Traits.ih

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00001 // $Id: Traits.ih 1742 2010-11-04 14:51:56Z g0dil $
00002 //
00003 // Copyright (C) 2008
00004 // Fraunhofer (FOKUS)
00005 // Competence Center NETwork research (NET), St. Augustin, GERMANY
00006 //     Stefan Bund <g0dil@berlios.de>
00007 //
00008 // This program is free software; you can redistribute it and/or modify
00009 // it under the terms of the GNU General Public License as published by
00010 // the Free Software Foundation; either version 2 of the License, or
00011 // (at your option) any later version.
00012 //
00013 // This program is distributed in the hope that it will be useful,
00014 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00015 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00016 // GNU General Public License for more details.
00017 //
00018 // You should have received a copy of the GNU General Public License
00019 // along with this program; if not, write to the
00020 // Free Software Foundation, Inc.,
00021 // 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00022 
00026 #ifndef IH_SENF_Scheduler_Console_Traits_
00027 #define IH_SENF_Scheduler_Console_Traits_ 1
00028 
00029 // Custom includes
00030 #include <string>
00031 #include <limits>
00032 #include <boost/preprocessor/seq/for_each.hpp>
00033 #include <boost/preprocessor/stringize.hpp>
00034 #include <boost/preprocessor/facilities/empty.hpp>
00035 #include <boost/bimap.hpp>
00036 #include <boost/assign/list_inserter.hpp>
00037 #include <boost/algorithm/string/case_conv.hpp>
00038 #include <boost/mpl/if.hpp>
00039 
00040 //-/////////////////////////////////////////////////////////////////////////////////////////////////
00041 
00042 namespace senf {
00043 namespace console {
00044 
00045     template <class _> struct ArgumentTraits;
00046     template <class _> struct ReturnValueTraits;
00047 
00048 namespace detail {
00049 
00050     template <class CharT>
00051     struct MatchingShortType
00052         : public boost::mpl::if_c<std::numeric_limits<CharT>::is_signed,short,unsigned short>
00053     {};
00054 
00055     template <class CharT>
00056     struct CharArgumentTraits
00057         : public ArgumentTraits<typename MatchingShortType<CharT>::type>
00058     {
00059         typedef ArgumentTraits<typename MatchingShortType<CharT>::type> base;
00060         typedef CharT type;
00061         static void parse(ParseCommandInfo::TokensRange const & tokens, CharT & out);
00062         static std::string description();
00063     };
00064 
00065     template <class CharT>
00066     struct CharReturnValueTraits
00067         : public ReturnValueTraits<typename MatchingShortType<CharT>::type>
00068     {
00069         typedef CharT type;
00070     };
00071 
00072 #ifndef DOXYGEN
00073     struct StringILess
00074     {
00075         bool operator()(std::string const & left, std::string const & right) const
00076             { return boost::algorithm::to_lower_copy(left)
00077                   < boost::algorithm::to_lower_copy(right); }
00078     };
00079 
00080     typedef boost::bimap<boost::bimaps::set_of<std::string, StringILess>, long> EnumTable;
00081 
00082     long parseEnum(EnumTable const & table, ParseCommandInfo::TokensRange const & tokens);
00083     std::string formatEnum(EnumTable const & table, long value);
00084 
00085 #   define SENF_CONSOLE_REGISTER_ENUM_ELT(r,d,e)                        \
00086         BOOST_PP_IF( SENF_CONSOLE_REGISTER_ENUM_HASKEY(e),              \
00087                      SENF_CONSOLE_REGISTER_ENUM_WITHKEY,                \
00088                      SENF_CONSOLE_REGISTER_ENUM_NOKEY )(d, e)
00089 
00090 #   define SENF_CONSOLE_REGISTER_ENUM_GOBBLE__key(k,e)
00091 #   define SENF_CONSOLE_REGISTER_ENUM_GET_KEY__key(k,e) k
00092 #   define SENF_CONSOLE_REGISTER_ENUM_GET_ENUM__key(k,e) e
00093 #   define SENF_CONSOLE_REGISTER_ENUM_HASKEY(e)                         \
00094         BOOST_PP_IS_EMPTY( SENF_CAT_RECURS1(SENF_CONSOLE_REGISTER_ENUM_GOBBLE__, e) )
00095 
00096 #   define SENF_CONSOLE_REGISTER_ENUM_KEY_GETENUM(e)                    \
00097         SENF_CAT_RECURS2(SENF_CONSOLE_REGISTER_ENUM_GET_ENUM__, e)
00098 #   define SENF_CONSOLE_REGISTER_ENUM_KEY_GETKEY(e)                     \
00099         SENF_CAT_RECURS3(SENF_CONSOLE_REGISTER_ENUM_GET_KEY__, e)
00100 
00101 #   define SENF_CONSOLE_REGISTER_ENUM_NOKEY(prefix, e)                  \
00102         ( BOOST_PP_STRINGIZE(e), static_cast<long>(prefix e) )
00103 
00104 #   define SENF_CONSOLE_REGISTER_ENUM_WITHKEY(prefix, e)                \
00105         ( SENF_CONSOLE_REGISTER_ENUM_KEY_GETKEY(e),                     \
00106           static_cast<long>(prefix SENF_CONSOLE_REGISTER_ENUM_KEY_GETENUM(e)) )
00107 
00108 
00109 #   define SENF_CONSOLE_REGISTER_ENUM_(Prefix, Type, Values)                                      \
00110         inline senf::console::detail::EnumTable & senf_console_enum_table(Prefix Type)            \
00111         {                                                                                         \
00112             static senf::console::detail::EnumTable table;                                        \
00113             if (table.empty())                                                                    \
00114                 boost::assign::insert(table)                                                      \
00115                     BOOST_PP_SEQ_FOR_EACH( SENF_CONSOLE_REGISTER_ENUM_ELT, Prefix, Values );      \
00116             return table;                                                                         \
00117         }                                                                                         \
00118         inline void senf_console_parse_argument(                                                  \
00119             senf::console::ParseCommandInfo::TokensRange const & tokens, Prefix Type & out)       \
00120         {                                                                                         \
00121             out = static_cast<Prefix Type>(                                                       \
00122                 senf::console::detail::parseEnum(                                                 \
00123                     senf_console_enum_table( Prefix Type() ), tokens) );                          \
00124         }                                                                                         \
00125         inline void senf_console_format_value(Prefix Type value, std::ostream & os)               \
00126         {                                                                                         \
00127             os << senf::console::detail::formatEnum(                                              \
00128                 senf_console_enum_table( Prefix Type() ), static_cast<long>(value) );             \
00129         }
00130 
00131 #endif
00132 
00133 }}}
00134 
00135 //-/////////////////////////////////////////////////////////////////////////////////////////////////
00136 #endif
00137 
00138 
00139 // Local Variables:
00140 // mode: c++
00141 // fill-column: 100
00142 // comment-column: 40
00143 // c-file-style: "senf"
00144 // indent-tabs-mode: nil
00145 // ispell-local-dictionary: "american"
00146 // compile-command: "scons -u test"
00147 // End:
SENF Extensible Network Framework

Traits.ih
