ceph/src/boost/boost/spirit/home/karma/auxiliary/eol.hpp

   1 //  Copyright (c) 2001-2011 Hartmut Kaiser
   2 //
   3 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #if !defined(BOOST_SPIRIT_KARMA_EOL_JUL_08_2008_1014AM)
   7 #define BOOST_SPIRIT_KARMA_EOL_JUL_08_2008_1014AM
   8
   9 #if defined(_MSC_VER)
  10 #pragma once
  11 #endif
  12
  13 #include <boost/spirit/home/support/common_terminals.hpp>
  14 #include <boost/spirit/home/support/info.hpp>
  15 #include <boost/spirit/home/support/unused.hpp>
  16 #include <boost/spirit/home/karma/detail/attributes.hpp>
  17 #include <boost/spirit/home/karma/domain.hpp>
  18 #include <boost/spirit/home/karma/meta_compiler.hpp>
  19 #include <boost/spirit/home/karma/delimit_out.hpp>
  20 #include <boost/spirit/home/karma/detail/generate_to.hpp>
  21
  22 namespace boost { namespace spirit
  23 {
  24     ///////////////////////////////////////////////////////////////////////////
  25     // Enablers
  26     ///////////////////////////////////////////////////////////////////////////
  27     template <>
  28     struct use_terminal<karma::domain, tag::eol>       // enables eol
  29       : mpl::true_ {};
  30
  31 }}
  32
  33 ///////////////////////////////////////////////////////////////////////////////
  34 namespace boost { namespace spirit { namespace karma
  35 {
  36 #ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
  37     using boost::spirit::eol;
  38 #endif
  39     using boost::spirit::eol_type;
  40
  41     struct eol_generator : primitive_generator<eol_generator>
  42     {
  43         template <typename Context, typename Unused>
  44         struct attribute
  45         {
  46             typedef unused_type type;
  47         };
  48
  49         template <
  50             typename OutputIterator, typename Context, typename Delimiter
  51           , typename Attribute>
  52         static bool generate(OutputIterator& sink, Context&, Delimiter const& d
  53           , Attribute const& /*attr*/)
  54         {
  55             return detail::generate_to(sink, '\n') &&
  56                    karma::delimit_out(sink, d);   // always do post-delimiting
  57         }
  58
  59         template <typename Context>
  60         info what(Context const& /*context*/) const
  61         {
  62             return info("eol");
  63         }
  64     };
  65
  66     ///////////////////////////////////////////////////////////////////////////
  67     // Generator generators: make_xxx function (objects)
  68     ///////////////////////////////////////////////////////////////////////////
  69     template <typename Modifiers>
  70     struct make_primitive<tag::eol, Modifiers>
  71     {
  72         typedef eol_generator result_type;
  73         result_type operator()(unused_type, unused_type) const
  74         {
  75             return result_type();
  76         }
  77     };
  78
  79 }}}
  80
  81 #endif