//===----------------------------------------------------------------------===// // // 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, c++20 // // template // chunk_by_view(Range&&, Pred) -> chunk_by_view, Pred>; #include #include #include #include "test_iterators.h" struct View : std::ranges::view_base { View() = default; forward_iterator begin() const; sentinel_wrapper> end() const; }; static_assert(std::ranges::view); // A range that is not a view struct Range { Range() = default; forward_iterator begin() const; sentinel_wrapper> end() const; }; static_assert(std::ranges::range); static_assert(!std::ranges::view); struct Pred { constexpr bool operator()(int x, int y) const { return x <= y; } }; constexpr bool test() { { View v; Pred pred; std::ranges::chunk_by_view view(v, pred); static_assert(std::is_same_v>); } { Range r; Pred pred; std::ranges::chunk_by_view view(r, pred); static_assert(std::is_same_v, Pred>>); } { Pred pred; std::ranges::chunk_by_view view(Range{}, pred); static_assert(std::is_same_v, Pred>>); } return true; } int main(int, char**) { test(); static_assert(test()); return 0; }