state_machine_future 0.2.0

Easily create type-safe `Future`s from state machines — without the boilerplate.
Documentation 
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//! Test that the generated code has the right transition types.

extern crate futures;
#[macro_use]
extern crate state_machine_future;

use futures::Poll;
use state_machine_future::RentToOwn;

pub struct MyReady;
pub struct MyError;

#[derive(StateMachineFuture)]
pub enum Fsm {
    #[state_machine_future(start)]
    #[state_machine_future(transitions(Middle, End))]
    Begin,

    #[state_machine_future(transitions(End))]
    Middle(()),

    #[state_machine_future(ready)]
    #[state_machine_future(error)]
    End(()),
}

pub fn check_begin_transitions(x: AfterBegin) {
    match x {
        AfterBegin::Middle(Middle(())) | AfterBegin::End(End(())) => unimplemented!(),
    }
}

pub fn check_middle_transitions(x: AfterMiddle) {
    match x {
        AfterMiddle::End(End(())) => unimplemented!(),
    }
}

impl PollFsm for Fsm {
    fn poll_begin<'a>(_: &'a mut RentToOwn<'a, Begin>) -> Poll<AfterBegin, ()> {
        unimplemented!()
    }

    fn poll_middle<'a>(_: &'a mut RentToOwn<'a, Middle>) -> Poll<AfterMiddle, ()> {
        unimplemented!()
    }
}