1 files changed, 49 insertions, 0 deletions
diff --git a/src/third_party/boost-1.69.0/boost/intrusive/parent_from_member.hpp b/src/third_party/boost-1.69.0/boost/intrusive/parent_from_member.hpp
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index 00000000000..a9a9293c7ca
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+++ b/src/third_party/boost-1.69.0/boost/intrusive/parent_from_member.hpp
@@ -0,0 +1,49 @@
+/////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga  2010-2013
+//
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE_1_0.txt or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/libs/intrusive for documentation.
+//
+/////////////////////////////////////////////////////////////////////////////
+#ifndef BOOST_INTRUSIVE_PARENT_FROM_MEMBER_HPP
+#define BOOST_INTRUSIVE_PARENT_FROM_MEMBER_HPP
+
+#include <boost/intrusive/detail/config_begin.hpp>
+#include <boost/intrusive/detail/workaround.hpp>
+#include <boost/intrusive/intrusive_fwd.hpp>
+
+#include <boost/intrusive/detail/parent_from_member.hpp>
+
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+#  pragma once
+#endif
+
+namespace boost {
+namespace intrusive {
+
+//! Given a pointer to a member and its corresponding pointer to data member,
+//! this function returns the pointer of the parent containing that member.
+//! Note: this function does not work with pointer to members that rely on
+//! virtual inheritance.
+template<class Parent, class Member>
+BOOST_INTRUSIVE_FORCEINLINE Parent *get_parent_from_member(Member *member, const Member Parent::* ptr_to_member)
+{  return ::boost::intrusive::detail::parent_from_member(member, ptr_to_member);  }
+
+//! Given a const pointer to a member and its corresponding const pointer to data member,
+//! this function returns the const pointer of the parent containing that member.
+//! Note: this function does not work with pointer to members that rely on
+//! virtual inheritance.
+template<class Parent, class Member>
+BOOST_INTRUSIVE_FORCEINLINE const Parent *get_parent_from_member(const Member *member, const Member Parent::* ptr_to_member)
+{  return ::boost::intrusive::detail::parent_from_member(member, ptr_to_member);  }
+
+}  //namespace intrusive {
+}  //namespace boost {
+
+#include <boost/intrusive/detail/config_end.hpp>
+
+#endif   //#ifndef BOOST_INTRUSIVE_PARENT_FROM_MEMBER_HPP