| } |
| |
| @override |
| void handleNoArguments(Token token) { |
| debugEvent("NoArguments"); |
| } |
| |
| @override |
| void handleModifiers(int count) { |
| debugEvent("Modifiers"); |
| } |
| |
| @override |
| void handleNoTypeArguments(Token token) { |
| debugEvent("NoTypeArguments"); |
| } |
| |
| @override |
| void handleNoConstructorReferenceContinuationAfterTypeArguments(Token token) { |
| debugEvent("NoConstructorReferenceContinuationAfterTypeArguments"); |
| } |
| |
| @override |
| void handleNoType(Token lastConsumed) { |
| debugEvent("NoType"); |
| } |
| |
| @override |
| void handleType(Token beginToken, Token endToken) { |
| debugEvent("Type"); |
| discard(1); |
| } |
| |
| @override |
| void endTypeList(int count) { |
| debugEvent("TypeList"); |
| } |
| |
| @override |
| void endMixinApplication(Token withKeyword) { |
| debugEvent("MixinApplication"); |
| } |
| |
| @override |
| void endTypeArguments(int count, Token beginToken, Token endToken) { |
| debugEvent("TypeArguments"); |
| } |
| |
| @override |
| void endFieldInitializer(Token assignmentOperator, Token token) { |
| debugEvent("FieldInitializer"); |
| } |
| |
| @override |
| void handleNoFieldInitializer(Token token) { |
| debugEvent("NoFieldInitializer"); |
| } |
| |
| @override |
| void handleNoTypeVariables(Token token) { |
| debugEvent("NoTypeVariables"); |
| } |
| |
| @override |
| void endFormalParameters( |
| int count, Token beginToken, Token endToken, MemberKind kind) { |
| debugEvent("FormalParameters"); |
| assert(count == 0); // Count is always 0 as the diet parser skips formals. |
| if (kind != MemberKind.GeneralizedFunctionType && |
| identical(peek(), "-") && |
| identical(beginToken.next, endToken)) { |
| pop(); |
| push("unary-"); |
| } |
| push(beginToken); |
| } |
| |
| @override |
| void handleNoFormalParameters(Token token, MemberKind kind) { |
| debugEvent("NoFormalParameters"); |
| if (identical(peek(), "-")) { |
| pop(); |
| push("unary-"); |
| } |
| push(token); |
| } |
| |
| @override |
| void endFunctionType(Token functionToken, Token endToken) { |
| debugEvent("FunctionType"); |
| discard(1); |
| } |
| |
| @override |
| void endFunctionTypeAlias( |
| Token typedefKeyword, Token equals, Token endToken) { |
| debugEvent("FunctionTypeAlias"); |
| |
| if (equals == null) pop(); // endToken |
| String name = pop(); |
| Token metadata = pop(); |
| |
| Builder typedefBuilder = lookupBuilder(typedefKeyword, null, name); |
| Typedef target = typedefBuilder.target; |
| var metadataConstants = parseMetadata(typedefBuilder, metadata); |
| if (metadataConstants != null) { |
| for (var metadataConstant in metadataConstants) { |
| target.addAnnotation(metadataConstant); |
| } |
| } |
| |
| checkEmpty(typedefKeyword.charOffset); |
| } |
| |
| @override |
| void endFields(int count, Token beginToken, Token endToken) { |
| debugEvent("Fields"); |
| buildFields(count, beginToken, false); |
| } |
| |
| @override |
| void handleAsyncModifier(Token asyncToken, Token startToken) { |
| debugEvent("AsyncModifier"); |
| } |
| |
| @override |
| void endTopLevelMethod(Token beginToken, Token getOrSet, Token endToken) { |
| debugEvent("TopLevelMethod"); |
| Token bodyToken = pop(); |
| String name = pop(); |
| Token metadata = pop(); |
| checkEmpty(beginToken.charOffset); |
| buildFunctionBody(bodyToken, lookupBuilder(beginToken, getOrSet, name), |
| MemberKind.TopLevelMethod, metadata); |
| } |
| |
| @override |
| void handleNoFunctionBody(Token token) { |
| debugEvent("NoFunctionBody"); |
| } |
| |
| @override |
| void endTopLevelFields(int count, Token beginToken, Token endToken) { |
| debugEvent("TopLevelFields"); |
| buildFields(count, beginToken, true); |
| } |
| |
| @override |
| void handleVoidKeyword(Token token) { |
| debugEvent("VoidKeyword"); |
| } |
| |
| @override |
| void handleNoInitializers() { |
| debugEvent("NoInitializers"); |
| } |
| |
| @override |
| void endInitializers(int count, Token beginToken, Token endToken) { |
| debugEvent("Initializers"); |
| } |
| |
| @override |
| void handleIdentifier(Token token, IdentifierContext context) { |
| if (context == IdentifierContext.enumValueDeclaration) { |
| // Discard the metadata. |
| pop(); |
| } |
| super.handleIdentifier(token, context); |
| } |
| |
| @override |
| void handleQualified(Token period) { |
| debugEvent("handleQualified"); |
| String suffix = pop(); |
| var prefix = pop(); |
| push(new QualifiedName(prefix, suffix, period.charOffset)); |
| } |
| |
| @override |
| void endLibraryName(Token libraryKeyword, Token semicolon) { |
| debugEvent("endLibraryName"); |
| pop(); // name |
| |
| Token metadata = pop(); |
| Library target = library.target; |
| var metadataConstants = parseMetadata(library, metadata); |
| if (metadataConstants != null) { |
| for (var metadataConstant in metadataConstants) { |
| target.addAnnotation(metadataConstant); |
| } |
| } |
| } |
| |
| @override |
| void beginLiteralString(Token token) { |
| debugEvent("beginLiteralString"); |
| } |
| |
| @override |
| void handleStringPart(Token token) { |
| debugEvent("StringPart"); |
| } |
| |
| @override |
| void endLiteralString(int interpolationCount, Token endToken) { |
| debugEvent("endLiteralString"); |
| } |
| |
| @override |
| void handleNativeClause(Token nativeToken, bool hasName) { |
| debugEvent("NativeClause"); |
| } |
| |
| @override |
| void handleScript(Token token) { |
| debugEvent("Script"); |
| } |
| |
| @override |
| void handleStringJuxtaposition(int literalCount) { |
| debugEvent("StringJuxtaposition"); |
| } |
| |
| @override |
| void handleDottedName(int count, Token firstIdentifier) { |
| debugEvent("DottedName"); |
| discard(count); |
| } |
| |
| @override |
| void endConditionalUri(Token ifKeyword, Token leftParen, Token equalSign) { |
| debugEvent("ConditionalUri"); |
| } |
| |
| @override |
| void endConditionalUris(int count) { |
| debugEvent("ConditionalUris"); |
| } |
| |
| @override |
| void handleOperatorName(Token operatorKeyword, Token token) { |
| debugEvent("OperatorName"); |
| push(token.stringValue); |
| } |
| |
| @override |
| void handleInvalidOperatorName(Token operatorKeyword, Token token) { |
| debugEvent("InvalidOperatorName"); |
| push('invalid'); |
| } |
| |
| @override |
| void handleIdentifierList(int count) { |
| debugEvent("IdentifierList"); |
| discard(count); |
| } |
| |
| @override |
| void endShow(Token showKeyword) { |
| debugEvent("Show"); |
| } |
| |
| @override |
| void endHide(Token hideKeyword) { |
| debugEvent("Hide"); |
| } |
| |
| @override |
| void endCombinators(int count) { |
| debugEvent("Combinators"); |
| } |
| |
| @override |
| void handleImportPrefix(Token deferredKeyword, Token asKeyword) { |
| debugEvent("ImportPrefix"); |
| pushIfNull(asKeyword, NullValue.Prefix); |
| } |
| |
| @override |
| void endImport(Token importKeyword, Token semicolon) { |
| debugEvent("Import"); |
| pop(NullValue.Prefix); |
| |
| Token metadata = pop(); |
| |
| // Native imports must be skipped because they aren't assigned corresponding |
| // LibraryDependency nodes. |
| Token importUriToken = importKeyword.next; |
| String importUri = unescapeString(importUriToken.lexeme); |
| if (importUri.startsWith("dart-ext:")) return; |
| |
| Library libraryNode = library.target; |
| LibraryDependency dependency = |
| libraryNode.dependencies[importExportDirectiveIndex++]; |
| var metadataConstants = parseMetadata(library, metadata); |
| if (metadataConstants != null) { |
| for (var metadataConstant in metadataConstants) { |
| dependency.addAnnotation(metadataConstant); |
| } |
| } |
| } |
| |
| @override |
| void handleRecoverImport(Token semicolon) { |
| pop(NullValue.Prefix); |
| } |
| |
| @override |
| void endExport(Token exportKeyword, Token semicolon) { |
| debugEvent("Export"); |
| |
| Token metadata = pop(); |
| Library libraryNode = library.target; |
| LibraryDependency dependency = |
| libraryNode.dependencies[importExportDirectiveIndex++]; |
| var metadataConstants = parseMetadata(library, metadata); |
| if (metadataConstants != null) { |
| for (var metadataConstant in metadataConstants) { |
| dependency.addAnnotation(metadataConstant); |
| } |
| } |
| } |
| |
| @override |
| void endPart(Token partKeyword, Token semicolon) { |
| debugEvent("Part"); |
| |
| Token metadata = pop(); |
| Library libraryNode = library.target; |
| LibraryPart part = libraryNode.parts[partDirectiveIndex++]; |
| var metadataConstants = parseMetadata(library, metadata); |
| if (metadataConstants != null) { |
| for (var metadataConstant in metadataConstants) { |
| part.addAnnotation(metadataConstant); |
| } |
| } |
| } |
| |
| @override |
| void endTypeVariable(Token token, Token extendsOrSuper) { |
| debugEvent("TypeVariable"); |
| discard(2); // Name and metadata. |
| } |
| |
| @override |
| void endTypeVariables(int count, Token beginToken, Token endToken) { |
| debugEvent("TypeVariables"); |
| } |
| |
| @override |
| void handleModifier(Token token) { |
| debugEvent("Modifier"); |
| } |
| |
| @override |
| void endConstructorReference( |
| Token start, Token periodBeforeName, Token endToken) { |
| debugEvent("ConstructorReference"); |
| popIfNotNull(periodBeforeName); |
| } |
| |
| @override |
| void endFactoryMethod( |
| Token beginToken, Token factoryKeyword, Token endToken) { |
| debugEvent("FactoryMethod"); |
| Token bodyToken = pop(); |
| Object name = pop(); |
| Token metadata = pop(); |
| checkEmpty(beginToken.charOffset); |
| if (bodyToken == null || |
| optional("=", closeBraceTokenFor(bodyToken).next)) { |
| // TODO(ahe): Don't skip this. We need to compile metadata and |
| // redirecting factory bodies. |
| return; |
| } |
| buildFunctionBody(bodyToken, lookupConstructor(beginToken, name), |
| MemberKind.Factory, metadata); |
| } |
| |
| @override |
| void endRedirectingFactoryBody(Token beginToken, Token endToken) { |
| debugEvent("RedirectingFactoryBody"); |
| discard(1); // ConstructorReference. |
| } |
| |
| @override |
| void handleNativeFunctionBody(Token nativeToken, Token semicolon) { |
| debugEvent("NativeFunctionBody"); |
| } |
| |
| @override |
| void handleNativeFunctionBodyIgnored(Token nativeToken, Token semicolon) { |
| debugEvent("NativeFunctionBodyIgnored"); |
| } |
| |
| @override |
| void handleNativeFunctionBodySkipped(Token nativeToken, Token semicolon) { |
| debugEvent("NativeFunctionBodySkipped"); |
| if (!enableNative) { |
| super.handleUnrecoverableError(nativeToken, messageExpectedBlockToSkip); |
| } |
| } |
| |
| @override |
| void endMethod( |
| Token getOrSet, Token beginToken, Token beginParam, Token endToken) { |
| debugEvent("Method"); |
| // TODO(danrubel): Consider removing the beginParam parameter |
| // and using bodyToken, but pushing a NullValue on the stack |
| // in handleNoFormalParameters rather than the supplied token. |
| pop(); // bodyToken |
| Object name = pop(); |
| Token metadata = pop(); |
| checkEmpty(beginToken.charOffset); |
| ProcedureBuilder builder; |
| if (name is QualifiedName || |
| (getOrSet == null && name == currentClass.name)) { |
| builder = lookupConstructor(beginToken, name); |
| } else { |
| builder = lookupBuilder(beginToken, getOrSet, name); |
| } |
| buildFunctionBody( |
| beginParam, |
| builder, |
| builder.isStatic ? MemberKind.StaticMethod : MemberKind.NonStaticMethod, |
| metadata); |
| } |
| |
| StackListener createListener( |
| ModifierBuilder builder, Scope memberScope, bool isInstanceMember, |
| [Scope formalParameterScope]) { |
| InterfaceType thisType; |
| if (builder.isClassMember) { |
| // Note: we set thisType regardless of whether we are building a static |
| // member, since that provides better error recovery. |
| Class cls = builder.parent.target; |
| thisType = cls.thisType; |
| } |
| var typeInferrer = library.disableTypeInference |
| ? typeInferenceEngine.createDisabledTypeInferrer() |
| : typeInferenceEngine.createLocalTypeInferrer(uri, thisType, library); |
| return new BodyBuilder(library, builder, memberScope, formalParameterScope, |
| hierarchy, coreTypes, currentClass, isInstanceMember, uri, typeInferrer) |
| ..constantExpressionRequired = builder.isConstructor && builder.isConst; |
| } |
| |
| void buildFunctionBody( |
| Token token, ProcedureBuilder builder, MemberKind kind, Token metadata) { |
| Scope typeParameterScope = builder.computeTypeParameterScope(memberScope); |
| Scope formalParameterScope = |
| builder.computeFormalParameterScope(typeParameterScope); |
| assert(typeParameterScope != null); |
| assert(formalParameterScope != null); |
| parseFunctionBody( |
| createListener(builder, typeParameterScope, builder.isInstanceMember, |
| formalParameterScope), |
| token, |
| metadata, |
| kind); |
| } |
| |
| void buildFields(int count, Token token, bool isTopLevel) { |
| List<String> names = popList(count); |
| Builder builder = lookupBuilder(token, null, names.first); |
| Token metadata = pop(); |
| // TODO(paulberry): don't re-parse the field if we've already parsed it |
| // for type inference. |
| parseFields(createListener(builder, memberScope, builder.isInstanceMember), |
| token, metadata, isTopLevel); |
| } |
| |
| @override |
| void handleInvalidMember(Token endToken) { |
| debugEvent("InvalidMember"); |
| pop(); // metadata star |
| } |
| |
| @override |
| void endMember() { |
| debugEvent("Member"); |
| checkEmpty(-1); |
| } |
| |
| @override |
| void beginClassBody(Token token) { |
| debugEvent("beginClassBody"); |
| String name = pop(); |
| Token metadata = pop(); |
| assert(currentClass == null); |
| assert(memberScope == library.scope); |
| |
| Builder classBuilder = lookupBuilder(token, null, name); |
| Class target = classBuilder.target; |
| var metadataConstants = parseMetadata(classBuilder, metadata); |
| if (metadataConstants != null) { |
| for (var metadataConstant in metadataConstants) { |
| target.addAnnotation(metadataConstant); |
| } |
| } |
| |
| currentClass = classBuilder; |
| memberScope = currentClass.scope; |
| } |
| |
| @override |
| void endClassBody(int memberCount, Token beginToken, Token endToken) { |
| debugEvent("ClassBody"); |
| currentClass = null; |
| memberScope = library.scope; |
| } |
| |
| @override |
| void endClassDeclaration(Token beginToken, Token endToken) { |
| debugEvent("ClassDeclaration"); |
| checkEmpty(beginToken.charOffset); |
| } |
| |
| @override |
| void endEnum(Token enumKeyword, Token leftBrace, int count) { |
| debugEvent("Enum"); |
| |
| discard(count); // values |
| String name = pop(); |
| Token metadata = pop(); |
| |
| Builder enumBuilder = lookupBuilder(enumKeyword, null, name); |
| Class target = enumBuilder.target; |
| var metadataConstants = parseMetadata(enumBuilder, metadata); |
| if (metadataConstants != null) { |
| for (var metadataConstant in metadataConstants) { |
| target.addAnnotation(metadataConstant); |
| } |
| } |
| |
| checkEmpty(enumKeyword.charOffset); |
| } |
| |
| @override |
| void endNamedMixinApplication(Token beginToken, Token classKeyword, |
| Token equals, Token implementsKeyword, Token endToken) { |
| debugEvent("NamedMixinApplication"); |
| |
| String name = pop(); |
| Token metadata = pop(); |
| |
| Builder classBuilder = lookupBuilder(classKeyword, null, name); |
| Class target = classBuilder.target; |
| var metadataConstants = parseMetadata(classBuilder, metadata); |
| if (metadataConstants != null) { |
| for (var metadataConstant in metadataConstants) { |
| target.addAnnotation(metadataConstant); |
| } |
| } |
| |
| checkEmpty(beginToken.charOffset); |
| } |
| |
| AsyncMarker getAsyncMarker(StackListener listener) => listener.pop(); |
| |
| /// Invokes the listener's [finishFunction] method. |
| /// |
| /// This is a separate method so that it may be overridden by a derived class |
| /// if more computation must be done before finishing the function. |
| void listenerFinishFunction( |
| StackListener listener, |
| Token token, |
| Token metadata, |
| MemberKind kind, |
| List metadataConstants, |
| dynamic formals, |
| AsyncMarker asyncModifier, |
| dynamic body) { |
| listener.finishFunction(metadataConstants, formals, asyncModifier, body); |
| } |
| |
| /// Invokes the listener's [finishFields] method. |
| /// |
| /// This is a separate method so that it may be overridden by a derived class |
| /// if more computation must be done before finishing the function. |
| void listenerFinishFields(StackListener listener, Token startToken, |
| Token metadata, bool isTopLevel) { |
| listener.finishFields(); |
| } |
| |
| void parseFunctionBody(StackListener listener, Token startToken, |
| Token metadata, MemberKind kind) { |
| Token token = startToken; |
| try { |
| Parser parser = new Parser(listener); |
| List metadataConstants; |
| if (metadata != null) { |
| parser.parseMetadataStar(parser.syntheticPreviousToken(metadata)); |
| metadataConstants = listener.pop(); |
| } |
| token = parser.parseFormalParametersOpt( |
| parser.syntheticPreviousToken(token), kind); |
| var formals = listener.pop(); |
| listener.checkEmpty(token.next.charOffset); |
| token = parser.parseInitializersOpt(token); |
| token = parser.parseAsyncModifierOpt(token); |
| AsyncMarker asyncModifier = getAsyncMarker(listener) ?? AsyncMarker.Sync; |
| bool isExpression = false; |
| bool allowAbstract = asyncModifier == AsyncMarker.Sync; |
| parser.parseFunctionBody(token, isExpression, allowAbstract); |
| var body = listener.pop(); |
| listener.checkEmpty(token.charOffset); |
| listenerFinishFunction(listener, startToken, metadata, kind, |
| metadataConstants, formals, asyncModifier, body); |
| } on deprecated_InputError { |
| rethrow; |
| } catch (e, s) { |
| throw new Crash(uri, token.charOffset, e, s); |
| } |
| } |
| |
| void parseFields(StackListener listener, Token startToken, Token metadata, |
| bool isTopLevel) { |
| Token token = startToken; |
| Parser parser = new Parser(listener); |
| if (isTopLevel) { |
| token = parser.parseTopLevelMember(metadata ?? token); |
| } else { |
| token = parser.parseClassMember(metadata ?? token).next; |
| } |
| listenerFinishFields(listener, startToken, metadata, isTopLevel); |
| listener.checkEmpty(token.charOffset); |
| } |
| |
| Builder lookupBuilder(Token token, Token getOrSet, String name) { |
| // TODO(ahe): Can I move this to Scope or ScopeBuilder? |
| Builder builder; |
| if (currentClass != null) { |
| if (uri != currentClass.fileUri) { |
| unexpected("$uri", "${currentClass.fileUri}", currentClass.charOffset, |
| currentClass.fileUri); |
| } |
| |
| if (getOrSet != null && optional("set", getOrSet)) { |
| builder = currentClass.scope.setters[name]; |
| } else { |
| builder = currentClass.scope.local[name]; |
| } |
| } else if (getOrSet != null && optional("set", getOrSet)) { |
| builder = library.scope.setters[name]; |
| } else { |
| builder = library.scopeBuilder[name]; |
| } |
| checkBuilder(token, builder, name); |
| return builder; |
| } |
| |
| Builder lookupConstructor(Token token, Object nameOrQualified) { |
| assert(currentClass != null); |
| Builder builder; |
| String name; |
| String suffix; |
| if (nameOrQualified is QualifiedName) { |
| name = nameOrQualified.prefix; |
| suffix = nameOrQualified.suffix; |
| } else { |
| name = nameOrQualified; |
| suffix = name == currentClass.name ? "" : name; |
| } |
| builder = currentClass.constructors.local[suffix]; |
| checkBuilder(token, builder, nameOrQualified); |
| return builder; |
| } |
| |
| void checkBuilder(Token token, Builder builder, Object name) { |
| if (builder == null) { |
| internalProblem(templateInternalProblemNotFound.withArguments("$name"), |
| token.charOffset, uri); |
| } |
| if (builder.next != null) { |
| deprecated_inputError(uri, token.charOffset, "Duplicated name: $name"); |
| } |
| if (uri != builder.fileUri) { |
| unexpected( |
| "$uri", "${builder.fileUri}", builder.charOffset, builder.fileUri); |
| } |
| } |
| |
| @override |
| void addCompileTimeError(Message message, int charOffset, int length) { |
| library.addCompileTimeError(message, charOffset, length, uri); |
| } |
| |
| void addProblem(Message message, int charOffset, int length) { |
| library.addProblem(message, charOffset, length, uri); |
| } |
| |
| @override |
| void debugEvent(String name) { |
| // printEvent('DietListener: $name'); |
| } |
| |
| /// If the [metadata] is not `null`, return the parsed metadata [Expression]s. |
| /// Otherwise, return `null`. |
| List<Expression> parseMetadata(ModifierBuilder builder, Token metadata) { |
| if (metadata != null) { |
| var listener = createListener(builder, memberScope, false); |
| var parser = new Parser(listener); |
| parser.parseMetadataStar(parser.syntheticPreviousToken(metadata)); |
| return listener.finishMetadata(); |
| } |
| return null; |
| } |
| } |