diff options
Diffstat (limited to 'lib/enumDetails.h')
| -rw-r--r-- | lib/enumDetails.h | 102 |
1 files changed, 45 insertions, 57 deletions
diff --git a/lib/enumDetails.h b/lib/enumDetails.h index dfae082..49906d4 100644 --- a/lib/enumDetails.h +++ b/lib/enumDetails.h @@ -9,11 +9,11 @@ /// EnumDetailsBase // Shared helpers struct EnumDetailsBase { - template<size_t len> + template<size_t Len> constexpr static auto strArr(auto input, auto start, auto end) { - std::array<char, len> out; + std::array<char, Len> out; input.copy(out.begin(), end - start, start); return out; } @@ -33,22 +33,22 @@ protected: return std::string_view {__PRETTY_FUNCTION__}; }; - constexpr static auto typeNameStart {typeraw().find(SEARCH_TYPE) + SEARCH_TYPE.length()}; - constexpr static auto typeNameEnd {typeraw().find_first_of("];", typeNameStart)}; - constexpr static auto typeNameLen {typeNameEnd - typeNameStart}; - constexpr static auto typeNameArr {strArr<typeNameLen>(typeraw(), typeNameStart, typeNameEnd)}; + constexpr static auto TYPE_NAME_START {typeraw().find(SEARCH_TYPE) + SEARCH_TYPE.length()}; + constexpr static auto TYPE_NAME_END {typeraw().find_first_of("];", TYPE_NAME_START)}; + constexpr static auto TYPE_NAME_LEN {TYPE_NAME_END - TYPE_NAME_START}; + constexpr static auto TYPE_NAME_ARR {strArr<TYPE_NAME_LEN>(typeraw(), TYPE_NAME_START, TYPE_NAME_END)}; public: - constexpr static std::string_view typeName {typeNameArr.data(), typeNameArr.size()}; + constexpr static std::string_view TYPE_NAME {TYPE_NAME_ARR.data(), TYPE_NAME_ARR.size()}; }; /// EnumValueDetails // Extracts the value name and constructs string_views of the parts -template<auto value> struct EnumValueDetails : public EnumTypeDetails<decltype(value)> { +template<auto Value> struct EnumValueDetails : public EnumTypeDetails<decltype(Value)> { #ifndef ENUM_PROBE private: #endif - using T = EnumTypeDetails<decltype(value)>; + using T = EnumTypeDetails<decltype(Value)>; constexpr static auto raw() @@ -56,26 +56,23 @@ private: return std::string_view {__PRETTY_FUNCTION__}; }; - constexpr static auto nameStart {raw().find_last_of(": ") + 1}; - constexpr static auto nameEnd {raw().find_first_of("];", nameStart)}; - constexpr static auto nameLen {nameEnd - nameStart}; - constexpr static auto nameArr {EnumValueDetails::template strArr<nameLen>(raw(), nameStart, nameEnd)}; + constexpr static auto NAME_START {raw().find_last_of(": ") + 1}; + constexpr static auto NAME_END {raw().find_first_of("];", NAME_START)}; + constexpr static auto NAME_LEN {NAME_END - NAME_START}; + constexpr static auto NAME_ARR {EnumValueDetails::template strArr<NAME_LEN>(raw(), NAME_START, NAME_END)}; public: - constexpr static std::string_view valueName {nameArr.data(), nameArr.size()}; - constexpr static auto valid {valueName.back() < '0' || valueName.back() > '9'}; -#pragma GCC diagnostic push -#ifdef __clang__ -# pragma GCC diagnostic ignored "-Wenum-constexpr-conversion" -#endif - constexpr static auto raw_value {value}; -#pragma GCC diagnostic pop + constexpr static std::string_view VALUE_NAME {NAME_ARR.data(), NAME_ARR.size()}; + constexpr static auto VALID {VALUE_NAME.back() < '0' || VALUE_NAME.back() > '9'}; + constexpr static auto RAW_VALUE {Value}; }; /// EnumValueCollection // Customisation point for specifying the range of underlying values your enum can have template<typename E> struct EnumValueCollection { - using Vs = std::make_integer_sequence<int, 256>; + using Underlying = std::underlying_type_t<E>; + static constexpr Underlying UPPER = std::numeric_limits<Underlying>::max(); + using Vs = std::make_integer_sequence<Underlying, UPPER>; }; /// EnumDetails @@ -84,45 +81,36 @@ template<typename E> struct EnumDetails { #ifndef ENUM_PROBE private: #endif - template<auto... n> + using Underlying = std::underlying_type_t<E>; + + template<auto... N> constexpr static auto - get_valids(std::integer_sequence<int, n...>) + getValids(std::integer_sequence<Underlying, N...>) { -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wconversion" -#ifdef __clang__ -# pragma GCC diagnostic ignored "-Wenum-constexpr-conversion" -#endif - return std::array {EnumValueDetails<static_cast<E>(n)>::valid...}; -#pragma GCC diagnostic pop + return std::array {EnumValueDetails<static_cast<E>(N)>::VALID...}; } - template<auto... n> + template<auto... N> constexpr static auto - get_values(std::integer_sequence<int, n...>) + getValues(std::integer_sequence<Underlying, N...>) { -#pragma GCC diagnostic push -#ifdef __clang__ -# pragma GCC diagnostic ignored "-Wenum-constexpr-conversion" -#endif - return std::array {EnumValueDetails<static_cast<E>(n)>::raw_value...}; -#pragma GCC diagnostic pop + return std::array {EnumValueDetails<static_cast<E>(N)>::RAW_VALUE...}; } - template<auto... n> + template<auto... N> constexpr static auto - get_valueNames(std::integer_sequence<int, n...>) + getValueNames(std::integer_sequence<int, N...>) { - return std::array {EnumValueDetails<values[n]>::valueName...}; + return std::array {EnumValueDetails<VALUES[N]>::VALUE_NAME...}; } using EVC = EnumValueCollection<E>; - constexpr static auto valid_flags {get_valids(typename EVC::Vs {})}; - constexpr static auto valid_count {std::count_if(valid_flags.begin(), valid_flags.end(), std::identity {})}; + constexpr static auto VALID_FLAGS {getValids(typename EVC::Vs {})}; + constexpr static auto VALID_COUNT {std::count_if(VALID_FLAGS.begin(), VALID_FLAGS.end(), std::identity {})}; constexpr static auto - lookup(const auto key, const auto & search, - const auto & out) -> std::optional<typename std::decay_t<decltype(out)>::value_type> + lookup(const auto key, const auto & search, const auto & out) + -> std::optional<typename std::decay_t<decltype(out)>::value_type> { if (const auto itr = std::find(search.begin(), search.end(), key); itr != search.end()) { return out[static_cast<std::size_t>(std::distance(search.begin(), itr))]; @@ -131,32 +119,32 @@ private: } public: - constexpr static auto values {[]() { - constexpr auto values {get_values(typename EVC::Vs {})}; - static_assert(std::is_sorted(values.begin(), values.end()), "Candidate values must be sorted"); - std::array<E, valid_count> out; - std::copy_if(values.begin(), values.end(), out.begin(), [valid = valid_flags.begin()](auto) mutable { + constexpr static auto VALUES {[]() { + constexpr auto VALUES {getValues(typename EVC::Vs {})}; + static_assert(std::ranges::is_sorted(VALUES), "Candidate values must be sorted"); + std::array<E, VALID_COUNT> out; + std::copy_if(VALUES.begin(), VALUES.end(), out.begin(), [valid = VALID_FLAGS.begin()](auto) mutable { return *valid++; }); return out; }()}; - constexpr static auto names {get_valueNames(std::make_integer_sequence<int, valid_count> {})}; + constexpr static auto NAMES {getValueNames(std::make_integer_sequence<int, VALID_COUNT> {})}; constexpr static bool - is_valid(E value) noexcept + isValid(E value) noexcept { - return std::binary_search(values.begin(), values.end(), value); + return std::binary_search(VALUES.begin(), VALUES.end(), value); } constexpr static std::optional<E> parse(std::string_view name) noexcept { - return lookup(name, names, values); + return lookup(name, NAMES, VALUES); } constexpr static std::optional<std::string_view> - to_string(E value) noexcept + toString(E value) noexcept { - return lookup(value, values, names); + return lookup(value, VALUES, NAMES); } }; |