senf/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 <limits>
  32 #include <boost/preprocessor/seq/for_each.hpp>
  33 #include <boost/preprocessor/stringize.hpp>
  34 #include <boost/preprocessor/facilities/empty.hpp>
  35 #include <boost/bimap.hpp>
  36 #include <boost/assign/list_inserter.hpp>
  37 #include <boost/algorithm/string/case_conv.hpp>
  38 #include <boost/mpl/if.hpp>
  39
  40 //-/////////////////////////////////////////////////////////////////////////////////////////////////
  41
  42 namespace senf {
  43 namespace console {
  44
  45     template <class _> struct ArgumentTraits;
  46     template <class _> struct ReturnValueTraits;
  47
  48 namespace detail {
  49
  50     template <class CharT>
  51     struct MatchingShortType
  52         : public boost::mpl::if_c<std::numeric_limits<CharT>::is_signed,short,unsigned short>
  53     {};
  54
  55     template <class CharT>
  56     struct CharArgumentTraits
  57         : public ArgumentTraits<typename MatchingShortType<CharT>::type>
  58     {
  59         typedef ArgumentTraits<typename MatchingShortType<CharT>::type> base;
  60         typedef CharT type;
  61         static void parse(ParseCommandInfo::TokensRange const & tokens, CharT & out);
  62         static std::string description();
  63     };
  64
  65     template <class CharT>
  66     struct CharReturnValueTraits
  67         : public ReturnValueTraits<typename MatchingShortType<CharT>::type>
  68     {
  69         typedef CharT type;
  70     };
  71
  72 #ifndef DOXYGEN
  73     struct StringILess
  74     {
  75         bool operator()(std::string const & left, std::string const & right) const
  76             { return boost::algorithm::to_lower_copy(left)
  77                   < boost::algorithm::to_lower_copy(right); }
  78     };
  79
  80     typedef boost::bimap<boost::bimaps::set_of<std::string, StringILess>, long> EnumTable;
  81
  82     long parseEnum(EnumTable const & table, ParseCommandInfo::TokensRange const & tokens);
  83     std::string formatEnum(EnumTable const & table, long value);
  84
  85 #   define SENF_CONSOLE_REGISTER_ENUM_ELT(r,d,e)                        \
  86         BOOST_PP_IF( SENF_CONSOLE_REGISTER_ENUM_HASKEY(e),              \
  87                      SENF_CONSOLE_REGISTER_ENUM_WITHKEY,                \
  88                      SENF_CONSOLE_REGISTER_ENUM_NOKEY )(d, e)
  89
  90 #   define SENF_CONSOLE_REGISTER_ENUM_GOBBLE__key(k,e)
  91 #   define SENF_CONSOLE_REGISTER_ENUM_GET_KEY__key(k,e) k
  92 #   define SENF_CONSOLE_REGISTER_ENUM_GET_ENUM__key(k,e) e
  93 #   define SENF_CONSOLE_REGISTER_ENUM_HASKEY(e)                         \
  94         BOOST_PP_IS_EMPTY( SENF_CAT_RECURS1(SENF_CONSOLE_REGISTER_ENUM_GOBBLE__, e) )
  95
  96 #   define SENF_CONSOLE_REGISTER_ENUM_KEY_GETENUM(e)                    \
  97         SENF_CAT_RECURS2(SENF_CONSOLE_REGISTER_ENUM_GET_ENUM__, e)
  98 #   define SENF_CONSOLE_REGISTER_ENUM_KEY_GETKEY(e)                     \
  99         SENF_CAT_RECURS3(SENF_CONSOLE_REGISTER_ENUM_GET_KEY__, e)
 100
 101 #   define SENF_CONSOLE_REGISTER_ENUM_NOKEY(prefix, e)                  \
 102         ( BOOST_PP_STRINGIZE(e), static_cast<long>(prefix e) )
 103
 104 #   define SENF_CONSOLE_REGISTER_ENUM_WITHKEY(prefix, e)                \
 105         ( SENF_CONSOLE_REGISTER_ENUM_KEY_GETKEY(e),                     \
 106           static_cast<long>(prefix SENF_CONSOLE_REGISTER_ENUM_KEY_GETENUM(e)) )
 107
 108
 109 #   define SENF_CONSOLE_REGISTER_ENUM_(Prefix, Type, Values)                                      \
 110         inline senf::console::detail::EnumTable & senf_console_enum_table(Prefix Type)            \
 111         {                                                                                         \
 112             static senf::console::detail::EnumTable table;                                        \
 113             if (table.empty())                                                                    \
 114                 boost::assign::insert(table)                                                      \
 115                     BOOST_PP_SEQ_FOR_EACH( SENF_CONSOLE_REGISTER_ENUM_ELT, Prefix, Values );      \
 116             return table;                                                                         \
 117         }                                                                                         \
 118         inline void senf_console_parse_argument(                                                  \
 119             senf::console::ParseCommandInfo::TokensRange const & tokens, Prefix Type & out)       \
 120         {                                                                                         \
 121             out = static_cast<Prefix Type>(                                                       \
 122                 senf::console::detail::parseEnum(                                                 \
 123                     senf_console_enum_table( Prefix Type() ), tokens) );                          \
 124         }                                                                                         \
 125         inline void senf_console_format_value(Prefix Type value, std::ostream & os)               \
 126         {                                                                                         \
 127             os << senf::console::detail::formatEnum(                                              \
 128                 senf_console_enum_table( Prefix Type() ), static_cast<long>(value) );             \
 129         }
 130
 131 #endif
 132
 133 }}}
 134
 135 //-/////////////////////////////////////////////////////////////////////////////////////////////////
 136 #endif
 137
 138 \f
 139 // Local Variables:
 140 // mode: c++
 141 // fill-column: 100
 142 // comment-column: 40
 143 // c-file-style: "senf"
 144 // indent-tabs-mode: nil
 145 // ispell-local-dictionary: "american"
 146 // compile-command: "scons -u test"
 147 // End: