diff options
| -rw-r--r-- | absl/base/internal/invoke.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/absl/base/internal/invoke.h b/absl/base/internal/invoke.h index 5c71f328..e9efb2fc 100644 --- a/absl/base/internal/invoke.h +++ b/absl/base/internal/invoke.h @@ -14,6 +14,8 @@ // // absl::base_internal::invoke(f, args...) is an implementation of // INVOKE(f, args...) from section [func.require] of the C++ standard. +// When compiled as C++17 and later versions, it is implemented as an alias of +// std::invoke. // // [func.require] // Define INVOKE (f, t1, t2, ..., tN) as follows: @@ -35,6 +37,25 @@ #ifndef ABSL_BASE_INTERNAL_INVOKE_H_ #define ABSL_BASE_INTERNAL_INVOKE_H_ +#include "absl/base/config.h" + +#if __cplusplus >= 201703L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) + +#include <functional> + +namespace absl { +ABSL_NAMESPACE_BEGIN +namespace base_internal { + +using std::invoke; +using std::invoke_result_t; + +} // namespace base_internal +ABSL_NAMESPACE_END +} // namespace absl + +#else // __cplusplus >= 201703L + #include <algorithm> #include <type_traits> #include <utility> @@ -184,4 +205,6 @@ invoke_result_t<F, Args...> invoke(F&& f, Args&&... args) { ABSL_NAMESPACE_END } // namespace absl +#endif // __cplusplus >= 201703L + #endif // ABSL_BASE_INTERNAL_INVOKE_H_ |