ceph/src/boost/boost/spirit/home/karma/directive/upper_lower_case.hpp

   1 //  Copyright (c) 2001-2011 Hartmut Kaiser
   2 //  Copyright (c) 2001-2011 Joel de Guzman
   3 //
   4 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
   5 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6
   7 #if !defined(SPIRIT_UPPER_LOWER_CASE_JANUARY_19_2009_1142AM)
   8 #define SPIRIT_UPPER_LOWER_CASE_JANUARY_19_2009_1142AM
   9
  10 #if defined(_MSC_VER)
  11 #pragma once
  12 #endif
  13
  14 #include <boost/spirit/home/support/common_terminals.hpp>
  15 #include <boost/spirit/home/support/modify.hpp>
  16 #include <boost/spirit/home/karma/domain.hpp>
  17 #include <boost/spirit/home/karma/meta_compiler.hpp>
  18
  19 namespace boost { namespace spirit
  20 {
  21     ///////////////////////////////////////////////////////////////////////////
  22     // Enablers
  23     ///////////////////////////////////////////////////////////////////////////
  24     template <typename CharEncoding>
  25     struct use_directive<
  26         karma::domain, tag::char_code<tag::upper, CharEncoding> > // enables upper
  27       : mpl::true_ {};
  28
  29     template <typename CharEncoding>
  30     struct use_directive<
  31         karma::domain, tag::char_code<tag::lower, CharEncoding> > // enables lower
  32       : mpl::true_ {};
  33
  34     ///////////////////////////////////////////////////////////////////////////
  35     template <typename CharEncoding>
  36     struct is_modifier_directive<karma::domain
  37         , tag::char_code<tag::upper, CharEncoding> >
  38       : mpl::true_ {};
  39
  40     template <typename CharEncoding>
  41     struct is_modifier_directive<karma::domain
  42         , tag::char_code<tag::lower, CharEncoding> >
  43       : mpl::true_ {};
  44
  45     ///////////////////////////////////////////////////////////////////////////
  46     // Don't add tag::upper or tag::lower if there is already one of those in
  47     // the modifier list
  48     template <typename Current, typename CharEncoding>
  49     struct compound_modifier<
  50             Current
  51           , tag::char_code<tag::upper, CharEncoding>
  52           , typename enable_if<
  53                 has_modifier<Current, tag::char_code<tag::lower, CharEncoding> >
  54             >::type
  55           >
  56       : Current
  57     {
  58         compound_modifier()
  59           : Current() {}
  60
  61         compound_modifier(Current const& current,
  62                 tag::char_code<tag::upper, CharEncoding> const&)
  63           : Current(current) {}
  64     };
  65
  66     template <typename Current, typename CharEncoding>
  67     struct compound_modifier<
  68             Current
  69           , tag::char_code<tag::lower, CharEncoding>
  70           , typename enable_if<
  71                 has_modifier<Current, tag::char_code<tag::upper, CharEncoding> >
  72             >::type
  73           >
  74       : Current
  75     {
  76         compound_modifier()
  77           : Current() {}
  78
  79         compound_modifier(Current const& current,
  80                 tag::char_code<tag::lower, CharEncoding> const&)
  81           : Current(current) {}
  82     };
  83 }}
  84
  85 #endif