Issue

core/includes/bootstrap.inc

@@ -2428,7 +2428,7 @@ function language_list($flags = Language::STATE_CONFIGURABLE) {
 
     // Fill in master language list based on current configuration.
     $default = language_default();
-    if (language_multilingual() || module_exists('language')) {
+    if (language_multilingual() || \Drupal::moduleHandler()->moduleExists('language')) {
       // Use language module configuration if available.
       $language_entities = config_get_storage_names_with_prefix('language.entity');
 

core/includes/menu.inc

@@ -2819,7 +2819,7 @@ function menu_get_router() {
  * @todo This function should be removed/refactored.
  */
 function _menu_navigation_links_rebuild($menu) {
-  if (!module_exists('menu_link')) {
+  if (!\Drupal::moduleHandler()->moduleExists('menu_link')) {
     // The Menu link module may not be available during install, so rebuild
     // when possible.
     return;

core/includes/update.inc

@@ -1636,7 +1636,7 @@ function update_language_list($flags = Language::STATE_CONFIGURABLE) {
 
     // Fill in master language list based on current configuration.
     $default = language_default();
-    if (language_multilingual() || module_exists('language')) {
+    if (language_multilingual() || \Drupal::moduleHandler()->moduleExists('language')) {
       // Use language module configuration if available. We can not use
       // entity_load_multiple() because this breaks during updates.
       $language_entities = config_get_storage_names_with_prefix('language.entity');

core/modules/block/block.module

@@ -45,7 +45,7 @@ function block_help($path, $arg) {
       $output .= '<dd>' . t('When working with blocks, remember that all themes do <em>not</em> implement the same regions, or display regions in the same way. Blocks are positioned on a per-theme basis. Users with the <em>Administer blocks</em> permission can disable blocks. Disabled blocks are listed on the <a href="@blocks">Blocks administration page</a>, but are not displayed in any region.', array('@block' => 'http://drupal.org/documentation/modules/block', '@blocks' => url('admin/structure/block'))) . '</dd>';
       $output .= '<dt>' . t('Controlling visibility') . '</dt>';
       $output .= '<dd>' . t('Blocks can be configured to be visible only on certain pages, only to users of certain roles, or only on pages displaying certain <a href="@content-type">content types</a>. Some dynamic blocks, such as those generated by modules, will be displayed only on certain pages.', array('@content-type' => url('admin/structure/types'), '@user' => url('user'))) . '</dd>';
-      if (module_exists('custom_block')) {
+      if (\Drupal::moduleHandler()->moduleExists('custom_block')) {
         $output .= '<dt>' . t('Creating custom blocks') . '</dt>';
         $output .= '<dd>' . t('Users with the <em>Administer blocks</em> permission can add custom blocks, which are then listed on the <a href="@blocks">Blocks administration page</a>. Once created, custom blocks behave just like default and module-generated blocks.', array('@blocks' => url('admin/structure/block'))) . '</dd>';
       }

core/modules/block/custom_block/custom_block.module

@@ -172,7 +172,7 @@ function custom_block_load($id) {
  */
 function custom_block_entity_info_alter(&$types) {
   // Add a translation handler for fields if the language module is enabled.
-  if (module_exists('language')) {
+  if (\Drupal::moduleHandler()->moduleExists('language')) {
     $types['custom_block']['translation']['custom_block'] = TRUE;
   }
 }

core/modules/content_translation/content_translation.pages.inc

@@ -23,7 +23,7 @@ function content_translation_overview(EntityInterface $entity) {
   $languages = language_list();
   $original = $entity->getUntranslated()->language()->id;
   $translations = $entity->getTranslationLanguages();
-  $field_ui = module_exists('field_ui') && user_access('administer ' . $entity->entityType() . ' fields');
+  $field_ui = \Drupal::moduleHandler()->moduleExists('field_ui') && user_access('administer ' . $entity->entityType() . ' fields');
 
   $path = $controller->getViewPath($entity);
   $base_path = $controller->getBasePath($entity);
@@ -270,7 +270,7 @@ function content_translation_delete_confirm_submit(array $form, array &$form_sta
 
   // Remove any existing path alias for the removed translation.
   // @todo This should be taken care of by the Path module.
-  if (module_exists('path')) {
+  if (\Drupal::moduleHandler()->moduleExists('path')) {
     $conditions = array('source' => $controller->getViewPath($entity), 'langcode' => $language->id);
     \Drupal::service('path.crud')->delete($conditions);
   }

core/modules/dblog/dblog.module

@@ -61,7 +61,7 @@ function dblog_menu() {
     'route_name' => 'dblog.event',
   );
 
-  if (module_exists('search')) {
+  if (\Drupal::moduleHandler()->moduleExists('search')) {
     $items['admin/reports/search'] = array(
       'title' => 'Top search phrases',
       'description' => 'View most popular search phrases.',

core/modules/field/field.api.php

@@ -43,7 +43,7 @@
  */
 function hook_field_extra_fields() {
   $extra = array();
-  $module_language_enabled = module_exists('language');
+  $module_language_enabled = \Drupal::moduleHandler()->moduleExists('language');
   $description = t('Node module element');
 
   foreach (node_type_get_types() as $bundle) {

core/modules/field/field.module

@@ -176,7 +176,7 @@ function field_system_info_alter(&$info, $file, $type) {
         }
       }
       if ($non_deleted) {
-        if (module_exists('field_ui')) {
+        if (\Drupal::moduleHandler()->moduleExists('field_ui')) {
           $explanation = t('Field type(s) in use - see <a href="@fields-page">Field list</a>', array('@fields-page' => url('admin/reports/fields')));
         }
         else {

core/modules/help/help.module

@@ -37,7 +37,7 @@ function help_help($path, $arg) {
       $output .= '<li>' . t('<strong>Enable additional functionality</strong> Next, visit the <a href="@modules">module list</a> and enable features which suit your specific needs. You can find additional modules in the <a href="@download_modules">Drupal modules download section</a>.', array('@modules' => url('admin/modules'), '@download_modules' => 'http://drupal.org/project/modules')) . '</li>';
       $output .= '<li>' . t('<strong>Customize your website design</strong> To change the "look and feel" of your website, visit the <a href="@themes">themes section</a>. You may choose from one of the included themes or download additional themes from the <a href="@download_themes">Drupal themes download section</a>.', array('@themes' => url('admin/appearance'), '@download_themes' => 'http://drupal.org/project/themes')) . '</li>';
       // Display a link to the create content page if Node module is enabled.
-      if (module_exists('node')) {
+      if (\Drupal::moduleHandler()->moduleExists('node')) {
         $output .= '<li>' . t('<strong>Start posting content</strong> Finally, you can <a href="@content">add new content</a> for your website.', array('@content' => url('node/add'))) . '</li>';
       }
       $output .= '</ol>';

core/modules/language/language.admin.inc

@@ -273,7 +273,7 @@ function language_negotiation_configure_form_submit($form, &$form_state) {
 
   // Clear block definitions cache since the available blocks and their names
   // may have been changed based on the configurable types.
-  if (module_exists('block')) {
+  if (\Drupal::moduleHandler()->moduleExists('block')) {
     // If there is an active language switcher for a language type that has been
     // made not configurable, deactivate it first.
     $non_configurable = array_keys(array_diff($customized, array_filter($customized)));

core/modules/menu/menu.module

@@ -45,7 +45,7 @@ function menu_help($path, $arg) {
     case 'admin/structure/menu/add':
       return '<p>' . t('You can enable the newly-created block for this menu on the <a href="@blocks">Blocks administration page</a>.', array('@blocks' => url('admin/structure/block'))) . '</p>';
   }
-  if ($path == 'admin/structure/menu' && module_exists('block')) {
+  if ($path == 'admin/structure/menu' && \Drupal::moduleHandler()->moduleExists('block')) {
     return '<p>' . t('Each menu has a corresponding block that is managed on the <a href="@blocks">Blocks administration page</a>.', array('@blocks' => url('admin/structure/block'))) . '</p>';
   }
 }

core/modules/node/node.module

@@ -279,7 +279,7 @@ function node_mark($nid, $timestamp) {
   global $user;
   $cache = &drupal_static(__FUNCTION__, array());
 
-  if ($user->isAnonymous() || !module_exists('history')) {
+  if ($user->isAnonymous() || !\Drupal::moduleHandler()->moduleExists('history')) {
     return MARK_READ;
   }
   if (!isset($cache[$nid])) {
@@ -443,7 +443,7 @@ function node_add_body_field(NodeTypeInterface $type, $label = 'Body') {
  */
 function node_field_extra_fields() {
   $extra = array();
-  $module_language_enabled = module_exists('language');
+  $module_language_enabled = \Drupal::moduleHandler()->moduleExists('language');
   $description = t('Node module element');
 
   foreach (node_type_get_types() as $bundle) {

core/modules/node/node.views.inc

@@ -648,7 +648,7 @@ function node_row_node_view_preprocess_node(&$variables) {
  */
 function node_views_wizard() {
   // @todo: figure this piece out.
-  if (module_exists('statistics')) {
+  if (\Drupal::moduleHandler()->moduleExists('statistics')) {
     $plugins['node']['available_sorts']['node_counter-totalcount:DESC'] = t('Number of hits');
   }
 

core/modules/overlay/overlay.module

@@ -501,7 +501,7 @@ function overlay_overlay_parent_initialize() {
   }
   drupal_add_js(array('overlay' => array('paths' => $paths)), 'setting');
   $path_prefixes = array();
-  if (module_exists('language')) {
+  if (\Drupal::moduleHandler()->moduleExists('language')) {
     language_negotiation_include();
     if (\Drupal::config('language.negotiation')->get('url.source') == LANGUAGE_NEGOTIATION_URL_PREFIX) {
       // Skip the empty string indicating the default language. We always accept

core/modules/path/path.admin.inc

@@ -21,7 +21,7 @@ function path_admin_overview($keys = NULL) {
   // Enable language column if language.module is enabled or if we have any
   // alias with a language.
   $alias_exists = (bool) db_query_range('SELECT 1 FROM {url_alias} WHERE langcode <> :langcode', 0, 1, array(':langcode' => Language::LANGCODE_NOT_SPECIFIED))->fetchField();
-  $multilanguage = (module_exists('language') || $alias_exists);
+  $multilanguage = (\Drupal::moduleHandler()->moduleExists('language') || $alias_exists);
 
   $header = array();
   $header[] = array('data' => t('Alias'), 'field' => 'alias', 'sort' => 'asc');
@@ -157,7 +157,7 @@ function path_admin_form($form, &$form_state, $path = array('source' => '', 'ali
   );
 
   // A hidden value unless language.module is enabled.
-  if (module_exists('language')) {
+  if (\Drupal::moduleHandler()->moduleExists('language')) {
     $languages = language_list();
     foreach ($languages as $langcode => $language) {
       $language_options[$langcode] = $language->name;

core/modules/system/system.install

@@ -505,7 +505,7 @@ function system_requirements($phase) {
 
   if ($phase == 'runtime') {
     // Check for update status module.
-    if (!module_exists('update')) {
+    if (!\Drupal::moduleHandler()->moduleExists('update')) {
       $requirements['update status'] = array(
         'value' => t('Not enabled'),
         'severity' => REQUIREMENT_WARNING,

core/modules/system/system.module

@@ -103,7 +103,7 @@ function system_help($path, $arg) {
       return '<p>' . t('These options control the default display settings for your entire site, across all themes. Unless they have been overridden by a specific theme, these settings will be used.') . '</p>';
     case 'admin/modules':
       $output = '<p>' . t('Download additional <a href="@modules">contributed modules</a> to extend Drupal\'s functionality.', array('@modules' => 'http://drupal.org/project/modules')) . '</p>';
-      if (module_exists('update')) {
+      if (\Drupal::moduleHandler()->moduleExists('update')) {
         if (update_manager_access()) {
           $output .= '<p>' . t('Regularly review and install <a href="@updates">available updates</a> to maintain a secure and current site. Always run the <a href="@update-php">update script</a> each time a module is updated.', array('@update-php' => $base_url . '/core/update.php', '@updates' => url('admin/reports/updates'))) . '</p>';
         }
@@ -886,7 +886,7 @@ function system_menu() {
   );
 
   // Localize date formats.
-  if (module_exists('language')) {
+  if (\Drupal::moduleHandler()->moduleExists('language')) {
     $items['admin/config/regional/date-time/locale'] = array(
       'title' => 'Localize',
       'description' => 'Configure date formats for each locale',

core/modules/system/tests/modules/entity_test/entity_test.views.inc

@@ -55,7 +55,7 @@ function entity_test_views_data() {
     ),
   );
 
-  if (module_exists('langcode')) {
+  if (\Drupal::moduleHandler()->moduleExists('langcode')) {
     $data['entity_test']['langcode'] = array(
       'title' => t('Language'),
       'help' => t('The {language}.langcode of the original variant of this test entity.'),

core/modules/tracker/tracker.pages.inc

@@ -101,7 +101,7 @@ function tracker_page($account = NULL, $set_title = FALSE) {
       );
 
       // Adds extra RDFa markup to the $row array if the RDF module is enabled.
-      if (module_exists('rdf')) {
+      if (\Drupal::moduleHandler()->moduleExists('rdf')) {
         $mapping = rdf_get_mapping('node', $node->getType());
         // Adds RDFa markup to the title of the node. Because the RDFa markup is
         // added to the td tag which might contain HTML code, we specify an