[Boost-commit] svn:boost r53903 - trunk/boost/fusion/functional/adapter

Subject: [Boost-commit] svn:boost r53903 - trunk/boost/fusion/functional/adapter
From: tschwinger_at_[hidden]
Date: 2009-06-14 07:09:03

Author: t_schwinger
Date: 2009-06-14 07:09:03 EDT (Sun, 14 Jun 2009)
New Revision: 53903
URL: http://svn.boost.org/trac/boost/changeset/53903

Log:
introduces unfused adapter

Added:
   trunk/boost/fusion/functional/adapter/unfused.hpp   (contents, props changed)

Added: trunk/boost/fusion/functional/adapter/unfused.hpp
==============================================================================
--- (empty file)
+++ trunk/boost/fusion/functional/adapter/unfused.hpp	2009-06-14 07:09:03 EDT (Sun, 14 Jun 2009)
@@ -0,0 +1,151 @@
+/*=============================================================================
+    Copyright (c) 2006-2007 Tobias Schwinger
+  
+    Use modification and distribution are subject to 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).
+==============================================================================*/
+
+#if !defined(BOOST_FUSION_FUNCTIONAL_ADAPTER_UNFUSED_HPP_INCLUDED)
+#if !defined(BOOST_PP_IS_ITERATING)
+
+#include <boost/preprocessor/cat.hpp>
+#include <boost/preprocessor/iteration/iterate.hpp>
+#include <boost/preprocessor/repetition/enum_params.hpp>
+#include <boost/preprocessor/repetition/enum_binary_params.hpp>
+#include <boost/preprocessor/facilities/intercept.hpp>
+
+#include <boost/utility/result_of.hpp>
+
+#include <boost/fusion/container/vector/vector.hpp>
+
+#include <boost/fusion/functional/adapter/limits.hpp>
+#include <boost/fusion/functional/adapter/detail/access.hpp>
+
+namespace boost { namespace fusion
+{
+    template <class Function, bool AllowNullary = true>
+    class unfused;
+
+    //----- ---- --- -- - -  -   -
+
+    template <class Function> 
+    class unfused<Function,true>
+      : public unfused<Function,false>
+    {
+        typedef typename detail::qf_c<Function>::type function_c;
+        typedef typename detail::qf<Function>::type function;
+        typedef typename detail::call_param<Function>::type func_const_fwd_t;
+      public:
+
+        using unfused<Function,false>::operator();
+
+        inline explicit unfused(func_const_fwd_t f = function())
+            : unfused<Function,false>(f)
+        { }
+
+        typedef typename boost::result_of<
+            function_c(fusion::vector0 &) >::type call_const_0_result;
+
+        inline call_const_0_result operator()() const
+        {
+            fusion::vector0 arg;
+            return this->fnc_transformed(arg);
+        }
+
+        typedef typename boost::result_of< 
+            function(fusion::vector0 &) >::type call_0_result;
+
+        inline call_0_result operator()() 
+        {
+            fusion::vector0 arg;
+            return this->fnc_transformed(arg);
+        }
+    };
+
+    template <class Function> class unfused<Function,false>
+    {
+      protected:
+        Function fnc_transformed;
+        typedef typename detail::qf_c<Function>::type function_c;
+        typedef typename detail::qf<Function>::type function;
+        typedef typename detail::call_param<Function>::type func_const_fwd_t;
+      public:
+
+        inline explicit unfused(func_const_fwd_t f = function())
+            : fnc_transformed(f)
+        { }
+
+        template <typename Sig>
+        struct result;
+
+        #define  BOOST_PP_FILENAME_1 \
+            <boost/fusion/functional/adapter/unfused.hpp>
+        #define  BOOST_PP_ITERATION_LIMITS \
+            (1,BOOST_FUSION_UNFUSED_MAX_ARITY)
+        #include BOOST_PP_ITERATE()
+    };
+}}
+
+namespace boost 
+{
+    template<class F>
+    struct result_of< boost::fusion::unfused<F> const () >
+    {
+        typedef typename boost::fusion::unfused<F>::call_const_0_result type;
+    };
+    template<class F>
+    struct result_of< boost::fusion::unfused<F>() >
+    {
+        typedef typename boost::fusion::unfused<F>::call_0_result type;
+    };
+}
+
+#define BOOST_FUSION_FUNCTIONAL_ADAPTER_UNFUSED_HPP_INCLUDED
+#else // defined(BOOST_PP_IS_ITERATING)
+////////////////////////////////////////////////////////////////////////////////
+//
+//  Preprocessor vertical repetition code
+//
+////////////////////////////////////////////////////////////////////////////////
+#define N BOOST_PP_ITERATION()
+
+        template <class Self, BOOST_PP_ENUM_PARAMS(N,typename T)>
+        struct result< Self const (BOOST_PP_ENUM_PARAMS(N,T)) >
+            : boost::result_of< function_c(
+                BOOST_PP_CAT(fusion::vector,N)< BOOST_PP_ENUM_BINARY_PARAMS(N,
+                    typename detail::mref<T,>::type BOOST_PP_INTERCEPT) > & )>
+        { };
+
+        template <class Self, BOOST_PP_ENUM_PARAMS(N,typename T)>
+        struct result< Self(BOOST_PP_ENUM_PARAMS(N,T)) >
+            : boost::result_of< function(
+                BOOST_PP_CAT(fusion::vector,N)< BOOST_PP_ENUM_BINARY_PARAMS(N,
+                    typename detail::mref<T,>::type BOOST_PP_INTERCEPT) > & )>
+        { };
+
+        template <BOOST_PP_ENUM_PARAMS(N,typename T)>
+        inline typename boost::result_of<function_c(BOOST_PP_CAT(fusion::vector,N)
+            <BOOST_PP_ENUM_BINARY_PARAMS(N,T,& BOOST_PP_INTERCEPT)> & )>::type
+        operator()(BOOST_PP_ENUM_BINARY_PARAMS(N,T,& a)) const
+        {
+            BOOST_PP_CAT(fusion::vector,N)<
+                  BOOST_PP_ENUM_BINARY_PARAMS(N,T,& BOOST_PP_INTERCEPT) >
+                arg(BOOST_PP_ENUM_PARAMS(N,a));
+            return this->fnc_transformed(arg);
+        }
+
+        template <BOOST_PP_ENUM_PARAMS(N,typename T)>
+        inline typename boost::result_of<function(BOOST_PP_CAT(fusion::vector,N)
+            <BOOST_PP_ENUM_BINARY_PARAMS(N,T,& BOOST_PP_INTERCEPT)> & )>::type
+        operator()(BOOST_PP_ENUM_BINARY_PARAMS(N,T,& a)) 
+        {
+            BOOST_PP_CAT(fusion::vector,N)<
+                  BOOST_PP_ENUM_BINARY_PARAMS(N,T,& BOOST_PP_INTERCEPT) >
+                arg(BOOST_PP_ENUM_PARAMS(N,a));
+            return this->fnc_transformed(arg);
+        }
+#undef N
+#endif // defined(BOOST_PP_IS_ITERATING)
+#endif
+