mirror of
https://github.com/aantron/better-enums.git
synced 2025-12-06 16:56:42 +08:00
819 lines
43 KiB
C++
819 lines
43 KiB
C++
// This file is part of Better Enums, released under the BSD 2-clause license.
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// See LICENSE for details, or visit http://github.com/aantron/better-enums.
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#pragma once
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#ifndef _BETTER_ENUMS_ENUM_H_
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#define _BETTER_ENUMS_ENUM_H_
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#include <cstddef>
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#include <cstring>
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#include <stdexcept>
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#ifdef BETTER_ENUMS_CONSTEXPR
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# define _ENUM_HAVE_CONSTEXPR
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#else
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# ifdef __GNUC__
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# ifdef __clang__
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# if __has_feature(cxx_constexpr)
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# define _ENUM_HAVE_CONSTEXPR
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# endif
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# else
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# if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6))
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# if defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L
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# define _ENUM_HAVE_CONSTEXPR
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# endif
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# endif
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# endif
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# endif
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#endif
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#ifdef BETTER_ENUMS_NO_CONSTEXPR
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# if defined(_ENUM_HAVE_CONSTEXPR)
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# undef _ENUM_HAVE_CONSTEXPR
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# endif
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#endif
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#ifdef _ENUM_HAVE_CONSTEXPR
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# define _ENUM_CONSTEXPR constexpr
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# define _ENUM_NULLPTR nullptr
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#else
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# define _ENUM_CONSTEXPR
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# define _ENUM_NULLPTR NULL
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#endif
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#ifndef __GNUC__
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# define strcasecmp stricmp
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#endif
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#ifdef BETTER_ENUMS_MACRO_FILE
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# include BETTER_ENUMS_MACRO_FILE
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#else
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#define _ENUM_PP_MAP(macro, data, ...) \
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_ENUM_ID(_ENUM_A(_ENUM_PP_MAP_VAR_COUNT, _ENUM_PP_COUNT(__VA_ARGS__)) \
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(macro, data, __VA_ARGS__))
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#define _ENUM_PP_MAP_VAR_COUNT(count) _ENUM_M ## count
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#define _ENUM_A(macro, ...) _ENUM_ID(macro(__VA_ARGS__))
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#define _ENUM_ID(x) x
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#define _ENUM_M1(m, d, x) m(d,0,x)
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#define _ENUM_M2(m,d,x,...) m(d,1,x) _ENUM_ID(_ENUM_M1(m,d,__VA_ARGS__))
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#define _ENUM_M3(m,d,x,...) m(d,2,x) _ENUM_ID(_ENUM_M2(m,d,__VA_ARGS__))
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#define _ENUM_M4(m,d,x,...) m(d,3,x) _ENUM_ID(_ENUM_M3(m,d,__VA_ARGS__))
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#define _ENUM_M5(m,d,x,...) m(d,4,x) _ENUM_ID(_ENUM_M4(m,d,__VA_ARGS__))
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#define _ENUM_M6(m,d,x,...) m(d,5,x) _ENUM_ID(_ENUM_M5(m,d,__VA_ARGS__))
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#define _ENUM_M7(m,d,x,...) m(d,6,x) _ENUM_ID(_ENUM_M6(m,d,__VA_ARGS__))
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#define _ENUM_M8(m,d,x,...) m(d,7,x) _ENUM_ID(_ENUM_M7(m,d,__VA_ARGS__))
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#define _ENUM_M9(m,d,x,...) m(d,8,x) _ENUM_ID(_ENUM_M8(m,d,__VA_ARGS__))
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#define _ENUM_M10(m,d,x,...) m(d,9,x) _ENUM_ID(_ENUM_M9(m,d,__VA_ARGS__))
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#define _ENUM_M11(m,d,x,...) m(d,10,x) _ENUM_ID(_ENUM_M10(m,d,__VA_ARGS__))
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#define _ENUM_M12(m,d,x,...) m(d,11,x) _ENUM_ID(_ENUM_M11(m,d,__VA_ARGS__))
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#define _ENUM_M13(m,d,x,...) m(d,12,x) _ENUM_ID(_ENUM_M12(m,d,__VA_ARGS__))
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#define _ENUM_M14(m,d,x,...) m(d,13,x) _ENUM_ID(_ENUM_M13(m,d,__VA_ARGS__))
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#define _ENUM_M15(m,d,x,...) m(d,14,x) _ENUM_ID(_ENUM_M14(m,d,__VA_ARGS__))
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#define _ENUM_M16(m,d,x,...) m(d,15,x) _ENUM_ID(_ENUM_M15(m,d,__VA_ARGS__))
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#define _ENUM_M17(m,d,x,...) m(d,16,x) _ENUM_ID(_ENUM_M16(m,d,__VA_ARGS__))
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#define _ENUM_M18(m,d,x,...) m(d,17,x) _ENUM_ID(_ENUM_M17(m,d,__VA_ARGS__))
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#define _ENUM_M19(m,d,x,...) m(d,18,x) _ENUM_ID(_ENUM_M18(m,d,__VA_ARGS__))
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#define _ENUM_M20(m,d,x,...) m(d,19,x) _ENUM_ID(_ENUM_M19(m,d,__VA_ARGS__))
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#define _ENUM_M21(m,d,x,...) m(d,20,x) _ENUM_ID(_ENUM_M20(m,d,__VA_ARGS__))
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#define _ENUM_M22(m,d,x,...) m(d,21,x) _ENUM_ID(_ENUM_M21(m,d,__VA_ARGS__))
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#define _ENUM_M23(m,d,x,...) m(d,22,x) _ENUM_ID(_ENUM_M22(m,d,__VA_ARGS__))
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#define _ENUM_M24(m,d,x,...) m(d,23,x) _ENUM_ID(_ENUM_M23(m,d,__VA_ARGS__))
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#define _ENUM_M25(m,d,x,...) m(d,24,x) _ENUM_ID(_ENUM_M24(m,d,__VA_ARGS__))
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#define _ENUM_M26(m,d,x,...) m(d,25,x) _ENUM_ID(_ENUM_M25(m,d,__VA_ARGS__))
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#define _ENUM_M27(m,d,x,...) m(d,26,x) _ENUM_ID(_ENUM_M26(m,d,__VA_ARGS__))
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#define _ENUM_M28(m,d,x,...) m(d,27,x) _ENUM_ID(_ENUM_M27(m,d,__VA_ARGS__))
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#define _ENUM_M29(m,d,x,...) m(d,28,x) _ENUM_ID(_ENUM_M28(m,d,__VA_ARGS__))
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#define _ENUM_M30(m,d,x,...) m(d,29,x) _ENUM_ID(_ENUM_M29(m,d,__VA_ARGS__))
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#define _ENUM_M31(m,d,x,...) m(d,30,x) _ENUM_ID(_ENUM_M30(m,d,__VA_ARGS__))
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#define _ENUM_M32(m,d,x,...) m(d,31,x) _ENUM_ID(_ENUM_M31(m,d,__VA_ARGS__))
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#define _ENUM_M33(m,d,x,...) m(d,32,x) _ENUM_ID(_ENUM_M32(m,d,__VA_ARGS__))
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#define _ENUM_M34(m,d,x,...) m(d,33,x) _ENUM_ID(_ENUM_M33(m,d,__VA_ARGS__))
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#define _ENUM_M35(m,d,x,...) m(d,34,x) _ENUM_ID(_ENUM_M34(m,d,__VA_ARGS__))
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#define _ENUM_M36(m,d,x,...) m(d,35,x) _ENUM_ID(_ENUM_M35(m,d,__VA_ARGS__))
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#define _ENUM_M37(m,d,x,...) m(d,36,x) _ENUM_ID(_ENUM_M36(m,d,__VA_ARGS__))
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#define _ENUM_M38(m,d,x,...) m(d,37,x) _ENUM_ID(_ENUM_M37(m,d,__VA_ARGS__))
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#define _ENUM_M39(m,d,x,...) m(d,38,x) _ENUM_ID(_ENUM_M38(m,d,__VA_ARGS__))
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#define _ENUM_M40(m,d,x,...) m(d,39,x) _ENUM_ID(_ENUM_M39(m,d,__VA_ARGS__))
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#define _ENUM_M41(m,d,x,...) m(d,40,x) _ENUM_ID(_ENUM_M40(m,d,__VA_ARGS__))
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#define _ENUM_M42(m,d,x,...) m(d,41,x) _ENUM_ID(_ENUM_M41(m,d,__VA_ARGS__))
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#define _ENUM_M43(m,d,x,...) m(d,42,x) _ENUM_ID(_ENUM_M42(m,d,__VA_ARGS__))
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#define _ENUM_M44(m,d,x,...) m(d,43,x) _ENUM_ID(_ENUM_M43(m,d,__VA_ARGS__))
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#define _ENUM_M45(m,d,x,...) m(d,44,x) _ENUM_ID(_ENUM_M44(m,d,__VA_ARGS__))
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#define _ENUM_M46(m,d,x,...) m(d,45,x) _ENUM_ID(_ENUM_M45(m,d,__VA_ARGS__))
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#define _ENUM_M47(m,d,x,...) m(d,46,x) _ENUM_ID(_ENUM_M46(m,d,__VA_ARGS__))
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#define _ENUM_M48(m,d,x,...) m(d,47,x) _ENUM_ID(_ENUM_M47(m,d,__VA_ARGS__))
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#define _ENUM_M49(m,d,x,...) m(d,48,x) _ENUM_ID(_ENUM_M48(m,d,__VA_ARGS__))
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#define _ENUM_M50(m,d,x,...) m(d,49,x) _ENUM_ID(_ENUM_M49(m,d,__VA_ARGS__))
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#define _ENUM_M51(m,d,x,...) m(d,50,x) _ENUM_ID(_ENUM_M50(m,d,__VA_ARGS__))
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#define _ENUM_M52(m,d,x,...) m(d,51,x) _ENUM_ID(_ENUM_M51(m,d,__VA_ARGS__))
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#define _ENUM_M53(m,d,x,...) m(d,52,x) _ENUM_ID(_ENUM_M52(m,d,__VA_ARGS__))
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#define _ENUM_M54(m,d,x,...) m(d,53,x) _ENUM_ID(_ENUM_M53(m,d,__VA_ARGS__))
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#define _ENUM_M55(m,d,x,...) m(d,54,x) _ENUM_ID(_ENUM_M54(m,d,__VA_ARGS__))
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#define _ENUM_M56(m,d,x,...) m(d,55,x) _ENUM_ID(_ENUM_M55(m,d,__VA_ARGS__))
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#define _ENUM_M57(m,d,x,...) m(d,56,x) _ENUM_ID(_ENUM_M56(m,d,__VA_ARGS__))
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#define _ENUM_M58(m,d,x,...) m(d,57,x) _ENUM_ID(_ENUM_M57(m,d,__VA_ARGS__))
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#define _ENUM_M59(m,d,x,...) m(d,58,x) _ENUM_ID(_ENUM_M58(m,d,__VA_ARGS__))
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#define _ENUM_M60(m,d,x,...) m(d,59,x) _ENUM_ID(_ENUM_M59(m,d,__VA_ARGS__))
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#define _ENUM_M61(m,d,x,...) m(d,60,x) _ENUM_ID(_ENUM_M60(m,d,__VA_ARGS__))
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#define _ENUM_M62(m,d,x,...) m(d,61,x) _ENUM_ID(_ENUM_M61(m,d,__VA_ARGS__))
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#define _ENUM_M63(m,d,x,...) m(d,62,x) _ENUM_ID(_ENUM_M62(m,d,__VA_ARGS__))
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#define _ENUM_M64(m,d,x,...) m(d,63,x) _ENUM_ID(_ENUM_M63(m,d,__VA_ARGS__))
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#define _ENUM_PP_COUNT_IMPL(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, \
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_13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, \
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_28, _29, _30, _31, _32, _33, _34, _35, _36, _37, _38, _39, _40, _41, _42, \
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_43, _44, _45, _46, _47, _48, _49, _50, _51, _52, _53, _54, _55, _56, _57, \
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_58, _59, _60, _61, _62, _63, _64, count, ...) count
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#define _ENUM_PP_COUNT(...) _ENUM_ID(_ENUM_PP_COUNT_IMPL(__VA_ARGS__, 64, 63, \
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62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 49, 48, 47, 46, 45, 44,\
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43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25,\
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24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, \
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4, 3, 2, 1))
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#define _ENUM_ITERATE(X, f, l) X(f, l, 0) X(f, l, 1) X(f, l, 2) X(f, l, 3) \
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X(f, l, 4) X(f, l, 5) X(f, l, 6) X(f, l, 7) X(f, l, 8) X(f, l, 9) \
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X(f, l, 10) X(f, l, 11) X(f, l, 12) X(f, l, 13) X(f, l, 14) X(f, l, 15) \
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X(f, l, 16) X(f, l, 17) X(f, l, 18) X(f, l, 19) X(f, l, 20) X(f, l, 21) \
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X(f, l, 22) X(f, l, 23)
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#endif // #ifdef BETTER_ENUMS_MACRO_FILE
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#define _ENUM_EAT_ASSIGN_SINGLE(EnumType, index, expression) \
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((better_enums::_eat_assign<EnumType>)EnumType::expression),
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#define _ENUM_EAT_ASSIGN(EnumType, ...) \
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_ENUM_ID(_ENUM_PP_MAP(_ENUM_EAT_ASSIGN_SINGLE, EnumType, __VA_ARGS__))
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#define _ENUM_NS(EnumType) better_enums::_data_ ## EnumType
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#define _ENUM_NAME_ENDERS "= \t\n"
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namespace better_enums {
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template <typename T>
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_ENUM_CONSTEXPR inline T _default()
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{
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return (typename T::_enumerated)0;
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}
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template <>
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_ENUM_CONSTEXPR inline const char* _default<const char*>()
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{
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return _ENUM_NULLPTR;
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}
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template <>
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_ENUM_CONSTEXPR inline std::size_t _default<std::size_t>()
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{
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return 0;
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}
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template <typename T>
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struct optional {
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_ENUM_CONSTEXPR optional() : _valid(false), _value(_default<T>()) { }
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_ENUM_CONSTEXPR optional(T v) : _valid(true), _value(v) { }
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_ENUM_CONSTEXPR const T& operator *() const { return _value; }
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_ENUM_CONSTEXPR const T* operator ->() const { return &_value; }
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_ENUM_CONSTEXPR operator bool() const { return _valid; }
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_ENUM_CONSTEXPR const T& value() const { return _value; }
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private:
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bool _valid;
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T _value;
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};
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template <typename CastTo, typename Element>
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_ENUM_CONSTEXPR static optional<CastTo>
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_map_index(const Element *array, optional<std::size_t> index)
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{
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return index ? (CastTo)array[*index] : optional<CastTo>();
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}
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template <typename T>
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_ENUM_CONSTEXPR static T _or_throw(optional<T> maybe, const char *message)
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{
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return maybe ? *maybe : throw std::runtime_error(message);
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}
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template <typename T, typename U>
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_ENUM_CONSTEXPR U continue_with(T ignored, U value) { return value; }
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template <typename EnumType>
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struct _eat_assign {
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explicit _ENUM_CONSTEXPR _eat_assign(EnumType value) : _value(value) { }
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template <typename Any>
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_ENUM_CONSTEXPR const _eat_assign& operator =(Any dummy) const
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{ return *this; }
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_ENUM_CONSTEXPR operator EnumType () const { return _value; }
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private:
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EnumType _value;
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};
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template <typename Element>
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struct _Iterable {
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typedef const Element* iterator;
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_ENUM_CONSTEXPR iterator begin() const { return iterator(_array); }
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_ENUM_CONSTEXPR iterator end() const { return iterator(_array + _size); }
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_ENUM_CONSTEXPR std::size_t size() const { return _size; }
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_ENUM_CONSTEXPR const Element& operator [](std::size_t index) const
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{ return _array[index]; }
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_ENUM_CONSTEXPR _Iterable(const Element *array, std::size_t s) :
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_array(array), _size(s) { }
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private:
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const Element * const _array;
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const std::size_t _size;
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};
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_ENUM_CONSTEXPR inline bool _endsName(char c, std::size_t index = 0)
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{
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return
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c == _ENUM_NAME_ENDERS[index] ? true :
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_ENUM_NAME_ENDERS[index] == '\0' ? false :
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_endsName(c, index + 1);
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}
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_ENUM_CONSTEXPR inline bool _hasExplicitValue(const char *s,
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std::size_t index = 0)
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{
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return
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s[index] == '\0' ? false :
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s[index] == '=' ? true :
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_hasExplicitValue(s, index + 1);
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}
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_ENUM_CONSTEXPR inline std::size_t _constantLength(const char *s,
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std::size_t index = 0)
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{
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return _endsName(s[index]) ? index : _constantLength(s, index + 1);
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}
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_ENUM_CONSTEXPR inline char _select(const char *from, std::size_t from_length,
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std::size_t index)
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{
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return index >= from_length ? '\0' : from[index];
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}
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_ENUM_CONSTEXPR inline char _toLowercaseAscii(char c)
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{
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return c >= 0x41 && c <= 0x5A ? (char)(c + 0x20) : c;
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}
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_ENUM_CONSTEXPR inline bool _namesMatch(const char *stringizedName,
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const char *referenceName,
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std::size_t index = 0)
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{
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return
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_endsName(stringizedName[index]) ? referenceName[index] == '\0' :
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referenceName[index] == '\0' ? false :
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stringizedName[index] != referenceName[index] ? false :
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_namesMatch(stringizedName, referenceName, index + 1);
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}
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_ENUM_CONSTEXPR inline bool _namesMatchNocase(const char *stringizedName,
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const char *referenceName,
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std::size_t index = 0)
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{
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return
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_endsName(stringizedName[index]) ? referenceName[index] == '\0' :
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referenceName[index] == '\0' ? false :
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_toLowercaseAscii(stringizedName[index]) !=
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_toLowercaseAscii(referenceName[index]) ? false :
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_namesMatchNocase(stringizedName, referenceName, index + 1);
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}
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inline void _trim_names(const char * const *raw_names,
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const char **trimmed_names, std::size_t count)
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{
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for (std::size_t index = 0; index < count; ++index) {
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std::size_t length = std::strcspn(raw_names[index], _ENUM_NAME_ENDERS);
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char *trimmed = new char[length + 1];
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std::strncpy(trimmed, raw_names[index], length);
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trimmed[length] = '\0';
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trimmed_names[index] = trimmed;
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}
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}
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} // namespace better_enums
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#ifdef _ENUM_HAVE_CONSTEXPR
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#define _ENUM_SELECT_SINGLE_CHARACTER(from, from_length, index) \
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_select(from, from_length, index),
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#define _ENUM_SELECT_CHARACTERS(from, from_length) \
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_ENUM_ITERATE(_ENUM_SELECT_SINGLE_CHARACTER, from, from_length)
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|
|
|
|
|
|
#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_ID(_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_ID(_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_ID(_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 { \
|
|
\
|
|
_ENUM_ID(GenerateSwitchType(Integral, __VA_ARGS__)) \
|
|
\
|
|
} \
|
|
} \
|
|
\
|
|
class Enum { \
|
|
private: \
|
|
typedef better_enums::optional<Enum> _optional; \
|
|
typedef better_enums::optional<std::size_t> _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<Enum> _value_iterable; \
|
|
typedef better_enums::_Iterable<const char*> _name_iterable; \
|
|
\
|
|
typedef _value_iterable::iterator _value_iterator; \
|
|
typedef _name_iterable::iterator _name_iterator; \
|
|
\
|
|
_ENUM_CONSTEXPR static const std::size_t _size = \
|
|
_ENUM_ID(_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_ID(_ENUM_EAT_ASSIGN(Enum, __VA_ARGS__)) }; \
|
|
\
|
|
_ENUM_ID(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>(_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<const char*>( \
|
|
_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>( \
|
|
_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>(_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_ID(_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_ID(_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_ID(_ENUM_TRIM_STRINGS(__VA_ARGS__)) \
|
|
\
|
|
constexpr const char * const the_name_array[] = \
|
|
{ _ENUM_ID(_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_ID(_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_ID(_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_ID(_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_
|