Imported existing code

libraries/include/boost/spirit/home/phoenix/function/function.hpp

@@ -0,0 +1,48 @@
+/*=============================================================================
+    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_FUNCTION_FUNCTION_HPP
+#define PHOENIX_FUNCTION_FUNCTION_HPP
+
+#include <boost/spirit/home/phoenix/core/compose.hpp>
+#include <boost/spirit/home/phoenix/core/detail/function_eval.hpp>
+
+namespace boost { namespace phoenix
+{
+    template <typename F>
+    struct function
+    {
+        function() : f() {}
+        function(F const& f) : f(f) {}
+
+        actor<typename as_composite<detail::function_eval<0>, F>::type>
+        operator()() const
+        {
+            return compose<detail::function_eval<0> >(f);
+        }
+
+        template <typename A0>
+        actor<typename as_composite<detail::function_eval<1>, F, A0>::type>
+        operator()(A0 const& _0) const
+        {
+            return compose<detail::function_eval<1> >(f, _0);
+        }
+
+        template <typename A0, typename A1>
+        actor<typename as_composite<detail::function_eval<2>, F, A0, A1>::type>
+        operator()(A0 const& _0, A1 const& _1) const
+        {
+            return compose<detail::function_eval<2> >(f, _0, _1);
+        }
+
+        //  Bring in the rest of the function call operators
+        #include <boost/spirit/home/phoenix/function/detail/function_call.hpp>
+
+        F f;
+    };
+}}
+
+#endif