protect.hpp 1.9 KB

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  1. // sol2
  2. // The MIT License (MIT)
  3. // Copyright (c) 2013-2022 Rapptz, ThePhD and contributors
  4. // Permission is hereby granted, free of charge, to any person obtaining a copy of
  5. // this software and associated documentation files (the "Software"), to deal in
  6. // the Software without restriction, including without limitation the rights to
  7. // use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
  8. // the Software, and to permit persons to whom the Software is furnished to do so,
  9. // subject to the following conditions:
  10. // The above copyright notice and this permission notice shall be included in all
  11. // copies or substantial portions of the Software.
  12. // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  13. // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
  14. // FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
  15. // COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  16. // IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  17. // CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  18. #ifndef SOL_PROTECT_HPP
  19. #define SOL_PROTECT_HPP
  20. #include <sol/traits.hpp>
  21. #include <utility>
  22. namespace sol {
  23. template <typename T>
  24. struct protect_t {
  25. T value;
  26. template <typename Arg, typename... Args, meta::disable<std::is_same<protect_t, meta::unqualified_t<Arg>>> = meta::enabler>
  27. protect_t(Arg&& arg, Args&&... args) : value(std::forward<Arg>(arg), std::forward<Args>(args)...) {
  28. }
  29. protect_t(const protect_t&) = default;
  30. protect_t(protect_t&&) = default;
  31. protect_t& operator=(const protect_t&) = default;
  32. protect_t& operator=(protect_t&&) = default;
  33. };
  34. template <typename T>
  35. auto protect(T&& value) {
  36. return protect_t<std::decay_t<T>>(std::forward<T>(value));
  37. }
  38. } // namespace sol
  39. #endif // SOL_PROTECT_HPP