_loop1598:
_loop1602:
	public final void label_constant(AST _t) throws RecognitionException {				AST label_constant_AST_in = (_t == ASTNULL) ? null : (AST)_t;				if (_t==null) _t=ASTNULL;		switch ( _t.getType()) {		case COLUMNLABEL:		{			AST __t1593 = _t;			AST tmp176_AST_in = (AST)_t;			match(_t,COLUMNLABEL);			_t = _t.getFirstChild();			constant(_t);			_t = _retTree;			{			_loop1595:			do {				if (_t==null) _t=ASTNULL;				if ((_t.getType()==COMMA)) {					AST tmp177_AST_in = (AST)_t;					match(_t,COMMA);					_t = _t.getNextSibling();					constant(_t);					_t = _retTree;				}				else {					break _loop1595;				}							} while (true);			}			_t = __t1593;			_t = _t.getNextSibling();			break;		}		case LABEL:		{			AST __t1596 = _t;			AST tmp178_AST_in = (AST)_t;			match(_t,LABEL);			_t = _t.getFirstChild();			constant(_t);			_t = _retTree;			{			_loop1598:			do {				if (_t==null) _t=ASTNULL;				if ((_t.getType()==COMMA)) {					AST tmp179_AST_in = (AST)_t;					match(_t,COMMA);					_t = _t.getNextSibling();					constant(_t);					_t = _retTree;				}				else {					break _loop1598;				}							} while (true);			}			_t = __t1596;			_t = _t.getNextSibling();			break;		}		default:		{			throw new NoViableAltException(_t);		}		}		_retTree = _t;	}