Macro sfsm::add_messages

add_messages!() { /* proc-macro */ }

Generates code to push messages into states or poll messages from states.

The messaging definition is expected too hold to the following pattern:

add_messages!(
    StateMachineName,
    [
        Message1 <- State1,
        Message2 <- State1,
        Message1 -> State2,
        ...
    ]
);

• StateMachineName: This must match a previously with add_state_machine defined state machine.
• [ Message1 <- State1, … ] Defines all messages that can be passed back an forth. The message specifies the struct/enum that will be used as a message, the <- arrow defines a poll and the -> a push and the state is the target or source state. For each message, the source/target state must implement the according ReceiveMessage or ReturnMessage trait. An example might look like this.

struct Liftoff {}
struct Land {}
struct Command<T> {}
struct Status { height: float32, speed: float32}
add_messages!(
        Rocket,
        [
            Command<Liftoff> -> Move<Down>,
            Command<Land> -> Move<Up>,
            Status <- Move<Up>
            Status <- Move<Down>
        ]
);