This chapter explains how you implement the states. For the state lifecycle see the second chapter.

machinae is designed to be as lightweight as possible. To achieve that, the States in the state machine are strongly typed (in lieu of using trait objects). That means that your state is likely to be an enum. However, for some scenarios you need many different states; that can get quite confusing if you have to match your enum in every method. Because of that, there's a second way to work with this crate: you just create multiple structs and implement DynState for each struct. Every Box<DynState> has an implementation for State automatically.

• Use an enum for your State
• Check out DynState instead

In case your argument to the states is a reference, there are some things you need pay attention to. Chapter 1.3 describes how to do that.