protected override bool IsViableExtensionMethod(IMethodSymbol method, SyntaxNode expression, SemanticModel semanticModel, CancellationToken cancellationToken)
{
var leftExpression = expression.GetExpressionOfMemberAccessExpression() ?? expression.GetExpressionOfConditionalMemberAccessExpression();
if (leftExpression == null)
{
if (expression.IsKind(SyntaxKind.CollectionInitializerExpression))
{
leftExpression = expression.GetAncestor<ObjectCreationExpressionSyntax>();
}
else
{
return false;
}
}
var semanticInfo = semanticModel.GetTypeInfo(leftExpression, cancellationToken);
var leftExpressionType = semanticInfo.Type;
return leftExpressionType != null && method.ReduceExtensionMethod(leftExpressionType) != null;
}
