a2b3ab8f77
- implement `std::ranges::split_view` (last c++20 view) - Work in process on testing iterator/sentinel, but since we are getting closer to the deadline, I'd like to send the review early Differential Revision: https://reviews.llvm.org/D142063
49 lines
1.5 KiB
C++
49 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// template<forward_range V, forward_range Pattern>
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// requires view<V> && view<Pattern> &&
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// indirectly_comparable<iterator_t<V>, iterator_t<Pattern>, ranges::equal_to>
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// class split_view;
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#include <ranges>
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#include "test_macros.h"
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#include "test_iterators.h"
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template <class It>
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using Range = std::ranges::subrange<It, sentinel_wrapper<It>>;
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template <class View, class Pattern>
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concept HasSplitView = requires { typename std::ranges::split_view<View, Pattern>; };
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static_assert(HasSplitView<Range<int*>, Range<int*>>);
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// !forward_range<V>
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static_assert(!HasSplitView<Range<cpp20_input_iterator<int*>>, Range<int*>>);
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// !forward_range<Pattern>
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static_assert(!HasSplitView<Range<int*>, Range<cpp20_input_iterator<int*>>>);
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struct NotAView {
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int* begin() const;
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int* end() const;
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};
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// !view<V>
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static_assert(!HasSplitView<NotAView, Range<int*>>);
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// !view<Pattern>
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static_assert(!HasSplitView<Range<int*>, NotAView>);
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// indirectly_comparable<iterator_t<V>, iterator_t<Pattern>, ranges::equal_to
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struct Foo {};
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static_assert(!HasSplitView<Range<int*>, Range<Foo*>>);
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