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🔥 conditional_cast

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This commit is contained in:
Vladislav Nepogodin 2021-12-19 21:37:21 +04:00
parent f81cb9f365
commit f096c615c3
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GPG Key ID: B62C3D10C54D5DA9
2 changed files with 18 additions and 4 deletions
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18
include/spdlog/common.h
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@ -30,7 +30,7 @@
# define SPDLOG_API __declspec(dllimport)
# endif
# else // !defined(_WIN32)
# define SPDLOG_API __attribute__((visibility ("default")))
# define SPDLOG_API __attribute__((visibility("default")))
# endif
# else // !defined(SPDLOG_SHARED_LIB)
# define SPDLOG_API
@ -320,13 +320,27 @@ struct file_event_handlers
};
namespace details {
// to avoid useless casts (see https://github.com/nlohmann/json/issues/2893#issuecomment-889152324)
template<typename T, typename U, std::enable_if_t<!std::is_same<T, U>::value, int> = 0>
constexpr T conditional_static_cast(U value)
{
return static_cast<T>(value);
}
template<typename T, typename U, std::enable_if_t<std::is_same<T, U>::value, int> = 0>
constexpr T conditional_static_cast(U value)
{
return value;
}
// make_unique support for pre c++14
#if __cplusplus >= 201402L // C++14 and beyond
using std::make_unique;
#else
template<typename T, typename... Args>
std::unique_ptr<T> make_unique(Args &&... args)
std::unique_ptr<T> make_unique(Args &&...args)
{
static_assert(!std::is_array<T>::value, "arrays not supported");
return std::unique_ptr<T>(new T(std::forward<Args>(args)...));

4
include/spdlog/details/os-inl.h
View File

@ -405,9 +405,9 @@ SPDLOG_INLINE int pid() SPDLOG_NOEXCEPT
{
#ifdef _WIN32
return static_cast<int>(::GetCurrentProcessId());
return conditional_static_cast<int>(::GetCurrentProcessId());
#else
return static_cast<int>(::getpid());
return conditional_static_cast<int>(::getpid());
#endif
}