From ab612d0f18ff545b4ebcb2bf2bb400996e751181 Mon Sep 17 00:00:00 2001
From: Kevin Smith <git@kismith.co.uk>
Date: Thu, 29 May 2014 16:56:31 +0100
Subject: Add boost::optional serialization

Needed by one of Richard's pending patches

Change-Id: I64f6ab56065a51019a2d0c826e1bde6856970994

diff --git a/3rdParty/Boost/src/boost/serialization/optional.hpp b/3rdParty/Boost/src/boost/serialization/optional.hpp
new file mode 100644
index 0000000..929fa07
--- /dev/null
+++ b/3rdParty/Boost/src/boost/serialization/optional.hpp
@@ -0,0 +1,127 @@
+/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
+
+// (C) Copyright 2002-4 Pavel Vozenilek . 
+// Use, modification and distribution is subject to 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)
+
+// Provides non-intrusive serialization for boost::optional.
+
+#ifndef BOOST_SERIALIZATION_OPTIONAL_HPP_
+#define BOOST_SERIALIZATION_OPTIONAL_HPP_
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+#include <boost/config.hpp>
+
+#include <boost/archive/detail/basic_iarchive.hpp>
+
+#include <boost/optional.hpp>
+#include <boost/serialization/item_version_type.hpp>
+#include <boost/serialization/split_free.hpp>
+#include <boost/serialization/level.hpp>
+#include <boost/serialization/nvp.hpp>
+#include <boost/serialization/version.hpp>
+#include <boost/serialization/detail/stack_constructor.hpp>
+
+// function specializations must be defined in the appropriate
+// namespace - boost::serialization
+namespace boost { 
+namespace serialization {
+
+template<class Archive, class T>
+void save(
+    Archive & ar, 
+    const boost::optional< T > & t, 
+    const unsigned int /*version*/
+){
+    const bool tflag = t.is_initialized();
+    ar << boost::serialization::make_nvp("initialized", tflag);
+    if (tflag){
+        const boost::serialization::item_version_type item_version(version< T >::value);
+        #if 0
+        const boost::archive::library_version_type library_version(
+            ar.get_library_version()
+        };
+        if(boost::archive::library_version_type(3) < library_version){
+            ar << BOOST_SERIALIZATION_NVP(item_version);
+        }
+        #else
+            ar << BOOST_SERIALIZATION_NVP(item_version);
+        #endif
+        ar << boost::serialization::make_nvp("value", *t);
+    }
+}
+
+template<class Archive, class T>
+void load(
+    Archive & ar, 
+    boost::optional< T > & t, 
+    const unsigned int /*version*/
+){
+    bool tflag;
+    ar >> boost::serialization::make_nvp("initialized", tflag);
+    if (tflag){
+        boost::serialization::item_version_type item_version(0);
+        boost::archive::library_version_type library_version(
+            ar.get_library_version()
+        );
+        if(boost::archive::library_version_type(3) < library_version){
+            // item_version is handled as an attribute so it doesnt need an NVP
+           ar >> BOOST_SERIALIZATION_NVP(item_version);
+        }
+        detail::stack_construct<Archive, T> aux(ar, item_version);
+        ar >> boost::serialization::make_nvp("value", aux.reference());
+        t.reset(aux.reference());
+    }
+    else {
+        t.reset();
+    }
+}
+
+template<class Archive, class T>
+void serialize(
+    Archive & ar, 
+    boost::optional< T > & t, 
+    const unsigned int version
+){
+    boost::serialization::split_free(ar, t, version);
+}
+
+// the following would be slightly more efficient.  But it
+// would mean that archives created with programs that support
+// TPS wouldn't be readable by programs that don't support TPS.
+// Hence we decline to support this otherwise convenient optimization.
+//#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+#if 0
+
+template <class T>
+struct implementation_level<optional< T > >
+{
+    typedef mpl::integral_c_tag tag;
+    typedef mpl::int_<boost::serialization::object_serializable> type;
+    BOOST_STATIC_CONSTANT(
+        int , 
+        value = boost::serialization::implementation_level::type::value
+    );
+};
+
+template<class T>
+struct tracking_level<optional< T > >
+{
+    typedef mpl::integral_c_tag tag;
+    typedef mpl::int_<boost::serialization::track_never> type;
+    BOOST_STATIC_CONSTANT(
+        int , 
+        value = boost::serialization::tracking_level::type::value
+    );
+};
+
+#endif
+
+} // serialization
+} // namespace boost
+
+#endif // BOOST_SERIALIZATION_OPTIONAL_HPP_
diff --git a/3rdParty/Boost/update.sh b/3rdParty/Boost/update.sh
index 7996dfb..2fe348c 100755
--- a/3rdParty/Boost/update.sh
+++ b/3rdParty/Boost/update.sh
@@ -50,6 +50,7 @@ fi
 	serialization/set.hpp \
 	serialization/version.hpp \
 	serialization/split_member.hpp \
+	serialization/optional.hpp \
 	signals.hpp \
 	thread.hpp \
 	unordered_map.hpp \
-- 
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