public override void VisitIdentifier(Identifier n)
{
if (_mgr.HasSymbol(n.Id))
{
var d = _mgr.GetType(n.Id);
n.Descriptor = d;
n.InternalType = d.Type;
_lastSeenType = d.Type;
}
else
{
ReportError(n.Location, "Identifier '{0}' has not been declared.", n.Id);
}
}