/// <summary>
/// Lifts the expression represented by <paramref name="argument" />, if necessary.
/// </summary>
public override SyntaxNode VisitArgument(ArgumentSyntax argument)
{
if (!_liftedMethodStack.Peek())
{
return(base.VisitArgument(argument));
}
var requiresLifting = argument.HasAttribute <LiftExpressionAttribute>(SemanticModel);
argument = (ArgumentSyntax)base.VisitArgument(argument);
if (!requiresLifting)
{
return(argument);
}
var lambda = Syntax.ValueReturningLambdaExpression(Enumerable.Empty <ParameterSyntax>(), argument.Expression).WithTrivia(argument);
return(argument.WithExpression((ExpressionSyntax)lambda));
}
