/**
* Hash a given text.
*
* Called whenever a tag must be hashed when a function insert an
* atomic element in the text stream. Passing $text to through this
* function gives a unique text-token which will be reverted back when
* calling unhash.
*
* @param string $text The text to be hashed
*
* @return string Return a unique text-token which will be
* reverted back when calling unhash.
*/
protected function hash($text)
{
static $counter = 0;
// Swap back any tag hash found in $text so we do not have to `unhash`
// multiple times at the end.
$text = $this->unhash($text);
// Then hash the block
$key = implode("A", array('shortcodes', $this->page->id(), ++$counter, 'S'));
$this->hashes[$key] = $text;
// String that will replace the tag
return $key;
}
