private static RegisterFixData <TArgumentSyntax> TryGetObjectCreationFixInfo(
SemanticModel semanticModel,
ISyntaxFactsService syntaxFacts,
SyntaxNode node,
CancellationToken cancellationToken)
{
if (node is TObjectCreationExpressionSyntax objectCreation)
{
// Not supported if this is "new { ... }" (as there are no parameters at all.
var typeNode = syntaxFacts.GetObjectCreationType(objectCreation);
if (typeNode == null)
{
return(new RegisterFixData <TArgumentSyntax>());
}
// If we can't figure out the type being created, or the type isn't in source,
// then there's nothing we can do.
if (!(semanticModel.GetSymbolInfo(typeNode, cancellationToken).GetAnySymbol() is INamedTypeSymbol type))
{
return(new RegisterFixData <TArgumentSyntax>());
}
if (!type.IsNonImplicitAndFromSource())
{
return(new RegisterFixData <TArgumentSyntax>());
}
var arguments = (SeparatedSyntaxList <TArgumentSyntax>)syntaxFacts.GetArgumentsOfObjectCreationExpression(objectCreation);
var methodCandidates = type.InstanceConstructors;
return(new RegisterFixData <TArgumentSyntax>(arguments, methodCandidates, isConstructorInitializer: false));
}
return(null);
}