mirror of
https://github.com/nlohmann/json.git
synced 2026-10-13 10:14:53 +00:00
Niels Lohmann
1e9b85262a
Besides json_fwd.hpp, include analyzers also told clients of <nlohmann/json.hpp> to include detail/json_ref.hpp (brace initialization), json_literals.hpp (_json, _json_pointer), adl_serializer.hpp, detail/macro_scope.hpp (NLOHMANN_DEFINE_*) and detail/abi_macros.hpp. Mark those includes as exported, too. ci_single_binaries only checked each header on its own, so it could not notice this. It now also runs IWYU and clang-tidy's misc-include-cleaner on small client programs in tests/iwyu_consumer, which fail on develop. With the exports, json_literals.hpp no longer gets the json_fwd.hpp suggestion that kept it out of the IWYU gate, so it is gated again. Signed-off-by: Niels Lohmann <mail@nlohmann.me>
63 lines
1.5 KiB
C++
63 lines
1.5 KiB
C++
// __ _____ _____ _____
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// __| | __| | | | JSON for Modern C++ (supporting code)
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// | | |__ | | | | | | version 3.12.0
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// |_____|_____|_____|_|___| https://github.com/nlohmann/json
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//
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// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
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// SPDX-License-Identifier: MIT
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// See values.cpp: the conversion macros and nlohmann::adl_serializer must be available through
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// <nlohmann/json.hpp> alone. NLOHMANN_JSON_SERIALIZE_ENUM (from the same header as
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// NLOHMANN_DEFINE_TYPE_INTRUSIVE) is left out: IWYU attributes the basic_json comparison in its
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// expansion to an unrelated standard header, the ambiguity described for json.hpp in cmake/ci.cmake.
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#include <string>
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#include <nlohmann/json.hpp>
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namespace ns
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{
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struct person
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{
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std::string name;
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int age;
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NLOHMANN_DEFINE_TYPE_INTRUSIVE(person, name, age)
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};
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struct legacy
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{
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int value;
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};
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} // namespace ns
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namespace nlohmann
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{
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template<>
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struct adl_serializer<ns::legacy>
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{
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static void to_json(json& j, const ns::legacy& l)
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{
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j = l.value;
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}
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static void from_json(const json& j, ns::legacy& l)
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{
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l.value = j.get<int>();
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}
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};
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} // namespace nlohmann
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int main()
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{
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ns::person ada;
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ada.name = "Ada";
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ada.age = 36;
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ns::legacy one;
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one.value = 1;
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const nlohmann::json j = ada;
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const auto p = j.get<ns::person>();
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const auto l = nlohmann::json(one).get<ns::legacy>();
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return p.age - 36 + l.value - 1;
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}
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