Primera caida de la progra Compi 2

    [RuleVersion(0)]
    public ProgramContext program() {
        ProgramContext _localctx = new ProgramContext(_ctx, State);
        EnterRule(_localctx, 0, RULE_program);
        int _la;
        try {
            _localctx = new ProgramASTContext(_localctx);
            EnterOuterAlt(_localctx, 1);
            {
            State = 40; ((ProgramASTContext)_localctx).tclass = Match(CLASS);
            State = 41; ((ProgramASTContext)_localctx).tident = Match(IDENT);
            State = 47;
            _errHandler.Sync(this);
            _la = _input.La(1);
            while ((((_la) & ~0x3f) == 0 && ((1L << _la) & ((1L << CLASS) | (1L << CONST) | (1L << IDENT))) != 0)) {
                {
                State = 45;
                switch (_input.La(1)) {
                case CONST:
                    {
                    State = 42; const_decl();
                    }
                    break;
                case IDENT:
                    {
                    State = 43; var_decl();
                    }
                    break;
                case CLASS:
                    {
                    State = 44; class_decl();
                    }
                    break;
                default:
                    throw new NoViableAltException(this);
                }
                }
                State = 49;
                _errHandler.Sync(this);
                _la = _input.La(1);
            }
            State = 50; ((ProgramASTContext)_localctx).tlcb = Match(LEFT_CURLY_BRACKET);
            State = 54;
            _errHandler.Sync(this);
            _la = _input.La(1);
            while (_la==VOID || _la==IDENT) {
                {
                {
                State = 51; method_decl();
                }
                }
                State = 56;
                _errHandler.Sync(this);
                _la = _input.La(1);
            }
            State = 57; ((ProgramASTContext)_localctx).trcb = Match(RIGHT_CURLY_BRACKET);
            State = 58; Match(Eof);
            }
        }
        catch (RecognitionException re) {
            _localctx.exception = re;
            _errHandler.ReportError(this, re);
            _errHandler.Recover(this, re);
        }
        finally {
            ExitRule();
        }
        return _localctx;
    }