ecoro.erl
Pseudo-coroutines library like Lua-coroutines for Erlang.
Examples
Simple
%% create coroutine
Coro = ecoro:start(fun(State0) ->
io:format("~p~n", [State0]),
State1 = ecoro:yield(State0 + 1),
io:format("~p~n", [State1]),
State2 = ecoro:yield(State1 + 1),
io:format("~p~n", [State2]),
State2 + 1
end),
%% start coroutine (print 0 and return true because coro is alive)
{true, State1 = 1} = ecoro:resume(Coro, 0),
%% resume coroutine (print 1)
{true, State2 = 2} = ecoro:resume(Coro, State1),
%% resume coroutine (print 2 and return false because coro is ended)
{false, _State3 = 3} = ecoro:resume(Coro, State2).
Error handling
%% create bad coroutine
Coro = ecoro:start(fun() ->
io:format("1~n"),
ecoro:yield(),
erlang:throw(some_throw_reason)
end),
%% start coroutine (print 1 and return true because coro is alive)
{true, _} = ecoro:resume(Coro),
%% resume coroutine (return error with throw reason)
{error, {throw, some_throw_reason}} = ecoro:resume(Coro).