senf/Utils/Logger/Config.ih

   1 // $Id$
   2 //
   3 // Copyright (C) 2007
   4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
   5 // Competence Center NETwork research (NET), St. Augustin, GERMANY
   6 //     Stefan Bund <g0dil@berlios.de>
   7 //
   8 // This program is free software; you can redistribute it and/or modify
   9 // it under the terms of the GNU General Public License as published by
  10 // the Free Software Foundation; either version 2 of the License, or
  11 // (at your option) any later version.
  12 //
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the
  20 // Free Software Foundation, Inc.,
  21 // 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22
  23 /** \file
  24     \brief Config internal header */
  25
  26 #ifndef IH_SENF_Utils_Logger_Config_
  27 #define IH_SENF_Utils_Logger_Config_ 1
  28
  29 // Custom includes
  30 #include <boost/preprocessor/expand.hpp>
  31 #include <boost/preprocessor/seq/for_each.hpp>
  32 #include <boost/preprocessor/seq/to_tuple.hpp>
  33 #include <boost/preprocessor/seq/fold_right.hpp>
  34 #include <boost/preprocessor/seq/pop_back.hpp>
  35 #include <boost/preprocessor/if.hpp>
  36 #include <boost/preprocessor/facilities/is_empty.hpp>
  37 #include <senf/Utils/preprocessor.hh>
  38
  39 //-/////////////////////////////////////////////////////////////////////////////////////////////////
  40
  41 namespace senf {
  42 namespace log {
  43 namespace detail {
  44
  45     struct na {};
  46
  47     /// Internal: Compile time configuration for given \a Stream and \a Area
  48     template <class Stream, class Area, class QueryStream=Stream, bool Query=true>
  49     struct Config
  50     {
  51         typedef typename Config<na, Area, Stream, Query>::compileLimit compileLimit;
  52     };
  53
  54 #   ifndef DOXYGEN
  55
  56     template <class Area, class QueryStream, bool Query>
  57     struct Config<na, Area, QueryStream, Query>
  58     {
  59         typedef typename Config<QueryStream, na, QueryStream, Query>::compileLimit compileLimit;
  60     };
  61
  62     template <class Stream, class QueryStream, bool Query>
  63     struct Config<Stream, na, QueryStream, Query>
  64     {
  65         typedef typename Config<na, na, QueryStream, Query>::compileLimit compileLimit;
  66     };
  67
  68     template <class QueryStream, bool Query>
  69     struct Config<na, na, QueryStream, Query>
  70     {
  71         typedef typename QueryStream::compileLimit compileLimit;
  72     };
  73
  74 #   endif
  75
  76 }}}
  77
  78 #define SENF_LOG_CHECK_NA_
  79
  80 #define SENF_LOG_CAT(a,b) SENF_LOG_CAT_I(a,b)
  81 #define SENF_LOG_CAT_I(a,b) a ## b
  82
  83 #define SENF_LOG_IS_NA(elt) BOOST_PP_IS_EMPTY( SENF_LOG_CAT(SENF_LOG_CHECK_NA, elt) )
  84
  85 #define SENF_LOG_SEQ_TO_NAME_(s,state,elem)                                                       \
  86     BOOST_PP_IF( SENF_LOG_IS_NA(elem), senf::log::detail::na, state::elem )
  87
  88 #define SENF_LOG_SEQ_TO_NAME(seq)                                                                 \
  89     BOOST_PP_SEQ_FOLD_LEFT(SENF_LOG_SEQ_TO_NAME_, , seq)
  90
  91 #define SENF_LOG_PREDECL_(s, state, elem)                                                         \
  92     namespace elem { state }
  93
  94 #define SENF_LOG_PREDECL_long(seq)                                                                \
  95     BOOST_PP_SEQ_FOLD_RIGHT( SENF_LOG_PREDECL_,                                                   \
  96                              class SENF_PP_SEQ_BACK(seq);,                                        \
  97                              BOOST_PP_SEQ_POP_BACK(seq) )
  98
  99 #define SENF_LOG_PREDECL_short(seq)                                                               \
 100    BOOST_PP_IF( SENF_LOG_IS_NA( SENF_PP_SEQ_BACK(seq) ), ; , class SENF_PP_SEQ_BACK(seq); )
 101
 102 #define SENF_LOG_PREDECL(seq)                                                                     \
 103     BOOST_PP_CAT(SENF_LOG_PREDECL_,                                                               \
 104                  BOOST_PP_IF(BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(seq)),long,short))(seq)
 105
 106 #define SENF_LOG_NIL(x)
 107
 108 #define SENF_LOG_CONF_DEFINE(stream, area, level)                                                 \
 109     SENF_LOG_PREDECL(stream)                                                                      \
 110     SENF_LOG_PREDECL(area)                                                                        \
 111     namespace senf { namespace log { namespace detail {                                           \
 112         template <class QueryStream>                                                              \
 113         struct Config< SENF_LOG_SEQ_TO_NAME(stream),                                              \
 114                        SENF_LOG_SEQ_TO_NAME(area),                                                \
 115                        QueryStream,                                                               \
 116                        true >                                                                     \
 117         { typedef senf::log::level compileLimit; };                                               \
 118     }}}
 119
 120 #ifdef SENF_LOG_CONF
 121
 122 #   define SLC_elt(r, data, elt) \
 123         SENF_LOG_CONF_DEFINE elt
 124
 125     BOOST_PP_SEQ_FOR_EACH(SLC_elt, none, SENF_LOG_CONF)
 126
 127 #   undef SLC_elt
 128
 129 #endif
 130
 131
 132
 133
 134 //-/////////////////////////////////////////////////////////////////////////////////////////////////
 135 #endif
 136
 137 \f
 138 // Local Variables:
 139 // mode: c++
 140 // fill-column: 100
 141 // comment-column: 40
 142 // c-file-style: "senf"
 143 // indent-tabs-mode: nil
 144 // ispell-local-dictionary: "american"
 145 // compile-command: "scons -u test"
 146 // End: