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//! Scope configurator for a binding for types inside of a [`DIContainer`].
use std::marker::PhantomData;
use std::rc::Rc;
use crate::di_container::blocking::binding::when_configurator::BindingWhenConfigurator;
use crate::di_container::blocking::DIContainer;
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 [`DIContainer`].
pub struct BindingScopeConfigurator<Interface, Implementation>
where
Interface: 'static + ?Sized,
Implementation: Injectable,
{
di_container: Rc<DIContainer>,
interface_phantom: PhantomData<Interface>,
implementation_phantom: PhantomData<Implementation>,
}
impl<Interface, Implementation> BindingScopeConfigurator<Interface, Implementation>
where
Interface: 'static + ?Sized,
Implementation: Injectable,
{
pub(crate) fn new(di_container: Rc<DIContainer>) -> 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>
{
let mut bindings_mut = self.di_container.bindings.borrow_mut();
bindings_mut.set::<Interface>(
None,
Box::new(TransientTypeProvider::<Implementation>::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>, BindingScopeConfiguratorError>
{
let singleton: SingletonPtr<Implementation> = SingletonPtr::from(
Implementation::resolve(&self.di_container, Vec::new())
.map_err(BindingScopeConfiguratorError::SingletonResolveFailed)?,
);
let mut bindings_mut = self.di_container.bindings.borrow_mut();
bindings_mut.set::<Interface>(None, Box::new(SingletonProvider::new(singleton)));
Ok(BindingWhenConfigurator::new(self.di_container.clone()))
}
}
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