773ae44124
C++20 revised the definition of what it means to be an iterator. While all _Cpp17InputIterators_ satisfy `std::input_iterator`, the reverse isn't true. D100271 introduces a new test adaptor to accommodate this new definition (`cpp20_input_iterator`). In order to help readers immediately distinguish which input iterator adaptor is _Cpp17InputIterator_, the current `input_iterator` adaptor has been prefixed with `cpp17_`. Differential Revision: https://reviews.llvm.org/D101242
60 lines
1.5 KiB
C++
60 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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#ifndef LIBCXX_TEST_SUPPORT_TEST_RANGE_H
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#define LIBCXX_TEST_SUPPORT_TEST_RANGE_H
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#include <iterator>
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#include <ranges>
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#include "test_iterators.h"
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#ifdef _LIBCPP_HAS_NO_RANGES
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#error "test/suppoort/test_range.h" can only be included in builds supporting ranges
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#endif
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struct sentinel {
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bool operator==(std::input_or_output_iterator auto const&) const;
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};
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// clang-format off
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template <template <class...> class I>
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requires std::input_or_output_iterator<I<int*> >
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struct test_range {
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I<int*> begin();
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I<int const*> begin() const;
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sentinel end();
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sentinel end() const;
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};
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template <template <class...> class I>
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requires std::input_or_output_iterator<I<int*> >
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struct test_non_const_range {
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I<int*> begin();
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sentinel end();
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};
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template <template <class...> class I>
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requires std::input_or_output_iterator<I<int*> >
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struct test_common_range {
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I<int*> begin();
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I<int const*> begin() const;
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I<int*> end();
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I<int const*> end() const;
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};
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template <template <class...> class I>
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requires std::input_or_output_iterator<I<int*> >
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struct test_non_const_common_range {
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I<int*> begin();
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I<int*> end();
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};
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// clang-format on
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#endif // LIBCXX_TEST_SUPPORT_TEST_RANGE_H
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