ceph/src/boost/libs/spirit/include/boost/spirit/home/qi/auxiliary/eoi.hpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2011 Hartmut Kaiser
   3     Copyright (c) 2001-2011 Joel de Guzman
   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_EOI_APRIL_18_2008_0751PM)
   9 #define BOOST_SPIRIT_EOI_APRIL_18_2008_0751PM
  10
  11 #if defined(_MSC_VER)
  12 #pragma once
  13 #endif
  14
  15 #include <boost/mpl/bool.hpp>
  16 #include <boost/spirit/home/qi/domain.hpp>
  17 #include <boost/spirit/home/qi/parser.hpp>
  18 #include <boost/spirit/home/qi/meta_compiler.hpp>
  19 #include <boost/spirit/home/qi/skip_over.hpp>
  20 #include <boost/spirit/home/support/common_terminals.hpp>
  21
  22 namespace boost { namespace spirit
  23 {
  24     ///////////////////////////////////////////////////////////////////////////
  25     // Enablers
  26     ///////////////////////////////////////////////////////////////////////////
  27     template <>
  28     struct use_terminal<qi::domain, tag::eoi>       // enables eoi
  29       : mpl::true_ {};
  30 }}
  31
  32 namespace boost { namespace spirit { namespace qi
  33 {
  34 #ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
  35     using spirit::eoi;
  36 #endif
  37     using spirit::eoi_type;
  38
  39     struct eoi_parser : primitive_parser<eoi_parser>
  40     {
  41         template <typename Context, typename Iterator>
  42         struct attribute
  43         {
  44             typedef unused_type type;
  45         };
  46
  47         template <typename Iterator, typename Context
  48           , typename Skipper, typename Attribute>
  49         bool parse(Iterator& first, Iterator const& last
  50           , Context& /*context*/, Skipper const& skipper
  51           , Attribute& /*attr*/) const
  52         {
  53             qi::skip_over(first, last, skipper);
  54             return first == last;
  55         }
  56
  57         template <typename Context>
  58         info what(Context& /*context*/) const
  59         {
  60             return info("eoi");
  61         }
  62     };
  63
  64     ///////////////////////////////////////////////////////////////////////////
  65     // Parser generators: make_xxx function (objects)
  66     ///////////////////////////////////////////////////////////////////////////
  67     template <typename Modifiers>
  68     struct make_primitive<tag::eoi, Modifiers>
  69     {
  70         typedef eoi_parser result_type;
  71         result_type operator()(unused_type, unused_type) const
  72         {
  73             return result_type();
  74         }
  75     };
  76 }}}
  77
  78 #endif
  79
  80