f5832bab6f
I've structured this into a series of commits for even easier reviewing, if that helps. I could easily split this up into separate PRs if desired, but as this is low-risk with simple edits, I thought one PR would be easiest. * Drop unnecessary semicolons after function definitions. * Cleanup comment typos. * Cleanup `static_assert` typos. * Cleanup test code typos. + There should be no functional changes, assuming I've changed all occurrences. * ~~Fix massive test code typos.~~ + This was a real problem, but needed more surgery. I reverted those changes here, and @philnik777 is fixing this properly with #73444. * clang-formatting as requested by the CI.
123 lines
3.5 KiB
C++
123 lines
3.5 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, c++20
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// template <class T>
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// views::repeat(T &&) requires constructible_from<ranges::repeat_view<T>, T>;
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// template <class T, class Bound>
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// views::repeat(T &&, Bound &&) requires constructible_from<ranges::repeat_view<T, Bound>, T, Bound>;
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#include <cassert>
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#include <concepts>
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#include <ranges>
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#include <tuple>
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#include <type_traits>
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#include "MoveOnly.h"
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struct NonCopyable {
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NonCopyable(NonCopyable&) = delete;
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};
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struct NonDefaultCtor {
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NonDefaultCtor(int) {}
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};
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struct Empty {};
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struct LessThan3 {
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constexpr bool operator()(int i) const { return i < 3; }
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};
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struct EqualTo33 {
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constexpr bool operator()(int i) const { return i == 33; }
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};
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struct Add3 {
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constexpr int operator()(int i) const { return i + 3; }
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};
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// Tp is_object
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static_assert(std::is_invocable_v<decltype(std::views::repeat), int>);
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static_assert(!std::is_invocable_v<decltype(std::views::repeat), void>);
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// _Bound is semiregular, integer like or std::unreachable_sentinel_t
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static_assert(!std::is_invocable_v<decltype(std::views::repeat), int, Empty>);
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static_assert(!std::is_invocable_v<decltype(std::views::repeat), int, NonCopyable>);
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static_assert(!std::is_invocable_v<decltype(std::views::repeat), int, NonDefaultCtor>);
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static_assert(std::is_invocable_v<decltype(std::views::repeat), int, std::unreachable_sentinel_t>);
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// Tp is copy_constructible
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static_assert(!std::is_invocable_v<decltype(std::views::repeat), NonCopyable>);
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// Tp is move_constructible
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static_assert(std::is_invocable_v<decltype(std::views::repeat), MoveOnly>);
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constexpr bool test() {
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assert(*std::views::repeat(33).begin() == 33);
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assert(*std::views::repeat(33, 10).begin() == 33);
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static_assert(std::same_as<decltype(std::views::repeat(42)), std::ranges::repeat_view<int>>);
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static_assert(std::same_as<decltype(std::views::repeat(42, 3)), std::ranges::repeat_view<int, int>>);
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static_assert(std::same_as<decltype(std::views::repeat), decltype(std::ranges::views::repeat)>);
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// unbound && drop_view
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{
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auto r = std::views::repeat(33) | std::views::drop(3);
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static_assert(!std::ranges::sized_range<decltype(r)>);
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assert(*r.begin() == 33);
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}
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// bound && drop_view
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{
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auto r = std::views::repeat(33, 8) | std::views::drop(3);
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static_assert(std::ranges::sized_range<decltype(r)>);
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assert(*r.begin() == 33);
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assert(r.size() == 5);
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}
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// unbound && take_view
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{
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auto r = std::views::repeat(33) | std::views::take(3);
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static_assert(std::ranges::sized_range<decltype(r)>);
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assert(*r.begin() == 33);
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assert(r.size() == 3);
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}
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// bound && take_view
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{
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auto r = std::views::repeat(33, 8) | std::views::take(3);
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static_assert(std::ranges::sized_range<decltype(r)>);
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assert(*r.begin() == 33);
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assert(r.size() == 3);
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}
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// bound && transform_view
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{
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auto r = std::views::repeat(33, 8) | std::views::transform(Add3{});
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assert(*r.begin() == 36);
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assert(r.size() == 8);
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}
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// unbound && transform_view
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{
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auto r = std::views::repeat(33) | std::views::transform(Add3{});
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assert(*r.begin() == 36);
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}
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return true;
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}
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int main(int, char**) {
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test();
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static_assert(test());
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return 0;
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}
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