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mdbx++: добавление is_xyz() для key_mode и value_mode.

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Леонид Юрьев (Leonid Yuriev) 2023-11-21 15:18:16 +03:00
parent 55142d8d6f
commit 355090f02e
1 changed files with 54 additions and 8 deletions
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62
mdbx.h++
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@ -3119,6 +3119,26 @@ enum class key_mode {
///< \note Not yet implemented and PRs are welcome.
};
MDBX_CXX01_CONSTEXPR_ENUM bool is_usual(key_mode mode) noexcept {
return (MDBX_db_flags_t(mode) & (MDBX_REVERSEKEY | MDBX_INTEGERKEY)) == 0;
}
MDBX_CXX01_CONSTEXPR_ENUM bool is_ordinal(key_mode mode) noexcept {
return (MDBX_db_flags_t(mode) & MDBX_INTEGERKEY) != 0;
}
MDBX_CXX01_CONSTEXPR_ENUM bool is_samelength(key_mode mode) noexcept {
return (MDBX_db_flags_t(mode) & MDBX_INTEGERKEY) != 0;
}
MDBX_CXX01_CONSTEXPR_ENUM bool is_reverse(key_mode mode) noexcept {
return (MDBX_db_flags_t(mode) & MDBX_REVERSEKEY) != 0;
}
MDBX_CXX01_CONSTEXPR_ENUM bool is_msgpack(key_mode mode) noexcept {
return mode == key_mode::msgpack;
}
/// \brief Kind of the values and sorted multi-values with corresponding
/// comparison.
enum class value_mode {
@ -3171,6 +3191,15 @@ enum class value_mode {
///< end of the keys to the beginning. In terms of keys,
///< they are not unique, i.e. has duplicates which are
///< sorted by associated data values.
#else
multi_reverse = uint32_t(MDBX_DUPSORT) | uint32_t(MDBX_REVERSEDUP),
multi_samelength = uint32_t(MDBX_DUPSORT) | uint32_t(MDBX_DUPFIXED),
multi_ordinal = uint32_t(MDBX_DUPSORT) | uint32_t(MDBX_DUPFIXED) |
uint32_t(MDBX_INTEGERDUP),
multi_reverse_samelength = uint32_t(MDBX_DUPSORT) |
uint32_t(MDBX_REVERSEDUP) |
uint32_t(MDBX_DUPFIXED),
#endif
msgpack = -1 ///< A more than one data value could be associated with each
///< key. Values are in [MessagePack](https://msgpack.org/)
///< format with appropriate comparison. Internally each key is
@ -3178,16 +3207,33 @@ enum class value_mode {
///< In terms of keys, they are not unique, i.e. has duplicates
///< which are sorted by associated data values.
///< \note Not yet implemented and PRs are welcome.
#else
multi_reverse = uint32_t(MDBX_DUPSORT) | uint32_t(MDBX_REVERSEDUP),
multi_samelength = uint32_t(MDBX_DUPSORT) | uint32_t(MDBX_DUPFIXED),
multi_ordinal = uint32_t(MDBX_DUPSORT) | uint32_t(MDBX_DUPFIXED) |
uint32_t(MDBX_INTEGERDUP),
multi_reverse_samelength = uint32_t(MDBX_DUPSORT) |
uint32_t(MDBX_REVERSEDUP) | uint32_t(MDBX_DUPFIXED)
#endif
};
MDBX_CXX01_CONSTEXPR_ENUM bool is_usual(value_mode mode) noexcept {
return (MDBX_db_flags_t(mode) & (MDBX_DUPSORT | MDBX_INTEGERDUP |
MDBX_DUPFIXED | MDBX_REVERSEDUP)) == 0;
}
MDBX_CXX01_CONSTEXPR_ENUM bool is_multi(value_mode mode) noexcept {
return (MDBX_db_flags_t(mode) & MDBX_DUPSORT) != 0;
}
MDBX_CXX01_CONSTEXPR_ENUM bool is_ordinal(value_mode mode) noexcept {
return (MDBX_db_flags_t(mode) & MDBX_INTEGERDUP) != 0;
}
MDBX_CXX01_CONSTEXPR_ENUM bool is_samelength(value_mode mode) noexcept {
return (MDBX_db_flags_t(mode) & MDBX_DUPFIXED) != 0;
}
MDBX_CXX01_CONSTEXPR_ENUM bool is_reverse(value_mode mode) noexcept {
return (MDBX_db_flags_t(mode) & MDBX_REVERSEDUP) != 0;
}
MDBX_CXX01_CONSTEXPR_ENUM bool is_msgpack(value_mode mode) noexcept {
return mode == value_mode::msgpack;
}
/// \brief A handle for an individual database (key-value spaces) in the
/// environment.
/// \see txn::open_map() \see txn::create_map()