b177a90ce7
The ranges concepts were already available in libc++13, so we shouldn't guard them with `_LIBCPP_HAS_NO_INCOMPLETE_RANGES`. Fixes https://github.com/llvm/llvm-project/issues/54765 Reviewed By: #libc, ldionne Spies: ldionne, libcxx-commits Differential Revision: https://reviews.llvm.org/D124011
94 lines
2.3 KiB
C++
94 lines
2.3 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
|
|
|
|
// template<class T>
|
|
// concept input_iterator;
|
|
|
|
// std::ranges::forward_range
|
|
|
|
#include <ranges>
|
|
|
|
#include <iterator>
|
|
|
|
struct range {
|
|
int* begin();
|
|
int* end();
|
|
};
|
|
|
|
template<std::ranges::range R>
|
|
requires std::input_iterator<std::ranges::iterator_t<R>>
|
|
constexpr bool check_input_range_subsumption() {
|
|
return false;
|
|
}
|
|
|
|
template<std::ranges::input_range>
|
|
requires true
|
|
constexpr bool check_input_range_subsumption() {
|
|
return true;
|
|
}
|
|
|
|
static_assert(check_input_range_subsumption<range>());
|
|
|
|
template<std::ranges::input_range R>
|
|
requires std::forward_iterator<std::ranges::iterator_t<R>>
|
|
constexpr bool check_forward_range_subsumption() {
|
|
return false;
|
|
}
|
|
|
|
template<std::ranges::forward_range>
|
|
requires true
|
|
constexpr bool check_forward_range_subsumption() {
|
|
return true;
|
|
}
|
|
|
|
static_assert(check_forward_range_subsumption<range>());
|
|
|
|
template<std::ranges::forward_range R>
|
|
requires std::bidirectional_iterator<std::ranges::iterator_t<R>>
|
|
constexpr bool check_bidirectional_range_subsumption() {
|
|
return false;
|
|
}
|
|
|
|
template<std::ranges::bidirectional_range>
|
|
requires true
|
|
constexpr bool check_bidirectional_range_subsumption() {
|
|
return true;
|
|
}
|
|
|
|
static_assert(check_bidirectional_range_subsumption<range>());
|
|
|
|
template<std::ranges::bidirectional_range R>
|
|
requires std::random_access_iterator<std::ranges::iterator_t<R>>
|
|
constexpr bool check_random_access_range_subsumption() {
|
|
return false;
|
|
}
|
|
|
|
template<std::ranges::random_access_range>
|
|
requires true
|
|
constexpr bool check_random_access_range_subsumption() {
|
|
return true;
|
|
}
|
|
|
|
static_assert(check_random_access_range_subsumption<range>());
|
|
|
|
template<std::ranges::random_access_range R>
|
|
requires std::random_access_iterator<std::ranges::iterator_t<R>>
|
|
constexpr bool check_contiguous_range_subsumption() {
|
|
return false;
|
|
}
|
|
|
|
template<std::ranges::contiguous_range>
|
|
requires true
|
|
constexpr bool check_contiguous_range_subsumption() {
|
|
return true;
|
|
}
|
|
|
|
static_assert(check_contiguous_range_subsumption<range>());
|