Added boost header

test/external/boost/serialization/variant.hpp

@@ -0,0 +1,163 @@
+#ifndef BOOST_SERIALIZATION_VARIANT_HPP
+#define BOOST_SERIALIZATION_VARIANT_HPP
+
+// MS compatible compilers support #pragma once
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+#if defined(_MSC_VER) && (_MSC_VER <= 1020)
+#  pragma warning (disable : 4786) // too long name, harmless warning
+#endif
+
+/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
+// variant.hpp - non-intrusive serialization of variant types
+//
+// copyright (c) 2005   
+// troy d. straszheim <troy@resophonic.com>
+// http://www.resophonic.com
+//
+// 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)
+//
+// See http://www.boost.org for updates, documentation, and revision history.
+//
+// thanks to Robert Ramey, Peter Dimov, and Richard Crossley.
+//
+
+#include <boost/mpl/front.hpp>
+#include <boost/mpl/pop_front.hpp>
+#include <boost/mpl/eval_if.hpp>
+#include <boost/mpl/identity.hpp>
+#include <boost/mpl/size.hpp>
+#include <boost/mpl/empty.hpp>
+
+#include <boost/serialization/throw_exception.hpp>
+
+#include <boost/variant.hpp>
+
+#include <boost/archive/archive_exception.hpp>
+
+#include <boost/serialization/split_free.hpp>
+#include <boost/serialization/serialization.hpp>
+#include <boost/serialization/nvp.hpp>
+
+namespace boost {
+namespace serialization {
+
+template<class Archive>
+struct variant_save_visitor : 
+    boost::static_visitor<> 
+{
+    variant_save_visitor(Archive& ar) :
+        m_ar(ar)
+    {}
+    template<class T>
+    void operator()(T const & value) const
+    {
+        m_ar << BOOST_SERIALIZATION_NVP(value);
+    }
+private:
+    Archive & m_ar;
+};
+
+template<class Archive, BOOST_VARIANT_ENUM_PARAMS(/* typename */ class T)>
+void save(
+    Archive & ar,
+    boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> const & v,
+    unsigned int /*version*/
+){
+    int which = v.which();
+    ar << BOOST_SERIALIZATION_NVP(which);
+    typedef BOOST_DEDUCED_TYPENAME  boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)>::types types;
+    variant_save_visitor<Archive> visitor(ar);
+    v.apply_visitor(visitor);
+}
+
+template<class S>
+struct variant_impl {
+
+    struct load_null {
+        template<class Archive, class V>
+        static void invoke(
+            Archive & /*ar*/,
+            int /*which*/,
+            V & /*v*/,
+            const unsigned int /*version*/
+        ){}
+    };
+
+    struct load_impl {
+        template<class Archive, class V>
+        static void invoke(
+            Archive & ar,
+            int which,
+            V & v,
+            const unsigned int version
+        ){
+            if(which == 0){
+                // note: A non-intrusive implementation (such as this one)
+                // necessary has to copy the value.  This wouldn't be necessary
+                // with an implementation that de-serialized to the address of the
+                // aligned storage included in the variant.
+                typedef BOOST_DEDUCED_TYPENAME mpl::front<S>::type head_type;
+                head_type value;
+                ar >> BOOST_SERIALIZATION_NVP(value);
+                v = value;
+                ar.reset_object_address(& boost::get<head_type>(v), & value);
+                return;
+            }
+            typedef BOOST_DEDUCED_TYPENAME mpl::pop_front<S>::type type;
+            variant_impl<type>::load(ar, which - 1, v, version);
+        }
+    };
+
+    template<class Archive, class V>
+    static void load(
+        Archive & ar,
+        int which,
+        V & v,
+        const unsigned int version
+    ){
+        typedef BOOST_DEDUCED_TYPENAME mpl::eval_if<mpl::empty<S>,
+            mpl::identity<load_null>,
+            mpl::identity<load_impl>
+        >::type typex;
+        typex::invoke(ar, which, v, version);
+    }
+
+};
+
+template<class Archive, BOOST_VARIANT_ENUM_PARAMS(/* typename */ class T)>
+void load(
+    Archive & ar, 
+    boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)>& v,
+    const unsigned int version
+){
+    int which;
+    typedef BOOST_DEDUCED_TYPENAME boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)>::types types;
+    ar >> BOOST_SERIALIZATION_NVP(which);
+    if(which >=  mpl::size<types>::value)
+        // this might happen if a type was removed from the list of variant types
+        boost::serialization::throw_exception(
+            boost::archive::archive_exception(
+                boost::archive::archive_exception::unsupported_version
+            )
+        );
+    variant_impl<types>::load(ar, which, v, version);
+}
+
+template<class Archive,BOOST_VARIANT_ENUM_PARAMS(/* typename */ class T)>
+inline void serialize(
+    Archive & ar,
+    boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> & v,
+    const unsigned int file_version
+){
+    split_free(ar,v,file_version);
+}
+
+} // namespace serialization
+} // namespace boost
+
+#endif //BOOST_SERIALIZATION_VARIANT_HPP