// *** partial implementation, will be fixed in proj2 ****
// Call ---
// Exp obj;
// Id cid, mid;
// ExpList args;
public IrExp visit(AstCall n)
{
string label;
// An Important Detail: The TypeVisitor program has its own copy of
// currClass and currMethod. These two variables need to be set to the
// current environment before typechecking can work. Do the following:
tv.setClass(currClass);
tv.setMethod(currMethod);
// 1. Perform typechecking on the obj component of the Call/CallStmt
// node, which should return an ObjType representing the obj's class.
AstObjType t = (AstObjType)n.obj.accept(tv);
// 2. Look up the MethodRec with the class info.
ClassRec classRec = symTable.GetClass(t.cid);
MethodRec methodRec = symTable.GetMethod(classRec, n.mid);
IrExp accessLink = n.obj.accept(this);
IrExpList el = new IrExpList(accessLink);
el.addAll(n.args.accept(this));
if (maxArgCnt <= n.args.Count())
maxArgCnt = n.args.Count() + 1;
if (methodRec.Id().s.CompareTo("main") == 0)
label = "main";
else
label = symTable.UniqueMethodName(classRec, methodRec.Id());
return new IrCall(new IrName(label), el);
}
