AST tmp1968_AST_in = (AST)_t;
AST tmp1967_AST_in = (AST)_t;
	public final void deletealiasstate(AST _t) throws RecognitionException {				AST deletealiasstate_AST_in = (_t == ASTNULL) ? null : (AST)_t;				AST __t1875 = _t;		AST tmp1968_AST_in = (AST)_t;		match(_t,DELETE_KW);		_t = _t.getFirstChild();		AST tmp1969_AST_in = (AST)_t;		match(_t,ALIAS);		_t = _t.getNextSibling();		{		if (_t==null) _t=ASTNULL;		switch ( _t.getType()) {		case ID:		{			AST tmp1970_AST_in = (AST)_t;			match(_t,ID);			_t = _t.getNextSibling();			break;		}		case QSTRING:		{			AST tmp1971_AST_in = (AST)_t;			match(_t,QSTRING);			_t = _t.getNextSibling();			break;		}		case VALUE:		{			valueexpression(_t);			_t = _retTree;			break;		}		default:		{			throw new NoViableAltException(_t);		}		}		}		state_end(_t);		_t = _retTree;		_t = __t1875;		_t = _t.getNextSibling();		_retTree = _t;	}