projects / ceph.git / blame
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|---|---|---|
| 7c673cae FG |
1 | // Copyright Kevlin Henney, 2000-2005. |
| 2 | // Copyright Alexander Nasonov, 2006-2010. | |
| 3 | // Copyright Antony Polukhin, 2011-2014. | |
| 4 | // | |
| 5 | // Distributed under the Boost Software License, Version 1.0. (See | |
| 6 | // accompanying file LICENSE_1_0.txt or copy at | |
| 7 | // http://www.boost.org/LICENSE_1_0.txt) | |
| 8 | // | |
| 9 | // what: lexical_cast custom keyword cast | |
| 10 | // who: contributed by Kevlin Henney, | |
| 11 | // enhanced with contributions from Terje Slettebo, | |
| 12 | // with additional fixes and suggestions from Gennaro Prota, | |
| 13 | // Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov, | |
| 14 | // Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann, | |
| 15 | // Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters | |
| 16 | // when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2014 | |
| 17 | ||
| 18 | #ifndef BOOST_LEXICAL_CAST_DETAIL_IS_CHARACTER_HPP | |
| 19 | #define BOOST_LEXICAL_CAST_DETAIL_IS_CHARACTER_HPP | |
| 20 | ||
| 21 | #include <boost/config.hpp> | |
| 22 | #ifdef BOOST_HAS_PRAGMA_ONCE | |
| 23 | # pragma once | |
| 24 | #endif | |
| 25 | ||
| 26 | #include <boost/mpl/bool.hpp> | |
| 27 | #include <boost/type_traits/is_same.hpp> | |
| 28 | ||
| 29 | namespace boost { | |
| 30 | ||
| 31 | namespace detail // is_character<...> | |
| 32 | { | |
| 33 | // returns true, if T is one of the character types | |
| 34 | template < typename T > | |
| 35 | struct is_character | |
| 36 | { | |
| 37 | typedef BOOST_DEDUCED_TYPENAME boost::mpl::bool_< | |
| 38 | boost::is_same< T, char >::value || | |
| 39 | #if !defined(BOOST_NO_STRINGSTREAM) && !defined(BOOST_NO_STD_WSTRING) | |
| 40 | boost::is_same< T, wchar_t >::value || | |
| 41 | #endif | |
| 42 | #ifndef BOOST_NO_CXX11_CHAR16_T | |
| 43 | boost::is_same< T, char16_t >::value || | |
| 44 | #endif | |
| 45 | #ifndef BOOST_NO_CXX11_CHAR32_T | |
| 46 | boost::is_same< T, char32_t >::value || | |
| 47 | #endif | |
| 48 | boost::is_same< T, unsigned char >::value || | |
| 49 | boost::is_same< T, signed char >::value | |
| 50 | > type; | |
| 51 | ||
| 52 | BOOST_STATIC_CONSTANT(bool, value = (type::value) ); | |
| 53 | }; | |
| 54 | } | |
| 55 | } | |
| 56 | ||
| 57 | #endif // BOOST_LEXICAL_CAST_DETAIL_IS_CHARACTER_HPP | |
| 58 |