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Move UDLs out of the global namespace (#3605)

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* Move UDLs into nlohmann::literals::json_literals namespace

* Add 'using namespace' to unit tests

* Add 'using namespace' to examples

* Add 'using namespace' to README

* Move UDL mkdocs pages out of basic_json/

* Update documentation

* Update docset index

* Add JSON_GlobalUDLs CMake option

* Add unit test

* Build examples without global UDLs

* Add CI target
This commit is contained in:
Florian Albrechtskirchinger
2022-07-31 17:38:52 +02:00
committed by GitHub
parent 8fd8b52907
commit 9aafcbe965
61 changed files with 377 additions and 94 deletions
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41
include/nlohmann/json.hpp
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@ -5074,6 +5074,29 @@ std::string to_string(const NLOHMANN_BASIC_JSON_TPL& j)
return j.dump();
}
inline namespace literals
{
inline namespace json_literals
{
/// @brief user-defined string literal for JSON values
/// @sa https://json.nlohmann.me/api/basic_json/operator_literal_json/
JSON_HEDLEY_NON_NULL(1)
inline nlohmann::json operator "" _json(const char* s, std::size_t n)
{
return nlohmann::json::parse(s, s + n);
}
/// @brief user-defined string literal for JSON pointer
/// @sa https://json.nlohmann.me/api/basic_json/operator_literal_json_pointer/
JSON_HEDLEY_NON_NULL(1)
inline nlohmann::json::json_pointer operator "" _json_pointer(const char* s, std::size_t n)
{
return nlohmann::json::json_pointer(std::string(s, n));
}
} // namespace json_literals
} // namespace literals
NLOHMANN_JSON_NAMESPACE_END
///////////////////////
@ -5130,21 +5153,9 @@ inline void swap(nlohmann::NLOHMANN_BASIC_JSON_TPL& j1, nlohmann::NLOHMANN_BASIC
} // namespace std
/// @brief user-defined string literal for JSON values
/// @sa https://json.nlohmann.me/api/basic_json/operator_literal_json/
JSON_HEDLEY_NON_NULL(1)
inline nlohmann::json operator "" _json(const char* s, std::size_t n)
{
return nlohmann::json::parse(s, s + n);
}
/// @brief user-defined string literal for JSON pointer
/// @sa https://json.nlohmann.me/api/basic_json/operator_literal_json_pointer/
JSON_HEDLEY_NON_NULL(1)
inline nlohmann::json::json_pointer operator "" _json_pointer(const char* s, std::size_t n)
{
return nlohmann::json::json_pointer(std::string(s, n));
}
#if JSON_USE_GLOBAL_UDLS
using namespace nlohmann::literals::json_literals; // NOLINT(build/namespaces_literals)
#endif
#include <nlohmann/detail/macro_unscope.hpp>