1 files changed, 42 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/spirit/home/phoenix/core/nothing.hpp b/3rdParty/Boost/src/boost/spirit/home/phoenix/core/nothing.hpp
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index 0000000..029fbbf
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+++ b/3rdParty/Boost/src/boost/spirit/home/phoenix/core/nothing.hpp
@@ -0,0 +1,42 @@
+/*=============================================================================
+    Copyright (c) 2001-2007 Joel de Guzman
+
+    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)
+==============================================================================*/
+#ifndef PHOENIX_CORE_NOTHING_HPP
+#define PHOENIX_CORE_NOTHING_HPP
+
+#include <boost/spirit/home/phoenix/core/actor.hpp>
+#include <boost/mpl/bool.hpp>
+
+namespace boost { namespace phoenix
+{
+///////////////////////////////////////////////////////////////////////////////
+//
+//  null_actor
+//
+//      A actor that does nothing (a "bum", if you will :-).
+//
+///////////////////////////////////////////////////////////////////////////////
+    struct null_actor
+    {
+        typedef mpl::false_ no_nullary;
+
+        template <typename Env>
+        struct result
+        {
+            typedef void type;
+        };
+
+        template <typename Env>
+        void
+        eval(Env const&) const
+        {
+        }
+    };
+
+    actor<null_actor> const nothing = null_actor();
+}}
+
+#endif