senf/Utils/Logger/Config.ih

   1 // $Id$
   2 //
   3 // Copyright (C) 2007
   4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
   5 //
   6 // The contents of this file are subject to the Fraunhofer FOKUS Public License
   7 // Version 1.0 (the "License"); you may not use this file except in compliance
   8 // with the License. You may obtain a copy of the License at
   9 // http://senf.berlios.de/license.html
  10 //
  11 // The Fraunhofer FOKUS Public License Version 1.0 is based on,
  12 // but modifies the Mozilla Public License Version 1.1.
  13 // See the full license text for the amendments.
  14 //
  15 // Software distributed under the License is distributed on an "AS IS" basis,
  16 // WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  17 // for the specific language governing rights and limitations under the License.
  18 //
  19 // The Original Code is Fraunhofer FOKUS code.
  20 //
  21 // The Initial Developer of the Original Code is Fraunhofer-Gesellschaft e.V.
  22 // (registered association), Hansastraße 27 c, 80686 Munich, Germany.
  23 // All Rights Reserved.
  24 //
  25 // Contributor(s):
  26 //   Stefan Bund <g0dil@berlios.de>
  27
  28 /** \file
  29     \brief Config internal header */
  30
  31 #ifndef IH_SENF_Utils_Logger_Config_
  32 #define IH_SENF_Utils_Logger_Config_ 1
  33
  34 // Custom includes
  35 #include <boost/preprocessor/expand.hpp>
  36 #include <boost/preprocessor/seq/for_each.hpp>
  37 #include <boost/preprocessor/seq/to_tuple.hpp>
  38 #include <boost/preprocessor/seq/fold_right.hpp>
  39 #include <boost/preprocessor/seq/pop_back.hpp>
  40 #include <boost/preprocessor/if.hpp>
  41 #include <boost/preprocessor/facilities/is_empty.hpp>
  42 #include <senf/Utils/preprocessor.hh>
  43
  44 //-/////////////////////////////////////////////////////////////////////////////////////////////////
  45
  46 namespace senf {
  47 namespace log {
  48 namespace detail {
  49
  50     struct na {};
  51
  52     /// Internal: Compile time configuration for given \a Stream and \a Area
  53     template <class Stream, class Area, class QueryStream=Stream, bool Query=true>
  54     struct Config
  55     {
  56         typedef typename Config<na, Area, Stream, Query>::compileLimit compileLimit;
  57     };
  58
  59 #   ifndef DOXYGEN
  60
  61     template <class Area, class QueryStream, bool Query>
  62     struct Config<na, Area, QueryStream, Query>
  63     {
  64         typedef typename Config<QueryStream, na, QueryStream, Query>::compileLimit compileLimit;
  65     };
  66
  67     template <class Stream, class QueryStream, bool Query>
  68     struct Config<Stream, na, QueryStream, Query>
  69     {
  70         typedef typename Config<na, na, QueryStream, Query>::compileLimit compileLimit;
  71     };
  72
  73     template <class QueryStream, bool Query>
  74     struct Config<na, na, QueryStream, Query>
  75     {
  76         typedef typename QueryStream::compileLimit compileLimit;
  77     };
  78
  79 #   endif
  80
  81 }}}
  82
  83 #define SENF_LOG_CHECK_NA_
  84
  85 #define SENF_LOG_CAT(a,b) SENF_LOG_CAT_I(a,b)
  86 #define SENF_LOG_CAT_I(a,b) a ## b
  87
  88 #define SENF_LOG_IS_NA(elt) BOOST_PP_IS_EMPTY( SENF_LOG_CAT(SENF_LOG_CHECK_NA, elt) )
  89
  90 #define SENF_LOG_SEQ_TO_NAME_(s,state,elem)                                                       \
  91     BOOST_PP_IF( SENF_LOG_IS_NA(elem), senf::log::detail::na, state::elem )
  92
  93 #define SENF_LOG_SEQ_TO_NAME(seq)                                                                 \
  94     BOOST_PP_SEQ_FOLD_LEFT(SENF_LOG_SEQ_TO_NAME_, , seq)
  95
  96 #define SENF_LOG_PREDECL_(s, state, elem)                                                         \
  97     namespace elem { state }
  98
  99 #define SENF_LOG_PREDECL_long(seq)                                                                \
 100     BOOST_PP_SEQ_FOLD_RIGHT( SENF_LOG_PREDECL_,                                                   \
 101                              class SENF_PP_SEQ_BACK(seq);,                                        \
 102                              BOOST_PP_SEQ_POP_BACK(seq) )
 103
 104 #define SENF_LOG_PREDECL_short(seq)                                                               \
 105    BOOST_PP_IF( SENF_LOG_IS_NA( SENF_PP_SEQ_BACK(seq) ), ; , class SENF_PP_SEQ_BACK(seq); )
 106
 107 #define SENF_LOG_PREDECL(seq)                                                                     \
 108     BOOST_PP_CAT(SENF_LOG_PREDECL_,                                                               \
 109                  BOOST_PP_IF(BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(seq)),long,short))(seq)
 110
 111 #define SENF_LOG_NIL(x)
 112
 113 #define SENF_LOG_CONF_DEFINE(stream, area, level)                                                 \
 114     SENF_LOG_PREDECL(stream)                                                                      \
 115     SENF_LOG_PREDECL(area)                                                                        \
 116     namespace senf { namespace log { namespace detail {                                           \
 117         template <class QueryStream>                                                              \
 118         struct Config< SENF_LOG_SEQ_TO_NAME(stream),                                              \
 119                        SENF_LOG_SEQ_TO_NAME(area),                                                \
 120                        QueryStream,                                                               \
 121                        true >                                                                     \
 122         { typedef senf::log::level compileLimit; };                                               \
 123     }}}
 124
 125 #ifdef SENF_LOG_CONF
 126
 127 #   define SLC_elt(r, data, elt) \
 128         SENF_LOG_CONF_DEFINE elt
 129
 130     BOOST_PP_SEQ_FOR_EACH(SLC_elt, none, SENF_LOG_CONF)
 131
 132 #   undef SLC_elt
 133
 134 #endif
 135
 136
 137
 138
 139 //-/////////////////////////////////////////////////////////////////////////////////////////////////
 140 #endif
 141
 142 \f
 143 // Local Variables:
 144 // mode: c++
 145 // fill-column: 100
 146 // comment-column: 40
 147 // c-file-style: "senf"
 148 // indent-tabs-mode: nil
 149 // ispell-local-dictionary: "american"
 150 // compile-command: "scons -u test"
 151 // End: