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FMT_ENABLE_IF -> enable_if_t

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Victor Zverovich
2019-05-31 20:09:19 -07:00
parent 634f707f2b
commit f57227a148
3 changed files with 8 additions and 8 deletions
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10
include/fmt/core.h
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@@ -187,11 +187,6 @@
# define FMT_ASSERT(condition, message) assert((condition) && message)
#endif
// An enable_if helper to be used in template parameters. enable_if in template
// parameters results in much shorter symbols: https://godbolt.org/z/sWw4vP.
#define FMT_ENABLE_IF_T(...) typename std::enable_if<(__VA_ARGS__), int>::type
#define FMT_ENABLE_IF(...) FMT_ENABLE_IF_T(__VA_ARGS__) = 0
// libc++ supports string_view in pre-c++17.
#if (FMT_HAS_INCLUDE(<string_view>) && \
(__cplusplus > 201402L || defined(_LIBCPP_VERSION))) || \
@@ -215,6 +210,11 @@ using std_string_view = std::experimental::basic_string_view<Char>;
template <typename T> struct std_string_view {};
#endif
// An enable_if helper to be used in template parameters. enable_if in template
// parameters results in much shorter symbols: https://godbolt.org/z/sWw4vP.
template <bool B> using enable_if_t = typename std::enable_if<B, int>::type;
#define FMT_ENABLE_IF(...) internal::enable_if_t<__VA_ARGS__> = 0
#if (__cplusplus >= 201703L || \
(defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)) && \
__cpp_lib_is_invocable >= 201703L