m initial check in

[SVN r25070]

include/boost/mpl/apply_if.hpp

@@ -0,0 +1,53 @@
+//-----------------------------------------------------------------------------
+// boost/mpl/apply_if.hpp header file
+// See http://www.boost.org for updates, documentation, and revision history.
+//-----------------------------------------------------------------------------
+//
+// Copyright (c) 2004
+// Robert Ramey
+//
+// Permission to use, copy, modify, distribute and sell this software
+// and its documentation for any purpose is hereby granted without fee, 
+// provided that the above copyright notice appears in all copies and 
+// that both the copyright notice and this permission notice appear in 
+// supporting documentation. No representations are made about the 
+// suitability of this software for any purpose. It is provided "as is" 
+// without express or implied warranty.
+
+// apply_if is deprecated.  Use eval_if instead.  This is only included
+// to support older code like spirit 1.6
+
+#ifndef BOOST_MPL_APPLY_IF_HPP_INCLUDED
+#define BOOST_MPL_APPLY_IF_HPP_INCLUDED
+
+#include "boost/mpl/eval_if.hpp"
+
+namespace boost {
+namespace mpl {
+
+template<
+      typename C
+    , typename F1
+    , typename F2
+    >
+struct apply_if
+{
+    typedef BOOST_DEDUCED_TYPENAME eval_if<C,F1,F2>::type type;
+};
+
+// (almost) copy & paste in order to save one more 
+// recursively nested template instantiation to user
+template<
+      bool C
+    , typename F1
+    , typename F2
+    >
+struct apply_if_c
+{
+    typedef BOOST_DEDUCED_TYPENAME eval_if_c<C,F1,F2>::type type;
+};
+
+} // namespace mpl
+} // namespace boost
+
+#endif // BOOST_MPL_APPLY_IF_HPP_INCLUDED