llvm-project/libcxx/test/std/strings/basic.string/range_concept_conformance.compile.pass.cpp
Arthur O'Dwyer 67151d029b [libc++] [ranges] Implement P2415R2 owning_view.
"What is a view?"
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p2415r2.html
https://github.com/cplusplus/draft/pull/5010/files

This was a late-breaking (Oct 2021) change to C++20.
The only thing missing from this patch is that we're supposed
to bump the feature-test macro from
    #define __cpp_lib_ranges 202106L
to
    #define __cpp_lib_ranges 202110L
but we can't do that because we don't implement all of 202106 Ranges yet.

Differential Revision: https://reviews.llvm.org/D116894
2022-01-13 12:29:41 -05:00

39 lines
1.6 KiB
C++

//===----------------------------------------------------------------------===//
//
// 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
// UNSUPPORTED: libcpp-no-concepts
// UNSUPPORTED: libcpp-has-no-incomplete-ranges
// string
#include <string>
#include <concepts>
#include <ranges>
static_assert(std::same_as<std::ranges::iterator_t<std::string>, std::string::iterator>);
static_assert(std::ranges::common_range<std::string>);
static_assert(std::ranges::random_access_range<std::string>);
static_assert(std::ranges::contiguous_range<std::string>);
static_assert(!std::ranges::view<std::string>);
static_assert(std::ranges::sized_range<std::string>);
static_assert(!std::ranges::borrowed_range<std::string>);
static_assert(std::ranges::viewable_range<std::string>);
static_assert(std::same_as<std::ranges::iterator_t<std::string const>, std::string::const_iterator>);
static_assert(std::ranges::common_range<std::string const>);
static_assert(std::ranges::random_access_range<std::string const>);
static_assert(std::ranges::contiguous_range<std::string const>);
static_assert(!std::ranges::view<std::string const>);
static_assert(std::ranges::sized_range<std::string const>);
static_assert(!std::ranges::borrowed_range<std::string const>);
static_assert(!std::ranges::viewable_range<std::string const>);