refactor!: remove repetition of declaring factory interfaces

BREAKING CHANGE: The to_default_factory method of the blocking and async DI containers now expect a function returning another function

2 files changed, 26 insertions, 13 deletions

diff --git a/src/async_di_container.rs b/src/async_di_container.rs
index c67900e..d90cc0b 100644
--- a/src/async_di_container.rs
+++ b/src/async_di_container.rs
@@ -78,7 +78,7 @@ use crate::provider::r#async::{
     AsyncTransientTypeProvider,
     IAsyncProvider,
 };
-use crate::ptr::{SomeThreadsafePtr, ThreadsafeSingletonPtr};
+use crate::ptr::{SomeThreadsafePtr, ThreadsafeSingletonPtr, TransientPtr};
 
 /// When configurator for a binding for type 'Interface' inside a [`AsyncDIContainer`].
 pub struct AsyncBindingWhenConfigurator<Interface>
@@ -361,8 +361,12 @@ where
     ) -> Result<AsyncBindingWhenConfigurator<Interface>, AsyncBindingBuilderError>
     where
         Return: 'static + ?Sized,
-        FactoryFunc: Fn<(Arc<AsyncDIContainer>,), Output = crate::ptr::TransientPtr<Return>>
-            + Send
+        FactoryFunc: Fn<
+                (Arc<AsyncDIContainer>,),
+                Output = Box<
+                    (dyn Fn<(), Output = crate::ptr::TransientPtr<Return>> + Send + Sync),
+                >,
+            > + Send
             + Sync,
     {
         let mut bindings_lock = self.di_container.bindings.lock().await;
@@ -531,7 +535,10 @@ impl AsyncDIContainer
                 use crate::interfaces::factory::IFactory;
 
                 let default_factory = default_factory_binding
-                    .cast::<dyn IFactory<(Arc<AsyncDIContainer>,), Interface>>()
+                    .cast::<dyn IFactory<
+                        (Arc<AsyncDIContainer>,),
+                        dyn Fn<(), Output = TransientPtr<Interface>> + Send + Sync,
+                    >>()
                     .map_err(|err| match err {
                         CastError::NotArcCastable(_) => {
                             AsyncDIContainerError::InterfaceNotAsync(
@@ -546,7 +553,7 @@ impl AsyncDIContainer
                         }
                     })?;
 
-                Ok(SomeThreadsafePtr::Transient(default_factory(self.clone())))
+                Ok(SomeThreadsafePtr::Transient(default_factory(self.clone())()))
             }
         }
     }
diff --git a/src/di_container.rs b/src/di_container.rs
index 2907969..45c3be8 100644
--- a/src/di_container.rs
+++ b/src/di_container.rs
@@ -71,7 +71,7 @@ use crate::provider::blocking::{
     SingletonProvider,
     TransientTypeProvider,
 };
-use crate::ptr::{SingletonPtr, SomePtr};
+use crate::ptr::{SingletonPtr, SomePtr, TransientPtr};
 
 /// When configurator for a binding for type 'Interface' inside a [`DIContainer`].
 pub struct BindingWhenConfigurator<Interface>
@@ -294,15 +294,18 @@ where
     /// Will return Err if the associated [`DIContainer`] already have a binding for
     /// the interface.
     #[cfg(feature = "factory")]
-    pub fn to_default_factory<Return>(
+    pub fn to_default_factory<Return, FactoryFunc>(
         &self,
-        factory_func: &'static dyn Fn<
-            (Rc<DIContainer>,),
-            Output = crate::ptr::TransientPtr<Return>,
-        >,
+        factory_func: &'static FactoryFunc,
     ) -> Result<BindingWhenConfigurator<Interface>, BindingBuilderError>
     where
         Return: 'static + ?Sized,
+        FactoryFunc: Fn<
+            (Rc<DIContainer>,),
+            Output = crate::ptr::TransientPtr<
+                dyn Fn<(), Output = crate::ptr::TransientPtr<Return>>,
+            >,
+        >,
     {
         {
             let bindings = self.di_container.bindings.borrow();
@@ -445,13 +448,16 @@ impl DIContainer
                 use crate::interfaces::factory::IFactory;
 
                 let default_factory = factory_binding
-                    .cast::<dyn IFactory<(Rc<DIContainer>,), Interface>>()
+                    .cast::<dyn IFactory<
+                        (Rc<DIContainer>,),
+                        dyn Fn<(), Output = TransientPtr<Interface>>,
+                    >>()
                     .map_err(|_| DIContainerError::CastFailed {
                         interface: type_name::<Interface>(),
                         binding_kind: "default factory",
                     })?;
 
-                Ok(SomePtr::Transient(default_factory(self.clone())))
+                Ok(SomePtr::Transient(default_factory(self.clone())()))
             }
         }
     }