// generate state machine code

// Copyleft (c) 2016, p≡p foundation

// Written by Volker Birk

include yslt.yml2

tstylesheet {

    template "/protocol/fsm"

    ||

    // state machine for «@name»

    #include "pEpEngine.h"

    typedef enum _fsm_error {

        invalid_state = -1,

        invalid_event = -2

    } fsm_error;

    typedef enum _«@name»_state {

    `` for "set:distinct(state/@name)" |> «.»`if "position()!=last()" > , `

    } «@name»_state;

    typedef enum _«@name»_event {

    `` for "set:distinct(state/event/@name)" |> «.»`if "position()!=last()" > , `

    } «@name»_event;

    «@name»_state fsm_«@name»(«@name»_state state, «@name»_event event)

    {

        switch (state) {

            `` apply "state"

            default:

                return invalid_state;

        }

    }

    ||

    template "state"

    ||

    case «@name»:

        switch (event) {

        `` apply "event", 2

        default:

            return invalid_event;

        }

        break;

    ||

    template "event"

    ||

    case «@name»:

    `` apply "action|transition";

    `` if "1" |> break;

    ||

    template "action" | «@name»();

    template "transition" | return «@target»;

}