ceph/src/boost/boost/spirit/home/lex/lexer/support_functions_expression.hpp

   1 //  Copyright (c) 2001-2011 Hartmut Kaiser
   2 //  Copyright (c)      2011 Thomas Heller
   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_LEX_SUPPORT_FUNCTIONS_EXPRESSION_MAR_22_2011_0711PM)
   8 #define SPIRIT_LEX_SUPPORT_FUNCTIONS_EXPRESSION_MAR_22_2011_0711PM
   9
  10 #if defined(_MSC_VER)
  11 #pragma once
  12 #endif
  13
  14 #include <boost/spirit/include/phoenix_core.hpp>
  15
  16 namespace boost { namespace spirit { namespace lex
  17 {
  18     template <typename> struct less_type;
  19     struct more_type;
  20     template <typename, typename> struct lookahead_type;
  21 }}}
  22
  23 ///////////////////////////////////////////////////////////////////////////////
  24
  25 BOOST_PHOENIX_DEFINE_EXPRESSION(
  26     (boost)(spirit)(lex)(less)
  27   , (boost::phoenix::meta_grammar)
  28 )
  29
  30 BOOST_PHOENIX_DEFINE_EXPRESSION(
  31     (boost)(spirit)(lex)(lookahead)
  32   , (boost::phoenix::meta_grammar)
  33     (boost::phoenix::meta_grammar)
  34 )
  35
  36 namespace boost { namespace phoenix
  37 {
  38
  39     namespace result_of
  40     {
  41         template <>
  42         struct is_nullary<custom_terminal<boost::spirit::lex::more_type> >
  43           : mpl::false_
  44         {};
  45     }
  46
  47     template <typename Dummy>
  48     struct is_custom_terminal<boost::spirit::lex::more_type, Dummy> : mpl::true_ {};
  49
  50     template <typename Dummy>
  51     struct custom_terminal<boost::spirit::lex::more_type, Dummy>
  52         : proto::call<
  53             v2_eval(
  54                 proto::make<boost::spirit::lex::more_type()>
  55               , proto::call<functional::env(proto::_state)>
  56             )
  57         >
  58     {};
  59
  60
  61     template <typename Dummy>
  62     struct is_nullary::when<spirit::lex::rule::less, Dummy>
  63       : proto::make<mpl::false_()>
  64     {};
  65
  66     template <typename Dummy>
  67     struct default_actions::when<spirit::lex::rule::less, Dummy>
  68       : proto::call<
  69             v2_eval(
  70                 proto::make<
  71                     spirit::lex::less_type<proto::_child0>(proto::_child0)
  72                 >
  73               , _env
  74             )
  75         >
  76     {};
  77
  78     template <typename Dummy>
  79     struct is_nullary::when<spirit::lex::rule::lookahead, Dummy>
  80       : proto::make<mpl::false_()>
  81     {};
  82
  83     template <typename Dummy>
  84     struct default_actions::when<spirit::lex::rule::lookahead, Dummy>
  85       : proto::call<
  86             v2_eval(
  87                 proto::make<
  88                     spirit::lex::lookahead_type<
  89                         proto::_child0
  90                       , proto::_child1
  91                     >(
  92                         proto::_child0
  93                       , proto::_child1
  94                     )
  95                 >
  96               , _env
  97             )
  98         >
  99     {};
 100 }}
 101
 102 #endif