AST tmp2151_AST_in = (AST)_t;
AST tmp2163_AST_in = (AST)_t;
	public final void seekstate(AST _t) throws RecognitionException {				AST seekstate_AST_in = (_t == ASTNULL) ? null : (AST)_t;				AST __t2249 = _t;		AST tmp2150_AST_in = (AST)_t;		match(_t,SEEK);		_t = _t.getFirstChild();		{		if (_t==null) _t=ASTNULL;		switch ( _t.getType()) {		case INPUT:		{			AST tmp2151_AST_in = (AST)_t;			match(_t,INPUT);			_t = _t.getNextSibling();			break;		}		case OUTPUT:		{			AST tmp2152_AST_in = (AST)_t;			match(_t,OUTPUT);			_t = _t.getNextSibling();			break;		}		case STREAM:		{			stream_name(_t);			_t = _retTree;			break;		}		default:		{			throw new NoViableAltException(_t);		}		}		}		AST tmp2153_AST_in = (AST)_t;		match(_t,TO);		_t = _t.getNextSibling();		{		if (_t==null) _t=ASTNULL;		if ((_tokenSet_3.member(_t.getType()))) {			expression(_t);			_t = _retTree;		}		else if ((_t.getType()==END)) {			AST tmp2154_AST_in = (AST)_t;			match(_t,END);			_t = _t.getNextSibling();		}		else {			throw new NoViableAltException(_t);		}				}		state_end(_t);		_t = _retTree;		_t = __t2249;		_t = _t.getNextSibling();		_retTree = _t;	}