/* PIA - Lenguajes Modernos de Programación
 * FACULTAD DE CIENCIAS FÍSICO MATEMÁTICAS
 * Luis Sebastián Martínez Vega - LCC */

#include <cstddef>
#include <iterator>
#include <ostream>
#include <string>
#include <vector>
#include <iostream>
#include "include/parser.hpp"
#include "include/expressions.hpp"
#include "include/exceptions.hpp"
#include "include/differentiator.hpp"
#include "include/simplifier.hpp"

using std::string, std::cin, std::cout, std::getline, std::vector,
  std::begin, std::end, std::endl;

int main() {
  int counter = 1;
  string input;
  Parser parser;
  Expression *tree = NULL, *simplified = NULL, *diff = NULL;

  cout << ">> ";
  while(getline(cin, input)) {
    try {
      tree = parser.parse(input);
    } catch(const ParserException &e) {
      cout << e.showMsg() << "\n";
      cout << ">> ";
      tree = NULL;
      continue;
    }

    diff = deriv(tree);
    simplified = simplify(diff);
    cout << "OUT " << counter << ": " << simplified->getRepr() << "\n";
    cout << ">> ";

    delete tree;
    delete simplified;
    delete diff;
    tree = NULL;
    simplified = NULL;
    diff = NULL;
    ++counter;
  }

  cout << "Adiós!\n" << endl;
  
  return 0;
}