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mdbx++: add three-way comparison for mdbx::slice, mdbx::buffer and mdbx::pair.

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Леонид Юрьев (Leonid Yuriev)
2025-11-16 21:26:32 +03:00
parent 73215bdcc7
commit 5598ec9a98
1 changed files with 18 additions and 0 deletions
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18
mdbx.h++
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@@ -1000,6 +1000,9 @@ struct LIBMDBX_API_TYPE slice : public ::MDBX_val {
friend MDBX_CXX14_CONSTEXPR bool operator<=(const slice &a, const slice &b) noexcept;
friend MDBX_CXX14_CONSTEXPR bool operator>=(const slice &a, const slice &b) noexcept;
friend MDBX_CXX14_CONSTEXPR bool operator!=(const slice &a, const slice &b) noexcept;
#if defined(__cpp_impl_three_way_comparison) && __cpp_impl_three_way_comparison >= 201907L
friend MDBX_CXX14_CONSTEXPR auto operator<=>(const slice &a, const slice &b) noexcept;
#endif /* __cpp_impl_three_way_comparison */
/// \brief Checks the slice is not refers to null address or has zero length.
MDBX_CXX11_CONSTEXPR bool is_valid() const noexcept { return !(iov_base == nullptr && iov_len != 0); }
@@ -2756,6 +2759,9 @@ struct pair {
friend MDBX_CXX14_CONSTEXPR bool operator<=(const pair &a, const pair &b) noexcept;
friend MDBX_CXX14_CONSTEXPR bool operator>=(const pair &a, const pair &b) noexcept;
friend MDBX_CXX14_CONSTEXPR bool operator!=(const pair &a, const pair &b) noexcept;
#if defined(__cpp_impl_three_way_comparison) && __cpp_impl_three_way_comparison >= 201907L
friend MDBX_CXX14_CONSTEXPR auto operator<=>(const pair &a, const pair &b) noexcept;
#endif /* __cpp_impl_three_way_comparison */
};
/// \brief Combines pair of slices for key and value with boolean flag to
@@ -5014,6 +5020,12 @@ MDBX_NOTHROW_PURE_FUNCTION MDBX_CXX14_CONSTEXPR bool operator!=(const slice &a,
return slice::compare_fast(a, b) != 0;
}
#if defined(__cpp_impl_three_way_comparison) && __cpp_impl_three_way_comparison >= 201907L
MDBX_NOTHROW_PURE_FUNCTION MDBX_CXX14_CONSTEXPR auto operator<=>(const slice &a, const slice &b) noexcept {
return slice::compare_lexicographically(a, b);
}
#endif /* __cpp_impl_three_way_comparison */
template <class ALLOCATOR>
inline string<ALLOCATOR> slice::as_hex_string(bool uppercase, unsigned wrap_width, const ALLOCATOR &allocator) const {
return to_hex(*this, uppercase, wrap_width).as_string<ALLOCATOR>(allocator);
@@ -5112,6 +5124,12 @@ MDBX_NOTHROW_PURE_FUNCTION MDBX_CXX14_CONSTEXPR bool operator!=(const pair &a, c
memcmp(a.value.data(), b.value.data(), a.value.length()) != 0;
}
#if defined(__cpp_impl_three_way_comparison) && __cpp_impl_three_way_comparison >= 201907L
MDBX_NOTHROW_PURE_FUNCTION MDBX_CXX14_CONSTEXPR auto operator<=>(const pair &a, const pair &b) noexcept {
return pair::compare_lexicographically(a, b);
}
#endif /* __cpp_impl_three_way_comparison */
//------------------------------------------------------------------------------
template <class ALLOCATOR, typename CAPACITY_POLICY>