private static async Task ChangeTypeAsync( RefactoringContext context, VariableDeclarationSyntax variableDeclaration) { SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); TypeAnalysisFlags flags = CSharpAnalysis.AnalyzeType(variableDeclaration, semanticModel, context.CancellationToken); if (flags.IsExplicit()) { if (flags.SupportsImplicit() && flags.IsValidSymbol() && context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeExplicitTypeToVar)) { context.RegisterRefactoring( "Change type to 'var'", cancellationToken => { return(ChangeTypeRefactoring.ChangeTypeToVarAsync( context.Document, variableDeclaration.Type, cancellationToken)); }); } } else if (flags.SupportsExplicit() && flags.IsValidSymbol() && context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeVarToExplicitType)) { ITypeSymbol typeSymbol = semanticModel.GetTypeSymbol(variableDeclaration.Type, context.CancellationToken); ChangeType(context, variableDeclaration, typeSymbol, semanticModel, context.CancellationToken); } }
private void AnalyzeVariableDeclaration(SyntaxNodeAnalysisContext context) { var variableDeclaration = (VariableDeclarationSyntax)context.Node; TypeAnalysisFlags flags = CSharpAnalysis.AnalyzeType(variableDeclaration, context.SemanticModel, context.CancellationToken); if (flags.IsExplicit()) { if (flags.SupportsImplicit() && flags.IsTypeObvious()) { context.ReportDiagnostic( DiagnosticDescriptors.UseVarInsteadOfExplicitTypeWhenTypeIsObvious, variableDeclaration.Type); } } else if (flags.SupportsExplicit()) { if (flags.IsTypeObvious()) { context.ReportDiagnostic( DiagnosticDescriptors.UseExplicitTypeInsteadOfVarWhenTypeIsObvious, variableDeclaration.Type); } else if (flags.IsValidSymbol()) { context.ReportDiagnostic( DiagnosticDescriptors.UseExplicitTypeInsteadOfVarWhenTypeIsNotObvious, variableDeclaration.Type); } } }
private static bool IsFixable(TypeAnalysisFlags flags) { return(flags.IsExplicit() && flags.SupportsImplicit() && flags.IsValidSymbol() && !flags.IsTypeObvious()); }
private static void AnalyzeForEachStatement(SyntaxNodeAnalysisContext context) { var forEachStatement = (ForEachStatementSyntax)context.Node; TypeAnalysisFlags flags = CSharpAnalysis.AnalyzeType(forEachStatement, context.SemanticModel); if (flags.IsExplicit() && flags.SupportsImplicit()) { context.ReportDiagnostic(DiagnosticDescriptors.UseVarInsteadOfExplicitTypeInForEach, forEachStatement.Type); } }
public static async Task ComputeRefactoringsAsync( RefactoringContext context, DeclarationExpressionSyntax declarationExpression) { if (declarationExpression.Type?.Span.Contains(context.Span) == true && context.IsAnyRefactoringEnabled( RefactoringIdentifiers.ChangeExplicitTypeToVar, RefactoringIdentifiers.ChangeVarToExplicitType)) { SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); TypeAnalysisFlags flags = CSharpAnalysis.AnalyzeType(declarationExpression, semanticModel, context.CancellationToken); if (flags.IsExplicit()) { if (flags.SupportsImplicit() && flags.IsValidSymbol() && context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeExplicitTypeToVar)) { context.RegisterRefactoring( "Change type to 'var'", cancellationToken => { return(ChangeTypeRefactoring.ChangeTypeToVarAsync( context.Document, declarationExpression.Type, cancellationToken)); }); } } else if (flags.SupportsExplicit() && flags.IsValidSymbol() && context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeVarToExplicitType)) { TypeSyntax type = declarationExpression.Type; var localSymbol = semanticModel.GetDeclaredSymbol(declarationExpression.Designation, context.CancellationToken) as ILocalSymbol; ITypeSymbol typeSymbol = localSymbol.Type; context.RegisterRefactoring( $"Change type to '{SymbolDisplay.GetMinimalString(typeSymbol, semanticModel, type.Span.Start)}'", cancellationToken => ChangeTypeRefactoring.ChangeTypeAsync(context.Document, type, typeSymbol, cancellationToken)); } } }
internal static async Task ChangeTypeAsync( RefactoringContext context, ForEachStatementSyntax forEachStatement) { TypeSyntax type = forEachStatement.Type; if (type?.Span.Contains(context.Span) != true) { return; } SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); TypeAnalysisFlags flags = CSharpAnalysis.AnalyzeType(forEachStatement, semanticModel); if (flags.IsExplicit()) { if (flags.SupportsImplicit() && flags.IsValidSymbol() && context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeExplicitTypeToVar)) { context.RegisterRefactoring( "Change type to 'var'", cancellationToken => ChangeTypeRefactoring.ChangeTypeToVarAsync(context.Document, type, cancellationToken)); } } else if (flags.SupportsExplicit() && flags.IsValidSymbol() && context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeVarToExplicitType)) { ITypeSymbol typeSymbol = semanticModel.GetTypeSymbol(type, context.CancellationToken); context.RegisterRefactoring( $"Change type to '{SymbolDisplay.GetMinimalString(typeSymbol, semanticModel, type.Span.Start)}'", cancellationToken => ChangeTypeRefactoring.ChangeTypeAsync(context.Document, type, typeSymbol, cancellationToken)); } }
public bool Any(TypeAnalysisFlags flags) { return((Flags & flags) != 0); }
internal TypeAnalysis(ITypeSymbol symbol, TypeAnalysisFlags flags) { Symbol = symbol; Flags = flags; }
public bool All(TypeAnalysisFlags flags) { return((Flags & flags) != flags); }
internal TypeAnalysis(TypeAnalysisFlags flags) { Flags = flags; }
public static bool IsImplicit(this TypeAnalysisFlags flags) { return((flags & TypeAnalysisFlags.Implicit) != 0); }
public static bool IsTypeObvious(this TypeAnalysisFlags flags) { return((flags & TypeAnalysisFlags.TypeObvious) != 0); }
public static bool IsValidSymbol(this TypeAnalysisFlags flags) { return((flags & TypeAnalysisFlags.ValidSymbol) != 0); }
public static bool SupportsExplicit(this TypeAnalysisFlags flags) { return((flags & TypeAnalysisFlags.SupportsExplicit) != 0); }