//It converts string expression into Operand object
//It calculates power associated with the number like 2^2 will be converted into 4.
private void ConvertToNaturalNumber(string operandToConvert)
{
bool isNegative = operandToConvert.ElementAt(0).Equals(Operator.MINUS);
int numberPart = OperandConverter.GetNumberPartFromNaturalNumber(operandToConvert, (isNegative) ? 1 : 0);
int powerPart = OperandConverter.GetPowerFrom(operandToConvert);
this.NaturalNumber = OperandConverter.GetPoweredNumber(numberPart, powerPart, isNegative);
}
//It converts parenthesis into Term object that will holding a number of Operands.
//In the case of (x+1)^0, it will treat it as "1".
private void ConvertFromParenthesis(string parenthesis)
{
int power = OperandConverter.GetPowerFromParenthesis(parenthesis);
bool isNegative = parenthesis.ElementAt(0) == Operator.MINUS;
if (power == 0)
{
this.operands = GetDefaultOperand(isNegative);
}
else
{
this.operands = GetCalculatedParenthesis(parenthesis, power, isNegative);
}
}
//It calculates the euqation in the parenthesis provided.
//In the case of (x+2)^n, it will multiply (x+2) n times.
private List <Operand> GetCalculatedParenthesis(string parenthesis, int power, bool isNegative)
{
string equationInParenthesis = OperandConverter.GetEquationInParenthesis(parenthesis);
List <Operand> calculatedParenthesis = new TermCalculator().GetCalculatedEquation(equationInParenthesis);
List <Operand> finalParenthesis = calculatedParenthesis;
for (int i = 1; i < power; i++)
{
finalParenthesis = OperandCalculator.GetCalculatedOperands(finalParenthesis, Operator.MULTIPLY, calculatedParenthesis);
}
if (isNegative)
{
finalParenthesis = OperandCalculator.GetCalculatedOperands(GetDefaultOperand(isNegative), Operator.MULTIPLY, finalParenthesis);
}
return(finalParenthesis);
}
//It converts string expression into Operand object of variable.
//In the case of 2x^0, it will be treated as 1.
private void ConvertToVariable(string operandToConvert)
{
this.NaturalNumber = OperandConverter.GetNaturalNumberFromVariable(operandToConvert);
this.Power = OperandConverter.GetPowerFrom(operandToConvert);
}