d.w.writeBlock(tokens, false, window)
		return d.w.err
	}
	return nil
}

// fillWindow will fill the current window with the supplied
// dictionary and calculate all hashes.
// This is much faster than doing a full encode.
// Should only be used after a reset.
func (d *compressor) fillWindow(b []byte) {
	// Do not fill window if we are in store-only mode.
	if d.compressionLevel.level < 2 {
		return