private static DiagnosticResult GetExpectedDiagnostic(string language, int line, int column, SymbolKind unsupportedSymbolKind) { string fileName = language == LanguageNames.CSharp ? "Test0.cs" : "Test0.vb"; return(new DiagnosticResult(DiagnosticIds.UnsupportedSymbolKindArgumentRuleId, DiagnosticHelpers.DefaultDiagnosticSeverity) .WithLocation(fileName, line, column) .WithMessageFormat(CodeAnalysisDiagnosticsResources.UnsupportedSymbolKindArgumentToRegisterActionMessage) .WithArguments(unsupportedSymbolKind.ToString())); }
public static object GetErrorReportingName(SymbolKind kind) { switch (kind) { case SymbolKind.Namespace: return MessageID.IDS_SK_NAMESPACE.Localize(); default: // TODO: what is the right way to get these strings? return kind.ToString().ToLower(); } }
public static object GetErrorReportingName(SymbolKind kind) { switch (kind) { case SymbolKind.Namespace: return(MessageID.IDS_SK_NAMESPACE.Localize()); default: // TODO: what is the right way to get these strings? return(kind.ToString().ToLower()); } }
public override string ToString() { StringBuilder b = new StringBuilder("["); b.Append(SymbolKind.ToString()); b.Append(' '); if (DeclaringTypeDefinition != null) { b.Append(DeclaringTypeDefinition.Name); b.Append('.'); } b.Append(Name); b.Append('('); b.Append(string.Join(", ", this.Parameters)); b.Append("):"); b.Append(ReturnType.ToString()); b.Append(']'); return(b.ToString()); }
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context) { if (!Settings.IsCodeFixEnabled(CodeFixIdentifiers.AddArgumentList) && !Settings.IsCodeFixEnabled(CodeFixIdentifiers.ReorderModifiers) && !Settings.IsCodeFixEnabled(CodeFixIdentifiers.ReplaceNullLiteralExpressionWithDefaultValue) && !Settings.IsCodeFixEnabled(CodeFixIdentifiers.ReturnDefaultValue) && !Settings.IsCodeFixEnabled(CodeFixIdentifiers.AddMissingType) && !Settings.IsCodeFixEnabled(CodeFixIdentifiers.RemoveSemicolon) && !Settings.IsCodeFixEnabled(CodeFixIdentifiers.RemoveConditionalAccess) && !Settings.IsCodeFixEnabled(CodeFixIdentifiers.ChangeForEachType)) { return; } SyntaxNode root = await context.GetSyntaxRootAsync().ConfigureAwait(false); if (!TryFindToken(root, context.Span.Start, out SyntaxToken token)) { return; } SyntaxKind kind = token.Kind(); foreach (Diagnostic diagnostic in context.Diagnostics) { switch (diagnostic.Id) { case CompilerDiagnosticIdentifiers.OperatorCannotBeAppliedToOperandOfType: { if (kind == SyntaxKind.QuestionToken && token.Parent is ConditionalAccessExpressionSyntax conditionalAccess) { SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); ITypeSymbol typeSymbol = semanticModel.GetTypeSymbol(conditionalAccess.Expression, context.CancellationToken); if (typeSymbol?.IsErrorType() == false && !typeSymbol.IsConstructedFrom(SpecialType.System_Nullable_T)) { if (typeSymbol.IsValueType) { if (Settings.IsCodeFixEnabled(CodeFixIdentifiers.RemoveConditionalAccess)) { CodeAction codeAction = CodeAction.Create( "Remove '?' operator", cancellationToken => { var textChange = new TextChange(token.Span, ""); return(context.Document.WithTextChangeAsync(textChange, cancellationToken)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); } } else if (typeSymbol.IsReferenceType) { if (Settings.IsCodeFixEnabled(CodeFixIdentifiers.AddArgumentList) && conditionalAccess.WhenNotNull is MemberBindingExpressionSyntax memberBindingExpression) { ConditionalAccessExpressionSyntax newNode = conditionalAccess.WithWhenNotNull( InvocationExpression( memberBindingExpression.WithoutTrailingTrivia(), ArgumentList().WithTrailingTrivia(memberBindingExpression.GetTrailingTrivia()))); CodeAction codeAction = CodeAction.Create( "Add argument list", cancellationToken => context.Document.ReplaceNodeAsync(conditionalAccess, newNode, cancellationToken), GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); } } } if (Settings.IsCodeFixEnabled(CodeFixIdentifiers.AddArgumentList)) { break; } if (Settings.IsCodeFixEnabled(CodeFixIdentifiers.RemoveConditionalAccess)) { } } break; } case CompilerDiagnosticIdentifiers.PartialModifierCanOnlyAppearImmediatelyBeforeClassStructInterfaceOrVoid: { if (!Settings.IsCodeFixEnabled(CodeFixIdentifiers.ReorderModifiers)) { break; } ModifiersCodeFixRegistrator.MoveModifier(context, diagnostic, token.Parent, token); break; } case CompilerDiagnosticIdentifiers.ValueCannotBeUsedAsDefaultParameter: { if (!Settings.IsCodeFixEnabled(CodeFixIdentifiers.ReplaceNullLiteralExpressionWithDefaultValue)) { break; } if (!(token.Parent is ParameterSyntax parameter)) { break; } ExpressionSyntax value = parameter.Default?.Value; if (value == null) { break; } if (value.Kind() != SyntaxKind.NullLiteralExpression) { break; } SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); CodeFixRegistrator.ReplaceNullWithDefaultValue(context, diagnostic, value, semanticModel); break; } case CompilerDiagnosticIdentifiers.ObjectOfTypeConvertibleToTypeIsRequired: { if (!Settings.IsCodeFixEnabled(CodeFixIdentifiers.ReturnDefaultValue)) { break; } if (token.Kind() != SyntaxKind.ReturnKeyword) { break; } if (!token.IsParentKind(SyntaxKind.ReturnStatement)) { break; } SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); ISymbol symbol = semanticModel.GetEnclosingSymbol(token.SpanStart, context.CancellationToken); if (symbol == null) { break; } SymbolKind symbolKind = symbol.Kind; ITypeSymbol typeSymbol = null; if (symbolKind == SymbolKind.Method) { var methodSymbol = (IMethodSymbol)symbol; typeSymbol = methodSymbol.ReturnType; if (methodSymbol.IsAsync && (typeSymbol is INamedTypeSymbol namedTypeSymbol)) { ImmutableArray <ITypeSymbol> typeArguments = namedTypeSymbol.TypeArguments; if (typeArguments.Any()) { typeSymbol = typeArguments[0]; } } } else if (symbolKind == SymbolKind.Property) { typeSymbol = ((IPropertySymbol)symbol).Type; } else { Debug.Fail(symbolKind.ToString()); } if (typeSymbol == null) { break; } if (typeSymbol.Kind == SymbolKind.ErrorType) { break; } if (!typeSymbol.SupportsExplicitDeclaration()) { break; } var returnStatement = (ReturnStatementSyntax)token.Parent; CodeAction codeAction = CodeAction.Create( "Return default value", cancellationToken => { ExpressionSyntax expression = typeSymbol.ToDefaultValueSyntax(semanticModel, returnStatement.SpanStart); ReturnStatementSyntax newNode = returnStatement.WithExpression(expression); return(context.Document.ReplaceNodeAsync(returnStatement, newNode, cancellationToken)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); break; } case CompilerDiagnosticIdentifiers.TypeExpected: { if (!Settings.IsCodeFixEnabled(CodeFixIdentifiers.AddMissingType)) { break; } if (token.Kind() != SyntaxKind.CloseParenToken) { break; } if (!(token.Parent is DefaultExpressionSyntax defaultExpression)) { break; } if (!(defaultExpression.Type is IdentifierNameSyntax identifierName)) { break; } if (!identifierName.IsMissing) { break; } SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); TypeInfo typeInfo = semanticModel.GetTypeInfo(defaultExpression, context.CancellationToken); ITypeSymbol convertedType = typeInfo.ConvertedType; if (convertedType?.SupportsExplicitDeclaration() != true) { break; } CodeAction codeAction = CodeAction.Create( $"Add type '{SymbolDisplay.GetMinimalString(convertedType, semanticModel, defaultExpression.SpanStart)}'", cancellationToken => { TypeSyntax newNode = convertedType.ToMinimalTypeSyntax(semanticModel, defaultExpression.SpanStart); newNode = newNode .WithTriviaFrom(identifierName) .WithFormatterAnnotation(); return(context.Document.ReplaceNodeAsync(identifierName, newNode, cancellationToken)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); break; } case CompilerDiagnosticIdentifiers.SemicolonAfterMethodOrAccessorBlockIsNotValid: { if (!Settings.IsCodeFixEnabled(CodeFixIdentifiers.RemoveSemicolon)) { break; } if (token.Kind() != SyntaxKind.SemicolonToken) { break; } switch (token.Parent) { case MethodDeclarationSyntax methodDeclaration: { BlockSyntax body = methodDeclaration.Body; if (body == null) { break; } CodeAction codeAction = CodeAction.Create( "Remove semicolon", cancellationToken => { SyntaxTriviaList trivia = body .GetTrailingTrivia() .EmptyIfWhitespace() .AddRange(token.LeadingTrivia.EmptyIfWhitespace()) .AddRange(token.TrailingTrivia); MethodDeclarationSyntax newNode = methodDeclaration .WithBody(body.WithTrailingTrivia(trivia)) .WithSemicolonToken(default(SyntaxToken)); return(context.Document.ReplaceNodeAsync(methodDeclaration, newNode, cancellationToken)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); break; } case PropertyDeclarationSyntax propertyDeclaration: { AccessorListSyntax accessorList = propertyDeclaration.AccessorList; if (accessorList == null) { break; } CodeAction codeAction = CodeAction.Create( "Remove semicolon", cancellationToken => { SyntaxTriviaList trivia = accessorList .GetTrailingTrivia() .EmptyIfWhitespace() .AddRange(token.LeadingTrivia.EmptyIfWhitespace()) .AddRange(token.TrailingTrivia); PropertyDeclarationSyntax newNode = propertyDeclaration .WithAccessorList(accessorList.WithTrailingTrivia(trivia)) .WithSemicolonToken(default(SyntaxToken)); return(context.Document.ReplaceNodeAsync(propertyDeclaration, newNode, cancellationToken)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); break; } case AccessorDeclarationSyntax accessorDeclaration: { BlockSyntax body = accessorDeclaration.Body; if (body == null) { break; } CodeAction codeAction = CodeAction.Create( "Remove semicolon", cancellationToken => { SyntaxTriviaList trivia = body .GetTrailingTrivia() .EmptyIfWhitespace() .AddRange(token.LeadingTrivia.EmptyIfWhitespace()) .AddRange(token.TrailingTrivia); AccessorDeclarationSyntax newNode = accessorDeclaration .WithBody(body.WithTrailingTrivia(trivia)) .WithSemicolonToken(default(SyntaxToken)); return(context.Document.ReplaceNodeAsync(accessorDeclaration, newNode, cancellationToken)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); break; } } break; } case CompilerDiagnosticIdentifiers.CannotConvertType: { if (!Settings.IsCodeFixEnabled(CodeFixIdentifiers.ChangeForEachType)) { break; } if (token.Kind() != SyntaxKind.ForEachKeyword) { break; } if (!(token.Parent is ForEachStatementSyntax forEachStatement)) { break; } SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); ForEachStatementInfo info = semanticModel.GetForEachStatementInfo(forEachStatement); ITypeSymbol typeSymbol = info.ElementType; if (typeSymbol.SupportsExplicitDeclaration()) { CodeFixRegistrator.ChangeType(context, diagnostic, forEachStatement.Type, typeSymbol, semanticModel, CodeFixIdentifiers.ChangeForEachType); } CodeFixRegistrator.ChangeTypeToVar(context, diagnostic, forEachStatement.Type, CodeFixIdentifiers.ChangeTypeToVar); break; } } } }
private string LowerCaseKind(SymbolKind kind) { return(kind.ToString().ToLowerInvariant()); }
public string ToPathString() => "SymbolKind:" + _symbolKind.ToString();
private static DiagnosticResult GetExpectedDiagnostic(string language, int line, int column, SymbolKind unsupportedSymbolKind) { string fileName = language == LanguageNames.CSharp ? "Test0.cs" : "Test0.vb"; return new DiagnosticResult { Id = DiagnosticIds.UnsupportedSymbolKindArgumentRuleId, Message = string.Format(CodeAnalysisDiagnosticsResources.UnsupportedSymbolKindArgumentToRegisterActionMessage, unsupportedSymbolKind.ToString()), Severity = DiagnosticSeverity.Warning, Locations = new[] { new DiagnosticResultLocation(fileName, line, column) } }; }
private static DiagnosticResult GetExpectedDiagnostic(string language, int line, int column, SymbolKind unsupportedSymbolKind) { string fileName = language == LanguageNames.CSharp ? "Test0.cs" : "Test0.vb"; return(new DiagnosticResult { Id = DiagnosticIds.UnsupportedSymbolKindArgumentRuleId, Message = string.Format(CodeAnalysisDiagnosticsResources.UnsupportedSymbolKindArgumentToRegisterActionMessage, unsupportedSymbolKind.ToString()), Severity = DiagnosticSeverity.Warning, Locations = new[] { new DiagnosticResultLocation(fileName, line, column) } }); }
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context) { if (!Settings.IsAnyCodeFixEnabled( CodeFixIdentifiers.AddArgumentList, CodeFixIdentifiers.ReorderModifiers, CodeFixIdentifiers.ReplaceNullLiteralExpressionWithDefaultValue, CodeFixIdentifiers.ReturnDefaultValue, CodeFixIdentifiers.AddMissingType)) { return; } SyntaxNode root = await context.GetSyntaxRootAsync().ConfigureAwait(false); if (!TryFindToken(root, context.Span.Start, out SyntaxToken token)) { return; } SyntaxKind kind = token.Kind(); foreach (Diagnostic diagnostic in context.Diagnostics) { switch (diagnostic.Id) { case CompilerDiagnosticIdentifiers.OperatorCannotBeAppliedToOperandOfType: { if (!Settings.IsCodeFixEnabled(CodeFixIdentifiers.AddArgumentList)) { break; } if (kind != SyntaxKind.QuestionToken) { break; } if (!token.IsParentKind(SyntaxKind.ConditionalAccessExpression)) { break; } var conditionalAccess = (ConditionalAccessExpressionSyntax)token.Parent; SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); ITypeSymbol typeSymbol = semanticModel.GetTypeSymbol(conditionalAccess.Expression, context.CancellationToken); if (typeSymbol == null || typeSymbol.IsErrorType() || !typeSymbol.IsValueType || typeSymbol.IsConstructedFrom(SpecialType.System_Nullable_T)) { break; } CodeAction codeAction = CodeAction.Create( "Remove '?' operator", cancellationToken => { var textChange = new TextChange(token.Span, ""); return(context.Document.WithTextChangeAsync(textChange, cancellationToken)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); break; } case CompilerDiagnosticIdentifiers.PartialModifierCanOnlyAppearImmediatelyBeforeClassStructInterfaceOrVoid: { if (!Settings.IsCodeFixEnabled(CodeFixIdentifiers.ReorderModifiers)) { break; } ModifiersCodeFixRegistrator.MoveModifier(context, diagnostic, token.Parent, token); break; } case CompilerDiagnosticIdentifiers.ValueCannotBeUsedAsDefaultParameter: { if (!Settings.IsCodeFixEnabled(CodeFixIdentifiers.ReplaceNullLiteralExpressionWithDefaultValue)) { break; } if (!(token.Parent is ParameterSyntax parameter)) { break; } ExpressionSyntax value = parameter.Default?.Value; if (value == null) { break; } if (value.Kind() != SyntaxKind.NullLiteralExpression) { break; } SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); CodeFixRegistrator.ReplaceNullWithDefaultValue(context, diagnostic, value, semanticModel); break; } case CompilerDiagnosticIdentifiers.ObjectOfTypeConvertibleToTypeIsRequired: { if (!Settings.IsCodeFixEnabled(CodeFixIdentifiers.ReturnDefaultValue)) { break; } if (token.Kind() != SyntaxKind.ReturnKeyword) { break; } if (!token.IsParentKind(SyntaxKind.ReturnStatement)) { break; } SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); ISymbol symbol = semanticModel.GetEnclosingSymbol(token.SpanStart, context.CancellationToken); if (symbol == null) { break; } SymbolKind symbolKind = symbol.Kind; ITypeSymbol typeSymbol = null; if (symbolKind == SymbolKind.Method) { var methodSymbol = (IMethodSymbol)symbol; typeSymbol = methodSymbol.ReturnType; if (methodSymbol.IsAsync && (typeSymbol is INamedTypeSymbol namedTypeSymbol)) { ImmutableArray <ITypeSymbol> typeArguments = namedTypeSymbol.TypeArguments; if (typeArguments.Any()) { typeSymbol = typeArguments[0]; } } } else if (symbolKind == SymbolKind.Property) { typeSymbol = ((IPropertySymbol)symbol).Type; } else { Debug.Fail(symbolKind.ToString()); } if (typeSymbol == null) { break; } if (typeSymbol.Kind == SymbolKind.ErrorType) { break; } if (!typeSymbol.SupportsExplicitDeclaration()) { break; } var returnStatement = (ReturnStatementSyntax)token.Parent; CodeAction codeAction = CodeAction.Create( "Return default value", cancellationToken => { ExpressionSyntax expression = typeSymbol.ToDefaultValueSyntax(semanticModel, returnStatement.SpanStart); ReturnStatementSyntax newNode = returnStatement.WithExpression(expression); return(context.Document.ReplaceNodeAsync(returnStatement, newNode, cancellationToken)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); break; } case CompilerDiagnosticIdentifiers.TypeExpected: { if (!Settings.IsCodeFixEnabled(CodeFixIdentifiers.AddMissingType)) { break; } if (token.Kind() != SyntaxKind.CloseParenToken) { break; } if (!(token.Parent is DefaultExpressionSyntax defaultExpression)) { break; } if (!(defaultExpression.Type is IdentifierNameSyntax identifierName)) { break; } if (!identifierName.IsMissing) { break; } SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); TypeInfo typeInfo = semanticModel.GetTypeInfo(defaultExpression, context.CancellationToken); ITypeSymbol convertedType = typeInfo.ConvertedType; if (convertedType?.SupportsExplicitDeclaration() != true) { break; } CodeAction codeAction = CodeAction.Create( $"Add type '{SymbolDisplay.GetMinimalString(convertedType, semanticModel, defaultExpression.SpanStart)}'", cancellationToken => { TypeSyntax newNode = convertedType.ToMinimalTypeSyntax(semanticModel, defaultExpression.SpanStart); newNode = newNode .WithTriviaFrom(identifierName) .WithFormatterAnnotation(); return(context.Document.ReplaceNodeAsync(identifierName, newNode, cancellationToken)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); break; } } } }
public string GetStyledMainSection(string name, SymbolKind type) { var t = type == SymbolKind.Method ? "Procedure" : type.ToString(); return($"({t}) | {name}"); }
public override async Task RegisterCodeFixesAsync(CodeFixContext context) { SyntaxNode root = await context.GetSyntaxRootAsync().ConfigureAwait(false); if (!TryFindToken(root, context.Span.Start, out SyntaxToken token)) { return; } SyntaxKind kind = token.Kind(); Diagnostic diagnostic = context.Diagnostics[0]; Document document = context.Document; switch (diagnostic.Id) { case CompilerDiagnosticIdentifiers.CS0023_OperatorCannotBeAppliedToOperand: { if (kind == SyntaxKind.QuestionToken && token.Parent is ConditionalAccessExpressionSyntax conditionalAccess) { SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); ITypeSymbol typeSymbol = semanticModel.GetTypeSymbol(conditionalAccess.Expression, context.CancellationToken); if (typeSymbol?.IsErrorType() == false && !typeSymbol.IsNullableType()) { if (typeSymbol.IsValueType) { if (IsEnabled(diagnostic.Id, CodeFixIdentifiers.RemoveConditionalAccess, document, root.SyntaxTree)) { CodeAction codeAction = CodeAction.Create( "Remove '?' operator", ct => document.WithTextChangeAsync(token.Span, "", ct), GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); } } else if (typeSymbol.IsReferenceType) { if (IsEnabled(diagnostic.Id, CodeFixIdentifiers.AddArgumentList, document, root.SyntaxTree) && conditionalAccess.WhenNotNull is MemberBindingExpressionSyntax memberBindingExpression) { ConditionalAccessExpressionSyntax newNode = conditionalAccess.WithWhenNotNull( InvocationExpression( memberBindingExpression.WithoutTrailingTrivia(), ArgumentList().WithTrailingTrivia(memberBindingExpression.GetTrailingTrivia()))); CodeAction codeAction = CodeAction.Create( "Add argument list", ct => document.ReplaceNodeAsync(conditionalAccess, newNode, ct), GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); } } } } break; } case CompilerDiagnosticIdentifiers.CS0267_PartialModifierCanOnlyAppearImmediatelyBeforeClassStructInterfaceOrVoid: { if (!IsEnabled(diagnostic.Id, CodeFixIdentifiers.OrderModifiers, document, root.SyntaxTree)) { break; } ModifiersCodeFixRegistrator.MoveModifier(context, diagnostic, token.Parent, token); break; } case CompilerDiagnosticIdentifiers.CS1750_ValueCannotBeUsedAsDefaultParameter: { if (token.Parent is not ParameterSyntax parameter) { break; } ExpressionSyntax value = parameter.Default?.Value; if (value == null) { break; } if (value.IsKind(SyntaxKind.NullLiteralExpression)) { if (IsEnabled(diagnostic.Id, CodeFixIdentifiers.ReplaceNullLiteralExpressionWithDefaultValue, document, root.SyntaxTree)) { SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); CodeFixRegistrator.ReplaceNullWithDefaultValue(context, diagnostic, value, semanticModel); } } else if (!value.IsKind(SyntaxKind.DefaultExpression, SyntaxKind.DefaultLiteralExpression)) { if (IsEnabled(diagnostic.Id, CodeFixIdentifiers.ChangeParameterType, document, root.SyntaxTree)) { SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); ITypeSymbol typeSymbol = semanticModel.GetTypeSymbol(value, context.CancellationToken); if (!typeSymbol.IsKind(SymbolKind.ErrorType)) { CodeFixRegistrator.ChangeType(context, diagnostic, parameter.Type, typeSymbol, semanticModel); } } } break; } case CompilerDiagnosticIdentifiers.CS0126_ObjectOfTypeConvertibleToTypeIsRequired: { if (!IsEnabled(diagnostic.Id, CodeFixIdentifiers.ReturnDefaultValue, document, root.SyntaxTree)) { break; } if (!token.IsKind(SyntaxKind.ReturnKeyword)) { break; } if (!token.IsParentKind(SyntaxKind.ReturnStatement)) { break; } SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); ISymbol symbol = semanticModel.GetEnclosingSymbol(token.SpanStart, context.CancellationToken); if (symbol == null) { break; } SymbolKind symbolKind = symbol.Kind; ITypeSymbol typeSymbol = null; if (symbolKind == SymbolKind.Method) { var methodSymbol = (IMethodSymbol)symbol; typeSymbol = methodSymbol.ReturnType; if (methodSymbol.IsAsync && (typeSymbol is INamedTypeSymbol namedTypeSymbol)) { ImmutableArray <ITypeSymbol> typeArguments = namedTypeSymbol.TypeArguments; if (typeArguments.Any()) { typeSymbol = typeArguments[0]; } } } else if (symbolKind == SymbolKind.Property) { typeSymbol = ((IPropertySymbol)symbol).Type; } else { Debug.Fail(symbolKind.ToString()); } if (typeSymbol == null) { break; } if (typeSymbol.Kind == SymbolKind.ErrorType) { break; } if (!typeSymbol.SupportsExplicitDeclaration()) { break; } var returnStatement = (ReturnStatementSyntax)token.Parent; CodeAction codeAction = CodeAction.Create( "Return default value", ct => { ExpressionSyntax expression = typeSymbol.GetDefaultValueSyntax(document.GetDefaultSyntaxOptions()); if (expression.IsKind(SyntaxKind.DefaultExpression) && document.SupportsLanguageFeature(CSharpLanguageFeature.DefaultLiteral)) { expression = CSharpFactory.DefaultLiteralExpression().WithTriviaFrom(expression); } ReturnStatementSyntax newNode = returnStatement.WithExpression(expression); return(document.ReplaceNodeAsync(returnStatement, newNode, ct)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); break; } case CompilerDiagnosticIdentifiers.CS1031_TypeExpected: { if (!IsEnabled(diagnostic.Id, CodeFixIdentifiers.AddMissingType, document, root.SyntaxTree)) { break; } if (!token.IsKind(SyntaxKind.CloseParenToken)) { break; } if (token.Parent is not DefaultExpressionSyntax defaultExpression) { break; } if (defaultExpression.Type is not IdentifierNameSyntax identifierName) { break; } if (!identifierName.IsMissing) { break; } SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); TypeInfo typeInfo = semanticModel.GetTypeInfo(defaultExpression, context.CancellationToken); ITypeSymbol convertedType = typeInfo.ConvertedType; if (convertedType?.SupportsExplicitDeclaration() != true) { break; } CodeAction codeAction = CodeAction.Create( $"Add type '{SymbolDisplay.ToMinimalDisplayString(convertedType, semanticModel, defaultExpression.SpanStart, SymbolDisplayFormats.DisplayName)}'", ct => { TypeSyntax newType = convertedType.ToTypeSyntax() .WithTriviaFrom(identifierName) .WithFormatterAndSimplifierAnnotation(); return(document.ReplaceNodeAsync(identifierName, newType, ct)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); break; } case CompilerDiagnosticIdentifiers.CS1597_SemicolonAfterMethodOrAccessorBlockIsNotValid: { if (!IsEnabled(diagnostic.Id, CodeFixIdentifiers.RemoveSemicolon, document, root.SyntaxTree)) { break; } if (!token.IsKind(SyntaxKind.SemicolonToken)) { break; } switch (token.Parent) { case MethodDeclarationSyntax methodDeclaration: { BlockSyntax body = methodDeclaration.Body; if (body == null) { break; } CodeAction codeAction = CodeAction.Create( "Remove semicolon", ct => { SyntaxTriviaList trivia = body .GetTrailingTrivia() .EmptyIfWhitespace() .AddRange(token.LeadingTrivia.EmptyIfWhitespace()) .AddRange(token.TrailingTrivia); MethodDeclarationSyntax newNode = methodDeclaration .WithBody(body.WithTrailingTrivia(trivia)) .WithSemicolonToken(default(SyntaxToken)); return(document.ReplaceNodeAsync(methodDeclaration, newNode, ct)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); break; } case PropertyDeclarationSyntax propertyDeclaration: { AccessorListSyntax accessorList = propertyDeclaration.AccessorList; if (accessorList == null) { break; } CodeAction codeAction = CodeAction.Create( "Remove semicolon", ct => { SyntaxTriviaList trivia = accessorList .GetTrailingTrivia() .EmptyIfWhitespace() .AddRange(token.LeadingTrivia.EmptyIfWhitespace()) .AddRange(token.TrailingTrivia); PropertyDeclarationSyntax newNode = propertyDeclaration .WithAccessorList(accessorList.WithTrailingTrivia(trivia)) .WithSemicolonToken(default(SyntaxToken)); return(document.ReplaceNodeAsync(propertyDeclaration, newNode, ct)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); break; } case AccessorDeclarationSyntax accessorDeclaration: { BlockSyntax body = accessorDeclaration.Body; if (body == null) { break; } CodeAction codeAction = CodeAction.Create( "Remove semicolon", ct => { SyntaxTriviaList trivia = body .GetTrailingTrivia() .EmptyIfWhitespace() .AddRange(token.LeadingTrivia.EmptyIfWhitespace()) .AddRange(token.TrailingTrivia); AccessorDeclarationSyntax newNode = accessorDeclaration .WithBody(body.WithTrailingTrivia(trivia)) .WithSemicolonToken(default(SyntaxToken)); return(document.ReplaceNodeAsync(accessorDeclaration, newNode, ct)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); break; } } break; } case CompilerDiagnosticIdentifiers.CS0030_CannotConvertType: { if (!IsEnabled(diagnostic.Id, CodeFixIdentifiers.ChangeForEachType, document, root.SyntaxTree)) { break; } if (!token.IsKind(SyntaxKind.ForEachKeyword)) { break; } if (token.Parent is not ForEachStatementSyntax forEachStatement) { break; } SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); ForEachStatementInfo info = semanticModel.GetForEachStatementInfo(forEachStatement); ITypeSymbol typeSymbol = info.ElementType; if (typeSymbol.SupportsExplicitDeclaration()) { CodeFixRegistrator.ChangeType(context, diagnostic, forEachStatement.Type, typeSymbol, semanticModel, CodeFixIdentifiers.ChangeForEachType); } CodeFixRegistrator.ChangeTypeToVar(context, diagnostic, forEachStatement.Type, CodeFixIdentifiers.ChangeTypeToVar); break; } case CompilerDiagnosticIdentifiers.CS1737_OptionalParametersMustAppearAfterAllRequiredParameters: { if (!IsEnabled(diagnostic.Id, CodeFixIdentifiers.AddDefaultValueToParameter, document, root.SyntaxTree)) { break; } if (token.Parent is not BaseParameterListSyntax parameterList) { break; } SeparatedSyntaxList <ParameterSyntax> parameters = parameterList.Parameters; ParameterSyntax parameter = null; for (int i = 0; i < parameters.Count; i++) { ParameterSyntax p = parameters[i]; if (p.FullSpan.End <= token.SpanStart) { parameter = p; } else { break; } } SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false); IParameterSymbol parameterSymbol = semanticModel.GetDeclaredSymbol(parameter, context.CancellationToken); ITypeSymbol typeSymbol = parameterSymbol.Type; if (typeSymbol.Kind == SymbolKind.ErrorType) { break; } CodeAction codeAction = CodeAction.Create( "Add default value", ct => { ExpressionSyntax defaultValue = typeSymbol.GetDefaultValueSyntax(document.GetDefaultSyntaxOptions()); ParameterSyntax newParameter = parameter .WithDefault(EqualsValueClause(defaultValue).WithTrailingTrivia(parameter.GetTrailingTrivia())) .WithoutTrailingTrivia() .WithFormatterAnnotation(); return(document.ReplaceNodeAsync(parameter, newParameter, ct)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); break; } case CompilerDiagnosticIdentifiers.CS8632_AnnotationForNullableReferenceTypesShouldOnlyBeUsedWithinNullableAnnotationsContext: { if (!IsEnabled(diagnostic.Id, CodeFixIdentifiers.RemoveAnnotationForNullableReferenceTypes, document, root.SyntaxTree)) { break; } if (!token.IsKind(SyntaxKind.QuestionToken)) { return; } CodeAction codeAction = CodeAction.Create( "Remove 'nullable' annotation", ct => { var textChange = new TextChange(token.Span, ""); return(document.WithTextChangeAsync(textChange, ct)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); break; } case CompilerDiagnosticIdentifiers.CS8602_DereferenceOfPossiblyNullReference: { if (!IsEnabled(diagnostic.Id, CodeFixIdentifiers.UseNullForgivingOperator, document, root.SyntaxTree)) { break; } Debug.Assert(token.IsKind(SyntaxKind.IdentifierToken), token.Kind().ToString()); if (!token.IsKind(SyntaxKind.IdentifierToken)) { return; } if (!token.IsParentKind(SyntaxKind.IdentifierName)) { return; } SyntaxNode node = token.Parent .WalkUp(f => f.IsKind(SyntaxKind.SimpleMemberAccessExpression, SyntaxKind.InvocationExpression, SyntaxKind.ElementAccessExpression)) .Parent; if (node.IsKind(SyntaxKind.ExpressionStatement) && token.SpanStart == node.SpanStart) { CodeAction codeAction = CodeAction.Create( "Use null propagation operator", ct => { var textChange = new TextChange(new TextSpan(token.Span.End, 0), "?"); return(document.WithTextChangeAsync(textChange, ct)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); } return; } case CompilerDiagnosticIdentifiers.CS8604_PossibleNullReferenceArgumentForParameter: { if (!IsEnabled(diagnostic.Id, CodeFixIdentifiers.UseNullForgivingOperator, document, root.SyntaxTree)) { break; } Debug.Assert(token.IsKind(SyntaxKind.IdentifierToken), token.Kind().ToString()); if (!token.IsKind(SyntaxKind.IdentifierToken)) { return; } if (!token.IsParentKind(SyntaxKind.IdentifierName)) { return; } CodeAction codeAction = CodeAction.Create( "Use null-forgiving operator", ct => { var identifierName = (IdentifierNameSyntax)token.Parent; PostfixUnaryExpressionSyntax newExpression = SuppressNullableWarningExpression(identifierName.WithoutTrivia()) .WithTriviaFrom(identifierName); return(document.ReplaceNodeAsync(identifierName, newExpression, ct)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); return; } case CompilerDiagnosticIdentifiers.CS8618_NonNullableMemberIsUninitialized: { if (!IsEnabled(diagnostic.Id, CodeFixIdentifiers.UseNullForgivingOperator, document, root.SyntaxTree)) { break; } Debug.Assert(token.IsKind(SyntaxKind.IdentifierToken), token.Kind().ToString()); if (!token.IsKind(SyntaxKind.IdentifierToken)) { return; } if (token.IsParentKind(SyntaxKind.PropertyDeclaration)) { CodeAction codeAction = CodeAction.Create( "Use null-forgiving operator", ct => { var property = (PropertyDeclarationSyntax)token.Parent; PropertyDeclarationSyntax newProperty = property .WithoutTrailingTrivia() .WithInitializer(EqualsValueClause(SuppressNullableWarningExpression(NullLiteralExpression()))) .WithSemicolonToken(SemicolonToken().WithTrailingTrivia(property.GetTrailingTrivia())); return(document.ReplaceNodeAsync(property, newProperty, ct)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); } else { SyntaxDebug.Assert( (token.IsParentKind(SyntaxKind.VariableDeclarator) && token.Parent.IsParentKind(SyntaxKind.VariableDeclaration) && token.Parent.Parent.IsParentKind(SyntaxKind.FieldDeclaration, SyntaxKind.EventFieldDeclaration)) || token.IsParentKind(SyntaxKind.ConstructorDeclaration), token); if (token.IsParentKind(SyntaxKind.VariableDeclarator) && token.Parent.IsParentKind(SyntaxKind.VariableDeclaration) && token.Parent.Parent.IsParentKind(SyntaxKind.FieldDeclaration)) { CodeAction codeAction = CodeAction.Create( "Use null-forgiving operator", ct => { var declarator = (VariableDeclaratorSyntax)token.Parent; VariableDeclaratorSyntax newDeclarator = declarator .WithoutTrailingTrivia() .WithInitializer( EqualsValueClause(SuppressNullableWarningExpression(NullLiteralExpression())) .WithTrailingTrivia(declarator.GetTrailingTrivia())); return(document.ReplaceNodeAsync(declarator, newDeclarator, ct)); }, GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); } } break; } case CompilerDiagnosticIdentifiers.CS8403_MethodWithIteratorBlockMustBeAsyncToReturnIAsyncEnumerableOfT: { if (!IsEnabled(diagnostic.Id, CodeFixIdentifiers.AddAsyncModifier, document, root.SyntaxTree)) { break; } SyntaxDebug.Assert(token.IsKind(SyntaxKind.IdentifierToken), token); SyntaxDebug.Assert(token.IsParentKind(SyntaxKind.MethodDeclaration, SyntaxKind.LocalFunctionStatement), token.Parent); if (token.IsParentKind(SyntaxKind.MethodDeclaration, SyntaxKind.LocalFunctionStatement)) { ModifiersCodeFixRegistrator.AddModifier( context, diagnostic, token.Parent, SyntaxKind.AsyncKeyword, additionalKey: CodeFixIdentifiers.AddAsyncModifier); } break; } } }
private static HashSet <string> GetParameterNames(IParameterSymbol parameterSymbol) { var reservedNames = new HashSet <string>(OrdinalComparer); ISymbol containingSymbol = parameterSymbol.ContainingSymbol; if (containingSymbol != null) { SymbolKind kind = containingSymbol.Kind; Debug.Assert(kind == SymbolKind.Method || kind == SymbolKind.Property, kind.ToString()); if (kind == SymbolKind.Method) { var methodSymbol = (IMethodSymbol)containingSymbol; foreach (IParameterSymbol symbol in methodSymbol.Parameters) { if (!parameterSymbol.Equals(symbol)) { reservedNames.Add(symbol.Name); } } } else if (kind == SymbolKind.Property) { var propertySymbol = (IPropertySymbol)containingSymbol; if (propertySymbol.IsIndexer) { foreach (IParameterSymbol symbol in propertySymbol.Parameters) { if (!parameterSymbol.Equals(symbol)) { reservedNames.Add(symbol.Name); } } } } } return(reservedNames); }
public override void DumpFields(Indenter stream) { stream.WriteLine("Name = {0}", _name); stream.WriteLine("Kind = {0}", _kind.ToString()); stream.WriteLine("Type = {0,4:D4}", _type.Id); }