%{

#include <iostream>
#include <string>
#include <cstdlib>
#include "izrazi.hpp"
#include "naredbe.hpp"
  using namespace std;

  void yyerror(string s) {
    cerr << s << endl;
    exit(EXIT_FAILURE);
  }

  extern int yylex();

%}

%token ispisi_token mod_token kraj_token pocetak_token
%token <d> num_token
%token <s> string_token

%type <i> E
%type <n> Naredba Blok
%type <v> NizNaredbi

%union {
  int d;
  Izraz* i;
  Naredba* n;
  string *s;
  vector<Naredba*> *v;
}

%left '+' '-'
%left '*' '/' mod_token

%%
Program: Blok '.' {
  $1->izvrsi();
  delete $1;
 }
;
Blok: pocetak_token NizNaredbi kraj_token {
  $$ = new Blok(*$2);
  delete $2;
 }
;

NizNaredbi: NizNaredbi ';' Naredba {
  $$ = $1;
  $$->push_back($3);
 }
| Naredba {
  $$ = new vector<Naredba*>();
  $$->push_back($1);
 }
;

Naredba: ispisi_token '(' string_token ')' {
  $$ = new IspisS(*$3);
  delete $3;
 }
| ispisi_token '(' E ')' {
  $$ = new IspisE($3);
 }
;

E: E '+' E {
  $$ = new Zbir($1, $3);
 }
| E '-' E {
  $$ = new Razlika($1, $3);
  }
| E '*' E {
  $$ = new Proizvod($1, $3);
  }
| E '/' E {
  $$ = new Kolicnik($1, $3);
  }
| E mod_token E {
   $$ = new Mod($1, $3);
 }
| '(' E ')' {
  $$ = $2;
 }
| num_token {
  $$ = new Konstanta($1);
 }
;
%%
int main() {
  yyparse();
  return 0;
}