feat: add support for add_domain_matching_function (#165)

* feat: add support for add_domain_matching_function

Signed-off-by: Zxilly <zhouxinyu1001@gmail.com>

* style: remove unused code

Signed-off-by: Zxilly <zhouxinyu1001@gmail.com>

* perf: fix enforcer API

Signed-off-by: Zxilly <zhouxinyu1001@gmail.com>

* test: fix readlock tests

Signed-off-by: Zxilly <zhouxinyu1001@gmail.com>

* fix: add error handler for potential keymatch error

Signed-off-by: Zxilly <zhouxinyu1001@gmail.com>

* style: reformat by black

Signed-off-by: Zxilly <zhouxinyu1001@gmail.com>

casbin/core_enforcer.py

@@ -237,11 +237,11 @@ def add_named_matching_func(self, ptype, fn):
 
     def add_named_domain_matching_func(self, ptype, fn):
         """add_named_domain_matching_func add MatchingFunc by ptype to RoleManager"""
-        try:
+        if ptype in self.rm_map.keys():
             self.rm_map[ptype].add_domain_matching_func(fn)
             return True
-        except:
-            return False
+
+        return False
 
     def enforce(self, *rvals):
         """decides whether a "subject" can access a "object" with the operation "action",

casbin/enforcer.py

@@ -136,7 +136,7 @@ def get_implicit_roles_for_user(self, name, domain=None):
 
         return res
 
-    def get_implicit_permissions_for_user(self, user, domain=None):
+    def get_implicit_permissions_for_user(self, user, domain=""):
         """
         gets implicit permissions for a user or role.
         Compared to get_permissions_for_user(), this function retrieves permissions for inherited roles.