dr8_zth/src/DemoServiceProvider.php

<?php

namespace Drupal\demo;


use Drupal\Component\Utility\Unicode;
use Drupal\Core\DependencyInjection\ContainerBuilder;
use Drupal\Core\DependencyInjection\ServiceProviderInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\DependencyInjection\Reference;

class DemoServiceProvider implements ServiceProviderInterface {

  public function boolRow(Definition $def, $check) {
    $method = 'is' . Unicode::ucwords($check);
    $ret = [$check];
    $ret[] = $def->{$method}() ? 'Yes' : 'No';
    return $ret;
  }

  /**
   * Provide a textual representation of an argument or method call parameter.
   *
   * @see http://symfony.com/doc/current/service_container/optional_dependencies.html
   *
   * @param mixed $param
   *
   * @return string
   */
  public function formatParameter($param) {
    if ($param instanceof Reference) {
      $prefix = '@';

      $behavior = $param->getInvalidBehavior();
      switch ($behavior) {
        case ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE:
          // Default handling.
          break;

        case ContainerInterface::NULL_ON_INVALID_REFERENCE:
          // No YAML representation.
          $prefix .= '(Null)';
          break;

        case ContainerInterface::IGNORE_ON_INVALID_REFERENCE:
          $prefix .= '?';
          break;

        default:
          $prefix .= "($behavior)";
          break;
      }
      $result = "{$prefix}{$param}";
    }
    else {
      $result = $param;
    }
    return $result;
  }

  /**
   * Registers services to the container.
   *
   * @param ContainerBuilder $container
   *   The ContainerBuilder to register services to.
   */
  public function register(ContainerBuilder $container) {
    $id = 'url_generator';
    $id = 'http_middleware.session';
    $def = $container->getDefinition($id);


    $rows = [];
    $rows[] = ['Option', 'Value'];
    $rows[] = [str_repeat('-', 20), str_repeat('-', 80)];
    $rows[] = ['Service ID', $id];
    $rows[] = ['Class', $def->getClass()];

    $rows[] = ['Factory', $def->getFactory()];
    $calls = $def->getMethodCalls();
    $call_rows = [];
    foreach ($calls as $call) {
      list($method, $params) = $call;
      $params = implode(', ', array_map([$this, 'formatParameter'], $params));
      $call_rows[] = [NULL, "$method($params)"];
    }
    if (empty($call_rows)) {
      $call_rows[] = [NULL, '-'];
    }
    $call_rows[0][0] = 'Calls';
    $rows = array_merge($rows, $call_rows);

    $tags = $def->getTags();
    $first = TRUE;
    $tag_rows = [];
    foreach ($tags as $tag => $info) {
      if (strpos($tag, '_') === 0) {
        continue;
      }
      foreach ($info as $info_row) {
        foreach ($info_row as $name => $value) {
          $row = [NULL, $tag, $name, $value];
        }
        if ($first) {
          $row[0] = 'Tags';
          $first = FALSE;
        }
        $tag_rows[] = $row;
      }
    }
    if (empty($tag_rows)) {
      $tag_rows[] = ['Tags', '-'];
    }
    $rows = array_merge($rows, $tag_rows);

    $rows[] = $this->boolRow($def, 'Public');
    $rows[] = $this->boolRow($def, 'Synthetic');
    $rows[] = $this->boolRow($def, 'Lazy');
    $rows[] = $this->boolRow($def, 'Shared');
    $rows[] = $this->boolRow($def, 'Abstract');
    $rows[] = $this->boolRow($def, 'Autowired');

    foreach ($rows as $row) {
      $left = $row[0];
      $right = $row[1];
      $three = $row[2] ?? NULL;
      $four = $row[3] ?? NULL;
      printf("%-20s %-20s %-20s %s\n", $left, $right, $three, $four);
    }
    echo "\n";

  }
}