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/*=============================================================================
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(SPIRIT_AND_PREDICATE_MARCH_23_2007_0617PM)
#define SPIRIT_AND_PREDICATE_MARCH_23_2007_0617PM
#if defined(_MSC_VER)
#pragma once
#endif
#include <boost/spirit/home/qi/domain.hpp>
#include <boost/spirit/home/qi/meta_compiler.hpp>
#include <boost/spirit/home/qi/parser.hpp>
#include <boost/spirit/home/qi/detail/attributes.hpp>
#include <boost/spirit/home/support/info.hpp>
#include <boost/spirit/home/support/has_semantic_action.hpp>
#include <boost/spirit/home/support/handles_container.hpp>
#include <boost/fusion/include/at.hpp>
namespace boost { namespace spirit
{
///////////////////////////////////////////////////////////////////////////
// Enablers
///////////////////////////////////////////////////////////////////////////
template <>
struct use_operator<qi::domain, proto::tag::address_of> // enables &p
: mpl::true_ {};
}}
namespace boost { namespace spirit { namespace qi
{
template <typename Subject>
struct and_predicate : unary_parser<and_predicate<Subject> >
{
typedef Subject subject_type;
template <typename Context, typename Iterator>
struct attribute
{
typedef unused_type type;
};
and_predicate(Subject const& subject)
: subject(subject) {}
template <typename Iterator, typename Context
, typename Skipper, typename Attribute>
bool parse(Iterator& first, Iterator const& last
, Context& context, Skipper const& skipper
, Attribute& /*attr*/) const
{
Iterator i = first;
return subject.parse(i, last, context, skipper, unused);
}
template <typename Context>
info what(Context& context) const
{
return info("and-predicate", subject.what(context));
}
Subject subject;
};
///////////////////////////////////////////////////////////////////////////
// Parser generators: make_xxx function (objects)
///////////////////////////////////////////////////////////////////////////
template <typename Elements, typename Modifiers>
struct make_composite<proto::tag::address_of, Elements, Modifiers>
: make_unary_composite<Elements, and_predicate>
{};
}}}
namespace boost { namespace spirit { namespace traits
{
///////////////////////////////////////////////////////////////////////////
template <typename Subject>
struct has_semantic_action<qi::and_predicate<Subject> >
: unary_has_semantic_action<Subject> {};
///////////////////////////////////////////////////////////////////////////
template <typename Subject, typename Attribute, typename Context
, typename Iterator>
struct handles_container<qi::and_predicate<Subject>, Attribute, Context
, Iterator>
: unary_handles_container<Subject, Attribute, Context, Iterator> {};
}}}
#endif
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