private UnicodeSet add_unchecked ( int start , int end ) { if ( start < MIN_VALUE || start > MAX_VALUE ) { throw new IllegalArgumentException ( "Invalid code point U+" + Utility . hex ( start , 6 ) ) ; } if ( end < MIN_VALUE || end > MAX_VALUE ) { throw new IllegalArgumentException ( "Invalid code point U+" + Utility . hex ( end , 6 ) ) ; } if ( start < end ) { add ( range ( start , end ) , 2 , 0 ) ; } else if ( start == end ) { add ( start ) ; } return this ; }
for internal use after checkFrozen has been called