public double ReadString(string equation, Regex pass, int stringSpot)
{
stringSize = equation.Length;
int place = stringSpot;
string nonConNum = "";
double stringSum = 0;
double a = 0;
Parsing paran = new Parsing();
CalcMethods work = new CalcMethods();
List <double> numsL = new List <double>();
List <char> signL = new List <char>();
r = pass;
for (int x = place; x <= stringSize - 1; x++)
{
if (r.IsMatch(equation[x].ToString()))
{
nonConNum = nonConNum + equation[x].ToString();
if (x == stringSize - 1)
{
a = Convert.ToDouble(nonConNum);
nonConNum = "";
numsL.Add(a);
}
}
else if (equation[x].ToString() == "(" && r.IsMatch(equation[x - 1].ToString()))
{
a = Convert.ToDouble(nonConNum);
nonConNum = "";
numsL.Add(a);
signL.Add('*');
place = x + 1;
numsL.Add(paran.ReadString(equation, pass, place));
x = Program.parsespot;
}
else if (equation[x].ToString() == "(")
{
place = x + 1;
numsL.Add(paran.ReadString(equation, pass, place));
x = Program.parsespot;
}
else if (equation[x].ToString() == ")")
{
if (nonConNum != "")
{
a = Convert.ToDouble(nonConNum);
nonConNum = "";
numsL.Add(a);
}
if (x != stringSize - 1)
{
Program.parsespot = x;
}
else
{
Program.parsespot = x;
}
break;
}
else
{
if (nonConNum != "")
{
a = Convert.ToDouble(nonConNum);
nonConNum = "";
numsL.Add(a);
}
signL.Add(equation[x]);
}
}
work.FillList(numsL, signL);
stringSum = work.DoMath();
return(stringSum);
}