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//! When configurator for a binding for types inside of a [`AsyncDIContainer`].
use std::any::type_name;
use std::marker::PhantomData;
use std::sync::Arc;
use crate::errors::async_di_container::AsyncBindingWhenConfiguratorError;
use crate::AsyncDIContainer;
/// When configurator for a binding for type 'Interface' inside a [`AsyncDIContainer`].
pub struct AsyncBindingWhenConfigurator<Interface>
where
Interface: 'static + ?Sized + Send + Sync,
{
di_container: Arc<AsyncDIContainer>,
interface_phantom: PhantomData<Interface>,
}
impl<Interface> AsyncBindingWhenConfigurator<Interface>
where
Interface: 'static + ?Sized + Send + Sync,
{
pub(crate) fn new(di_container: Arc<AsyncDIContainer>) -> Self
{
Self {
di_container,
interface_phantom: PhantomData,
}
}
/// Configures the binding to have a name.
///
/// # Errors
/// Will return Err if no binding for the interface already exists.
pub async fn when_named(
&self,
name: &'static str,
) -> Result<(), AsyncBindingWhenConfiguratorError>
{
let mut bindings_lock = self.di_container.bindings.lock().await;
let binding = bindings_lock.remove::<Interface>(None).map_or_else(
|| {
Err(AsyncBindingWhenConfiguratorError::BindingNotFound(
type_name::<Interface>(),
))
},
Ok,
)?;
bindings_lock.set::<Interface>(Some(name), binding);
Ok(())
}
}
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