diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/di_container.rs | 52 | ||||
| -rw-r--r-- | src/di_container_binding_map.rs | 12 | ||||
| -rw-r--r-- | src/lib.rs | 2 |
3 files changed, 52 insertions, 14 deletions
diff --git a/src/di_container.rs b/src/di_container.rs index e15d921..c33d339 100644 --- a/src/di_container.rs +++ b/src/di_container.rs @@ -92,20 +92,33 @@ where /// Creates a binding of type `Interface` to type `Implementation` inside of the /// associated [`DIContainer`]. - pub fn to<Implementation>(&mut self) + /// + /// # Errors + /// Will return Err if the associated [`DIContainer`] already have a binding for + /// the interface. + pub fn to<Implementation>(&mut self) -> error_stack::Result<(), BindingBuilderError> where Implementation: Injectable, { self.di_container .bindings - .set::<Interface>(Box::new(TransientTypeProvider::<Implementation>::new())); + .set::<Interface>(Box::new(TransientTypeProvider::<Implementation>::new())) + .ok_or_else(|| { + report!(BindingBuilderError).attach_printable(format!( + "Binding already exists for interface '{}'", + type_name::<Interface>() + )) + })?; + + Ok(()) } /// Creates a binding of type `Interface` to a new singleton of type `Implementation` /// inside of the associated [`DIContainer`]. /// /// # Errors - /// Will return Err if creating the singleton fails. + /// Will return Err if creating the singleton fails or if the + /// associated [`DIContainer`] already have a binding for the interface. pub fn to_singleton<Implementation>( &mut self, ) -> error_stack::Result<(), BindingBuilderError> @@ -119,7 +132,13 @@ where self.di_container .bindings - .set::<Interface>(Box::new(SingletonProvider::new(singleton))); + .set::<Interface>(Box::new(SingletonProvider::new(singleton))) + .ok_or_else(|| { + report!(BindingBuilderError).attach_printable(format!( + "Binding already exists for interface '{}'", + type_name::<Interface>() + )) + })?; Ok(()) } @@ -128,22 +147,35 @@ where /// associated [`DIContainer`]. /// /// *This function is only available if Syrette is built with the "factory" feature.* + /// + /// # Errors + /// Will return Err if the associated [`DIContainer`] already have a binding for + /// the interface. #[cfg(feature = "factory")] pub fn to_factory<Args, Return>( &mut self, factory_func: &'static dyn Fn<Args, Output = TransientPtr<Return>>, - ) where + ) -> error_stack::Result<(), BindingBuilderError> + where Args: 'static, Return: 'static + ?Sized, Interface: crate::interfaces::factory::IFactory<Args, Return>, { let factory_impl = CastableFactory::new(factory_func); - self.di_container.bindings.set::<Interface>(Box::new( - crate::provider::FactoryProvider::new(crate::ptr::FactoryPtr::new( - factory_impl, - )), - )); + self.di_container + .bindings + .set::<Interface>(Box::new(crate::provider::FactoryProvider::new( + crate::ptr::FactoryPtr::new(factory_impl), + ))) + .ok_or_else(|| { + report!(BindingBuilderError).attach_printable(format!( + "Binding already exists for interface '{}'", + type_name::<Interface>() + )) + })?; + + Ok(()) } } diff --git a/src/di_container_binding_map.rs b/src/di_container_binding_map.rs index b505321..fee33b0 100644 --- a/src/di_container_binding_map.rs +++ b/src/di_container_binding_map.rs @@ -30,23 +30,29 @@ impl DIContainerBindingMap .get(&interface_typeid) .ok_or_else(|| { report!(DIContainerError).attach_printable(format!( - "No binding exists for {}", + "No binding exists for interface '{}'", type_name::<Interface>() )) })? .as_ref()) } - pub fn set<Interface>(&mut self, provider: Box<dyn IProvider>) + pub fn set<Interface>(&mut self, provider: Box<dyn IProvider>) -> Option<()> where Interface: 'static + ?Sized, { let interface_typeid = TypeId::of::<Interface>(); + if self.bindings.contains_key(&interface_typeid) { + return None; + } + self.bindings.insert(interface_typeid, provider); + + Some(()) } - /// Only used by tests in the ``di_container`` module. + /// Only used by tests in the `di_container` module. #[cfg(test)] pub fn count(&self) -> usize { @@ -40,7 +40,7 @@ mod provider; #[macro_export] macro_rules! di_container_bind { ($interface: path => $implementation: ty, $di_container: ident) => { - $di_container.bind::<dyn $interface>().to::<$implementation>(); + $di_container.bind::<dyn $interface>().to::<$implementation>().unwrap(); syrette::declare_interface!($implementation -> $interface); }; |