public string Calculate(string expression)
{
string result;
Parser parser = new Parser();
List <CalcObject> list = new List <CalcObject>();
CalcObject calcObject = new CalcObject();
expression = ModifiedExpression(expression);
if (expression == "")
{
result = "";
}
else
{
list = parser.ParseStringToListOfCalcObjects(expression);
calcObject = Operate(list);
result = calcObject.Value;
}
return(result);
}
public List <CalcObject> ParseStringToListOfCalcObjects(string expression)
{
char[] charArray = expression.ToCharArray();
char symbol;
string number = "";
Determinator determinator = new Determinator();
List <CalcObject> list = new List <CalcObject>();
CalcObject calcObject = new CalcObject();
for (int i = 0; i < charArray.Length; i++)
{
symbol = charArray[i];
determinator.DetermineIsDigit(symbol);
if (!determinator.isDigit)
{
if (number != "")
{
list.Add(calcObject.GetObject(number, !determinator.isDigit));
}
number = "";
list.Add(calcObject.GetObject(charArray[i].ToString(), determinator.isDigit));
}
else
{
number += symbol;
}
}
if (number != "")
{
list.Add(calcObject.GetObject(number, determinator.isDigit));
}
return(list);
}