ceph/src/boost/libs/spirit/include/boost/spirit/home/support/nonterminal/locals.hpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2011 Joel de Guzman
   3     Copyright (c) 2001-2011 Hartmut Kaiser
   4
   5     Distributed under the Boost Software License, Version 1.0. (See accompanying
   6     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7 ==============================================================================*/
   8 #if !defined(BOOST_SPIRIT_LOCALS_APRIL_03_2007_0506PM)
   9 #define BOOST_SPIRIT_LOCALS_APRIL_03_2007_0506PM
  10
  11 #if defined(_MSC_VER)
  12 #pragma once
  13 #endif
  14
  15 #include <boost/preprocessor/repetition/enum_params_with_a_default.hpp>
  16 #include <boost/preprocessor/repetition/enum_params.hpp>
  17 #include <boost/mpl/vector.hpp>
  18 #include <boost/mpl/bool.hpp>
  19
  20 #if !defined(BOOST_SPIRIT_MAX_LOCALS_SIZE)
  21 # define BOOST_SPIRIT_MAX_LOCALS_SIZE 10
  22 #else
  23 # if BOOST_SPIRIT_MAX_LOCALS_SIZE < 3
  24 #   undef BOOST_SPIRIT_MAX_LOCALS_SIZE
  25 #   define BOOST_SPIRIT_MAX_LOCALS_SIZE 10
  26 # endif
  27 #endif
  28
  29 namespace boost { namespace spirit
  30 {
  31     ///////////////////////////////////////////////////////////////////////////
  32     template <
  33         BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT(
  34             BOOST_SPIRIT_MAX_LOCALS_SIZE, typename T, mpl::na)
  35     >
  36     struct locals
  37       : mpl::vector<BOOST_PP_ENUM_PARAMS(BOOST_SPIRIT_MAX_LOCALS_SIZE, T)> {};
  38
  39     ///////////////////////////////////////////////////////////////////////////
  40     namespace detail
  41     {
  42         template <typename T>
  43         struct is_locals
  44           : mpl::false_
  45         {};
  46
  47         template <BOOST_PP_ENUM_PARAMS(BOOST_SPIRIT_MAX_LOCALS_SIZE, typename T)>
  48         struct is_locals<locals<BOOST_PP_ENUM_PARAMS(BOOST_SPIRIT_MAX_LOCALS_SIZE, T)> >
  49           : mpl::true_
  50         {};
  51     }
  52 }}
  53
  54 #endif