Added boost header

test/external/boost/mpl/switch.hpp

@@ -0,0 +1,49 @@
+
+#ifndef BOOST_MPL_SWITCH_HPP_INCLUDED
+#define BOOST_MPL_SWITCH_HPP_INCLUDED
+
+// Copyright Aleksey Gurtovoy 2003-2004
+//
+// 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/mpl for documentation.
+
+// $Id: switch.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
+// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
+// $Revision: 49267 $
+
+#include <boost/mpl/find_if.hpp>
+#include <boost/mpl/deref.hpp>
+#include <boost/mpl/lambda.hpp>
+#include <boost/mpl/apply.hpp>
+#include <boost/mpl/pair.hpp>
+#include <boost/mpl/aux_/na_spec.hpp>
+#include <boost/mpl/aux_/lambda_support.hpp>
+
+namespace boost { namespace mpl {
+
+template< 
+      typename BOOST_MPL_AUX_NA_PARAM(Body)
+    , typename BOOST_MPL_AUX_NA_PARAM(T)
+    >
+struct switch_
+{
+    typedef typename find_if<
+          Body
+        , apply1< lambda< first<_1> >, T >
+        >::type iter_;
+        
+    typedef typename deref<iter_>::type pair_;
+    typedef typename lambda< typename second<pair_>::type >::type f_;
+    typedef typename apply1<f_,T>::type type;
+
+    BOOST_MPL_AUX_LAMBDA_SUPPORT(2,switch_,(Body,T))
+};
+
+BOOST_MPL_AUX_NA_SPEC(2, switch_)
+
+}}
+
+#endif // BOOST_MPL_SWITCH_HPP_INCLUDED