4 files changed, 12 insertions, 73 deletions

diff --git a/src/di_container/asynchronous/mod.rs b/src/di_container/asynchronous/mod.rs
index e651d81..827364d 100644
--- a/src/di_container/asynchronous/mod.rs
+++ b/src/di_container/asynchronous/mod.rs
@@ -299,7 +299,9 @@ impl AsyncDIContainer
                         }
                     })?;
 
-                Ok(SomePtr::ThreadsafeFactory(factory(self.clone()).into()))
+                Ok(SomePtr::ThreadsafeFactory(
+                    factory.call(self.clone()).into(),
+                ))
             }
             #[cfg(feature = "factory")]
             AsyncProvidable::DefaultFactory(binding) => {
@@ -315,7 +317,7 @@ impl AsyncDIContainer
                     DefaultFactoryFn<Interface>,
                 >(binding, "default factory")?;
 
-                Ok(SomePtr::Transient(default_factory(self.clone())()))
+                Ok(SomePtr::Transient(default_factory.call(self.clone())()))
             }
             #[cfg(feature = "factory")]
             AsyncProvidable::AsyncDefaultFactory(binding) => {
@@ -337,7 +339,7 @@ impl AsyncDIContainer
                 )?;
 
                 Ok(SomePtr::Transient(
-                    async_default_factory(self.clone())().await,
+                    async_default_factory.call(self.clone())().await,
                 ))
             }
         }
diff --git a/src/lib.rs b/src/lib.rs
index 562b886..7f4738d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,4 @@
-#![cfg_attr(feature = "factory", feature(unboxed_closures, fn_traits, tuple_trait))]
+#![cfg_attr(feature = "factory", feature(unboxed_closures, tuple_trait))]
 #![cfg_attr(doc_cfg, feature(doc_cfg))]
 #![deny(clippy::all)]
 #![deny(clippy::pedantic)]
diff --git a/src/private/castable_factory/threadsafe.rs b/src/private/castable_factory/threadsafe.rs
index cb8a04b..6e608b1 100644
--- a/src/private/castable_factory/threadsafe.rs
+++ b/src/private/castable_factory/threadsafe.rs
@@ -11,7 +11,7 @@ where
     DIContainerT: 'static,
     ReturnInterface: 'static + ?Sized,
 {
-    func: &'static (dyn Fn<(Arc<DIContainerT>,), Output = TransientPtr<ReturnInterface>>
+    func: &'static (dyn Fn(Arc<DIContainerT>) -> TransientPtr<ReturnInterface>
                   + Send
                   + Sync),
 }
@@ -38,44 +38,9 @@ where
     DIContainerT: 'static,
     ReturnInterface: 'static + ?Sized,
 {
-}
-
-impl<ReturnInterface, DIContainerT> Fn<(Arc<DIContainerT>,)>
-    for ThreadsafeCastableFactory<ReturnInterface, DIContainerT>
-where
-    DIContainerT: 'static,
-    ReturnInterface: 'static + ?Sized,
-{
-    extern "rust-call" fn call(&self, args: (Arc<DIContainerT>,)) -> Self::Output
+    fn call(&self, di_container: Arc<DIContainerT>) -> TransientPtr<ReturnInterface>
     {
-        self.func.call(args)
-    }
-}
-
-impl<ReturnInterface, DIContainerT> FnMut<(Arc<DIContainerT>,)>
-    for ThreadsafeCastableFactory<ReturnInterface, DIContainerT>
-where
-    DIContainerT: 'static,
-    ReturnInterface: 'static + ?Sized,
-{
-    extern "rust-call" fn call_mut(&mut self, args: (Arc<DIContainerT>,))
-        -> Self::Output
-    {
-        self.call(args)
-    }
-}
-
-impl<ReturnInterface, DIContainerT> FnOnce<(Arc<DIContainerT>,)>
-    for ThreadsafeCastableFactory<ReturnInterface, DIContainerT>
-where
-    DIContainerT: 'static,
-    ReturnInterface: 'static + ?Sized,
-{
-    type Output = TransientPtr<ReturnInterface>;
-
-    extern "rust-call" fn call_once(self, args: (Arc<DIContainerT>,)) -> Self::Output
-    {
-        self.call(args)
+        (self.func)(di_container)
     }
 }
 
@@ -133,36 +98,8 @@ mod tests
 
         let mock_di_container = Arc::new(MockAsyncDIContainer::new());
 
-        let output = castable_factory.call((mock_di_container,));
+        let output = castable_factory.call(mock_di_container);
 
         assert_eq!(output, TransientPtr::new(Bacon { heal_amount: 27 }));
     }
-
-    #[test]
-    fn can_call_mut()
-    {
-        let mut castable_factory = ThreadsafeCastableFactory::new(&|_| {
-            TransientPtr::new(Bacon { heal_amount: 1092 })
-        });
-
-        let mock_di_container = Arc::new(MockAsyncDIContainer::new());
-
-        let output = castable_factory.call_mut((mock_di_container,));
-
-        assert_eq!(output, TransientPtr::new(Bacon { heal_amount: 1092 }));
-    }
-
-    #[test]
-    fn can_call_once()
-    {
-        let castable_factory = ThreadsafeCastableFactory::new(&|_| {
-            TransientPtr::new(Bacon { heal_amount: 547 })
-        });
-
-        let mock_di_container = Arc::new(MockAsyncDIContainer::new());
-
-        let output = castable_factory.call_once((mock_di_container,));
-
-        assert_eq!(output, TransientPtr::new(Bacon { heal_amount: 547 }));
-    }
 }
diff --git a/src/private/factory.rs b/src/private/factory.rs
index 730338f..c1672e1 100644
--- a/src/private/factory.rs
+++ b/src/private/factory.rs
@@ -15,9 +15,9 @@ where
 /// Interface for a threadsafe factory.
 #[cfg(feature = "async")]
 pub trait IThreadsafeFactory<ReturnInterface, DIContainerT>:
-    Fn<(Arc<DIContainerT>,), Output = TransientPtr<ReturnInterface>>
-    + crate::private::cast::CastFromArc
+    crate::private::cast::CastFromArc
 where
     ReturnInterface: 'static + ?Sized,
 {
+    fn call(&self, di_container: Arc<DIContainerT>) -> TransientPtr<ReturnInterface>;
 }