mirrors/bitcoin
1
0
Fork 0
mirror of https://github.com/bitcoin/bitcoin.git synced 2025-02-22 15:04:44 +01:00
Code Issues Projects Releases Wiki Activity

span: Add BytePtr helper

Browse source
This commit is contained in:
MarcoFalke 2022-01-02 11:19:01 +01:00
parent 8b5a4de904
commit fa65bbf217
No known key found for this signature in database
GPG key ID: CE2B75697E69A548
1 changed files with 7 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
src/span.h
View file

@ -243,16 +243,21 @@ T& SpanPopBack(Span<T>& span)
return back; return back;
} }
//! Convert a data pointer to a std::byte data pointer.
//! Where possible, please use the safer AsBytes helpers.
inline const std::byte* BytePtr(const void* data) { return reinterpret_cast<const std::byte*>(data); }
inline std::byte* BytePtr(void* data) { return reinterpret_cast<std::byte*>(data); }
// From C++20 as_bytes and as_writeable_bytes // From C++20 as_bytes and as_writeable_bytes
template <typename T> template <typename T>
Span<const std::byte> AsBytes(Span<T> s) noexcept Span<const std::byte> AsBytes(Span<T> s) noexcept
{ {
return {reinterpret_cast<const std::byte*>(s.data()), s.size_bytes()}; return {BytePtr(s.data()), s.size_bytes()};
} }
template <typename T> template <typename T>
Span<std::byte> AsWritableBytes(Span<T> s) noexcept Span<std::byte> AsWritableBytes(Span<T> s) noexcept
{ {
return {reinterpret_cast<std::byte*>(s.data()), s.size_bytes()}; return {BytePtr(s.data()), s.size_bytes()};
} }
template <typename V> template <typename V>