#include "regex.hpp"

RegEx::~RegEx() {

}

BinOp::~BinOp() {
  delete _levi;
  delete _desni;
}

UnOp::~UnOp() {
  delete _arg;
}


string Slovo::basic() const {
  char tmp[2];
  tmp[0] = _c;
  tmp[1] = '\0';
  return string(tmp);
}

string Konkatenacija::basic() const {
  return "(" + _levi->basic() + ")(" + _desni->basic() + ")";
}

string Disjunkcija::basic() const {
  return "(" + _levi->basic() + ")|(" + _desni->basic() + ")";
}

string Klini::basic() const {
  return "(" + _arg->basic() + ")*";
}

string Plus::basic() const {
  string tmp = _arg->basic();
  return "(" + tmp + ")*(" + tmp + ")";
}

string KarakterskaKlasa::basic() const {
  string tmp;
  for (unsigned i = 0; i < _v.size(); i++) {
    char t[2];
    t[0] = _v[i];
    t[1] = '\0';
    tmp += t;
    if (i < _v.size() - 1)
      tmp += "|";
  }
  return tmp;
}

string Upitnik::basic() const {
  return "(" + _arg->basic() + ")|()";
}

string VisetrukoPojavljivanje::basic() const {
  string tmp;
  for (int i = 0; i < _i; i++)
    tmp += "(" + _arg->basic() + ")";
  return tmp;
}

int Slovo::maxlen() const {
  return 1;
}

int Konkatenacija::maxlen() const {
  int a = _levi->maxlen();
  int b = _desni->maxlen();
  if (a < 0 || b < 0)
    return -1;
  return a + b;
}

int Disjunkcija::maxlen() const {
  int a = _levi->maxlen();
  int b = _desni->maxlen();
  if (a < 0 || b < 0)
    return -1;
  return a < b ? b : a;
}

int Klini::maxlen() const {
  return -1;
}

int Plus::maxlen() const {
  return -1;
}

int KarakterskaKlasa::maxlen() const {
  return 1;
}

int Upitnik::maxlen() const {
  return _arg->maxlen();
}

int VisetrukoPojavljivanje::maxlen() const {
  int a = _arg->maxlen();
  if (a < 0)
    return a;
  return a * _i;
}