use std::any::Any;

/// A type which can be passed into a stateful handler.
///
/// # Trait Bounds
/// This trait is bound on `Send + Sync`, as well as `Clone`. Handler states are
/// cloned many times, and should be inexpensive to clone.
///
/// # Blanket Impl
/// This trait is blanket-impl'd on any type that meets the requirements. You do not need
/// to manually mark your state types with it.
pub trait HandlerState: Any + Send + Sync + Clone + 'static {}

impl<T> HandlerState for T where T: Send + Sync + Clone + 'static {}