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

using namespace std;
using namespace uCalcSoftware;

int main() {
   uCalc uc;
   auto ExprT = uc.ExpressionTransformer();  // Transformer used for Eval() and Evaluate()

   ExprT.DefaultRuleSet().RewindOnChange(true);

   ExprT.FromTo("AddUp({x})", "{x}");
   ExprT.FromTo("AddUp({x}, {y})", "({x} + AddUp({y}))");

   ExprT.FromTo("ArgCount({x})", "1");
   ExprT.FromTo("ArgCount({x}, {y})", "(1 + ArgCount({y}))");

   ExprT.FromTo("Average({x}, {y})", "AddUp({x}, {y}) / ArgCount({x}, {y})");

   auto Expression = "Average(1, 2, 3, 4)";
   cout << "Input: " << Expression << endl;
   cout << "Transform: " << ExprT.Transform(Expression) << endl;
   cout << "Eval: " << uc.Eval(Expression) << endl;
}