void Factor(out Expression e)
{
string name; Expression e1; e = null; ListExpr list = new List <Expression>();
if (la.kind == 1)
{
Ident(out name);
e = new Variable(name);
if (la.kind == 3)
{
Get();
FormalExpr(out list);
Expect(4);
e = new FunctionCall(name, list);
}
}
else if (la.kind == 2)
{
Get();
e = new Constant(Convert.ToInt32(t.val),
Type.IntegerType);
}
else if (la.kind == 25)
{
Get();
Factor(out e1);
e = new UnaryOperation(Operator.Neg, e1);
}
else if (la.kind == 3)
{
Get();
Expr(out e1);
Expect(4);
e = e1;
}
else
{
SynErr(35);
}
}
void Factor(out Expression e)
{
string name; Expression e1; e = null;
if (la.kind == 1) {
Ident(out name);
e = new Variable(name);
if (la.kind == 3) {
Get();
Expr(out e1);
Expect(4);
e = new FunctionCall(name, e1);
}
} else if (la.kind == 2) {
Get();
e = new Constant(int.Parse(t.val), Type.IntegerType);
} else if (la.kind == 18) {
Get();
Factor(out e1);
e = new UnaryOperation(Operator.Neg, e1);
} else if (la.kind == 3) {
Get();
Expr(out e1);
Expect(4);
e = e1;
} else SynErr(25);
}