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Use boost::data in boost::span

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This commit is contained in:
Glen Fernandes 2023-02-20 23:05:28 -05:00
parent 94628cb2f9
commit c4e420f69d
1 changed files with 6 additions and 28 deletions
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34
include/boost/core/span.hpp
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@ -8,11 +8,10 @@ Distributed under the Boost Software License, Version 1.0.
#ifndef BOOST_CORE_SPAN_HPP
#define BOOST_CORE_SPAN_HPP
#include <boost/core/data.hpp>
#include <array>
#include <initializer_list>
#include <iterator>
#include <type_traits>
#include <cstddef>
namespace boost {
@ -63,29 +62,8 @@ struct span_is_array<std::array<T, N> > {
static constexpr bool value = true;
};
template<class C>
inline constexpr auto
span_begin(C& c) noexcept(noexcept(c.data())) -> decltype(c.data())
{
return c.data();
}
template<class C>
inline constexpr auto
span_begin(const C& c) noexcept(noexcept(c.data())) -> decltype(c.data())
{
return c.data();
}
template<class T>
inline constexpr const T*
span_begin(std::initializer_list<T> l) noexcept
{
return l.begin();
}
template<class T>
using span_ptr = decltype(boost::detail::span_begin(std::declval<T&>()));
using span_ptr = decltype(boost::data(std::declval<T&>()));
template<class, class = void>
struct span_data { };
@ -245,16 +223,16 @@ public:
template<class R,
typename std::enable_if<E == dynamic_extent &&
detail::span_is_range<R, T>::value, int>::type = 0>
constexpr span(R&& r) noexcept(noexcept(detail::span_begin(r)) &&
constexpr span(R&& r) noexcept(noexcept(boost::data(r)) &&
noexcept(r.size()))
: s_(detail::span_begin(r), r.size()) { }
: s_(boost::data(r), r.size()) { }
template<class R,
typename std::enable_if<E != dynamic_extent &&
detail::span_is_range<R, T>::value, int>::type = 0>
explicit constexpr span(R&& r) noexcept(noexcept(detail::span_begin(r)) &&
explicit constexpr span(R&& r) noexcept(noexcept(boost::data(r)) &&
noexcept(r.size()))
: s_(detail::span_begin(r), r.size()) { }
: s_(boost::data(r), r.size()) { }
template<class U, std::size_t N,
typename std::enable_if<detail::span_implicit<E, N>::value &&