class RepeatedPass

AnalyzeServiceReferencesPassTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Compiler/AnalyzeServiceReferencesPassTest.php

InlineServiceDefinitionsPassTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Compiler/InlineServiceDefinitionsPassTest.php

RemoveUnusedDefinitionsPassTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Compiler/RemoveUnusedDefinitionsPassTest.php

class RepeatedPass implements CompilerPassInterface {
  private $repeat;
  private $passes;

  /**
   * Constructor.
   *
   * @param array $passes An array of RepeatablePassInterface objects
   * @throws InvalidArgumentException if a pass is not a RepeatablePassInterface instance
   */
  public function __construct(array $passes) {
    foreach ($passes as $pass) {
      if (!$pass instanceof RepeatablePassInterface) {
        throw new InvalidArgumentException('$passes must be an array of RepeatablePassInterface.');
      }
      $pass
        ->setRepeatedPass($this);
    }
    $this->passes = $passes;
  }

  /**
   * Process the repeatable passes that run more than once.
   *
   * @param ContainerBuilder $container
   */
  public function process(ContainerBuilder $container) {
    $this->repeat = false;
    foreach ($this->passes as $pass) {
      $pass
        ->process($container);
    }
    if ($this->repeat) {
      $this
        ->process($container);
    }
  }

  /**
   * Sets if the pass should repeat
   */
  public function setRepeat() {
    $this->repeat = true;
  }

  /**
   * Returns the passes
   *
   * @return array An array of RepeatablePassInterface objects
   */
  public function getPasses() {
    return $this->passes;
  }

}