Derive Macro portaldi::DIPortal

#[derive(DIPortal)]
{
    // Attributes available to this derive:
    #[provide]
    #[inject]
}

Generate a DIPortal or [AsyncDIPortal] implementation. (derive macro)

• provide: generate [DIProvider] implementation for a specified trait.

  #[derive(DIPortal)]
  #[provide(HogeI)] // HogeIProvider will be generated.
  struct Hoge {
    foo: DI<dyn FooI>  // needs FooIProvider in the current scope.
  }

• inject: specify DI settings for a field.

  #[derive(DIPortal)]
  struct Hoge {
    #[inject(Foo)]  // specify concrete type
    foo: DI<dyn FooI>,
    #[inject(AsyncFoo, async)]  // specify concrete type that needs async creation,
                                // and consequently AsyncDIPortal for Hoge will be generated.
    foo2: DI<dyn FooI>,
    #[inject(async)]  // Bar nedds async creation,
                      // and consequently AsyncDIPortal for Hoge will be generated.
    bar: DI<Bar>,
    #[inject(MyBazProvider)] // specify DI provider for a another crate concrete type.
    baz: DI<Baz>,
    #[inject(with_provider)] // specify DI provider for a another crate concrete type (short hand notation).
    baz2: DI<Baz>,
  }