Added thirdparty: boost library

thirdparty/include/boost/flyweight/detail/default_value_policy.hpp

@@ -0,0 +1,84 @@
+/* Copyright 2006-2019 Joaquin M Lopez Munoz.
+ * 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/flyweight for library home page.
+ */
+
+#ifndef BOOST_FLYWEIGHT_DETAIL_DEFAULT_VALUE_POLICY_HPP
+#define BOOST_FLYWEIGHT_DETAIL_DEFAULT_VALUE_POLICY_HPP
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
+#include <boost/detail/workaround.hpp>
+#include <boost/flyweight/detail/perfect_fwd.hpp>
+#include <boost/flyweight/detail/value_tag.hpp>
+
+/* Default value policy: the key is the same as the value.
+ */
+
+namespace boost{
+
+namespace flyweights{
+
+namespace detail{
+
+template<typename Value>
+struct default_value_policy:value_marker
+{
+  typedef Value key_type;
+  typedef Value value_type;
+
+  struct rep_type
+  {
+  /* template ctors */
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)&&\
+    !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)&&\
+    BOOST_WORKAROUND(BOOST_GCC,<=40603)
+/* GCC bug: the default ctor generated by the variadic template ctor below
+ * fails to value-initialize x.
+ */
+
+    rep_type():x(){}
+#endif
+
+#define BOOST_FLYWEIGHT_PERFECT_FWD_CTR_BODY(args) \
+  :x(BOOST_FLYWEIGHT_FORWARD(args)){}
+
+  BOOST_FLYWEIGHT_PERFECT_FWD(
+    explicit rep_type,
+    BOOST_FLYWEIGHT_PERFECT_FWD_CTR_BODY)
+
+#undef BOOST_FLYWEIGHT_PERFECT_FWD_CTR_BODY
+
+    rep_type(const rep_type& r):x(r.x){}
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    rep_type(rep_type&& r):x(std::move(r.x)){}
+#endif
+
+    operator const value_type&()const{return x;}
+
+    value_type x;
+  };
+
+  static void construct_value(const rep_type&){}
+  static void copy_value(const rep_type&){}
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+  static void move_value(const rep_type&){}
+#endif
+};
+
+} /* namespace flyweights::detail */
+
+} /* namespace flyweights */
+
+} /* namespace boost */
+
+#endif