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_BEGIN_NAMESPACE_STD
20 
21 template <class _Container, class _Predicate>
22 _LIBCPP_HIDE_FROM_ABI
23 typename _Container::size_type
__libcpp_erase_if_container(_Container & __c,_Predicate & __pred)24 __libcpp_erase_if_container(_Container& __c, _Predicate& __pred) {
25   typename _Container::size_type __old_size = __c.size();
26 
27   const typename _Container::iterator __last = __c.end();
28   for (typename _Container::iterator __iter = __c.begin(); __iter != __last;) {
29     if (__pred(*__iter))
30       __iter = __c.erase(__iter);
31     else
32       ++__iter;
33   }
34 
35   return __old_size - __c.size();
36 }
37 
38 _LIBCPP_END_NAMESPACE_STD
39 
40 #endif // _LIBCPP___ITERATOR_ERASE_IF_CONTAINER_H
41