public static async Task ComputeRefactoringsAsync(RefactoringContext context, MethodDeclarationSyntax methodDeclaration)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeMethodReturnTypeToVoid) &&
context.Span.IsEmptyAndContainedInSpan(methodDeclaration))
{
await ChangeMethodReturnTypeToVoidRefactoring.ComputeRefactoringAsync(context, methodDeclaration).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddTypeParameter))
{
AddTypeParameterRefactoring.ComputeRefactoring(context, methodDeclaration);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceMethodWithProperty) &&
methodDeclaration.HeaderSpan().Contains(context.Span) &&
ReplaceMethodWithPropertyRefactoring.CanRefactor(methodDeclaration))
{
context.RegisterRefactoring(
$"Replace '{methodDeclaration.Identifier.ValueText}' with property",
cancellationToken => ReplaceMethodWithPropertyRefactoring.RefactorAsync(context.Document, methodDeclaration, cancellationToken),
RefactoringIdentifiers.ReplaceMethodWithProperty);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.UseExpressionBodiedMember) &&
context.SupportsCSharp6 &&
UseExpressionBodiedMemberRefactoring.CanRefactor(methodDeclaration, context.Span))
{
context.RegisterRefactoring(
UseExpressionBodiedMemberRefactoring.Title,
cancellationToken => UseExpressionBodiedMemberRefactoring.RefactorAsync(context.Document, methodDeclaration, cancellationToken),
RefactoringIdentifiers.UseExpressionBodiedMember);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MakeMemberAbstract) &&
context.Span.IsEmptyAndContainedInSpan(methodDeclaration.Identifier))
{
MakeMethodAbstractRefactoring.ComputeRefactoring(context, methodDeclaration);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MakeMemberVirtual) &&
methodDeclaration.HeaderSpan().Contains(context.Span))
{
MakeMethodVirtualRefactoring.ComputeRefactoring(context, methodDeclaration);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CopyDocumentationCommentFromBaseMember) &&
methodDeclaration.HeaderSpan().Contains(context.Span) &&
!methodDeclaration.HasDocumentationComment())
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
CopyDocumentationCommentFromBaseMemberRefactoring.ComputeRefactoring(context, methodDeclaration, semanticModel);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.RenameMethodAccordingToTypeName))
{
await RenameMethodAccoringToTypeNameAsync(context, methodDeclaration).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddParameterToInterfaceMember) &&
context.Span.IsEmptyAndContainedInSpanOrBetweenSpans(methodDeclaration.Identifier))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
foreach (CodeAction codeAction in AddParameterToInterfaceMemberRefactoring.ComputeRefactoringForImplicitImplementation(
new CommonFixContext(context.Document, RefactoringIdentifiers.AddParameterToInterfaceMember, semanticModel, context.CancellationToken),
methodDeclaration))
{
context.RegisterRefactoring(codeAction);
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddMemberToInterface) &&
context.Span.IsEmptyAndContainedInSpanOrBetweenSpans(methodDeclaration.Identifier))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
AddMemberToInterfaceRefactoring.ComputeRefactoring(context, methodDeclaration, semanticModel);
}
}
public static async Task ComputeRefactoringAsync(RefactoringContext context, MemberDeclarationListSelection selectedMembers)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeAccessibility) &&
!selectedMembers.Parent.IsKind(SyntaxKind.InterfaceDeclaration))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
AccessibilityFilter validAccessibilities = ChangeAccessibilityAnalysis.GetValidAccessibilityFilter(selectedMembers, semanticModel, context.CancellationToken);
if (validAccessibilities != AccessibilityFilter.None)
{
bool canHaveMultipleDeclarations = CanHaveMultipleDeclarations();
TryRegisterRefactoring(validAccessibilities, Accessibility.Public, canHaveMultipleDeclarations);
TryRegisterRefactoring(validAccessibilities, Accessibility.Internal, canHaveMultipleDeclarations);
TryRegisterRefactoring(validAccessibilities, Accessibility.Protected, canHaveMultipleDeclarations);
TryRegisterRefactoring(validAccessibilities, Accessibility.Private, canHaveMultipleDeclarations);
}
}
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.UseExpressionBodiedMember,
RefactoringIdentifiers.ExpandExpressionBody))
{
InvertBodyAndExpressionBodyRefactoring.ComputeRefactoring(context, selectedMembers);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.InitializeFieldFromConstructor) &&
!selectedMembers.Parent.IsKind(SyntaxKind.InterfaceDeclaration))
{
InitializeFieldFromConstructorRefactoring.ComputeRefactoring(context, selectedMembers);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddEmptyLineBetweenDeclarations))
{
AddEmptyLineBetweenDeclarationsRefactoring.ComputeRefactoring(context, selectedMembers);
}
void TryRegisterRefactoring(AccessibilityFilter accessibilities, Accessibility accessibility, bool canHaveMultipleDeclarations)
{
if ((accessibilities & accessibility.GetAccessibilityFilter()) != 0)
{
if (canHaveMultipleDeclarations)
{
context.RegisterRefactoring(
ChangeAccessibilityRefactoring.GetTitle(accessibility),
async cancellationToken =>
{
SemanticModel semanticModel = await context.Document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
return(await ChangeAccessibilityRefactoring.RefactorAsync(context.Document.Solution(), selectedMembers, accessibility, semanticModel, cancellationToken).ConfigureAwait(false));
},
_accessiblityIdentifierMap[accessibility]);
}
else
{
context.RegisterRefactoring(
ChangeAccessibilityRefactoring.GetTitle(accessibility),
cancellationToken => ChangeAccessibilityRefactoring.RefactorAsync(context.Document, selectedMembers, accessibility, cancellationToken),
EquivalenceKey.Join(RefactoringIdentifiers.ChangeAccessibility, accessibility.ToString()));
}
}
}
bool CanHaveMultipleDeclarations()
{
foreach (MemberDeclarationSyntax member in selectedMembers)
{
switch (member.Kind())
{
case SyntaxKind.ClassDeclaration:
{
if (((ClassDeclarationSyntax)member).Modifiers.Contains(SyntaxKind.PartialKeyword))
{
return(true);
}
break;
}
case SyntaxKind.InterfaceDeclaration:
{
if (((InterfaceDeclarationSyntax)member).Modifiers.Contains(SyntaxKind.PartialKeyword))
{
return(true);
}
break;
}
case SyntaxKind.StructDeclaration:
{
if (((StructDeclarationSyntax)member).Modifiers.Contains(SyntaxKind.PartialKeyword))
{
return(true);
}
break;
}
case SyntaxKind.MethodDeclaration:
{
if (((MethodDeclarationSyntax)member).Modifiers.ContainsAny(SyntaxKind.PartialKeyword, SyntaxKind.AbstractKeyword, SyntaxKind.VirtualKeyword, SyntaxKind.OverrideKeyword))
{
return(true);
}
break;
}
case SyntaxKind.PropertyDeclaration:
{
if (((PropertyDeclarationSyntax)member).Modifiers.ContainsAny(SyntaxKind.AbstractKeyword, SyntaxKind.VirtualKeyword, SyntaxKind.OverrideKeyword))
{
return(true);
}
break;
}
case SyntaxKind.IndexerDeclaration:
{
if (((IndexerDeclarationSyntax)member).Modifiers.ContainsAny(SyntaxKind.AbstractKeyword, SyntaxKind.VirtualKeyword, SyntaxKind.OverrideKeyword))
{
return(true);
}
break;
}
case SyntaxKind.EventDeclaration:
{
if (((EventDeclarationSyntax)member).Modifiers.ContainsAny(SyntaxKind.AbstractKeyword, SyntaxKind.VirtualKeyword, SyntaxKind.OverrideKeyword))
{
return(true);
}
break;
}
case SyntaxKind.EventFieldDeclaration:
{
if (((EventFieldDeclarationSyntax)member).Modifiers.ContainsAny(SyntaxKind.AbstractKeyword, SyntaxKind.VirtualKeyword, SyntaxKind.OverrideKeyword))
{
return(true);
}
break;
}
}
}
return(false);
}
}
public static async Task ComputeRefactoringAsync(RefactoringContext context, StatementContainerSelection selectedStatements)
{
if (selectedStatements.Any())
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.WrapInUsingStatement))
{
var refactoring = new WrapInUsingStatementRefactoring();
await refactoring.ComputeRefactoringAsync(context, selectedStatements).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CollapseToInitializer))
{
await CollapseToInitializerRefactoring.ComputeRefactoringsAsync(context, selectedStatements).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MergeIfStatements))
{
MergeIfStatementsRefactoring.ComputeRefactorings(context, selectedStatements);
}
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.UseCoalesceExpressionInsteadOfIf,
RefactoringIdentifiers.UseConditionalExpressionInsteadOfIf,
RefactoringIdentifiers.SimplifyIf))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
var options = new IfAnalysisOptions(
useCoalesceExpression: context.IsRefactoringEnabled(RefactoringIdentifiers.UseCoalesceExpressionInsteadOfIf),
useConditionalExpression: context.IsRefactoringEnabled(RefactoringIdentifiers.UseConditionalExpressionInsteadOfIf),
useBooleanExpression: context.IsRefactoringEnabled(RefactoringIdentifiers.SimplifyIf));
foreach (IfRefactoring refactoring in IfRefactoring.Analyze(selectedStatements, options, semanticModel, context.CancellationToken))
{
context.RegisterRefactoring(
refactoring.Title,
cancellationToken => refactoring.RefactorAsync(context.Document, cancellationToken));
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MergeLocalDeclarations))
{
await MergeLocalDeclarationsRefactoring.ComputeRefactoringsAsync(context, selectedStatements).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MergeAssignmentExpressionWithReturnStatement))
{
MergeAssignmentExpressionWithReturnStatementRefactoring.ComputeRefactorings(context, selectedStatements);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CheckExpressionForNull))
{
await CheckExpressionForNullRefactoring.ComputeRefactoringAsync(context, selectedStatements).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceWhileWithFor))
{
await ReplaceWhileWithForRefactoring.ComputeRefactoringAsync(context, selectedStatements).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.WrapInCondition))
{
context.RegisterRefactoring(
"Wrap in condition",
cancellationToken =>
{
var refactoring = new WrapInIfStatementRefactoring();
return(refactoring.RefactorAsync(context.Document, selectedStatements, cancellationToken));
});
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.WrapInTryCatch))
{
context.RegisterRefactoring(
"Wrap in try-catch",
cancellationToken =>
{
var refactoring = new WrapInTryCatchRefactoring();
return(refactoring.RefactorAsync(context.Document, selectedStatements, cancellationToken));
});
}
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, PropertyDeclarationSyntax propertyDeclaration)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MarkMemberAsStatic) &&
propertyDeclaration.Span.Contains(context.Span) &&
MarkMemberAsStaticRefactoring.CanRefactor(propertyDeclaration))
{
context.RegisterRefactoring(
"Mark property as static",
cancellationToken => MarkMemberAsStaticRefactoring.RefactorAsync(context.Document, propertyDeclaration, cancellationToken));
MarkAllMembersAsStaticRefactoring.RegisterRefactoring(context, (ClassDeclarationSyntax)propertyDeclaration.Parent);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplacePropertyWithMethod) &&
propertyDeclaration.HeaderSpan().Contains(context.Span) &&
ReplacePropertyWithMethodRefactoring.CanRefactor(context, propertyDeclaration))
{
string propertyName = propertyDeclaration.Identifier.ValueText;
string title = $"Replace '{propertyName}' with method";
if (propertyDeclaration.AccessorList.Accessors.Count > 1)
{
title += "s";
}
context.RegisterRefactoring(
title,
cancellationToken => ReplacePropertyWithMethodRefactoring.RefactorAsync(context.Document, propertyDeclaration, cancellationToken));
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.UseExpressionBodiedMember) &&
propertyDeclaration.AccessorList?.Span.Contains(context.Span) == true &&
context.SupportsCSharp6 &&
UseExpressionBodiedMemberRefactoring.CanRefactor(propertyDeclaration))
{
context.RegisterRefactoring(
"Use expression-bodied member",
cancellationToken => UseExpressionBodiedMemberRefactoring.RefactorAsync(context.Document, propertyDeclaration, cancellationToken));
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.RemovePropertyInitializer) &&
RemovePropertyInitializerRefactoring.CanRefactor(context, propertyDeclaration))
{
context.RegisterRefactoring(
"Remove property initializer",
cancellationToken => RemovePropertyInitializerRefactoring.RefactorAsync(context.Document, propertyDeclaration, cancellationToken));
}
if (context.SupportsSemanticModel)
{
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.ExpandProperty,
RefactoringIdentifiers.ExpandPropertyAndAddBackingField) &&
propertyDeclaration.Span.Contains(context.Span) &&
ExpandPropertyRefactoring.CanRefactor(propertyDeclaration))
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ExpandProperty))
{
context.RegisterRefactoring(
"Expand property",
cancellationToken => ExpandPropertyRefactoring.RefactorAsync(context.Document, propertyDeclaration, cancellationToken));
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ExpandPropertyAndAddBackingField))
{
context.RegisterRefactoring(
"Expand property and add backing field",
cancellationToken => ExpandPropertyAndAddBackingFieldRefactoring.RefactorAsync(context.Document, propertyDeclaration, context.Settings.PrefixFieldIdentifierWithUnderscore, cancellationToken));
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.NotifyPropertyChanged) &&
await NotifyPropertyChangedRefactoring.CanRefactorAsync(context, propertyDeclaration).ConfigureAwait(false))
{
context.RegisterRefactoring(
"Notify property changed",
cancellationToken =>
{
return(NotifyPropertyChangedRefactoring.RefactorAsync(
context.Document,
propertyDeclaration,
context.SupportsCSharp6,
cancellationToken));
});
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MakeMemberAbstract) &&
propertyDeclaration.HeaderSpan().Contains(context.Span) &&
MakeMemberAbstractRefactoring.CanRefactor(propertyDeclaration))
{
context.RegisterRefactoring(
"Make property abstract",
cancellationToken => MakeMemberAbstractRefactoring.RefactorAsync(context.Document, propertyDeclaration, cancellationToken));
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CopyDocumentationCommentFromBaseMember) &&
propertyDeclaration.HeaderSpan().Contains(context.Span))
{
await CopyDocumentationCommentFromBaseMemberRefactoring.ComputeRefactoringAsync(context, propertyDeclaration).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.RenamePropertyAccordingToTypeName) &&
context.SupportsSemanticModel &&
propertyDeclaration.Type != null &&
propertyDeclaration.Identifier.Span.Contains(context.Span))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
ITypeSymbol typeSymbol = semanticModel
.GetTypeInfo(propertyDeclaration.Type, context.CancellationToken)
.Type;
if (typeSymbol?.IsErrorType() == false)
{
string newName = SyntaxUtility.CreateIdentifier(typeSymbol);
if (!string.IsNullOrEmpty(newName))
{
newName = TextUtility.FirstCharToUpper(newName);
if (!string.Equals(newName, propertyDeclaration.Identifier.ValueText, StringComparison.Ordinal))
{
ISymbol symbol = semanticModel.GetDeclaredSymbol(propertyDeclaration, context.CancellationToken);
context.RegisterRefactoring(
$"Rename property to '{newName}'",
cancellationToken => SymbolRenamer.RenameAsync(context.Document, symbol, newName, cancellationToken));
}
}
}
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, LocalFunctionStatementSyntax localFunctionStatement)
{
if (localFunctionStatement.IsParentKind(SyntaxKind.Block))
{
BlockSyntax body = localFunctionStatement.Body;
if (body != null)
{
if (body.OpenBraceToken.Span.Contains(context.Span) ||
body.CloseBraceToken.Span.Contains(context.Span))
{
if (context.IsRefactoringEnabled(RefactoringDescriptors.RemoveMemberDeclaration))
{
context.RegisterRefactoring(CodeActionFactory.RemoveStatement(context.Document, localFunctionStatement, equivalenceKey: EquivalenceKey.Create(RefactoringDescriptors.RemoveMemberDeclaration)));
}
if (context.IsRefactoringEnabled(RefactoringDescriptors.CopyMemberDeclaration))
{
context.RegisterRefactoring(
"Copy local function",
ct => CopyMemberDeclarationRefactoring.RefactorAsync(
context.Document,
localFunctionStatement,
copyAfter: body.CloseBraceToken.Span.Contains(context.Span),
ct),
RefactoringDescriptors.CopyMemberDeclaration);
}
if (context.IsRefactoringEnabled(RefactoringDescriptors.CommentOutMemberDeclaration))
{
CommentOutRefactoring.RegisterRefactoring(context, localFunctionStatement);
}
}
}
}
if (context.IsRefactoringEnabled(RefactoringDescriptors.ChangeMethodReturnTypeToVoid) &&
context.Span.IsEmptyAndContainedInSpan(localFunctionStatement))
{
await ChangeMethodReturnTypeToVoidRefactoring.ComputeRefactoringAsync(context, localFunctionStatement).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringDescriptors.AddGenericParameterToDeclaration))
{
AddGenericParameterToDeclarationRefactoring.ComputeRefactoring(context, localFunctionStatement);
}
if (context.IsRefactoringEnabled(RefactoringDescriptors.ConvertBlockBodyToExpressionBody) &&
ConvertBlockBodyToExpressionBodyRefactoring.CanRefactor(localFunctionStatement, context.Span))
{
context.RegisterRefactoring(
ConvertBlockBodyToExpressionBodyRefactoring.Title,
ct => ConvertBlockBodyToExpressionBodyRefactoring.RefactorAsync(context.Document, localFunctionStatement, ct),
RefactoringDescriptors.ConvertBlockBodyToExpressionBody);
}
if (context.IsRefactoringEnabled(RefactoringDescriptors.MoveUnsafeContextToContainingDeclaration))
{
MoveUnsafeContextToContainingDeclarationRefactoring.ComputeRefactoring(context, localFunctionStatement);
}
}
public static void ComputeRefactorings(RefactoringContext context, SwitchStatementSyntax switchStatement)
{
bool fRemoveStatements = context.IsRefactoringEnabled(RefactoringDescriptors.MergeSwitchSections);
bool fAddBraces = context.IsRefactoringEnabled(RefactoringDescriptors.AddBracesToSwitchSections);
bool fRemoveBraces = context.IsRefactoringEnabled(RefactoringDescriptors.RemoveBracesFromSwitchSections);
if (!fRemoveStatements && !fAddBraces && !fRemoveBraces)
{
return;
}
if (!SyntaxListSelection <SwitchSectionSyntax> .TryCreate(switchStatement.Sections, context.Span, out SyntaxListSelection <SwitchSectionSyntax> selectedSections))
{
return;
}
if (fAddBraces || fRemoveBraces)
{
var addBraces = new List <SwitchSectionSyntax>();
var removeBraces = new List <SwitchSectionSyntax>();
foreach (SwitchSectionSyntax section in selectedSections)
{
if (addBraces.Count > 0 &&
removeBraces.Count > 0)
{
break;
}
BracesAnalysis analysis = BracesAnalysis.AnalyzeBraces(section);
if (analysis.AddBraces)
{
addBraces.Add(section);
}
else if (analysis.RemoveBraces)
{
removeBraces.Add(section);
}
}
if (fAddBraces && addBraces.Count > 0)
{
string title = AddBracesToSwitchSectionRefactoring.Title;
if (addBraces.Count > 1)
{
title += "s";
}
context.RegisterRefactoring(
title,
ct =>
{
return(AddBracesToSwitchSectionsRefactoring.RefactorAsync(
context.Document,
switchStatement,
addBraces.ToArray(),
ct));
},
RefactoringDescriptors.AddBracesToSwitchSections);
}
if (fRemoveBraces &&
removeBraces.Count > 0)
{
string title = RemoveBracesFromSwitchSectionRefactoring.Title;
if (removeBraces.Count > 1)
{
title += "s";
}
context.RegisterRefactoring(
title,
ct =>
{
return(RemoveBracesFromSwitchSectionsRefactoring.RefactorAsync(
context.Document,
switchStatement,
removeBraces.ToArray(),
ct));
},
RefactoringDescriptors.RemoveBracesFromSwitchSections);
}
}
if (fRemoveStatements)
{
var title = "Remove statements from section";
if (selectedSections.Count > 1)
{
title += "s";
}
context.RegisterRefactoring(
title,
ct =>
{
return(MergeSwitchSectionsRefactoring.RefactorAsync(
context.Document,
switchStatement,
selectedSections.ToImmutableArray(),
ct));
},
RefactoringDescriptors.MergeSwitchSections);
}
}
public static void ComputeRefactorings(RefactoringContext context, InterpolatedStringExpressionSyntax interpolatedString)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.InsertStringInterpolation) &&
context.Span.IsEmpty &&
InsertInterpolationRefactoring.CanRefactor(context, interpolatedString))
{
context.RegisterRefactoring("Insert interpolation",
cancellationToken =>
{
return(InsertInterpolationRefactoring.RefactorAsync(
context.Document,
interpolatedString,
context.Span,
addNameOf: false,
cancellationToken: cancellationToken));
},
RefactoringIdentifiers.InsertStringInterpolation);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ConvertInterpolatedStringToStringLiteral) &&
ReplaceInterpolatedStringWithStringLiteralAnalysis.IsFixable(interpolatedString))
{
context.RegisterRefactoring("Remove '$'",
cancellationToken =>
{
return(ConvertInterpolatedStringToStringLiteralRefactoring.RefactorAsync(
context.Document,
interpolatedString,
cancellationToken));
},
RefactoringIdentifiers.ConvertInterpolatedStringToStringLiteral);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceInterpolatedStringWithInterpolationExpression) &&
interpolatedString.Span.Contains(context.Span) &&
ReplaceInterpolatedStringWithInterpolationExpressionRefactoring.CanRefactor(interpolatedString))
{
ExpressionSyntax expression = ((InterpolationSyntax)(interpolatedString.Contents[0])).Expression;
context.RegisterRefactoring(
$"Replace interpolated string with '{expression}'",
cancellationToken =>
{
return(ReplaceInterpolatedStringWithInterpolationExpressionRefactoring.RefactorAsync(
context.Document,
interpolatedString,
cancellationToken));
},
RefactoringIdentifiers.ReplaceInterpolatedStringWithInterpolationExpression);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ConvertInterpolatedStringToConcatenation) &&
context.Span.IsEmptyAndContainedInSpanOrBetweenSpans(interpolatedString))
{
ConvertInterpolatedStringToConcatenationRefactoring.ComputeRefactoring(context, interpolatedString);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ConvertInterpolatedStringToStringFormat) &&
context.Span.IsEmptyAndContainedInSpanOrBetweenSpans(interpolatedString))
{
ConvertInterpolatedStringToStringFormatRefactoring.ComputeRefactoring(context, interpolatedString);
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, BinaryExpressionSyntax binaryExpression)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.NegateOperator))
{
SyntaxToken operatorToken = binaryExpression.OperatorToken;
if (operatorToken.Span.Contains(context.Span) &&
NegateOperatorRefactoring.CanBeNegated(operatorToken))
{
context.RegisterRefactoring(
"Negate operator",
cancellationToken => NegateOperatorRefactoring.RefactorAsync(context.Document, operatorToken, cancellationToken));
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddBooleanComparison) &&
binaryExpression.IsKind(SyntaxKind.LogicalAndExpression, SyntaxKind.LogicalOrExpression) &&
binaryExpression.Left?.IsMissing == false &&
binaryExpression.Right?.IsMissing == false &&
context.SupportsSemanticModel)
{
if (binaryExpression.Left.Span.Contains(context.Span))
{
await AddBooleanComparisonRefactoring.ComputeRefactoringAsync(context, binaryExpression.Left).ConfigureAwait(false);
}
else if (binaryExpression.Right.Span.Contains(context.Span))
{
await AddBooleanComparisonRefactoring.ComputeRefactoringAsync(context, binaryExpression.Right).ConfigureAwait(false);
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.FormatBinaryExpression))
{
FormatBinaryExpressionRefactoring.ComputeRefactorings(context, binaryExpression);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.NegateBinaryExpression))
{
NegateBinaryExpressionRefactoring.ComputeRefactoring(context, binaryExpression);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ExpandCoalesceExpression) &&
binaryExpression.OperatorToken.Span.Contains(context.Span) &&
ExpandCoalesceExpressionRefactoring.CanRefactor(binaryExpression))
{
context.RegisterRefactoring(
"Expand ??",
cancellationToken =>
{
return(ExpandCoalesceExpressionRefactoring.RefactorAsync(
context.Document,
binaryExpression,
cancellationToken));
});
}
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.MergeStringLiterals,
RefactoringIdentifiers.MergeStringLiteralsIntoMultilineStringLiteral) &&
MergeStringLiteralsRefactoring.CanRefactor(context, binaryExpression))
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MergeStringLiterals))
{
context.RegisterRefactoring(
"Merge string literals",
cancellationToken => MergeStringLiteralsRefactoring.RefactorAsync(context.Document, binaryExpression, cancellationToken: cancellationToken));
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MergeStringLiteralsIntoMultilineStringLiteral) &&
binaryExpression
.DescendantTrivia(binaryExpression.Span)
.Any(f => f.IsKind(SyntaxKind.EndOfLineTrivia)))
{
context.RegisterRefactoring(
"Merge string literals into multiline string literal",
cancellationToken => MergeStringLiteralsRefactoring.RefactorAsync(context.Document, binaryExpression, multiline: true, cancellationToken: cancellationToken));
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.SwapExpressionsInBinaryExpression) &&
SwapExpressionsRefactoring.CanRefactor(binaryExpression) &&
context.Span.IsBetweenSpans(binaryExpression))
{
context.RegisterRefactoring(
"Swap expressions",
cancellationToken =>
{
return(SwapExpressionsRefactoring.RefactorAsync(
context.Document,
binaryExpression,
cancellationToken));
});
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceAsWithCast))
{
ReplaceAsWithCastRefactoring.ComputeRefactoring(context, binaryExpression);
}
if (context.Span.IsContainedInSpanOrBetweenSpans(binaryExpression.OperatorToken) &&
context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.ReplaceEqualsExpressionWithStringEquals,
RefactoringIdentifiers.ReplaceEqualsExpressionWithStringIsNullOrWhiteSpace))
{
await ReplaceEqualsExpressionRefactoring.ComputeRefactoringsAsync(context, binaryExpression).ConfigureAwait(false);
}
}
public static void ComputeRefactoring(RefactoringContext context, MemberDeclarationSyntax member)
{
MemberDeclarationListInfo info = SyntaxInfo.MemberDeclarationListInfo(member.Parent);
if (!info.Success)
{
return;
}
SyntaxList <MemberDeclarationSyntax> members = info.Members;
if (members.Count <= 1)
{
return;
}
int index = IndexOfMemberToSwap(member, members, context.Span);
if (index == -1)
{
return;
}
SyntaxTree tree = member.SyntaxTree;
FileLinePositionSpan fileLinePositionSpan = tree.GetLineSpan(context.Span, context.CancellationToken);
int startLine = fileLinePositionSpan.StartLine();
int endLine = fileLinePositionSpan.EndLine();
if (startLine <= tree.GetEndLine(members[index].TrimmedSpan(), context.CancellationToken))
{
return;
}
if (endLine >= tree.GetStartLine(members[index + 1].TrimmedSpan(), context.CancellationToken))
{
return;
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.RemoveMemberDeclarations))
{
context.RegisterRefactoring(
"Remove members above",
ct => ReplaceMembersAsync(context.Document, info, members.Skip(index + 1), ct),
EquivalenceKey.Join(RefactoringIdentifiers.RemoveMemberDeclarations, "Above"));
context.RegisterRefactoring(
"Remove members below",
ct => ReplaceMembersAsync(context.Document, info, members.Take(index + 1), ct),
EquivalenceKey.Join(RefactoringIdentifiers.RemoveMemberDeclarations, "Below"));
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.SwapMemberDeclarations))
{
context.RegisterRefactoring(
"Swap members",
ct => SwapMembersAsync(context.Document, info, index, ct),
RefactoringIdentifiers.SwapMemberDeclarations);
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, IfStatementSyntax ifStatement)
{
if (ifStatement.IsTopmostIf() &&
(context.Span.IsEmptyAndContainedInSpan(ifStatement.IfKeyword) || context.Span.IsBetweenSpans(ifStatement)))
{
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.UseCoalesceExpressionInsteadOfIf,
RefactoringIdentifiers.UseConditionalExpressionInsteadOfIf,
RefactoringIdentifiers.SimplifyIf))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
IfAnalysisOptions options = GetIfAnalysisOptions(context);
foreach (IfAnalysis analysis in IfAnalysis.Analyze(ifStatement, options, semanticModel, context.CancellationToken))
{
string refactoringId = GetRefactoringIdentifier(analysis);
if (context.IsRefactoringEnabled(refactoringId))
{
context.RegisterRefactoring(
analysis.Title,
cancellationToken => IfRefactoring.RefactorAsync(context.Document, analysis, cancellationToken),
equivalenceKey: refactoringId);
}
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.SwapIfElse))
{
SwapIfElseRefactoring.ComputeRefactoring(context, ifStatement);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceIfWithSwitch))
{
await ReplaceIfWithSwitchRefactoring.ComputeRefactoringAsync(context, ifStatement).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.SplitIfStatement))
{
SplitIfStatementRefactoring.ComputeRefactoring(context, ifStatement);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MergeIfWithParentIf) &&
context.Span.IsEmptyAndContainedInSpan(ifStatement.IfKeyword))
{
MergeIfWithParentIfRefactoring.ComputeRefactoring(context, ifStatement);
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReduceIfNesting) &&
context.Span.IsEmptyAndContainedInSpanOrBetweenSpans(ifStatement.IfKeyword))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
ReduceIfNestingAnalysisResult analysis = ReduceIfNestingAnalysis.Analyze(
ifStatement,
semanticModel,
options: ReduceIfNestingOptions.AllowNestedFix
| ReduceIfNestingOptions.AllowIfInsideIfElse
| ReduceIfNestingOptions.AllowLoop
| ReduceIfNestingOptions.AllowSwitchSection,
taskSymbol: semanticModel.GetTypeByMetadataName(MetadataNames.System_Threading_Tasks_Task),
cancellationToken: context.CancellationToken);
if (analysis.Success)
{
context.RegisterRefactoring(
"Reduce if nesting",
cancellationToken => ReduceIfNestingRefactoring.RefactorAsync(context.Document, ifStatement, analysis.JumpKind, false, cancellationToken),
RefactoringIdentifiers.ReduceIfNesting);
if (ReduceIfNestingAnalysis.IsFixableRecursively(ifStatement, analysis.JumpKind))
{
context.RegisterRefactoring(
"Reduce if nesting (recursively)",
cancellationToken => ReduceIfNestingRefactoring.RefactorAsync(context.Document, ifStatement, analysis.JumpKind, true, cancellationToken),
EquivalenceKey.Join(RefactoringIdentifiers.ReduceIfNesting, "Recursive"));
}
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.SplitIfElse) &&
context.Span.IsEmptyAndContainedInSpanOrBetweenSpans(ifStatement.IfKeyword))
{
SplitIfElseRefactoring.ComputeRefactoring(context, ifStatement);
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, SwitchSectionSyntax switchSection)
{
if (SelectedStatementsRefactoring.IsAnyRefactoringEnabled(context) &&
StatementListSelection.TryCreate(switchSection, context.Span, out StatementListSelection selectedStatements))
{
await SelectedStatementsRefactoring.ComputeRefactoringAsync(context, selectedStatements).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.SplitSwitchLabels))
{
SplitSwitchLabelsRefactoring.ComputeRefactoring(context, switchSection);
}
if (context.Span.IsEmpty &&
context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.AddBracesToSwitchSection,
RefactoringIdentifiers.AddBracesToSwitchSections,
RefactoringIdentifiers.RemoveBracesFromSwitchSection,
RefactoringIdentifiers.RemoveBracesFromSwitchSections))
{
var switchStatement = (SwitchStatementSyntax)switchSection.Parent;
SyntaxList <SwitchSectionSyntax> sections = switchStatement.Sections;
BracesAnalysis analysis = BracesAnalysis.AnalyzeBraces(switchSection);
if (analysis.AddBraces)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddBracesToSwitchSection))
{
context.RegisterRefactoring(
AddBracesToSwitchSectionRefactoring.Title,
cancellationToken => AddBracesToSwitchSectionRefactoring.RefactorAsync(context.Document, switchSection, cancellationToken),
RefactoringIdentifiers.AddBracesToSwitchSection);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddBracesToSwitchSections) &&
sections.Any(f => f != switchSection && AddBracesToSwitchSectionAnalysis.CanAddBraces(f)))
{
context.RegisterRefactoring(
AddBracesToSwitchSectionsRefactoring.Title,
cancellationToken => AddBracesToSwitchSectionsRefactoring.RefactorAsync(context.Document, switchStatement, null, cancellationToken),
RefactoringIdentifiers.AddBracesToSwitchSections);
}
}
else if (analysis.RemoveBraces)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.RemoveBracesFromSwitchSection))
{
context.RegisterRefactoring(
RemoveBracesFromSwitchSectionRefactoring.Title,
cancellationToken => RemoveBracesFromSwitchSectionRefactoring.RefactorAsync(context.Document, switchSection, cancellationToken),
RefactoringIdentifiers.RemoveBracesFromSwitchSection);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.RemoveBracesFromSwitchSections) &&
sections.Any(f => f != switchSection && RemoveBracesFromSwitchSectionRefactoring.CanRemoveBraces(f)))
{
context.RegisterRefactoring(
RemoveBracesFromSwitchSectionsRefactoring.Title,
cancellationToken => RemoveBracesFromSwitchSectionsRefactoring.RefactorAsync(context.Document, switchStatement, null, cancellationToken),
RefactoringIdentifiers.RemoveBracesFromSwitchSections);
}
}
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, PropertyDeclarationSyntax propertyDeclaration)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplacePropertyWithMethod) &&
propertyDeclaration.HeaderSpan().Contains(context.Span))
{
ReplacePropertyWithMethodRefactoring.ComputeRefactoring(context, propertyDeclaration);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.RemovePropertyInitializer) &&
RemovePropertyInitializerRefactoring.CanRefactor(context, propertyDeclaration))
{
context.RegisterRefactoring(
"Remove property initializer",
cancellationToken => RemovePropertyInitializerRefactoring.RefactorAsync(context.Document, propertyDeclaration, cancellationToken));
}
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.ExpandProperty,
RefactoringIdentifiers.ExpandPropertyAndAddBackingField) &&
propertyDeclaration.Span.Contains(context.Span) &&
ExpandPropertyRefactoring.CanRefactor(propertyDeclaration))
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ExpandProperty))
{
context.RegisterRefactoring(
"Expand property",
cancellationToken => ExpandPropertyRefactoring.RefactorAsync(context.Document, propertyDeclaration, cancellationToken));
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ExpandPropertyAndAddBackingField))
{
context.RegisterRefactoring(
"Expand property and add backing field",
cancellationToken => ExpandPropertyAndAddBackingFieldRefactoring.RefactorAsync(context.Document, propertyDeclaration, context.Settings.PrefixFieldIdentifierWithUnderscore, cancellationToken));
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.NotifyPropertyChanged) &&
await NotifyPropertyChangedRefactoring.CanRefactorAsync(context, propertyDeclaration).ConfigureAwait(false))
{
context.RegisterRefactoring(
"Notify property changed",
cancellationToken =>
{
return(NotifyPropertyChangedRefactoring.RefactorAsync(
context.Document,
propertyDeclaration,
context.SupportsCSharp6,
cancellationToken));
});
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MakeMemberAbstract) &&
propertyDeclaration.HeaderSpan().Contains(context.Span))
{
MakePropertyAbstractRefactoring.ComputeRefactoring(context, propertyDeclaration);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MakeMemberVirtual) &&
propertyDeclaration.HeaderSpan().Contains(context.Span))
{
MakePropertyVirtualRefactoring.ComputeRefactoring(context, propertyDeclaration);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CopyDocumentationCommentFromBaseMember) &&
propertyDeclaration.HeaderSpan().Contains(context.Span))
{
await CopyDocumentationCommentFromBaseMemberRefactoring.ComputeRefactoringAsync(context, propertyDeclaration).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.RenamePropertyAccordingToTypeName))
{
await RenamePropertyAccodingToTypeName(context, propertyDeclaration).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddMemberToInterface) &&
context.Span.IsEmptyAndContainedInSpanOrBetweenSpans(propertyDeclaration.Identifier))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
AddMemberToInterfaceRefactoring.ComputeRefactoring(context, propertyDeclaration, semanticModel);
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, VariableDeclarationSyntax variableDeclaration)
{
TypeSyntax type = variableDeclaration.Type;
if (type?.Span.Contains(context.Span) == true &&
context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.ChangeExplicitTypeToVar,
RefactoringIdentifiers.ChangeVarToExplicitType,
RefactoringIdentifiers.ChangeTypeAccordingToExpression))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
TypeAnalysis analysis = CSharpTypeAnalysis.AnalyzeType(variableDeclaration, semanticModel, context.CancellationToken);
if (analysis.IsExplicit)
{
if (analysis.SupportsImplicit &&
context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeExplicitTypeToVar))
{
context.RegisterRefactoring(CodeActionFactory.ChangeTypeToVar(context.Document, type, equivalenceKey: RefactoringIdentifiers.ChangeExplicitTypeToVar));
}
if (!variableDeclaration.ContainsDiagnostics &&
context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeTypeAccordingToExpression))
{
ChangeTypeAccordingToExpression(context, variableDeclaration, analysis.Symbol, semanticModel);
}
}
else if (analysis.SupportsExplicit &&
context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeVarToExplicitType))
{
ITypeSymbol typeSymbol = semanticModel.GetTypeSymbol(type, context.CancellationToken);
VariableDeclaratorSyntax variableDeclarator = variableDeclaration.Variables.SingleOrDefault(shouldThrow: false);
if (variableDeclarator?.Initializer?.Value != null &&
typeSymbol.OriginalDefinition.EqualsOrInheritsFromTaskOfT())
{
Func <CancellationToken, Task <Document> > createChangedDocument = DocumentRefactoringFactory.ChangeTypeAndAddAwait(
context.Document,
variableDeclaration,
variableDeclarator,
typeSymbol,
semanticModel,
context.CancellationToken);
if (createChangedDocument != null)
{
ITypeSymbol typeArgument = ((INamedTypeSymbol)typeSymbol).TypeArguments[0];
context.RegisterRefactoring(
$"Change type to '{SymbolDisplay.ToMinimalDisplayString(typeArgument, semanticModel, type.SpanStart)}' and add 'await'",
createChangedDocument,
EquivalenceKey.Join(RefactoringIdentifiers.ChangeVarToExplicitType, "AddAwait"));
}
}
context.RegisterRefactoring(CodeActionFactory.ChangeType(context.Document, type, typeSymbol, semanticModel, equivalenceKey: RefactoringIdentifiers.ChangeVarToExplicitType));
}
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, MethodDeclarationSyntax methodDeclaration)
{
if (methodDeclaration.Span.Contains(context.Span))
{
await ChangeMethodReturnTypeToVoidRefactoring.ComputeRefactoringAsync(context, methodDeclaration).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddTypeParameter))
{
AddTypeParameterRefactoring.ComputeRefactoring(context, methodDeclaration);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceMethodWithProperty) &&
methodDeclaration.HeaderSpan().Contains(context.Span) &&
ReplaceMethodWithPropertyRefactoring.CanRefactor(methodDeclaration))
{
context.RegisterRefactoring(
$"Replace '{methodDeclaration.Identifier.ValueText}' with property",
cancellationToken => ReplaceMethodWithPropertyRefactoring.RefactorAsync(context.Document, methodDeclaration, cancellationToken));
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.UseExpressionBodiedMember) &&
methodDeclaration.Body?.Span.Contains(context.Span) == true &&
context.SupportsCSharp6 &&
UseExpressionBodiedMemberRefactoring.CanRefactor(methodDeclaration))
{
context.RegisterRefactoring(
"Use expression-bodied member",
cancellationToken => UseExpressionBodiedMemberRefactoring.RefactorAsync(context.Document, methodDeclaration, cancellationToken));
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MakeMemberAbstract) &&
methodDeclaration.HeaderSpan().Contains(context.Span))
{
MakeMethodAbstractRefactoring.ComputeRefactoring(context, methodDeclaration);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MakeMemberVirtual) &&
methodDeclaration.HeaderSpan().Contains(context.Span))
{
MakeMethodVirtualRefactoring.ComputeRefactoring(context, methodDeclaration);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CopyDocumentationCommentFromBaseMember) &&
methodDeclaration.HeaderSpan().Contains(context.Span))
{
await CopyDocumentationCommentFromBaseMemberRefactoring.ComputeRefactoringAsync(context, methodDeclaration).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.RenameMethodAccordingToTypeName))
{
await RenameMethodAccoringToTypeNameAsync(context, methodDeclaration).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddMemberToInterface) &&
context.Span.IsEmptyAndContainedInSpanOrBetweenSpans(methodDeclaration.Identifier))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
AddMemberToInterfaceRefactoring.ComputeRefactoring(context, methodDeclaration, semanticModel);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.UseListInsteadOfYield) &&
methodDeclaration.Identifier.Span.Contains(context.Span))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
UseListInsteadOfYieldRefactoring.ComputeRefactoring(context, methodDeclaration, semanticModel);
}
}
public static async Task ComputeRefactoringAsync(RefactoringContext context, SelectedStatementCollection selectedStatements)
{
if (selectedStatements.Any())
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.WrapInUsingStatement))
{
var refactoring = new WrapInUsingStatementRefactoring();
await refactoring.ComputeRefactoringAsync(context, selectedStatements).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CollapseToInitializer))
{
await CollapseToInitializerRefactoring.ComputeRefactoringsAsync(context, selectedStatements).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MergeIfStatements))
{
MergeIfStatementsRefactoring.ComputeRefactorings(context, selectedStatements);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceIfStatementWithReturnStatement))
{
ReplaceIfAndReturnWithReturnRefactoring.ComputeRefactoring(context, selectedStatements);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MergeLocalDeclarations))
{
await MergeLocalDeclarationsRefactoring.ComputeRefactoringsAsync(context, selectedStatements).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MergeAssignmentExpressionWithReturnStatement))
{
MergeAssignmentExpressionWithReturnStatementRefactoring.ComputeRefactorings(context, selectedStatements);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CheckExpressionForNull))
{
await CheckExpressionForNullRefactoring.ComputeRefactoringAsync(context, selectedStatements).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceWhileWithFor))
{
await ReplaceWhileWithForRefactoring.ComputeRefactoringAsync(context, selectedStatements).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.WrapInCondition))
{
context.RegisterRefactoring(
"Wrap in condition",
cancellationToken =>
{
var refactoring = new WrapInIfStatementRefactoring();
return(refactoring.RefactorAsync(context.Document, selectedStatements, cancellationToken));
});
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.WrapInTryCatch))
{
context.RegisterRefactoring(
"Wrap in try-catch",
cancellationToken =>
{
var refactoring = new WrapInTryCatchRefactoring();
return(refactoring.RefactorAsync(context.Document, selectedStatements, cancellationToken));
});
}
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, SyntaxNode node)
{
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.WrapInRegion,
RefactoringIdentifiers.WrapInIfDirective,
RefactoringIdentifiers.RemoveEmptyLines))
{
SyntaxNode root = context.Root;
TextSpan span = context.Span;
if (!IsFullLineSpan(node, span))
{
return;
}
Document document = context.Document;
SourceText sourceText = await document.GetTextAsync(context.CancellationToken).ConfigureAwait(false);
if (!TextLineCollectionSelection.TryCreate(sourceText.Lines, span, out TextLineCollectionSelection selectedLines))
{
return;
}
if (!IsInMultiLineDocumentationComment(root, span.Start) &&
!IsInMultiLineDocumentationComment(root, span.End))
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.WrapInRegion))
{
context.RegisterRefactoring(
"Wrap in region",
ct => WrapInRegionRefactoring.Instance.RefactorAsync(document, selectedLines, ct),
RefactoringIdentifiers.WrapInRegion);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.WrapInIfDirective))
{
context.RegisterRefactoring(
"Wrap in #if",
ct => WrapInIfDirectiveRefactoring.Instance.RefactorAsync(document, selectedLines, ct),
RefactoringIdentifiers.WrapInIfDirective);
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.RemoveEmptyLines))
{
bool containsEmptyLine = false;
foreach (TextLine line in selectedLines)
{
context.ThrowIfCancellationRequested();
if (line.IsEmptyOrWhiteSpace() &&
root.FindTrivia(line.End, findInsideTrivia: true).IsEndOfLineTrivia())
{
containsEmptyLine = true;
break;
}
}
if (containsEmptyLine)
{
context.RegisterRefactoring(
"Remove empty lines",
ct =>
{
ct.ThrowIfCancellationRequested();
IEnumerable <TextChange> textChanges = selectedLines
.Where(line => line.IsEmptyOrWhiteSpace() && root.FindTrivia(line.End, findInsideTrivia: true).IsEndOfLineTrivia())
.Select(line => new TextChange(line.SpanIncludingLineBreak, ""));
return(document.WithTextChangesAsync(textChanges, ct));
},
RefactoringIdentifiers.RemoveEmptyLines);
}
}
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, BinaryExpressionSyntax binaryExpression)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.NegateOperator))
{
SyntaxToken operatorToken = binaryExpression.OperatorToken;
if (operatorToken.Span.Contains(context.Span) &&
NegateOperatorRefactoring.CanBeNegated(operatorToken))
{
context.RegisterRefactoring(
"Negate operator",
cancellationToken => NegateOperatorRefactoring.RefactorAsync(context.Document, operatorToken, cancellationToken));
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.FormatBinaryExpression))
{
FormatBinaryExpressionRefactoring.ComputeRefactorings(context, binaryExpression);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.NegateBinaryExpression))
{
NegateBinaryExpressionRefactoring.ComputeRefactoring(context, binaryExpression);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ExpandCoalesceExpression) &&
binaryExpression.OperatorToken.Span.Contains(context.Span))
{
ExpandCoalesceExpressionRefactoring.ComputeRefactoring(context, binaryExpression);
}
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.JoinStringExpressions,
RefactoringIdentifiers.UseStringBuilderInsteadOfConcatenation) &&
context.Span.IsBetweenSpans(binaryExpression) &&
binaryExpression.IsKind(SyntaxKind.AddExpression))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
StringConcatenationExpression concatenation;
if (StringConcatenationExpression.TryCreate(binaryExpression, semanticModel, out concatenation, context.CancellationToken))
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.JoinStringExpressions))
{
JoinStringExpressionsRefactoring.ComputeRefactoring(context, concatenation);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.UseStringBuilderInsteadOfConcatenation))
{
UseStringBuilderInsteadOfConcatenationRefactoring.ComputeRefactoring(context, concatenation);
}
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.SwapExpressionsInBinaryExpression) &&
context.Span.IsBetweenSpans(binaryExpression))
{
SwapExpressionsInBinaryExpressionRefactoring.ComputeRefactoring(context, binaryExpression);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceAsWithCast) &&
context.Span.IsEmptyAndContainedInSpanOrBetweenSpans(binaryExpression))
{
ReplaceAsWithCastRefactoring.ComputeRefactoring(context, binaryExpression);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.NegateIsExpression))
{
NegateIsExpressionRefactoring.ComputeRefactoring(context, binaryExpression);
}
if (context.Span.IsContainedInSpanOrBetweenSpans(binaryExpression.OperatorToken))
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceEqualsExpressionWithStringEquals))
{
await ReplaceEqualsExpressionWithStringEqualsRefactoring.ComputeRefactoringAsync(context, binaryExpression).ConfigureAwait(false);
}
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.ReplaceEqualsExpressionWithStringIsNullOrEmpty,
RefactoringIdentifiers.ReplaceEqualsExpressionWithStringIsNullOrWhiteSpace))
{
await ReplaceEqualsExpressionRefactoring.ComputeRefactoringsAsync(context, binaryExpression).ConfigureAwait(false);
}
}
if (!context.Span.IsBetweenSpans(binaryExpression) &&
context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.ExtractExpressionFromCondition,
RefactoringIdentifiers.JoinStringExpressions))
{
BinaryExpressionSelection binaryExpressionSelection = BinaryExpressionSelection.Create(binaryExpression, context.Span);
if (binaryExpressionSelection.Expressions.Length > 1)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ExtractExpressionFromCondition))
{
ExtractConditionRefactoring.ComputeRefactoring(context, binaryExpressionSelection);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.JoinStringExpressions) &&
binaryExpression.IsKind(SyntaxKind.AddExpression))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
StringConcatenationExpression concatenation;
if (StringConcatenationExpression.TryCreate(binaryExpressionSelection, semanticModel, out concatenation, context.CancellationToken))
{
JoinStringExpressionsRefactoring.ComputeRefactoring(context, concatenation);
}
}
}
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, BinaryExpressionSyntax binaryExpression)
{
SyntaxToken operatorToken = binaryExpression.OperatorToken;
if (context.IsRefactoringEnabled(RefactoringIdentifiers.InvertOperator) &&
context.Span.IsEmptyAndContainedInSpanOrBetweenSpans(operatorToken) &&
InvertOperatorRefactoring.CanBeInverted(operatorToken))
{
context.RegisterRefactoring(
"Invert operator",
cancellationToken => InvertOperatorRefactoring.RefactorAsync(context.Document, operatorToken, cancellationToken),
RefactoringIdentifiers.InvertOperator);
}
if (context.Span.IsEmptyAndContainedInSpan(operatorToken))
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.InvertBinaryExpression))
{
InvertBinaryExpressionRefactoring.ComputeRefactoring(context, binaryExpression);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.SwapBinaryOperands))
{
SwapBinaryOperandsRefactoring.ComputeRefactoring(context, binaryExpression);
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.WrapBinaryExpression))
{
WrapBinaryExpressionRefactoring.ComputeRefactorings(context, binaryExpression);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ExpandCoalesceExpression) &&
operatorToken.Span.Contains(context.Span))
{
ExpandCoalesceExpressionRefactoring.ComputeRefactoring(context, binaryExpression);
}
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.ExtractExpressionFromCondition,
RefactoringIdentifiers.JoinStringExpressions,
RefactoringIdentifiers.UseStringBuilderInsteadOfConcatenation) &&
!context.Span.IsEmpty &&
binaryExpression.IsKind(SyntaxKind.AddExpression, SyntaxKind.LogicalAndExpression, SyntaxKind.LogicalOrExpression))
{
ExpressionChain chain = binaryExpression.AsChain(context.Span);
ExpressionChain.Enumerator en = chain.GetEnumerator();
if (en.MoveNext() &&
en.MoveNext())
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ExtractExpressionFromCondition))
{
ExtractConditionRefactoring.ComputeRefactoring(context, chain);
}
if (binaryExpression.IsKind(SyntaxKind.AddExpression))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
StringConcatenationExpressionInfo concatenationInfo = SyntaxInfo.StringConcatenationExpressionInfo(chain, semanticModel, context.CancellationToken);
if (concatenationInfo.Success)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.JoinStringExpressions))
{
JoinStringExpressionsRefactoring.ComputeRefactoring(context, concatenationInfo);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.UseStringBuilderInsteadOfConcatenation))
{
UseStringBuilderInsteadOfConcatenationRefactoring.ComputeRefactoring(context, concatenationInfo);
}
}
}
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceAsWithCast) &&
context.Span.IsEmptyAndContainedInSpanOrBetweenSpans(binaryExpression))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
if (ReplaceAsWithCastAnalysis.IsFixable(binaryExpression, semanticModel, context.CancellationToken))
{
context.RegisterRefactoring(
ReplaceAsWithCastRefactoring.Title,
cancellationToken => ReplaceAsWithCastRefactoring.RefactorAsync(context.Document, binaryExpression, cancellationToken),
RefactoringIdentifiers.ReplaceAsWithCast);
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.InvertIsExpression))
{
InvertIsExpressionRefactoring.ComputeRefactoring(context, binaryExpression);
}
if (context.Span.IsContainedInSpanOrBetweenSpans(operatorToken))
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceEqualsExpressionWithStringEquals))
{
await ReplaceEqualsExpressionWithStringEqualsRefactoring.ComputeRefactoringAsync(context, binaryExpression).ConfigureAwait(false);
}
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.ReplaceEqualsExpressionWithStringIsNullOrEmpty,
RefactoringIdentifiers.ReplaceEqualsExpressionWithStringIsNullOrWhiteSpace))
{
await ReplaceEqualsExpressionRefactoring.ComputeRefactoringsAsync(context, binaryExpression).ConfigureAwait(false);
}
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, MethodDeclarationSyntax methodDeclaration)
{
if (methodDeclaration.Span.Contains(context.Span))
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MarkMemberAsStatic) &&
MarkMemberAsStaticRefactoring.CanRefactor(methodDeclaration))
{
context.RegisterRefactoring(
"Mark method as static",
cancellationToken => MarkMemberAsStaticRefactoring.RefactorAsync(context.Document, methodDeclaration, cancellationToken));
}
await ChangeMethodReturnTypeToVoidRefactoring.ComputeRefactoringAsync(context, methodDeclaration).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MarkContainingClassAsAbstract) &&
methodDeclaration.HeaderSpan().Contains(context.Span) &&
MarkContainingClassAsAbstractRefactoring.CanRefactor(methodDeclaration))
{
context.RegisterRefactoring(
"Mark containing class as abstract",
cancellationToken => MarkContainingClassAsAbstractRefactoring.RefactorAsync(context.Document, methodDeclaration, cancellationToken));
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceMethodWithProperty) &&
methodDeclaration.HeaderSpan().Contains(context.Span) &&
ReplaceMethodWithPropertyRefactoring.CanRefactor(methodDeclaration))
{
context.RegisterRefactoring(
$"Replace '{methodDeclaration.Identifier.ValueText}' with property",
cancellationToken => ReplaceMethodWithPropertyRefactoring.RefactorAsync(context.Document, methodDeclaration, cancellationToken));
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.UseExpressionBodiedMember) &&
methodDeclaration.Body?.Span.Contains(context.Span) == true &&
context.SupportsCSharp6 &&
UseExpressionBodiedMemberRefactoring.CanRefactor(methodDeclaration))
{
context.RegisterRefactoring(
"Use expression-bodied member",
cancellationToken => UseExpressionBodiedMemberRefactoring.RefactorAsync(context.Document, methodDeclaration, cancellationToken));
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MakeMemberAbstract) &&
methodDeclaration.HeaderSpan().Contains(context.Span) &&
MakeMemberAbstractRefactoring.CanRefactor(methodDeclaration))
{
context.RegisterRefactoring(
"Make method abstract",
cancellationToken => MakeMemberAbstractRefactoring.RefactorAsync(context.Document, methodDeclaration, cancellationToken));
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MakeMemberVirtual) &&
methodDeclaration.HeaderSpan().Contains(context.Span))
{
MakeMemberVirtualRefactoring.ComputeRefactoring(context, methodDeclaration);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CopyDocumentationCommentFromBaseMember) &&
methodDeclaration.HeaderSpan().Contains(context.Span))
{
await CopyDocumentationCommentFromBaseMemberRefactoring.ComputeRefactoringAsync(context, methodDeclaration).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.RenameMethodAccordingToTypeName))
{
await RenameMethodAccoringToTypeNameAsync(context, methodDeclaration).ConfigureAwait(false);
}
}
public static bool IsAnyRefactoringEnabled(RefactoringContext context)
{
return(context.IsRefactoringEnabled(RefactoringDescriptors.WrapStatementsInUsingStatement) ||
context.IsRefactoringEnabled(RefactoringDescriptors.UseObjectInitializer) ||
context.IsRefactoringEnabled(RefactoringDescriptors.MergeIfStatements) ||
context.IsRefactoringEnabled(RefactoringDescriptors.ConvertStatementsToIfElse) ||
context.IsRefactoringEnabled(RefactoringDescriptors.MergeLocalDeclarations) ||
context.IsRefactoringEnabled(RefactoringDescriptors.WrapStatementsInCondition) ||
context.IsRefactoringEnabled(RefactoringDescriptors.WrapLinesInTryCatch) ||
context.IsRefactoringEnabled(RefactoringDescriptors.UseCoalesceExpressionInsteadOfIf) ||
context.IsRefactoringEnabled(RefactoringDescriptors.ConvertIfToConditionalExpression) ||
context.IsRefactoringEnabled(RefactoringDescriptors.SimplifyIf) ||
context.IsRefactoringEnabled(RefactoringDescriptors.CheckExpressionForNull) ||
context.IsRefactoringEnabled(RefactoringDescriptors.ConvertWhileToFor));
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, MemberDeclarationSyntax member)
{
SyntaxKind kind = member.Kind();
switch (kind)
{
case SyntaxKind.MethodDeclaration:
case SyntaxKind.IndexerDeclaration:
case SyntaxKind.PropertyDeclaration:
case SyntaxKind.OperatorDeclaration:
case SyntaxKind.ConversionOperatorDeclaration:
case SyntaxKind.ConstructorDeclaration:
case SyntaxKind.EventDeclaration:
case SyntaxKind.NamespaceDeclaration:
case SyntaxKind.ClassDeclaration:
case SyntaxKind.StructDeclaration:
case SyntaxKind.InterfaceDeclaration:
case SyntaxKind.EnumDeclaration:
{
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.RemoveMember,
RefactoringIdentifiers.DuplicateMember,
RefactoringIdentifiers.CommentOutMember) &&
BraceContainsSpan(member, context.Span))
{
if (member.IsParentKind(
SyntaxKind.NamespaceDeclaration,
SyntaxKind.ClassDeclaration,
SyntaxKind.StructDeclaration,
SyntaxKind.InterfaceDeclaration,
SyntaxKind.CompilationUnit))
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.RemoveMember))
{
context.RegisterRefactoring(
"Remove " + CSharpFacts.GetTitle(member),
cancellationToken => context.Document.RemoveMemberAsync(member, cancellationToken),
RefactoringIdentifiers.RemoveMember);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.DuplicateMember))
{
context.RegisterRefactoring(
"Duplicate " + CSharpFacts.GetTitle(member),
cancellationToken => DuplicateMemberDeclarationRefactoring.RefactorAsync(context.Document, member, cancellationToken),
RefactoringIdentifiers.DuplicateMember);
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CommentOutMember))
{
CommentOutRefactoring.RegisterRefactoring(context, member);
}
}
break;
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.RemoveAllStatements))
{
RemoveAllStatementsRefactoring.ComputeRefactoring(context, member);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.RemoveAllMemberDeclarations))
{
RemoveAllMemberDeclarationsRefactoring.ComputeRefactoring(context, member);
}
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.SwapMemberDeclarations,
RefactoringIdentifiers.RemoveMemberDeclarations) &&
!member.Span.IntersectsWith(context.Span))
{
MemberDeclarationsRefactoring.ComputeRefactoring(context, member);
}
switch (kind)
{
case SyntaxKind.NamespaceDeclaration:
{
var namespaceDeclaration = (NamespaceDeclarationSyntax)member;
NamespaceDeclarationRefactoring.ComputeRefactorings(context, namespaceDeclaration);
if (MemberDeclarationListSelection.TryCreate(namespaceDeclaration, context.Span, out MemberDeclarationListSelection selectedMembers))
{
await SelectedMemberDeclarationsRefactoring.ComputeRefactoringAsync(context, selectedMembers).ConfigureAwait(false);
}
break;
}
case SyntaxKind.ClassDeclaration:
{
var classDeclaration = (ClassDeclarationSyntax)member;
await ClassDeclarationRefactoring.ComputeRefactoringsAsync(context, classDeclaration).ConfigureAwait(false);
if (MemberDeclarationListSelection.TryCreate(classDeclaration, context.Span, out MemberDeclarationListSelection selectedMembers))
{
await SelectedMemberDeclarationsRefactoring.ComputeRefactoringAsync(context, selectedMembers).ConfigureAwait(false);
}
break;
}
case SyntaxKind.StructDeclaration:
{
var structDeclaration = (StructDeclarationSyntax)member;
await StructDeclarationRefactoring.ComputeRefactoringsAsync(context, structDeclaration).ConfigureAwait(false);
if (MemberDeclarationListSelection.TryCreate(structDeclaration, context.Span, out MemberDeclarationListSelection selectedMembers))
{
await SelectedMemberDeclarationsRefactoring.ComputeRefactoringAsync(context, selectedMembers).ConfigureAwait(false);
}
break;
}
case SyntaxKind.InterfaceDeclaration:
{
var interfaceDeclaration = (InterfaceDeclarationSyntax)member;
InterfaceDeclarationRefactoring.ComputeRefactorings(context, interfaceDeclaration);
if (MemberDeclarationListSelection.TryCreate(interfaceDeclaration, context.Span, out MemberDeclarationListSelection selectedMembers))
{
await SelectedMemberDeclarationsRefactoring.ComputeRefactoringAsync(context, selectedMembers).ConfigureAwait(false);
}
break;
}
case SyntaxKind.EnumDeclaration:
{
await EnumDeclarationRefactoring.ComputeRefactoringAsync(context, (EnumDeclarationSyntax)member).ConfigureAwait(false);
break;
}
case SyntaxKind.EnumMemberDeclaration:
{
await EnumMemberDeclarationRefactoring.ComputeRefactoringAsync(context, (EnumMemberDeclarationSyntax)member).ConfigureAwait(false);
break;
}
case SyntaxKind.DelegateDeclaration:
{
DelegateDeclarationRefactoring.ComputeRefactorings(context, (DelegateDeclarationSyntax)member);
break;
}
case SyntaxKind.MethodDeclaration:
{
await MethodDeclarationRefactoring.ComputeRefactoringsAsync(context, (MethodDeclarationSyntax)member).ConfigureAwait(false);
break;
}
case SyntaxKind.ConstructorDeclaration:
{
await ConstructorDeclarationRefactoring.ComputeRefactoringsAsync(context, (ConstructorDeclarationSyntax)member).ConfigureAwait(false);
break;
}
case SyntaxKind.DestructorDeclaration:
{
DestructorDeclarationRefactoring.ComputeRefactorings(context, (DestructorDeclarationSyntax)member);
break;
}
case SyntaxKind.IndexerDeclaration:
{
await IndexerDeclarationRefactoring.ComputeRefactoringsAsync(context, (IndexerDeclarationSyntax)member).ConfigureAwait(false);
break;
}
case SyntaxKind.PropertyDeclaration:
{
await PropertyDeclarationRefactoring.ComputeRefactoringsAsync(context, (PropertyDeclarationSyntax)member).ConfigureAwait(false);
break;
}
case SyntaxKind.OperatorDeclaration:
{
ComputeRefactorings(context, (OperatorDeclarationSyntax)member);
break;
}
case SyntaxKind.ConversionOperatorDeclaration:
{
ComputeRefactorings(context, (ConversionOperatorDeclarationSyntax)member);
break;
}
case SyntaxKind.FieldDeclaration:
{
await FieldDeclarationRefactoring.ComputeRefactoringsAsync(context, (FieldDeclarationSyntax)member).ConfigureAwait(false);
break;
}
case SyntaxKind.EventDeclaration:
{
await EventDeclarationRefactoring.ComputeRefactoringsAsync(context, (EventDeclarationSyntax)member).ConfigureAwait(false);
break;
}
case SyntaxKind.EventFieldDeclaration:
{
await EventFieldDeclarationRefactoring.ComputeRefactoringsAsync(context, (EventFieldDeclarationSyntax)member).ConfigureAwait(false);
break;
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MoveUnsafeContextToContainingDeclaration))
{
MoveUnsafeContextToContainingDeclarationRefactoring.ComputeRefactoring(context, member);
}
}
public static async Task ComputeRefactoringAsync(RefactoringContext context, StatementListSelection selectedStatements)
{
if (context.IsRefactoringEnabled(RefactoringDescriptors.WrapStatementsInUsingStatement))
{
var refactoring = new WrapStatementsInUsingStatementRefactoring();
await refactoring.ComputeRefactoringAsync(context, selectedStatements).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringDescriptors.UseObjectInitializer))
{
await UseObjectInitializerRefactoring.ComputeRefactoringsAsync(context, selectedStatements).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringDescriptors.MergeIfStatements))
{
MergeIfStatementsRefactoring.ComputeRefactorings(context, selectedStatements);
}
if (context.IsRefactoringEnabled(RefactoringDescriptors.ConvertStatementsToIfElse))
{
ConvertStatementsToIfElseRefactoring.ComputeRefactorings(context, selectedStatements);
}
if (context.IsAnyRefactoringEnabled(
RefactoringDescriptors.UseCoalesceExpressionInsteadOfIf,
RefactoringDescriptors.ConvertIfToConditionalExpression,
RefactoringDescriptors.SimplifyIf))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
IfAnalysisOptions options = IfStatementRefactoring.GetIfAnalysisOptions(context);
foreach (IfAnalysis analysis in IfAnalysis.Analyze(selectedStatements, options, semanticModel, context.CancellationToken))
{
RefactoringDescriptor refactoring = IfStatementRefactoring.GetRefactoringDescriptor(analysis);
if (context.IsRefactoringEnabled(refactoring))
{
context.RegisterRefactoring(
analysis.Title,
ct => IfRefactoring.RefactorAsync(context.Document, analysis, ct),
refactoring);
}
}
}
if (context.IsRefactoringEnabled(RefactoringDescriptors.MergeLocalDeclarations))
{
await MergeLocalDeclarationsRefactoring.ComputeRefactoringsAsync(context, selectedStatements).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringDescriptors.RemoveUnnecessaryAssignment))
{
RemoveUnnecessaryAssignmentRefactoring.ComputeRefactorings(context, selectedStatements);
}
if (context.IsRefactoringEnabled(RefactoringDescriptors.CheckExpressionForNull))
{
await CheckExpressionForNullRefactoring.ComputeRefactoringAsync(context, selectedStatements).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringDescriptors.ConvertWhileToFor))
{
await ConvertWhileToForRefactoring.ComputeRefactoringAsync(context, selectedStatements).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringDescriptors.WrapStatementsInCondition))
{
context.RegisterRefactoring(
WrapInIfStatementRefactoring.Title,
ct => WrapInIfStatementRefactoring.Instance.RefactorAsync(context.Document, selectedStatements, ct),
RefactoringDescriptors.WrapStatementsInCondition);
}
if (context.IsRefactoringEnabled(RefactoringDescriptors.WrapLinesInTryCatch))
{
context.RegisterRefactoring(
WrapLinesInTryCatchRefactoring.Title,
ct => WrapLinesInTryCatchRefactoring.Instance.RefactorAsync(context.Document, selectedStatements, ct),
RefactoringDescriptors.WrapLinesInTryCatch);
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, InvocationExpressionSyntax invocationExpression)
{
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.UseElementAccessInsteadOfEnumerableMethod,
RefactoringIdentifiers.ReplaceAnyWithAllOrAllWithAny,
RefactoringIdentifiers.CallExtensionMethodAsInstanceMethod,
RefactoringIdentifiers.ReplaceStringContainsWithStringIndexOf))
{
ExpressionSyntax expression = invocationExpression.Expression;
if (expression != null &&
invocationExpression.ArgumentList != null)
{
if (expression.IsKind(SyntaxKind.SimpleMemberAccessExpression) &&
((MemberAccessExpressionSyntax)expression).Name?.Span.Contains(context.Span) == true)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.UseElementAccessInsteadOfEnumerableMethod))
{
await UseElementAccessInsteadOfEnumerableMethodRefactoring.ComputeRefactoringsAsync(context, invocationExpression).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceAnyWithAllOrAllWithAny))
{
await ReplaceAnyWithAllOrAllWithAnyRefactoring.ComputeRefactoringAsync(context, invocationExpression).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceStringContainsWithStringIndexOf))
{
await ReplaceStringContainsWithStringIndexOfRefactoring.ComputeRefactoringAsync(context, invocationExpression).ConfigureAwait(false);
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CallExtensionMethodAsInstanceMethod))
{
SyntaxNodeOrToken nodeOrToken = CallExtensionMethodAsInstanceMethodAnalysis.GetNodeOrToken(expression);
if (nodeOrToken.Span.Contains(context.Span))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
CallExtensionMethodAsInstanceMethodAnalysisResult analysis = CallExtensionMethodAsInstanceMethodAnalysis.Analyze(invocationExpression, semanticModel, allowAnyExpression: true, cancellationToken: context.CancellationToken);
if (analysis.Success)
{
context.RegisterRefactoring(
CallExtensionMethodAsInstanceMethodRefactoring.Title,
cancellationToken =>
{
return(context.Document.ReplaceNodeAsync(
analysis.InvocationExpression,
analysis.NewInvocationExpression,
cancellationToken));
});
}
}
}
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceStringFormatWithInterpolatedString) &&
context.SupportsCSharp6)
{
await ReplaceStringFormatWithInterpolatedStringRefactoring.ComputeRefactoringsAsync(context, invocationExpression).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.UseBitwiseOperationInsteadOfCallingHasFlag))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
if (UseBitwiseOperationInsteadOfCallingHasFlagAnalysis.IsFixable(invocationExpression, semanticModel, context.CancellationToken))
{
context.RegisterRefactoring(
UseBitwiseOperationInsteadOfCallingHasFlagRefactoring.Title,
cancellationToken =>
{
return(UseBitwiseOperationInsteadOfCallingHasFlagRefactoring.RefactorAsync(
context.Document,
invocationExpression,
cancellationToken));
});
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.InlineMethod))
{
await InlineMethodRefactoring.ComputeRefactoringsAsync(context, invocationExpression).ConfigureAwait(false);
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, YieldStatementSyntax yieldStatement)
{
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.ChangeMemberTypeAccordingToYieldReturnExpression,
RefactoringIdentifiers.AddCastExpression,
RefactoringIdentifiers.CallToMethod) &&
yieldStatement.IsYieldReturn() &&
yieldStatement.Expression != null)
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
ISymbol memberSymbol = ReturnExpressionRefactoring.GetContainingMethodOrPropertySymbol(yieldStatement.Expression, semanticModel, context.CancellationToken);
if (memberSymbol != null)
{
SyntaxNode node = await memberSymbol
.DeclaringSyntaxReferences[0]
.GetSyntaxAsync(context.CancellationToken)
.ConfigureAwait(false);
var containingMember = node as MemberDeclarationSyntax;
TypeSyntax memberType = ReturnExpressionRefactoring.GetMemberType(containingMember);
if (memberType != null)
{
ITypeSymbol memberTypeSymbol = semanticModel.GetTypeSymbol(memberType, context.CancellationToken);
if (memberTypeSymbol?.SpecialType != SpecialType.System_Collections_IEnumerable)
{
ITypeSymbol typeSymbol = semanticModel.GetTypeSymbol(yieldStatement.Expression, context.CancellationToken);
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeMemberTypeAccordingToYieldReturnExpression) &&
typeSymbol?.IsErrorType() == false &&
!typeSymbol.IsVoid() &&
!memberSymbol.IsOverride &&
(memberTypeSymbol == null ||
memberTypeSymbol.IsErrorType() ||
!memberTypeSymbol.IsConstructedFromIEnumerableOfT() ||
!((INamedTypeSymbol)memberTypeSymbol).TypeArguments[0].Equals(typeSymbol)))
{
INamedTypeSymbol newTypeSymbol = semanticModel
.Compilation
.GetSpecialType(SpecialType.System_Collections_Generic_IEnumerable_T)
.Construct(typeSymbol);
TypeSyntax newType = newTypeSymbol.ToMinimalTypeSyntax(semanticModel, memberType.SpanStart);
context.RegisterRefactoring(
$"Change {ReturnExpressionRefactoring.GetText(containingMember)} type to '{SymbolDisplay.GetMinimalString(newTypeSymbol, semanticModel, memberType.SpanStart)}'",
cancellationToken =>
{
return(ChangeTypeRefactoring.ChangeTypeAsync(
context.Document,
memberType,
newType,
cancellationToken));
});
}
if (context.IsAnyRefactoringEnabled(RefactoringIdentifiers.AddCastExpression, RefactoringIdentifiers.CallToMethod) &&
yieldStatement.Expression.Span.Contains(context.Span) &&
memberTypeSymbol?.IsNamedType() == true)
{
var namedTypeSymbol = (INamedTypeSymbol)memberTypeSymbol;
if (namedTypeSymbol.IsConstructedFromIEnumerableOfT())
{
ITypeSymbol argumentSymbol = namedTypeSymbol.TypeArguments[0];
if (argumentSymbol != typeSymbol)
{
ModifyExpressionRefactoring.ComputeRefactoring(
context,
yieldStatement.Expression,
argumentSymbol,
semanticModel);
}
}
}
}
}
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceStatementWithIfStatement) &&
context.Span.IsBetweenSpans(yieldStatement))
{
var refactoring = new ReplaceYieldStatementWithIfStatementRefactoring();
await refactoring.ComputeRefactoringAsync(context, yieldStatement).ConfigureAwait(false);
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, IfStatementSyntax ifStatement)
{
SyntaxToken ifKeyword = ifStatement.IfKeyword;
bool isTopmostIf = ifStatement.IsTopmostIf();
if (context.Span.IsEmptyAndContainedInSpan(ifKeyword) ||
context.Span.IsBetweenSpans(ifStatement))
{
if (isTopmostIf &&
context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.UseCoalesceExpressionInsteadOfIf,
RefactoringIdentifiers.ConvertIfToConditionalOperator,
RefactoringIdentifiers.SimplifyIf))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
IfAnalysisOptions options = GetIfAnalysisOptions(context);
foreach (IfAnalysis analysis in IfAnalysis.Analyze(ifStatement, options, semanticModel, context.CancellationToken))
{
string refactoringId = GetRefactoringIdentifier(analysis);
if (context.IsRefactoringEnabled(refactoringId))
{
context.RegisterRefactoring(
analysis.Title,
ct => IfRefactoring.RefactorAsync(context.Document, analysis, ct),
refactoringId);
}
}
}
if (context.IsAnyRefactoringEnabled(RefactoringIdentifiers.InvertIf, RefactoringIdentifiers.InvertIfElse) &&
context.Span.IsEmptyAndContainedInSpan(ifKeyword))
{
InvertIfRefactoring.ComputeRefactoring(context, ifStatement);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ConvertIfToSwitch) &&
isTopmostIf)
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
ConvertIfToSwitchRefactoring.ComputeRefactoring(context, ifStatement, semanticModel);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.SplitIfStatement))
{
SplitIfStatementRefactoring.ComputeRefactoring(context, ifStatement);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MergeIfWithParentIf) &&
isTopmostIf &&
context.Span.IsEmptyAndContainedInSpan(ifKeyword))
{
MergeIfWithParentIfRefactoring.ComputeRefactoring(context, ifStatement);
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.InvertIf) &&
context.Span.IsEmptyAndContainedInSpan(ifKeyword))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
ReduceIfNestingAnalysisResult analysis = ReduceIfNestingAnalysis.Analyze(
ifStatement,
semanticModel,
options: ReduceIfNestingOptions.AllowNestedFix
| ReduceIfNestingOptions.AllowIfInsideIfElse
| ReduceIfNestingOptions.AllowLoop
| ReduceIfNestingOptions.AllowSwitchSection,
cancellationToken: context.CancellationToken);
if (analysis.Success)
{
context.RegisterRefactoring(
"Invert if",
ct => ReduceIfNestingRefactoring.RefactorAsync(context.Document, ifStatement, analysis.JumpKind, false, ct),
RefactoringIdentifiers.InvertIf);
if (ReduceIfNestingAnalysis.IsFixableRecursively(ifStatement, analysis.JumpKind))
{
context.RegisterRefactoring(
"Invert if (recursively)",
ct => ReduceIfNestingRefactoring.RefactorAsync(context.Document, ifStatement, analysis.JumpKind, true, ct),
EquivalenceKey.Join(RefactoringIdentifiers.InvertIf, "Recursive"));
}
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.SplitIfElse) &&
context.Span.IsEmptyAndContainedInSpan(ifKeyword))
{
SplitIfElseRefactoring.ComputeRefactoring(context, ifStatement);
}
}
public static void ComputeRefactorings(RefactoringContext context, SwitchStatementSyntax switchStatement)
{
bool fRemoveStatements = context.IsRefactoringEnabled(RefactoringIdentifiers.RemoveStatementsFromSwitchSections);
bool fAddBraces = context.IsRefactoringEnabled(RefactoringIdentifiers.AddBracesToSwitchSections);
bool fRemoveBraces = context.IsRefactoringEnabled(RefactoringIdentifiers.RemoveBracesFromSwitchSections);
if (fRemoveStatements || fAddBraces || fRemoveBraces)
{
SyntaxListSelection <SwitchSectionSyntax> selectedSections;
if (SyntaxListSelection <SwitchSectionSyntax> .TryCreate(switchStatement.Sections, context.Span, out selectedSections))
{
if (fAddBraces || fRemoveBraces)
{
var addBraces = new List <SwitchSectionSyntax>();
var removeBraces = new List <SwitchSectionSyntax>();
foreach (SwitchSectionSyntax section in selectedSections)
{
if (addBraces.Count > 0 &&
removeBraces.Count > 0)
{
break;
}
switch (CSharpAnalysis.AnalyzeBraces(section))
{
case BracesAnalysisResult.AddBraces:
{
addBraces.Add(section);
break;
}
case BracesAnalysisResult.RemoveBraces:
{
removeBraces.Add(section);
break;
}
}
}
if (fAddBraces && addBraces.Count > 0)
{
string title = AddBracesToSwitchSectionRefactoring.Title;
if (addBraces.Count > 1)
{
title += "s";
}
context.RegisterRefactoring(
title,
cancellationToken =>
{
return(AddBracesToSwitchSectionsRefactoring.RefactorAsync(
context.Document,
switchStatement,
addBraces.ToArray(),
cancellationToken));
});
}
if (fRemoveBraces && removeBraces.Count > 0)
{
string title = RemoveBracesFromSwitchSectionRefactoring.Title;
if (removeBraces.Count > 1)
{
title += "s";
}
context.RegisterRefactoring(
title,
cancellationToken =>
{
return(RemoveBracesFromSwitchSectionsRefactoring.RefactorAsync(
context.Document,
switchStatement,
removeBraces.ToArray(),
cancellationToken));
});
}
}
if (fRemoveStatements)
{
string title = "Remove statements from section";
if (selectedSections.Count > 1)
{
title += "s";
}
context.RegisterRefactoring(
title,
cancellationToken =>
{
return(RemoveStatementsFromSwitchSectionsRefactoring.RefactorAsync(
context.Document,
switchStatement,
selectedSections.ToImmutableArray(),
cancellationToken));
});
}
}
}
}
public static bool IsAnyRefactoringEnabled(RefactoringContext context)
{
return(context.IsRefactoringEnabled(RefactoringIdentifiers.WrapInUsingStatement) ||
context.IsRefactoringEnabled(RefactoringIdentifiers.CollapseToInitializer) ||
context.IsRefactoringEnabled(RefactoringIdentifiers.MergeIfStatements) ||
context.IsRefactoringEnabled(RefactoringIdentifiers.MergeLocalDeclarations) ||
context.IsRefactoringEnabled(RefactoringIdentifiers.WrapInCondition) ||
context.IsRefactoringEnabled(RefactoringIdentifiers.WrapInTryCatch) ||
context.IsRefactoringEnabled(RefactoringIdentifiers.UseCoalesceExpressionInsteadOfIf) ||
context.IsRefactoringEnabled(RefactoringIdentifiers.UseConditionalExpressionInsteadOfIf) ||
context.IsRefactoringEnabled(RefactoringIdentifiers.SimplifyIf) ||
context.IsRefactoringEnabled(RefactoringIdentifiers.CheckExpressionForNull) ||
context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceWhileWithFor));
}
public static void ComputeRefactorings(RefactoringContext context, LiteralExpressionSyntax literalExpression)
{
if (!literalExpression.Span.Contains(context.Span))
{
return;
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.InsertStringInterpolation) &&
context.SupportsCSharp6 &&
context.Span.End < literalExpression.Span.End)
{
int startIndex = GetStartIndex(context, literalExpression);
if (startIndex != -1)
{
context.RegisterRefactoring(
"Insert interpolation",
cancellationToken =>
{
return(ReplaceStringLiteralRefactoring.ReplaceWithInterpolatedStringAsync(
context.Document,
literalExpression,
startIndex,
context.Span.Length,
cancellationToken));
});
}
}
if (context.Span.IsBetweenSpans(literalExpression))
{
string text = SyntaxUtility.GetStringLiteralInnerText(literalExpression);
if (literalExpression.IsVerbatimStringLiteral())
{
if (text.Contains("\"\""))
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceVerbatimStringLiteralWithRegularStringLiteral))
{
context.RegisterRefactoring(
"Replace verbatim string literal with regular string literal",
cancellationToken =>
{
return(ReplaceStringLiteralRefactoring.ReplaceWithRegularStringLiteralAsync(
context.Document,
literalExpression,
cancellationToken));
});
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceVerbatimStringLiteralWithRegularStringLiterals) &&
text.Contains("\n"))
{
context.RegisterRefactoring(
"Replace verbatim string literal with regular string literals",
cancellationToken =>
{
return(ReplaceStringLiteralRefactoring.ReplaceWithRegularStringLiteralsAsync(
context.Document,
literalExpression,
cancellationToken));
});
}
}
}
else if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceRegularStringLiteralWithVerbatimStringLiteral) &&
text.Contains(@"\"))
{
context.RegisterRefactoring(
"Replace regular string literal with verbatim string literal",
cancellationToken =>
{
return(ReplaceStringLiteralRefactoring.ReplaceWithVerbatimStringLiteralAsync(
context.Document,
literalExpression,
cancellationToken));
});
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceEmptyStringLiteralWithStringEmpty) &&
ReplaceStringLiteralRefactoring.CanReplaceWithStringEmpty(literalExpression))
{
context.RegisterRefactoring(
"Replace \"\" with 'string.Empty'",
cancellationToken =>
{
return(ReplaceStringLiteralRefactoring.ReplaceWithStringEmptyAsync(
context.Document,
literalExpression,
cancellationToken));
});
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceStringLiteralWithCharacterLiteral) &&
ReplaceStringLiteralRefactoring.CanReplaceWithCharacterLiteral(literalExpression))
{
context.RegisterRefactoring(
"Replace string literal with character literal",
cancellationToken =>
{
return(ReplaceStringLiteralRefactoring.ReplaceWithCharacterLiteralAsync(
context.Document,
literalExpression,
cancellationToken));
});
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, ExpressionSyntax expression)
{
if (expression != null &&
context.SupportsSemanticModel)
{
MemberDeclarationSyntax declaration = GetContainingMethodOrPropertyOrIndexer(expression);
if (declaration != null)
{
TypeSyntax memberType = GetMemberType(declaration);
if (memberType != null)
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
ITypeSymbol memberTypeSymbol = semanticModel
.GetTypeInfo(memberType, context.CancellationToken)
.Type;
if (memberTypeSymbol != null)
{
ITypeSymbol expressionSymbol = semanticModel
.GetTypeInfo(expression, context.CancellationToken)
.Type;
if (expressionSymbol?.IsErrorType() == false)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddBooleanComparison) &&
memberTypeSymbol.IsBoolean() &&
expressionSymbol.IsNamedType())
{
var namedTypeSymbol = (INamedTypeSymbol)expressionSymbol;
if (namedTypeSymbol?.IsNullableOf(SpecialType.System_Boolean) == true)
{
AddBooleanComparisonRefactoring.RegisterRefactoring(context, expression);
}
}
ISymbol memberSymbol = semanticModel.GetDeclaredSymbol(declaration, context.CancellationToken);
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeMemberTypeAccordingToReturnExpression))
{
ITypeSymbol newType = GetMemberNewType(memberSymbol, memberTypeSymbol, expression, expressionSymbol, semanticModel, context.CancellationToken);
if (newType?.IsErrorType() == false &&
!memberTypeSymbol.Equals(newType))
{
if (newType.IsNamedType() && memberTypeSymbol.IsNamedType())
{
var newNamedType = (INamedTypeSymbol)newType;
INamedTypeSymbol orderedEnumerableSymbol = semanticModel.Compilation.GetTypeByMetadataName("System.Linq.IOrderedEnumerable`1");
if (newNamedType.ConstructedFrom == orderedEnumerableSymbol)
{
INamedTypeSymbol enumerableSymbol = semanticModel.Compilation.GetTypeByMetadataName("System.Collections.Generic.IEnumerable`1");
if (enumerableSymbol != null &&
((INamedTypeSymbol)memberTypeSymbol).ConstructedFrom != enumerableSymbol)
{
RegisterChangeType(context, declaration, memberType, enumerableSymbol.Construct(newNamedType.TypeArguments.ToArray()));
}
}
}
RegisterChangeType(context, declaration, memberType, newType);
}
}
if (context.IsAnyRefactoringEnabled(RefactoringIdentifiers.AddCastExpression, RefactoringIdentifiers.CallToMethod) &&
!memberTypeSymbol.IsErrorType())
{
ITypeSymbol castTypeSymbol = GetCastTypeSymbol(memberSymbol, memberTypeSymbol, expressionSymbol, semanticModel);
if (castTypeSymbol != null)
{
ModifyExpressionRefactoring.ComputeRefactoring(
context,
expression,
castTypeSymbol,
semanticModel);
}
}
}
}
}
}
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, LiteralExpressionSyntax literalExpression)
{
StringLiteralExpressionInfo info = SyntaxInfo.StringLiteralExpressionInfo(literalExpression);
Debug.Assert(info.Success);
if (!info.Success)
{
return;
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.InsertStringInterpolation) &&
context.SupportsCSharp6 &&
context.Span.End < literalExpression.Span.End)
{
int startIndex = GetStartIndex(info, context.Span);
if (startIndex != -1)
{
context.RegisterRefactoring(
"Insert interpolation",
cancellationToken =>
{
return(ReplaceWithInterpolatedStringAsync(
context.Document,
literalExpression,
startIndex,
context.Span.Length,
addNameOf: false,
cancellationToken: cancellationToken));
});
if (!context.Span.IsEmpty)
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
string name = StringLiteralParser.Parse(literalExpression.Token.Text, startIndex, context.Span.Length, info.IsVerbatim, isInterpolatedText: false);
foreach (ISymbol symbol in semanticModel.LookupSymbols(literalExpression.SpanStart))
{
if (string.Equals(name, symbol.MetadataName, StringComparison.Ordinal))
{
context.RegisterRefactoring(
"Insert interpolation with nameof",
cancellationToken =>
{
return(ReplaceWithInterpolatedStringAsync(
context.Document,
literalExpression,
startIndex,
context.Span.Length,
addNameOf: true,
cancellationToken: cancellationToken));
});
break;
}
}
}
}
}
if (context.Span.IsBetweenSpans(literalExpression))
{
if (info.IsVerbatim)
{
if (info.ContainsEscapeSequence)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceVerbatimStringLiteralWithRegularStringLiteral))
{
context.RegisterRefactoring(
"Replace verbatim string literal with regular string literal",
ct => ReplaceWithRegularStringLiteralAsync(context.Document, literalExpression, ct));
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceVerbatimStringLiteralWithRegularStringLiterals) &&
info.ContainsLinefeed)
{
context.RegisterRefactoring(
"Replace verbatim string literal with regular string literals",
ct => ReplaceWithRegularStringLiteralsAsync(context.Document, literalExpression, ct));
}
}
}
else if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceRegularStringLiteralWithVerbatimStringLiteral) &&
info.ContainsEscapeSequence)
{
context.RegisterRefactoring(
"Replace regular string literal with verbatim string literal",
ct => ReplaceWithVerbatimStringLiteralAsync(context.Document, literalExpression, ct));
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.UseStringEmptyInsteadOfEmptyStringLiteral) &&
CanReplaceWithStringEmpty(literalExpression))
{
context.RegisterRefactoring(
"Replace \"\" with 'string.Empty'",
ct => ReplaceWithStringEmptyAsync(context.Document, literalExpression, ct));
}
}