153 lines
4.9 KiB
C++
153 lines
4.9 KiB
C++
// Copyright (c) 2009 Chris Hoeppler
|
|
//
|
|
// 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_REPOSITORY_QI_CONFIX_JUN_22_2009_1041AM)
|
|
#define BOOST_SPIRIT_REPOSITORY_QI_CONFIX_JUN_22_2009_1041AM
|
|
|
|
#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/auxiliary/lazy.hpp>
|
|
#include <boost/spirit/home/support/common_terminals.hpp>
|
|
#include <boost/spirit/home/support/info.hpp>
|
|
#include <boost/spirit/home/support/unused.hpp>
|
|
#include <boost/spirit/home/qi/detail/attributes.hpp>
|
|
|
|
#include <boost/spirit/repository/home/support/confix.hpp>
|
|
|
|
#include <boost/fusion/include/vector.hpp>
|
|
#include <boost/mpl/or.hpp>
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
namespace boost { namespace spirit
|
|
{
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Enablers
|
|
///////////////////////////////////////////////////////////////////////////
|
|
|
|
// enables confix(..., ...)[]
|
|
template <typename Prefix, typename Suffix>
|
|
struct use_directive<qi::domain
|
|
, terminal_ex<repository::tag::confix, fusion::vector2<Prefix, Suffix> > >
|
|
: mpl::true_ {};
|
|
|
|
// enables *lazy* confix(..., ...)[]
|
|
template <>
|
|
struct use_lazy_directive<qi::domain, repository::tag::confix, 2>
|
|
: mpl::true_ {};
|
|
|
|
}}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
namespace boost { namespace spirit { namespace repository { namespace qi
|
|
{
|
|
#ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
|
|
using repository::confix;
|
|
#endif
|
|
using repository::confix_type;
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// the confix() generated parser
|
|
template <typename Subject, typename Prefix, typename Suffix>
|
|
struct confix_parser
|
|
: spirit::qi::unary_parser<confix_parser<Subject, Prefix, Suffix> >
|
|
{
|
|
typedef Subject subject_type;
|
|
|
|
template <typename Context, typename Iterator>
|
|
struct attribute
|
|
: traits::attribute_of<subject_type, Context, Iterator>
|
|
{};
|
|
|
|
confix_parser(Subject const& subject, Prefix const& prefix
|
|
, Suffix const& suffix)
|
|
: subject(subject), prefix(prefix), suffix(suffix) {}
|
|
|
|
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 iter = first;
|
|
|
|
if (!(prefix.parse(iter, last, context, skipper, unused) &&
|
|
subject.parse(iter, last, context, skipper, attr) &&
|
|
suffix.parse(iter, last, context, skipper, unused)))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
first = iter;
|
|
return true;
|
|
}
|
|
|
|
template <typename Context>
|
|
info what(Context const& ctx) const
|
|
{
|
|
return info("confix", subject.what(ctx));
|
|
}
|
|
|
|
Subject subject;
|
|
Prefix prefix;
|
|
Suffix suffix;
|
|
};
|
|
|
|
}}}}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
namespace boost { namespace spirit { namespace qi
|
|
{
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Parser generators: make_xxx function (objects)
|
|
///////////////////////////////////////////////////////////////////////////
|
|
|
|
// creates confix(..., ...)[] directive
|
|
template <typename Prefix, typename Suffix, typename Subject
|
|
, typename Modifiers>
|
|
struct make_directive<
|
|
terminal_ex<repository::tag::confix, fusion::vector2<Prefix, Suffix> >
|
|
, Subject, Modifiers>
|
|
{
|
|
typedef typename
|
|
result_of::compile<qi::domain, Prefix, Modifiers>::type
|
|
prefix_type;
|
|
typedef typename
|
|
result_of::compile<qi::domain, Suffix, Modifiers>::type
|
|
suffix_type;
|
|
|
|
typedef repository::qi::confix_parser<
|
|
Subject, prefix_type, suffix_type> result_type;
|
|
|
|
template <typename Terminal>
|
|
result_type operator()(Terminal const& term, Subject const& subject
|
|
, Modifiers const& modifiers) const
|
|
{
|
|
return result_type(subject
|
|
, compile<qi::domain>(fusion::at_c<0>(term.args), modifiers)
|
|
, compile<qi::domain>(fusion::at_c<1>(term.args), modifiers));
|
|
}
|
|
};
|
|
|
|
}}}
|
|
|
|
namespace boost { namespace spirit { namespace traits
|
|
{
|
|
template <typename Subject, typename Prefix, typename Suffix>
|
|
struct has_semantic_action<
|
|
repository::qi::confix_parser<Subject, Prefix, Suffix> >
|
|
: mpl::or_<
|
|
has_semantic_action<Subject>
|
|
, has_semantic_action<Prefix>
|
|
, has_semantic_action<Suffix>
|
|
> {};
|
|
}}}
|
|
|
|
#endif
|
|
|