Utils/Console/Traits.ih

   1 // $Id$
   2 //
   3 // Copyright (C) 2008
   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 Traits internal header */
  25
  26 #ifndef IH_SENF_Scheduler_Console_Traits_
  27 #define IH_SENF_Scheduler_Console_Traits_ 1
  28
  29 // Custom includes
  30 #include <string>
  31 #include <boost/preprocessor/seq/for_each.hpp>
  32 #include <boost/preprocessor/stringize.hpp>
  33 #include <boost/preprocessor/facilities/empty.hpp>
  34 #include <boost/bimap.hpp>
  35 #include <boost/assign/list_inserter.hpp>
  36 #include "../../Utils/singleton.hh"
  37
  38 ///////////////////////////////ih.p////////////////////////////////////////
  39
  40 namespace senf {
  41 namespace console {
  42 namespace detail {
  43
  44 #ifndef DOXYGEN
  45
  46     typedef boost::bimap<std::string, long> EnumTable;
  47
  48     long parseEnum(EnumTable const & table, ParseCommandInfo::TokensRange const & tokens);
  49     std::string formatEnum(EnumTable const & table, long value);
  50
  51     template <class EnumType>
  52     struct EnumTraits : public senf::singleton< EnumTraits<EnumType> >
  53     {
  54         using senf::singleton< EnumTraits<EnumType> >::instance;
  55         EnumTable table;
  56     };
  57
  58 #   define SENF_CONSOLE_REGISTER_ENUM_ELT(r,d,e) \
  59         (BOOST_PP_STRINGIZE(e), static_cast<long>(d e))
  60
  61 #   define SENF_CONSOLE_REGISTER_ENUM_(Prefix, Type, Values)                                      \
  62         void senf_console_init_enum_table(Prefix Type)                                            \
  63         {                                                                                         \
  64             senf::console::detail::EnumTraits<Prefix Type> & traits (                             \
  65                 senf::console::detail::EnumTraits<Prefix Type>::instance() );                     \
  66             if (traits.table.empty())                                                             \
  67                 boost::assign::insert(traits.table)                                               \
  68                     BOOST_PP_SEQ_FOR_EACH( SENF_CONSOLE_REGISTER_ENUM_ELT, Prefix, Values );      \
  69         }                                                                                         \
  70         void senf_console_parse_argument(                                                         \
  71             senf::console::ParseCommandInfo::TokensRange const & tokens, Prefix Type & out)       \
  72         {                                                                                         \
  73             senf_console_init_enum_table( Prefix Type() );                                        \
  74             out = static_cast<Prefix Type>(                                                       \
  75                 senf::console::detail::parseEnum(                                                 \
  76                     senf::console::detail::EnumTraits<Prefix Type>::instance().table, tokens));   \
  77         }                                                                                         \
  78         void senf_console_format_value(Prefix Type value, std::ostream & os)                      \
  79         {                                                                                         \
  80             senf_console_init_enum_table( Prefix Type() );                                        \
  81             os << senf::console::detail::formatEnum(                                              \
  82                 senf::console::detail::EnumTraits<Prefix Type>::instance().table,                 \
  83                 static_cast<long>(value) );                                                       \
  84         }
  85
  86 #endif
  87
  88 }}}
  89
  90 ///////////////////////////////ih.e////////////////////////////////////////
  91 #endif
  92
  93 \f
  94 // Local Variables:
  95 // mode: c++
  96 // fill-column: 100
  97 // comment-column: 40
  98 // c-file-style: "senf"
  99 // indent-tabs-mode: nil
 100 // ispell-local-dictionary: "american"
 101 // compile-command: "scons -u test"
 102 // End: