interface vfsStreamVisitor

interface vfsStreamVisitor {
    
    /**
     * visit a content and process it
     *
     * @param   vfsStreamContent  $content
     * @return  vfsStreamVisitor
     */
    public function visit(vfsStreamContent $content);
    
    /**
     * visit a file and process it
     *
     * @param   vfsStreamFile  $file
     * @return  vfsStreamVisitor
     */
    public function visitFile(vfsStreamFile $file);
    
    /**
     * visit a directory and process it
     *
     * @param   vfsStreamDirectory  $dir
     * @return  vfsStreamVisitor
     */
    public function visitDirectory(vfsStreamDirectory $dir);
    
    /**
     * visit a block device and process it
     *
     * @param   vfsStreamBlock  $block
     * @return  vfsStreamVisitor
     */
    public function visitBlockDevice(vfsStreamBlock $block);

}