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sdk.hpp
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sdk.hpp
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/*
* Copyright (C) 2020 Tusooa Zhu
*
* This file is part of libkazv.
*
* libkazv is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* libkazv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with libkazv. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include <lager/store.hpp>
#include "sdk-model.hpp"
#include "client.hpp"
namespace Kazv
{
namespace detail
{
// emulates declval() but returns lvalue reference
template<class T>
typename std::add_lvalue_reference<T>::type declref() noexcept;
}
template<class EventLoop, class Xform, class ...Enhancers>
class Sdk
{
using ModelT = ::Kazv::SdkModel;
using ClientT = ::Kazv::ClientModel;
using ActionT = typename ModelT::Action;
using StoreT = decltype(
lager::make_store<ActionT>(
std::declval<ModelT>(),
&ModelT::update,
std::declval<EventLoop>(),
lager::with_deps(
std::ref(detail::declref<JobInterface>()),
std::ref(detail::declref<EventInterface>())
),
std::declval<Enhancers>()...)
);
using ContextT = lager::context<ActionT>;
public:
Sdk(ModelT model,
JobInterface &jobHandler,
EventInterface &eventEmitter,
EventLoop &&eventLoop,
Xform &&xform,
Enhancers &&...enhancers)
: m_store(lager::make_store<ActionT>(
std::move(model),
&ModelT::update,
std::forward<EventLoop>(eventLoop),
lager::with_deps(
std::ref(jobHandler),
std::ref(eventEmitter)),
std::forward<Enhancers>(enhancers)...))
, m_sdk(m_store.xform(std::forward<Xform>(xform)))
, m_client(m_sdk[&ModelT::client]) {}
ContextT context() const {
return m_store;
}
Client client() const {
return {m_client, m_store};
}
private:
StoreT m_store;
lager::reader<ModelT> m_sdk;
lager::reader<ClientT> m_client;
};
template<class EventLoop, class Xform, class ...Enhancers>
inline auto makeSdk(SdkModel sdk,
JobInterface &jobHandler,
EventInterface &eventEmitter,
EventLoop &&eventLoop,
Xform &&xform,
Enhancers &&...enhancers)
-> Sdk<EventLoop, Xform, Enhancers...>
{
return { std::move(sdk),
jobHandler,
eventEmitter,
std::forward<EventLoop>(eventLoop),
std::forward<Xform>(xform),
std::forward<Enhancers>(enhancers)... };
}
}

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