public override string ToString()
{
string res;
if (Prefix.CompareTo(Constant.MinusOne))
{
res = "-" + Identifier.ToString();
}
else if (!Prefix.CompareTo(Constant.One))
{
res = Prefix.ToString() + Identifier.ToString();
}
else
{
res = Identifier.ToString();
}
if (!Exponent.CompareTo(Constant.One))
{
res += "^" + Exponent.ToString();
}
return(res);
}
public override bool CompareTo(Expression other)
{
var otherReduced = other.Reduce();
if (otherReduced is Variable)
{
if (Identifier == (otherReduced as Variable).Identifier && Prefix.CompareTo((otherReduced as Variable).Prefix) && Exponent.CompareTo((otherReduced as Variable).Exponent))
{
return(true);
}
if (IsDefined && (otherReduced as Variable).IsDefined)
{
return(Value.CompareTo(otherReduced.Value));
}
}
if (IsDefined)
{
return(otherReduced.CompareTo(Value));
}
return(false);
}