private static void CallToString(RefactoringContext context, ExpressionSyntax expression, ITypeSymbol destinationType)
{
if (!(expression is LiteralExpressionSyntax))
{
CallToMethodRefactoring.ComputeRefactoring(context, expression, destinationType, "ToString");
}
}
public static void ComputeRefactoring(
RefactoringContext context,
ExpressionSyntax expression,
ITypeSymbol destinationType,
SemanticModel semanticModel)
{
if (semanticModel.IsExplicitConversion(expression, destinationType))
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CallToMethod))
{
AddToMethodInvocation(context, expression, destinationType, semanticModel);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddCastExpression))
{
AddCastExpressionRefactoring.RegisterRefactoring(context, expression, destinationType);
}
}
else if (destinationType.IsString())
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CallToMethod))
{
CallToMethodRefactoring.ComputeRefactoring(context, expression, destinationType, "ToString");
}
}
}
public static void ComputeRefactoring(
RefactoringContext context,
ExpressionSyntax expression,
IEnumerable <ITypeSymbol> destinationTypes,
SemanticModel semanticModel)
{
ITypeSymbol[] convertibleDestinationTypes = destinationTypes
.Where(destinationType => semanticModel.IsExplicitConversion(expression, destinationType))
.ToArray();
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CallToMethod))
{
bool fString = false;
foreach (ITypeSymbol destinationType in convertibleDestinationTypes)
{
if (AddToMethodInvocation(context, expression, destinationType, semanticModel))
{
if (destinationType.IsString())
{
fString = true;
}
break;
}
}
if (!fString)
{
ITypeSymbol stringType = destinationTypes.FirstOrDefault(f => f.IsString());
if (stringType != null)
{
CallToMethodRefactoring.ComputeRefactoring(context, expression, stringType, "ToString");
}
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddCastExpression))
{
foreach (ITypeSymbol destinationType in convertibleDestinationTypes)
{
AddCastExpressionRefactoring.RegisterRefactoring(context, expression, destinationType);
}
}
}
private static void CallToList(
RefactoringContext context,
ExpressionSyntax expression,
INamedTypeSymbol destinationType,
SemanticModel semanticModel)
{
if (!destinationType.OriginalDefinition.HasMetadataName(MetadataNames.System_Collections_Generic_List_T))
{
return;
}
INamedTypeSymbol enumerable = semanticModel.GetTypeByMetadataName("System.Linq.Enumerable");
if (enumerable != null)
{
CallToMethodRefactoring.ComputeRefactoring(context, expression, enumerable, "ToList");
}
}
private static void CallToList(
RefactoringContext context,
ExpressionSyntax expression,
INamedTypeSymbol destinationType,
SemanticModel semanticModel)
{
INamedTypeSymbol list = semanticModel.GetTypeByMetadataName(MetadataNames.System_Collections_Generic_List_T);
if (list != null && destinationType.ConstructedFrom == list)
{
INamedTypeSymbol enumerable = semanticModel.GetTypeByMetadataName(MetadataNames.System_Linq_Enumerable);
if (enumerable != null)
{
CallToMethodRefactoring.ComputeRefactoring(context, expression, enumerable, "ToList");
}
}
}
private static void CallToArray(
RefactoringContext context,
ExpressionSyntax expression,
SemanticModel semanticModel)
{
ITypeSymbol expressionType = semanticModel.GetTypeSymbol(expression, context.CancellationToken);
if (expressionType?.IsNamedType() == true)
{
INamedTypeSymbol constructedFrom = ((INamedTypeSymbol)expressionType).ConstructedFrom;
if (constructedFrom.SpecialType == SpecialType.System_Collections_Generic_IEnumerable_T ||
constructedFrom.Implements(SpecialType.System_Collections_Generic_IEnumerable_T))
{
INamedTypeSymbol enumerable = semanticModel.GetTypeByMetadataName(MetadataNames.System_Linq_Enumerable);
if (enumerable != null)
{
CallToMethodRefactoring.ComputeRefactoring(context, expression, enumerable, "ToArray");
}
}
}
}
private static void CallToArray(
RefactoringContext context,
ExpressionSyntax expression,
SemanticModel semanticModel)
{
if (!(semanticModel.GetTypeSymbol(expression, context.CancellationToken) is INamedTypeSymbol typeSymbol))
{
return;
}
INamedTypeSymbol constructedFrom = typeSymbol.ConstructedFrom;
if (!constructedFrom.IsOrImplements(SpecialType.System_Collections_Generic_IEnumerable_T, allInterfaces: true))
{
return;
}
INamedTypeSymbol enumerable = semanticModel.GetTypeByMetadataName("System.Linq.Enumerable");
if (enumerable != null)
{
CallToMethodRefactoring.ComputeRefactoring(context, expression, enumerable, "ToArray");
}
}
private static bool AddToMethodInvocation(
RefactoringContext context,
ExpressionSyntax expression,
ITypeSymbol destinationType,
SemanticModel semanticModel)
{
if (destinationType.IsString())
{
CallToMethodRefactoring.ComputeRefactoring(context, expression, destinationType, "ToString");
return(true);
}
else if (destinationType.IsArrayType())
{
AddToArray(context, expression, (IArrayTypeSymbol)destinationType, semanticModel);
return(true);
}
else if (destinationType.IsNamedType())
{
AddToList(context, expression, (INamedTypeSymbol)destinationType, semanticModel);
return(true);
}
return(false);
}
