pEp.foundation
/
pEpEngine


								// This file is under GNU General Public License 3.0

								// see LICENSE.txt


								// FSM Y language 1.2


								// Copyleft (c) 2016, 2017, p≡p foundation


								// Written by Volker Birk


								decl version(major, minor);


								// a protocol family has a name and an ID


								decl protocol @name (id, threshold=10);


								// each protocol in a family has a finite state machine


								decl fsm @name (id, threshold=10);


								// a state has a name and a timeout; after the timeout the state machine will

								// be reset


								decl state @name (timeout=on);


								// events have names


								decl event @name, on is event;


								// external events can have IDs


								decl external @name (id);


								// a transistion moves the statemachine to another state


								decl transition @target, go is transition;


								// an action is executed; if an action name starts with 'send' then it is

								// sending a message


								decl action @name, do is action;


								// send network messages


								decl send @name;


								// a condition is for different cases


								decl condition @name, if is condition;

								decl else;


								// some events have messages on the line signalling the event to the

								// communication partner; the rate limit is in seconds until such a mesage can

								// be repeated, 0 means off


								decl message @name (id, type=anycast, security=trusted, ratelimit=0);


								// messages can have transmitted fields…


								decl field @type @name;


								// … or automatically calculated fields…


								decl auto < field >;


								// … or list of fields


								decl list < field >;


								// emped message from other state machine


								decl embed @protocol @type @name;