/// <summary>
/// Visit each VariableUse in isset variable list.
/// </summary>
/// <param name="x"></param>
virtual public void VisitIssetEx(IssetEx x)
{
foreach (VariableUse v in x.VarList)
{
VisitElement(v);
}
}
BoundExpression BindIsSet(AST.IssetEx x)
{
return(new BoundIsSetEx(x.VarList.Select(v => (BoundReferenceExpression)BindExpression(v, BoundAccess.Read.WithQuiet())).ToImmutableArray()));
}