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dispatch_policy.cpp
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85 lines (77 loc) · 2.53 KB
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//
// Copyright (c) 2016-2020 Kris Jusiak (kris at jusiak dot net)
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
#include <boost/sml.hpp>
#include <cstdio>
namespace sml = boost::sml;
struct connect {};
struct established {};
struct ping {};
struct disconnect {};
struct timeout {};
// clang-format off
struct dispatch_policy {
auto operator()() const {
const auto establish = []{ std::puts("establish"); };
const auto close = []{ std::puts("close"); };
const auto is_valid = [](auto const&) { return true; };
const auto reset_timeout = []{ std::puts("reset_timeout"); };
using namespace sml;
return make_transition_table(
* "Disconnected"_s + event<connect> / establish = "Connecting"_s,
"Connecting"_s + event<established> = "Connected"_s,
"Connected"_s + event<ping> [ is_valid ] / reset_timeout,
"Connected"_s + event<timeout> / establish = "Connecting"_s,
"Connected"_s + event<disconnect> / close = "Disconnected"_s
);
}
};
// clang-format on
int main() {
{
sml::sm<dispatch_policy, sml::dispatch<sml::back::policies::jump_table>> sm{};
sm.process_event(connect{});
sm.process_event(established{});
sm.process_event(ping{});
sm.process_event(disconnect{});
sm.process_event(connect{});
sm.process_event(established{});
sm.process_event(ping{});
}
{
sml::sm<dispatch_policy, sml::dispatch<sml::back::policies::branch_stm>> sm{};
sm.process_event(connect{});
sm.process_event(established{});
sm.process_event(ping{});
sm.process_event(disconnect{});
sm.process_event(connect{});
sm.process_event(established{});
sm.process_event(ping{});
}
{
sml::sm<dispatch_policy, sml::dispatch<sml::back::policies::switch_stm>> sm{};
sm.process_event(connect{});
sm.process_event(established{});
sm.process_event(ping{});
sm.process_event(disconnect{});
sm.process_event(connect{});
sm.process_event(established{});
sm.process_event(ping{});
}
#if defined(__cpp_fold_expressions)
{
sml::sm<dispatch_policy, sml::dispatch<sml::back::policies::fold_expr>> sm{};
sm.process_event(connect{});
sm.process_event(established{});
sm.process_event(ping{});
sm.process_event(disconnect{});
sm.process_event(connect{});
sm.process_event(established{});
sm.process_event(ping{});
}
#endif
}