Extract raising on unsupported token.

oauthlib/oauth2/rfc6749/endpoints/base.py

@@ -13,7 +13,7 @@
 
 from ..errors import (FatalClientError, OAuth2Error, ServerError,
                       TemporarilyUnavailableError, InvalidRequestError,
-                      InvalidClientError)
+                      InvalidClientError, UnsupportedTokenTypeError)
 
 log = logging.getLogger(__name__)
 
@@ -55,6 +55,13 @@ def _raise_on_invalid_client(self, request):
             log.debug('Client authentication failed, %r.', request)
             raise InvalidClientError(request=request)
 
+    def _raise_on_unspported_token(self, request):
+        """Raise on unsupported tokens."""
+        if (request.token_type_hint and
+            request.token_type_hint in self.valid_token_types and
+            request.token_type_hint not in self.supported_token_types):
+            raise UnsupportedTokenTypeError(request=request)
+
 
 def catch_errors_and_unavailability(f):
     @functools.wraps(f)

oauthlib/oauth2/rfc6749/endpoints/introspect.py

@@ -118,8 +118,4 @@ def validate_introspect_request(self, request):
         """
         self._raise_on_missing_token(request)
         self._raise_on_invalid_client(request)
-
-        if (request.token_type_hint and
-                request.token_type_hint in self.valid_token_types and
-                request.token_type_hint not in self.supported_token_types):
-            raise UnsupportedTokenTypeError(request=request)
+        self._raise_on_unspported_token(request)

oauthlib/oauth2/rfc6749/endpoints/revocation.py

@@ -117,8 +117,4 @@ def validate_revocation_request(self, request):
         """
         self._raise_on_missing_token(request)
         self._raise_on_invalid_client(request)
-
-        if (request.token_type_hint and
-                request.token_type_hint in self.valid_token_types and
-                request.token_type_hint not in self.supported_token_types):
-            raise UnsupportedTokenTypeError(request=request)
+        self._raise_on_unspported_token(request)