sw_case_generate

//globalne promenljive:
  int case_count = 0;
  int case_array[100];
  int switch_id = -1;

//novi tokeni
%token _SWITCH
%token _CASE
%token _BREAK
%token _DEFAULT
%token _COLON

//tipovi pojmova
%type <i> default_statement

//gramatika:

switch_statement
    : _SWITCH _LPAREN _ID
        {
          if( (switch_id = lookup_id($3, LOCAL_VAR)) == -1)
              printerror("'%s' undeclared", $3);
          lab_num = ++false_lab_num;
          gen_num_lab("switch", lab_num);
          code("\n\t\t\tJMP \t@test%d", lab_num);
        }
      _RPAREN  _LBRACKET case_statements default_statement _RBRACKET
        {
          code("\n\t\t\tJMP \t@exit%d", lab_num);
          gen_num_lab("test", lab_num);
          int i;
          for(i = 0; i < case_count; i++) {
            gen_cmp(switch_id, case_array[i]);
            case_array[i] = -1; //ponisti sadrzaj
            code("\n\t\t\tJEQ \t");
            code("@case%d_%d", lab_num, i);
          }

          if($8)
            code("\n\t\t\tJMP \t@default%d", lab_num);
          gen_num_lab("exit", lab_num);
          case_count = 0;
        }
    ;

case_statements
  : case_statement
  | case_statements case_statement
  ;

case_statement
  : _CASE constant _COLON
      {
        code("\n@case%d_%d:", lab_num, case_count);
        case_array[case_count] = $2;
        case_count++;
      }
     statement break_statement
  ;

break_statement
  :
  | _BREAK _SEMICOLON
      { code("\n\t\t\tJMP \t@exit%d", lab_num); }
  ;

default_statement
  :
      { $$ = 0; }

  | _DEFAULT _COLON
      { gen_num_lab("default", lab_num); }
    statement
      { $$ = 1; }
  ;