--- /dev/null
+// $Id$
+//
+// Copyright (C) 2007
+// Fraunhofer Institute for Open Communication Systems (FOKUS)
+// Competence Center NETwork research (NET), St. Augustin, GERMANY
+// Stefan Bund <g0dil@berlios.de>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the
+// Free Software Foundation, Inc.,
+// 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+/** \file
+ \brief Parameters internal header */
+
+#ifndef IH_SENF_Utils_Logger_Parameters_
+#define IH_SENF_Utils_Logger_Parameters_ 1
+
+// Custom includes
+#include <iostream>
+#include <boost/preprocessor/seq/for_each_i.hpp>
+#include <boost/preprocessor/facilities/apply.hpp>
+#include <boost/preprocessor/punctuation/comma_if.hpp>
+#include <boost/mpl/vector.hpp>
+#include <boost/mpl/fold.hpp>
+#include <boost/mpl/if.hpp>
+#include <boost/utility.hpp>
+#include <boost/type_traits/is_convertible.hpp>
+#include "../mpl.hh"
+#include "Config.hh"
+#include "Target.hh"
+
+///////////////////////////////ih.p////////////////////////////////////////
+
+namespace senf {
+namespace log {
+
+ class DefaultArea;
+ class Debug;
+ class NONE;
+
+namespace detail {
+
+ class StreamBase;
+ class AreaBase;
+ class LevelBase;
+ class AliasBase;
+
+ /// Internal: Parameter extractor
+ template <class Base, class Param, unsigned N>
+ struct Parameters_ {};
+
+#ifndef DOXYGEN
+
+ senf::mpl::rv<1> Parameters_select_(StreamBase *);
+ template <class Base, class Param>
+ struct Parameters_<Base,Param,1> : public Base
+ { typedef Param stream; };
+
+ senf::mpl::rv<2> Parameters_select_(AreaBase *);
+ template <class Base, class Param>
+ struct Parameters_<Base,Param,2> : public Base
+ { typedef Param area; typedef Param area_base; };
+
+ senf::mpl::rv<3> Parameters_select_(LevelBase *);
+ template <class Base, class Param>
+ struct Parameters_<Base,Param,3> : public Base
+ { typedef Param level; };
+
+ senf::mpl::rv<4> Parameters_select_(void *);
+ template <class Base>
+ struct Parameters_<Base,void,4> : public Base
+ {};
+
+ senf::mpl::rv<5> Parameters_select_(AliasBase *);
+ template <class Base, class Param>
+ struct Parameters_<Base,Param,5>
+ : public Param::template apply<Base>::type
+ {};
+
+ // This trick makes any class with a SENFLogArea typedef member usable as area. A typedef of
+ // this name is created by SENF_LOG_CLASS_AREA()
+ template <class T>
+ senf::mpl::rv<6> Parameters_select_(
+ T *,
+ typename boost::disable_if< boost::is_convertible<T*,StreamBase*> >::type * = 0,
+ typename boost::disable_if< boost::is_convertible<T*,AreaBase*> >::type * = 0,
+ typename boost::disable_if< boost::is_convertible<T*,LevelBase*> >::type * = 0,
+ typename boost::disable_if< boost::is_convertible<T*,AliasBase*> >::type * = 0);
+ template <class Base, class Param>
+ struct Parameters_<Base,Param,6> : public Base
+ { typedef typename Param::SENFLogArea area; typedef Param area_base; };
+
+#endif
+
+ /// Internal: Log message parameter collection
+ template <class Base>
+ struct Parameters : public Base
+ {
+ typedef typename boost::mpl::if_c< Base::level::value == NONE::value,
+ typename Base::stream::defaultLevel,
+ typename Base::level >::type level;
+
+ static bool const compileEnabled = senf::log::Enabled<
+ typename Base::stream,
+ typename Base::area_base,
+ level>::value;
+
+ static bool enabled() {
+ return compileEnabled
+ && ( senf::log::detail::TargetRegistry::instance().fallbackRouting() ||
+ Base::area::instance().limit(Base::stream::instance()) <= level::value );
+ }
+ };
+
+ /// Internal: Empty base class
+ struct empty {};
+
+ /// Internal: Merge log message parameter list
+ struct Parameters_Merge
+ {
+ /// Internal: Embedded mpl template meta-function
+ template <class Base, class Param>
+ struct apply {
+ typedef Parameters_<
+ Base,
+ Param,
+ SENF_MPL_RV(Parameters_select_(static_cast<Param*>(0)))> type;
+ };
+ };
+
+}}}
+
+typedef senf::log::Debug SENFLogDefaultStream;
+typedef senf::log::DefaultArea SENFLogDefaultArea;
+typedef senf::log::NONE SENFLogDefaultLevel;
+
+#define SENF_LOG_MERGE_ARG(r, data, i, elem) BOOST_PP_COMMA_IF(i) elem
+
+#define SENF_LOG_MERGE_PARAMETERS_I(base, args) \
+ boost::mpl::fold< \
+ boost::mpl::vector< BOOST_PP_SEQ_FOR_EACH_I(SENF_LOG_MERGE_ARG, _, args) >, \
+ base, \
+ senf::log::detail::Parameters_Merge >::type
+
+#define SENF_LOG_MERGE_PARAMETERS(args) \
+ senf::log::detail::Parameters< SENF_LOG_MERGE_PARAMETERS_I( \
+ senf::log::detail::empty, \
+ (SENFLogDefaultStream)(SENFLogDefaultArea)(SENFLogDefaultLevel)args) >
+
+#define SENF_LOG_MERGE_PARAMETERS_TPL(args) \
+ senf::log::detail::Parameters< typename SENF_LOG_MERGE_PARAMETERS_I( \
+ senf::log::detail::empty, \
+ (SENFLogDefaultStream)(SENFLogDefaultArea)(SENFLogDefaultLevel)args) >
+
+///////////////////////////////ih.e////////////////////////////////////////
+#endif
+
+\f
+// Local Variables:
+// mode: c++
+// fill-column: 100
+// comment-column: 40
+// c-file-style: "senf"
+// indent-tabs-mode: nil
+// ispell-local-dictionary: "american"
+// compile-command: "scons -u test"
+// End:
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