mirror of
https://github.com/microsoft/GSL.git
synced 2024-11-03 17:56:43 -05:00
implement LWG3320 by deleting const_iterator and const_reverse_iterator
This commit is contained in:
Jordan Maples
parent
044849d6fa
commit
7341c5d1b5
@ -403,9 +403,7 @@ public:
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using difference_type = std::ptrdiff_t;
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using iterator = details::span_iterator<ElementType>;
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using const_iterator = details::span_iterator<const ElementType>;
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using reverse_iterator = std::reverse_iterator<iterator>;
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using const_reverse_iterator = std::reverse_iterator<const_iterator>;
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#if defined(GSL_USE_STATIC_CONSTEXPR_WORKAROUND)
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static constexpr const size_type extent{Extent};
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@ -594,31 +592,9 @@ public:
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return {data, endData, endData};
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}
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constexpr const_iterator cbegin() const noexcept
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{
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const auto data = storage_.data();
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return {data, data + size(), data};
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}
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constexpr const_iterator cend() const noexcept
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{
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const auto data = storage_.data();
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const auto endData = data + storage_.size();
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return {data, endData, endData};
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}
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constexpr reverse_iterator rbegin() const noexcept { return reverse_iterator{end()}; }
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constexpr reverse_iterator rend() const noexcept { return reverse_iterator{begin()}; }
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constexpr const_reverse_iterator crbegin() const noexcept
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{
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return const_reverse_iterator{cend()};
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}
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constexpr const_reverse_iterator crend() const noexcept
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{
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return const_reverse_iterator{cbegin()};
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}
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#ifdef _MSC_VER
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// Tell MSVC how to unwrap spans in range-based-for
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constexpr pointer _Unchecked_begin() const noexcept { return data(); }
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@ -151,20 +151,6 @@ end(const span<ElementType, Extent>& s) noexcept
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return s.end();
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}
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template <class ElementType, std::size_t Extent>
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constexpr typename span<ElementType, Extent>::const_iterator
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cbegin(const span<ElementType, Extent>& s) noexcept
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{
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return s.cbegin();
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}
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template <class ElementType, std::size_t Extent>
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constexpr typename span<ElementType, Extent>::const_iterator
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cend(const span<ElementType, Extent>& s) noexcept
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{
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return s.cend();
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}
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template <class ElementType, std::size_t Extent>
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constexpr typename span<ElementType, Extent>::reverse_iterator
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rbegin(const span<ElementType, Extent>& s) noexcept
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@ -179,20 +165,6 @@ rend(const span<ElementType, Extent>& s) noexcept
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return s.rend();
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}
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template <class ElementType, std::size_t Extent>
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constexpr typename span<ElementType, Extent>::const_reverse_iterator
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crbegin(const span<ElementType, Extent>& s) noexcept
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{
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return s.crbegin();
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}
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template <class ElementType, std::size_t Extent>
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constexpr typename span<ElementType, Extent>::const_reverse_iterator
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crend(const span<ElementType, Extent>& s) noexcept
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{
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return s.crend();
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}
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} // namespace gsl
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#endif // GSL_SPAN_EXT_H
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@ -186,9 +186,7 @@ public:
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using size_type = typename impl_type::size_type;
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using iterator = typename impl_type::iterator;
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using const_iterator = typename impl_type::const_iterator;
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using reverse_iterator = typename impl_type::reverse_iterator;
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using const_reverse_iterator = typename impl_type::const_reverse_iterator;
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// default (empty)
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constexpr basic_string_span() noexcept = default;
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@ -304,15 +302,9 @@ public:
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constexpr iterator begin() const noexcept { return span_.begin(); }
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constexpr iterator end() const noexcept { return span_.end(); }
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constexpr const_iterator cbegin() const noexcept { return span_.cbegin(); }
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constexpr const_iterator cend() const noexcept { return span_.cend(); }
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constexpr reverse_iterator rbegin() const noexcept { return span_.rbegin(); }
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constexpr reverse_iterator rend() const noexcept { return span_.rend(); }
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constexpr const_reverse_iterator crbegin() const noexcept { return span_.crbegin(); }
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constexpr const_reverse_iterator crend() const noexcept { return span_.crend(); }
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private:
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static impl_type remove_z(pointer const& sz, std::size_t max)
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{
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@ -387,12 +387,8 @@ TEST(span_compatibility_tests, assertion_tests)
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static_assert(noexcept(sp_dyn.data()), "noexcept(sp_dyn.data())");
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static_assert(noexcept(sp_dyn.begin()), "noexcept(sp_dyn.begin())");
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static_assert(noexcept(sp_dyn.end()), "noexcept(sp_dyn.end())");
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static_assert(noexcept(sp_dyn.cbegin()), "noexcept(sp_dyn.cbegin())");
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static_assert(noexcept(sp_dyn.cend()), "noexcept(sp_dyn.cend())");
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static_assert(noexcept(sp_dyn.rbegin()), "noexcept(sp_dyn.rbegin())");
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static_assert(noexcept(sp_dyn.rend()), "noexcept(sp_dyn.rend())");
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static_assert(noexcept(sp_dyn.crbegin()), "noexcept(sp_dyn.crbegin())");
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static_assert(noexcept(sp_dyn.crend()), "noexcept(sp_dyn.crend())");
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static_assert(noexcept(sp_nine.size()), "noexcept(sp_nine.size())");
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static_assert(noexcept(sp_nine.size_bytes()), "noexcept(sp_nine.size_bytes())");
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@ -403,12 +399,8 @@ TEST(span_compatibility_tests, assertion_tests)
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static_assert(noexcept(sp_nine.data()), "noexcept(sp_nine.data())");
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static_assert(noexcept(sp_nine.begin()), "noexcept(sp_nine.begin())");
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static_assert(noexcept(sp_nine.end()), "noexcept(sp_nine.end())");
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static_assert(noexcept(sp_nine.cbegin()), "noexcept(sp_nine.cbegin())");
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static_assert(noexcept(sp_nine.cend()), "noexcept(sp_nine.cend())");
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static_assert(noexcept(sp_nine.rbegin()), "noexcept(sp_nine.rbegin())");
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static_assert(noexcept(sp_nine.rend()), "noexcept(sp_nine.rend())");
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static_assert(noexcept(sp_nine.crbegin()), "noexcept(sp_nine.crbegin())");
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static_assert(noexcept(sp_nine.crend()), "noexcept(sp_nine.crend())");
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EXPECT_TRUE(sp_dyn.size() == 9);
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EXPECT_TRUE(sp_nine.size() == 9);
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@ -446,24 +438,12 @@ TEST(span_compatibility_tests, assertion_tests)
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EXPECT_TRUE(sp_dyn.end()[-2] == 80);
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EXPECT_TRUE(sp_nine.end()[-2] == 80);
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EXPECT_TRUE(*sp_dyn.cbegin() == 10);
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EXPECT_TRUE(*sp_nine.cbegin() == 10);
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EXPECT_TRUE(sp_dyn.cend()[-2] == 80);
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EXPECT_TRUE(sp_nine.cend()[-2] == 80);
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EXPECT_TRUE(*sp_dyn.rbegin() == 90);
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EXPECT_TRUE(*sp_nine.rbegin() == 90);
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EXPECT_TRUE(sp_dyn.rend()[-2] == 20);
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EXPECT_TRUE(sp_nine.rend()[-2] == 20);
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EXPECT_TRUE(*sp_dyn.crbegin() == 90);
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EXPECT_TRUE(*sp_nine.crbegin() == 90);
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EXPECT_TRUE(sp_dyn.crend()[-2] == 20);
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EXPECT_TRUE(sp_nine.crend()[-2] == 20);
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static_assert(is_same<decltype(sp_dyn.begin()), gsl::span<int>::iterator>::value,
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"is_same<decltype(sp_dyn.begin()), gsl::span<int>::iterator>::value");
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static_assert(is_same<decltype(sp_nine.begin()), gsl::span<int, 9>::iterator>::value,
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@ -472,16 +452,6 @@ TEST(span_compatibility_tests, assertion_tests)
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"is_same<decltype(sp_dyn.end()), gsl::span<int>::iterator>::value");
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static_assert(is_same<decltype(sp_nine.end()), gsl::span<int, 9>::iterator>::value,
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"is_same<decltype(sp_nine.end()), gsl::span<int, 9>::iterator>::value");
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static_assert(is_same<decltype(sp_dyn.cbegin()), gsl::span<int>::const_iterator>::value,
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"is_same<decltype(sp_dyn.cbegin()), gsl::span<int>::const_iterator>::value");
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static_assert(
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is_same<decltype(sp_nine.cbegin()), gsl::span<int, 9>::const_iterator>::value,
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"is_same<decltype(sp_nine.cbegin()), gsl::span<int, 9>::const_iterator>::value");
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static_assert(is_same<decltype(sp_dyn.cend()), gsl::span<int>::const_iterator>::value,
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"is_same<decltype(sp_dyn.cend()), gsl::span<int>::const_iterator>::value");
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static_assert(
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is_same<decltype(sp_nine.cend()), gsl::span<int, 9>::const_iterator>::value,
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"is_same<decltype(sp_nine.cend()), gsl::span<int, 9>::const_iterator>::value");
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static_assert(
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is_same<decltype(sp_dyn.rbegin()), gsl::span<int>::reverse_iterator>::value,
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"is_same<decltype(sp_dyn.rbegin()), gsl::span<int>::reverse_iterator>::value");
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@ -493,19 +463,6 @@ TEST(span_compatibility_tests, assertion_tests)
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static_assert(
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is_same<decltype(sp_nine.rend()), gsl::span<int, 9>::reverse_iterator>::value,
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"is_same<decltype(sp_nine.rend()), gsl::span<int, 9>::reverse_iterator>::value");
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static_assert(
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is_same<decltype(sp_dyn.crbegin()), gsl::span<int>::const_reverse_iterator>::value,
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"is_same<decltype(sp_dyn.crbegin()), gsl::span<int>::const_reverse_iterator>::value");
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static_assert(
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is_same<decltype(sp_nine.crbegin()), gsl::span<int, 9>::const_reverse_iterator>::value,
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"is_same<decltype(sp_nine.crbegin()), gsl::span<int, "
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"9>::const_reverse_iterator>::value");
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static_assert(
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is_same<decltype(sp_dyn.crend()), gsl::span<int>::const_reverse_iterator>::value,
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"is_same<decltype(sp_dyn.crend()), gsl::span<int>::const_reverse_iterator>::value");
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static_assert(
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is_same<decltype(sp_nine.crend()), gsl::span<int, 9>::const_reverse_iterator>::value,
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"is_same<decltype(sp_nine.crend()), gsl::span<int, 9>::const_reverse_iterator>::value");
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}
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{
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int sequence[9]{10, 20, 30, 40, 50, 60, 70, 80, 90};
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@ -646,90 +603,54 @@ static_assert(std::is_same<gsl::span<const int, 3>::const_reference, const int&>
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// assertions for span_iterator
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static_assert(std::is_same<std::iterator_traits<gsl::span<int>::iterator>::pointer, int*>::value,
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"span<int>::iterator's pointer should be int*");
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static_assert(
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std::is_same<std::iterator_traits<gsl::span<int>::const_iterator>::pointer, const int*>::value,
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"span<int>::const_iterator's pointer should be const int*");
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static_assert(
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std::is_same<gsl::span<int>::reverse_iterator,
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std::reverse_iterator<gsl::span<int>::iterator>>::value,
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"span<int>::reverse_iterator should equal std::reverse_iterator<span<int>::iterator>");
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static_assert(std::is_same<gsl::span<int>::const_reverse_iterator,
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std::reverse_iterator<gsl::span<int>::const_iterator>>::value,
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"span<int>::const_reverse_iterator should equal "
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"std::reverse_iterator<span<int>::const_iterator>");
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static_assert(std::is_same<std::iterator_traits<gsl::span<int, 3>::iterator>::pointer, int*>::value,
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"span<int, 3>::iterator's pointer should be int*");
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static_assert(std::is_same<std::iterator_traits<gsl::span<int, 3>::const_iterator>::pointer,
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const int*>::value,
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"span<int, 3>::const_iterator's pointer should be const int*");
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static_assert(
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std::is_same<gsl::span<int, 3>::reverse_iterator,
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std::reverse_iterator<gsl::span<int, 3>::iterator>>::value,
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"span<int, 3>::reverse_iterator should equal std::reverse_iterator<span<int, 3>::iterator>");
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static_assert(std::is_same<gsl::span<int, 3>::const_reverse_iterator,
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std::reverse_iterator<gsl::span<int, 3>::const_iterator>>::value,
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"span<int, 3>::const_reverse_iterator should equal std::reverse_iterator<span<int, "
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"3>::const_iterator>");
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static_assert(
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std::is_same<std::iterator_traits<gsl::span<const int>::iterator>::pointer, const int*>::value,
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"span<const int>::iterator's pointer should be int*");
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static_assert(std::is_same<std::iterator_traits<gsl::span<const int>::const_iterator>::pointer,
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const int*>::value,
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"span<const int>::const_iterator's pointer should be const int*");
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static_assert(std::is_same<gsl::span<const int>::reverse_iterator,
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std::reverse_iterator<gsl::span<const int>::iterator>>::value,
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"span<const int>::reverse_iterator should equal std::reverse_iterator<span<const "
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"int>::iterator>");
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static_assert(std::is_same<gsl::span<const int>::const_reverse_iterator,
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std::reverse_iterator<gsl::span<const int>::const_iterator>>::value,
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"span<const int>::const_reverse_iterator should equal "
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"std::reverse_iterator<span<const int>::const_iterator>");
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static_assert(std::is_same<std::iterator_traits<gsl::span<const int, 3>::iterator>::pointer,
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const int*>::value,
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"span<const int, 3>::iterator's pointer should be int*");
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static_assert(std::is_same<std::iterator_traits<gsl::span<const int, 3>::const_iterator>::pointer,
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const int*>::value,
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"span<const int, 3>::const_iterator's pointer should be const int*");
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static_assert(std::is_same<gsl::span<const int, 3>::reverse_iterator,
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std::reverse_iterator<gsl::span<const int, 3>::iterator>>::value,
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"span<const int, 3>::reverse_iterator should equal std::reverse_iterator<span<const "
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"int, 3>::iterator>");
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static_assert(std::is_same<gsl::span<const int, 3>::const_reverse_iterator,
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std::reverse_iterator<gsl::span<const int, 3>::const_iterator>>::value,
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"span<const int, 3>::const_reverse_iterator should equal "
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"std::reverse_iterator<span<const int, 3>::const_iterator>");
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// copyability assertions
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static_assert(std::is_trivially_copyable<gsl::span<int>>::value,
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"span<int> should be trivially copyable");
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static_assert(std::is_trivially_copyable<gsl::span<int>::iterator>::value,
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"span<int>::iterator should be trivially copyable");
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static_assert(std::is_trivially_copyable<gsl::span<int>::const_iterator>::value,
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"span<int>::const_iterator should be trivially copyable");
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static_assert(std::is_trivially_copyable<gsl::span<int, 3>>::value,
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"span<int, 3> should be trivially copyable");
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static_assert(std::is_trivially_copyable<gsl::span<int, 3>::iterator>::value,
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"span<int, 3>::iterator should be trivially copyable");
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static_assert(std::is_trivially_copyable<gsl::span<int, 3>::const_iterator>::value,
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"span<int, 3>::const_iterator should be trivially copyable");
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static_assert(std::is_trivially_copyable<gsl::span<const int>>::value,
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"span<const int> should be trivially copyable");
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static_assert(std::is_trivially_copyable<gsl::span<const int>::iterator>::value,
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"span<const int>::iterator should be trivially copyable");
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static_assert(std::is_trivially_copyable<gsl::span<const int>::const_iterator>::value,
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"span<const int>::const_iterator should be trivially copyable");
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static_assert(std::is_trivially_copyable<gsl::span<const int, 3>>::value,
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"span<const int, 3> should be trivially copyable");
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static_assert(std::is_trivially_copyable<gsl::span<const int, 3>::iterator>::value,
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"span<const int, 3>::iterator should be trivially copyable");
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static_assert(std::is_trivially_copyable<gsl::span<const int, 3>::const_iterator>::value,
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"span<const int, 3>::const_iterator should be trivially copyable");
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// nothrow constructible assertions
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static_assert(std::is_nothrow_constructible<gsl::span<int>, int*, std::size_t>::value,
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@ -208,26 +208,14 @@ TEST(span_ext_test, make_span_from_array_constructor)
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EXPECT_TRUE((std::is_same<decltype(s.begin()), decltype(begin(s))>::value));
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EXPECT_TRUE((std::is_same<decltype(s.end()), decltype(end(s))>::value));
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EXPECT_TRUE((std::is_same<decltype(s.cbegin()), decltype(cbegin(s))>::value));
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EXPECT_TRUE((std::is_same<decltype(s.cend()), decltype(cend(s))>::value));
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EXPECT_TRUE((std::is_same<decltype(s.rbegin()), decltype(rbegin(s))>::value));
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EXPECT_TRUE((std::is_same<decltype(s.rend()), decltype(rend(s))>::value));
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EXPECT_TRUE((std::is_same<decltype(s.crbegin()), decltype(crbegin(s))>::value));
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EXPECT_TRUE((std::is_same<decltype(s.crend()), decltype(crend(s))>::value));
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EXPECT_TRUE(s.begin() == begin(s));
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EXPECT_TRUE(s.end() == end(s));
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EXPECT_TRUE(s.cbegin() == cbegin(s));
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EXPECT_TRUE(s.cend() == cend(s));
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EXPECT_TRUE(s.rbegin() == rbegin(s));
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EXPECT_TRUE(s.rend() == rend(s));
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EXPECT_TRUE(s.crbegin() == crbegin(s));
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EXPECT_TRUE(s.crend() == crend(s));
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}
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TEST(span_ext_test, ssize_free_function)
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@ -864,34 +864,6 @@ TEST(span_test, from_array_constructor)
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EXPECT_TRUE(it1 == it2);
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}
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TEST(span_test, const_iterator_default_init)
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{
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span<int>::const_iterator it1;
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span<int>::const_iterator it2;
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EXPECT_TRUE(it1 == it2);
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}
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TEST(span_test, iterator_conversions)
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{
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span<int>::iterator badIt;
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span<int>::const_iterator badConstIt;
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EXPECT_TRUE(badIt == badConstIt);
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int a[] = {1, 2, 3, 4};
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span<int> s = a;
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auto it = s.begin();
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auto cit = s.cbegin();
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EXPECT_TRUE(it == cit);
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EXPECT_TRUE(cit == it);
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span<int>::const_iterator cit2 = it;
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EXPECT_TRUE(cit2 == cit);
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span<int>::const_iterator cit3 = it + 4;
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EXPECT_TRUE(cit3 == s.cend());
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}
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TEST(span_test, iterator_comparisons)
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{
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int a[] = {1, 2, 3, 4};
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@ -899,15 +871,8 @@ TEST(span_test, from_array_constructor)
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span<int> s = a;
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span<int>::iterator it = s.begin();
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auto it2 = it + 1;
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span<int>::const_iterator cit = s.cbegin();
|
||||
|
||||
EXPECT_TRUE(it == cit);
|
||||
EXPECT_TRUE(cit == it);
|
||||
EXPECT_TRUE(it == it);
|
||||
EXPECT_TRUE(cit == cit);
|
||||
EXPECT_TRUE(cit == s.begin());
|
||||
EXPECT_TRUE(s.begin() == cit);
|
||||
EXPECT_TRUE(s.cbegin() == cit);
|
||||
EXPECT_TRUE(it == s.begin());
|
||||
EXPECT_TRUE(s.begin() == it);
|
||||
|
||||
@ -916,26 +881,16 @@ TEST(span_test, from_array_constructor)
|
||||
EXPECT_TRUE(it != s.end());
|
||||
EXPECT_TRUE(it2 != s.end());
|
||||
EXPECT_TRUE(s.end() != it);
|
||||
EXPECT_TRUE(it2 != cit);
|
||||
EXPECT_TRUE(cit != it2);
|
||||
|
||||
EXPECT_TRUE(it < it2);
|
||||
EXPECT_TRUE(it <= it2);
|
||||
EXPECT_TRUE(it2 <= s.end());
|
||||
EXPECT_TRUE(it < s.end());
|
||||
EXPECT_TRUE(it <= cit);
|
||||
EXPECT_TRUE(cit <= it);
|
||||
EXPECT_TRUE(cit < it2);
|
||||
EXPECT_TRUE(cit <= it2);
|
||||
EXPECT_TRUE(cit < s.end());
|
||||
EXPECT_TRUE(cit <= s.end());
|
||||
|
||||
EXPECT_TRUE(it2 > it);
|
||||
EXPECT_TRUE(it2 >= it);
|
||||
EXPECT_TRUE(s.end() > it2);
|
||||
EXPECT_TRUE(s.end() >= it2);
|
||||
EXPECT_TRUE(it2 > cit);
|
||||
EXPECT_TRUE(it2 >= cit);
|
||||
}
|
||||
}
|
||||
|
||||
@ -1019,63 +974,6 @@ TEST(span_test, from_array_constructor)
|
||||
}
|
||||
}
|
||||
|
||||
TEST(span_test, cbegin_cend)
|
||||
{
|
||||
std::set_terminate([] {
|
||||
std::cerr << "Expected Death. cbegin_cend";
|
||||
std::abort();
|
||||
});
|
||||
{
|
||||
int a[] = {1, 2, 3, 4};
|
||||
span<int> s = a;
|
||||
|
||||
span<int>::const_iterator cit = s.cbegin();
|
||||
span<int>::const_iterator cit2 = std::cbegin(s);
|
||||
EXPECT_TRUE(cit == cit2);
|
||||
|
||||
cit = s.cend();
|
||||
cit2 = std::cend(s);
|
||||
EXPECT_TRUE(cit == cit2);
|
||||
}
|
||||
|
||||
{
|
||||
int a[] = {1, 2, 3, 4};
|
||||
span<int> s = a;
|
||||
|
||||
auto it = s.cbegin();
|
||||
auto first = it;
|
||||
EXPECT_TRUE(it == first);
|
||||
EXPECT_TRUE(*it == 1);
|
||||
|
||||
auto beyond = s.cend();
|
||||
EXPECT_TRUE(it != beyond);
|
||||
EXPECT_DEATH(*beyond, deathstring);
|
||||
|
||||
EXPECT_TRUE(beyond - first == 4);
|
||||
EXPECT_TRUE(first - first == 0);
|
||||
EXPECT_TRUE(beyond - beyond == 0);
|
||||
|
||||
++it;
|
||||
EXPECT_TRUE(it - first == 1);
|
||||
EXPECT_TRUE(*it == 2);
|
||||
EXPECT_TRUE(beyond - it == 3);
|
||||
|
||||
int last = 0;
|
||||
it = first;
|
||||
EXPECT_TRUE(it == first);
|
||||
while (it != s.cend())
|
||||
{
|
||||
EXPECT_TRUE(*it == last + 1);
|
||||
|
||||
last = *it;
|
||||
++it;
|
||||
}
|
||||
|
||||
EXPECT_TRUE(it == beyond);
|
||||
EXPECT_TRUE(it - beyond == 0);
|
||||
}
|
||||
}
|
||||
|
||||
TEST(span_test, rbegin_rend)
|
||||
{
|
||||
std::set_terminate([] {
|
||||
@ -1125,55 +1023,6 @@ TEST(span_test, from_array_constructor)
|
||||
}
|
||||
}
|
||||
|
||||
TEST(span_test, crbegin_crend)
|
||||
{
|
||||
std::set_terminate([] {
|
||||
std::cerr << "Expected Death. crbegin_crend";
|
||||
std::abort();
|
||||
});
|
||||
{
|
||||
int a[] = {1, 2, 3, 4};
|
||||
span<int> s = a;
|
||||
|
||||
auto it = s.crbegin();
|
||||
auto first = it;
|
||||
EXPECT_TRUE(it == first);
|
||||
EXPECT_TRUE(*it == 4);
|
||||
|
||||
auto beyond = s.crend();
|
||||
EXPECT_TRUE(it != beyond);
|
||||
#if (__cplusplus > 201402L)
|
||||
EXPECT_DEATH([[maybe_unused]] auto _ = *beyond, deathstring);
|
||||
#else
|
||||
EXPECT_DEATH(auto _ = *beyond, deathstring);
|
||||
#endif
|
||||
|
||||
EXPECT_TRUE(beyond - first == 4);
|
||||
EXPECT_TRUE(first - first == 0);
|
||||
EXPECT_TRUE(beyond - beyond == 0);
|
||||
|
||||
std::cout << *first << std::endl;
|
||||
++it;
|
||||
EXPECT_TRUE(it - s.crbegin() == 1);
|
||||
EXPECT_TRUE(*it == 3);
|
||||
EXPECT_TRUE(beyond - it == 3);
|
||||
|
||||
it = first;
|
||||
EXPECT_TRUE(it == first);
|
||||
int last = 5;
|
||||
while (it != s.crend())
|
||||
{
|
||||
EXPECT_TRUE(*it == last - 1);
|
||||
last = *it;
|
||||
|
||||
++it;
|
||||
}
|
||||
|
||||
EXPECT_TRUE(it == beyond);
|
||||
EXPECT_TRUE(it - beyond == 0);
|
||||
}
|
||||
}
|
||||
|
||||
TEST(span_test, as_bytes)
|
||||
{
|
||||
std::set_terminate([] {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user