public override Node Eval(Parser p)
{
lhs.Eval(p);
rhs.Eval(p);
value = Check(op, lhs.GetValue(p), rhs.GetValue(p));
return(this);
}
public override Node Eval(Parser p)
{
try
{
child.Eval(p);
value = -child.GetValue(p);
return(this);
}
finally
{
this.Epilog();
}
}