AST tmp653_AST_in = (AST)_t;
AST tmp652_AST_in = (AST)_t;
	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 __t2013 = _t;			AST tmp652_AST_in = (AST)_t;			match(_t,COLUMNLABEL);			_t = _t.getFirstChild();			constant(_t);			_t = _retTree;			{			_loop2015:			do {				if (_t==null) _t=ASTNULL;				if ((_t.getType()==COMMA)) {					AST tmp653_AST_in = (AST)_t;					match(_t,COMMA);					_t = _t.getNextSibling();					constant(_t);					_t = _retTree;				}				else {					break _loop2015;				}							} while (true);			}			_t = __t2013;			_t = _t.getNextSibling();			break;		}		case LABEL:		{			AST __t2016 = _t;			AST tmp654_AST_in = (AST)_t;			match(_t,LABEL);			_t = _t.getFirstChild();			constant(_t);			_t = _retTree;			{			_loop2018:			do {				if (_t==null) _t=ASTNULL;				if ((_t.getType()==COMMA)) {					AST tmp655_AST_in = (AST)_t;					match(_t,COMMA);					_t = _t.getNextSibling();					constant(_t);					_t = _retTree;				}				else {					break _loop2018;				}							} while (true);			}			_t = __t2016;			_t = _t.getNextSibling();			break;		}		default:		{			throw new NoViableAltException(_t);		}		}		_retTree = _t;	}