/*============================================================================= | |
Copyright (c) 2001-2011 Joel de Guzman | |
Copyright (c) 2009 Francois Barel | |
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_PARAMETERIZED_AUGUST_09_2009_0539AM) | |
#define BOOST_SPIRIT_PARAMETERIZED_AUGUST_09_2009_0539AM | |
#if defined(_MSC_VER) | |
#pragma once | |
#endif | |
#include <boost/ref.hpp> | |
#include <boost/spirit/home/qi/parser.hpp> | |
namespace boost { namespace spirit { namespace qi | |
{ | |
/////////////////////////////////////////////////////////////////////////// | |
// parameterized_nonterminal: parser representing the invocation of a | |
// nonterminal, passing inherited attributes | |
/////////////////////////////////////////////////////////////////////////// | |
template <typename Subject, typename Params> | |
struct parameterized_nonterminal | |
: parser<parameterized_nonterminal<Subject, Params> > | |
{ | |
parameterized_nonterminal(Subject const& subject, Params const& params) | |
: ref(subject), params(params) | |
{ | |
} | |
template <typename Context, typename Iterator> | |
struct attribute | |
// Forward to subject. | |
: 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 | |
{ | |
// Forward to subject, passing the additional | |
// params argument to parse. | |
return ref.get().parse(first, last, context, skipper, attr, params); | |
} | |
template <typename Context> | |
info what(Context& context) const | |
{ | |
// Forward to subject. | |
return ref.get().what(context); | |
} | |
boost::reference_wrapper<Subject const> ref; | |
Params params; | |
}; | |
}}} | |
#endif |