66 lines
1.6 KiB
C++
66 lines
1.6 KiB
C++
#pragma once
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namespace sp {
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namespace option {
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// Provide static numeric ID, to facilitate implementation of GetIdImpl()
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template <std::uintmax_t TId>
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struct StaticNumIdImpl {};
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// Facilitate implementation of DispatchImpl()
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template <typename TActual>
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struct DispatchImpl {};
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// Provide fields of the message, facilitate implementation of
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// ReadImpl(), WriteImpl(), ValidImpl(), etc...
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template <typename TFields>
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struct FieldsImpl {};
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// Print fields of the message, facilitate implementation of
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// ToStringImpl()
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template <typename TActual>
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struct ToStringImpl {};
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} // namespace option
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namespace details {
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template <typename... TOptions>
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class MessageImplParsedOptions;
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template <>
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struct MessageImplParsedOptions<> {
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static const bool HasStaticNumIdImpl = false;
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static const bool HasDispatchImpl = false;
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static const bool HasFieldsImpl = false;
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};
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template <std::uintmax_t TId, typename... TOptions>
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struct MessageImplParsedOptions<option::StaticNumIdImpl<TId>, TOptions...> : public MessageImplParsedOptions<TOptions...> {
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static const bool HasStaticNumIdImpl = true;
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static const std::uintmax_t MsgId = TId;
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};
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template <typename TActual, typename... TOptions>
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struct MessageImplParsedOptions<option::DispatchImpl<TActual>, TOptions...> : public MessageImplParsedOptions<TOptions...> {
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static const bool HasDispatchImpl = true;
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using ActualMessage = TActual;
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};
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template <typename TFields, typename... TOptions>
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struct MessageImplParsedOptions<option::FieldsImpl<TFields>, TOptions...> : public MessageImplParsedOptions<TOptions...> {
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static const bool HasFieldsImpl = true;
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using Fields = TFields;
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};
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} // namespace details
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} // namespace sp
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