public final StartContext start() throws RecognitionException {
		StartContext _localctx = new StartContext(_ctx, getState());
		enterRule(_localctx, 0, RULE_start);
		try {
			setState(52);
			switch (_input.LA(1)) {
			case 23:
				_localctx = new ProgramContext(_localctx);
				enterOuterAlt(_localctx, 1);
				{
				setState(46); match(23);
				setState(47); ((ProgramContext)_localctx).content = statement();
				}
				break;
			case 4:
				_localctx = new ProgramWithDeclarationsContext(_localctx);
				enterOuterAlt(_localctx, 2);
				{
				setState(48); ((ProgramWithDeclarationsContext)_localctx).declarations = function_decls();
				setState(49); match(23);
				setState(50); ((ProgramWithDeclarationsContext)_localctx).content = statement();
				}
				break;
			default:
				throw new NoViableAltException(this);
			}
		}
		catch (RecognitionException re) {
			_localctx.exception = re;
			_errHandler.reportError(this, re);
			_errHandler.recover(this, re);
		}
		finally {
			exitRule();
		}
		return _localctx;
	}