#include <iostream>
#include "uCalc.h"

using namespace std;
using namespace uCalcSoftware;

int main() {
   uCalc uc;
   auto t = uc.ExpressionTransformer();

   // Base case: a single argument
   t.FromTo("AddUp({x})", "{x}");

   // Recursive case: multiple arguments
   // RewindOnChange(true) causes the transformer to re-scan the string after a replacement.
   // This allows AddUp(1,2,3) -> (1 + AddUp(2,3)) -> (1 + (2 + AddUp(3))) -> (1 + (2 + 3))
   t.FromTo("AddUp({x}, {y})", "({x} + AddUp({y}))").RewindOnChange(true);

   cout << "Input: AddUp(1, 2, 3, 4)" << endl;
   cout << "Result: " << uc.Eval("AddUp(1, 2, 3, 4)") << endl;
}