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//! Scope configurator for a binding for types inside of a [`IDIContainer`].
//!
//! [`IDIContainer`]: crate::di_container::blocking::IDIContainer
use std::marker::PhantomData;
use std::rc::Rc;
use crate::di_container::blocking::binding::when_configurator::BindingWhenConfigurator;
use crate::di_container::blocking::IDIContainer;
use crate::errors::di_container::BindingScopeConfiguratorError;
use crate::interfaces::injectable::Injectable;
use crate::provider::blocking::{SingletonProvider, TransientTypeProvider};
use crate::ptr::SingletonPtr;
/// Scope configurator for a binding for type 'Interface' inside a [`IDIContainer`].
///
/// [`IDIContainer`]: crate::di_container::blocking::IDIContainer
pub struct BindingScopeConfigurator<Interface, Implementation, DIContainerType>
where
Interface: 'static + ?Sized,
Implementation: Injectable<DIContainerType>,
DIContainerType: IDIContainer,
{
di_container: Rc<DIContainerType>,
interface_phantom: PhantomData<Interface>,
implementation_phantom: PhantomData<Implementation>,
}
impl<Interface, Implementation, DIContainerType>
BindingScopeConfigurator<Interface, Implementation, DIContainerType>
where
Interface: 'static + ?Sized,
Implementation: Injectable<DIContainerType>,
DIContainerType: IDIContainer,
{
pub(crate) fn new(di_container: Rc<DIContainerType>) -> Self
{
Self {
di_container,
interface_phantom: PhantomData,
implementation_phantom: PhantomData,
}
}
/// Configures the binding to be in a transient scope.
///
/// This is the default.
#[allow(clippy::must_use_candidate)]
pub fn in_transient_scope(
&self,
) -> BindingWhenConfigurator<Interface, DIContainerType>
{
self.di_container.set_binding::<Interface>(
None,
Box::new(TransientTypeProvider::<Implementation, DIContainerType>::new()),
);
BindingWhenConfigurator::new(self.di_container.clone())
}
/// Configures the binding to be in a singleton scope.
///
/// # Errors
/// Will return Err if resolving the implementation fails.
pub fn in_singleton_scope(
&self,
) -> Result<
BindingWhenConfigurator<Interface, DIContainerType>,
BindingScopeConfiguratorError,
>
{
let singleton: SingletonPtr<Implementation> = SingletonPtr::from(
Implementation::resolve(&self.di_container, Vec::new())
.map_err(BindingScopeConfiguratorError::SingletonResolveFailed)?,
);
self.di_container
.set_binding::<Interface>(None, Box::new(SingletonProvider::new(singleton)));
Ok(BindingWhenConfigurator::new(self.di_container.clone()))
}
}
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