Implement rest of P2259R1, Repairing Input Range Adaptors - #2059
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Stephan T. Lavavej (StephanTLavavej) merged 18 commits intoAug 17, 2021
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Michael Schellenberger Costa (miscco)
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Co-authored-by: Casey Carter <cartec69@gmail.com>
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Casey Carter (CaseyCarter)
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Aug 3, 2021
| class _Sentinel; | ||
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| template <class _Traits> // TRANSITION, LWG-3289 | ||
| template <class _Base> |
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Note to other reviewers: we already implement the equivalent of the split_view changes from P2259R1.
| using reference = iter_rvalue_reference_t<_Iter>; | ||
| #else // ^^^ __cpp_lib_concepts / !__cpp_lib_concepts vvv | ||
| using reference = | ||
| conditional_t<is_reference_v<_Iter_ref_t<_Iter>>, remove_reference_t<_Iter_ref_t<_Iter>>&&, _Iter_ref_t<_Iter>>; |
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Note to reviewers: #1939 already implemented the counted_iterator changes from P2259R1.
... which has been resolved as NAD after adoption of P2259. Drive-by: Correctly order the `iterator_traits` nested types in three places where they are misordered. (There's some value in using the Standard's consistent ordering.)
... by adding constructors and giving up on the code generation benefits of being ABI-aggregate. Adding a defaulted `<=>` to the partial specializations of the base class `_Ioterator_category_base` allows us to go back to defaulting `==` and `<=>`.
Casey Carter (CaseyCarter)
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... that I made redundant in the last commit.
Casey Carter (CaseyCarter)
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Stephan T. Lavavej (StephanTLavavej)
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... even in stateless classes for which `<=>` is a constant function.
Casey Carter (CaseyCarter)
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I'm mirroring this to an MSVC-internal PR. Please notify me if any further changes are pushed. |
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Thanks for implementing these repairs for broken Standardese! 🏚️ 🛠️ 🏡 |
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I did not add new test yet, will audit them
Fixes #1684.