/// <summary>
/// Returns the string representation of the expression.
/// </summary>
/// <returns>Returns the string representation of the expression.</returns>
public override string ToString()
{
var sb = new StringBuilder();
if (Operand1.IsAtomOrPrimitive())
{
sb.Append(Operand1);
}
else
{
sb.Append("(").Append(Operand1.ToString()).Append(")");
}
sb.Append(" ").Append(Operator1).Append(" ");
if (Operand2.IsAtomOrPrimitive())
{
sb.Append(Operand2);
}
else
{
sb.Append("(").Append(Operand2.ToString()).Append(")");
}
sb.Append(" ").Append(Operator2).Append(" ");
if (Operand3.IsAtomOrPrimitive())
{
sb.Append(Operand3);
}
else
{
sb.Append("(").Append(Operand3.ToString()).Append(")");
}
return(sb.ToString());
}