eirc 0.0.0

Event-based/Extensible Internet Relay Chat library.
Documentation 
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pub trait RwLockEvent<T: ::eventbus::Event> {
  fn metadata_lock() -> &'static ::std::sync::RwLock<::eventbus::EventMetadata<T>>;
}

macro_rules! rwlock_event {
  ($t:ty) => (
    impl $crate::macros::event::RwLockEvent<$t> for $t {
      fn metadata_lock() -> &'static ::std::sync::RwLock<$crate::eventbus::EventMetadata<$t>> {
        // TODO test whether this actually works
        lazy_static! {
          static ref EVENT_METADATA: ::std::sync::RwLock<$crate::eventbus::EventMetadata<$t>> = ::std::sync::RwLock::new($crate::eventbus::EventMetadata::new());
        }
        &EVENT_METADATA
      }
    }
    impl Event for $t {
      fn event_metadata<F, R>(f: F) -> R where F: FnOnce(&$crate::eventbus::EventMetadata<Self>) -> R {
        f(&<Self as $crate::macros::event::RwLockEvent<$t>>::metadata_lock().read().unwrap())
      }
      fn mut_metadata<F, R>(f: F) -> R where F: FnOnce(&mut $crate::eventbus::EventMetadata<Self>) -> R {
        f(&mut <Self as $crate::macros::event::RwLockEvent<$t>>::metadata_lock().write().unwrap())
      }
    }
  );

  ($t:ty, $f:ident) => (
    impl $crate::macros::event::RwLockEvent<$t> for $t {
      fn metadata_lock() -> &'static ::std::sync::RwLock<$crate::eventbus::EventMetadata<$t>> {
        // TODO test whether this actually works
        lazy_static! {
          static ref EVENT_METADATA: ::std::sync::RwLock<$crate::eventbus::EventMetadata<$t>> = ::std::sync::RwLock::new($crate::eventbus::EventMetadata::new());
        }
        &EVENT_METADATA
      }
    }
    impl Event for $t {
      fn event_metadata<F, R>(f: F) -> R where F: FnOnce(&$crate::eventbus::EventMetadata<Self>) -> R {
        f(&<Self as $crate::macros::event::RwLockEvent<$t>>::metadata_lock().read().unwrap())
      }
      fn mut_metadata<F, R>(f: F) -> R where F: FnOnce(&mut $crate::eventbus::EventMetadata<Self>) -> R {
        f(&mut <Self as $crate::macros::event::RwLockEvent<$t>>::metadata_lock().write().unwrap())
      }
      fn cancellable() -> bool { true }
      fn cancelled(&self) -> bool { self.$f }
      fn cancel(&mut self, cancelled: bool) { self.$f = cancelled }
    }
  );
}