public static async Task ComputeRefactoringsAsync(RefactoringContext context, ExpressionSyntax expression)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddBooleanComparison))
{
await AddBooleanComparisonRefactoring.ComputeRefactoringAsync(context, expression).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ExtractExpressionFromCondition) &&
context.Span.IsBetweenSpans(expression))
{
ExtractConditionRefactoring.ComputeRefactoring(context, expression);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ParenthesizeExpression) &&
context.Span.IsBetweenSpans(expression) &&
ParenthesizeExpressionRefactoring.CanRefactor(context, expression))
{
context.RegisterRefactoring(
$"Parenthesize '{expression}'",
cancellationToken => ParenthesizeExpressionRefactoring.RefactorAsync(context.Document, expression, cancellationToken));
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceNullLiteralExpressionWithDefaultExpression))
{
await ReplaceNullLiteralExpressionWithDefaultExpressionRefactoring.ComputeRefactoringAsync(context, expression).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceConditionalExpressionWithExpression))
{
ReplaceConditionalExpressionWithExpressionRefactoring.ComputeRefactoring(context, expression);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CheckExpressionForNull) &&
context.Span.IsContainedInSpanOrBetweenSpans(expression))
{
await CheckExpressionForNullRefactoring.ComputeRefactoringAsync(context, expression).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceExpressionWithConstantValue) &&
context.Span.IsBetweenSpans(expression))
{
await ReplaceExpressionWithConstantValueRefactoring.ComputeRefactoringAsync(context, expression).ConfigureAwait(false);
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, WhileStatementSyntax whileStatement)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddBooleanComparison) &&
whileStatement.Condition != null &&
whileStatement.Condition.Span.Contains(context.Span) &&
context.SupportsSemanticModel)
{
await AddBooleanComparisonRefactoring.ComputeRefactoringAsync(context, whileStatement.Condition).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceWhileStatementWithDoStatement) &&
(whileStatement.WhileKeyword.Span.Contains(context.Span)))
{
context.RegisterRefactoring(
"Replace while with do",
cancellationToken =>
{
return(ReplaceWhileStatementWithDoStatementRefactoring.RefactorAsync(
context.Document,
whileStatement,
cancellationToken));
});
}
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, IfStatementSyntax ifStatement)
{
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.SwapStatementsInIfElse,
RefactoringIdentifiers.ReplaceIfElseWithConditionalExpression) &&
IfElseAnalysis.IsTopmostIf(ifStatement) &&
context.Span.IsBetweenSpans(ifStatement))
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.ReplaceIfElseWithConditionalExpression))
{
ReplaceIfElseWithConditionalExpressionRefactoring.ComputeRefactoring(context, ifStatement);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.SwapStatementsInIfElse) &&
SwapStatementInIfElseRefactoring.CanRefactor(ifStatement))
{
context.RegisterRefactoring(
"Swap statements in if-else",
cancellationToken =>
{
return(SwapStatementInIfElseRefactoring.RefactorAsync(
context.Document,
ifStatement,
cancellationToken));
});
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddBooleanComparison) &&
ifStatement.Condition != null &&
ifStatement.Condition.Span.Contains(context.Span) &&
context.SupportsSemanticModel)
{
await AddBooleanComparisonRefactoring.ComputeRefactoringAsync(context, ifStatement.Condition).ConfigureAwait(false);
}
}
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, 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);
}
}