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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
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_RANGES_STARTS_WITH_H
#define _LIBCPP___ALGORITHM_RANGES_STARTS_WITH_H
#include <__algorithm/in_in_result.h>
#include <__algorithm/ranges_mismatch.h>
#include <__config>
#include <__functional/identity.h>
#include <__functional/ranges_operations.h>
#include <__iterator/concepts.h>
#include <__iterator/indirectly_comparable.h>
#include <__ranges/access.h>
#include <__ranges/concepts.h>
#include <__utility/move.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
#if _LIBCPP_STD_VER >= 23
_LIBCPP_BEGIN_NAMESPACE_STD
namespace ranges {
namespace __starts_with {
struct __fn {
template <input_iterator _Iter1,
sentinel_for<_Iter1> _Sent1,
input_iterator _Iter2,
sentinel_for<_Iter2> _Sent2,
class _Pred = ranges::equal_to,
class _Proj1 = identity,
class _Proj2 = identity>
requires indirectly_comparable<_Iter1, _Iter2, _Pred, _Proj1, _Proj2>
[[nodiscard]] _LIBCPP_HIDE_FROM_ABI static constexpr bool operator()(
_Iter1 __first1,
_Sent1 __last1,
_Iter2 __first2,
_Sent2 __last2,
_Pred __pred = {},
_Proj1 __proj1 = {},
_Proj2 __proj2 = {}) {
return __mismatch::__fn::__go(
std::move(__first1),
std::move(__last1),
std::move(__first2),
std::move(__last2),
__pred,
__proj1,
__proj2)
.in2 == __last2;
}
template <input_range _Range1,
input_range _Range2,
class _Pred = ranges::equal_to,
class _Proj1 = identity,
class _Proj2 = identity>
requires indirectly_comparable<iterator_t<_Range1>, iterator_t<_Range2>, _Pred, _Proj1, _Proj2>
[[nodiscard]] _LIBCPP_HIDE_FROM_ABI static constexpr bool
operator()(_Range1&& __range1, _Range2&& __range2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) {
return __mismatch::__fn::__go(
ranges::begin(__range1),
ranges::end(__range1),
ranges::begin(__range2),
ranges::end(__range2),
__pred,
__proj1,
__proj2)
.in2 == ranges::end(__range2);
}
};
} // namespace __starts_with
inline namespace __cpo {
inline constexpr auto starts_with = __starts_with::__fn{};
} // namespace __cpo
} // namespace ranges
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_STD_VER >= 23
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_RANGES_STARTS_WITH_H
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