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| author | Sebastian Falbesoner <sebastian.falbesoner@gmail.com> | 2021-03-05 14:33:41 +0100 |
|---|---|---|
| committer | Sebastian Falbesoner <sebastian.falbesoner@gmail.com> | 2021-03-29 22:37:59 +0200 |
| commit | 95cccf8a4b392959c1fd7ec0647e04eb13880865 (patch) | |
| tree | a33339687a25a3680bd2ab52ef21da4ee2c8f3b0 | |
| parent | 1c7be9ab90af14d24f4668b02d9f07cec6f88a78 (diff) | |
| download | bitcoin-95cccf8a4b392959c1fd7ec0647e04eb13880865.tar.xz | |
util: introduce helper AnyPtr to access std::any instances
Co-authored-by: Russell Yanofsky <russ@yanofsky.org>
| -rw-r--r-- | src/util/system.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/util/system.h b/src/util/system.h index 291f3f5541..29657e56e2 100644 --- a/src/util/system.h +++ b/src/util/system.h @@ -25,6 +25,7 @@ #include <util/threadnames.h> #include <util/time.h> +#include <any> #include <exception> #include <map> #include <optional> @@ -500,6 +501,18 @@ inline void insert(std::set<TsetT>& dst, const Tsrc& src) { dst.insert(src.begin(), src.end()); } +/** + * Helper function to access the contained object of a std::any instance. + * Returns a pointer to the object if passed instance has a value and the type + * matches, nullptr otherwise. + */ +template<typename T> +T* AnyPtr(const std::any& any) noexcept +{ + T* const* ptr = std::any_cast<T*>(&any); + return ptr ? *ptr : nullptr; +} + #ifdef WIN32 class WinCmdLineArgs { |