Apply Grammar.patch to reflect previous phpstan state

Author: Seldaek

resources/RegexGrammar.pp

@@ -73,7 +73,7 @@
 %token  co:comment               .*?(?=(?<!\\)\))
 
 // Capturing group.
-%token  named_capturing_         \(\?<              -> nc
+%token  named_capturing_         \(\?P?<            -> nc
 %token  nc:_named_capturing      >                  -> default
 %token  nc:capturing_name        .+?(?=(?<!\\)>)
 %token  non_capturing_           \(\?:
@@ -109,7 +109,7 @@
 // Please, see PCRESYNTAX(3), General Category properties, PCRE special category
 // properties and script names for \p{} and \P{}.
 %token character_type            \\([CdDhHNRsSvVwWX]|[pP]{[^}]+})
-%token anchor                    \\(bBAZzG)|\^|\$
+%token anchor                    \\([bBAZzG])|\^|\$
 %token match_point_reset         \\K
 %token literal                   \\.|.
 
@@ -168,7 +168,7 @@
         ::negative_class_:: #negativeclass
       | ::class_::
     )
-    ( range() | literal() )+
+    ( <class_> | range() | literal() )+
     ::_class::
 
 #range:
@@ -178,7 +178,7 @@
     capturing()
   | literal()
 
-capturing:
+#capturing:
     ::comment_:: <comment>? ::_comment:: #comment
   | (
         ::named_capturing_:: <capturing_name> ::_named_capturing:: #namedcapturing
@@ -191,6 +191,7 @@
 
 literal:
     <character>
+  | <range>
   | <dynamic_character>
   | <character_type>
   | <anchor>