51 lines
1.5 KiB
C++
51 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<class R, class Pred>
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// take_while_view(R&&, Pred) -> take_while_view<views::all_t<R>, Pred>;
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#include <cassert>
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#include <ranges>
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#include <utility>
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#include "types.h"
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struct Container {
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int* begin() const;
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int* end() const;
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};
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struct View : std::ranges::view_base {
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int* begin() const;
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int* end() const;
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};
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struct Pred {
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bool operator()(int i) const;
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};
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bool pred(int);
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static_assert(std::is_same_v<decltype(std::ranges::take_while_view(Container{}, Pred{})),
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std::ranges::take_while_view<std::ranges::owning_view<Container>, Pred>>);
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static_assert(std::is_same_v<decltype(std::ranges::take_while_view(View{}, pred)), //
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std::ranges::take_while_view<View, bool (*)(int)>>);
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static_assert(std::is_same_v<decltype(std::ranges::take_while_view(View{}, Pred{})), //
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std::ranges::take_while_view<View, Pred>>);
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void testRef() {
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Container c{};
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Pred p{};
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static_assert(std::is_same_v<decltype(std::ranges::take_while_view(c, p)),
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std::ranges::take_while_view<std::ranges::ref_view<Container>, Pred>>);
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}
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