public override PrimitiveExpression Simplified(Grimoire grimoire, CalcTimer timer)
{
timer.ThrowIfTimedOut();
PrimitiveExpression primOperand = Operand.Simplified(grimoire, timer);
try
{
switch (Operation)
{
case Operation.Negate:
if (primOperand.Type == PrimitiveType.IntegerLong)
{
return(new PrimitiveExpression(Index, Length, -primOperand.LongValue));
}
else if (primOperand.Type == PrimitiveType.IntegerBig)
{
return(new PrimitiveExpression(Index, Length, -primOperand.BigIntegerValue));
}
else if (primOperand.Type == PrimitiveType.Decimal)
{
return(new PrimitiveExpression(Index, Length, -primOperand.DecimalValue));
}
break;
case Operation.Factorial:
if (primOperand.Type == PrimitiveType.IntegerLong)
{
return(new PrimitiveExpression(Index, Length, MathFuncs.Factorial(primOperand.LongValue, timer)));
}
else if (primOperand.Type == PrimitiveType.IntegerBig)
{
return(new PrimitiveExpression(Index, Length, MathFuncs.Factorial(primOperand.BigIntegerValue, timer)));
}
else if (primOperand.Type == PrimitiveType.Decimal)
{
throw new FunctionDomainException("Factorials are not defined on fractional numbers.");
}
break;
default:
break;
}
}
catch (OverflowException ex)
{
throw new SimplificationException(this, ex);
}
catch (DivideByZeroException ex)
{
throw new SimplificationException(this, ex);
}
catch (FunctionDomainException ex)
{
throw new SimplificationException(this, ex);
}
catch (TimeoutException ex)
{
throw new SimplificationException(this, ex);
}
throw new SimplificationException($"Cannot handle unary operator {Operation}.", this);
}
