ceph/src/boost/libs/metaparse/include/boost/metaparse/v1/impl/size.hpp

   1 #ifndef BOOST_METAPARSE_V1_IMPL_SIZE_HPP
   2 #define BOOST_METAPARSE_V1_IMPL_SIZE_HPP
   3
   4 // Copyright Abel Sinkovics (abel@sinkovics.hu)  2013.
   5 // Distributed under the Boost Software License, Version 1.0.
   6 //    (See accompanying file LICENSE_1_0.txt or copy at
   7 //          http://www.boost.org/LICENSE_1_0.txt)
   8
   9 #include <boost/metaparse/config.hpp>
  10 #include <boost/metaparse/v1/fwd/string.hpp>
  11
  12 #include <boost/mpl/int.hpp>
  13
  14 #include <boost/preprocessor/arithmetic/sub.hpp>
  15 #include <boost/preprocessor/punctuation/comma_if.hpp>
  16 #include <boost/preprocessor/repetition/enum.hpp>
  17 #include <boost/preprocessor/repetition/enum_params.hpp>
  18 #include <boost/preprocessor/repetition/repeat.hpp>
  19 #include <boost/preprocessor/tuple/eat.hpp>
  20
  21 namespace boost
  22 {
  23   namespace metaparse
  24   {
  25     namespace v1
  26     {
  27       namespace impl
  28       {
  29         template <class S>
  30         struct size;
  31
  32 #ifdef BOOST_METAPARSE_VARIADIC_STRING
  33         template <char... Cs>
  34         struct size<string<Cs...>> : boost::mpl::int_<sizeof...(Cs)> {};
  35 #else
  36         #ifdef BOOST_METAPARSE_STRING_CASE
  37         #  error BOOST_METAPARSE_STRING_CASE
  38         #endif
  39         #define BOOST_METAPARSE_STRING_CASE(z, n, unused) \
  40           template <BOOST_PP_ENUM_PARAMS(n, int C)> \
  41           struct \
  42             size< \
  43               string< \
  44                 BOOST_PP_ENUM_PARAMS(n, C) BOOST_PP_COMMA_IF(n) \
  45                 BOOST_PP_ENUM( \
  46                   BOOST_PP_SUB(BOOST_METAPARSE_LIMIT_STRING_SIZE, n), \
  47                   BOOST_NO_CHAR BOOST_PP_TUPLE_EAT(3), \
  48                   ~ \
  49                 ) \
  50               > \
  51             > : \
  52             boost::mpl::int_<n> \
  53           {};
  54
  55         BOOST_PP_REPEAT(
  56           BOOST_METAPARSE_LIMIT_STRING_SIZE,
  57           BOOST_METAPARSE_STRING_CASE,
  58           ~
  59         )
  60
  61         #undef BOOST_METAPARSE_STRING_CASE
  62 #endif
  63       }
  64     }
  65   }
  66 }
  67
  68 #endif
  69