nexendrie / menu

src/ConditionCallback.php

<?php
declare(strict_types=1);

namespace Nexendrie\Menu;

/**
 * ConditionCallback
 *
 * @author Jakub Konečný
 */
final class ConditionCallback extends BaseCondition {
  /**
   * @param callable $parameter
   * @throws \InvalidArgumentException
   * @throws \UnexpectedValueException
   */
  public function isAllowed($parameter = null): bool {
    if(!is_callable($parameter)) {
      throw new \InvalidArgumentException("Method " . __METHOD__ . " expects callback as parameter.");
    }
    $result = call_user_func($parameter);
    if(!is_bool($result)) {
      throw new \UnexpectedValueException("The callback for method " . __METHOD__ . " has to return boolean, " . gettype($result) . " returned.");

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    }
    return $result;
  }
}
?>