1 // -*- C++ -*- 2 //===----------------------------------------------------------------------===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef _LIBCPP___ITERATOR_ERASE_IF_CONTAINER_H 11 #define _LIBCPP___ITERATOR_ERASE_IF_CONTAINER_H 12 13 #include <__config> 14 15 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 16 # pragma GCC system_header 17 #endif 18 19 _LIBCPP_PUSH_MACROS 20 #include <__undef_macros> 21 22 _LIBCPP_BEGIN_NAMESPACE_STD 23 24 template <class _Container, class _Predicate> 25 _LIBCPP_HIDE_FROM_ABI typename _Container::size_type __libcpp_erase_if_container(_Container& __c, _Predicate& __pred) { 26 typename _Container::size_type __old_size = __c.size(); 27 28 const typename _Container::iterator __last = __c.end(); 29 for (typename _Container::iterator __iter = __c.begin(); __iter != __last;) { 30 if (__pred(*__iter)) 31 __iter = __c.erase(__iter); 32 else 33 ++__iter; 34 } 35 36 return __old_size - __c.size(); 37 } 38 39 _LIBCPP_END_NAMESPACE_STD 40 41 _LIBCPP_POP_MACROS 42 43 #endif // _LIBCPP___ITERATOR_ERASE_IF_CONTAINER_H 44