private static SymbolicVariable ArithExpression(SymbolicExpressionOperator eop, out short skip)
{
SymbolicVariable left = eop.SymbolicExpression;
string op = eop.Operation;
SymbolicVariable right = eop.Next.SymbolicExpression;
skip = 1;
if (op == "|")
{
int p = (int)right.SymbolPower;
string rp = right.Symbol;
SymbolicVariable v = left;
while (p > 0)
{
v = v.Differentiate(rp);
p--;
}
return(v);
}
if (op == "^")
{
// This will be right associative operator
// which means if more than one power appeared like this 3^2^4 then it will be processed like this 3^(2^4)
if (eop.Next.Next != null)
{
if (eop.Next.Operation == "^")
{
short iskip;
var powerResult = SymbolicVariable.SymbolicPower(
left
, ArithExpression(eop.Next, out iskip)
);
skip += iskip;
return(powerResult);
}
else
{
return(SymbolicVariable.SymbolicPower(left, right));
}
}
else
{
return(SymbolicVariable.SymbolicPower(left, right));
}
}
if (op == "*")
{
return(SymbolicVariable.Multiply(left, right));
}
if (op == "/")
{
return(SymbolicVariable.Divide(left, right));
}
if (op == "+")
{
return(SymbolicVariable.Add(left, right));
}
if (op == "-")
{
return(SymbolicVariable.Subtract(left, right));
}
throw new NotSupportedException("Not Supported Operator '" + op + "'");
}