diff options
Diffstat (limited to 'mfbt/Span.h')
| -rw-r--r-- | mfbt/Span.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/mfbt/Span.h b/mfbt/Span.h index d9ba1af220..ca754f3810 100644 --- a/mfbt/Span.h +++ b/mfbt/Span.h @@ -41,6 +41,9 @@ namespace mozilla { template <typename T, size_t Length> class Array; +template <typename Enum, typename T, size_t Length> +class EnumeratedArray; + // Stuff from gsl_util // narrow_cast(): a searchable way to do narrowing casts of values @@ -488,6 +491,23 @@ class Span { : storage_(&aArr[0], span_details::extent_type<N>()) {} /** + * Constructor for mozilla::EnumeratedArray. + */ + template <size_t N, class Enum, + class ArrayElementType = std::remove_const_t<element_type>> + constexpr MOZ_IMPLICIT Span( + mozilla::EnumeratedArray<Enum, ArrayElementType, N>& aArr) + : storage_(&aArr[Enum(0)], span_details::extent_type<N>()) {} + + /** + * Constructor for const mozilla::EnumeratedArray. + */ + template <size_t N, class Enum> + constexpr MOZ_IMPLICIT Span(const mozilla::EnumeratedArray< + Enum, std::remove_const_t<element_type>, N>& aArr) + : storage_(&aArr[Enum(0)], span_details::extent_type<N>()) {} + + /** * Constructor for mozilla::UniquePtr holding an array and length. */ template <class ArrayElementType = std::add_pointer<element_type>, @@ -852,6 +872,12 @@ Span(mozilla::Array<T, Extent>&) -> Span<T, Extent>; template <typename T, size_t Extent> Span(const mozilla::Array<T, Extent>&) -> Span<const T, Extent>; +template <typename Enum, typename T, size_t Extent> +Span(mozilla::EnumeratedArray<Enum, T, Extent>&) -> Span<T, Extent>; + +template <typename Enum, typename T, size_t Extent> +Span(const mozilla::EnumeratedArray<Enum, T, Extent>&) -> Span<const T, Extent>; + // [Span.comparison], Span comparison operators template <class ElementType, size_t FirstExtent, size_t SecondExtent> inline constexpr bool operator==(const Span<ElementType, FirstExtent>& l, |