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Support ReSharper C++ builtins for type/enumerator name #238

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Merged
Neargye merged 1 commit into from
Feb 1, 2023
Merged

Support ReSharper C++ builtins for type/enumerator name #238

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25 changes: 22 additions & 3 deletions include/magic_enum.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -77,7 +77,7 @@
#endif

// Checks magic_enum compiler compatibility.
#if defined(__clang__) && __clang_major__ >= 5 || defined(__GNUC__) && __GNUC__ >= 9 || defined(_MSC_VER) && _MSC_VER >= 1910
#if defined(__clang__) && __clang_major__ >= 5 || defined(__GNUC__) && __GNUC__ >= 9 || defined(_MSC_VER) && _MSC_VER >= 1910 || defined(__RESHARPER__)
# undef MAGIC_ENUM_SUPPORTED
# define MAGIC_ENUM_SUPPORTED 1
#endif
Expand All @@ -100,6 +100,19 @@
# define MAGIC_ENUM_RANGE_MAX 128
#endif

// Improve ReSharper C++ intellisense performance with builtins, avoiding unnecessary template instantiations.
#if defined(__RESHARPER__)
# undef MAGIC_ENUM_GET_ENUM_NAME_BUILTIN
# undef MAGIC_ENUM_GET_TYPE_NAME_BUILTIN
# if __RESHARPER__ >= 20230100
# define MAGIC_ENUM_GET_ENUM_NAME_BUILTIN(V) __rscpp_enumerator_name(V)
# define MAGIC_ENUM_GET_TYPE_NAME_BUILTIN(T) __rscpp_type_name<T>()
# else
# define MAGIC_ENUM_GET_ENUM_NAME_BUILTIN(V) nullptr
# define MAGIC_ENUM_GET_TYPE_NAME_BUILTIN(T) nullptr
# endif
#endif

namespace magic_enum {

// If need another optional type, define the macro MAGIC_ENUM_USING_ALIAS_OPTIONAL.
Expand Down Expand Up @@ -408,7 +421,10 @@ constexpr auto n() noexcept {
static_assert(is_enum_v<E>, "magic_enum::detail::n requires enum type.");

if constexpr (supported<E>::value) {
#if defined(__clang__) || defined(__GNUC__)
#if defined(MAGIC_ENUM_GET_TYPE_NAME_BUILTIN)
constexpr auto name_ptr = MAGIC_ENUM_GET_TYPE_NAME_BUILTIN(E);
constexpr auto name = name_ptr ? string_view{ name_ptr } : std::string_view{};
#elif defined(__clang__) || defined(__GNUC__)
constexpr auto name = pretty_name({__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 2});
#elif defined(_MSC_VER)
constexpr auto name = pretty_name({__FUNCSIG__, sizeof(__FUNCSIG__) - 17});
Expand Down Expand Up @@ -449,7 +465,10 @@ constexpr auto n() noexcept {
static_assert(is_enum_v<E>, "magic_enum::detail::n requires enum type.");

if constexpr (supported<E>::value) {
#if defined(__clang__) || defined(__GNUC__)
#if defined(MAGIC_ENUM_GET_ENUM_NAME_BUILTIN)
constexpr auto name_ptr = MAGIC_ENUM_GET_ENUM_NAME_BUILTIN(V);
constexpr auto name = name_ptr ? string_view{ name_ptr } : std::string_view{};
#elif defined(__clang__) || defined(__GNUC__)
constexpr auto name = pretty_name({__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 2});
#elif defined(_MSC_VER)
constexpr auto name = pretty_name({__FUNCSIG__, sizeof(__FUNCSIG__) - 17});
Expand Down