%{

  #include <iostream>
  #include <string>
  #include <cstdlib>
  #include "regex.hpp"
  
  #define YYDEBUG 1
  using namespace std;
  
  void yyerror(string s) {
    cerr << s << endl;
    exit(EXIT_FAILURE);
  }

  extern int yylex();

  
%}

%union {
  char c;
  RegEx *r;
}

%token basic_token
%token <c> slovo_token

%type <r> E T F

%%
Program: Program Naredba '\n' {

 }
| Naredba '\n' {

 }
;

Naredba: basic_token E {
  $2->basic();
  cout << endl;
  delete $2;
 }
;

E: E '|' T {
  $$ = new Disjunkcija($1, $3);
 }
| T {
  $$ = $1;
 }
;

T: T F {
  $$ = new Konkatenacija($1, $2);
 }
| F {
  $$ = $1;
 }
;

F: F '*' {
  $$ = new Klini($1);
 }
| slovo_token {
  $$ = new Slovo($1);
 }
| '(' E ')' {
  $$ = $2;
  }
;

%%
int main() {
  //yydebug = 1;
  yyparse();
  return 0;
}