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Diffstat (limited to '3rdParty/Boost/src/boost/spirit/home/qi/reference.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/spirit/home/qi/reference.hpp | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/spirit/home/qi/reference.hpp b/3rdParty/Boost/src/boost/spirit/home/qi/reference.hpp new file mode 100644 index 0000000..f6fcabc --- /dev/null +++ b/3rdParty/Boost/src/boost/spirit/home/qi/reference.hpp @@ -0,0 +1,69 @@ +/*============================================================================= + Copyright (c) 2001-2011 Joel de Guzman + + Distributed under the Boost Software License, Version 1.0. (See accompanying + file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +==============================================================================*/ +#if !defined(BOOST_SPIRIT_REFERENCE_OCTOBER_31_2008_1218AM) +#define BOOST_SPIRIT_REFERENCE_OCTOBER_31_2008_1218AM + +#if defined(_MSC_VER) +#pragma once +#endif + +#include <boost/spirit/home/qi/meta_compiler.hpp> +#include <boost/spirit/home/qi/parser.hpp> +#include <boost/spirit/home/support/info.hpp> +#include <boost/spirit/home/support/handles_container.hpp> +#include <boost/type_traits/remove_const.hpp> +#include <boost/ref.hpp> + +namespace boost { namespace spirit { namespace qi +{ + /////////////////////////////////////////////////////////////////////////// + // reference is a parser that references another parser (its Subject) + /////////////////////////////////////////////////////////////////////////// + template <typename Subject> + struct reference : parser<reference<Subject> > + { + typedef Subject subject_type; + + reference(Subject& subject) + : ref(subject) {} + + template <typename Context, typename Iterator> + struct attribute : Subject::template attribute<Context, Iterator> {}; + + template <typename Iterator, typename Context + , typename Skipper, typename Attribute> + bool parse(Iterator& first, Iterator const& last + , Context& context, Skipper const& skipper + , Attribute& attr) const + { + return ref.get().parse(first, last, context, skipper, attr); + } + + template <typename Context> + info what(Context& context) const + { + // the reference is transparent (does not add any info) + return ref.get().what(context); + } + + boost::reference_wrapper<Subject> ref; + }; +}}} + +namespace boost { namespace spirit { namespace traits +{ + /////////////////////////////////////////////////////////////////////////// + template <typename Subject, typename Attribute, typename Context + , typename Iterator> + struct handles_container<qi::reference<Subject>, Attribute, Context + , Iterator> + : handles_container<typename remove_const<Subject>::type + , Attribute, Context, Iterator> + {}; +}}} + +#endif |