__cxx03/__algorithm/find_first_of.h

0001 // -*- C++ -*-
0002 //===----------------------------------------------------------------------===//
0003 //
0004 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0005 // See https://llvm.org/LICENSE.txt for license information.
0006 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0007 //
0008 //===----------------------------------------------------------------------===//
0009
0010 #ifndef _LIBCPP___CXX03___ALGORITHM_FIND_FIRST_OF_H
0011 #define _LIBCPP___CXX03___ALGORITHM_FIND_FIRST_OF_H
0012
0013 #include <__cxx03/__algorithm/comp.h>
0014 #include <__cxx03/__config>
0015 #include <__cxx03/__iterator/iterator_traits.h>
0016
0017 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
0018 #  pragma GCC system_header
0019 #endif
0020
0021 _LIBCPP_BEGIN_NAMESPACE_STD
0022
0023 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
0024 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _ForwardIterator1 __find_first_of_ce(
0025     _ForwardIterator1 __first1,
0026     _ForwardIterator1 __last1,
0027     _ForwardIterator2 __first2,
0028     _ForwardIterator2 __last2,
0029     _BinaryPredicate&& __pred) {
0030   for (; __first1 != __last1; ++__first1)
0031     for (_ForwardIterator2 __j = __first2; __j != __last2; ++__j)
0032       if (__pred(*__first1, *__j))
0033         return __first1;
0034   return __last1;
0035 }
0036
0037 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
0038 _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator1 find_first_of(
0039     _ForwardIterator1 __first1,
0040     _ForwardIterator1 __last1,
0041     _ForwardIterator2 __first2,
0042     _ForwardIterator2 __last2,
0043     _BinaryPredicate __pred) {
0044   return std::__find_first_of_ce(__first1, __last1, __first2, __last2, __pred);
0045 }
0046
0047 template <class _ForwardIterator1, class _ForwardIterator2>
0048 _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator1 find_first_of(
0049     _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, _ForwardIterator2 __last2) {
0050   return std::__find_first_of_ce(__first1, __last1, __first2, __last2, __equal_to());
0051 }
0052
0053 _LIBCPP_END_NAMESPACE_STD
0054
0055 #endif // _LIBCPP___CXX03___ALGORITHM_FIND_FIRST_OF_H