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%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2017-2018. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
-module(generic_statem_complex).
-export([start/1, reply/2, stop/1]).
-export([callback_mode/0, init/1]).
-export([state1/3, state2/3, state3/3]).
-behaviour(gen_statem).
%% API
start(Data) ->
{ok, Pid} = gen_statem:start(?MODULE, Data, []),
Pid.
stop(P) ->
ok = gen_statem:stop(P).
reply(S, M) ->
gen_statem:call(S, {reply, M}, infinity).
%% Implementation
callback_mode() ->
[state_functions,state_enter].
init(Data) ->
{ok, state1, Data}.
state1(enter, _, Data) ->
{keep_state, Data,
{state_timeout, 5000, t1}};
state1({call, _From}, {reply, _M}, Data) ->
{next_state, state2, Data,
[postpone,{next_event,internal,e}]}.
state2(enter, _, _Data) ->
keep_state_and_data;
state2(internal, e, Data) ->
{next_state, state3, Data}.
state3(enter, _, Data) ->
{keep_state, Data,
{state_timeout, 5000, t3}};
state3({call, From}, {reply, M}, Data) ->
{next_state, state1, Data,
{reply, From, M}}.
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