Add SCons configure checks

[senf.git] / boost_ext / boost / parameter / aux_ / tag.hpp

diff --git a/boost_ext/boost/parameter/aux_/tag.hpp b/boost_ext/boost/parameter/aux_/tag.hpp
new file mode 100644 (file)
index 0000000..475efb9
--- /dev/null
+++ b/boost_ext/boost/parameter/aux_/tag.hpp
@@ -0,0 +1,38 @@
+// Copyright David Abrahams 2005. 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 BOOST_PARAMETER_AUX_TAG_DWA2005610_HPP
+# define BOOST_PARAMETER_AUX_TAG_DWA2005610_HPP
+
+# include <boost/parameter/aux_/unwrap_cv_reference.hpp>
+# include <boost/parameter/aux_/tagged_argument.hpp>
+
+namespace boost { namespace parameter { namespace aux { 
+
+template <class Keyword, class ActualArg
+#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
+        , class = typename is_cv_reference_wrapper<ActualArg>::type
+#endif 
+          >
+struct tag
+{
+    typedef tagged_argument<
+        Keyword
+      , typename unwrap_cv_reference<ActualArg>::type
+    > type;
+};
+
+#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
+template <class Keyword, class ActualArg>
+struct tag<Keyword,ActualArg,mpl::false_>
+{
+    typedef tagged_argument<
+        Keyword
+      , ActualArg
+    > type;
+};
+#endif 
+
+}}} // namespace boost::parameter::aux_
+
+#endif // BOOST_PARAMETER_AUX_TAG_DWA2005610_HPP