Trait Extension

pub trait Extension:
    Serialize
    + DeserializeOwned
    + Clone {
    type Forks: IsForks;

    // Required methods
    fn get<T: 'static>(&self) -> Option<&T>;
    fn get_any(&self, t: TypeId) -> &dyn Any;
    fn get_any_mut(&mut self, t: TypeId) -> &mut dyn Any;

    // Provided method
    fn forks<BlockNumber, T>(&self) -> Option<Forks<BlockNumber, T>>
       where BlockNumber: Ord + Clone + 'static,
             T: Group + 'static,
             <Self::Forks as IsForks>::Extension: Extension,
             <<Self::Forks as IsForks>::Extension as Group>::Fork: Extension { ... }
}

A collection of ChainSpec extensions.

This type can be passed around and allows the core modules to request a strongly-typed, but optional configuration.

Required Associated Types

type Forks: IsForks

Required Methods

fn get<T: 'static>(&self) -> Option<&T>

Get an extension of specific type.

fn get_any(&self, t: TypeId) -> &dyn Any

Get an extension of specific type as reference to Any.

fn get_any_mut(&mut self, t: TypeId) -> &mut dyn Any

Get an extension of specific type as mutable reference to Any.

Provided Methods

fn forks<BlockNumber, T>(&self) -> Option<Forks<BlockNumber, T>>

where BlockNumber: Ord + Clone + 'static, T: Group + 'static, <Self::Forks as IsForks>::Extension: Extension, <<Self::Forks as IsForks>::Extension as Group>::Fork: Extension,

Get forkable extensions of specific type.

Object Safety

This trait is not object safe.

Implementors

impl Extension for NoExtension

type Forks = Option<()>

impl<B, E> Extension for Forks<B, E>

where B: Serialize + DeserializeOwned + Ord + Clone + 'static, E: Extension + Group + 'static,

type Forks = Forks<B, E>