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