A header-only library to generate small and efficient state machines.
Wikipedia has a fairly good description of state machines. This library lets you generate state machines at compile time with some template magic.
Currently, functionality is a bit limited. Hierarchically nested states, orthogonal regions, and event deferral are not yet implemented. But basic concepts are there: states, events, extended states, guard conditions, transition actions, run-to-completion, and entry/exit actions.
In general, you will need to define states, events, actions, and guards.
The library will take care of creating the transition table, state machine, and
handling all the different transitions between states -- all you have to do is
call process_event!
Note that in this library, an action is a Callable that returns the destination state. The reasoning for this is to encapsulate extended state, but allow transfer between states (e.g. moving a buffer from a 'read' state to a 'process' state).
Check out the examples.
In order to build the examples, you'll need a compiler supporting C++14 and CMake or Bazel.
Google Test is required to run the tests and is included as a submodule. Make sure to initialize it after cloning this repo.