void IDENTIFIER(out AST e)
{
e = null; List <AST> elist = new List <AST>(); AST ei = null;
Expect(3);
string id = t.val; e = new SymReferencing(id);
if (la.kind == 25 || la.kind == 26)
{
if (la.kind == 25)
{
Get();
IDENTIFIER(out ei);
e = new DotReferencing(e, ei);
}
else
{
Get();
EXPR(out ei);
Expect(27);
elist.Add(ei);
while (la.kind == 26)
{
Get();
EXPR(out ei);
Expect(27);
elist.Add(ei);
}
e = new ListReferencing(e, elist);
if (la.kind == 25)
{
Get();
IDENTIFIER(out ei);
e = new DotReferencing(e, ei);
}
}
}
}
public abstract void Visit(ListReferencing n);