ceph/src/boost/libs/spirit/include/boost/spirit/home/x3/operator/plus.hpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2014 Joel de Guzman
   3     Copyright (c) 2001-2011 Hartmut Kaiser
   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(SPIRIT_PLUS_MARCH_13_2007_0127PM)
   9 #define SPIRIT_PLUS_MARCH_13_2007_0127PM
  10
  11 #include <boost/spirit/home/x3/core/parser.hpp>
  12 #include <boost/spirit/home/x3/support/traits/container_traits.hpp>
  13 #include <boost/spirit/home/x3/support/traits/attribute_of.hpp>
  14 #include <boost/spirit/home/x3/core/detail/parse_into_container.hpp>
  15
  16 namespace boost { namespace spirit { namespace x3
  17 {
  18     template <typename Subject>
  19     struct plus : unary_parser<Subject, plus<Subject>>
  20     {
  21         typedef unary_parser<Subject, plus<Subject>> base_type;
  22         static bool const handles_container = true;
  23
  24         plus(Subject const& subject)
  25           : base_type(subject) {}
  26
  27         template <typename Iterator, typename Context
  28           , typename RContext, typename Attribute>
  29         bool parse(Iterator& first, Iterator const& last
  30           , Context const& context, RContext& rcontext, Attribute& attr) const
  31         {
  32             if (!detail::parse_into_container(
  33                 this->subject, first, last, context, rcontext, attr))
  34                 return false;
  35
  36             while (detail::parse_into_container(
  37                 this->subject, first, last, context, rcontext, attr))
  38                 ;
  39             return true;
  40         }
  41     };
  42
  43     template <typename Subject>
  44     inline plus<typename extension::as_parser<Subject>::value_type>
  45     operator+(Subject const& subject)
  46     {
  47         return { as_parser(subject) };
  48     }
  49 }}}
  50
  51 namespace boost { namespace spirit { namespace x3 { namespace traits
  52 {
  53     template <typename Subject, typename Context>
  54     struct attribute_of<x3::plus<Subject>, Context>
  55         : build_container<
  56             typename attribute_of<Subject, Context>::type> {};
  57 }}}}
  58
  59 #endif