revert the dispatcher changes

sphinx/application.py

@@ -1045,9 +1045,6 @@ class Sphinx:
         logger.debug('[app] adding autodoc attrgetter: %r', (typ, getter))
         self.registry.add_autodoc_attrgetter(typ, getter)
 
-    def add_autosummary_get_documenter(self, func: Callable) -> None:
-        self.registry.add_autosummary_get_documenter(func)
-
     def add_search_language(self, cls: Any) -> None:
         """Register a new language for the HTML search index.
 

sphinx/ext/autosummary/__init__.py

@@ -298,25 +298,6 @@ class Autosummary(SphinxDirective):
 
                 raise exc  # re-raise ImportError if instance attribute not found
 
-    def dispatch_get_documenter(self, obj, parent, real_name):
-        app = self.env.app
-        documenters = [
-            func(self, obj, parent, real_name)
-            for func in app.registry.custom_get_documenter_funcs
-        ]
-        sorted_documenters = sorted(
-            [
-                documenter
-                for documenter in documenters
-                if documenter is not NotImplemented
-            ],
-            key=lambda d: d.priority,
-        )
-        if sorted_documenters:
-            return sorted_documenters[-1]
-        else:
-            return get_documenter(app, obj, parent)
-
     def get_items(self, names: List[str]) -> List[Tuple[str, str, str, str]]:
         """Try to import the given names, and return a list of
         ``[(name, signature, summary_string, real_name), ...]``.
@@ -348,7 +329,7 @@ class Autosummary(SphinxDirective):
                 full_name = modname + '::' + full_name[len(modname) + 1:]
             # NB. using full_name here is important, since Documenters
             #     handle module prefixes slightly differently
-            doccls = self.dispatch_get_documenter(obj, parent, real_name)
+            doccls = get_documenter(self.env.app, obj, parent)
             documenter = doccls(self.bridge, full_name)
             if not documenter.parse_name():
                 logger.warning(__('failed to parse name %s'), real_name,

sphinx/registry.py

@@ -61,9 +61,6 @@ class SphinxComponentRegistry:
         #: autodoc documenters; a dict of documenter name -> documenter class
         self.documenters = {}           # type: Dict[str, Type[Documenter]]
 
-        #: autosummary documenter functions
-        self.custom_get_documenter_funcs = []  # type: List[Callable]
-
         #: css_files; a list of tuple of filename and attributes
         self.css_files = []             # type: List[Tuple[str, Dict[str, str]]]
 
@@ -363,9 +360,6 @@ class SphinxComponentRegistry:
                                attrgetter: Callable[[Any, str, Any], Any]) -> None:
         self.autodoc_attrgettrs[typ] = attrgetter
 
-    def add_autosummary_get_documenter(self, func: Callable) -> None:
-        self.custom_get_documenter_funcs.append(func)
-
     def add_css_files(self, filename: str, **attributes: str) -> None:
         self.css_files.append((filename, attributes))