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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// template<class R, class Pred>
// drop_while_view(R&&, Pred) -> drop_while_view<views::all_t<R>, Pred>;
#include <cassert>
#include <ranges>
#include <utility>
struct Container {
int* begin() const;
int* end() const;
};
struct View : std::ranges::view_base {
int* begin() const;
int* end() const;
};
struct Pred {
bool operator()(int i) const;
};
bool pred(int);
static_assert(std::is_same_v<decltype(std::ranges::drop_while_view(Container{}, Pred{})),
std::ranges::drop_while_view<std::ranges::owning_view<Container>, Pred>>);
static_assert(std::is_same_v<decltype(std::ranges::drop_while_view(View{}, pred)), //
std::ranges::drop_while_view<View, bool (*)(int)>>);
static_assert(std::is_same_v<decltype(std::ranges::drop_while_view(View{}, Pred{})), //
std::ranges::drop_while_view<View, Pred>>);
void testRef() {
Container c{};
Pred p{};
static_assert(std::is_same_v<decltype(std::ranges::drop_while_view(c, p)),
std::ranges::drop_while_view<std::ranges::ref_view<Container>, Pred>>);
}
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