41 lines
1.0 KiB
C++
41 lines
1.0 KiB
C++
#pragma once
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#include <array>
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#include <functional>
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#include <memory>
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#include <sp/common/Tuples.h>
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namespace sp {
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template <typename TBase, typename TTMessages>
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class MessageFactory {
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public:
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using IdType = typename TBase::MessageIdType;
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using MessageBaseType = TBase;
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MessageFactory() {
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constexpr std::size_t messageCount = std::tuple_size_v<TTMessages>;
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m_Factory.resize(messageCount);
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TupleForEach([this](const auto& message){
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std::size_t messageID = static_cast<std::size_t>(message.GetId());
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using MessageType = std::decay_t<decltype(message)>;
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m_Factory.emplace(m_Factory.begin() + messageID, []() -> std::unique_ptr<TBase> { return std::make_unique<MessageType>(); });
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}, TTMessages{});
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}
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std::unique_ptr<TBase> CreateMessage(IdType id) const {
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std::size_t idSize = static_cast<std::size_t>(id);
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if (idSize >= m_Factory.size())
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return nullptr;
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return m_Factory.at(idSize)();
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}
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private:
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std::vector<std::function<std::unique_ptr<TBase>(void)>> m_Factory;
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};
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} // namespace sp
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