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change check support compiler

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neargye 2019-10-02 15:28:53 +05:00
parent 75c9d9bce5
commit c947afdbae
2 changed files with 25 additions and 23 deletions
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42
include/magic_enum.hpp
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@ -56,6 +56,10 @@
namespace magic_enum {
#if defined(__clang__) || defined(__GNUC__) && __GNUC__>= 9 || defined(_MSC_VER)
# define MAGIC_ENUM_SUPPORTED 1
#endif
// Enum value must be in range [MAGIC_ENUM_RANGE_MIN, MAGIC_ENUM_RANGE_MAX]. By default MAGIC_ENUM_RANGE_MIN = -128, MAGIC_ENUM_RANGE_MAX = 128.
// If need another range for all enum types by default, redefine the macro MAGIC_ENUM_RANGE_MIN and MAGIC_ENUM_RANGE_MAX.
// If need another range for specific enum type, add specialization enum_range for necessary enum type.
@ -79,7 +83,7 @@ namespace detail {
template <typename T>
struct supported final
#if defined(__clang__) || defined(__GNUC__) && __GNUC__>= 9 || defined(_MSC_VER) || defined(MAGIC_ENUM_NO_CHECK_SUPPORT)
#if defined(MAGIC_ENUM_SUPPORTED) && MAGIC_ENUM_SUPPORTED
: std::true_type {};
#else
: std::false_type {};
@ -139,20 +143,19 @@ constexpr std::string_view pretty_name(std::string_view name) noexcept {
template <typename E>
constexpr auto n() noexcept {
static_assert(is_enum_v<E>, "magic_enum::detail::n requires enum type.");
#if defined(__clang__)
#if defined(MAGIC_ENUM_SUPPORTED) && MAGIC_ENUM_SUPPORTED
# if defined(__clang__)
constexpr std::string_view name{__PRETTY_FUNCTION__ + 34, sizeof(__PRETTY_FUNCTION__) - 36};
#elif defined(__GNUC__)
# elif defined(__GNUC__)
constexpr std::string_view name{__PRETTY_FUNCTION__ + 49, sizeof(__PRETTY_FUNCTION__) - 51};
#elif defined(_MSC_VER)
# elif defined(_MSC_VER)
constexpr std::string_view name{__FUNCSIG__ + 40, sizeof(__FUNCSIG__) - 57};
# endif
return static_string<name.size()>{name};
#else
static_assert(supported<E>::value, "magic_enum: Unsupported compiler (https://github.com/Neargye/magic_enum#compiler-compatibility).");
return std::string_view{}; // Unsupported compiler.
#endif
if constexpr (supported<E>::value) {
return static_string<name.size()>{name};
} else {
static_assert(supported<E>::value, "magic_enum: Unsupported compiler (https://github.com/Neargye/magic_enum#compiler-compatibility).");
return std::string_view{}; // Unsupported compiler.
}
}
template <typename E>
@ -161,18 +164,17 @@ inline constexpr auto type_name_v = n<E>();
template <typename E, E V>
constexpr auto n() noexcept {
static_assert(is_enum_v<E>, "magic_enum::detail::n requires enum type.");
#if defined(__clang__) || defined(__GNUC__)
#if defined(MAGIC_ENUM_SUPPORTED) && MAGIC_ENUM_SUPPORTED
# if defined(__clang__) || defined(__GNUC__)
constexpr auto name = pretty_name({__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 2});
#elif defined(_MSC_VER)
# elif defined(_MSC_VER)
constexpr auto name = pretty_name({__FUNCSIG__, sizeof(__FUNCSIG__) - 17});
# endif
return static_string<name.size()>{name};
#else
static_assert(supported<E>::value, "magic_enum: Unsupported compiler (https://github.com/Neargye/magic_enum#compiler-compatibility).");
return std::string_view{}; // Unsupported compiler.
#endif
if constexpr (supported<E>::value) {
return static_string<name.size()>{name};
} else {
static_assert(supported<E>::value, "magic_enum: Unsupported compiler (https://github.com/Neargye/magic_enum#compiler-compatibility).");
return std::string_view{}; // Unsupported compiler.
}
}
template <typename E, E V>