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Common/BitUtils: Add overloads of AsU8Span/AsWritableU8Span that handle conversions from contiguous ranges.

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This commit is contained in:
Jordan Woyak 2025-10-29 20:26:33 -05:00
parent 405baed805
commit b98acb9a37
1 changed files with 20 additions and 2 deletions
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22
Source/Core/Common/BitUtils.h
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@ -255,15 +255,33 @@ T ExpandValue(T value, size_t left_shift_amount)
(T(-ExtractBit<0>(value)) >> (BitSize<T>() - left_shift_amount));
}
// Convert a contiguous range of a trivially-copyable type to a `span<const u8>`
template <std::ranges::contiguous_range T>
requires(std::is_trivially_copyable_v<std::ranges::range_value_t<T>>)
constexpr auto AsU8Span(const T& range)
{
return std::span{reinterpret_cast<const u8*>(range.data()), range.size() * sizeof(*range.data())};
}
// Convert a contiguous range of a non-const trivially-copyable type to a `span<u8>`
template <std::ranges::contiguous_range T>
requires(std::is_trivially_copyable_v<std::ranges::range_value_t<T>>)
constexpr auto AsWritableU8Span(T& range)
{
return std::span{reinterpret_cast<u8*>(range.data()), range.size() * sizeof(*range.data())};
}
// Convert a trivially-copyable object to a `span<const u8>`
template <typename T>
requires(std::is_trivially_copyable_v<T>)
requires(!std::ranges::contiguous_range<T> && std::is_trivially_copyable_v<T>)
constexpr auto AsU8Span(const T& obj)
{
return std::span{reinterpret_cast<const u8*>(std::addressof(obj)), sizeof(obj)};
}
// Convert a non-const trivially-copyable object to a `span<u8>`
template <typename T>
requires(std::is_trivially_copyable_v<T>)
requires(!std::ranges::contiguous_range<T> && std::is_trivially_copyable_v<T>)
constexpr auto AsWritableU8Span(T& obj)
{
return std::span{reinterpret_cast<u8*>(std::addressof(obj)), sizeof(obj)};