e53c461bf3
Note that this class was called just `split_view` in the original One Ranges Proposal and was renamed to `lazy_split_view` by [P2210](https://wg21.link/p2210). Co-authored-by: zoecarver <z.zoelec2@gmail.com> Differential Revision: https://reviews.llvm.org/D107500
74 lines
1.7 KiB
C++
74 lines
1.7 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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// UNSUPPORTED: libcpp-has-no-incomplete-ranges
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// class std::ranges::lazy_split_view;
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#include <ranges>
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#include <cassert>
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#include <concepts>
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#include <string_view>
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#include <type_traits>
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#include "types.h"
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using V = SplitViewForward;
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static_assert(std::is_base_of_v<std::ranges::view_interface<SplitViewForward>, SplitViewForward>);
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constexpr bool test() {
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using namespace std::string_view_literals;
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// empty()
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{
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{
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std::ranges::lazy_split_view v("abc def", " ");
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assert(!v.empty());
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}
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{
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// Note: an empty string literal would still produce a non-empty output because the terminating zero is treated as
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// a separate character; hence the use of `string_view`.
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std::ranges::lazy_split_view v(""sv, "");
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assert(v.empty());
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}
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}
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// operator bool()
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{
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{
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std::ranges::lazy_split_view v("abc", "");
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assert(v);
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}
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{
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// Note: an empty string literal would still produce a non-empty output because the terminating zero is treated as
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// a separate character; hence the use of `string_view`.
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std::ranges::lazy_split_view v(""sv, "");
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assert(!v);
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}
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}
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// front()
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{
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SplitViewForward v("abc", "");
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assert(*(v.front()).begin() == 'a');
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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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