Files
lix/lix/libstore/worker-protocol-impl.hh
T
eldritch horrors 4ebf79bc19 libstore: associate wire connection states with stores
why pass the stores as a distinct argument every time?

Change-Id: If529a49541483e8a3d33eb2b3532d66b3bb9738d
2025-06-06 18:09:46 +02:00

61 lines
1.7 KiB
C++

#pragma once
/**
* @file
*
* Template implementations (as opposed to mere declarations).
*
* This file is an exmample of the "impl.hh" pattern. See the
* contributing guide.
*/
#include "lix/libstore/worker-protocol.hh"
#include "lix/libstore/length-prefixed-protocol-helper.hh"
namespace nix {
/* protocol-agnostic templates */
#define WORKER_USE_LENGTH_PREFIX_SERIALISER(TEMPLATE, T) \
TEMPLATE T WorkerProto::Serialise< T >::read(WorkerProto::ReadConn conn) \
{ \
return LengthPrefixedProtoHelper<WorkerProto, T >::read(conn); \
} \
/* NOLINTNEXTLINE(bugprone-macro-parentheses) */ \
TEMPLATE [[nodiscard]] WireFormatGenerator WorkerProto::Serialise< T >::write(WorkerProto::WriteConn conn, const T & t) \
{ \
return LengthPrefixedProtoHelper<WorkerProto, T >::write(conn, t); \
}
WORKER_USE_LENGTH_PREFIX_SERIALISER(template<typename T>, std::vector<T>)
WORKER_USE_LENGTH_PREFIX_SERIALISER(template<typename T>, std::set<T>)
WORKER_USE_LENGTH_PREFIX_SERIALISER(template<typename... Ts>, std::tuple<Ts...>)
#define COMMA_ ,
WORKER_USE_LENGTH_PREFIX_SERIALISER(
template<typename K COMMA_ typename V>,
std::map<K COMMA_ V>)
#undef COMMA_
/**
* Use `CommonProto` where possible.
*/
template<typename T>
struct WorkerProto::Serialise
{
static T read(WorkerProto::ReadConn conn)
{
return CommonProto::Serialise<T>::read(
CommonProto::ReadConn{.from = conn.from, .store = conn.store}
);
}
[[nodiscard]]
static WireFormatGenerator write(WorkerProto::WriteConn conn, const T & t)
{
return CommonProto::Serialise<T>::write(CommonProto::WriteConn{.store = conn.store}, t);
}
};
/* protocol-specific templates */
}