ceph/src/boost/libs/spirit/include/boost/spirit/home/karma/nonterminal/detail/parameterized.hpp

   1 //  Copyright (c) 2001-2011 Joel de Guzman
   2 //  Copyright (c) 2001-2011 Hartmut Kaiser
   3 //  Copyright (c) 2009 Francois Barel
   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_KARMA_PARAMETERIZED_AUGUST_09_2009_0601AM)
   9 #define BOOST_SPIRIT_KARMA_PARAMETERIZED_AUGUST_09_2009_0601AM
  10
  11 #if defined(_MSC_VER)
  12 #pragma once
  13 #endif
  14
  15 #include <boost/ref.hpp>
  16
  17 #include <boost/spirit/home/support/handles_container.hpp>
  18 #include <boost/spirit/home/karma/generator.hpp>
  19
  20 namespace boost { namespace spirit { namespace karma
  21 {
  22     ///////////////////////////////////////////////////////////////////////////
  23     // parameterized_nonterminal: generator representing the invocation of a
  24     // nonterminal, passing inherited attributes
  25     ///////////////////////////////////////////////////////////////////////////
  26     template <typename Subject, typename Params>
  27     struct parameterized_nonterminal
  28       : generator<parameterized_nonterminal<Subject, Params> >
  29     {
  30         typedef mpl::int_<generator_properties::all_properties> properties;
  31
  32         parameterized_nonterminal(Subject const& subject, Params const& params)
  33           : ref(subject), params(params)
  34         {
  35         }
  36
  37         template <typename Context, typename Unused>
  38         struct attribute
  39             // Forward to subject.
  40           : Subject::template attribute<Context, Unused> {};
  41
  42         template <typename OutputIterator, typename Context, typename Delimiter
  43           , typename Attribute>
  44         bool generate(OutputIterator& sink, Context& context
  45           , Delimiter const& delim, Attribute const& attr) const
  46         {
  47             // Forward to subject, passing the additional
  48             // params argument to generate.
  49             return ref.get().generate(sink, context, delim, attr, params);
  50         }
  51
  52         template <typename Context>
  53         info what(Context& context) const
  54         {
  55             // Forward to subject.
  56             return ref.get().what(context);
  57         }
  58
  59         boost::reference_wrapper<Subject const> ref;
  60         Params params;
  61     };
  62 }}}
  63
  64 namespace boost { namespace spirit { namespace traits
  65 {
  66     ///////////////////////////////////////////////////////////////////////////
  67     template <typename Subject, typename Params, typename Attribute
  68       , typename Context, typename Iterator>
  69     struct handles_container<karma::parameterized_nonterminal<Subject, Params>
  70           , Attribute, Context, Iterator>
  71       : handles_container<typename remove_const<Subject>::type
  72         , Attribute, Context, Iterator>
  73     {};
  74 }}}
  75
  76 #endif