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Make library work with C++20 modules (#4764)

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* ✅ add test for C++20 modules

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* 🚨 fix warning

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Add missing header (#4763)

* 🐛 add missing header

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* 🚨 fix warning

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* 🚨 fix warning

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

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Signed-off-by: Niels Lohmann <mail@nlohmann.me>

---------

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
This commit is contained in:
Niels Lohmann
2025-04-28 21:52:26 +02:00
committed by GitHub
parent 3b02afb9d9
commit eef76c200e
8 changed files with 66 additions and 5 deletions
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12
tests/module_cpp20/CMakeLists.txt Normal file
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cmake_minimum_required(VERSION 3.28)
project(json_test CXX)
add_executable(json_test)
target_sources(json_test
PRIVATE main.cpp
PUBLIC FILE_SET cxx_modules TYPE CXX_MODULES FILES json.cpp)
target_compile_features(json_test PUBLIC cxx_std_20)
target_include_directories(json_test PRIVATE ../../include)

17
tests/module_cpp20/json.cpp Normal file
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module;
#include <nlohmann/json.hpp>
export module json;
export namespace nlohmann
{
using ::nlohmann::adl_serializer;
using ::nlohmann::basic_json;
using ::nlohmann::json_pointer;
using ::nlohmann::json;
using ::nlohmann::ordered_json;
using ::nlohmann::ordered_map;
using ::nlohmann::json_pointer;
} // namespace nlohmann

6
tests/module_cpp20/main.cpp Normal file
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import json;
int main()
{
nlohmann::json j;
}