public void AddNum(string n)
{
var tmp = new Num(Convert.ToDouble(n));
this.AddNum(tmp);
}
//得到Op对象
private INode GetOp(string op, INode a, INode b)
{
if (b == null)
b = new Num(0);
switch (op)
{
case Arithmetic.PLUS:
return new Plus_Op(a, b);
case Arithmetic.SUB:
return new Sub_Op(a, b);
case Arithmetic.MULTI:
return new Multi_Op(a, b);
case Arithmetic.DIV:
return new Div_Op(a, b);
default:
return null;
}
}
public void AddNum(string n)
{
var tmp = new Num(Convert.ToDouble(n));
this.AddNum(tmp);
}