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use futures::{Future, Poll};
use std::{fmt, mem};
use tokio_core::reactor::Handle;
use actor::{Actor, ActorContext, ActorState, AsyncContext, SpawnHandle, Supervised};
use address::{Addr, Syn, SyncAddressReceiver, Unsync};
use contextimpl::ContextImpl;
use fut::ActorFuture;
pub struct Context<A>
where
A: Actor<Context = Context<A>>,
{
inner: ContextImpl<A>,
}
impl<A> ActorContext for Context<A>
where
A: Actor<Context = Self>,
{
#[inline]
fn stop(&mut self) {
self.inner.stop()
}
#[inline]
fn terminate(&mut self) {
self.inner.terminate()
}
#[inline]
fn state(&self) -> ActorState {
self.inner.state()
}
}
impl<A> AsyncContext<A> for Context<A>
where
A: Actor<Context = Self>,
{
#[inline]
fn spawn<F>(&mut self, fut: F) -> SpawnHandle
where
F: ActorFuture<Item = (), Error = (), Actor = A> + 'static,
{
self.inner.spawn(fut)
}
#[inline]
fn wait<F>(&mut self, fut: F)
where
F: ActorFuture<Item = (), Error = (), Actor = A> + 'static,
{
self.inner.wait(fut)
}
#[inline]
fn waiting(&self) -> bool {
self.inner.waiting()
}
#[inline]
fn cancel_future(&mut self, handle: SpawnHandle) -> bool {
self.inner.cancel_future(handle)
}
#[doc(hidden)]
#[inline]
fn unsync_address(&mut self) -> Addr<Unsync, A> {
self.inner.unsync_address()
}
#[doc(hidden)]
#[inline]
fn sync_address(&mut self) -> Addr<Syn, A> {
self.inner.sync_address()
}
}
impl<A> Context<A>
where
A: Actor<Context = Self>,
{
pub fn handle(&self) -> SpawnHandle {
self.inner.curr_handle()
}
pub fn set_mailbox_capacity(&mut self, cap: usize) {
self.inner.set_mailbox_capacity(cap)
}
#[inline]
pub(crate) fn new(act: Option<A>) -> Context<A> {
Context {
inner: ContextImpl::new(act),
}
}
#[inline]
pub(crate) fn with_receiver(
act: Option<A>, rx: SyncAddressReceiver<A>
) -> Context<A> {
Context {
inner: ContextImpl::with_receiver(act, rx),
}
}
#[inline]
pub(crate) fn run(self, handle: &Handle) {
handle.spawn(self.map(|_| ()).map_err(|_| ()));
}
#[inline]
pub(crate) fn restart(&mut self) -> bool
where
A: Supervised,
{
let ctx: &mut Context<A> = unsafe { mem::transmute(self as &mut Context<A>) };
self.inner.restart(ctx)
}
#[inline]
pub(crate) fn set_actor(&mut self, act: A) {
self.inner.set_actor(act)
}
}
#[doc(hidden)]
impl<A> Future for Context<A>
where
A: Actor<Context = Self>,
{
type Item = ();
type Error = ();
#[inline]
fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
let ctx: &mut Context<A> = unsafe { mem::transmute(self as &mut Context<A>) };
self.inner.poll(ctx)
}
}
impl<A> fmt::Debug for Context<A>
where
A: Actor<Context = Self>,
{
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "Context({:?})", self as *const _)
}
}
pub trait ContextFutureSpawner<A>
where
A: Actor,
A::Context: AsyncContext<A>,
{
fn spawn(self, ctx: &mut A::Context);
fn wait(self, ctx: &mut A::Context);
}
impl<A, T> ContextFutureSpawner<A> for T
where
A: Actor,
A::Context: AsyncContext<A>,
T: ActorFuture<Item = (), Error = (), Actor = A> + 'static,
{
#[inline]
fn spawn(self, ctx: &mut A::Context) {
let _ = ctx.spawn(self);
}
#[inline]
fn wait(self, ctx: &mut A::Context) {
ctx.wait(self);
}
}