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git-subtree-dir: src/ipc/libmultiprocess git-subtree-split: 35944ffd23fa26652b82210351d50e896ce16c8f
50 lines
2.2 KiB
C++
50 lines
2.2 KiB
C++
// Copyright (c) 2025 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef MP_PROXY_TYPE_PAIR_H
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#define MP_PROXY_TYPE_PAIR_H
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#include <mp/util.h>
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namespace mp {
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// FIXME: Overload on output type instead of value type and switch to std::get and merge with next overload
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template <typename KeyLocalType, typename ValueLocalType, typename Value, typename Output>
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void CustomBuildField(TypeList<std::pair<KeyLocalType, ValueLocalType>>,
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Priority<1>,
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InvokeContext& invoke_context,
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Value&& value,
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Output&& output)
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{
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auto pair = output.init();
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using Accessors = typename ProxyStruct<typename decltype(pair)::Builds>::Accessors;
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BuildField(TypeList<KeyLocalType>(), invoke_context, Make<StructField, std::tuple_element_t<0, Accessors>>(pair), value.first);
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BuildField(TypeList<ValueLocalType>(), invoke_context, Make<StructField, std::tuple_element_t<1, Accessors>>(pair), value.second);
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}
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template <typename KeyLocalType, typename ValueLocalType, typename Input, typename ReadDest>
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decltype(auto) CustomReadField(TypeList<std::pair<KeyLocalType, ValueLocalType>>,
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Priority<1>,
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InvokeContext& invoke_context,
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Input&& input,
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ReadDest&& read_dest)
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{
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const auto& pair = input.get();
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using Accessors = typename ProxyStruct<typename Decay<decltype(pair)>::Reads>::Accessors;
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ReadField(TypeList<KeyLocalType>(), invoke_context, Make<StructField, std::tuple_element_t<0, Accessors>>(pair),
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ReadDestEmplace(TypeList<KeyLocalType>(), [&](auto&&... key_args) -> auto& {
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KeyLocalType* key = nullptr;
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ReadField(TypeList<ValueLocalType>(), invoke_context, Make<StructField, std::tuple_element_t<1, Accessors>>(pair),
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ReadDestEmplace(TypeList<ValueLocalType>(), [&](auto&&... value_args) -> auto& {
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auto& ret = read_dest.construct(std::piecewise_construct, std::forward_as_tuple(key_args...),
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std::forward_as_tuple(value_args...));
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key = &ret.first;
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return ret.second;
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}));
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return *key;
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}));
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}
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} // namespace mp
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#endif // MP_PROXY_TYPE_PAIR_H
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