internal static async Task ChangeTypeAsync(
RefactoringContext context,
ForEachStatementSyntax forEachStatement)
{
TypeSyntax type = forEachStatement.Type;
if (type?.Span.Contains(context.Span) != true)
{
return;
}
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
TypeAnalysis analysis = CSharpTypeAnalysis.AnalyzeType(forEachStatement, semanticModel);
if (analysis.IsExplicit)
{
if (analysis.SupportsImplicit &&
context.IsRefactoringEnabled(RefactoringDescriptors.UseImplicitType))
{
context.RegisterRefactoring(CodeActionFactory.ChangeTypeToVar(context.Document, type, equivalenceKey: EquivalenceKey.Create(RefactoringDescriptors.UseImplicitType)));
}
if (!forEachStatement.ContainsDiagnostics &&
context.IsRefactoringEnabled(RefactoringDescriptors.ChangeTypeAccordingToExpression))
{
ChangeTypeAccordingToExpression(context, forEachStatement, semanticModel);
}
}
else if (analysis.SupportsExplicit &&
context.IsRefactoringEnabled(RefactoringDescriptors.UseExplicitType))
{
context.RegisterRefactoring(CodeActionFactory.UseExplicitType(context.Document, type, analysis.Symbol, semanticModel, equivalenceKey: EquivalenceKey.Create(RefactoringDescriptors.UseExplicitType)));
}
}
private static async Task ChangeTypeAsync(
RefactoringContext context,
VariableDeclarationSyntax variableDeclaration)
{
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(
"Change type to 'var'",
cancellationToken =>
{
return(ChangeTypeRefactoring.ChangeTypeToVarAsync(
context.Document,
variableDeclaration.Type,
cancellationToken));
},
RefactoringIdentifiers.ChangeExplicitTypeToVar);
}
}
else if (analysis.SupportsExplicit &&
context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeVarToExplicitType))
{
ITypeSymbol typeSymbol = semanticModel.GetTypeSymbol(variableDeclaration.Type, context.CancellationToken);
ChangeType(context, variableDeclaration, typeSymbol, semanticModel, context.CancellationToken);
}
}
public static async Task ComputeRefactoringsAsync(
RefactoringContext context,
DeclarationExpressionSyntax declarationExpression)
{
if (declarationExpression.Type?.Span.Contains(context.Span) == true &&
context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.ChangeExplicitTypeToVar,
RefactoringIdentifiers.ChangeVarToExplicitType))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
TypeAnalysis analysis = CSharpTypeAnalysis.AnalyzeType(declarationExpression, semanticModel, context.CancellationToken);
if (analysis.IsExplicit)
{
if (analysis.SupportsImplicit &&
context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeExplicitTypeToVar))
{
context.RegisterRefactoring(CodeActionFactory.ChangeTypeToVar(context.Document, declarationExpression.Type, equivalenceKey: RefactoringIdentifiers.ChangeExplicitTypeToVar));
}
}
else if (analysis.SupportsExplicit &&
context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeVarToExplicitType))
{
TypeSyntax type = declarationExpression.Type;
var localSymbol = (ILocalSymbol)semanticModel.GetDeclaredSymbol(declarationExpression.Designation, context.CancellationToken);
ITypeSymbol typeSymbol = localSymbol.Type;
context.RegisterRefactoring(CodeActionFactory.ChangeType(context.Document, type, typeSymbol, semanticModel, equivalenceKey: RefactoringIdentifiers.ChangeVarToExplicitType));
}
}
}
private static void AnalyzeForEachStatement(SyntaxNodeAnalysisContext context)
{
var forEachStatement = (ForEachStatementSyntax)context.Node;
TypeAnalysis analysis = CSharpTypeAnalysis.AnalyzeType(forEachStatement, context.SemanticModel);
if (analysis.IsExplicit &&
analysis.SupportsImplicit)
{
DiagnosticHelpers.ReportDiagnostic(context, DiagnosticDescriptors.UseVarInsteadOfExplicitTypeInForEach, forEachStatement.Type);
}
}
private static void AnalyzeForEachVariableStatement(SyntaxNodeAnalysisContext context)
{
var forEachStatement = (ForEachVariableStatementSyntax)context.Node;
TypeAnalysis analysis = CSharpTypeAnalysis.AnalyzeType(forEachStatement, context.SemanticModel);
if (analysis.IsExplicit &&
analysis.SupportsImplicit)
{
ReportDiagnostic(context, forEachStatement.Variable);
}
}
public static async Task ComputeRefactoringsAsync(
RefactoringContext context,
DeclarationExpressionSyntax declarationExpression)
{
if (declarationExpression.Type?.Span.Contains(context.Span) == true &&
context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.ChangeExplicitTypeToVar,
RefactoringIdentifiers.ChangeVarToExplicitType))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
TypeAnalysis analysis = CSharpTypeAnalysis.AnalyzeType(declarationExpression, semanticModel, context.CancellationToken);
if (analysis.IsExplicit)
{
if (analysis.SupportsImplicit &&
context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeExplicitTypeToVar))
{
context.RegisterRefactoring(
"Change type to 'var'",
cancellationToken =>
{
return(ChangeTypeRefactoring.ChangeTypeToVarAsync(
context.Document,
declarationExpression.Type,
cancellationToken));
},
RefactoringIdentifiers.ChangeExplicitTypeToVar);
}
}
else if (analysis.SupportsExplicit &&
context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeVarToExplicitType))
{
TypeSyntax type = declarationExpression.Type;
var localSymbol = semanticModel.GetDeclaredSymbol(declarationExpression.Designation, context.CancellationToken) as ILocalSymbol;
ITypeSymbol typeSymbol = localSymbol.Type;
context.RegisterRefactoring(
$"Change type to '{SymbolDisplay.ToMinimalDisplayString(typeSymbol, semanticModel, type.SpanStart, SymbolDisplayFormats.Default)}'",
cancellationToken => ChangeTypeRefactoring.ChangeTypeAsync(context.Document, type, typeSymbol, cancellationToken),
RefactoringIdentifiers.ChangeVarToExplicitType);
}
}
}
internal static async Task ChangeTypeAsync(
RefactoringContext context,
ForEachStatementSyntax forEachStatement)
{
TypeSyntax type = forEachStatement.Type;
if (type?.Span.Contains(context.Span) != true)
{
return;
}
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
TypeAnalysis analysis = CSharpTypeAnalysis.AnalyzeType(forEachStatement, semanticModel);
if (analysis.IsExplicit)
{
if (analysis.SupportsImplicit &&
context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeExplicitTypeToVar))
{
context.RegisterRefactoring(
"Change type to 'var'",
cancellationToken => ChangeTypeRefactoring.ChangeTypeToVarAsync(context.Document, type, cancellationToken),
RefactoringIdentifiers.ChangeExplicitTypeToVar);
}
}
else if (analysis.SupportsExplicit &&
context.IsRefactoringEnabled(RefactoringIdentifiers.ChangeVarToExplicitType))
{
ITypeSymbol typeSymbol = semanticModel.GetTypeSymbol(type, context.CancellationToken);
context.RegisterRefactoring(
$"Change type to '{SymbolDisplay.ToMinimalDisplayString(typeSymbol, semanticModel, type.SpanStart, SymbolDisplayFormats.Default)}'",
cancellationToken => ChangeTypeRefactoring.ChangeTypeAsync(context.Document, type, typeSymbol, cancellationToken),
RefactoringIdentifiers.ChangeVarToExplicitType);
}
}
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 = analysis.Symbol;
VariableDeclaratorSyntax variableDeclarator = variableDeclaration.Variables.SingleOrDefault(shouldThrow: false);
if (variableDeclarator?.Initializer?.Value != null)
{
if (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"));
}
}
typeSymbol = semanticModel.GetTypeSymbol(variableDeclarator.Initializer.Value, context.CancellationToken);
if (typeSymbol != null)
{
context.RegisterRefactoring(CodeActionFactory.ChangeType(context.Document, type, typeSymbol, semanticModel, equivalenceKey: RefactoringIdentifiers.ChangeVarToExplicitType));
}
}
}
}
}
