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 plusboost::spirit::x3::plus24 plus(Subject const& subject) 25 : base_type(subject) {} 26 27 template <typename Iterator, typename Context 28 , typename RContext, typename Attribute> parseboost::spirit::x3::plus29 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> operator +(Subject const & subject)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 60