use teloc::*;
// Declare your structs
struct ConstService {
number: i32,
}
// #[inject] macro is indicate that dependency can be constructed using this
// function
#[inject]
impl ConstService {
pub fn new(number: i32) -> Self {
ConstService { number }
}
}
// Derive macro can be used when all fields implement `Dependency` trait, but
// we recommend using the #[inject] macro it in production code instead.
#[derive(Dependency)]
struct Controller {
number_service: ConstService,
}
fn main() {
// Create `ServiceProvider` struct that store itself all dependencies
let sp = ServiceProvider::new()
// Add dependency with `Singleton` lifetime. More about lifetimes see above.
.add_singleton::<ConstService>()
// Add dependency with `Transient` lifetime. More about lifetimes see above.
.add_transient::<Controller>()
.add_instance(10);
// Fork `ServiceProvider`. It creates a new `ServiceProvider` which will have
// access to the dependencies from parent `ServiceProvider`.
let scope = sp
// .fork() method creates a local mutable scope with self parent immutable `ServiceProvider`.
.fork()
// Add an instance of `i32` that will be used when `ConstService` will be initialized.
.add_instance(10);
// Get dependency from `ServiceProvider`
let controller: Controller = scope.resolve(); // fails here on resolve()
assert_eq!(controller.number_service.number, 10);
}the trait bound `teloc::ServiceProvider<&teloc::ServiceProvider<teloc::service_provider::EmptyServiceProvider, HCons<InstanceContainer<{integer}>, HCons<TransientContainer<Controller>, HCons<SingletonContainer<ConstService>, HNil>>>>, HCons<InstanceContainer<{integer}>, HNil>>: teloc::Resolver<'_, _, ConstService, _>` is not satisfied
required because of the requirements on the impl of `GetDependencies<'_, HCons<ConstService, HNil>, HCons<(_, _), HNil>>` for `teloc::ServiceProvider<&teloc::ServiceProvider<teloc::service_provider::EmptyServiceProvider, HCons<InstanceContainer<{integer}>, HCons<TransientContainer<Controller>, HCons<SingletonContainer<ConstService>, HNil>>>>, HCons<InstanceContainer<{integer}>, HNil>>`
required because of the requirements on the impl of `teloc::Resolver<'_, TransientContainer<Controller>, Controller, (teloc::index::ParentIndex<teloc::index::SelfIndex<There<Here>>>, HCons<ConstService, HNil>, HCons<(_, _), HNil>)>` for `teloc::ServiceProvider<&teloc::ServiceProvider<teloc::service_provider::EmptyServiceProvider, HCons<InstanceContainer<{integer}>, HCons<TransientContainer<Controller>, HCons<SingletonContainer<ConstService>, HNil>>>>, HCons<InstanceContainer<{integer}>, HNil>>`rustc[E0277](https://doc.rust-lang.org/error-index.html#E0277)
❯ rustc --version
rustc 1.58.1 (db9d1b20b 2022-01-20)
Produces: