class Compiler

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

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

ContainerBuilder.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/ContainerBuilder.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 Compiler {
  private $passConfig;
  private $log;
  private $loggingFormatter;
  private $serviceReferenceGraph;

  /**
   * Constructor.
   */
  public function __construct() {
    $this->passConfig = new PassConfig();
    $this->serviceReferenceGraph = new ServiceReferenceGraph();
    $this->loggingFormatter = new LoggingFormatter();
    $this->log = array();
  }

  /**
   * Returns the PassConfig.
   *
   * @return PassConfig The PassConfig instance
   *
   * @api
   */
  public function getPassConfig() {
    return $this->passConfig;
  }

  /**
   * Returns the ServiceReferenceGraph.
   *
   * @return ServiceReferenceGraph The ServiceReferenceGraph instance
   *
   * @api
   */
  public function getServiceReferenceGraph() {
    return $this->serviceReferenceGraph;
  }

  /**
   * Returns the logging formatter which can be used by compilation passes.
   *
   * @return LoggingFormatter
   */
  public function getLoggingFormatter() {
    return $this->loggingFormatter;
  }

  /**
   * Adds a pass to the PassConfig.
   *
   * @param CompilerPassInterface $pass A compiler pass
   * @param string                $type The type of the pass
   *
   * @api
   */
  public function addPass(CompilerPassInterface $pass, $type = PassConfig::TYPE_BEFORE_OPTIMIZATION) {
    $this->passConfig
      ->addPass($pass, $type);
  }

  /**
   * Adds a log message.
   *
   * @param string $string The log message
   */
  public function addLogMessage($string) {
    $this->log[] = $string;
  }

  /**
   * Returns the log.
   *
   * @return array Log array
   */
  public function getLog() {
    return $this->log;
  }

  /**
   * Run the Compiler and process all Passes.
   *
   * @param ContainerBuilder $container
   *
   * @api
   */
  public function compile(ContainerBuilder $container) {
    foreach ($this->passConfig
      ->getPasses() as $pass) {
      $pass
        ->process($container);
    }
  }

}