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<?php
namespace Vanderlee\Comprehend\Match\Output;
use Vanderlee\Comprehend\Core\Token;
trait TokenTrait
{
/**
* List of callbacks to process for tokens.
*
* @var callable
*/
private $tokenCallback = null;
* Add a callback to this match, to be called after parsing is finished and
* only if this match was part of the matched rules.
* @param callable $callback
* @return $this
public function setTokenCallback(callable $callback)
$this->tokenCallback = $callback;
return $this;
}
* @return Token|null
private function processTokenCallback()
$children = [];
/** @var self $success */
foreach ($this->successes as $success) {
$children[] = $success->processTokenCallback();
if ($this->tokenCallback) {
$tokenCallback = $this->tokenCallback;
return $tokenCallback($children);
return null;
* @return Token
public function getToken()
return $this->processTokenCallback();
vanderlee /
Comprehend
