public Unary(Token tok, Expr x) : base(tok, null)
{
expr = x;
type = BasicType.max(BasicType.Int, expr.type);
if (type == null)
{
error("type error");
}
}
public Arith(Token tok, Expr x1, Expr x2) : base(tok, null)
{
expr1 = x1;
expr2 = x2;
type = BasicType.max(expr1.type, expr2.type);
if (type == null)
{
error("type error");
}
}
