// This file is part of Better Enums, released under the BSD 2-clause license. // See LICENSE for details, or visit http://github.com/aantron/better-enums. #pragma once #ifndef _BETTER_ENUMS_ENUM_H_ #define _BETTER_ENUMS_ENUM_H_ #include #include #include #ifdef BETTER_ENUMS_CONSTEXPR # define _ENUM_HAVE_CONSTEXPR #else # ifdef __GNUC__ # ifdef __clang__ # if __has_feature(cxx_constexpr) # define _ENUM_HAVE_CONSTEXPR # endif # else # if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) # if defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L # define _ENUM_HAVE_CONSTEXPR # endif # endif # endif # endif #endif #ifdef BETTER_ENUMS_NO_CONSTEXPR # if defined(_ENUM_HAVE_CONSTEXPR) # undef _ENUM_HAVE_CONSTEXPR # endif #endif #ifdef _ENUM_HAVE_CONSTEXPR # define _ENUM_CONSTEXPR constexpr # define _ENUM_NULLPTR nullptr #else # define _ENUM_CONSTEXPR # define _ENUM_NULLPTR ((void*)0) #endif #ifndef __GNUC__ # define strcasecmp stricmp #endif #ifdef BETTER_ENUMS_MACRO_FILE # include BETTER_ENUMS_MACRO_FILE #else #define _ENUM_PP_MAP(macro, data, ...) \ _ENUM_A(_ENUM_PP_MAP_VAR_COUNT, _ENUM_PP_COUNT(__VA_ARGS__)) \ (macro, data, __VA_ARGS__) #define _ENUM_PP_MAP_VAR_COUNT(count) _ENUM_M ## count #define _ENUM_A(macro, ...) macro(__VA_ARGS__) #define _ENUM_M1(m, d, x) _ENUM_A(m, d, 0, x) #define _ENUM_M2(m,d,x,...) _ENUM_A(m,d,1,x) _ENUM_M1(m,d,__VA_ARGS__) #define _ENUM_M3(m,d,x,...) _ENUM_A(m,d,2,x) _ENUM_M2(m,d,__VA_ARGS__) #define _ENUM_M4(m,d,x,...) _ENUM_A(m,d,3,x) _ENUM_M3(m,d,__VA_ARGS__) #define _ENUM_M5(m,d,x,...) _ENUM_A(m,d,4,x) _ENUM_M4(m,d,__VA_ARGS__) #define _ENUM_M6(m,d,x,...) _ENUM_A(m,d,5,x) _ENUM_M5(m,d,__VA_ARGS__) #define _ENUM_M7(m,d,x,...) _ENUM_A(m,d,6,x) _ENUM_M6(m,d,__VA_ARGS__) #define _ENUM_M8(m,d,x,...) _ENUM_A(m,d,7,x) _ENUM_M7(m,d,__VA_ARGS__) #define _ENUM_M9(m,d,x,...) _ENUM_A(m,d,8,x) _ENUM_M8(m,d,__VA_ARGS__) #define _ENUM_M10(m,d,x,...) _ENUM_A(m,d,9,x) _ENUM_M9(m,d,__VA_ARGS__) #define _ENUM_M11(m,d,x,...) _ENUM_A(m,d,10,x) _ENUM_M10(m,d,__VA_ARGS__) #define _ENUM_M12(m,d,x,...) _ENUM_A(m,d,11,x) _ENUM_M11(m,d,__VA_ARGS__) #define _ENUM_M13(m,d,x,...) _ENUM_A(m,d,12,x) _ENUM_M12(m,d,__VA_ARGS__) #define _ENUM_M14(m,d,x,...) _ENUM_A(m,d,13,x) _ENUM_M13(m,d,__VA_ARGS__) #define _ENUM_M15(m,d,x,...) _ENUM_A(m,d,14,x) _ENUM_M14(m,d,__VA_ARGS__) #define _ENUM_M16(m,d,x,...) _ENUM_A(m,d,15,x) _ENUM_M15(m,d,__VA_ARGS__) #define _ENUM_M17(m,d,x,...) _ENUM_A(m,d,16,x) _ENUM_M16(m,d,__VA_ARGS__) #define _ENUM_M18(m,d,x,...) _ENUM_A(m,d,17,x) _ENUM_M17(m,d,__VA_ARGS__) #define _ENUM_M19(m,d,x,...) _ENUM_A(m,d,18,x) _ENUM_M18(m,d,__VA_ARGS__) #define _ENUM_M20(m,d,x,...) _ENUM_A(m,d,19,x) _ENUM_M19(m,d,__VA_ARGS__) #define _ENUM_M21(m,d,x,...) _ENUM_A(m,d,20,x) _ENUM_M20(m,d,__VA_ARGS__) #define _ENUM_M22(m,d,x,...) _ENUM_A(m,d,21,x) _ENUM_M21(m,d,__VA_ARGS__) #define _ENUM_M23(m,d,x,...) _ENUM_A(m,d,22,x) _ENUM_M22(m,d,__VA_ARGS__) #define _ENUM_M24(m,d,x,...) _ENUM_A(m,d,23,x) _ENUM_M23(m,d,__VA_ARGS__) #define _ENUM_M25(m,d,x,...) _ENUM_A(m,d,24,x) _ENUM_M24(m,d,__VA_ARGS__) #define _ENUM_M26(m,d,x,...) _ENUM_A(m,d,25,x) _ENUM_M25(m,d,__VA_ARGS__) #define _ENUM_M27(m,d,x,...) _ENUM_A(m,d,26,x) _ENUM_M26(m,d,__VA_ARGS__) #define _ENUM_M28(m,d,x,...) _ENUM_A(m,d,27,x) _ENUM_M27(m,d,__VA_ARGS__) #define _ENUM_M29(m,d,x,...) _ENUM_A(m,d,28,x) _ENUM_M28(m,d,__VA_ARGS__) #define _ENUM_M30(m,d,x,...) _ENUM_A(m,d,29,x) _ENUM_M29(m,d,__VA_ARGS__) #define _ENUM_M31(m,d,x,...) _ENUM_A(m,d,30,x) _ENUM_M30(m,d,__VA_ARGS__) #define _ENUM_M32(m,d,x,...) _ENUM_A(m,d,31,x) _ENUM_M31(m,d,__VA_ARGS__) #define _ENUM_M33(m,d,x,...) _ENUM_A(m,d,32,x) _ENUM_M32(m,d,__VA_ARGS__) #define _ENUM_M34(m,d,x,...) _ENUM_A(m,d,33,x) _ENUM_M33(m,d,__VA_ARGS__) #define _ENUM_M35(m,d,x,...) _ENUM_A(m,d,34,x) _ENUM_M34(m,d,__VA_ARGS__) #define _ENUM_M36(m,d,x,...) _ENUM_A(m,d,35,x) _ENUM_M35(m,d,__VA_ARGS__) #define _ENUM_M37(m,d,x,...) _ENUM_A(m,d,36,x) _ENUM_M36(m,d,__VA_ARGS__) #define _ENUM_M38(m,d,x,...) _ENUM_A(m,d,37,x) _ENUM_M37(m,d,__VA_ARGS__) #define _ENUM_M39(m,d,x,...) _ENUM_A(m,d,38,x) _ENUM_M38(m,d,__VA_ARGS__) #define _ENUM_M40(m,d,x,...) _ENUM_A(m,d,39,x) _ENUM_M39(m,d,__VA_ARGS__) #define _ENUM_M41(m,d,x,...) _ENUM_A(m,d,40,x) _ENUM_M40(m,d,__VA_ARGS__) #define _ENUM_M42(m,d,x,...) _ENUM_A(m,d,41,x) _ENUM_M41(m,d,__VA_ARGS__) #define _ENUM_M43(m,d,x,...) _ENUM_A(m,d,42,x) _ENUM_M42(m,d,__VA_ARGS__) #define _ENUM_M44(m,d,x,...) _ENUM_A(m,d,43,x) _ENUM_M43(m,d,__VA_ARGS__) #define _ENUM_M45(m,d,x,...) _ENUM_A(m,d,44,x) _ENUM_M44(m,d,__VA_ARGS__) #define _ENUM_M46(m,d,x,...) _ENUM_A(m,d,45,x) _ENUM_M45(m,d,__VA_ARGS__) #define _ENUM_M47(m,d,x,...) _ENUM_A(m,d,46,x) _ENUM_M46(m,d,__VA_ARGS__) #define _ENUM_M48(m,d,x,...) _ENUM_A(m,d,47,x) _ENUM_M47(m,d,__VA_ARGS__) #define _ENUM_M49(m,d,x,...) _ENUM_A(m,d,48,x) _ENUM_M48(m,d,__VA_ARGS__) #define _ENUM_M50(m,d,x,...) _ENUM_A(m,d,49,x) _ENUM_M49(m,d,__VA_ARGS__) #define _ENUM_M51(m,d,x,...) _ENUM_A(m,d,50,x) _ENUM_M50(m,d,__VA_ARGS__) #define _ENUM_M52(m,d,x,...) _ENUM_A(m,d,51,x) _ENUM_M51(m,d,__VA_ARGS__) #define _ENUM_M53(m,d,x,...) _ENUM_A(m,d,52,x) _ENUM_M52(m,d,__VA_ARGS__) #define _ENUM_M54(m,d,x,...) _ENUM_A(m,d,53,x) _ENUM_M53(m,d,__VA_ARGS__) #define _ENUM_M55(m,d,x,...) _ENUM_A(m,d,54,x) _ENUM_M54(m,d,__VA_ARGS__) #define _ENUM_M56(m,d,x,...) _ENUM_A(m,d,55,x) _ENUM_M55(m,d,__VA_ARGS__) #define _ENUM_M57(m,d,x,...) _ENUM_A(m,d,56,x) _ENUM_M56(m,d,__VA_ARGS__) #define _ENUM_M58(m,d,x,...) _ENUM_A(m,d,57,x) _ENUM_M57(m,d,__VA_ARGS__) #define _ENUM_M59(m,d,x,...) _ENUM_A(m,d,58,x) _ENUM_M58(m,d,__VA_ARGS__) #define _ENUM_M60(m,d,x,...) _ENUM_A(m,d,59,x) _ENUM_M59(m,d,__VA_ARGS__) #define _ENUM_M61(m,d,x,...) _ENUM_A(m,d,60,x) _ENUM_M60(m,d,__VA_ARGS__) #define _ENUM_M62(m,d,x,...) _ENUM_A(m,d,61,x) _ENUM_M61(m,d,__VA_ARGS__) #define _ENUM_M63(m,d,x,...) _ENUM_A(m,d,62,x) _ENUM_M62(m,d,__VA_ARGS__) #define _ENUM_M64(m,d,x,...) _ENUM_A(m,d,63,x) _ENUM_M63(m,d,__VA_ARGS__) #define _ENUM_PP_COUNT_IMPL(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, \ _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, \ _28, _29, _30, _31, _32, _33, _34, _35, _36, _37, _38, _39, _40, _41, _42, \ _43, _44, _45, _46, _47, _48, _49, _50, _51, _52, _53, _54, _55, _56, _57, \ _58, _59, _60, _61, _62, _63, _64, count, ...) count #define _ENUM_PP_COUNT(...) _ENUM_PP_COUNT_IMPL(__VA_ARGS__, 64, 63, 62, 61, \ 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 49, 48, 47, 46, 45, 44, 43, 42,\ 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23,\ 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2,\ 1) #define _ENUM_ITERATE(X, f, l) X(f, l, 0) X(f, l, 1) X(f, l, 2) X(f, l, 3) \ X(f, l, 4) X(f, l, 5) X(f, l, 6) X(f, l, 7) X(f, l, 8) X(f, l, 9) \ X(f, l, 10) X(f, l, 11) X(f, l, 12) X(f, l, 13) X(f, l, 14) X(f, l, 15) \ X(f, l, 16) X(f, l, 17) X(f, l, 18) X(f, l, 19) X(f, l, 20) X(f, l, 21) \ X(f, l, 22) X(f, l, 23) #endif // #ifdef BETTER_ENUMS_MACRO_FILE #define _ENUM_EAT_ASSIGN_SINGLE(EnumType, index, expression) \ ((better_enums::_eat_assign)EnumType::expression), #define _ENUM_EAT_ASSIGN(EnumType, ...) \ _ENUM_PP_MAP(_ENUM_EAT_ASSIGN_SINGLE, EnumType, __VA_ARGS__) #define _ENUM_NS(EnumType) better_enums::_data_ ## EnumType #define _ENUM_NAME_ENDERS "= \t\n" namespace better_enums { template _ENUM_CONSTEXPR inline T _default() { return (typename T::_enumerated)0; } template <> _ENUM_CONSTEXPR inline const char* _default() { return _ENUM_NULLPTR; } template <> _ENUM_CONSTEXPR inline std::size_t _default() { return 0; } template struct optional { _ENUM_CONSTEXPR optional() : _valid(false), _value(_default()) { } _ENUM_CONSTEXPR optional(T v) : _valid(true), _value(v) { } _ENUM_CONSTEXPR const T& operator *() const { return _value; } _ENUM_CONSTEXPR const T* operator ->() const { return &_value; } _ENUM_CONSTEXPR operator bool() const { return _valid; } _ENUM_CONSTEXPR const T& value() const { return _value; } private: bool _valid; T _value; }; template _ENUM_CONSTEXPR static optional _map_index(const Element *array, optional index) { return index ? (CastTo)array[*index] : optional(); } template _ENUM_CONSTEXPR static T _or_throw(optional maybe, const char *message) { return maybe ? *maybe : throw std::runtime_error(message); } template _ENUM_CONSTEXPR U continue_with(T ignored, U value) { return value; } template struct _eat_assign { explicit _ENUM_CONSTEXPR _eat_assign(EnumType value) : _value(value) { } template _ENUM_CONSTEXPR const _eat_assign& operator =(Any dummy) const { return *this; } _ENUM_CONSTEXPR operator EnumType () const { return _value; } private: EnumType _value; }; template struct _Iterable { typedef const Element* iterator; _ENUM_CONSTEXPR iterator begin() const { return iterator(_array); } _ENUM_CONSTEXPR iterator end() const { return iterator(_array + _size); } _ENUM_CONSTEXPR std::size_t size() const { return _size; } _ENUM_CONSTEXPR const Element& operator [](std::size_t index) const { return _array[index]; } _ENUM_CONSTEXPR _Iterable(const Element *array, std::size_t s) : _array(array), _size(s) { } private: const Element * const _array; const std::size_t _size; }; _ENUM_CONSTEXPR inline bool _endsName(char c, std::size_t index = 0) { return c == _ENUM_NAME_ENDERS[index] ? true : _ENUM_NAME_ENDERS[index] == '\0' ? false : _endsName(c, index + 1); } _ENUM_CONSTEXPR inline bool _hasExplicitValue(const char *s, std::size_t index = 0) { return s[index] == '\0' ? false : s[index] == '=' ? true : _hasExplicitValue(s, index + 1); } _ENUM_CONSTEXPR inline std::size_t _constantLength(const char *s, std::size_t index = 0) { return _endsName(s[index]) ? index : _constantLength(s, index + 1); } _ENUM_CONSTEXPR inline char _select(const char *from, std::size_t from_length, std::size_t index) { return index >= from_length ? '\0' : from[index]; } _ENUM_CONSTEXPR inline char _toLowercaseAscii(char c) { return c >= 0x41 && c <= 0x5A ? (char) (c + 0x20) : c; } _ENUM_CONSTEXPR inline bool _namesMatch(const char *stringizedName, const char *referenceName, std::size_t index = 0) { return _endsName(stringizedName[index]) ? referenceName[index] == '\0' : referenceName[index] == '\0' ? false : stringizedName[index] != referenceName[index] ? false : _namesMatch(stringizedName, referenceName, index + 1); } _ENUM_CONSTEXPR inline bool _namesMatchNocase(const char *stringizedName, const char *referenceName, std::size_t index = 0) { return _endsName(stringizedName[index]) ? referenceName[index] == '\0' : referenceName[index] == '\0' ? false : _toLowercaseAscii(stringizedName[index]) != _toLowercaseAscii(referenceName[index]) ? false : _namesMatchNocase(stringizedName, referenceName, index + 1); } inline void _trim_names(const char * const *raw_names, const char **trimmed_names, std::size_t count) { for (std::size_t index = 0; index < count; ++index) { std::size_t length = std::strcspn(raw_names[index], _ENUM_NAME_ENDERS); char *trimmed = new char[length + 1]; std::strncpy(trimmed, raw_names[index], length); trimmed[length] = '\0'; trimmed_names[index] = trimmed; } } } // namespace better_enums #ifdef _ENUM_HAVE_CONSTEXPR #define _ENUM_SELECT_SINGLE_CHARACTER(from, from_length, index) \ _select(from, from_length, index), #define _ENUM_SELECT_CHARACTERS(from, from_length) \ _ENUM_ITERATE(_ENUM_SELECT_SINGLE_CHARACTER, from, from_length) #define _ENUM_TRIM_SINGLE_STRING(ignored, index, expression) \ constexpr std::size_t _length_ ## index = _constantLength(#expression); \ constexpr const char _trimmed_ ## index [] = \ { _ENUM_SELECT_CHARACTERS(#expression, _length_ ## index) }; \ constexpr const char *_final_ ## index = \ _hasExplicitValue(#expression) ? _trimmed_ ## index : #expression; #define _ENUM_TRIM_STRINGS(...) \ _ENUM_PP_MAP(_ENUM_TRIM_SINGLE_STRING, ignored, __VA_ARGS__) #define _ENUM_REFER_TO_SINGLE_STRING(ignored, index, expression) \ _final_ ## index, #define _ENUM_REFER_TO_STRINGS(...) \ _ENUM_PP_MAP(_ENUM_REFER_TO_SINGLE_STRING, ignored, __VA_ARGS__) #endif // #ifdef _ENUM_HAVE_CONSTEXPR #define _ENUM_STRINGIZE_SINGLE(ignored, index, expression) #expression, #define _ENUM_STRINGIZE(...) \ _ENUM_PP_MAP(_ENUM_STRINGIZE_SINGLE, ignored, __VA_ARGS__) #define _ENUM_TYPE(SetUnderlyingType, SwitchType, GenerateSwitchType, \ GenerateStrings, ToStringConstexpr, \ DeclareInitialize, DefineInitialize, CallInitialize, \ Enum, Integral, ...) \ \ namespace better_enums { \ namespace _data_ ## Enum { \ \ GenerateSwitchType(Integral, __VA_ARGS__) \ \ } \ } \ \ class Enum { \ private: \ typedef better_enums::optional _optional; \ typedef better_enums::optional _optional_index; \ \ public: \ enum _enumerated SetUnderlyingType(Integral) { __VA_ARGS__ }; \ typedef Integral _integral; \ \ _ENUM_CONSTEXPR Enum(_enumerated value) : _value(value) { } \ \ _ENUM_CONSTEXPR operator SwitchType(Enum)() const \ { \ return (SwitchType(Enum))_value; \ } \ \ _ENUM_CONSTEXPR _integral _to_integral() const; \ _ENUM_CONSTEXPR static Enum _from_integral(_integral value); \ _ENUM_CONSTEXPR static Enum _from_integral_unchecked(_integral value); \ _ENUM_CONSTEXPR static _optional _from_integral_nothrow(_integral value); \ \ ToStringConstexpr const char* _to_string() const; \ _ENUM_CONSTEXPR static Enum _from_string(const char *name); \ _ENUM_CONSTEXPR static _optional _from_string_nothrow(const char *name); \ \ _ENUM_CONSTEXPR static Enum _from_string_nocase(const char *name); \ _ENUM_CONSTEXPR static _optional \ _from_string_nocase_nothrow(const char *name); \ \ _ENUM_CONSTEXPR static bool _is_valid(_integral value); \ _ENUM_CONSTEXPR static bool _is_valid(const char *name); \ _ENUM_CONSTEXPR static bool _is_valid_nocase(const char *name); \ \ typedef better_enums::_Iterable _value_iterable; \ typedef better_enums::_Iterable _name_iterable; \ \ typedef _value_iterable::iterator _value_iterator; \ typedef _name_iterable::iterator _name_iterator; \ \ _ENUM_CONSTEXPR static const std::size_t _size = \ _ENUM_PP_COUNT(__VA_ARGS__); \ \ _ENUM_CONSTEXPR static const char* _name(); \ _ENUM_CONSTEXPR static _value_iterable _values(); \ ToStringConstexpr static _name_iterable _names(); \ \ _integral _value; \ \ private: \ Enum() : _value(0) { } \ \ DeclareInitialize \ \ _ENUM_CONSTEXPR static _optional_index \ _from_int_loop(_integral value, std::size_t index = 0); \ _ENUM_CONSTEXPR static _optional_index \ _from_string_loop(const char *name, std::size_t index = 0); \ _ENUM_CONSTEXPR static _optional_index \ _from_string_nocase_loop(const char *name, std::size_t index = 0); \ }; \ \ namespace better_enums { \ namespace _data_ ## Enum { \ \ enum PutNamesInThisScopeAlso { __VA_ARGS__ }; \ \ _ENUM_CONSTEXPR const Enum value_array[] = \ { _ENUM_EAT_ASSIGN(Enum, __VA_ARGS__) }; \ \ GenerateStrings(Enum, __VA_ARGS__) \ \ } \ } \ \ _ENUM_CONSTEXPR inline const Enum operator +(Enum::_enumerated enumerated) \ { return (Enum)enumerated; } \ \ _ENUM_CONSTEXPR inline Enum::_integral Enum::_to_integral() const \ { \ return _value; \ } \ \ _ENUM_CONSTEXPR inline Enum \ Enum::_from_integral_unchecked(Enum::_integral value) \ { \ return (_enumerated)value; \ } \ \ _ENUM_CONSTEXPR inline Enum Enum::_from_integral(Enum::_integral value) \ { \ return \ better_enums::_or_throw(_from_integral_nothrow(value), \ "Enum::_from_integral: invalid argument"); \ } \ \ _ENUM_CONSTEXPR inline Enum::_optional \ Enum::_from_integral_nothrow(Enum::_integral value) \ { \ return \ better_enums::_map_index(_ENUM_NS(Enum)::value_array, \ _from_int_loop(value)); \ } \ \ ToStringConstexpr inline const char* Enum::_to_string() const \ { \ return \ better_enums::_or_throw( \ better_enums::_map_index( \ _ENUM_NS(Enum)::name_array(), \ _from_int_loop(CallInitialize(_value))), \ "Enum::to_string: invalid enum value"); \ } \ \ _ENUM_CONSTEXPR inline Enum Enum::_from_string(const char *name) \ { \ return \ better_enums::_or_throw(_from_string_nothrow(name), \ "Enum::_from_string: invalid argument"); \ } \ \ _ENUM_CONSTEXPR inline Enum::_optional \ Enum::_from_string_nothrow(const char *name) \ { \ return \ better_enums::_map_index( \ _ENUM_NS(Enum)::value_array, _from_string_loop(name)); \ } \ \ _ENUM_CONSTEXPR inline Enum Enum::_from_string_nocase(const char *name) \ { \ return \ better_enums::_or_throw(_from_string_nocase_nothrow(name), \ "Enum::_from_string_nocase: invalid argument");\ } \ \ _ENUM_CONSTEXPR inline Enum::_optional \ Enum::_from_string_nocase_nothrow(const char *name) \ { \ return \ better_enums::_map_index(_ENUM_NS(Enum)::value_array, \ _from_string_nocase_loop(name)); \ } \ \ _ENUM_CONSTEXPR inline bool Enum::_is_valid(Enum::_integral value) \ { \ return _from_int_loop(value); \ } \ \ _ENUM_CONSTEXPR inline bool Enum::_is_valid(const char *name) \ { \ return _from_string_loop(name); \ } \ \ _ENUM_CONSTEXPR inline bool Enum::_is_valid_nocase(const char *name) \ { \ return _from_string_nocase_loop(name); \ } \ \ _ENUM_CONSTEXPR inline const char* Enum::_name() \ { \ return #Enum; \ } \ \ _ENUM_CONSTEXPR inline Enum::_value_iterable Enum::_values() \ { \ return _value_iterable(_ENUM_NS(Enum)::value_array, _size); \ } \ \ ToStringConstexpr inline Enum::_name_iterable Enum::_names() \ { \ return _name_iterable(_ENUM_NS(Enum)::name_array(), CallInitialize(_size));\ } \ \ DefineInitialize(Enum) \ \ _ENUM_CONSTEXPR inline Enum::_optional_index \ Enum::_from_int_loop(Enum::_integral value, std::size_t index) \ { \ return \ index == _size ? _optional_index() : \ _ENUM_NS(Enum)::value_array[index]._value == value ? \ _optional_index(index) : \ _from_int_loop(value, index + 1); \ } \ \ _ENUM_CONSTEXPR inline Enum::_optional_index \ Enum::_from_string_loop(const char *name, std::size_t index) \ { \ return \ index == _size ? _optional_index() : \ better_enums::_namesMatch(_ENUM_NS(Enum)::raw_names()[index], name) ? \ _optional_index(index) : \ _from_string_loop(name, index + 1); \ } \ \ _ENUM_CONSTEXPR inline Enum::_optional_index \ Enum::_from_string_nocase_loop(const char *name, std::size_t index) \ { \ return \ index == _size ? _optional_index() : \ better_enums::_namesMatchNocase( \ _ENUM_NS(Enum)::raw_names()[index], name) ? \ _optional_index(index) : \ _from_string_nocase_loop(name, index + 1); \ } \ \ _ENUM_CONSTEXPR inline bool operator ==(const Enum &a, const Enum &b) \ { return a._value == b._value; } \ _ENUM_CONSTEXPR inline bool operator !=(const Enum &a, const Enum &b) \ { return a._value != b._value; } \ _ENUM_CONSTEXPR inline bool operator <(const Enum &a, const Enum &b) \ { return a._value < b._value; } \ _ENUM_CONSTEXPR inline bool operator <=(const Enum &a, const Enum &b) \ { return a._value <= b._value; } \ _ENUM_CONSTEXPR inline bool operator >(const Enum &a, const Enum &b) \ { return a._value > b._value; } \ _ENUM_CONSTEXPR inline bool operator >=(const Enum &a, const Enum &b) \ { return a._value >= b._value; } // C++98, C++11 #define _ENUM_CXX98_UNDERLYING_TYPE(Integral) // C++11 #define _ENUM_CXX11_UNDERLYING_TYPE(Integral) \ : Integral // C++98, C++11 #define _ENUM_REGULAR_ENUM_SWITCH_TYPE(Type) \ _enumerated // C++11 #define _ENUM_ENUM_CLASS_SWITCH_TYPE(Type) \ _ENUM_NS(Type)::EnumClassForSwitchStatements // C++98, C++11 #define _ENUM_REGULAR_ENUM_SWITCH_TYPE_GENERATE(Integral, ...) // C++11 #define _ENUM_ENUM_CLASS_SWITCH_TYPE_GENERATE(Integral, ...) \ enum class EnumClassForSwitchStatements : Integral { __VA_ARGS__ }; // C++98 #define _ENUM_CXX98_TRIM_STRINGS_ARRAYS(Enum, ...) \ inline const char** raw_names() \ { \ static const char *value[] = { _ENUM_STRINGIZE(__VA_ARGS__) }; \ return value; \ } \ \ inline const char** name_array() \ { \ static const char *value[Enum::_size]; \ return value; \ } \ \ inline bool& initialized() \ { \ static bool value = false; \ return value; \ } // C++11 fast version #define _ENUM_CXX11_PARTIAL_CONSTEXPR_TRIM_STRINGS_ARRAYS(Enum, ...) \ constexpr const char *the_raw_names[] = \ { _ENUM_STRINGIZE(__VA_ARGS__) }; \ \ constexpr const char * const * raw_names() \ { \ return the_raw_names; \ } \ \ inline const char** name_array() \ { \ static const char *value[Enum::_size]; \ return value; \ } \ \ inline bool& initialized() \ { \ static bool value = false; \ return value; \ } // C++11 slow all-constexpr version #define _ENUM_CXX11_FULL_CONSTEXPR_TRIM_STRINGS_ARRAYS(Enum, ...) \ _ENUM_TRIM_STRINGS(__VA_ARGS__) \ \ constexpr const char * const the_name_array[] = \ { _ENUM_REFER_TO_STRINGS(__VA_ARGS__) }; \ \ constexpr const char * const * name_array() \ { \ return the_name_array; \ } \ \ constexpr const char * const * raw_names() \ { \ return the_name_array; \ } // C++98, C++11 fast version #define _ENUM_NO_CONSTEXPR_TO_STRING_KEYWORD // C++11 slow all-constexpr version #define _ENUM_CONSTEXPR_TO_STRING_KEYWORD \ constexpr // C++98, C++11 fast version #define _ENUM_DO_DECLARE_INITIALIZE \ static int initialize(); // C++11 slow all-constexpr version #define _ENUM_DO_NOT_DECLARE_INITIALIZE // C++98, C++11 fast version #define _ENUM_DO_DEFINE_INITIALIZE(Enum) \ inline int Enum::initialize() \ { \ if (_ENUM_NS(Enum)::initialized()) \ return 0; \ \ better_enums::_trim_names(_ENUM_NS(Enum)::raw_names(), \ _ENUM_NS(Enum)::name_array(), _size); \ \ _ENUM_NS(Enum)::initialized() = true; \ \ return 0; \ } // C++11 slow all-constexpr version #define _ENUM_DO_NOT_DEFINE_INITIALIZE(Enum) // C++98, C++11 fast version #define _ENUM_DO_CALL_INITIALIZE(value) \ better_enums::continue_with(initialize(), value) // C++11 slow all-constexpr version #define _ENUM_DO_NOT_CALL_INITIALIZE(value) \ value #ifdef BETTER_ENUMS_STRICT_CONVERSION # define _ENUM_DEFAULT_SWITCH_TYPE \ _ENUM_ENUM_CLASS_SWITCH_TYPE # define _ENUM_DEFAULT_SWITCH_TYPE_GENERATE \ _ENUM_ENUM_CLASS_SWITCH_TYPE_GENERATE #else # define _ENUM_DEFAULT_SWITCH_TYPE \ _ENUM_REGULAR_ENUM_SWITCH_TYPE # define _ENUM_DEFAULT_SWITCH_TYPE_GENERATE \ _ENUM_REGULAR_ENUM_SWITCH_TYPE_GENERATE #endif #ifdef _ENUM_HAVE_CONSTEXPR #ifdef BETTER_ENUMS_CONSTEXPR_TO_STRING # define _ENUM_DEFAULT_TRIM_STRINGS_ARRAYS \ _ENUM_CXX11_FULL_CONSTEXPR_TRIM_STRINGS_ARRAYS # define _ENUM_DEFAULT_TO_STRING_KEYWORD \ _ENUM_CONSTEXPR_TO_STRING_KEYWORD # define _ENUM_DEFAULT_DECLARE_INITIALIZE \ _ENUM_DO_NOT_DECLARE_INITIALIZE # define _ENUM_DEFAULT_DEFINE_INITIALIZE \ _ENUM_DO_NOT_DEFINE_INITIALIZE # define _ENUM_DEFAULT_CALL_INITIALIZE \ _ENUM_DO_NOT_CALL_INITIALIZE #else # define _ENUM_DEFAULT_TRIM_STRINGS_ARRAYS \ _ENUM_CXX11_PARTIAL_CONSTEXPR_TRIM_STRINGS_ARRAYS # define _ENUM_DEFAULT_TO_STRING_KEYWORD \ _ENUM_NO_CONSTEXPR_TO_STRING_KEYWORD # define _ENUM_DEFAULT_DECLARE_INITIALIZE \ _ENUM_DO_DECLARE_INITIALIZE # define _ENUM_DEFAULT_DEFINE_INITIALIZE \ _ENUM_DO_DEFINE_INITIALIZE # define _ENUM_DEFAULT_CALL_INITIALIZE \ _ENUM_DO_CALL_INITIALIZE #endif #define ENUM(Enum, Integral, ...) \ _ENUM_TYPE(_ENUM_CXX11_UNDERLYING_TYPE, \ _ENUM_DEFAULT_SWITCH_TYPE, \ _ENUM_DEFAULT_SWITCH_TYPE_GENERATE, \ _ENUM_DEFAULT_TRIM_STRINGS_ARRAYS, \ _ENUM_DEFAULT_TO_STRING_KEYWORD, \ _ENUM_DEFAULT_DECLARE_INITIALIZE, \ _ENUM_DEFAULT_DEFINE_INITIALIZE, \ _ENUM_DEFAULT_CALL_INITIALIZE, \ Enum, Integral, __VA_ARGS__) #define SLOW_ENUM(Enum, Integral, ...) \ _ENUM_TYPE(_ENUM_CXX11_UNDERLYING_TYPE, \ _ENUM_DEFAULT_SWITCH_TYPE, \ _ENUM_DEFAULT_SWITCH_TYPE_GENERATE, \ _ENUM_CXX11_FULL_CONSTEXPR_TRIM_STRINGS_ARRAYS, \ _ENUM_CONSTEXPR_TO_STRING_KEYWORD, \ _ENUM_DO_NOT_DECLARE_INITIALIZE, \ _ENUM_DO_NOT_DEFINE_INITIALIZE, \ _ENUM_DO_NOT_CALL_INITIALIZE, \ Enum, Integral, __VA_ARGS__) #else #define ENUM(Enum, Integral, ...) \ _ENUM_TYPE(_ENUM_CXX98_UNDERLYING_TYPE, \ _ENUM_DEFAULT_SWITCH_TYPE, \ _ENUM_DEFAULT_SWITCH_TYPE_GENERATE, \ _ENUM_CXX98_TRIM_STRINGS_ARRAYS, \ _ENUM_NO_CONSTEXPR_TO_STRING_KEYWORD, \ _ENUM_DO_DECLARE_INITIALIZE, \ _ENUM_DO_DEFINE_INITIALIZE, \ _ENUM_DO_CALL_INITIALIZE, \ Enum, Integral, __VA_ARGS__) #endif #endif // #ifndef _BETTER_ENUMS_ENUM_H_