[ticket/11649] Expose Twig through the container

PHPBB3-11649

phpBB/config/services.yml

@@ -10,6 +10,7 @@ imports:
     - { resource: mimetype_guessers.yml }
     - { resource: passwords.yml }
     - { resource: profilefields.yml }
+    - { resource: twig.yml }
 
 services:
     acl.permissions:
@@ -339,6 +340,9 @@ services:
             - @config
             - @user
             - @template_context
+            - @template.twig.environment
+            - %core.template.cache_path%
+            - @template.twig.extensions.collection
             - @ext.manager
 
     template_context:

phpBB/config/twig.yml

@@ -0,0 +1,36 @@
+parameters:
+    core.template.cache_path: %core.root_path%cache/twig/
+
+services:
+    template.twig.environment:
+        class: phpbb\template\twig\environment
+        arguments:
+            - @config
+            - @path_helper
+            - @service_container
+            - %core.template.cache_path%
+            - @ext.manager
+            - @template.twig.loader
+
+    template.twig.lexer:
+        class: phpbb\template\twig\lexer
+        arguments:
+            - @template.twig.environment
+
+    template.twig.loader:
+        class: phpbb\template\twig\loader
+
+    template.twig.extensions.collection:
+        class: phpbb\di\service_collection
+        arguments:
+            - @service_container
+        tags:
+            - { name: service_collection, tag: twig.extension }
+
+    template.twig.extensions.phpbb:
+        class: phpbb\template\twig\extension
+        arguments:
+            - @template_context
+            - @user
+        tags:
+            - { name: twig.extension }