| // This code was auto-generated, is not intended to be edited, and is subject to |
| // significant change. Please see the README file for more information. |
| |
| library engine.resolver; |
| |
| import 'dart:collection'; |
| import 'java_core.dart'; |
| import 'java_engine.dart'; |
| import 'source.dart'; |
| import 'error.dart'; |
| import 'scanner.dart' show Keyword, TokenType, Token, KeywordToken, StringToken; |
| import 'utilities_dart.dart'; |
| import 'ast.dart'; |
| import 'element.dart' hide HideCombinator, ShowCombinator; |
| import 'engine.dart'; |
| import 'element.dart' as __imp_combi show HideCombinator, ShowCombinator; |
| |
| /** |
| * Instances of the class {@code CompilationUnitBuilder} build an element model for a single |
| * compilation unit. |
| */ |
| class CompilationUnitBuilder { |
| /** |
| * The analysis context in which the element model will be built. |
| */ |
| AnalysisContextImpl _analysisContext; |
| /** |
| * The listener to which errors will be reported. |
| */ |
| AnalysisErrorListener _errorListener; |
| /** |
| * Initialize a newly created compilation unit element builder. |
| * @param analysisContext the analysis context in which the element model will be built |
| * @param errorListener the listener to which errors will be reported |
| */ |
| CompilationUnitBuilder(AnalysisContextImpl analysisContext, AnalysisErrorListener errorListener) { |
| this._analysisContext = analysisContext; |
| this._errorListener = errorListener; |
| } |
| /** |
| * Build the compilation unit element for the given source. |
| * @param source the source describing the compilation unit |
| * @return the compilation unit element that was built |
| * @throws AnalysisException if the analysis could not be performed |
| */ |
| CompilationUnitElementImpl buildCompilationUnit(Source source) => buildCompilationUnit2(source, _analysisContext.parse2(source, _errorListener)); |
| /** |
| * Build the compilation unit element for the given source. |
| * @param source the source describing the compilation unit |
| * @param unit the AST structure representing the compilation unit |
| * @return the compilation unit element that was built |
| * @throws AnalysisException if the analysis could not be performed |
| */ |
| CompilationUnitElementImpl buildCompilationUnit2(Source source11, CompilationUnit unit) { |
| ElementHolder holder = new ElementHolder(); |
| ElementBuilder builder = new ElementBuilder(holder); |
| unit.accept(builder); |
| CompilationUnitElementImpl element = new CompilationUnitElementImpl(source11.shortName); |
| element.accessors = holder.accessors; |
| element.functions = holder.functions; |
| element.source = source11; |
| element.typeAliases = holder.typeAliases; |
| element.types = holder.types; |
| element.variables = holder.variables; |
| unit.element = element; |
| return element; |
| } |
| } |
| /** |
| * Instances of the class {@code ElementBuilder} traverse an AST structure and build the element |
| * model representing the AST structure. |
| */ |
| class ElementBuilder extends RecursiveASTVisitor<Object> { |
| /** |
| * The element holder associated with the element that is currently being built. |
| */ |
| ElementHolder _currentHolder; |
| /** |
| * A flag indicating whether a variable declaration is in the context of a field declaration. |
| */ |
| bool _inFieldContext = false; |
| /** |
| * Initialize a newly created element builder to build the elements for a compilation unit. |
| * @param initialHolder the element holder associated with the compilation unit being built |
| */ |
| ElementBuilder(ElementHolder initialHolder) { |
| _currentHolder = initialHolder; |
| } |
| Object visitCatchClause(CatchClause node) { |
| SimpleIdentifier exceptionParameter2 = node.exceptionParameter; |
| if (exceptionParameter2 != null) { |
| VariableElementImpl exception = new VariableElementImpl.con1(exceptionParameter2); |
| _currentHolder.addVariable(exception); |
| exceptionParameter2.element = exception; |
| SimpleIdentifier stackTraceParameter2 = node.stackTraceParameter; |
| if (stackTraceParameter2 != null) { |
| VariableElementImpl stackTrace = new VariableElementImpl.con1(stackTraceParameter2); |
| _currentHolder.addVariable(stackTrace); |
| stackTraceParameter2.element = stackTrace; |
| } |
| } |
| node.visitChildren(this); |
| return null; |
| } |
| Object visitClassDeclaration(ClassDeclaration node) { |
| ElementHolder holder = new ElementHolder(); |
| visitChildren(holder, node); |
| SimpleIdentifier className = node.name; |
| ClassElementImpl element = new ClassElementImpl(className); |
| List<ConstructorElement> constructors3 = holder.constructors; |
| if (constructors3.length == 0) { |
| ConstructorElementImpl constructor = new ConstructorElementImpl(null); |
| constructor.synthetic = true; |
| FunctionTypeImpl type = new FunctionTypeImpl.con1(constructor); |
| type.returnType = element.type; |
| constructor.type = type; |
| constructors3 = <ConstructorElement> [constructor]; |
| } |
| element.abstract = node.abstractKeyword != null; |
| element.accessors = holder.accessors; |
| element.constructors = constructors3; |
| element.fields = holder.fields; |
| element.methods = holder.methods; |
| List<TypeVariableElement> typeVariables4 = holder.typeVariables; |
| element.typeVariables = typeVariables4; |
| InterfaceTypeImpl interfaceType = new InterfaceTypeImpl.con1(element); |
| int typeVariableCount = typeVariables4.length; |
| List<Type2> typeArguments = new List<Type2>.fixedLength(typeVariableCount); |
| for (int i = 0; i < typeVariableCount; i++) { |
| TypeVariableElementImpl typeVariable = (typeVariables4[i] as TypeVariableElementImpl); |
| TypeVariableTypeImpl typeArgument = new TypeVariableTypeImpl(typeVariable); |
| typeVariable.type = typeArgument; |
| typeArguments[i] = typeArgument; |
| } |
| interfaceType.typeArguments = typeArguments; |
| element.type = interfaceType; |
| _currentHolder.addType(element); |
| className.element = element; |
| return null; |
| } |
| Object visitClassTypeAlias(ClassTypeAlias node) { |
| ElementHolder holder = new ElementHolder(); |
| visitChildren(holder, node); |
| SimpleIdentifier className = node.name; |
| ClassElementImpl element = new ClassElementImpl(className); |
| element.abstract = node.abstractKeyword != null; |
| List<TypeVariableElement> typeVariables5 = holder.typeVariables; |
| element.typeVariables = typeVariables5; |
| InterfaceTypeImpl interfaceType = new InterfaceTypeImpl.con1(element); |
| int typeVariableCount = typeVariables5.length; |
| List<Type2> typeArguments = new List<Type2>.fixedLength(typeVariableCount); |
| for (int i = 0; i < typeVariableCount; i++) { |
| TypeVariableElementImpl typeVariable = (typeVariables5[i] as TypeVariableElementImpl); |
| TypeVariableTypeImpl typeArgument = new TypeVariableTypeImpl(typeVariable); |
| typeVariable.type = typeArgument; |
| typeArguments[i] = typeArgument; |
| } |
| interfaceType.typeArguments = typeArguments; |
| element.type = interfaceType; |
| _currentHolder.addType(element); |
| className.element = element; |
| return null; |
| } |
| Object visitConstructorDeclaration(ConstructorDeclaration node) { |
| ElementHolder holder = new ElementHolder(); |
| visitChildren(holder, node); |
| SimpleIdentifier constructorName = node.name; |
| ConstructorElementImpl element = new ConstructorElementImpl(constructorName); |
| if (node.factoryKeyword != null) { |
| element.factory = true; |
| } |
| element.functions = holder.functions; |
| element.labels = holder.labels; |
| element.localVariables = holder.variables; |
| element.parameters = holder.parameters; |
| _currentHolder.addConstructor(element); |
| node.element = element; |
| if (constructorName != null) { |
| constructorName.element = element; |
| } |
| return null; |
| } |
| Object visitDefaultFormalParameter(DefaultFormalParameter node) { |
| ElementHolder holder = new ElementHolder(); |
| visitChildren(holder, node.defaultValue); |
| FunctionElementImpl initializer = new FunctionElementImpl(); |
| initializer.functions = holder.functions; |
| initializer.labels = holder.labels; |
| initializer.localVariables = holder.variables; |
| initializer.parameters = holder.parameters; |
| SimpleIdentifier parameterName = node.parameter.identifier; |
| ParameterElementImpl parameter = new ParameterElementImpl(parameterName); |
| parameter.const2 = node.isConst(); |
| parameter.final2 = node.isFinal(); |
| parameter.initializer = initializer; |
| parameter.parameterKind = node.kind; |
| _currentHolder.addParameter(parameter); |
| parameterName.element = parameter; |
| node.parameter.accept(this); |
| return null; |
| } |
| Object visitFieldDeclaration(FieldDeclaration node) { |
| bool wasInField = _inFieldContext; |
| _inFieldContext = true; |
| try { |
| node.visitChildren(this); |
| } finally { |
| _inFieldContext = wasInField; |
| } |
| return null; |
| } |
| Object visitFieldFormalParameter(FieldFormalParameter node) { |
| if (node.parent is! DefaultFormalParameter) { |
| SimpleIdentifier parameterName = node.identifier; |
| ParameterElementImpl parameter = new ParameterElementImpl(parameterName); |
| parameter.const2 = node.isConst(); |
| parameter.initializingFormal = true; |
| parameter.final2 = node.isFinal(); |
| parameter.parameterKind = node.kind; |
| _currentHolder.addParameter(parameter); |
| parameterName.element = parameter; |
| } |
| node.visitChildren(this); |
| return null; |
| } |
| Object visitFunctionDeclaration(FunctionDeclaration node) { |
| ElementHolder holder = new ElementHolder(); |
| visitChildren(holder, node); |
| SimpleIdentifier functionName = node.name; |
| FunctionElementImpl element = new FunctionElementImpl.con1(functionName); |
| element.functions = holder.functions; |
| element.labels = holder.labels; |
| element.localVariables = holder.variables; |
| element.parameters = holder.parameters; |
| _currentHolder.addFunction(element); |
| functionName.element = element; |
| return null; |
| } |
| Object visitFunctionExpression(FunctionExpression node) { |
| ElementHolder holder = new ElementHolder(); |
| visitChildren(holder, node); |
| SimpleIdentifier functionName = null; |
| FunctionElementImpl element = new FunctionElementImpl.con1(functionName); |
| element.functions = holder.functions; |
| element.labels = holder.labels; |
| element.localVariables = holder.variables; |
| element.parameters = holder.parameters; |
| FunctionTypeImpl type = new FunctionTypeImpl.con1(element); |
| element.type = type; |
| _currentHolder.addFunction(element); |
| node.element = element; |
| return null; |
| } |
| Object visitFunctionTypeAlias(FunctionTypeAlias node) { |
| ElementHolder holder = new ElementHolder(); |
| visitChildren(holder, node); |
| SimpleIdentifier aliasName = node.name; |
| List<ParameterElement> parameters10 = holder.parameters; |
| TypeAliasElementImpl element = new TypeAliasElementImpl(aliasName); |
| element.parameters = parameters10; |
| element.typeVariables = holder.typeVariables; |
| FunctionTypeImpl type = new FunctionTypeImpl.con2(element); |
| element.type = type; |
| _currentHolder.addTypeAlias(element); |
| aliasName.element = element; |
| return null; |
| } |
| Object visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) { |
| if (node.parent is! DefaultFormalParameter) { |
| SimpleIdentifier parameterName = node.identifier; |
| ParameterElementImpl parameter = new ParameterElementImpl(parameterName); |
| parameter.parameterKind = node.kind; |
| _currentHolder.addParameter(parameter); |
| parameterName.element = parameter; |
| } |
| visitChildren(new ElementHolder(), node); |
| return null; |
| } |
| Object visitLabeledStatement(LabeledStatement node) { |
| bool onSwitchStatement = node.statement is SwitchStatement; |
| for (Label label in node.labels) { |
| SimpleIdentifier labelName = label.label; |
| LabelElementImpl element = new LabelElementImpl(labelName, onSwitchStatement, false); |
| _currentHolder.addLabel(element); |
| labelName.element = element; |
| } |
| node.visitChildren(this); |
| return null; |
| } |
| Object visitMethodDeclaration(MethodDeclaration node) { |
| ElementHolder holder = new ElementHolder(); |
| visitChildren(holder, node); |
| Token property = node.propertyKeyword; |
| if (property == null) { |
| Identifier methodName = node.name; |
| String nameOfMethod = methodName.name; |
| if (nameOfMethod == TokenType.MINUS.lexeme && node.parameters.parameters.length == 0) { |
| nameOfMethod = "unary-"; |
| } |
| MethodElementImpl element = new MethodElementImpl.con2(nameOfMethod, methodName.offset); |
| Token keyword = node.modifierKeyword; |
| element.abstract = matches(keyword, Keyword.ABSTRACT); |
| element.functions = holder.functions; |
| element.labels = holder.labels; |
| element.localVariables = holder.variables; |
| element.parameters = holder.parameters; |
| element.static = matches(keyword, Keyword.STATIC); |
| _currentHolder.addMethod(element); |
| methodName.element = element; |
| } else { |
| Identifier propertyNameNode = node.name; |
| String propertyName = propertyNameNode.name; |
| FieldElementImpl field = (_currentHolder.getField(propertyName) as FieldElementImpl); |
| if (field == null) { |
| field = new FieldElementImpl.con2(node.name.name); |
| field.final2 = true; |
| field.static = matches(node.modifierKeyword, Keyword.STATIC); |
| _currentHolder.addField(field); |
| } |
| if (matches(property, Keyword.GET)) { |
| PropertyAccessorElementImpl getter = new PropertyAccessorElementImpl.con2(propertyNameNode); |
| getter.functions = holder.functions; |
| getter.labels = holder.labels; |
| getter.localVariables = holder.variables; |
| getter.field = field; |
| getter.getter = true; |
| field.getter = getter; |
| _currentHolder.addAccessor(getter); |
| propertyNameNode.element = getter; |
| } else { |
| PropertyAccessorElementImpl setter = new PropertyAccessorElementImpl.con2(propertyNameNode); |
| setter.functions = holder.functions; |
| setter.labels = holder.labels; |
| setter.localVariables = holder.variables; |
| setter.parameters = holder.parameters; |
| setter.field = field; |
| setter.setter = true; |
| field.setter = setter; |
| field.final2 = false; |
| _currentHolder.addAccessor(setter); |
| propertyNameNode.element = setter; |
| } |
| } |
| return null; |
| } |
| Object visitSimpleFormalParameter(SimpleFormalParameter node) { |
| if (node.parent is! DefaultFormalParameter) { |
| SimpleIdentifier parameterName = node.identifier; |
| ParameterElementImpl parameter = new ParameterElementImpl(parameterName); |
| parameter.const2 = node.isConst(); |
| parameter.final2 = node.isFinal(); |
| parameter.parameterKind = node.kind; |
| _currentHolder.addParameter(parameter); |
| parameterName.element = parameter; |
| } |
| node.visitChildren(this); |
| return null; |
| } |
| Object visitSwitchCase(SwitchCase node) { |
| for (Label label in node.labels) { |
| SimpleIdentifier labelName = label.label; |
| LabelElementImpl element = new LabelElementImpl(labelName, false, true); |
| _currentHolder.addLabel(element); |
| labelName.element = element; |
| } |
| node.visitChildren(this); |
| return null; |
| } |
| Object visitSwitchDefault(SwitchDefault node) { |
| for (Label label in node.labels) { |
| SimpleIdentifier labelName = label.label; |
| LabelElementImpl element = new LabelElementImpl(labelName, false, true); |
| _currentHolder.addLabel(element); |
| labelName.element = element; |
| } |
| node.visitChildren(this); |
| return null; |
| } |
| Object visitTypeParameter(TypeParameter node) { |
| SimpleIdentifier parameterName = node.name; |
| TypeVariableElementImpl element = new TypeVariableElementImpl(parameterName); |
| TypeVariableTypeImpl type = new TypeVariableTypeImpl(element); |
| element.type = type; |
| _currentHolder.addTypeVariable(element); |
| parameterName.element = element; |
| node.visitChildren(this); |
| return null; |
| } |
| Object visitVariableDeclaration(VariableDeclaration node) { |
| VariableElementImpl element; |
| if (_inFieldContext) { |
| SimpleIdentifier fieldName = node.name; |
| FieldElementImpl field = new FieldElementImpl.con1(fieldName); |
| element = field; |
| _currentHolder.addField(field); |
| fieldName.element = field; |
| } else { |
| SimpleIdentifier variableName = node.name; |
| element = new VariableElementImpl.con1(variableName); |
| _currentHolder.addVariable(element); |
| variableName.element = element; |
| } |
| Token keyword26 = ((node.parent as VariableDeclarationList)).keyword; |
| bool isFinal = matches(keyword26, Keyword.FINAL); |
| element.const2 = matches(keyword26, Keyword.CONST); |
| element.final2 = isFinal; |
| if (node.initializer != null) { |
| ElementHolder holder = new ElementHolder(); |
| bool wasInFieldContext = _inFieldContext; |
| _inFieldContext = false; |
| try { |
| visitChildren(holder, node.initializer); |
| } finally { |
| _inFieldContext = wasInFieldContext; |
| } |
| FunctionElementImpl initializer = new FunctionElementImpl(); |
| initializer.functions = holder.functions; |
| initializer.labels = holder.labels; |
| initializer.localVariables = holder.variables; |
| initializer.synthetic = true; |
| element.initializer = initializer; |
| } |
| if (_inFieldContext) { |
| FieldElementImpl field = (element as FieldElementImpl); |
| PropertyAccessorElementImpl getter = new PropertyAccessorElementImpl.con1(field); |
| getter.getter = true; |
| _currentHolder.addAccessor(getter); |
| field.getter = getter; |
| if (!isFinal) { |
| PropertyAccessorElementImpl setter = new PropertyAccessorElementImpl.con1(field); |
| setter.setter = true; |
| _currentHolder.addAccessor(setter); |
| field.setter = setter; |
| } |
| field.static = matches(((node.parent.parent as FieldDeclaration)).keyword, Keyword.STATIC); |
| } |
| node.visitChildren(this); |
| return null; |
| } |
| /** |
| * Return {@code true} if the given token is a token for the given keyword. |
| * @param token the token being tested |
| * @param keyword the keyword being tested for |
| * @return {@code true} if the given token is a token for the given keyword |
| */ |
| bool matches(Token token, Keyword keyword34) => token != null && identical(token.type, TokenType.KEYWORD) && identical(((token as KeywordToken)).keyword, keyword34); |
| /** |
| * Make the given holder be the current holder while visiting the children of the given node. |
| * @param holder the holder that will gather elements that are built while visiting the children |
| * @param node the node whose children are to be visited |
| */ |
| void visitChildren(ElementHolder holder, ASTNode node) { |
| if (node != null) { |
| ElementHolder previousHolder = _currentHolder; |
| _currentHolder = holder; |
| try { |
| node.visitChildren(this); |
| } finally { |
| _currentHolder = previousHolder; |
| } |
| } |
| } |
| } |
| /** |
| * Instances of the class {@code ElementHolder} hold on to elements created while traversing an AST |
| * structure so that they can be accessed when creating their enclosing element. |
| */ |
| class ElementHolder { |
| List<PropertyAccessorElement> _accessors = new List<PropertyAccessorElement>(); |
| List<ConstructorElement> _constructors = new List<ConstructorElement>(); |
| List<FieldElement> _fields = new List<FieldElement>(); |
| List<FunctionElement> _functions = new List<FunctionElement>(); |
| List<LabelElement> _labels = new List<LabelElement>(); |
| List<MethodElement> _methods = new List<MethodElement>(); |
| List<TypeAliasElement> _typeAliases = new List<TypeAliasElement>(); |
| List<ParameterElement> _parameters = new List<ParameterElement>(); |
| List<ClassElement> _types = new List<ClassElement>(); |
| List<TypeVariableElement> _typeVariables = new List<TypeVariableElement>(); |
| List<VariableElement> _variables = new List<VariableElement>(); |
| /** |
| * Initialize a newly created element holder. |
| */ |
| ElementHolder() : super() { |
| } |
| void addAccessor(PropertyAccessorElement element) { |
| _accessors.add(element); |
| } |
| void addConstructor(ConstructorElement element) { |
| _constructors.add(element); |
| } |
| void addField(FieldElement element) { |
| _fields.add(element); |
| } |
| void addFunction(FunctionElement element) { |
| _functions.add(element); |
| } |
| void addLabel(LabelElement element) { |
| _labels.add(element); |
| } |
| void addMethod(MethodElement element) { |
| _methods.add(element); |
| } |
| void addParameter(ParameterElement element) { |
| _parameters.add(element); |
| } |
| void addType(ClassElement element) { |
| _types.add(element); |
| } |
| void addTypeAlias(TypeAliasElement element) { |
| _typeAliases.add(element); |
| } |
| void addTypeVariable(TypeVariableElement element) { |
| _typeVariables.add(element); |
| } |
| void addVariable(VariableElement element) { |
| _variables.add(element); |
| } |
| List<PropertyAccessorElement> get accessors => new List.from(_accessors); |
| List<ConstructorElement> get constructors => new List.from(_constructors); |
| FieldElement getField(String fieldName) { |
| for (FieldElement field in _fields) { |
| if (field.name == fieldName) { |
| return field; |
| } |
| } |
| return null; |
| } |
| List<FieldElement> get fields => new List.from(_fields); |
| List<FunctionElement> get functions => new List.from(_functions); |
| List<LabelElement> get labels => new List.from(_labels); |
| List<MethodElement> get methods => new List.from(_methods); |
| List<ParameterElement> get parameters => new List.from(_parameters); |
| List<TypeAliasElement> get typeAliases => new List.from(_typeAliases); |
| List<ClassElement> get types => new List.from(_types); |
| List<TypeVariableElement> get typeVariables => new List.from(_typeVariables); |
| List<VariableElement> get variables => new List.from(_variables); |
| } |
| /** |
| * Instances of the class {@code ElementResolver} are used by instances of {@link ResolverVisitor}to resolve references within the AST structure to the elements being referenced. The requirements |
| * for the element resolver are: |
| * <ol> |
| * <li>Every {@link SimpleIdentifier} should be resolved to the element to which it refers. |
| * Specifically: |
| * <ul> |
| * <li>An identifier within the declaration of that name should resolve to the element being |
| * declared.</li> |
| * <li>An identifier denoting a prefix should resolve to the element representing the import that |
| * defines the prefix (an {@link ImportElement}).</li> |
| * <li>An identifier denoting a variable should resolve to the element representing the variable (a{@link VariableElement}).</li> |
| * <li>An identifier denoting a parameter should resolve to the element representing the parameter |
| * (a {@link ParameterElement}).</li> |
| * <li>An identifier denoting a field should resolve to the element representing the getter or |
| * setter being invoked (a {@link PropertyAccessorElement}).</li> |
| * <li>An identifier denoting the name of a method or function being invoked should resolve to the |
| * element representing the method or function (a {@link ExecutableElement}).</li> |
| * <li>An identifier denoting a label should resolve to the element representing the label (a{@link LabelElement}).</li> |
| * </ul> |
| * The identifiers within directives are exceptions to this rule and are covered below.</li> |
| * <li>Every node containing a token representing an operator that can be overridden ({@link BinaryExpression}, {@link PrefixExpression}, {@link PostfixExpression}) should resolve to |
| * the element representing the method invoked by that operator (a {@link MethodElement}).</li> |
| * <li>Every {@link FunctionExpressionInvocation} should resolve to the element representing the |
| * function being invoked (a {@link FunctionElement}). This will be the same element as that to |
| * which the name is resolved if the function has a name, but is provided for those cases where an |
| * unnamed function is being invoked.</li> |
| * <li>Every {@link LibraryDirective} and {@link PartOfDirective} should resolve to the element |
| * representing the library being specified by the directive (a {@link LibraryElement}) unless, in |
| * the case of a part-of directive, the specified library does not exist.</li> |
| * <li>Every {@link ImportDirective} and {@link ExportDirective} should resolve to the element |
| * representing the library being specified by the directive unless the specified library does not |
| * exist (a {@link LibraryElement}).</li> |
| * <li>The identifier representing the prefix in an {@link ImportDirective} should resolve to the |
| * element representing the prefix (a {@link PrefixElement}).</li> |
| * <li>The identifiers in the hide and show combinators in {@link ImportDirective}s and{@link ExportDirective}s should resolve to the elements that are being hidden or shown, |
| * respectively, unless those names are not defined in the specified library (or the specified |
| * library does not exist).</li> |
| * <li>Every {@link PartDirective} should resolve to the element representing the compilation unit |
| * being specified by the string unless the specified compilation unit does not exist (a{@link CompilationUnitElement}).</li> |
| * </ol> |
| * Note that AST nodes that would represent elements that are not defined are not resolved to |
| * anything. This includes such things as references to undeclared variables (which is an error) and |
| * names in hide and show combinators that are not defined in the imported library (which is not an |
| * error). |
| */ |
| class ElementResolver extends SimpleASTVisitor<Object> { |
| /** |
| * The resolver driving this participant. |
| */ |
| ResolverVisitor _resolver; |
| /** |
| * Initialize a newly created visitor to resolve the nodes in a compilation unit. |
| * @param resolver the resolver driving this participant |
| */ |
| ElementResolver(ResolverVisitor resolver) { |
| this._resolver = resolver; |
| } |
| Object visitAssignmentExpression(AssignmentExpression node) { |
| TokenType operator7 = node.operator.type; |
| if (operator7 != TokenType.EQ) { |
| operator7 = operatorFromCompoundAssignment(operator7); |
| Expression leftNode = node.leftHandSide; |
| if (leftNode != null) { |
| Type2 leftType = leftNode.staticType; |
| if (leftType != null) { |
| Element leftElement = leftType.element; |
| if (leftElement != null) { |
| MethodElement method = lookUpMethod(leftElement, operator7.lexeme, 1, []); |
| if (method != null) { |
| node.element = method; |
| } else { |
| } |
| } |
| } |
| } |
| } |
| return null; |
| } |
| Object visitBinaryExpression(BinaryExpression node) { |
| Token operator8 = node.operator; |
| if (operator8.isUserDefinableOperator()) { |
| Type2 leftType = getType(node.leftOperand); |
| Element leftTypeElement; |
| if (leftType == null) { |
| return null; |
| } else if (leftType is FunctionType) { |
| leftTypeElement = _resolver.typeProvider.functionType.element; |
| } else { |
| leftTypeElement = leftType.element; |
| } |
| String methodName = operator8.lexeme; |
| MethodElement member = lookUpMethod(leftTypeElement, methodName, 1, []); |
| if (member == null) { |
| _resolver.reportError2(ResolverErrorCode.CANNOT_BE_RESOLVED, operator8, [methodName]); |
| } else { |
| node.element = member; |
| } |
| } |
| return null; |
| } |
| Object visitBreakStatement(BreakStatement node) { |
| SimpleIdentifier labelNode = node.label; |
| LabelElementImpl labelElement = lookupLabel(node, labelNode); |
| if (labelElement != null && labelElement.isOnSwitchMember()) { |
| _resolver.reportError(ResolverErrorCode.BREAK_LABEL_ON_SWITCH_MEMBER, labelNode, []); |
| } |
| return null; |
| } |
| Object visitConstructorName(ConstructorName node) { |
| Type2 type10 = node.type.type; |
| if (type10 is! InterfaceType) { |
| return null; |
| } |
| ClassElement classElement = ((type10 as InterfaceType)).element; |
| ConstructorElement constructor; |
| SimpleIdentifier name14 = node.name; |
| if (name14 == null) { |
| constructor = classElement.unnamedConstructor; |
| } else { |
| constructor = classElement.getNamedConstructor(name14.name); |
| name14.element = constructor; |
| } |
| node.element = constructor; |
| return null; |
| } |
| Object visitContinueStatement(ContinueStatement node) { |
| SimpleIdentifier labelNode = node.label; |
| LabelElementImpl labelElement = lookupLabel(node, labelNode); |
| if (labelElement != null && labelElement.isOnSwitchStatement()) { |
| _resolver.reportError(ResolverErrorCode.CONTINUE_LABEL_ON_SWITCH, labelNode, []); |
| } |
| return null; |
| } |
| Object visitFunctionExpressionInvocation(FunctionExpressionInvocation node) => null; |
| Object visitImportDirective(ImportDirective node) { |
| SimpleIdentifier prefixNode = node.prefix; |
| if (prefixNode != null) { |
| String prefixName = prefixNode.name; |
| for (PrefixElement prefixElement in _resolver.definingLibrary.prefixes) { |
| if (prefixElement.name == prefixName) { |
| recordResolution(prefixNode, prefixElement); |
| } |
| return null; |
| } |
| } |
| return null; |
| } |
| Object visitIndexExpression(IndexExpression node) { |
| Type2 arrayType = getType(node.array); |
| if (arrayType == null) { |
| return null; |
| } |
| Element arrayTypeElement = arrayType.element; |
| String operator; |
| if (node.inSetterContext()) { |
| operator = TokenType.INDEX_EQ.lexeme; |
| } else { |
| operator = TokenType.INDEX.lexeme; |
| } |
| MethodElement member = lookUpMethod(arrayTypeElement, operator, 1, []); |
| if (member == null) { |
| _resolver.reportError(ResolverErrorCode.CANNOT_BE_RESOLVED, node, [operator]); |
| } else { |
| node.element = member; |
| } |
| return null; |
| } |
| Object visitInstanceCreationExpression(InstanceCreationExpression node) { |
| node.element = node.constructorName.element; |
| return null; |
| } |
| Object visitLibraryIdentifier(LibraryIdentifier node) => null; |
| Object visitMethodInvocation(MethodInvocation node) { |
| SimpleIdentifier methodName2 = node.methodName; |
| Expression target4 = node.target; |
| Element element; |
| if (target4 == null) { |
| element = _resolver.nameScope.lookup(methodName2, _resolver.definingLibrary); |
| if (element == null) { |
| element = lookUpMethod(_resolver.enclosingClass, methodName2.name, -1, []); |
| } |
| } else { |
| Type2 targetType = getType(target4); |
| if (targetType is InterfaceType) { |
| int parameterCount = 0; |
| List<String> parameterNames = new List<String>(); |
| ArgumentList argumentList10 = node.argumentList; |
| for (Expression argument in argumentList10.arguments) { |
| if (argument is NamedExpression) { |
| parameterNames.add(((argument as NamedExpression)).name.label.name); |
| } else { |
| parameterCount++; |
| } |
| } |
| element = lookUpMethod(targetType.element, methodName2.name, parameterCount, new List.from(parameterNames)); |
| } else if (target4 is SimpleIdentifier) { |
| Element targetElement = ((target4 as SimpleIdentifier)).element; |
| if (targetElement is PrefixElement) { |
| String name9 = "${((target4 as SimpleIdentifier)).name}.${methodName2}"; |
| Identifier functionName = new Identifier_2(name9); |
| element = _resolver.nameScope.lookup(functionName, _resolver.definingLibrary); |
| } else { |
| return null; |
| } |
| } else { |
| return null; |
| } |
| } |
| ExecutableElement invokedMethod = null; |
| if (element is ExecutableElement) { |
| invokedMethod = (element as ExecutableElement); |
| } else if (element is FieldElement) { |
| } else { |
| return null; |
| } |
| if (invokedMethod == null) { |
| return null; |
| } |
| recordResolution(methodName2, invokedMethod); |
| return null; |
| } |
| Object visitPostfixExpression(PostfixExpression node) { |
| Token operator9 = node.operator; |
| if (operator9.isUserDefinableOperator()) { |
| Type2 operandType = getType(node.operand); |
| if (operandType == null) { |
| return null; |
| } |
| Element operandTypeElement = operandType.element; |
| String methodName; |
| if (identical(operator9.type, TokenType.PLUS_PLUS)) { |
| methodName = TokenType.PLUS.lexeme; |
| } else { |
| methodName = TokenType.MINUS.lexeme; |
| } |
| MethodElement member = lookUpMethod(operandTypeElement, methodName, 1, []); |
| if (member == null) { |
| _resolver.reportError2(ResolverErrorCode.CANNOT_BE_RESOLVED, operator9, [methodName]); |
| } else { |
| node.element = member; |
| } |
| } |
| return null; |
| } |
| Object visitPrefixedIdentifier(PrefixedIdentifier node) { |
| SimpleIdentifier prefix5 = node.prefix; |
| SimpleIdentifier identifier10 = node.identifier; |
| Element prefixElement = prefix5.element; |
| if (prefixElement is PrefixElement) { |
| Element element = _resolver.nameScope.lookup(node, _resolver.definingLibrary); |
| if (element == null) { |
| return null; |
| } |
| recordResolution(identifier10, element); |
| recordResolution(node, element); |
| return null; |
| } |
| if (prefixElement is ClassElement) { |
| Element memberElement; |
| if (node.identifier.inSetterContext()) { |
| memberElement = lookUpSetterInType((prefixElement as ClassElement), identifier10.name); |
| } else { |
| memberElement = lookUpGetterInType((prefixElement as ClassElement), identifier10.name); |
| } |
| if (memberElement == null) { |
| MethodElement methodElement = lookUpMethod(prefixElement, identifier10.name, -1, []); |
| if (methodElement != null) { |
| recordResolution(identifier10, methodElement); |
| recordResolution(node, methodElement); |
| return null; |
| } |
| } |
| if (memberElement == null) { |
| _resolver.reportError(ResolverErrorCode.CANNOT_BE_RESOLVED, identifier10, [identifier10.name]); |
| } else { |
| recordResolution(identifier10, memberElement); |
| recordResolution(node, memberElement); |
| } |
| return null; |
| } |
| Element variableType; |
| if (prefixElement is PropertyAccessorElement) { |
| PropertyAccessorElement accessor = (prefixElement as PropertyAccessorElement); |
| if (accessor.isGetter()) { |
| variableType = accessor.type.returnType.element; |
| } else { |
| variableType = accessor.type.normalParameterTypes[0].element; |
| } |
| } else if (prefixElement is VariableElement) { |
| variableType = ((prefixElement as VariableElement)).type.element; |
| } else { |
| return null; |
| } |
| PropertyAccessorElement memberElement; |
| if (node.identifier.inGetterContext()) { |
| memberElement = lookUpGetter(variableType, identifier10.name); |
| } else { |
| memberElement = lookUpSetter(variableType, identifier10.name); |
| } |
| if (memberElement == null) { |
| MethodElement methodElement = lookUpMethod(variableType, identifier10.name, -1, []); |
| if (methodElement != null) { |
| recordResolution(identifier10, methodElement); |
| recordResolution(node, methodElement); |
| return null; |
| } |
| } |
| if (memberElement == null) { |
| _resolver.reportError(ResolverErrorCode.CANNOT_BE_RESOLVED, identifier10, [identifier10.name]); |
| } else { |
| recordResolution(identifier10, memberElement); |
| recordResolution(node, memberElement); |
| } |
| return null; |
| } |
| Object visitPrefixExpression(PrefixExpression node) { |
| Token operator10 = node.operator; |
| TokenType operatorType = operator10.type; |
| if (operatorType.isUserDefinableOperator() || identical(operatorType, TokenType.PLUS_PLUS) || identical(operatorType, TokenType.MINUS_MINUS)) { |
| Type2 operandType = getType(node.operand); |
| if (operandType == null) { |
| return null; |
| } |
| Element operandTypeElement = operandType.element; |
| String methodName; |
| if (identical(operatorType, TokenType.PLUS_PLUS)) { |
| methodName = TokenType.PLUS.lexeme; |
| } else if (identical(operatorType, TokenType.MINUS_MINUS)) { |
| methodName = TokenType.MINUS.lexeme; |
| } else if (identical(operatorType, TokenType.MINUS)) { |
| methodName = "unary-"; |
| } else { |
| methodName = operator10.lexeme; |
| } |
| MethodElement member = lookUpMethod(operandTypeElement, methodName, 1, []); |
| if (member == null) { |
| _resolver.reportError2(ResolverErrorCode.CANNOT_BE_RESOLVED, operator10, [methodName]); |
| } else { |
| node.element = member; |
| } |
| } |
| return null; |
| } |
| Object visitPropertyAccess(PropertyAccess node) { |
| Type2 targetType = getType(node.realTarget); |
| if (targetType is! InterfaceType) { |
| return null; |
| } |
| ClassElement targetElement = ((targetType as InterfaceType)).element; |
| SimpleIdentifier identifier = node.propertyName; |
| PropertyAccessorElement memberElement; |
| if (identifier.inSetterContext()) { |
| memberElement = lookUpSetter(targetElement, identifier.name); |
| } else { |
| memberElement = lookUpGetter(targetElement, identifier.name); |
| } |
| if (memberElement == null) { |
| MethodElement methodElement = lookUpMethod(targetElement, identifier.name, -1, []); |
| if (methodElement != null) { |
| recordResolution(identifier, methodElement); |
| return null; |
| } |
| } |
| if (memberElement == null) { |
| _resolver.reportError(ResolverErrorCode.CANNOT_BE_RESOLVED, identifier, [identifier.name]); |
| } else { |
| recordResolution(identifier, memberElement); |
| } |
| return null; |
| } |
| Object visitRedirectingConstructorInvocation(RedirectingConstructorInvocation node) { |
| ClassElement enclosingClass2 = _resolver.enclosingClass; |
| if (enclosingClass2 == null) { |
| return null; |
| } |
| SimpleIdentifier name = node.constructorName; |
| ConstructorElement element; |
| if (name == null) { |
| element = enclosingClass2.unnamedConstructor; |
| } else { |
| element = enclosingClass2.getNamedConstructor(name.name); |
| } |
| if (element == null) { |
| return null; |
| } |
| if (name != null) { |
| recordResolution(name, element); |
| } |
| node.element = element; |
| return null; |
| } |
| Object visitSimpleIdentifier(SimpleIdentifier node) { |
| if (node.element != null) { |
| return null; |
| } |
| Element element = _resolver.nameScope.lookup(node, _resolver.definingLibrary); |
| if (element == null) { |
| if (node.inGetterContext()) { |
| element = lookUpGetter(_resolver.enclosingClass, node.name); |
| } else { |
| element = lookUpSetter(_resolver.enclosingClass, node.name); |
| } |
| } |
| if (element == null) { |
| element = lookUpMethod(_resolver.enclosingClass, node.name, -1, []); |
| } |
| if (element == null) { |
| } |
| recordResolution(node, element); |
| return null; |
| } |
| Object visitSuperConstructorInvocation(SuperConstructorInvocation node) { |
| ClassElement enclosingClass3 = _resolver.enclosingClass; |
| if (enclosingClass3 == null) { |
| return null; |
| } |
| ClassElement superclass = getSuperclass(enclosingClass3); |
| if (superclass == null) { |
| return null; |
| } |
| SimpleIdentifier name = node.constructorName; |
| ConstructorElement element; |
| if (name == null) { |
| element = superclass.unnamedConstructor; |
| } else { |
| element = superclass.getNamedConstructor(name.name); |
| } |
| if (element == null) { |
| return null; |
| } |
| if (name != null) { |
| recordResolution(name, element); |
| } |
| node.element = element; |
| return null; |
| } |
| /** |
| * Return the element representing the superclass of the given class. |
| * @param targetClass the class whose superclass is to be returned |
| * @return the element representing the superclass of the given class |
| */ |
| ClassElement getSuperclass(ClassElement targetClass) { |
| InterfaceType superType = targetClass.supertype; |
| if (superType == null) { |
| return null; |
| } |
| return superType.element; |
| } |
| /** |
| * Return the type of the given expression that is to be used for type analysis. |
| * @param expression the expression whose type is to be returned |
| * @return the type of the given expression |
| */ |
| Type2 getType(Expression expression) => expression.staticType; |
| /** |
| * Look up the getter with the given name in the given type. Return the element representing the |
| * getter that was found, or {@code null} if there is no getter with the given name. |
| * @param element the element representing the type in which the getter is defined |
| * @param getterName the name of the getter being looked up |
| * @return the element representing the getter that was found |
| */ |
| PropertyAccessorElement lookUpGetter(Element element, String getterName) { |
| if (identical(element, DynamicTypeImpl.instance)) { |
| return null; |
| } |
| element = resolveTypeVariable(element); |
| if (element is ClassElement) { |
| ClassElement classElement = (element as ClassElement); |
| PropertyAccessorElement member = classElement.lookUpGetter(getterName, _resolver.definingLibrary); |
| if (member != null) { |
| return member; |
| } |
| return lookUpGetterInInterfaces((element as ClassElement), getterName, new Set<ClassElement>()); |
| } |
| return null; |
| } |
| /** |
| * Look up the name of a getter in the interfaces implemented by the given type, either directly |
| * or indirectly. Return the element representing the getter that was found, or {@code null} if |
| * there is no getter with the given name. |
| * @param element the element representing the type in which the getter is defined |
| * @param memberName the name of the getter being looked up |
| * @param visitedInterfaces a set containing all of the interfaces that have been examined, used |
| * to prevent infinite recursion and to optimize the search |
| * @return the element representing the getter that was found |
| */ |
| PropertyAccessorElement lookUpGetterInInterfaces(ClassElement targetClass, String memberName, Set<ClassElement> visitedInterfaces) { |
| if (visitedInterfaces.contains(targetClass)) { |
| return null; |
| } |
| javaSetAdd(visitedInterfaces, targetClass); |
| PropertyAccessorElement member = lookUpGetterInType(targetClass, memberName); |
| if (member != null) { |
| return member; |
| } |
| for (InterfaceType interfaceType in targetClass.interfaces) { |
| member = lookUpGetterInInterfaces(interfaceType.element, memberName, visitedInterfaces); |
| if (member != null) { |
| return member; |
| } |
| } |
| ClassElement superclass = getSuperclass(targetClass); |
| if (superclass == null) { |
| return null; |
| } |
| return lookUpGetterInInterfaces(superclass, memberName, visitedInterfaces); |
| } |
| /** |
| * Look up the name of a getter in the given type. Return the element representing the getter that |
| * was found, or {@code null} if there is no getter with the given name. |
| * @param element the element representing the type in which the getter is defined |
| * @param memberName the name of the getter being looked up |
| * @return the element representing the getter that was found |
| */ |
| PropertyAccessorElement lookUpGetterInType(ClassElement element, String memberName) { |
| for (PropertyAccessorElement accessor in element.accessors) { |
| if (accessor.isGetter() && accessor.name == memberName) { |
| return accessor; |
| } |
| } |
| return null; |
| } |
| /** |
| * Find the element corresponding to the given label node in the current label scope. |
| * @param parentNode the node containing the given label |
| * @param labelNode the node representing the label being looked up |
| * @return the element corresponding to the given label node in the current scope |
| */ |
| LabelElementImpl lookupLabel(ASTNode parentNode, SimpleIdentifier labelNode) { |
| LabelScope labelScope2 = _resolver.labelScope; |
| LabelElementImpl labelElement = null; |
| if (labelNode == null) { |
| if (labelScope2 == null) { |
| } else { |
| labelElement = (labelScope2.lookup2(LabelScope.EMPTY_LABEL) as LabelElementImpl); |
| if (labelElement == null) { |
| } |
| } |
| } else { |
| if (labelScope2 == null) { |
| _resolver.reportError(ResolverErrorCode.UNDEFINED_LABEL, labelNode, [labelNode.name]); |
| } else { |
| labelElement = (labelScope2.lookup(labelNode) as LabelElementImpl); |
| if (labelElement == null) { |
| _resolver.reportError(ResolverErrorCode.UNDEFINED_LABEL, labelNode, [labelNode.name]); |
| } else { |
| recordResolution(labelNode, labelElement); |
| } |
| } |
| } |
| if (labelElement != null) { |
| ExecutableElement labelContainer = labelElement.getAncestor(ExecutableElement); |
| if (labelContainer != _resolver.enclosingFunction) { |
| if (labelNode == null) { |
| _resolver.reportError(ResolverErrorCode.LABEL_IN_OUTER_SCOPE, parentNode, [""]); |
| } else { |
| _resolver.reportError(ResolverErrorCode.LABEL_IN_OUTER_SCOPE, labelNode, [labelNode.name]); |
| } |
| labelElement = null; |
| } |
| } |
| return labelElement; |
| } |
| /** |
| * Look up the method with the given name in the given type. Return the element representing the |
| * method that was found, or {@code null} if there is no method with the given name. |
| * @param element the element representing the type in which the method is defined |
| * @param methodName the name of the method being looked up |
| * @return the element representing the method that was found |
| */ |
| MethodElement lookUpMethod(Element element, String methodName, int parameterCount, List<String> parameterNames) { |
| if (identical(element, DynamicTypeImpl.instance)) { |
| return null; |
| } |
| element = resolveTypeVariable(element); |
| if (element is ClassElement) { |
| ClassElement classElement = (element as ClassElement); |
| MethodElement member = classElement.lookUpMethod(methodName, _resolver.definingLibrary); |
| if (member != null) { |
| return member; |
| } |
| return lookUpMethodInInterfaces((element as ClassElement), methodName, new Set<ClassElement>()); |
| } |
| return null; |
| } |
| /** |
| * Look up the name of a member in the interfaces implemented by the given type, either directly |
| * or indirectly. Return the element representing the member that was found, or {@code null} if |
| * there is no member with the given name. |
| * @param element the element representing the type in which the member is defined |
| * @param memberName the name of the member being looked up |
| * @param visitedInterfaces a set containing all of the interfaces that have been examined, used |
| * to prevent infinite recursion and to optimize the search |
| * @return the element representing the member that was found |
| */ |
| MethodElement lookUpMethodInInterfaces(ClassElement targetClass, String memberName, Set<ClassElement> visitedInterfaces) { |
| if (visitedInterfaces.contains(targetClass)) { |
| return null; |
| } |
| javaSetAdd(visitedInterfaces, targetClass); |
| MethodElement member = lookUpMethodInType(targetClass, memberName); |
| if (member != null) { |
| return member; |
| } |
| for (InterfaceType interfaceType in targetClass.interfaces) { |
| member = lookUpMethodInInterfaces(interfaceType.element, memberName, visitedInterfaces); |
| if (member != null) { |
| return member; |
| } |
| } |
| ClassElement superclass = getSuperclass(targetClass); |
| if (superclass == null) { |
| return null; |
| } |
| return lookUpMethodInInterfaces(superclass, memberName, visitedInterfaces); |
| } |
| /** |
| * Look up the name of a method in the given type. Return the element representing the method that |
| * was found, or {@code null} if there is no method with the given name. |
| * @param element the element representing the type in which the method is defined |
| * @param memberName the name of the method being looked up |
| * @return the element representing the method that was found |
| */ |
| MethodElement lookUpMethodInType(ClassElement element, String memberName) { |
| for (MethodElement method in element.methods) { |
| if (method.name == memberName) { |
| return method; |
| } |
| } |
| return null; |
| } |
| /** |
| * Look up the setter with the given name in the given type. Return the element representing the |
| * setter that was found, or {@code null} if there is no setter with the given name. |
| * @param element the element representing the type in which the setter is defined |
| * @param setterName the name of the setter being looked up |
| * @return the element representing the setter that was found |
| */ |
| PropertyAccessorElement lookUpSetter(Element element, String setterName) { |
| if (identical(element, DynamicTypeImpl.instance)) { |
| return null; |
| } |
| element = resolveTypeVariable(element); |
| if (element is ClassElement) { |
| ClassElement classElement = (element as ClassElement); |
| PropertyAccessorElement member = classElement.lookUpSetter(setterName, _resolver.definingLibrary); |
| if (member != null) { |
| return member; |
| } |
| return lookUpSetterInInterfaces((element as ClassElement), setterName, new Set<ClassElement>()); |
| } |
| return null; |
| } |
| /** |
| * Look up the name of a setter in the interfaces implemented by the given type, either directly |
| * or indirectly. Return the element representing the setter that was found, or {@code null} if |
| * there is no setter with the given name. |
| * @param element the element representing the type in which the setter is defined |
| * @param memberName the name of the setter being looked up |
| * @param visitedInterfaces a set containing all of the interfaces that have been examined, used |
| * to prevent infinite recursion and to optimize the search |
| * @return the element representing the setter that was found |
| */ |
| PropertyAccessorElement lookUpSetterInInterfaces(ClassElement targetClass, String memberName, Set<ClassElement> visitedInterfaces) { |
| if (visitedInterfaces.contains(targetClass)) { |
| return null; |
| } |
| javaSetAdd(visitedInterfaces, targetClass); |
| PropertyAccessorElement member = lookUpSetterInType(targetClass, memberName); |
| if (member != null) { |
| return member; |
| } |
| for (InterfaceType interfaceType in targetClass.interfaces) { |
| member = lookUpSetterInInterfaces(interfaceType.element, memberName, visitedInterfaces); |
| if (member != null) { |
| return member; |
| } |
| } |
| ClassElement superclass = getSuperclass(targetClass); |
| if (superclass == null) { |
| return null; |
| } |
| return lookUpSetterInInterfaces(superclass, memberName, visitedInterfaces); |
| } |
| /** |
| * Look up the name of a setter in the given type. Return the element representing the setter that |
| * was found, or {@code null} if there is no setter with the given name. |
| * @param element the element representing the type in which the setter is defined |
| * @param memberName the name of the setter being looked up |
| * @return the element representing the setter that was found |
| */ |
| PropertyAccessorElement lookUpSetterInType(ClassElement element, String memberName) { |
| for (PropertyAccessorElement accessor in element.accessors) { |
| if (accessor.isSetter() && accessor.name == memberName) { |
| return accessor; |
| } |
| } |
| return null; |
| } |
| /** |
| * Return the binary operator that is invoked by the given compound assignment operator. |
| * @param operator the assignment operator being mapped |
| * @return the binary operator that invoked by the given assignment operator |
| */ |
| TokenType operatorFromCompoundAssignment(TokenType operator) { |
| if (operator == TokenType.AMPERSAND_EQ) { |
| return TokenType.AMPERSAND; |
| } else if (operator == TokenType.BAR_EQ) { |
| return TokenType.BAR; |
| } else if (operator == TokenType.CARET_EQ) { |
| return TokenType.CARET; |
| } else if (operator == TokenType.GT_GT_EQ) { |
| return TokenType.GT_GT; |
| } else if (operator == TokenType.LT_LT_EQ) { |
| return TokenType.LT_LT; |
| } else if (operator == TokenType.MINUS_EQ) { |
| return TokenType.MINUS; |
| } else if (operator == TokenType.PERCENT_EQ) { |
| return TokenType.PERCENT; |
| } else if (operator == TokenType.PLUS_EQ) { |
| return TokenType.PLUS; |
| } else if (operator == TokenType.SLASH_EQ) { |
| return TokenType.SLASH; |
| } else if (operator == TokenType.STAR_EQ) { |
| return TokenType.STAR; |
| } else if (operator == TokenType.TILDE_SLASH_EQ) { |
| return TokenType.TILDE_SLASH; |
| } |
| AnalysisEngine.instance.logger.logError("Failed to map ${operator.lexeme} to it's corresponding operator"); |
| return operator; |
| } |
| /** |
| * Record the fact that the given AST node was resolved to the given element. |
| * @param node the AST node that was resolved |
| * @param element the element to which the AST node was resolved |
| */ |
| void recordResolution(Identifier node, Element element39) { |
| if (element39 != null) { |
| node.element = element39; |
| } |
| } |
| /** |
| * If the given element is a type variable, resolve it to the class that should be used when |
| * looking up members. Otherwise, return the original element. |
| * @param element the element that is to be resolved if it is a type variable |
| * @return the class that should be used in place of the argument if it is a type variable, or the |
| * original argument if it isn't a type variable |
| */ |
| Element resolveTypeVariable(Element element40) { |
| if (element40 is TypeVariableElement) { |
| Type2 bound3 = ((element40 as TypeVariableElement)).bound; |
| if (bound3 == null) { |
| return _resolver.typeProvider.objectType.element; |
| } |
| return bound3.element; |
| } |
| return element40; |
| } |
| } |
| class Identifier_2 extends Identifier { |
| String name9; |
| Identifier_2(this.name9) : super(); |
| accept(ASTVisitor visitor) => null; |
| Token get beginToken => null; |
| Token get endToken => null; |
| String get name => name9; |
| void visitChildren(ASTVisitor<Object> visitor) { |
| } |
| } |
| /** |
| * Instances of the class {@code Library} represent the data about a single library during the |
| * resolution of some (possibly different) library. They are not intended to be used except during |
| * the resolution process. |
| */ |
| class Library { |
| /** |
| * The analysis context in which this library is being analyzed. |
| */ |
| AnalysisContextImpl _analysisContext; |
| /** |
| * The listener to which analysis errors will be reported. |
| */ |
| AnalysisErrorListener _errorListener; |
| /** |
| * The source specifying the defining compilation unit of this library. |
| */ |
| Source _librarySource; |
| /** |
| * The library element representing this library. |
| */ |
| LibraryElementImpl _libraryElement; |
| /** |
| * A list containing all of the libraries that are imported into this library. |
| */ |
| Map<ImportDirective, Library> _importedLibraries = new Map<ImportDirective, Library>(); |
| /** |
| * A flag indicating whether this library explicitly imports core. |
| */ |
| bool _explicitlyImportsCore = false; |
| /** |
| * A list containing all of the libraries that are exported from this library. |
| */ |
| Map<ExportDirective, Library> _exportedLibraries = new Map<ExportDirective, Library>(); |
| /** |
| * A table mapping the sources for the compilation units in this library to their corresponding |
| * AST structures. |
| */ |
| Map<Source, CompilationUnit> _astMap = new Map<Source, CompilationUnit>(); |
| /** |
| * The library scope used when resolving elements within this library's compilation units. |
| */ |
| LibraryScope _libraryScope; |
| /** |
| * Initialize a newly created data holder that can maintain the data associated with a library. |
| * @param analysisContext the analysis context in which this library is being analyzed |
| * @param errorListener the listener to which analysis errors will be reported |
| * @param librarySource the source specifying the defining compilation unit of this library |
| */ |
| Library(AnalysisContextImpl analysisContext, AnalysisErrorListener errorListener, Source librarySource) { |
| this._analysisContext = analysisContext; |
| this._errorListener = errorListener; |
| this._librarySource = librarySource; |
| this._libraryElement = (analysisContext.getLibraryElementOrNull(librarySource) as LibraryElementImpl); |
| } |
| /** |
| * Record that the given library is exported from this library. |
| * @param importLibrary the library that is exported from this library |
| */ |
| void addExport(ExportDirective directive, Library exportLibrary) { |
| _exportedLibraries[directive] = exportLibrary; |
| } |
| /** |
| * Record that the given library is imported into this library. |
| * @param importLibrary the library that is imported into this library |
| */ |
| void addImport(ImportDirective directive, Library importLibrary) { |
| _importedLibraries[directive] = importLibrary; |
| } |
| /** |
| * Return the AST structure associated with the given source. |
| * @param source the source representing the compilation unit whose AST is to be returned |
| * @return the AST structure associated with the given source |
| * @throws AnalysisException if an AST structure could not be created for the compilation unit |
| */ |
| CompilationUnit getAST(Source source) { |
| CompilationUnit unit = _astMap[source]; |
| if (unit == null) { |
| unit = _analysisContext.parse2(source, _errorListener); |
| _astMap[source] = unit; |
| } |
| return unit; |
| } |
| /** |
| * Return a collection containing the sources for the compilation units in this library. |
| * @return the sources for the compilation units in this library |
| */ |
| Set<Source> get compilationUnitSources => _astMap.keys.toSet(); |
| /** |
| * Return the AST structure associated with the defining compilation unit for this library. |
| * @return the AST structure associated with the defining compilation unit for this library |
| * @throws AnalysisException if an AST structure could not be created for the defining compilation |
| * unit |
| */ |
| CompilationUnit get definingCompilationUnit => getAST(librarySource); |
| /** |
| * Return {@code true} if this library explicitly imports core. |
| * @return {@code true} if this library explicitly imports core |
| */ |
| bool get explicitlyImportsCore => _explicitlyImportsCore; |
| /** |
| * Return the library exported by the given directive. |
| * @param directive the directive that exports the library to be returned |
| * @return the library exported by the given directive |
| */ |
| Library getExport(ExportDirective directive) => _exportedLibraries[directive]; |
| /** |
| * Return an array containing the libraries that are exported from this library. |
| * @return an array containing the libraries that are exported from this library |
| */ |
| List<Library> get exports { |
| Set<Library> libraries = new Set<Library>(); |
| libraries.addAll(_exportedLibraries.values); |
| return new List.from(libraries); |
| } |
| /** |
| * Return the library imported by the given directive. |
| * @param directive the directive that imports the library to be returned |
| * @return the library imported by the given directive |
| */ |
| Library getImport(ImportDirective directive) => _importedLibraries[directive]; |
| /** |
| * Return an array containing the libraries that are imported into this library. |
| * @return an array containing the libraries that are imported into this library |
| */ |
| List<Library> get imports { |
| Set<Library> libraries = new Set<Library>(); |
| libraries.addAll(_importedLibraries.values); |
| return new List.from(libraries); |
| } |
| /** |
| * Return an array containing the libraries that are either imported or exported from this |
| * library. |
| * @return the libraries that are either imported or exported from this library |
| */ |
| List<Library> get importsAndExports { |
| Set<Library> libraries = new Set<Library>(); |
| libraries.addAll(_importedLibraries.values); |
| libraries.addAll(_exportedLibraries.values); |
| return new List.from(libraries); |
| } |
| /** |
| * Return the library element representing this library, creating it if necessary. |
| * @return the library element representing this library |
| */ |
| LibraryElementImpl get libraryElement { |
| if (_libraryElement == null) { |
| _libraryElement = (_analysisContext.getLibraryElement(_librarySource) as LibraryElementImpl); |
| } |
| return _libraryElement; |
| } |
| /** |
| * Return the library scope used when resolving elements within this library's compilation units. |
| * @return the library scope used when resolving elements within this library's compilation units |
| */ |
| LibraryScope get libraryScope { |
| if (_libraryScope == null) { |
| _libraryScope = new LibraryScope(_libraryElement, _errorListener); |
| } |
| return _libraryScope; |
| } |
| /** |
| * Return the source specifying the defining compilation unit of this library. |
| * @return the source specifying the defining compilation unit of this library |
| */ |
| Source get librarySource => _librarySource; |
| /** |
| * Return the result of resolving the given URI against the URI of the library, or {@code null} if |
| * the URI is not valid. If the URI is not valid, report the error. |
| * @param uriLiteral the string literal specifying the URI to be resolved |
| * @return the result of resolving the given URI against the URI of the library |
| */ |
| Source getSource(StringLiteral uriLiteral) => getSource2(getStringValue(uriLiteral), uriLiteral.offset, uriLiteral.length); |
| /** |
| * Set whether this library explicitly imports core to match the given value. |
| * @param explicitlyImportsCore {@code true} if this library explicitly imports core |
| */ |
| void set explicitlyImportsCore(bool explicitlyImportsCore2) { |
| this._explicitlyImportsCore = explicitlyImportsCore2; |
| } |
| /** |
| * Set the library element representing this library to the given library element. |
| * @param libraryElement the library element representing this library |
| */ |
| void set libraryElement(LibraryElementImpl libraryElement2) { |
| this._libraryElement = libraryElement2; |
| } |
| String toString() => _librarySource.shortName; |
| /** |
| * Append the value of the given string literal to the given string builder. |
| * @param builder the builder to which the string's value is to be appended |
| * @param literal the string literal whose value is to be appended to the builder |
| * @throws IllegalArgumentException if the string is not a constant string without any string |
| * interpolation |
| */ |
| void appendStringValue(StringBuffer builder, StringLiteral literal) { |
| if (literal is SimpleStringLiteral) { |
| builder.add(((literal as SimpleStringLiteral)).value); |
| } else if (literal is AdjacentStrings) { |
| for (StringLiteral stringLiteral in ((literal as AdjacentStrings)).strings) { |
| appendStringValue(builder, stringLiteral); |
| } |
| } else { |
| throw new IllegalArgumentException(); |
| } |
| } |
| /** |
| * Return the result of resolving the given URI against the URI of the library, or {@code null} if |
| * the URI is not valid. If the URI is not valid, report the error. |
| * @param uri the URI to be resolved |
| * @param uriOffset the offset of the string literal representing the URI |
| * @param uriLength the length of the string literal representing the URI |
| * @return the result of resolving the given URI against the URI of the library |
| */ |
| Source getSource2(String uri, int uriOffset, int uriLength) { |
| if (uri == null) { |
| _errorListener.onError(new AnalysisError.con2(_librarySource, uriOffset, uriLength, ResolverErrorCode.INVALID_URI, [])); |
| return null; |
| } |
| return _librarySource.resolve(uri); |
| } |
| /** |
| * Return the value of the given string literal, or {@code null} if the string is not a constant |
| * string without any string interpolation. |
| * @param literal the string literal whose value is to be returned |
| * @return the value of the given string literal |
| */ |
| String getStringValue(StringLiteral literal) { |
| StringBuffer builder = new StringBuffer(); |
| try { |
| appendStringValue(builder, literal); |
| } on IllegalArgumentException catch (exception) { |
| return null; |
| } |
| return builder.toString(); |
| } |
| } |
| /** |
| * Instances of the class {@code LibraryElementBuilder} build an element model for a single library. |
| */ |
| class LibraryElementBuilder { |
| /** |
| * The analysis context in which the element model will be built. |
| */ |
| AnalysisContextImpl _analysisContext; |
| /** |
| * The listener to which errors will be reported. |
| */ |
| AnalysisErrorListener _errorListener; |
| /** |
| * The name of the core library. |
| */ |
| static String CORE_LIBRARY_URI = "dart:core"; |
| /** |
| * The name of the function used as an entry point. |
| */ |
| static String _ENTRY_POINT_NAME = "main"; |
| /** |
| * Initialize a newly created library element builder. |
| * @param resolver the resolver for which the element model is being built |
| */ |
| LibraryElementBuilder(LibraryResolver resolver) { |
| this._analysisContext = resolver.analysisContext; |
| this._errorListener = resolver.errorListener; |
| } |
| /** |
| * Build the library element for the given library. |
| * @param library the library for which an element model is to be built |
| * @return the library element that was built |
| * @throws AnalysisException if the analysis could not be performed |
| */ |
| LibraryElementImpl buildLibrary(Library library) { |
| CompilationUnitBuilder builder = new CompilationUnitBuilder(_analysisContext, _errorListener); |
| Source librarySource2 = library.librarySource; |
| CompilationUnit definingCompilationUnit3 = library.definingCompilationUnit; |
| CompilationUnitElementImpl definingCompilationUnitElement = builder.buildCompilationUnit2(librarySource2, definingCompilationUnit3); |
| NodeList<Directive> directives3 = definingCompilationUnit3.directives; |
| LibraryIdentifier libraryNameNode = null; |
| bool hasPartDirective = false; |
| FunctionElement entryPoint = findEntryPoint(definingCompilationUnitElement); |
| List<ImportElement> imports = new List<ImportElement>(); |
| List<ExportElement> exports = new List<ExportElement>(); |
| List<Directive> directivesToResolve = new List<Directive>(); |
| List<CompilationUnitElementImpl> sourcedCompilationUnits = new List<CompilationUnitElementImpl>(); |
| for (Directive directive in directives3) { |
| if (directive is LibraryDirective) { |
| if (libraryNameNode == null) { |
| libraryNameNode = ((directive as LibraryDirective)).name; |
| directivesToResolve.add(directive); |
| } |
| } else if (directive is PartDirective) { |
| hasPartDirective = true; |
| StringLiteral partUri = ((directive as PartDirective)).uri; |
| Source partSource = library.getSource(partUri); |
| if (partSource != null) { |
| CompilationUnitElementImpl part = builder.buildCompilationUnit(partSource); |
| String partLibraryName = getPartLibraryName(library, partSource, directivesToResolve); |
| if (partLibraryName == null) { |
| _errorListener.onError(new AnalysisError.con2(librarySource2, partUri.offset, partUri.length, ResolverErrorCode.MISSING_PART_OF_DIRECTIVE, [])); |
| } else if (libraryNameNode == null) { |
| } else if (libraryNameNode.name != partLibraryName) { |
| _errorListener.onError(new AnalysisError.con2(librarySource2, partUri.offset, partUri.length, ResolverErrorCode.PART_WITH_WRONG_LIBRARY_NAME, [partLibraryName])); |
| } |
| if (entryPoint == null) { |
| entryPoint = findEntryPoint(part); |
| } |
| directive.element = part; |
| sourcedCompilationUnits.add(part); |
| } |
| } |
| } |
| if (hasPartDirective && libraryNameNode == null) { |
| _errorListener.onError(new AnalysisError.con1(librarySource2, ResolverErrorCode.MISSING_LIBRARY_DIRECTIVE_WITH_PART, [])); |
| } |
| LibraryElementImpl libraryElement = new LibraryElementImpl(_analysisContext, libraryNameNode); |
| libraryElement.definingCompilationUnit = definingCompilationUnitElement; |
| if (entryPoint != null) { |
| libraryElement.entryPoint = entryPoint; |
| } |
| libraryElement.imports = new List.from(imports); |
| libraryElement.exports = new List.from(exports); |
| libraryElement.parts = new List.from(sourcedCompilationUnits); |
| for (Directive directive in directivesToResolve) { |
| directive.element = libraryElement; |
| } |
| library.libraryElement = libraryElement; |
| return libraryElement; |
| } |
| /** |
| * Search the top-level functions defined in the given compilation unit for the entry point. |
| * @param element the compilation unit to be searched |
| * @return the entry point that was found, or {@code null} if the compilation unit does not define |
| * an entry point |
| */ |
| FunctionElement findEntryPoint(CompilationUnitElementImpl element) { |
| for (FunctionElement function in element.functions) { |
| if (function.name == _ENTRY_POINT_NAME) { |
| return function; |
| } |
| } |
| return null; |
| } |
| /** |
| * Return the name of the library that the given part is declared to be a part of, or {@code null}if the part does not contain a part-of directive. |
| * @param library the library containing the part |
| * @param partSource the source representing the part |
| * @param directivesToResolve a list of directives that should be resolved to the library being |
| * built |
| * @return the name of the library that the given part is declared to be a part of |
| */ |
| String getPartLibraryName(Library library, Source partSource, List<Directive> directivesToResolve) { |
| try { |
| CompilationUnit partUnit = library.getAST(partSource); |
| for (Directive directive in partUnit.directives) { |
| if (directive is PartOfDirective) { |
| directivesToResolve.add(directive); |
| LibraryIdentifier libraryName3 = ((directive as PartOfDirective)).libraryName; |
| if (libraryName3 != null) { |
| return libraryName3.name; |
| } |
| } |
| } |
| } on AnalysisException catch (exception) { |
| } |
| return null; |
| } |
| } |
| /** |
| * Instances of the class {@code LibraryResolver} are used to resolve one or more mutually dependent |
| * libraries within a single context. |
| */ |
| class LibraryResolver { |
| /** |
| * The analysis context in which the libraries are being analyzed. |
| */ |
| AnalysisContextImpl _analysisContext; |
| /** |
| * The listener to which analysis errors will be reported. |
| */ |
| AnalysisErrorListener _errorListener; |
| /** |
| * A source object representing the core library (dart:core). |
| */ |
| Source _coreLibrarySource; |
| /** |
| * The object representing the core library. |
| */ |
| Library _coreLibrary; |
| /** |
| * The object used to access the types from the core library. |
| */ |
| TypeProvider _typeProvider; |
| /** |
| * A table mapping library sources to the information being maintained for those libraries. |
| */ |
| Map<Source, Library> _libraryMap = new Map<Source, Library>(); |
| /** |
| * A collection containing the libraries that are being resolved together. |
| */ |
| Set<Library> _librariesInCycles; |
| /** |
| * Initialize a newly created library resolver to resolve libraries within the given context. |
| * @param analysisContext the analysis context in which the library is being analyzed |
| * @param errorListener the listener to which analysis errors will be reported |
| */ |
| LibraryResolver(AnalysisContextImpl analysisContext, AnalysisErrorListener errorListener) { |
| this._analysisContext = analysisContext; |
| this._errorListener = errorListener; |
| _coreLibrarySource = analysisContext.sourceFactory.forUri(LibraryElementBuilder.CORE_LIBRARY_URI); |
| } |
| /** |
| * Return the analysis context in which the libraries are being analyzed. |
| * @return the analysis context in which the libraries are being analyzed |
| */ |
| AnalysisContextImpl get analysisContext => _analysisContext; |
| /** |
| * Return the listener to which analysis errors will be reported. |
| * @return the listener to which analysis errors will be reported |
| */ |
| AnalysisErrorListener get errorListener => _errorListener; |
| /** |
| * Resolve the library specified by the given source in the given context. |
| * <p> |
| * Note that because Dart allows circular imports between libraries, it is possible that more than |
| * one library will need to be resolved. In such cases the error listener can receive errors from |
| * multiple libraries. |
| * @param librarySource the source specifying the defining compilation unit of the library to be |
| * resolved |
| * @param fullAnalysis {@code true} if a full analysis should be performed |
| * @return the element representing the resolved library |
| * @throws AnalysisException if the library could not be resolved for some reason |
| */ |
| LibraryElement resolveLibrary(Source librarySource, bool fullAnalysis) { |
| Library targetLibrary = createLibrary(librarySource); |
| _coreLibrary = _libraryMap[_coreLibrarySource]; |
| if (_coreLibrary == null) { |
| _coreLibrary = createLibrary(_coreLibrarySource); |
| } |
| computeLibraryDependencies(targetLibrary); |
| _librariesInCycles = computeLibrariesInCycles(targetLibrary); |
| buildElementModels(); |
| buildDirectiveModels(); |
| _typeProvider = new TypeProviderImpl(_coreLibrary.libraryElement); |
| buildTypeHierarchies(); |
| resolveReferencesAndTypes(); |
| if (fullAnalysis) { |
| } |
| recordLibraryElements(); |
| return targetLibrary.libraryElement; |
| } |
| /** |
| * Add a dependency to the given map from the referencing library to the referenced library. |
| * @param dependencyMap the map to which the dependency is to be added |
| * @param referencingLibrary the library that references the referenced library |
| * @param referencedLibrary the library referenced by the referencing library |
| */ |
| void addDependencyToMap(Map<Library, List<Library>> dependencyMap, Library referencingLibrary, Library referencedLibrary) { |
| List<Library> dependentLibraries = dependencyMap[referencedLibrary]; |
| if (dependentLibraries == null) { |
| dependentLibraries = new List<Library>(); |
| dependencyMap[referencedLibrary] = dependentLibraries; |
| } |
| dependentLibraries.add(referencingLibrary); |
| } |
| /** |
| * Given a library that is part of a cycle that includes the root library, add to the given set of |
| * libraries all of the libraries reachable from the root library that are also included in the |
| * cycle. |
| * @param library the library to be added to the collection of libraries in cycles |
| * @param librariesInCycle a collection of the libraries that are in the cycle |
| * @param dependencyMap a table mapping libraries to the collection of libraries from which those |
| * libraries are referenced |
| */ |
| void addLibrariesInCycle(Library library, Set<Library> librariesInCycle, Map<Library, List<Library>> dependencyMap) { |
| if (javaSetAdd(librariesInCycle, library)) { |
| List<Library> dependentLibraries = dependencyMap[library]; |
| if (dependentLibraries != null) { |
| for (Library dependentLibrary in dependentLibraries) { |
| addLibrariesInCycle(dependentLibrary, librariesInCycle, dependencyMap); |
| } |
| } |
| } |
| } |
| /** |
| * Add the given library, and all libraries reachable from it that have not already been visited, |
| * to the given dependency map. |
| * @param library the library currently being added to the dependency map |
| * @param dependencyMap the dependency map being computed |
| * @param visitedLibraries the libraries that have already been visited, used to prevent infinite |
| * recursion |
| */ |
| void addToDependencyMap(Library library, Map<Library, List<Library>> dependencyMap, Set<Library> visitedLibraries) { |
| if (javaSetAdd(visitedLibraries, library)) { |
| for (Library referencedLibrary in library.importsAndExports) { |
| addDependencyToMap(dependencyMap, library, referencedLibrary); |
| addToDependencyMap(referencedLibrary, dependencyMap, visitedLibraries); |
| } |
| if (!library.explicitlyImportsCore && library != _coreLibrary) { |
| addDependencyToMap(dependencyMap, library, _coreLibrary); |
| } |
| } |
| } |
| /** |
| * Build the element model representing the combinators declared by the given directive. |
| * @param directive the directive that declares the combinators |
| * @return an array containing the import combinators that were built |
| */ |
| List<NamespaceCombinator> buildCombinators(NamespaceDirective directive) { |
| List<NamespaceCombinator> combinators = new List<NamespaceCombinator>(); |
| for (Combinator combinator in directive.combinators) { |
| if (combinator is HideCombinator) { |
| HideCombinatorImpl hide = new HideCombinatorImpl(); |
| hide.hiddenNames = getIdentifiers(((combinator as HideCombinator)).hiddenNames); |
| combinators.add(hide); |
| } else { |
| ShowCombinatorImpl show = new ShowCombinatorImpl(); |
| show.shownNames = getIdentifiers(((combinator as ShowCombinator)).shownNames); |
| combinators.add(show); |
| } |
| } |
| return new List.from(combinators); |
| } |
| /** |
| * Every library now has a corresponding {@link LibraryElement}, so it is now possible to resolve |
| * the import and export directives. |
| * @throws AnalysisException if the defining compilation unit for any of the libraries could not |
| * be accessed |
| */ |
| void buildDirectiveModels() { |
| for (Library library in _librariesInCycles) { |
| Map<String, PrefixElementImpl> nameToPrefixMap = new Map<String, PrefixElementImpl>(); |
| List<ImportElement> imports = new List<ImportElement>(); |
| List<ExportElement> exports = new List<ExportElement>(); |
| for (Directive directive in library.definingCompilationUnit.directives) { |
| if (directive is ImportDirective) { |
| ImportDirective importDirective = (directive as ImportDirective); |
| Library importedLibrary = library.getImport(importDirective); |
| ImportElementImpl importElement = new ImportElementImpl(); |
| importElement.combinators = buildCombinators(importDirective); |
| LibraryElement importedLibraryElement = importedLibrary.libraryElement; |
| if (importedLibraryElement != null) { |
| importElement.importedLibrary = importedLibraryElement; |
| directive.element = importedLibraryElement; |
| } |
| SimpleIdentifier prefixNode = ((directive as ImportDirective)).prefix; |
| if (prefixNode != null) { |
| String prefixName = prefixNode.name; |
| PrefixElementImpl prefix = nameToPrefixMap[prefixName]; |
| if (prefix == null) { |
| prefix = new PrefixElementImpl(prefixNode); |
| nameToPrefixMap[prefixName] = prefix; |
| } |
| importElement.prefix = prefix; |
| } |
| imports.add(importElement); |
| } else if (directive is ExportDirective) { |
| ExportDirective exportDirective = (directive as ExportDirective); |
| ExportElementImpl exportElement = new ExportElementImpl(); |
| exportElement.combinators = buildCombinators(exportDirective); |
| LibraryElement exportedLibrary = library.getExport(exportDirective).libraryElement; |
| if (exportedLibrary != null) { |
| exportElement.exportedLibrary = exportedLibrary; |
| directive.element = exportedLibrary; |
| } |
| exports.add(exportElement); |
| } |
| } |
| Source librarySource3 = library.librarySource; |
| if (!library.explicitlyImportsCore && _coreLibrarySource != librarySource3) { |
| ImportElementImpl importElement = new ImportElementImpl(); |
| importElement.importedLibrary = _coreLibrary.libraryElement; |
| importElement.synthetic = true; |
| imports.add(importElement); |
| } |
| LibraryElementImpl libraryElement3 = library.libraryElement; |
| libraryElement3.imports = new List.from(imports); |
| libraryElement3.exports = new List.from(exports); |
| } |
| } |
| /** |
| * Build element models for all of the libraries in the current cycle. |
| * @throws AnalysisException if any of the element models cannot be built |
| */ |
| void buildElementModels() { |
| for (Library library in _librariesInCycles) { |
| LibraryElementBuilder builder = new LibraryElementBuilder(this); |
| LibraryElementImpl libraryElement = builder.buildLibrary(library); |
| library.libraryElement = libraryElement; |
| } |
| } |
| /** |
| * Resolve the type hierarchy across all of the types declared in the libraries in the current |
| * cycle. |
| * @throws AnalysisException if any of the type hierarchies could not be resolved |
| */ |
| void buildTypeHierarchies() { |
| for (Library library in _librariesInCycles) { |
| for (Source source in library.compilationUnitSources) { |
| TypeResolverVisitor visitor = new TypeResolverVisitor(library, source, _typeProvider); |
| library.getAST(source).accept(visitor); |
| } |
| } |
| } |
| /** |
| * Compute a dependency map of libraries reachable from the given library. A dependency map is a |
| * table that maps individual libraries to a list of the libraries that either import or export |
| * those libraries. |
| * <p> |
| * This map is used to compute all of the libraries involved in a cycle that include the root |
| * library. Given that we only add libraries that are reachable from the root library, when we |
| * work backward we are guaranteed to only get libraries in the cycle. |
| * @param library the library currently being added to the dependency map |
| */ |
| Map<Library, List<Library>> computeDependencyMap(Library library) { |
| Map<Library, List<Library>> dependencyMap = new Map<Library, List<Library>>(); |
| addToDependencyMap(library, dependencyMap, new Set<Library>()); |
| return dependencyMap; |
| } |
| /** |
| * Return a collection containing all of the libraries reachable from the given library that are |
| * contained in a cycle that includes the given library. |
| * @param library the library that must be included in any cycles whose members are to be returned |
| * @return all of the libraries referenced by the given library that have a circular reference |
| * back to the given library |
| */ |
| Set<Library> computeLibrariesInCycles(Library library) { |
| Map<Library, List<Library>> dependencyMap = computeDependencyMap(library); |
| Set<Library> librariesInCycle = new Set<Library>(); |
| addLibrariesInCycle(library, librariesInCycle, dependencyMap); |
| return librariesInCycle; |
| } |
| /** |
| * Recursively traverse the libraries reachable from the given library, creating instances of the |
| * class {@link Library} to represent them, and record the references in the library objects. |
| * @param library the library to be processed to find libaries that have not yet been traversed |
| * @throws AnalysisException if some portion of the library graph could not be traversed |
| */ |
| void computeLibraryDependencies(Library library) { |
| bool explicitlyImportsCore = false; |
| CompilationUnit unit = library.definingCompilationUnit; |
| for (Directive directive in unit.directives) { |
| if (directive is ImportDirective) { |
| ImportDirective importDirective = (directive as ImportDirective); |
| Source importedSource = library.getSource(importDirective.uri); |
| if (importedSource == _coreLibrarySource) { |
| explicitlyImportsCore = true; |
| } |
| Library importedLibrary = _libraryMap[importedSource]; |
| if (importedLibrary == null) { |
| importedLibrary = createLibrary(importedSource); |
| computeLibraryDependencies(importedLibrary); |
| } |
| library.addImport(importDirective, importedLibrary); |
| } else if (directive is ExportDirective) { |
| ExportDirective exportDirective = (directive as ExportDirective); |
| Source exportedSource = library.getSource(exportDirective.uri); |
| Library exportedLibrary = _libraryMap[exportedSource]; |
| if (exportedLibrary == null) { |
| exportedLibrary = createLibrary(exportedSource); |
| computeLibraryDependencies(exportedLibrary); |
| } |
| library.addExport(exportDirective, exportedLibrary); |
| } |
| } |
| library.explicitlyImportsCore = explicitlyImportsCore; |
| if (!explicitlyImportsCore && _coreLibrarySource != library.librarySource) { |
| Library importedLibrary = _libraryMap[_coreLibrarySource]; |
| if (importedLibrary == null) { |
| importedLibrary = createLibrary(_coreLibrarySource); |
| computeLibraryDependencies(importedLibrary); |
| } |
| } |
| } |
| /** |
| * Create an object to represent the information about the library defined by the compilation unit |
| * with the given source. |
| * @param librarySource the source of the library's defining compilation unit |
| * @return the library object that was created |
| */ |
| Library createLibrary(Source librarySource) { |
| Library library = new Library(_analysisContext, _errorListener, librarySource); |
| _libraryMap[librarySource] = library; |
| return library; |
| } |
| /** |
| * Return an array containing the lexical identifiers associated with the nodes in the given list. |
| * @param names the AST nodes representing the identifiers |
| * @return the lexical identifiers associated with the nodes in the list |
| */ |
| List<String> getIdentifiers(NodeList<SimpleIdentifier> names) { |
| int count = names.length; |
| List<String> identifiers = new List<String>.fixedLength(count); |
| for (int i = 0; i < count; i++) { |
| identifiers[i] = names[i].name; |
| } |
| return identifiers; |
| } |
| /** |
| * As the final step in the process, record the resolved element models with the analysis context. |
| */ |
| void recordLibraryElements() { |
| Map<Source, LibraryElement> elementMap = new Map<Source, LibraryElement>(); |
| for (Library library in _librariesInCycles) { |
| elementMap[library.librarySource] = library.libraryElement; |
| } |
| _analysisContext.recordLibraryElements(elementMap); |
| } |
| /** |
| * Resolve the identifiers and perform type analysis in the libraries in the current cycle. |
| * @throws AnalysisException if any of the identifiers could not be resolved or if any of the |
| * libraries could not have their types analyzed |
| */ |
| void resolveReferencesAndTypes() { |
| for (Library library in _librariesInCycles) { |
| resolveReferencesAndTypes2(library); |
| } |
| } |
| /** |
| * Resolve the identifiers and perform type analysis in the given library. |
| * @param library the library to be resolved |
| * @throws AnalysisException if any of the identifiers could not be resolved or if the types in |
| * the library cannot be analyzed |
| */ |
| void resolveReferencesAndTypes2(Library library) { |
| for (Source source in library.compilationUnitSources) { |
| ResolverVisitor visitor = new ResolverVisitor(library, source, _typeProvider); |
| library.getAST(source).accept(visitor); |
| } |
| } |
| } |
| /** |
| * Instances of the class {@code ResolverVisitor} are used to resolve the nodes within a single |
| * compilation unit. |
| */ |
| class ResolverVisitor extends ScopedVisitor { |
| /** |
| * The object used to resolve the element associated with the current node. |
| */ |
| ElementResolver _elementResolver; |
| /** |
| * The object used to compute the type associated with the current node. |
| */ |
| StaticTypeAnalyzer _typeAnalyzer; |
| /** |
| * The class element representing the class containing the current node, or {@code null} if the |
| * current node is not contained in a class. |
| */ |
| ClassElement _enclosingClass = null; |
| /** |
| * The element representing the function containing the current node, or {@code null} if the |
| * current node is not contained in a function. |
| */ |
| ExecutableElement _enclosingFunction = null; |
| /** |
| * Initialize a newly created visitor to resolve the nodes in a compilation unit. |
| * @param library the library containing the compilation unit being resolved |
| * @param source the source representing the compilation unit being visited |
| * @param typeProvider the object used to access the types from the core library |
| */ |
| ResolverVisitor(Library library, Source source, TypeProvider typeProvider) : super(library, source, typeProvider) { |
| this._elementResolver = new ElementResolver(this); |
| this._typeAnalyzer = new StaticTypeAnalyzer(this); |
| } |
| Object visitClassDeclaration(ClassDeclaration node) { |
| ClassElement outerType = _enclosingClass; |
| try { |
| _enclosingClass = node.element; |
| _typeAnalyzer.thisType = _enclosingClass == null ? null : _enclosingClass.type; |
| super.visitClassDeclaration(node); |
| } finally { |
| _typeAnalyzer.thisType = outerType == null ? null : outerType.type; |
| _enclosingClass = outerType; |
| } |
| return null; |
| } |
| Object visitFunctionDeclaration(FunctionDeclaration node) { |
| ExecutableElement outerFunction = _enclosingFunction; |
| try { |
| SimpleIdentifier functionName = node.name; |
| _enclosingFunction = (functionName.element as ExecutableElement); |
| super.visitFunctionDeclaration(node); |
| } finally { |
| _enclosingFunction = outerFunction; |
| } |
| return null; |
| } |
| Object visitFunctionExpression(FunctionExpression node) { |
| ExecutableElement outerFunction = _enclosingFunction; |
| try { |
| _enclosingFunction = node.element; |
| super.visitFunctionExpression(node); |
| } finally { |
| _enclosingFunction = outerFunction; |
| } |
| return null; |
| } |
| Object visitLibraryIdentifier(LibraryIdentifier node) => null; |
| Object visitMethodDeclaration(MethodDeclaration node) { |
| ExecutableElement outerFunction = _enclosingFunction; |
| try { |
| _enclosingFunction = node.element; |
| super.visitMethodDeclaration(node); |
| } finally { |
| _enclosingFunction = outerFunction; |
| } |
| return null; |
| } |
| Object visitNode(ASTNode node) { |
| node.visitChildren(this); |
| node.accept(_elementResolver); |
| node.accept(_typeAnalyzer); |
| return null; |
| } |
| Object visitPrefixedIdentifier(PrefixedIdentifier node) { |
| SimpleIdentifier prefix6 = node.prefix; |
| if (prefix6 != null) { |
| prefix6.accept(this); |
| } |
| node.accept(_elementResolver); |
| node.accept(_typeAnalyzer); |
| return null; |
| } |
| Object visitPropertyAccess(PropertyAccess node) { |
| Expression target5 = node.target; |
| if (target5 != null) { |
| target5.accept(this); |
| } |
| node.accept(_elementResolver); |
| node.accept(_typeAnalyzer); |
| return null; |
| } |
| Object visitRedirectingConstructorInvocation(RedirectingConstructorInvocation node) { |
| ArgumentList argumentList11 = node.argumentList; |
| if (argumentList11 != null) { |
| argumentList11.accept(this); |
| } |
| node.accept(_elementResolver); |
| node.accept(_typeAnalyzer); |
| return null; |
| } |
| Object visitSuperConstructorInvocation(SuperConstructorInvocation node) { |
| ArgumentList argumentList12 = node.argumentList; |
| if (argumentList12 != null) { |
| argumentList12.accept(this); |
| } |
| node.accept(_elementResolver); |
| node.accept(_typeAnalyzer); |
| return null; |
| } |
| Object visitTypeName(TypeName node) => null; |
| /** |
| * Return the class element representing the class containing the current node, or {@code null} if |
| * the current node is not contained in a class. |
| * @return the class element representing the class containing the current node |
| */ |
| ClassElement get enclosingClass => _enclosingClass; |
| /** |
| * Return the element representing the function containing the current node, or {@code null} if |
| * the current node is not contained in a function. |
| * @return the element representing the function containing the current node |
| */ |
| ExecutableElement get enclosingFunction => _enclosingFunction; |
| } |
| /** |
| * The abstract class {@code ScopedVisitor} maintains name and label scopes as an AST structure is |
| * being visited. |
| */ |
| abstract class ScopedVisitor extends GeneralizingASTVisitor<Object> { |
| /** |
| * The element for the library containing the compilation unit being visited. |
| */ |
| LibraryElement _definingLibrary; |
| /** |
| * The source representing the compilation unit being visited. |
| */ |
| Source _source; |
| /** |
| * The error listener that will be informed of any errors that are found during resolution. |
| */ |
| AnalysisErrorListener _errorListener; |
| /** |
| * The scope used to resolve identifiers. |
| */ |
| Scope _nameScope; |
| /** |
| * The object used to access the types from the core library. |
| */ |
| TypeProvider _typeProvider; |
| /** |
| * The scope used to resolve labels for {@code break} and {@code continue} statements, or{@code null} if no labels have been defined in the current context. |
| */ |
| LabelScope _labelScope; |
| /** |
| * Initialize a newly created visitor to resolve the nodes in a compilation unit. |
| * @param library the library containing the compilation unit being resolved |
| * @param source the source representing the compilation unit being visited |
| * @param typeProvider the object used to access the types from the core library |
| */ |
| ScopedVisitor(Library library, Source source, TypeProvider typeProvider) { |
| this._definingLibrary = library.libraryElement; |
| this._source = source; |
| LibraryScope libraryScope2 = library.libraryScope; |
| this._errorListener = libraryScope2.errorListener; |
| this._nameScope = libraryScope2; |
| this._typeProvider = typeProvider; |
| } |
| /** |
| * Return the library element for the library containing the compilation unit being resolved. |
| * @return the library element for the library containing the compilation unit being resolved |
| */ |
| LibraryElement get definingLibrary => _definingLibrary; |
| /** |
| * Return the object used to access the types from the core library. |
| * @return the object used to access the types from the core library |
| */ |
| TypeProvider get typeProvider => _typeProvider; |
| Object visitBlock(Block node) { |
| Scope outerScope = _nameScope; |
| _nameScope = new EnclosedScope(_nameScope); |
| try { |
| super.visitBlock(node); |
| } finally { |
| _nameScope = outerScope; |
| } |
| return null; |
| } |
| Object visitClassDeclaration(ClassDeclaration node) { |
| Scope outerScope = _nameScope; |
| try { |
| _nameScope = new ClassScope(_nameScope, node.element); |
| super.visitClassDeclaration(node); |
| } finally { |
| _nameScope = outerScope; |
| } |
| return null; |
| } |
| Object visitClassTypeAlias(ClassTypeAlias node) { |
| Scope outerScope = _nameScope; |
| try { |
| _nameScope = new ClassScope(_nameScope, node.element); |
| super.visitClassTypeAlias(node); |
| } finally { |
| _nameScope = outerScope; |
| } |
| return null; |
| } |
| Object visitConstructorDeclaration(ConstructorDeclaration node) { |
| Scope outerScope = _nameScope; |
| try { |
| _nameScope = new FunctionScope(_nameScope, node.element); |
| super.visitConstructorDeclaration(node); |
| } finally { |
| _nameScope = outerScope; |
| } |
| return null; |
| } |
| Object visitDoStatement(DoStatement node) { |
| LabelScope outerScope = _labelScope; |
| _labelScope = new LabelScope.con1(outerScope, false, false); |
| try { |
| super.visitDoStatement(node); |
| } finally { |
| _labelScope = outerScope; |
| } |
| return null; |
| } |
| Object visitForEachStatement(ForEachStatement node) { |
| LabelScope outerScope = _labelScope; |
| _labelScope = new LabelScope.con1(outerScope, false, false); |
| try { |
| super.visitForEachStatement(node); |
| } finally { |
| _labelScope = outerScope; |
| } |
| return null; |
| } |
| Object visitForStatement(ForStatement node) { |
| LabelScope outerScope = _labelScope; |
| _labelScope = new LabelScope.con1(outerScope, false, false); |
| try { |
| super.visitForStatement(node); |
| } finally { |
| _labelScope = outerScope; |
| } |
| return null; |
| } |
| Object visitFunctionDeclaration(FunctionDeclaration node) { |
| FunctionElement function = node.element; |
| Scope outerScope = _nameScope; |
| try { |
| _nameScope = new FunctionScope(_nameScope, function); |
| super.visitFunctionDeclaration(node); |
| } finally { |
| _nameScope = outerScope; |
| } |
| _nameScope.define(function); |
| return null; |
| } |
| Object visitFunctionExpression(FunctionExpression node) { |
| Scope outerScope = _nameScope; |
| try { |
| _nameScope = new FunctionScope(_nameScope, node.element); |
| super.visitFunctionExpression(node); |
| } finally { |
| _nameScope = outerScope; |
| } |
| return null; |
| } |
| Object visitFunctionTypeAlias(FunctionTypeAlias node) { |
| Scope outerScope = _nameScope; |
| try { |
| _nameScope = new FunctionTypeScope(_nameScope, node.element); |
| super.visitFunctionTypeAlias(node); |
| } finally { |
| _nameScope = outerScope; |
| } |
| return null; |
| } |
| Object visitLabeledStatement(LabeledStatement node) { |
| LabelScope outerScope = addScopesFor(node.labels); |
| try { |
| super.visitLabeledStatement(node); |
| } finally { |
| _labelScope = outerScope; |
| } |
| return null; |
| } |
| Object visitMethodDeclaration(MethodDeclaration node) { |
| Scope outerScope = _nameScope; |
| try { |
| _nameScope = new FunctionScope(_nameScope, node.element); |
| super.visitMethodDeclaration(node); |
| } finally { |
| _nameScope = outerScope; |
| } |
| return null; |
| } |
| Object visitSwitchCase(SwitchCase node) { |
| node.expression.accept(this); |
| LabelScope outerLabelScope = addScopesFor(node.labels); |
| Scope outerNameScope = _nameScope; |
| _nameScope = new EnclosedScope(_nameScope); |
| try { |
| node.statements.accept(this); |
| } finally { |
| _nameScope = outerNameScope; |
| _labelScope = outerLabelScope; |
| } |
| return null; |
| } |
| Object visitSwitchDefault(SwitchDefault node) { |
| LabelScope outerLabelScope = addScopesFor(node.labels); |
| Scope outerNameScope = _nameScope; |
| _nameScope = new EnclosedScope(_nameScope); |
| try { |
| node.statements.accept(this); |
| } finally { |
| _nameScope = outerNameScope; |
| _labelScope = outerLabelScope; |
| } |
| return null; |
| } |
| Object visitSwitchStatement(SwitchStatement node) { |
| LabelScope outerScope = _labelScope; |
| _labelScope = new LabelScope.con1(outerScope, true, false); |
| for (SwitchMember member in node.members) { |
| for (Label label in member.labels) { |
| SimpleIdentifier labelName = label.label; |
| LabelElement labelElement = (labelName.element as LabelElement); |
| _labelScope = new LabelScope.con2(outerScope, labelName.name, labelElement); |
| } |
| } |
| try { |
| super.visitSwitchStatement(node); |
| } finally { |
| _labelScope = outerScope; |
| } |
| return null; |
| } |
| Object visitVariableDeclaration(VariableDeclaration node) { |
| if (node.parent.parent is! TopLevelVariableDeclaration) { |
| VariableElement element19 = node.element; |
| if (element19 != null) { |
| _nameScope.define(element19); |
| } |
| } |
| super.visitVariableDeclaration(node); |
| return null; |
| } |
| Object visitWhileStatement(WhileStatement node) { |
| LabelScope outerScope = _labelScope; |
| _labelScope = new LabelScope.con1(outerScope, false, false); |
| try { |
| super.visitWhileStatement(node); |
| } finally { |
| _labelScope = outerScope; |
| } |
| return null; |
| } |
| /** |
| * Return the label scope in which the current node is being resolved. |
| * @return the label scope in which the current node is being resolved |
| */ |
| LabelScope get labelScope => _labelScope; |
| /** |
| * Return the name scope in which the current node is being resolved. |
| * @return the name scope in which the current node is being resolved |
| */ |
| Scope get nameScope => _nameScope; |
| /** |
| * Report an error with the given error code and arguments. |
| * @param errorCode the error code of the error to be reported |
| * @param node the node specifying the location of the error |
| * @param arguments the arguments to the error, used to compose the error message |
| */ |
| void reportError(ResolverErrorCode errorCode, ASTNode node, List<Object> arguments) { |
| _errorListener.onError(new AnalysisError.con2(_source, node.offset, node.length, errorCode, [arguments])); |
| } |
| /** |
| * Report an error with the given error code and arguments. |
| * @param errorCode the error code of the error to be reported |
| * @param token the token specifying the location of the error |
| * @param arguments the arguments to the error, used to compose the error message |
| */ |
| void reportError2(ResolverErrorCode errorCode, Token token, List<Object> arguments) { |
| _errorListener.onError(new AnalysisError.con2(_source, token.offset, token.length, errorCode, [arguments])); |
| } |
| /** |
| * Add scopes for each of the given labels. |
| * @param labels the labels for which new scopes are to be added |
| * @return the scope that was in effect before the new scopes were added |
| */ |
| LabelScope addScopesFor(NodeList<Label> labels) { |
| LabelScope outerScope = _labelScope; |
| for (Label label in labels) { |
| SimpleIdentifier labelNameNode = label.label; |
| String labelName = labelNameNode.name; |
| LabelElement labelElement = (labelNameNode.element as LabelElement); |
| _labelScope = new LabelScope.con2(_labelScope, labelName, labelElement); |
| } |
| return outerScope; |
| } |
| } |
| /** |
| * Instances of the class {@code StaticTypeAnalyzer} perform two type-related tasks. First, they |
| * compute the static type of every expression. Second, they look for any static type errors or |
| * warnings that might need to be generated. The requirements for the type analyzer are: |
| * <ol> |
| * <li>Every element that refers to types should be fully populated. |
| * <li>Every node representing an expression should be resolved to the Type of the expression.</li> |
| * </ol> |
| */ |
| class StaticTypeAnalyzer extends SimpleASTVisitor<Object> { |
| /** |
| * The resolver driving this participant. |
| */ |
| ResolverVisitor _resolver; |
| /** |
| * The object providing access to the types defined by the language. |
| */ |
| TypeProvider _typeProvider; |
| /** |
| * The type representing the class containing the nodes being analyzed, or {@code null} if the |
| * nodes are not within a class. |
| */ |
| InterfaceType _thisType; |
| /** |
| * Initialize a newly created type analyzer. |
| * @param resolver the resolver driving this participant |
| */ |
| StaticTypeAnalyzer(ResolverVisitor resolver) { |
| this._resolver = resolver; |
| _typeProvider = resolver.typeProvider; |
| } |
| /** |
| * Set the type of the class being analyzed to the given type. |
| * @param thisType the type representing the class containing the nodes being analyzed |
| */ |
| void set thisType(InterfaceType thisType2) { |
| this._thisType = thisType2; |
| } |
| /** |
| * The Dart Language Specification, 12.5: <blockquote>The static type of a string literal is{@code String}.</blockquote> |
| */ |
| Object visitAdjacentStrings(AdjacentStrings node) => recordType(node, _typeProvider.stringType); |
| /** |
| * The Dart Language Specification, 12.33: <blockquote>The static type of an argument definition |
| * test is {@code bool}.</blockquote> |
| */ |
| Object visitArgumentDefinitionTest(ArgumentDefinitionTest node) => recordType(node, _typeProvider.boolType); |
| /** |
| * The Dart Language Specification, 12.32: <blockquote>... the cast expression <i>e as T</i> ... |
| * <p> |
| * It is a static warning if <i>T</i> does not denote a type available in the current lexical |
| * scope. |
| * <p> |
| * The static type of a cast expression <i>e as T</i> is <i>T</i>.</blockquote> |
| */ |
| Object visitAsExpression(AsExpression node) => recordType(node, getType2(node.type)); |
| /** |
| * The Dart Language Specification, 12.18: <blockquote> ... an assignment <i>a</i> of the form |
| * <i>v = e</i> ... |
| * <p> |
| * It is a static type warning if the static type of <i>e</i> may not be assigned to the static |
| * type of <i>v</i>. |
| * <p> |
| * The static type of the expression <i>v = e</i> is the static type of <i>e</i>. |
| * <p> |
| * ... an assignment of the form <i>C.v = e</i> ... |
| * <p> |
| * It is a static type warning if the static type of <i>e</i> may not be assigned to the static |
| * type of <i>C.v</i>. |
| * <p> |
| * The static type of the expression <i>C.v = e</i> is the static type of <i>e</i>. |
| * <p> |
| * ... an assignment of the form <i>e<sub>1</sub>.v = e<sub>2</sub></i> ... |
| * <p> |
| * Let <i>T</i> be the static type of <i>e<sub>1</sub></i>. It is a static type warning if |
| * <i>T</i> does not have an accessible instance setter named <i>v=</i>. It is a static type |
| * warning if the static type of <i>e<sub>2</sub></i> may not be assigned to <i>T</i>. |
| * <p> |
| * The static type of the expression <i>e<sub>1</sub>.v = e<sub>2</sub></i> is the static type of |
| * <i>e<sub>2</sub></i>. |
| * <p> |
| * ... an assignment of the form <i>e<sub>1</sub>[e<sub>2</sub>] = e<sub>3</sub></i> ... |
| * <p> |
| * The static type of the expression <i>e<sub>1</sub>[e<sub>2</sub>] = e<sub>3</sub></i> is the |
| * static type of <i>e<sub>3</sub></i>. |
| * <p> |
| * A compound assignment of the form <i>v op= e</i> is equivalent to <i>v = v op e</i>. A compound |
| * assignment of the form <i>C.v op= e</i> is equivalent to <i>C.v = C.v op e</i>. A compound |
| * assignment of the form <i>e<sub>1</sub>.v op= e<sub>2</sub></i> is equivalent to <i>((x) => x.v |
| * = x.v op e<sub>2</sub>)(e<sub>1</sub>)</i> where <i>x</i> is a variable that is not used in |
| * <i>e<sub>2</sub></i>. A compound assignment of the form <i>e<sub>1</sub>[e<sub>2</sub>] op= |
| * e<sub>3</sub></i> is equivalent to <i>((a, i) => a[i] = a[i] op e<sub>3</sub>)(e<sub>1</sub>, |
| * e<sub>2</sub>)</i> where <i>a</i> and <i>i</i> are a variables that are not used in |
| * <i>e<sub>3</sub></i>. </blockquote> |
| */ |
| Object visitAssignmentExpression(AssignmentExpression node) { |
| TokenType operator11 = node.operator.type; |
| if (operator11 != TokenType.EQ) { |
| return recordReturnType(node, node.element); |
| } |
| Type2 leftType = getType(node.leftHandSide); |
| Type2 rightType = getType(node.rightHandSide); |
| if (!rightType.isAssignableTo(leftType)) { |
| } |
| return recordType(node, rightType); |
| } |
| /** |
| * The Dart Language Specification, 12.20: <blockquote>The static type of a logical boolean |
| * expression is {@code bool}.</blockquote> |
| * <p> |
| * The Dart Language Specification, 12.21:<blockquote>A bitwise expression of the form |
| * <i>e<sub>1</sub> op e<sub>2</sub></i> is equivalent to the method invocation |
| * <i>e<sub>1</sub>.op(e<sub>2</sub>)</i>. A bitwise expression of the form <i>super op |
| * e<sub>2</sub></i> is equivalent to the method invocation |
| * <i>super.op(e<sub>2</sub>)</i>.</blockquote> |
| * <p> |
| * The Dart Language Specification, 12.22: <blockquote>The static type of an equality expression |
| * is {@code bool}.</blockquote> |
| * <p> |
| * The Dart Language Specification, 12.23: <blockquote>A relational expression of the form |
| * <i>e<sub>1</sub> op e<sub>2</sub></i> is equivalent to the method invocation |
| * <i>e<sub>1</sub>.op(e<sub>2</sub>)</i>. A relational expression of the form <i>super op |
| * e<sub>2</sub></i> is equivalent to the method invocation |
| * <i>super.op(e<sub>2</sub>)</i>.</blockquote> |
| * <p> |
| * The Dart Language Specification, 12.24: <blockquote>A shift expression of the form |
| * <i>e<sub>1</sub> op e<sub>2</sub></i> is equivalent to the method invocation |
| * <i>e<sub>1</sub>.op(e<sub>2</sub>)</i>. A shift expression of the form <i>super op |
| * e<sub>2</sub></i> is equivalent to the method invocation |
| * <i>super.op(e<sub>2</sub>)</i>.</blockquote> |
| * <p> |
| * The Dart Language Specification, 12.25: <blockquote>An additive expression of the form |
| * <i>e<sub>1</sub> op e<sub>2</sub></i> is equivalent to the method invocation |
| * <i>e<sub>1</sub>.op(e<sub>2</sub>)</i>. An additive expression of the form <i>super op |
| * e<sub>2</sub></i> is equivalent to the method invocation |
| * <i>super.op(e<sub>2</sub>)</i>.</blockquote> |
| * <p> |
| * The Dart Language Specification, 12.26: <blockquote>A multiplicative expression of the form |
| * <i>e<sub>1</sub> op e<sub>2</sub></i> is equivalent to the method invocation |
| * <i>e<sub>1</sub>.op(e<sub>2</sub>)</i>. A multiplicative expression of the form <i>super op |
| * e<sub>2</sub></i> is equivalent to the method invocation |
| * <i>super.op(e<sub>2</sub>)</i>.</blockquote> |
| */ |
| Object visitBinaryExpression(BinaryExpression node) { |
| TokenType operator12 = node.operator.type; |
| if (operator12 == TokenType.AMPERSAND_AMPERSAND || operator12 == TokenType.BAR_BAR || operator12 == TokenType.EQ_EQ || operator12 == TokenType.BANG_EQ) { |
| return recordType(node, _typeProvider.boolType); |
| } |
| return recordReturnType(node, node.element); |
| } |
| /** |
| * The Dart Language Specification, 12.4: <blockquote>The static type of a boolean literal is{@code bool}.</blockquote> |
| */ |
| Object visitBooleanLiteral(BooleanLiteral node) => recordType(node, _typeProvider.boolType); |
| /** |
| * The Dart Language Specification, 12.15.2: <blockquote>A cascaded method invocation expression |
| * of the form <i>e..suffix</i> is equivalent to the expression <i>(t) {t.suffix; return |
| * t;}(e)</i>.</blockquote> |
| */ |
| Object visitCascadeExpression(CascadeExpression node) => recordType(node, getType(node.target)); |
| /** |
| * The Dart Language Specification, 12.19: <blockquote> ... a conditional expression <i>c</i> of |
| * the form <i>e<sub>1</sub> ? e<sub>2</sub> : e<sub>3</sub></i> ... |
| * <p> |
| * It is a static type warning if the type of e<sub>1</sub> may not be assigned to {@code bool}. |
| * <p> |
| * The static type of <i>c</i> is the least upper bound of the static type of <i>e<sub>2</sub></i> |
| * and the static type of <i>e<sub>3</sub></i>.</blockquote> |
| */ |
| Object visitConditionalExpression(ConditionalExpression node) { |
| Type2 conditionType = getType(node.condition); |
| if (conditionType != null && !conditionType.isAssignableTo(_typeProvider.boolType)) { |
| _resolver.reportError(ResolverErrorCode.NON_BOOLEAN_CONDITION, node.condition, []); |
| } |
| Type2 thenType = getType(node.thenExpression); |
| Type2 elseType = getType(node.elseExpression); |
| if (thenType == null) { |
| return recordType(node, _typeProvider.dynamicType); |
| } |
| Type2 resultType = thenType.getLeastUpperBound(elseType); |
| return recordType(node, resultType); |
| } |
| /** |
| * The Dart Language Specification, 12.3: <blockquote>The static type of a literal double is{@code double}.</blockquote> |
| */ |
| Object visitDoubleLiteral(DoubleLiteral node) => recordType(node, _typeProvider.doubleType); |
| /** |
| * The Dart Language Specification, 12.9: <blockquote>The static type of a function literal of the |
| * form <i>(T<sub>1</sub> a<sub>1</sub>, …, T<sub>n</sub> a<sub>n</sub>, [T<sub>n+1</sub> |
| * x<sub>n+1</sub> = d1, …, T<sub>n+k</sub> x<sub>n+k</sub> = dk]) => e</i> is |
| * <i>(T<sub>1</sub>, …, Tn, [T<sub>n+1</sub> x<sub>n+1</sub>, …, T<sub>n+k</sub> |
| * x<sub>n+k</sub>]) → T<sub>0</sub></i>, where <i>T<sub>0</sub></i> is the static type of |
| * <i>e</i>. In any case where <i>T<sub>i</sub>, 1 <= i <= n</i>, is not specified, it is |
| * considered to have been specified as dynamic. |
| * <p> |
| * The static type of a function literal of the form <i>(T<sub>1</sub> a<sub>1</sub>, …, |
| * T<sub>n</sub> a<sub>n</sub>, {T<sub>n+1</sub> x<sub>n+1</sub> : d1, …, T<sub>n+k</sub> |
| * x<sub>n+k</sub> : dk}) => e</i> is <i>(T<sub>1</sub>, …, T<sub>n</sub>, {T<sub>n+1</sub> |
| * x<sub>n+1</sub>, …, T<sub>n+k</sub> x<sub>n+k</sub>}) → T<sub>0</sub></i>, where |
| * <i>T<sub>0</sub></i> is the static type of <i>e</i>. In any case where <i>T<sub>i</sub>, 1 |
| * <= i <= n</i>, is not specified, it is considered to have been specified as dynamic. |
| * <p> |
| * The static type of a function literal of the form <i>(T<sub>1</sub> a<sub>1</sub>, …, |
| * T<sub>n</sub> a<sub>n</sub>, [T<sub>n+1</sub> x<sub>n+1</sub> = d1, …, T<sub>n+k</sub> |
| * x<sub>n+k</sub> = dk]) {s}</i> is <i>(T<sub>1</sub>, …, T<sub>n</sub>, [T<sub>n+1</sub> |
| * x<sub>n+1</sub>, …, T<sub>n+k</sub> x<sub>n+k</sub>]) → dynamic</i>. In any case |
| * where <i>T<sub>i</sub>, 1 <= i <= n</i>, is not specified, it is considered to have been |
| * specified as dynamic. |
| * <p> |
| * The static type of a function literal of the form <i>(T<sub>1</sub> a<sub>1</sub>, …, |
| * T<sub>n</sub> a<sub>n</sub>, {T<sub>n+1</sub> x<sub>n+1</sub> : d1, …, T<sub>n+k</sub> |
| * x<sub>n+k</sub> : dk}) {s}</i> is <i>(T<sub>1</sub>, …, T<sub>n</sub>, {T<sub>n+1</sub> |
| * x<sub>n+1</sub>, …, T<sub>n+k</sub> x<sub>n+k</sub>}) → dynamic</i>. In any case |
| * where <i>T<sub>i</sub>, 1 <= i <= n</i>, is not specified, it is considered to have been |
| * specified as dynamic.</blockquote> |
| */ |
| Object visitFunctionExpression(FunctionExpression node) { |
| FunctionTypeImpl functionType = (node.element.type as FunctionTypeImpl); |
| setTypeInformation(functionType, computeReturnType(node), node.parameters); |
| return recordType(node, functionType); |
| } |
| /** |
| * The Dart Language Specification, 12.14.4: <blockquote>A function expression invocation <i>i</i> |
| * has the form <i>e<sub>f</sub>(a<sub>1</sub>, …, a<sub>n</sub>, x<sub>n+1</sub>: |
| * a<sub>n+1</sub>, …, x<sub>n+k</sub>: a<sub>n+k</sub>)</i>, where <i>e<sub>f</sub></i> is |
| * an expression. |
| * <p> |
| * It is a static type warning if the static type <i>F</i> of <i>e<sub>f</sub></i> may not be |
| * assigned to a function type. |
| * <p> |
| * If <i>F</i> is not a function type, the static type of <i>i</i> is dynamic. Otherwise the |
| * static type of <i>i</i> is the declared return type of <i>F</i>.</blockquote> |
| */ |
| Object visitFunctionExpressionInvocation(FunctionExpressionInvocation node) => recordReturnType(node, node.element); |
| /** |
| * The Dart Language Specification, 12.29: <blockquote>An assignable expression of the form |
| * <i>e<sub>1</sub>[e<sub>2</sub>]</i> is evaluated as a method invocation of the operator method |
| * <i>[]</i> on <i>e<sub>1</sub></i> with argument <i>e<sub>2</sub></i>.</blockquote> |
| */ |
| Object visitIndexExpression(IndexExpression node) => recordReturnType(node, node.element); |
| /** |
| * The Dart Language Specification, 12.11.1: <blockquote>The static type of a new expression of |
| * either the form <i>new T.id(a<sub>1</sub>, …, a<sub>n</sub>)</i> or the form <i>new |
| * T(a<sub>1</sub>, …, a<sub>n</sub>)</i> is <i>T</i>.</blockquote> |
| * <p> |
| * The Dart Language Specification, 12.11.2: <blockquote>The static type of a constant object |
| * expression of either the form <i>const T.id(a<sub>1</sub>, …, a<sub>n</sub>)</i> or the |
| * form <i>const T(a<sub>1</sub>, …, a<sub>n</sub>)</i> is <i>T</i>. </blockquote> |
| */ |
| Object visitInstanceCreationExpression(InstanceCreationExpression node) => recordReturnType(node, node.element); |
| /** |
| * The Dart Language Specification, 12.3: <blockquote>The static type of an integer literal is{@code int}.</blockquote> |
| */ |
| Object visitIntegerLiteral(IntegerLiteral node) => recordType(node, _typeProvider.intType); |
| /** |
| * The Dart Language Specification, 12.31: <blockquote>It is a static warning if <i>T</i> does not |
| * denote a type available in the current lexical scope. |
| * <p> |
| * The static type of an is-expression is {@code bool}.</blockquote> |
| */ |
| Object visitIsExpression(IsExpression node) => recordType(node, _typeProvider.boolType); |
| /** |
| * The Dart Language Specification, 12.6: <blockquote>The static type of a list literal of the |
| * form <i><b>const</b> <E>[e<sub>1</sub>, …, e<sub>n</sub>]</i> or the form |
| * <i><E>[e<sub>1</sub>, …, e<sub>n</sub>]</i> is {@code List<E>}. The static |
| * type a list literal of the form <i><b>const</b> [e<sub>1</sub>, …, e<sub>n</sub>]</i> or |
| * the form <i>[e<sub>1</sub>, …, e<sub>n</sub>]</i> is {@code List<dynamic>}.</blockquote> |
| */ |
| Object visitListLiteral(ListLiteral node) { |
| TypeArgumentList typeArguments8 = node.typeArguments; |
| if (typeArguments8 != null) { |
| NodeList<TypeName> arguments3 = typeArguments8.arguments; |
| if (arguments3 != null && arguments3.length == 1) { |
| TypeName argumentType = arguments3[0]; |
| return recordType(node, _typeProvider.listType.substitute5(<Type2> [getType2(argumentType)])); |
| } |
| } |
| return recordType(node, _typeProvider.listType.substitute5(<Type2> [_typeProvider.dynamicType])); |
| } |
| /** |
| * The Dart Language Specification, 12.7: <blockquote>The static type of a map literal of the form |
| * <i><b>const</b> <String, V> {k<sub>1</sub>:e<sub>1</sub>, …, |
| * k<sub>n</sub>:e<sub>n</sub>}</i> or the form <i><String, V> {k<sub>1</sub>:e<sub>1</sub>, |
| * …, k<sub>n</sub>:e<sub>n</sub>}</i> is {@code Map<String, V>}. The static type a |
| * map literal of the form <i><b>const</b> {k<sub>1</sub>:e<sub>1</sub>, …, |
| * k<sub>n</sub>:e<sub>n</sub>}</i> or the form <i>{k<sub>1</sub>:e<sub>1</sub>, …, |
| * k<sub>n</sub>:e<sub>n</sub>}</i> is {@code Map<String, dynamic>}. |
| * <p> |
| * It is a compile-time error if the first type argument to a map literal is not |
| * <i>String</i>.</blockquote> |
| */ |
| Object visitMapLiteral(MapLiteral node) { |
| TypeArgumentList typeArguments9 = node.typeArguments; |
| if (typeArguments9 != null) { |
| NodeList<TypeName> arguments4 = typeArguments9.arguments; |
| if (arguments4 != null && arguments4.length == 2) { |
| TypeName keyType = arguments4[0]; |
| if (keyType != _typeProvider.stringType) { |
| } |
| TypeName valueType = arguments4[1]; |
| return recordType(node, _typeProvider.mapType.substitute5(<Type2> [_typeProvider.stringType, getType2(valueType)])); |
| } |
| } |
| return recordType(node, _typeProvider.mapType.substitute5(<Type2> [_typeProvider.stringType, _typeProvider.dynamicType])); |
| } |
| /** |
| * The Dart Language Specification, 12.15.1: <blockquote>An ordinary method invocation <i>i</i> |
| * has the form <i>o.m(a<sub>1</sub>, …, a<sub>n</sub>, x<sub>n+1</sub>: a<sub>n+1</sub>, |
| * …, x<sub>n+k</sub>: a<sub>n+k</sub>)</i>. |
| * <p> |
| * Let <i>T</i> be the static type of <i>o</i>. It is a static type warning if <i>T</i> does not |
| * have an accessible instance member named <i>m</i>. If <i>T.m</i> exists, it is a static warning |
| * if the type <i>F</i> of <i>T.m</i> may not be assigned to a function type. |
| * <p> |
| * If <i>T.m</i> does not exist, or if <i>F</i> is not a function type, the static type of |
| * <i>i</i> is dynamic. Otherwise the static type of <i>i</i> is the declared return type of |
| * <i>F</i>.</blockquote> |
| * <p> |
| * The Dart Language Specification, 11.15.3: <blockquote>A static method invocation <i>i</i> has |
| * the form <i>C.m(a<sub>1</sub>, …, a<sub>n</sub>, x<sub>n+1</sub>: a<sub>n+1</sub>, |
| * …, x<sub>n+k</sub>: a<sub>n+k</sub>)</i>. |
| * <p> |
| * It is a static type warning if the type <i>F</i> of <i>C.m</i> may not be assigned to a |
| * function type. |
| * <p> |
| * If <i>F</i> is not a function type, or if <i>C.m</i> does not exist, the static type of i is |
| * dynamic. Otherwise the static type of <i>i</i> is the declared return type of |
| * <i>F</i>.</blockquote> |
| * <p> |
| * The Dart Language Specification, 11.15.4: <blockquote>A super method invocation <i>i</i> has |
| * the form <i>super.m(a<sub>1</sub>, …, a<sub>n</sub>, x<sub>n+1</sub>: a<sub>n+1</sub>, |
| * …, x<sub>n+k</sub>: a<sub>n+k</sub>)</i>. |
| * <p> |
| * It is a static type warning if <i>S</i> does not have an accessible instance member named m. If |
| * <i>S.m</i> exists, it is a static warning if the type <i>F</i> of <i>S.m</i> may not be |
| * assigned to a function type. |
| * <p> |
| * If <i>S.m</i> does not exist, or if <i>F</i> is not a function type, the static type of |
| * <i>i</i> is dynamic. Otherwise the static type of <i>i</i> is the declared return type of |
| * <i>F</i>.</blockquote> |
| */ |
| Object visitMethodInvocation(MethodInvocation node) => recordReturnType(node, node.methodName.element); |
| Object visitNamedExpression(NamedExpression node) => recordType(node, getType(node.expression)); |
| /** |
| * The Dart Language Specification, 12.2: <blockquote>The static type of {@code null} is bottom. |
| * </blockquote> |
| */ |
| Object visitNullLiteral(NullLiteral node) => recordType(node, _typeProvider.bottomType); |
| Object visitParenthesizedExpression(ParenthesizedExpression node) => recordType(node, getType(node.expression)); |
| /** |
| * The Dart Language Specification, 12.28: <blockquote>A postfix expression of the form |
| * <i>v++</i>, where <i>v</i> is an identifier, is equivalent to <i>(){var r = v; v = r + 1; |
| * return r}()</i>. |
| * <p> |
| * A postfix expression of the form <i>C.v++</i> is equivalent to <i>(){var r = C.v; C.v = r + 1; |
| * return r}()</i>. |
| * <p> |
| * A postfix expression of the form <i>e1.v++</i> is equivalent to <i>(x){var r = x.v; x.v = r + |
| * 1; return r}(e1)</i>. |
| * <p> |
| * A postfix expression of the form <i>e1[e2]++</i> is equivalent to <i>(a, i){var r = a[i]; a[i] |
| * = r + 1; return r}(e1, e2)</i> |
| * <p> |
| * A postfix expression of the form <i>v--</i>, where <i>v</i> is an identifier, is equivalent to |
| * <i>(){var r = v; v = r - 1; return r}()</i>. |
| * <p> |
| * A postfix expression of the form <i>C.v--</i> is equivalent to <i>(){var r = C.v; C.v = r - 1; |
| * return r}()</i>. |
| * <p> |
| * A postfix expression of the form <i>e1.v--</i> is equivalent to <i>(x){var r = x.v; x.v = r - |
| * 1; return r}(e1)</i>. |
| * <p> |
| * A postfix expression of the form <i>e1[e2]--</i> is equivalent to <i>(a, i){var r = a[i]; a[i] |
| * = r - 1; return r}(e1, e2)</i></blockquote> |
| */ |
| Object visitPostfixExpression(PostfixExpression node) => recordType(node, getType(node.operand)); |
| /** |
| * See {@link #visitSimpleIdentifier(SimpleIdentifier)}. |
| */ |
| Object visitPrefixedIdentifier(PrefixedIdentifier node) { |
| SimpleIdentifier prefixedIdentifier = node.identifier; |
| Element element20 = prefixedIdentifier.element; |
| if (element20 is VariableElement) { |
| Type2 variableType = ((element20 as VariableElement)).type; |
| recordType(prefixedIdentifier, variableType); |
| return recordType(node, variableType); |
| } else if (element20 is PropertyAccessorElement) { |
| Type2 propertyType = ((element20 as PropertyAccessorElement)).type.returnType; |
| recordType(prefixedIdentifier, propertyType); |
| return recordType(node, propertyType); |
| } else if (element20 is MethodElement) { |
| Type2 returnType = ((element20 as MethodElement)).type; |
| recordType(prefixedIdentifier, returnType); |
| return recordType(node, returnType); |
| } else { |
| } |
| recordType(prefixedIdentifier, _typeProvider.dynamicType); |
| return recordType(node, _typeProvider.dynamicType); |
| } |
| /** |
| * The Dart Language Specification, 12.27: <blockquote>A unary expression <i>u</i> of the form |
| * <i>op e</i> is equivalent to a method invocation <i>expression e.op()</i>. An expression of the |
| * form <i>op super</i> is equivalent to the method invocation <i>super.op()<i>.</blockquote> |
| */ |
| Object visitPrefixExpression(PrefixExpression node) { |
| TokenType operator13 = node.operator.type; |
| if (identical(operator13, TokenType.BANG)) { |
| return recordType(node, _typeProvider.boolType); |
| } |
| return recordReturnType(node, node.element); |
| } |
| /** |
| * The Dart Language Specification, 12.13: <blockquote> Property extraction allows for a member of |
| * an object to be concisely extracted from the object. If <i>o</i> is an object, and if <i>m</i> |
| * is the name of a method member of <i>o</i>, then |
| * <ul> |
| * <li><i>o.m</i> is defined to be equivalent to: <i>(r<sub>1</sub>, …, r<sub>n</sub>, |
| * {p<sub>1</sub> : d<sub>1</sub>, …, p<sub>k</sub> : d<sub>k</sub>}){return |
| * o.m(r<sub>1</sub>, …, r<sub>n</sub>, p<sub>1</sub>: p<sub>1</sub>, …, |
| * p<sub>k</sub>: p<sub>k</sub>);}</i> if <i>m</i> has required parameters <i>r<sub>1</sub>, |
| * …, r<sub>n</sub></i>, and named parameters <i>p<sub>1</sub> … p<sub>k</sub></i> |
| * with defaults <i>d<sub>1</sub>, …, d<sub>k</sub></i>.</li> |
| * <li><i>(r<sub>1</sub>, …, r<sub>n</sub>, [p<sub>1</sub> = d<sub>1</sub>, …, |
| * p<sub>k</sub> = d<sub>k</sub>]){return o.m(r<sub>1</sub>, …, r<sub>n</sub>, |
| * p<sub>1</sub>, …, p<sub>k</sub>);}</i> if <i>m</i> has required parameters |
| * <i>r<sub>1</sub>, …, r<sub>n</sub></i>, and optional positional parameters |
| * <i>p<sub>1</sub> … p<sub>k</sub></i> with defaults <i>d<sub>1</sub>, …, |
| * d<sub>k</sub></i>.</li> |
| * </ul> |
| * Otherwise, if <i>m</i> is the name of a getter member of <i>o</i> (declared implicitly or |
| * explicitly) then <i>o.m</i> evaluates to the result of invoking the getter. </blockquote> |
| * <p> |
| * The Dart Language Specification, 12.17: <blockquote> ... a getter invocation <i>i</i> of the |
| * form <i>e.m</i> ... |
| * <p> |
| * Let <i>T</i> be the static type of <i>e</i>. It is a static type warning if <i>T</i> does not |
| * have a getter named <i>m</i>. |
| * <p> |
| * The static type of <i>i</i> is the declared return type of <i>T.m</i>, if <i>T.m</i> exists; |
| * otherwise the static type of <i>i</i> is dynamic. |
| * <p> |
| * ... a getter invocation <i>i</i> of the form <i>C.m</i> ... |
| * <p> |
| * It is a static warning if there is no class <i>C</i> in the enclosing lexical scope of |
| * <i>i</i>, or if <i>C</i> does not declare, implicitly or explicitly, a getter named <i>m</i>. |
| * <p> |
| * The static type of <i>i</i> is the declared return type of <i>C.m</i> if it exists or dynamic |
| * otherwise. |
| * <p> |
| * ... a top-level getter invocation <i>i</i> of the form <i>m</i>, where <i>m</i> is an |
| * identifier ... |
| * <p> |
| * The static type of <i>i</i> is the declared return type of <i>m</i>.</blockquote> |
| */ |
| Object visitPropertyAccess(PropertyAccess node) { |
| SimpleIdentifier propertyName2 = node.propertyName; |
| Element element21 = propertyName2.element; |
| if (element21 is MethodElement) { |
| FunctionType type11 = ((element21 as MethodElement)).type; |
| recordType(propertyName2, type11); |
| return recordType(node, type11); |
| } else if (element21 is PropertyAccessorElement) { |
| PropertyAccessorElement accessor = (element21 as PropertyAccessorElement); |
| if (accessor.isGetter()) { |
| if (accessor.type == null) { |
| recordType(propertyName2, _typeProvider.dynamicType); |
| return recordType(node, _typeProvider.dynamicType); |
| } |
| Type2 returnType4 = accessor.type.returnType; |
| recordType(propertyName2, returnType4); |
| return recordType(node, returnType4); |
| } else { |
| recordType(propertyName2, VoidTypeImpl.instance); |
| return recordType(node, VoidTypeImpl.instance); |
| } |
| } else { |
| } |
| recordType(propertyName2, _typeProvider.dynamicType); |
| return recordType(node, _typeProvider.dynamicType); |
| } |
| /** |
| * The Dart Language Specification, 12.30: <blockquote>Evaluation of an identifier expression |
| * <i>e</i> of the form <i>id</i> proceeds as follows: |
| * <p> |
| * Let <i>d</i> be the innermost declaration in the enclosing lexical scope whose name is |
| * <i>id</i>. If no such declaration exists in the lexical scope, let <i>d</i> be the declaration |
| * of the inherited member named <i>id</i> if it exists. |
| * <ul> |
| * <li>If <i>d</i> is a class or type alias <i>T</i>, the value of <i>e</i> is the unique instance |
| * of class {@code Type} reifying <i>T</i>. |
| * <li>If <i>d</i> is a type parameter <i>T</i>, then the value of <i>e</i> is the value of the |
| * actual type argument corresponding to <i>T</i> that was passed to the generative constructor |
| * that created the current binding of this. We are assured that this is well defined, because if |
| * we were in a static member the reference to <i>T</i> would be a compile-time error. |
| * <li>If <i>d</i> is a library variable then: |
| * <ul> |
| * <li>If <i>d</i> is of one of the forms <i>var v = e<sub>i</sub>;</i>, <i>T v = |
| * e<sub>i</sub>;</i>, <i>final v = e<sub>i</sub>;</i>, <i>final T v = e<sub>i</sub>;</i>, and no |
| * value has yet been stored into <i>v</i> then the initializer expression <i>e<sub>i</sub></i> is |
| * evaluated. If, during the evaluation of <i>e<sub>i</sub></i>, the getter for <i>v</i> is |
| * referenced, a CyclicInitializationError is thrown. If the evaluation succeeded yielding an |
| * object <i>o</i>, let <i>r = o</i>, otherwise let <i>r = null</i>. In any case, <i>r</i> is |
| * stored into <i>v</i>. The value of <i>e</i> is <i>r</i>. |
| * <li>If <i>d</i> is of one of the forms <i>const v = e;</i> or <i>const T v = e;</i> the result |
| * of the getter is the value of the compile time constant <i>e</i>. Otherwise |
| * <li><i>e</i> evaluates to the current binding of <i>id</i>. |
| * </ul> |
| * <li>If <i>d</i> is a local variable or formal parameter then <i>e</i> evaluates to the current |
| * binding of <i>id</i>. |
| * <li>If <i>d</i> is a static method, top level function or local function then <i>e</i> |
| * evaluates to the function defined by <i>d</i>. |
| * <li>If <i>d</i> is the declaration of a static variable or static getter declared in class |
| * <i>C</i>, then <i>e</i> is equivalent to the getter invocation <i>C.id</i>. |
| * <li>If <i>d</i> is the declaration of a top level getter, then <i>e</i> is equivalent to the |
| * getter invocation <i>id</i>. |
| * <li>Otherwise, if <i>e</i> occurs inside a top level or static function (be it function, |
| * method, getter, or setter) or variable initializer, evaluation of e causes a NoSuchMethodError |
| * to be thrown. |
| * <li>Otherwise <i>e</i> is equivalent to the property extraction <i>this.id</i>. |
| * </ul> |
| * </blockquote> |
| */ |
| Object visitSimpleIdentifier(SimpleIdentifier node) { |
| Element element22 = node.element; |
| if (element22 == null) { |
| return recordType(node, _typeProvider.dynamicType); |
| } else if (element22 is ClassElement) { |
| if (isTypeName(node)) { |
| return recordType(node, ((element22 as ClassElement)).type); |
| } |
| return recordType(node, _typeProvider.typeType); |
| } else if (element22 is TypeVariableElement) { |
| return recordType(node, ((element22 as TypeVariableElement)).type); |
| } else if (element22 is TypeAliasElement) { |
| return recordType(node, ((element22 as TypeAliasElement)).type); |
| } else if (element22 is VariableElement) { |
| return recordType(node, ((element22 as VariableElement)).type); |
| } else if (element22 is MethodElement) { |
| return recordType(node, ((element22 as MethodElement)).type); |
| } else if (element22 is PropertyAccessorElement) { |
| PropertyAccessorElement accessor = (element22 as PropertyAccessorElement); |
| if (accessor.isGetter()) { |
| return recordType(node, accessor.type.returnType); |
| } else { |
| return recordType(node, accessor.type.normalParameterTypes[0]); |
| } |
| } else if (element22 is ExecutableElement) { |
| return recordType(node, ((element22 as ExecutableElement)).type); |
| } else if (element22 is PrefixElement) { |
| return null; |
| } else { |
| return recordType(node, _typeProvider.dynamicType); |
| } |
| } |
| /** |
| * The Dart Language Specification, 12.5: <blockquote>The static type of a string literal is{@code String}.</blockquote> |
| */ |
| Object visitSimpleStringLiteral(SimpleStringLiteral node) => recordType(node, _typeProvider.stringType); |
| /** |
| * The Dart Language Specification, 12.5: <blockquote>The static type of a string literal is{@code String}.</blockquote> |
| */ |
| Object visitStringInterpolation(StringInterpolation node) => recordType(node, _typeProvider.stringType); |
| Object visitSuperExpression(SuperExpression node) => recordType(node, _thisType == null ? _typeProvider.dynamicType : _thisType.superclass); |
| /** |
| * The Dart Language Specification, 12.10: <blockquote>The static type of {@code this} is the |
| * interface of the immediately enclosing class.</blockquote> |
| */ |
| Object visitThisExpression(ThisExpression node) => recordType(node, _thisType); |
| /** |
| * The Dart Language Specification, 12.8: <blockquote>The static type of a throw expression is |
| * bottom.</blockquote> |
| */ |
| Object visitThrowExpression(ThrowExpression node) => recordType(node, _typeProvider.bottomType); |
| /** |
| * Given a function expression, compute the return type of the function. The return type of |
| * functions with a block body is {@code dynamicType}, with an expression body it is the type of |
| * the expression. |
| * @param node the function expression whose return type is to be computed |
| * @return the return type that was computed |
| */ |
| Type2 computeReturnType(FunctionExpression node) { |
| FunctionBody body4 = node.body; |
| if (body4 is ExpressionFunctionBody) { |
| return getType(((body4 as ExpressionFunctionBody)).expression); |
| } |
| return _typeProvider.dynamicType; |
| } |
| /** |
| * Return the type of the given expression that is to be used for type analysis. |
| * @param expression the expression whose type is to be returned |
| * @return the type of the given expression |
| */ |
| Type2 getType(Expression expression) { |
| Type2 type = expression.staticType; |
| if (type == null) { |
| return _typeProvider.dynamicType; |
| } |
| return type; |
| } |
| /** |
| * Return the type represented by the given type name. |
| * @param typeName the type name representing the type to be returned |
| * @return the type represented by the type name |
| */ |
| Type2 getType2(TypeName typeName) { |
| Type2 type12 = typeName.type; |
| if (type12 == null) { |
| return _typeProvider.dynamicType; |
| } |
| return type12; |
| } |
| /** |
| * Return {@code true} if the given node is being used as the name of a type. |
| * @param node the node being tested |
| * @return {@code true} if the given node is being used as the name of a type |
| */ |
| bool isTypeName(SimpleIdentifier node) { |
| ASTNode parent8 = node.parent; |
| return parent8 is TypeName || (parent8 is PrefixedIdentifier && parent8.parent is TypeName) || (parent8 is MethodInvocation && identical(node, ((parent8 as MethodInvocation)).target)); |
| } |
| /** |
| * Record that the static type of the given node is the return type of the method or function |
| * represented by the given element. |
| * @param expression the node whose type is to be recorded |
| * @param element the element representing the method or function invoked by the given node |
| */ |
| Object recordReturnType(Expression expression, Element element) { |
| if (element is ExecutableElement) { |
| FunctionType type13 = ((element as ExecutableElement)).type; |
| if (type13 != null) { |
| return recordType(expression, type13.returnType); |
| } |
| } else if (element is VariableElement) { |
| Type2 variableType = ((element as VariableElement)).type; |
| if (variableType is FunctionType) { |
| return recordType(expression, ((variableType as FunctionType)).returnType); |
| } |
| } |
| return recordType(expression, _typeProvider.dynamicType); |
| } |
| /** |
| * Record that the static type of the given node is the given type. |
| * @param expression the node whose type is to be recorded |
| * @param type the static type of the node |
| */ |
| Object recordType(Expression expression, Type2 type) { |
| if (type == null) { |
| expression.staticType = _typeProvider.dynamicType; |
| } else { |
| expression.staticType = type; |
| } |
| return null; |
| } |
| /** |
| * Set the return type and parameter type information for the given function type based on the |
| * given return type and parameter elements. |
| * @param functionType the function type to be filled in |
| * @param returnType the return type of the function, or {@code null} if no type was declared |
| * @param parameters the elements representing the parameters to the function |
| */ |
| void setTypeInformation(FunctionTypeImpl functionType, Type2 returnType7, FormalParameterList parameterList) { |
| List<Type2> normalParameterTypes = new List<Type2>(); |
| List<Type2> optionalParameterTypes = new List<Type2>(); |
| LinkedHashMap<String, Type2> namedParameterTypes = new LinkedHashMap<String, Type2>(); |
| if (parameterList != null) { |
| for (ParameterElement parameter in parameterList.elements) { |
| if (parameter.parameterKind == ParameterKind.REQUIRED) { |
| normalParameterTypes.add(parameter.type); |
| } else if (parameter.parameterKind == ParameterKind.POSITIONAL) { |
| optionalParameterTypes.add(parameter.type); |
| } else if (parameter.parameterKind == ParameterKind.NAMED) { |
| namedParameterTypes[parameter.name] = parameter.type; |
| } |
| } |
| } |
| functionType.normalParameterTypes = new List.from(normalParameterTypes); |
| functionType.optionalParameterTypes = new List.from(optionalParameterTypes); |
| functionType.namedParameterTypes = namedParameterTypes; |
| functionType.returnType = returnType7; |
| } |
| } |
| /** |
| * The interface {@code TypeProvider} defines the behavior of objects that provide access to types |
| * defined by the language. |
| */ |
| abstract class TypeProvider { |
| /** |
| * Return the type representing the built-in type 'bool'. |
| * @return the type representing the built-in type 'bool' |
| */ |
| InterfaceType get boolType; |
| /** |
| * Return the type representing the type 'bottom'. |
| * @return the type representing the type 'bottom' |
| */ |
| Type2 get bottomType; |
| /** |
| * Return the type representing the built-in type 'double'. |
| * @return the type representing the built-in type 'double' |
| */ |
| InterfaceType get doubleType; |
| /** |
| * Return the type representing the built-in type 'dynamic'. |
| * @return the type representing the built-in type 'dynamic' |
| */ |
| Type2 get dynamicType; |
| /** |
| * Return the type representing the built-in type 'Function'. |
| * @return the type representing the built-in type 'Function' |
| */ |
| InterfaceType get functionType; |
| /** |
| * Return the type representing the built-in type 'int'. |
| * @return the type representing the built-in type 'int' |
| */ |
| InterfaceType get intType; |
| /** |
| * Return the type representing the built-in type 'List'. |
| * @return the type representing the built-in type 'List' |
| */ |
| InterfaceType get listType; |
| /** |
| * Return the type representing the built-in type 'Map'. |
| * @return the type representing the built-in type 'Map' |
| */ |
| InterfaceType get mapType; |
| /** |
| * Return the type representing the built-in type 'Object'. |
| * @return the type representing the built-in type 'Object' |
| */ |
| InterfaceType get objectType; |
| /** |
| * Return the type representing the built-in type 'StackTrace'. |
| * @return the type representing the built-in type 'StackTrace' |
| */ |
| InterfaceType get stackTraceType; |
| /** |
| * Return the type representing the built-in type 'String'. |
| * @return the type representing the built-in type 'String' |
| */ |
| InterfaceType get stringType; |
| /** |
| * Return the type representing the built-in type 'Type'. |
| * @return the type representing the built-in type 'Type' |
| */ |
| InterfaceType get typeType; |
| } |
| /** |
| * Instances of the class {@code TypeProviderImpl} provide access to types defined by the language |
| * by looking for those types in the element model for the core library. |
| */ |
| class TypeProviderImpl implements TypeProvider { |
| /** |
| * The type representing the built-in type 'bool'. |
| */ |
| InterfaceType _boolType; |
| /** |
| * The type representing the type 'bottom'. |
| */ |
| Type2 _bottomType; |
| /** |
| * The type representing the built-in type 'double'. |
| */ |
| InterfaceType _doubleType; |
| /** |
| * The type representing the built-in type 'dynamic'. |
| */ |
| Type2 _dynamicType; |
| /** |
| * The type representing the built-in type 'Function'. |
| */ |
| InterfaceType _functionType; |
| /** |
| * The type representing the built-in type 'int'. |
| */ |
| InterfaceType _intType; |
| /** |
| * The type representing the built-in type 'List'. |
| */ |
| InterfaceType _listType; |
| /** |
| * The type representing the built-in type 'Map'. |
| */ |
| InterfaceType _mapType; |
| /** |
| * The type representing the built-in type 'Object'. |
| */ |
| InterfaceType _objectType; |
| /** |
| * The type representing the built-in type 'StackTrace'. |
| */ |
| InterfaceType _stackTraceType; |
| /** |
| * The type representing the built-in type 'String'. |
| */ |
| InterfaceType _stringType; |
| /** |
| * The type representing the built-in type 'Type'. |
| */ |
| InterfaceType _typeType; |
| /** |
| * Initialize a newly created type provider to provide the types defined in the given library. |
| * @param coreLibrary the element representing the core library (dart:core). |
| */ |
| TypeProviderImpl(LibraryElement coreLibrary) { |
| initializeFrom(coreLibrary); |
| } |
| InterfaceType get boolType => _boolType; |
| Type2 get bottomType => _bottomType; |
| InterfaceType get doubleType => _doubleType; |
| Type2 get dynamicType => _dynamicType; |
| InterfaceType get functionType => _functionType; |
| InterfaceType get intType => _intType; |
| InterfaceType get listType => _listType; |
| InterfaceType get mapType => _mapType; |
| InterfaceType get objectType => _objectType; |
| InterfaceType get stackTraceType => _stackTraceType; |
| InterfaceType get stringType => _stringType; |
| InterfaceType get typeType => _typeType; |
| /** |
| * Return the type with the given name from the given namespace, or {@code null} if there is no |
| * class with the given name. |
| * @param namespace the namespace in which to search for the given name |
| * @param typeName the name of the type being searched for |
| * @return the type that was found |
| */ |
| InterfaceType getType(Namespace namespace, String typeName) { |
| Element element = namespace.get(typeName); |
| if (element == null) { |
| AnalysisEngine.instance.logger.logInformation("No definition of type ${typeName}"); |
| return null; |
| } |
| return ((element as ClassElement)).type; |
| } |
| /** |
| * Initialize the types provided by this type provider from the given library. |
| * @param library the library containing the definitions of the core types |
| */ |
| void initializeFrom(LibraryElement library) { |
| Namespace namespace = new NamespaceBuilder().createPublicNamespace(library); |
| _boolType = getType(namespace, "bool"); |
| _bottomType = BottomTypeImpl.instance; |
| _doubleType = getType(namespace, "double"); |
| _dynamicType = DynamicTypeImpl.instance; |
| _functionType = getType(namespace, "Function"); |
| _intType = getType(namespace, "int"); |
| _listType = getType(namespace, "List"); |
| _mapType = getType(namespace, "Map"); |
| _objectType = getType(namespace, "Object"); |
| _stackTraceType = getType(namespace, "StackTrace"); |
| _stringType = getType(namespace, "String"); |
| _typeType = getType(namespace, "Type"); |
| } |
| } |
| /** |
| * Instances of the class {@code TypeResolverVisitor} are used to resolve the types associated with |
| * the elements in the element model. This includes the types of superclasses, mixins, interfaces, |
| * fields, methods, parameters, and local variables. As a side-effect, this also finishes building |
| * the type hierarchy. |
| */ |
| class TypeResolverVisitor extends ScopedVisitor { |
| /** |
| * Initialize a newly created visitor to resolve the nodes in a compilation unit. |
| * @param library the library containing the compilation unit being resolved |
| * @param source the source representing the compilation unit being visited |
| * @param typeProvider the object used to access the types from the core library |
| */ |
| TypeResolverVisitor(Library library, Source source, TypeProvider typeProvider) : super(library, source, typeProvider) { |
| } |
| Object visitCatchClause(CatchClause node) { |
| super.visitCatchClause(node); |
| SimpleIdentifier exception = node.exceptionParameter; |
| if (exception != null) { |
| TypeName exceptionTypeName = node.exceptionType; |
| Type2 exceptionType; |
| if (exceptionTypeName == null) { |
| exceptionType = typeProvider.objectType; |
| } else { |
| exceptionType = getType(exceptionTypeName); |
| } |
| recordType(exception, exceptionType); |
| Element element23 = exception.element; |
| if (element23 is VariableElementImpl) { |
| ((element23 as VariableElementImpl)).type = exceptionType; |
| } else { |
| } |
| } |
| SimpleIdentifier stackTrace = node.stackTraceParameter; |
| if (stackTrace != null) { |
| recordType(stackTrace, typeProvider.stackTraceType); |
| } |
| return null; |
| } |
| Object visitClassDeclaration(ClassDeclaration node) { |
| super.visitClassDeclaration(node); |
| ClassElementImpl classElement = getClassElement(node.name); |
| InterfaceType superclassType = null; |
| ExtendsClause extendsClause4 = node.extendsClause; |
| if (extendsClause4 != null) { |
| superclassType = resolveType(extendsClause4.superclass, null, null, null); |
| } |
| if (classElement != null) { |
| if (superclassType == null) { |
| InterfaceType objectType2 = typeProvider.objectType; |
| if (classElement.type != objectType2) { |
| superclassType = objectType2; |
| } |
| } |
| classElement.supertype = superclassType; |
| } |
| resolve(classElement, node.withClause, node.implementsClause); |
| return null; |
| } |
| Object visitClassTypeAlias(ClassTypeAlias node) { |
| super.visitClassTypeAlias(node); |
| ClassElementImpl classElement = getClassElement(node.name); |
| InterfaceType superclassType = resolveType(node.superclass, null, null, null); |
| if (superclassType == null) { |
| superclassType = typeProvider.objectType; |
| } |
| if (classElement != null && superclassType != null) { |
| classElement.supertype = superclassType; |
| } |
| resolve(classElement, node.withClause, node.implementsClause); |
| return null; |
| } |
| Object visitConstructorDeclaration(ConstructorDeclaration node) { |
| super.visitConstructorDeclaration(node); |
| ExecutableElementImpl element24 = (node.element as ExecutableElementImpl); |
| FunctionTypeImpl type = new FunctionTypeImpl.con1(element24); |
| setTypeInformation(type, null, element24.parameters); |
| type.returnType = ((element24.enclosingElement as ClassElement)).type; |
| element24.type = type; |
| return null; |
| } |
| Object visitDefaultFormalParameter(DefaultFormalParameter node) { |
| super.visitDefaultFormalParameter(node); |
| return null; |
| } |
| Object visitFieldFormalParameter(FieldFormalParameter node) { |
| super.visitFieldFormalParameter(node); |
| Element element25 = node.identifier.element; |
| if (element25 is ParameterElementImpl) { |
| ParameterElementImpl parameter = (element25 as ParameterElementImpl); |
| Type2 type; |
| TypeName typeName = node.type; |
| if (typeName == null) { |
| type = typeProvider.dynamicType; |
| } else { |
| type = getType(typeName); |
| } |
| parameter.type = type; |
| } else { |
| } |
| return null; |
| } |
| Object visitFunctionDeclaration(FunctionDeclaration node) { |
| super.visitFunctionDeclaration(node); |
| ExecutableElementImpl element26 = (node.element as ExecutableElementImpl); |
| FunctionTypeImpl type = new FunctionTypeImpl.con1(element26); |
| setTypeInformation(type, node.returnType, element26.parameters); |
| element26.type = type; |
| return null; |
| } |
| Object visitFunctionTypeAlias(FunctionTypeAlias node) { |
| super.visitFunctionTypeAlias(node); |
| TypeAliasElementImpl element27 = (node.element as TypeAliasElementImpl); |
| FunctionTypeImpl type14 = (element27.type as FunctionTypeImpl); |
| setTypeInformation(type14, node.returnType, element27.parameters); |
| return null; |
| } |
| Object visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) { |
| super.visitFunctionTypedFormalParameter(node); |
| ParameterElementImpl element28 = (node.identifier.element as ParameterElementImpl); |
| FunctionTypeImpl type = new FunctionTypeImpl.con1((null as ExecutableElement)); |
| setTypeInformation(type, node.returnType, getElements(node.parameters)); |
| element28.type = type; |
| return null; |
| } |
| Object visitMethodDeclaration(MethodDeclaration node) { |
| super.visitMethodDeclaration(node); |
| ExecutableElementImpl element29 = (node.element as ExecutableElementImpl); |
| FunctionTypeImpl type = new FunctionTypeImpl.con1(element29); |
| setTypeInformation(type, node.returnType, element29.parameters); |
| element29.type = type; |
| return null; |
| } |
| Object visitSimpleFormalParameter(SimpleFormalParameter node) { |
| super.visitSimpleFormalParameter(node); |
| Type2 declaredType; |
| TypeName typeName = node.type; |
| if (typeName == null) { |
| declaredType = typeProvider.dynamicType; |
| } else { |
| declaredType = getType(typeName); |
| } |
| Element element30 = node.identifier.element; |
| if (element30 is ParameterElement) { |
| ((element30 as ParameterElementImpl)).type = declaredType; |
| } else { |
| } |
| return null; |
| } |
| Object visitTypeName(TypeName node) { |
| super.visitTypeName(node); |
| Identifier typeName = node.name; |
| Element element = nameScope.lookup(typeName, definingLibrary); |
| Type2 type = null; |
| if (element == null) { |
| DynamicTypeImpl dynamicType = DynamicTypeImpl.instance; |
| VoidTypeImpl voidType = VoidTypeImpl.instance; |
| if (typeName.name == dynamicType.name) { |
| element = dynamicType.element; |
| type = dynamicType; |
| setElement(typeName, element); |
| } else if (typeName.name == voidType.name) { |
| type = voidType; |
| } else { |
| ASTNode parent9 = node.parent; |
| if (typeName is PrefixedIdentifier && parent9 is ConstructorName) { |
| ConstructorName name = (parent9 as ConstructorName); |
| if (name.name == null) { |
| SimpleIdentifier prefix7 = ((typeName as PrefixedIdentifier)).prefix; |
| element = nameScope.lookup(prefix7, definingLibrary); |
| if (element is PrefixElement) { |
| return null; |
| } else if (element != null) { |
| name.name = ((typeName as PrefixedIdentifier)).identifier; |
| node.name = prefix7; |
| typeName = prefix7; |
| } |
| } |
| } |
| } |
| } |
| if (element == null && type == null) { |
| return null; |
| } else if (element is ClassElement) { |
| setElement(typeName, element); |
| type = ((element as ClassElement)).type; |
| } else if (element is TypeAliasElement) { |
| setElement(typeName, element); |
| type = ((element as TypeAliasElement)).type; |
| } else if (element is TypeVariableElement) { |
| setElement(typeName, element); |
| type = ((element as TypeVariableElement)).type; |
| } else if (type == null) { |
| return null; |
| } |
| if (type == null) { |
| return null; |
| } |
| TypeArgumentList argumentList = node.typeArguments; |
| if (argumentList != null) { |
| NodeList<TypeName> arguments5 = argumentList.arguments; |
| int argumentCount = arguments5.length; |
| List<Type2> parameters = getTypeArguments(type); |
| int parameterCount = parameters.length; |
| if (argumentCount != parameterCount) { |
| } |
| List<Type2> typeArguments = new List<Type2>(argumentCount); |
| for (int i = 0; i < argumentCount; i++) { |
| Type2 argumentType = getType(arguments5[i]); |
| if (argumentType != null) { |
| typeArguments.add(argumentType); |
| } |
| } |
| if (type is InterfaceTypeImpl) { |
| InterfaceTypeImpl interfaceType = (type as InterfaceTypeImpl); |
| argumentCount = typeArguments.length; |
| if (interfaceType.typeArguments.length == argumentCount) { |
| type = interfaceType.substitute5(new List.from(typeArguments)); |
| } else { |
| } |
| } else if (type is FunctionTypeImpl) { |
| FunctionTypeImpl functionType = (type as FunctionTypeImpl); |
| argumentCount = typeArguments.length; |
| if (functionType.typeArguments.length == argumentCount) { |
| type = functionType.substitute4(new List.from(typeArguments)); |
| } else { |
| } |
| } else { |
| } |
| } else { |
| List<Type2> parameters = getTypeArguments(type); |
| int parameterCount = parameters.length; |
| if (parameterCount > 0) { |
| DynamicTypeImpl dynamicType = DynamicTypeImpl.instance; |
| List<Type2> arguments = new List<Type2>.fixedLength(parameterCount); |
| for (int i = 0; i < parameterCount; i++) { |
| arguments[i] = dynamicType; |
| } |
| type = type.substitute2(arguments, parameters); |
| } |
| } |
| typeName.staticType = type; |
| node.type = type; |
| return null; |
| } |
| Object visitVariableDeclaration(VariableDeclaration node) { |
| super.visitVariableDeclaration(node); |
| Type2 declaredType; |
| TypeName typeName = ((node.parent as VariableDeclarationList)).type; |
| if (typeName == null) { |
| declaredType = typeProvider.dynamicType; |
| } else { |
| declaredType = getType(typeName); |
| } |
| Element element31 = node.name.element; |
| if (element31 is VariableElement) { |
| ((element31 as VariableElementImpl)).type = declaredType; |
| if (element31 is FieldElement) { |
| FieldElement field = (element31 as FieldElement); |
| PropertyAccessorElementImpl getter3 = (field.getter as PropertyAccessorElementImpl); |
| FunctionTypeImpl getterType = new FunctionTypeImpl.con1(getter3); |
| getterType.returnType = declaredType; |
| getter3.type = getterType; |
| PropertyAccessorElementImpl setter3 = (field.setter as PropertyAccessorElementImpl); |
| if (setter3 != null) { |
| FunctionTypeImpl setterType = new FunctionTypeImpl.con1(setter3); |
| setterType.returnType = VoidTypeImpl.instance; |
| setterType.normalParameterTypes = <Type2> [declaredType]; |
| setter3.type = setterType; |
| } |
| } |
| } else { |
| } |
| return null; |
| } |
| /** |
| * Return the class element that represents the class whose name was provided. |
| * @param identifier the name from the declaration of a class |
| * @return the class element that represents the class |
| */ |
| ClassElementImpl getClassElement(SimpleIdentifier identifier) { |
| if (identifier == null) { |
| return null; |
| } |
| Element element32 = identifier.element; |
| if (element32 is! ClassElementImpl) { |
| return null; |
| } |
| return (element32 as ClassElementImpl); |
| } |
| /** |
| * Return an array containing all of the elements associated with the parameters in the given |
| * list. |
| * @param parameterList the list of parameters whose elements are to be returned |
| * @return the elements associated with the parameters |
| */ |
| List<ParameterElement> getElements(FormalParameterList parameterList) { |
| List<ParameterElement> elements = new List<ParameterElement>(); |
| for (FormalParameter parameter in parameterList.parameters) { |
| ParameterElement element33 = (parameter.identifier.element as ParameterElement); |
| if (element33 != null) { |
| elements.add(element33); |
| } |
| } |
| return new List.from(elements); |
| } |
| /** |
| * Return the type represented by the given type name. |
| * @param typeName the type name representing the type to be returned |
| * @return the type represented by the type name |
| */ |
| Type2 getType(TypeName typeName) => typeName.type; |
| /** |
| * Return the type arguments associated with the given type. |
| * @param type the type whole type arguments are to be returned |
| * @return the type arguments associated with the given type |
| */ |
| List<Type2> getTypeArguments(Type2 type) { |
| if (type is InterfaceType) { |
| return ((type as InterfaceType)).typeArguments; |
| } else if (type is FunctionType) { |
| return ((type as FunctionType)).typeArguments; |
| } |
| return TypeImpl.EMPTY_ARRAY; |
| } |
| /** |
| * Record that the static type of the given node is the given type. |
| * @param expression the node whose type is to be recorded |
| * @param type the static type of the node |
| */ |
| Object recordType(Expression expression, Type2 type) { |
| if (type == null) { |
| expression.staticType = typeProvider.dynamicType; |
| } else { |
| expression.staticType = type; |
| } |
| return null; |
| } |
| /** |
| * Resolve the types in the given with and implements clauses and associate those types with the |
| * given class element. |
| * @param classElement the class element with which the mixin and interface types are to be |
| * associated |
| * @param withClause the with clause to be resolved |
| * @param implementsClause the implements clause to be resolved |
| */ |
| void resolve(ClassElementImpl classElement, WithClause withClause, ImplementsClause implementsClause) { |
| if (withClause != null) { |
| List<InterfaceType> mixinTypes2 = resolveTypes(withClause.mixinTypes, null, null, null); |
| if (classElement != null) { |
| classElement.mixins = mixinTypes2; |
| } |
| } |
| if (implementsClause != null) { |
| List<InterfaceType> interfaceTypes = resolveTypes(implementsClause.interfaces, null, null, null); |
| if (classElement != null) { |
| classElement.interfaces = interfaceTypes; |
| } |
| } |
| } |
| /** |
| * Return the type specified by the given name. |
| * @param typeName the type name specifying the type to be returned |
| * @param undefinedError the error to produce if the type name is not defined |
| * @param nonTypeError the error to produce if the type name is defined to be something other than |
| * a type |
| * @param nonInterfaceType the error to produce if the type is not an interface type |
| * @return the type specified by the type name |
| */ |
| InterfaceType resolveType(TypeName typeName, ResolverErrorCode undefinedError, ResolverErrorCode nonTypeError, ResolverErrorCode nonInterfaceType) { |
| Identifier name15 = typeName.name; |
| Element element = nameScope.lookup(name15, definingLibrary); |
| if (element == null) { |
| reportError(undefinedError, name15, []); |
| } else if (element is ClassElement) { |
| Type2 classType = ((element as ClassElement)).type; |
| typeName.type = classType; |
| if (classType is InterfaceType) { |
| return (classType as InterfaceType); |
| } |
| reportError(nonInterfaceType, name15, []); |
| } else { |
| reportError(nonTypeError, name15, []); |
| } |
| return null; |
| } |
| /** |
| * Resolve the types in the given list of type names. |
| * @param typeNames the type names to be resolved |
| * @param undefinedError the error to produce if the type name is not defined |
| * @param nonTypeError the error to produce if the type name is defined to be something other than |
| * a type |
| * @param nonInterfaceType the error to produce if the type is not an interface type |
| * @return an array containing all of the types that were resolved. |
| */ |
| List<InterfaceType> resolveTypes(NodeList<TypeName> typeNames, ResolverErrorCode undefinedError, ResolverErrorCode nonTypeError, ResolverErrorCode nonInterfaceType) { |
| List<InterfaceType> types = new List<InterfaceType>(); |
| for (TypeName typeName in typeNames) { |
| InterfaceType type = resolveType(typeName, undefinedError, nonTypeError, nonInterfaceType); |
| if (type != null) { |
| types.add(type); |
| } |
| } |
| return new List.from(types); |
| } |
| void setElement(Identifier typeName, Element element41) { |
| if (element41 != null) { |
| typeName.element = element41; |
| if (typeName is PrefixedIdentifier) { |
| PrefixedIdentifier identifier = (typeName as PrefixedIdentifier); |
| identifier.identifier.element = element41; |
| SimpleIdentifier prefix8 = identifier.prefix; |
| Element prefixElement = nameScope.lookup(prefix8, definingLibrary); |
| if (prefixElement != null) { |
| prefix8.element = prefixElement; |
| } |
| } |
| } |
| } |
| /** |
| * Set the return type and parameter type information for the given function type based on the |
| * given return type and parameter elements. |
| * @param functionType the function type to be filled in |
| * @param returnType the return type of the function, or {@code null} if no type was declared |
| * @param parameters the elements representing the parameters to the function |
| */ |
| void setTypeInformation(FunctionTypeImpl functionType, TypeName returnType8, List<ParameterElement> parameters) { |
| List<Type2> normalParameterTypes = new List<Type2>(); |
| List<Type2> optionalParameterTypes = new List<Type2>(); |
| LinkedHashMap<String, Type2> namedParameterTypes = new LinkedHashMap<String, Type2>(); |
| for (ParameterElement parameter in parameters) { |
| if (parameter.parameterKind == ParameterKind.REQUIRED) { |
| normalParameterTypes.add(parameter.type); |
| } else if (parameter.parameterKind == ParameterKind.POSITIONAL) { |
| optionalParameterTypes.add(parameter.type); |
| } else if (parameter.parameterKind == ParameterKind.NAMED) { |
| namedParameterTypes[parameter.name] = parameter.type; |
| } |
| } |
| functionType.normalParameterTypes = new List.from(normalParameterTypes); |
| functionType.optionalParameterTypes = new List.from(optionalParameterTypes); |
| functionType.namedParameterTypes = namedParameterTypes; |
| if (returnType8 == null) { |
| functionType.returnType = typeProvider.dynamicType; |
| } else { |
| functionType.returnType = returnType8.type; |
| } |
| } |
| } |
| /** |
| * Instances of the class {@code ClassScope} implement the scope defined by a class. |
| */ |
| class ClassScope extends EnclosedScope { |
| /** |
| * Initialize a newly created scope enclosed within another scope. |
| * @param enclosingScope the scope in which this scope is lexically enclosed |
| * @param typeElement the element representing the type represented by this scope |
| */ |
| ClassScope(Scope enclosingScope, ClassElement typeElement) : super(new EnclosedScope(enclosingScope)) { |
| defineTypeParameters(typeElement); |
| defineMembers(typeElement); |
| } |
| /** |
| * Define the instance members defined by the class. |
| * @param typeElement the element representing the type represented by this scope |
| */ |
| void defineMembers(ClassElement typeElement) { |
| for (PropertyAccessorElement accessor in typeElement.accessors) { |
| define(accessor); |
| } |
| for (FieldElement field in typeElement.fields) { |
| define(field); |
| } |
| for (MethodElement method in typeElement.methods) { |
| define(method); |
| } |
| } |
| /** |
| * Define the type parameters for the class. |
| * @param typeElement the element representing the type represented by this scope |
| */ |
| void defineTypeParameters(ClassElement typeElement) { |
| Scope parameterScope = enclosingScope; |
| for (TypeVariableElement parameter in typeElement.typeVariables) { |
| parameterScope.define(parameter); |
| } |
| } |
| } |
| /** |
| * Instances of the class {@code EnclosedScope} implement a scope that is lexically enclosed in |
| * another scope. |
| */ |
| class EnclosedScope extends Scope { |
| /** |
| * The scope in which this scope is lexically enclosed. |
| */ |
| Scope _enclosingScope; |
| /** |
| * Initialize a newly created scope enclosed within another scope. |
| * @param enclosingScope the scope in which this scope is lexically enclosed |
| */ |
| EnclosedScope(Scope enclosingScope) { |
| this._enclosingScope = enclosingScope; |
| } |
| LibraryElement get definingLibrary => _enclosingScope.definingLibrary; |
| AnalysisErrorListener get errorListener => _enclosingScope.errorListener; |
| /** |
| * Return the scope in which this scope is lexically enclosed. |
| * @return the scope in which this scope is lexically enclosed |
| */ |
| Scope get enclosingScope => _enclosingScope; |
| Element lookup3(String name, LibraryElement referencingLibrary) { |
| Element element = localLookup(name, referencingLibrary); |
| if (element != null) { |
| return element; |
| } |
| return _enclosingScope.lookup3(name, referencingLibrary); |
| } |
| } |
| /** |
| * Instances of the class {@code FunctionScope} implement the scope defined by a function. |
| */ |
| class FunctionScope extends EnclosedScope { |
| /** |
| * Initialize a newly created scope enclosed within another scope. |
| * @param enclosingScope the scope in which this scope is lexically enclosed |
| * @param functionElement the element representing the type represented by this scope |
| */ |
| FunctionScope(Scope enclosingScope, ExecutableElement functionElement) : super(new EnclosedScope(enclosingScope)) { |
| defineParameters(functionElement); |
| } |
| /** |
| * Define the parameters for the given function in the scope that encloses this function. |
| * @param functionElement the element representing the function represented by this scope |
| */ |
| void defineParameters(ExecutableElement functionElement) { |
| Scope parameterScope = enclosingScope; |
| if (functionElement.enclosingElement is ExecutableElement) { |
| String name16 = functionElement.name; |
| if (name16 != null && !name16.isEmpty) { |
| parameterScope.define(functionElement); |
| } |
| } |
| for (ParameterElement parameter in functionElement.parameters) { |
| if (!parameter.isInitializingFormal()) { |
| parameterScope.define(parameter); |
| } |
| } |
| } |
| } |
| /** |
| * Instances of the class {@code FunctionTypeScope} implement the scope defined by a function type |
| * alias. |
| */ |
| class FunctionTypeScope extends EnclosedScope { |
| /** |
| * Initialize a newly created scope enclosed within another scope. |
| * @param enclosingScope the scope in which this scope is lexically enclosed |
| * @param typeElement the element representing the type alias represented by this scope |
| */ |
| FunctionTypeScope(Scope enclosingScope, TypeAliasElement typeElement) : super(new EnclosedScope(enclosingScope)) { |
| defineTypeParameters(typeElement); |
| } |
| /** |
| * Define the type parameters for the function type alias. |
| * @param typeElement the element representing the type represented by this scope |
| */ |
| void defineTypeParameters(TypeAliasElement typeElement) { |
| Scope parameterScope = enclosingScope; |
| for (TypeVariableElement parameter in typeElement.typeVariables) { |
| parameterScope.define(parameter); |
| } |
| } |
| } |
| /** |
| * Instances of the class {@code LabelScope} represent a scope in which a single label is defined. |
| */ |
| class LabelScope { |
| /** |
| * The label scope enclosing this label scope. |
| */ |
| LabelScope _outerScope; |
| /** |
| * The label defined in this scope. |
| */ |
| String _label; |
| /** |
| * The element to which the label resolves. |
| */ |
| LabelElement _element; |
| /** |
| * The marker used to look up a label element for an unlabeled {@code break} or {@code continue}. |
| */ |
| static String EMPTY_LABEL = ""; |
| /** |
| * The label element returned for scopes that can be the target of an unlabeled {@code break} or{@code continue}. |
| */ |
| static SimpleIdentifier _EMPTY_LABEL_IDENTIFIER = new SimpleIdentifier.full(new StringToken(TokenType.IDENTIFIER, "", 0)); |
| /** |
| * Initialize a newly created scope to represent the potential target of an unlabeled{@code break} or {@code continue}. |
| * @param outerScope the label scope enclosing the new label scope |
| * @param onSwitchStatement {@code true} if this label is associated with a {@code switch}statement |
| * @param onSwitchMember {@code true} if this label is associated with a {@code switch} member |
| */ |
| LabelScope.con1(LabelScope outerScope, bool onSwitchStatement, bool onSwitchMember) { |
| _jtd_constructor_198_impl(outerScope, onSwitchStatement, onSwitchMember); |
| } |
| _jtd_constructor_198_impl(LabelScope outerScope, bool onSwitchStatement, bool onSwitchMember) { |
| _jtd_constructor_199_impl(outerScope, EMPTY_LABEL, new LabelElementImpl(_EMPTY_LABEL_IDENTIFIER, onSwitchStatement, onSwitchMember)); |
| } |
| /** |
| * Initialize a newly created scope to represent the given label. |
| * @param outerScope the label scope enclosing the new label scope |
| * @param label the label defined in this scope |
| * @param element the element to which the label resolves |
| */ |
| LabelScope.con2(LabelScope outerScope2, String label3, LabelElement element18) { |
| _jtd_constructor_199_impl(outerScope2, label3, element18); |
| } |
| _jtd_constructor_199_impl(LabelScope outerScope2, String label3, LabelElement element18) { |
| this._outerScope = outerScope2; |
| this._label = label3; |
| this._element = element18; |
| } |
| /** |
| * Return the label element corresponding to the given label, or {@code null} if the given label |
| * is not defined in this scope. |
| * @param targetLabel the label being looked up |
| * @return the label element corresponding to the given label |
| */ |
| LabelElement lookup(SimpleIdentifier targetLabel) => lookup2(targetLabel.name); |
| /** |
| * Return the label element corresponding to the given label, or {@code null} if the given label |
| * is not defined in this scope. |
| * @param targetLabel the label being looked up |
| * @return the label element corresponding to the given label |
| */ |
| LabelElement lookup2(String targetLabel) { |
| if (_label == targetLabel) { |
| return _element; |
| } else if (_outerScope != null) { |
| return _outerScope.lookup2(targetLabel); |
| } else { |
| return null; |
| } |
| } |
| } |
| /** |
| * Instances of the class {@code LibraryImportScope} represent the scope containing all of the names |
| * available from imported libraries. |
| */ |
| class LibraryImportScope extends Scope { |
| /** |
| * The element representing the library in which this scope is enclosed. |
| */ |
| LibraryElement _definingLibrary; |
| /** |
| * The listener that is to be informed when an error is encountered. |
| */ |
| AnalysisErrorListener _errorListener; |
| /** |
| * A list of the namespaces representing the names that are available in this scope from imported |
| * libraries. |
| */ |
| List<Namespace> _importedNamespaces = new List<Namespace>(); |
| /** |
| * Initialize a newly created scope representing the names imported into the given library. |
| * @param definingLibrary the element representing the library that imports the names defined in |
| * this scope |
| * @param errorListener the listener that is to be informed when an error is encountered |
| */ |
| LibraryImportScope(LibraryElement definingLibrary, AnalysisErrorListener errorListener) { |
| this._definingLibrary = definingLibrary; |
| this._errorListener = errorListener; |
| createImportedNamespaces(definingLibrary); |
| } |
| void define(Element element) { |
| if (!Scope.isPrivateName(element.name)) { |
| super.define(element); |
| } |
| } |
| LibraryElement get definingLibrary => _definingLibrary; |
| AnalysisErrorListener get errorListener => _errorListener; |
| Element lookup3(String name, LibraryElement referencingLibrary) { |
| if (Scope.isPrivateName(name)) { |
| return null; |
| } |
| Element foundElement = localLookup(name, referencingLibrary); |
| if (foundElement != null) { |
| return foundElement; |
| } |
| for (Namespace nameSpace in _importedNamespaces) { |
| Element element = nameSpace.get(name); |
| if (element != null) { |
| if (foundElement == null) { |
| foundElement = element; |
| } else { |
| foundElement = new MultiplyDefinedElementImpl(_definingLibrary.context, foundElement, element); |
| } |
| } |
| } |
| if (foundElement != null) { |
| defineWithoutChecking(foundElement); |
| } |
| return foundElement; |
| } |
| /** |
| * Create all of the namespaces associated with the libraries imported into this library. The |
| * names are not added to this scope, but are stored for later reference. |
| * @param definingLibrary the element representing the library that imports the libraries for |
| * which namespaces will be created |
| */ |
| void createImportedNamespaces(LibraryElement definingLibrary) { |
| NamespaceBuilder builder = new NamespaceBuilder(); |
| for (ImportElement element in definingLibrary.imports) { |
| _importedNamespaces.add(builder.createImportNamespace(element)); |
| } |
| } |
| } |
| /** |
| * Instances of the class {@code LibraryScope} implement a scope containing all of the names defined |
| * in a given library. |
| */ |
| class LibraryScope extends EnclosedScope { |
| /** |
| * Initialize a newly created scope representing the names defined in the given library. |
| * @param definingLibrary the element representing the library represented by this scope |
| * @param errorListener the listener that is to be informed when an error is encountered |
| */ |
| LibraryScope(LibraryElement definingLibrary, AnalysisErrorListener errorListener) : super(new LibraryImportScope(definingLibrary, errorListener)) { |
| defineTopLevelNames(definingLibrary); |
| } |
| /** |
| * Add to this scope all of the public top-level names that are defined in the given compilation |
| * unit. |
| * @param compilationUnit the compilation unit defining the top-level names to be added to this |
| * scope |
| */ |
| void defineLocalNames(CompilationUnitElement compilationUnit) { |
| for (PropertyAccessorElement element in compilationUnit.accessors) { |
| define(element); |
| } |
| for (FunctionElement element in compilationUnit.functions) { |
| define(element); |
| } |
| for (TypeAliasElement element in compilationUnit.typeAliases) { |
| define(element); |
| } |
| for (ClassElement element in compilationUnit.types) { |
| define(element); |
| } |
| for (VariableElement element in compilationUnit.variables) { |
| define(element); |
| } |
| } |
| /** |
| * Add to this scope all of the names that are explicitly defined in the given library. |
| * @param definingLibrary the element representing the library that defines the names in this |
| * scope |
| */ |
| void defineTopLevelNames(LibraryElement definingLibrary) { |
| for (PrefixElement prefix in definingLibrary.prefixes) { |
| define(prefix); |
| } |
| defineLocalNames(definingLibrary.definingCompilationUnit); |
| for (CompilationUnitElement compilationUnit in definingLibrary.parts) { |
| defineLocalNames(compilationUnit); |
| } |
| } |
| } |
| /** |
| * Instances of the class {@code Namespace} implement a mapping of identifiers to the elements |
| * represented by those identifiers. Namespaces are the building blocks for scopes. |
| */ |
| class Namespace { |
| /** |
| * A table mapping names that are defined in this namespace to the element representing the thing |
| * declared with that name. |
| */ |
| Map<String, Element> _definedNames = new Map<String, Element>(); |
| /** |
| * Initialize a newly created namespace to have the given defined names. |
| * @param definedNames the mapping from names that are defined in this namespace to the |
| * corresponding elements |
| */ |
| Namespace(Map<String, Element> definedNames) { |
| this._definedNames = definedNames; |
| } |
| /** |
| * Return the element in this namespace that is available to the containing scope using the given |
| * name. |
| * @param name the name used to reference the |
| * @return the element represented by the given identifier |
| */ |
| Element get(String name) => _definedNames[name]; |
| /** |
| * Return a table containing the same mappings as those defined by this namespace. |
| * @return a table containing the same mappings as those defined by this namespace |
| */ |
| Map<String, Element> get definedNames => new Map<String, Element>(); |
| } |
| /** |
| * Instances of the class {@code NamespaceBuilder} are used to build a {@code Namespace}. Namespace |
| * builders are thread-safe and re-usable. |
| */ |
| class NamespaceBuilder { |
| /** |
| * Initialize a newly created namespace builder. |
| */ |
| NamespaceBuilder() : super() { |
| } |
| /** |
| * Create a namespace representing the export namespace of the given library. |
| * @param library the library whose export namespace is to be created |
| * @return the export namespace that was created |
| */ |
| Namespace createExportNamespace(LibraryElement library) => new Namespace(createExportMapping(library, new Set<LibraryElement>())); |
| /** |
| * Create a namespace representing the import namespace of the given library. |
| * @param library the library whose import namespace is to be created |
| * @return the import namespace that was created |
| */ |
| Namespace createImportNamespace(ImportElement element) { |
| Map<String, Element> definedNames = createExportMapping(element.importedLibrary, new Set<LibraryElement>()); |
| definedNames = apply(definedNames, element.combinators); |
| definedNames = apply2(definedNames, element.prefix); |
| return new Namespace(definedNames); |
| } |
| /** |
| * Create a namespace representing the public namespace of the given library. |
| * @param library the library whose public namespace is to be created |
| * @return the public namespace that was created |
| */ |
| Namespace createPublicNamespace(LibraryElement library) { |
| Map<String, Element> definedNames = new Map<String, Element>(); |
| addPublicNames(definedNames, library.definingCompilationUnit); |
| for (CompilationUnitElement compilationUnit in library.parts) { |
| addPublicNames(definedNames, compilationUnit); |
| } |
| return new Namespace(definedNames); |
| } |
| /** |
| * Add all of the names in the given namespace to the given mapping table. |
| * @param definedNames the mapping table to which the names in the given namespace are to be added |
| * @param namespace the namespace containing the names to be added to this namespace |
| */ |
| void addAll(Map<String, Element> definedNames, Map<String, Element> newNames) { |
| for (MapEntry<String, Element> entry in getMapEntrySet(newNames)) { |
| definedNames[entry.getKey()] = entry.getValue(); |
| } |
| } |
| /** |
| * Add all of the names in the given namespace to the given mapping table. |
| * @param definedNames the mapping table to which the names in the given namespace are to be added |
| * @param namespace the namespace containing the names to be added to this namespace |
| */ |
| void addAll2(Map<String, Element> definedNames2, Namespace namespace) { |
| addAll(definedNames2, namespace.definedNames); |
| } |
| /** |
| * Add the given element to the given mapping table if it has a publicly visible name. |
| * @param definedNames the mapping table to which the public name is to be added |
| * @param element the element to be added |
| */ |
| void addIfPublic(Map<String, Element> definedNames, Element element) { |
| String name17 = element.name; |
| if (name17 != null && !Scope.isPrivateName(name17)) { |
| definedNames[name17] = element; |
| } |
| } |
| /** |
| * Add to the given mapping table all of the public top-level names that are defined in the given |
| * compilation unit. |
| * @param definedNames the mapping table to which the public names are to be added |
| * @param compilationUnit the compilation unit defining the top-level names to be added to this |
| * namespace |
| */ |
| void addPublicNames(Map<String, Element> definedNames, CompilationUnitElement compilationUnit) { |
| for (PropertyAccessorElement element in compilationUnit.accessors) { |
| addIfPublic(definedNames, element); |
| } |
| for (FunctionElement element in compilationUnit.functions) { |
| addIfPublic(definedNames, element); |
| } |
| for (TypeAliasElement element in compilationUnit.typeAliases) { |
| addIfPublic(definedNames, element); |
| } |
| for (ClassElement element in compilationUnit.types) { |
| addIfPublic(definedNames, element); |
| } |
| for (VariableElement element in compilationUnit.variables) { |
| addIfPublic(definedNames, element); |
| } |
| } |
| /** |
| * Apply the given combinators to all of the names in the given mapping table. |
| * @param definedNames the mapping table to which the namespace operations are to be applied |
| * @param combinators the combinators to be applied |
| */ |
| Map<String, Element> apply(Map<String, Element> definedNames, List<NamespaceCombinator> combinators) { |
| for (NamespaceCombinator combinator in combinators) { |
| if (combinator is __imp_combi.HideCombinator) { |
| hide(definedNames, ((combinator as __imp_combi.HideCombinator)).hiddenNames); |
| } else if (combinator is __imp_combi.ShowCombinator) { |
| definedNames = show(definedNames, ((combinator as __imp_combi.ShowCombinator)).shownNames); |
| } else { |
| AnalysisEngine.instance.logger.logError("Unknown type of combinator: ${combinator.runtimeType.toString()}"); |
| } |
| } |
| return definedNames; |
| } |
| /** |
| * Apply the given prefix to all of the names in the table of defined names. |
| * @param definedNames the names that were defined before this operation |
| * @param prefixElement the element defining the prefix to be added to the names |
| */ |
| Map<String, Element> apply2(Map<String, Element> definedNames, PrefixElement prefixElement) { |
| if (prefixElement != null) { |
| String prefix = prefixElement.name; |
| Map<String, Element> newNames = new Map<String, Element>(); |
| for (MapEntry<String, Element> entry in getMapEntrySet(definedNames)) { |
| newNames["${prefix}.${entry.getKey()}"] = entry.getValue(); |
| } |
| return newNames; |
| } else { |
| return definedNames; |
| } |
| } |
| /** |
| * Create a mapping table representing the export namespace of the given library. |
| * @param library the library whose public namespace is to be created |
| * @param visitedElements a set of libraries that do not need to be visited when processing the |
| * export directives of the given library because all of the names defined by them will |
| * be added by another library |
| * @return the mapping table that was created |
| */ |
| Map<String, Element> createExportMapping(LibraryElement library, Set<LibraryElement> visitedElements) { |
| javaSetAdd(visitedElements, library); |
| try { |
| Map<String, Element> definedNames = new Map<String, Element>(); |
| for (ExportElement element in library.exports) { |
| LibraryElement exportedLibrary3 = element.exportedLibrary; |
| if (!visitedElements.contains(exportedLibrary3)) { |
| Map<String, Element> exportedNames = createExportMapping(exportedLibrary3, visitedElements); |
| exportedNames = apply(exportedNames, element.combinators); |
| addAll(definedNames, exportedNames); |
| } |
| } |
| addAll2(definedNames, ((library.context as AnalysisContextImpl)).getPublicNamespace(library)); |
| return definedNames; |
| } finally { |
| visitedElements.remove(library); |
| } |
| } |
| /** |
| * Hide all of the given names by removing them from the given collection of defined names. |
| * @param definedNames the names that were defined before this operation |
| * @param hiddenNames the names to be hidden |
| */ |
| void hide(Map<String, Element> definedNames, List<String> hiddenNames) { |
| for (String name in hiddenNames) { |
| definedNames.remove(name); |
| } |
| } |
| /** |
| * Show only the given names by removing all other names from the given collection of defined |
| * names. |
| * @param definedNames the names that were defined before this operation |
| * @param shownNames the names to be shown |
| */ |
| Map<String, Element> show(Map<String, Element> definedNames, List<String> shownNames) { |
| Map<String, Element> newNames = new Map<String, Element>(); |
| for (String name in shownNames) { |
| Element element = definedNames[name]; |
| if (element != null) { |
| newNames[name] = element; |
| } |
| } |
| return newNames; |
| } |
| } |
| /** |
| * The abstract class {@code Scope} defines the behavior common to name scopes used by the resolver |
| * to determine which names are visible at any given point in the code. |
| */ |
| abstract class Scope { |
| /** |
| * The prefix used to mark an identifier as being private to its library. |
| */ |
| static String PRIVATE_NAME_PREFIX = "_"; |
| /** |
| * The suffix added to the declared name of a setter when looking up the setter. Used to |
| * disambiguate between a getter and a setter that have the same name. |
| */ |
| static String SETTER_SUFFIX = "="; |
| /** |
| * The name used to look up the method used to implement the unary minus operator. Used to |
| * disambiguate between the unary and binary operators. |
| */ |
| static String UNARY_MINUS = "unary-"; |
| /** |
| * Return {@code true} if the given name is a library-private name. |
| * @param name the name being tested |
| * @return {@code true} if the given name is a library-private name |
| */ |
| static bool isPrivateName(String name) => name != null && name.startsWith(PRIVATE_NAME_PREFIX); |
| /** |
| * A table mapping names that are defined in this scope to the element representing the thing |
| * declared with that name. |
| */ |
| Map<String, Element> _definedNames = new Map<String, Element>(); |
| /** |
| * Initialize a newly created scope to be empty. |
| */ |
| Scope() : super() { |
| } |
| /** |
| * Add the given element to this scope. If there is already an element with the given name defined |
| * in this scope, then an error will be generated and the original element will continue to be |
| * mapped to the name. If there is an element with the given name in an enclosing scope, then a |
| * warning will be generated but the given element will hide the inherited element. |
| * @param element the element to be added to this scope |
| */ |
| void define(Element element) { |
| String name = getName(element); |
| if (_definedNames.containsKey(name)) { |
| errorListener.onError(getErrorForDuplicate(_definedNames[name], element)); |
| } else { |
| Element overriddenElement = lookup3(name, definingLibrary); |
| if (overriddenElement != null) { |
| AnalysisError error = getErrorForHiding(overriddenElement, element); |
| if (error != null) { |
| errorListener.onError(error); |
| } |
| } |
| _definedNames[name] = element; |
| } |
| } |
| /** |
| * Return the element with which the given identifier is associated, or {@code null} if the name |
| * is not defined within this scope. |
| * @param identifier the identifier associated with the element to be returned |
| * @param referencingLibrary the library that contains the reference to the name, used to |
| * implement library-level privacy |
| * @return the element with which the given identifier is associated |
| */ |
| Element lookup(Identifier identifier, LibraryElement referencingLibrary) => lookup3(identifier.name, referencingLibrary); |
| /** |
| * Add the given element to this scope without checking for duplication or hiding. |
| * @param element the element to be added to this scope |
| */ |
| void defineWithoutChecking(Element element) { |
| _definedNames[getName(element)] = element; |
| } |
| /** |
| * Return the element representing the library in which this scope is enclosed. |
| * @return the element representing the library in which this scope is enclosed |
| */ |
| LibraryElement get definingLibrary; |
| /** |
| * Return the error code to be used when reporting that a name being defined locally conflicts |
| * with another element of the same name in the local scope. |
| * @param existing the first element to be declared with the conflicting name |
| * @param duplicate another element declared with the conflicting name |
| * @return the error code used to report duplicate names within a scope |
| */ |
| AnalysisError getErrorForDuplicate(Element existing, Element duplicate) => new AnalysisError.con1(source, ResolverErrorCode.DUPLICATE_MEMBER_ERROR, [existing.name]); |
| /** |
| * Return the error code to be used when reporting that a name being defined locally hides a name |
| * defined in an outer scope. |
| * @param hidden the element whose visibility is being hidden |
| * @param hiding the element that is hiding the visibility of another declaration |
| * @return the error code used to report name hiding |
| */ |
| AnalysisError getErrorForHiding(Element hidden, Element hiding) => new AnalysisError.con1(source, ResolverErrorCode.DUPLICATE_MEMBER_WARNING, [hidden.name]); |
| /** |
| * Return the listener that is to be informed when an error is encountered. |
| * @return the listener that is to be informed when an error is encountered |
| */ |
| AnalysisErrorListener get errorListener; |
| /** |
| * Return the source object representing the compilation unit with which errors related to this |
| * scope should be associated. |
| * @return the source object with which errors should be associated |
| */ |
| Source get source => definingLibrary.definingCompilationUnit.source; |
| /** |
| * Return the element with which the given name is associated, or {@code null} if the name is not |
| * defined within this scope. This method only returns elements that are directly defined within |
| * this scope, not elements that are defined in an enclosing scope. |
| * @param name the name associated with the element to be returned |
| * @param referencingLibrary the library that contains the reference to the name, used to |
| * implement library-level privacy |
| * @return the element with which the given name is associated |
| */ |
| Element localLookup(String name, LibraryElement referencingLibrary) => _definedNames[name]; |
| /** |
| * Return the element with which the given name is associated, or {@code null} if the name is not |
| * defined within this scope. |
| * @param name the name associated with the element to be returned |
| * @param referencingLibrary the library that contains the reference to the name, used to |
| * implement library-level privacy |
| * @return the element with which the given name is associated |
| */ |
| Element lookup3(String name, LibraryElement referencingLibrary); |
| /** |
| * Return the name that will be used to look up the given element. |
| * @param element the element whose look-up name is to be returned |
| * @return the name that will be used to look up the given element |
| */ |
| String getName(Element element) { |
| if (element is MethodElement) { |
| MethodElement method = (element as MethodElement); |
| if (method.name == "-" && method.parameters.length == 0) { |
| return UNARY_MINUS; |
| } |
| } else if (element is PropertyAccessorElement) { |
| PropertyAccessorElement accessor = (element as PropertyAccessorElement); |
| if (accessor.isSetter()) { |
| return "${accessor.name}${SETTER_SUFFIX}"; |
| } |
| } |
| return element.name; |
| } |
| } |
| /** |
| * The enumeration {@code ResolverErrorCode} defines the error codes used for errors detected by the |
| * resolver. The convention for this class is for the name of the error code to indicate the problem |
| * that caused the error to be generated and for the error message to explain what is wrong and, |
| * when appropriate, how the problem can be corrected. |
| */ |
| class ResolverErrorCode implements ErrorCode { |
| static final ResolverErrorCode BREAK_LABEL_ON_SWITCH_MEMBER = new ResolverErrorCode('BREAK_LABEL_ON_SWITCH_MEMBER', 0, ErrorType.COMPILE_TIME_ERROR, "Break label resolves to case or default statement"); |
| static final ResolverErrorCode CANNOT_BE_RESOLVED = new ResolverErrorCode('CANNOT_BE_RESOLVED', 1, ErrorType.STATIC_WARNING, "Cannot resolve the name '%s'"); |
| static final ResolverErrorCode CONTINUE_LABEL_ON_SWITCH = new ResolverErrorCode('CONTINUE_LABEL_ON_SWITCH', 2, ErrorType.COMPILE_TIME_ERROR, "A continue label resolves to switch, must be loop or switch member"); |
| /** |
| * It is a compile-time error if [the URI] is not a compile-time constant, or if [the URI] |
| * involves string interpolation. |
| */ |
| static final ResolverErrorCode INVALID_URI = new ResolverErrorCode('INVALID_URI', 3, ErrorType.COMPILE_TIME_ERROR, "URI's used in directives must be compile time constants without interpolation expressions"); |
| static final ResolverErrorCode LABEL_IN_OUTER_SCOPE = new ResolverErrorCode('LABEL_IN_OUTER_SCOPE', 4, ErrorType.COMPILE_TIME_ERROR, "Cannot reference label '%s' declared in an outer method or function"); |
| static final ResolverErrorCode MISSING_LIBRARY_DIRECTIVE_IMPORTED = new ResolverErrorCode('MISSING_LIBRARY_DIRECTIVE_IMPORTED', 5, ErrorType.COMPILE_TIME_ERROR, "Libraries that are imported by other libraries must have a library directive"); |
| static final ResolverErrorCode MISSING_LIBRARY_DIRECTIVE_WITH_PART = new ResolverErrorCode('MISSING_LIBRARY_DIRECTIVE_WITH_PART', 6, ErrorType.COMPILE_TIME_ERROR, "Libraries that have parts must have a library directive"); |
| static final ResolverErrorCode MISSING_PART_OF_DIRECTIVE = new ResolverErrorCode('MISSING_PART_OF_DIRECTIVE', 7, ErrorType.COMPILE_TIME_ERROR, "The included part must have a part-of directive"); |
| static final ResolverErrorCode NON_BOOLEAN_CONDITION = new ResolverErrorCode('NON_BOOLEAN_CONDITION', 8, ErrorType.STATIC_TYPE_WARNING, "Conditions must have a static type of 'bool'"); |
| static final ResolverErrorCode PART_WITH_WRONG_LIBRARY_NAME = new ResolverErrorCode('PART_WITH_WRONG_LIBRARY_NAME', 9, ErrorType.STATIC_WARNING, "The included part appears to be part of the library '%s'"); |
| static final ResolverErrorCode UNDEFINED_LABEL = new ResolverErrorCode('UNDEFINED_LABEL', 10, ErrorType.COMPILE_TIME_ERROR, "The label '%s' is not defined"); |
| static final ResolverErrorCode DUPLICATE_MEMBER_ERROR = new ResolverErrorCode('DUPLICATE_MEMBER_ERROR', 11, ErrorType.COMPILE_TIME_ERROR, "Duplicate member '%s'"); |
| static final ResolverErrorCode DUPLICATE_MEMBER_WARNING = new ResolverErrorCode('DUPLICATE_MEMBER_WARNING', 12, ErrorType.STATIC_WARNING, "Duplicate member '%s'"); |
| static final List<ResolverErrorCode> values = [BREAK_LABEL_ON_SWITCH_MEMBER, CANNOT_BE_RESOLVED, CONTINUE_LABEL_ON_SWITCH, INVALID_URI, LABEL_IN_OUTER_SCOPE, MISSING_LIBRARY_DIRECTIVE_IMPORTED, MISSING_LIBRARY_DIRECTIVE_WITH_PART, MISSING_PART_OF_DIRECTIVE, NON_BOOLEAN_CONDITION, PART_WITH_WRONG_LIBRARY_NAME, UNDEFINED_LABEL, DUPLICATE_MEMBER_ERROR, DUPLICATE_MEMBER_WARNING]; |
| final String __name; |
| final int __ordinal; |
| /** |
| * The type of this error. |
| */ |
| ErrorType _type; |
| /** |
| * The message template used to create the message to be displayed for this error. |
| */ |
| String _message; |
| /** |
| * Initialize a newly created error code to have the given type and message. |
| * @param type the type of this error |
| * @param message the message template used to create the message to be displayed for the error |
| */ |
| ResolverErrorCode(this.__name, this.__ordinal, ErrorType type, String message) { |
| this._type = type; |
| this._message = message; |
| } |
| ErrorSeverity get errorSeverity => _type.severity; |
| String get message => _message; |
| ErrorType get type => _type; |
| bool needsRecompilation() => true; |
| String toString() => __name; |
| } |