93 lines
3.1 KiB
C++
93 lines
3.1 KiB
C++
/*
|
|
* Copyright Andrey Semashev 2007 - 2015.
|
|
* 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)
|
|
*/
|
|
/*!
|
|
* \file support/spirit_qi.hpp
|
|
* \author Andrey Semashev
|
|
* \date 19.07.2009
|
|
*
|
|
* This header enables Boost.Spirit.Qi support for Boost.Log.
|
|
*/
|
|
|
|
#ifndef BOOST_LOG_SUPPORT_SPIRIT_QI_HPP_INCLUDED_
|
|
#define BOOST_LOG_SUPPORT_SPIRIT_QI_HPP_INCLUDED_
|
|
|
|
#include <boost/core/enable_if.hpp>
|
|
#include <boost/spirit/include/qi_parse.hpp>
|
|
#include <boost/spirit/include/qi_domain.hpp>
|
|
#include <boost/spirit/include/support_unused.hpp>
|
|
#include <boost/spirit/home/support/meta_compiler.hpp> // spirit::compile()
|
|
#include <boost/spirit/home/qi/nonterminal/nonterminal_fwd.hpp> // rule forward declaration
|
|
#include <boost/log/detail/config.hpp>
|
|
#include <boost/log/utility/functional/matches.hpp>
|
|
#include <boost/log/detail/header.hpp>
|
|
|
|
#ifdef BOOST_HAS_PRAGMA_ONCE
|
|
#pragma once
|
|
#endif
|
|
|
|
namespace boost {
|
|
|
|
BOOST_LOG_OPEN_NAMESPACE
|
|
|
|
namespace aux {
|
|
|
|
//! This tag type is used if an expression is recognized as a Boost.Spirit.Qi expression
|
|
struct boost_spirit_qi_expression_tag;
|
|
|
|
//! The metafunction detects the matching expression kind and returns a tag that is used to specialize \c match_traits
|
|
template< typename ExpressionT >
|
|
struct matching_expression_kind< ExpressionT, typename boost::enable_if_c< spirit::traits::matches< spirit::qi::domain, ExpressionT >::value >::type >
|
|
{
|
|
typedef boost_spirit_qi_expression_tag type;
|
|
};
|
|
|
|
//! The matching function implementation
|
|
template< typename ExpressionT >
|
|
struct match_traits< ExpressionT, boost_spirit_qi_expression_tag >
|
|
{
|
|
typedef typename spirit::result_of::compile< spirit::qi::domain, ExpressionT, spirit::unused_type >::type compiled_type;
|
|
|
|
static compiled_type compile(ExpressionT const& expr)
|
|
{
|
|
return spirit::compile< spirit::qi::domain >(expr);
|
|
}
|
|
|
|
template< typename StringT >
|
|
static bool matches(StringT const& str, ExpressionT const& expr)
|
|
{
|
|
typedef typename StringT::const_iterator const_iterator;
|
|
const_iterator it = str.begin(), end = str.end();
|
|
return (spirit::qi::parse(it, end, expr) && it == end);
|
|
}
|
|
};
|
|
|
|
//! The matching function implementation
|
|
template< typename IteratorT, typename T1, typename T2, typename T3, typename T4 >
|
|
struct match_traits< spirit::qi::rule< IteratorT, T1, T2, T3, T4 >, boost_spirit_qi_expression_tag >
|
|
{
|
|
typedef spirit::qi::rule< IteratorT, T1, T2, T3, T4 > compiled_type;
|
|
static compiled_type compile(compiled_type const& expr) { return expr; }
|
|
|
|
template< typename StringT >
|
|
static bool matches(StringT const& str, compiled_type const& expr)
|
|
{
|
|
typedef typename StringT::const_iterator const_iterator;
|
|
const_iterator it = str.begin(), end = str.end();
|
|
return (spirit::qi::parse(it, end, expr) && it == end);
|
|
}
|
|
};
|
|
|
|
} // namespace aux
|
|
|
|
BOOST_LOG_CLOSE_NAMESPACE // namespace log
|
|
|
|
} // namespace boost
|
|
|
|
#include <boost/log/detail/footer.hpp>
|
|
|
|
#endif // BOOST_LOG_SUPPORT_SPIRIT_QI_HPP_INCLUDED_
|