llvm-project/libcxx/test/std/containers/views/range_concept_conformance.compile.pass.cpp
Christopher Di Bella d8fad66149 [libcxx][ranges] adds concept sized_range and cleans up ranges::size
* adds `sized_range` and conformance tests
* moves `disable_sized_range` into namespace `std::ranges`
* removes explicit type parameter

Implements part of P0896 'The One Ranges Proposal'.

Differential Revision: https://reviews.llvm.org/D102434
2021-05-19 18:16:45 +00:00

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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
// UNSUPPORTED: libcpp-no-concepts
// UNSUPPORTED: gcc-10
// span
#include <span>
#include <concepts>
#include <ranges>
using range = std::span<int>;
namespace stdr = std::ranges;
static_assert(std::same_as<stdr::iterator_t<range>, range::iterator>);
static_assert(stdr::common_range<range>);
static_assert(stdr::random_access_range<range>);
static_assert(!stdr::view<range>);
static_assert(stdr::sized_range<range>);
static_assert(std::same_as<stdr::iterator_t<range const>, range::iterator>);
static_assert(stdr::common_range<range const>);
static_assert(stdr::random_access_range<range const>);
static_assert(!stdr::view<range const>);
static_assert(stdr::sized_range<range const>);