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// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
// Copyright Antony Polukhin, 2011-2014.
//
// 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)
//
// what: lexical_cast custom keyword cast
// who: contributed by Kevlin Henney,
// enhanced with contributions from Terje Slettebo,
// with additional fixes and suggestions from Gennaro Prota,
// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
// Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
// Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2014
#ifndef BOOST_LEXICAL_CAST_DETAIL_IS_CHARACTER_HPP
#define BOOST_LEXICAL_CAST_DETAIL_IS_CHARACTER_HPP
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#include <boost/type_traits/is_same.hpp>
namespace boost {
namespace detail // is_character<...>
{
// returns true, if T is one of the character types
template < typename T >
struct is_character
{
typedef boost::type_traits::ice_or<
boost::is_same< T, char >::value,
#if !defined(BOOST_NO_STRINGSTREAM) && !defined(BOOST_NO_STD_WSTRING)
boost::is_same< T, wchar_t >::value,
#endif
#ifndef BOOST_NO_CXX11_CHAR16_T
boost::is_same< T, char16_t >::value,
#endif
#ifndef BOOST_NO_CXX11_CHAR32_T
boost::is_same< T, char32_t >::value,
#endif
boost::is_same< T, unsigned char >::value,
boost::is_same< T, signed char >::value
> result_type;
BOOST_STATIC_CONSTANT(bool, value = (result_type::value) );
};
}
}
#endif // BOOST_LEXICAL_CAST_DETAIL_IS_CHARACTER_HPP
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