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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
// UNSUPPORTED: libcpp-has-no-incomplete-ranges
// template<class R>
// concept contiguous_range;
#include <ranges>
#include "test_range.h"
#include "test_iterators.h"
namespace ranges = std::ranges;
template <template <class...> class I>
constexpr bool check_range() {
constexpr bool result = ranges::contiguous_range<test_range<I> >;
static_assert(ranges::contiguous_range<test_range<I> const> == result);
static_assert(ranges::contiguous_range<test_non_const_common_range<I> > == result);
static_assert(ranges::contiguous_range<test_non_const_range<I> > == result);
static_assert(ranges::contiguous_range<test_common_range<I> > == result);
static_assert(ranges::contiguous_range<test_common_range<I> const> == result);
static_assert(!ranges::contiguous_range<test_non_const_common_range<I> const>);
static_assert(!ranges::contiguous_range<test_non_const_range<I> const>);
return result;
}
static_assert(!check_range<cpp20_input_iterator>());
static_assert(!check_range<forward_iterator>());
static_assert(!check_range<bidirectional_iterator>());
static_assert(!check_range<random_access_iterator>());
static_assert(check_range<contiguous_iterator>());
struct ContiguousWhenNonConst {
const int *begin() const;
const int *end() const;
int *begin();
int *end();
int *data() const;
};
static_assert( std::ranges::random_access_range<ContiguousWhenNonConst>);
static_assert( std::ranges::contiguous_range<ContiguousWhenNonConst>);
static_assert(!std::ranges::contiguous_range<const ContiguousWhenNonConst>);
struct ContiguousWhenConst {
const int *begin() const;
const int *end() const;
int *begin();
int *end();
const int *data() const;
};
static_assert( std::ranges::random_access_range<ContiguousWhenConst>);
static_assert(!std::ranges::contiguous_range<ContiguousWhenConst>);
static_assert( std::ranges::contiguous_range<const ContiguousWhenConst>);
struct DataFunctionWrongReturnType {
const int *begin() const;
const int *end() const;
const char *data() const;
};
static_assert( std::ranges::random_access_range<DataFunctionWrongReturnType>);
static_assert(!std::ranges::contiguous_range<const DataFunctionWrongReturnType>);
struct WrongObjectness {
const int *begin() const;
const int *end() const;
void *data() const;
};
static_assert(std::ranges::contiguous_range<WrongObjectness>);
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