ceph/src/boost/boost/spirit/home/karma/directive/strict_relaxed.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(SPIRIT_STRICT_RELAXED_APR_22_2010_0959AM)
   7 #define SPIRIT_STRICT_RELAXED_APR_22_2010_0959AM
   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/modify.hpp>
  15 #include <boost/spirit/home/karma/domain.hpp>
  16 #include <boost/spirit/home/karma/meta_compiler.hpp>
  17
  18 namespace boost { namespace spirit
  19 {
  20     ///////////////////////////////////////////////////////////////////////////
  21     // Enablers
  22     ///////////////////////////////////////////////////////////////////////////
  23     template <>
  24     struct use_directive<karma::domain, tag::strict>  // enables strict[]
  25       : mpl::true_ {};
  26
  27     template <>
  28     struct use_directive<karma::domain, tag::relaxed> // enables relaxed[]
  29       : mpl::true_ {};
  30
  31     ///////////////////////////////////////////////////////////////////////////
  32     template <>
  33     struct is_modifier_directive<karma::domain, tag::strict>
  34       : mpl::true_ {};
  35
  36     template <>
  37     struct is_modifier_directive<karma::domain, tag::relaxed>
  38       : mpl::true_ {};
  39
  40     ///////////////////////////////////////////////////////////////////////////
  41     // Don't add tag::strict or tag::relaxed if there is already one of those
  42     // in the modifier list
  43     template <typename Current>
  44     struct compound_modifier<Current, tag::strict
  45           , typename enable_if<has_modifier<Current, tag::relaxed> >::type>
  46       : Current
  47     {
  48         compound_modifier()
  49           : Current() {}
  50
  51         compound_modifier(Current const& current, tag::strict const&)
  52           : Current(current) {}
  53     };
  54
  55     template <typename Current>
  56     struct compound_modifier<Current, tag::relaxed
  57           , typename enable_if<has_modifier<Current, tag::strict> >::type>
  58       : Current
  59     {
  60         compound_modifier()
  61           : Current() {}
  62
  63         compound_modifier(Current const& current, tag::relaxed const&)
  64           : Current(current) {}
  65     };
  66
  67     namespace karma
  68     {
  69 #ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
  70         using boost::spirit::strict;
  71         using boost::spirit::relaxed;
  72 #endif
  73         using boost::spirit::strict_type;
  74         using boost::spirit::relaxed_type;
  75     }
  76 }}
  77
  78 #endif