citra/src/web_service/json.h

// Copyright 2018 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#pragma once

// This hack is needed to support json.hpp on platforms where the C++17 stdlib
// lacks std::string_view. See https://github.com/nlohmann/json/issues/735.
// clang-format off
#if !__has_include(<string_view>) && __has_include(<experimental/string_view>)
# include <experimental/string_view>
# define string_view experimental::string_view
# include <json.hpp>
# undef string_view
#else
# include <json.hpp>
#endif
// clang-format on
Fix build on platforms without std::string_view json.hpp wants it, but it isn't always available. Rather than patch json.hpp directly to remove the dependency, provide a json.h wrapper header that subs in std::experimental::string_view using preprocessor magic. All the consumers of json.hpp are in src/web_service, so the wrapper header is placed there as well. 2018-03-02 18:15:45 +02:00			`// Copyright 2018 Citra Emulator Project`
			`// Licensed under GPLv2 or any later version`
			`// Refer to the license.txt file included.`

			`#pragma once`

			`// This hack is needed to support json.hpp on platforms where the C++17 stdlib`
			`// lacks std::string_view. See https://github.com/nlohmann/json/issues/735.`
			`// clang-format off`
			`#if !__has_include(<string_view>) && __has_include(<experimental/string_view>)`
			`# include <experimental/string_view>`
			`# define string_view experimental::string_view`
			`# include <json.hpp>`
			`# undef string_view`
			`#else`
			`# include <json.hpp>`
			`#endif`
			`// clang-format on`