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/*=============================================================================
Copyright (c) 2001-2014 Joel de Guzman
Copyright (c) 2014 Agustin Berge
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_X3_IS_PARSER_MAY_20_2013_0235PM)
#define BOOST_SPIRIT_X3_IS_PARSER_MAY_20_2013_0235PM
#if defined(_MSC_VER)
#pragma once
#endif
#include <boost/mpl/bool.hpp>
#include <boost/spirit/home/x3/core/parser.hpp>
#include <boost/spirit/home/x3/support/utility/sfinae.hpp>
namespace boost { namespace spirit { namespace x3 { namespace traits
{
///////////////////////////////////////////////////////////////////////////
// is_parser<T>: metafunction that evaluates to mpl::true_ if a type T
// can be used as a parser, mpl::false_ otherwise
///////////////////////////////////////////////////////////////////////////
template <typename T, typename Enable = void>
struct is_parser
: mpl::false_
{};
template <typename T>
struct is_parser<T, typename disable_if_substitution_failure<
typename extension::as_parser<T>::type>::type>
: mpl::true_
{};
}}}}
#endif
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