diff options
Diffstat (limited to 'contrib/epee/include/span.h')
| -rw-r--r-- | contrib/epee/include/span.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/contrib/epee/include/span.h b/contrib/epee/include/span.h index 82936a777..bbd5d690c 100644 --- a/contrib/epee/include/span.h +++ b/contrib/epee/include/span.h @@ -147,6 +147,16 @@ namespace epee return {reinterpret_cast<const std::uint8_t*>(src.data()), src.size_bytes()}; } + //! \return `span<std::uint8_t>` from a STL compatible `src`. + template<typename T> + constexpr span<std::uint8_t> to_mut_byte_span(T& src) + { + using value_type = typename T::value_type; + static_assert(!std::is_empty<value_type>(), "empty value types will not work -> sizeof == 1"); + static_assert(!has_padding<value_type>(), "source value type may have padding"); + return {reinterpret_cast<std::uint8_t*>(src.data()), src.size() * sizeof(value_type)}; + } + //! \return `span<const std::uint8_t>` which represents the bytes at `&src`. template<typename T> span<const std::uint8_t> as_byte_span(const T& src) noexcept |