Struct BootstrapDispatcherRegistration 

pub struct BootstrapDispatcherRegistration {
    pub type_name: &'static str,
    pub register_fn: fn(&mut Engine),
}

Per-concrete inventory carrying a per-T Bootstrap dispatcher- registration fn pointer. The #[derive(bb::Concrete)] macro emits one of these per registered concrete so the install path can register every concrete’s Bootstrap dispatcher without the per-T downcast. Pairs with crate::engine::Engine::register_bootstrap_dispatcher.

The derive’s emitted impl falls back to the crate::contracts::bootstrap::Bootstrap trait default (no-op), so a Concrete with no manual impl Bootstrap still registers a dispatcher entry that drains the Component bootstrap phase cleanly. Authors override the default by hand-writing impl Bootstrap for X alongside the derive — the derive’s #[bb(bootstrap_override)] attribute (parsed in bb-derive::parse) suppresses the default-impl emission so the two impls do not collide.

Fields

type_name: &'static str

ConcreteComponent::TYPE_NAME — the join key against ConcreteComponentRegistration.

register_fn: fn(&mut Engine)

Per-T registration callback. The derive captures T at the emit site and the fn body calls engine.register_bootstrap_dispatcher::<T>().

Trait Implementations

impl Collect for BootstrapDispatcherRegistration