nl_tokens: ( protected ) r = this >> n * DB
pl_tokens: function bnpDRShiftTo ( n , r ) { var this_array = this . array ; var r_array = r . <mask> ; for ( var i = n ; i < this . t ; ++ i ) r_array [ i - n ] = this_array [ i ] ; r . t = Math . max ( this . t - n , 0 ) ; r . s = this . s ; }