diff options
Diffstat (limited to 'contrib/src/boost/range/detail/extract_optional_type.hpp')
| -rw-r--r-- | contrib/src/boost/range/detail/extract_optional_type.hpp | 96 |
1 files changed, 48 insertions, 48 deletions
diff --git a/contrib/src/boost/range/detail/extract_optional_type.hpp b/contrib/src/boost/range/detail/extract_optional_type.hpp index 5142a31..0381434 100644 --- a/contrib/src/boost/range/detail/extract_optional_type.hpp +++ b/contrib/src/boost/range/detail/extract_optional_type.hpp @@ -1,48 +1,48 @@ -// Boost.Range library
-//
-// Copyright Arno Schoedl & Neil Groves 2009.
-// Use, modification and distribution is subject to 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)
-//
-// For more information, see http://www.boost.org/libs/range/
-//
-#ifndef BOOST_RANGE_DETAIL_EXTRACT_OPTIONAL_TYPE_HPP_INCLUDED
-#define BOOST_RANGE_DETAIL_EXTRACT_OPTIONAL_TYPE_HPP_INCLUDED
-
-#if defined(_MSC_VER)
-# pragma once
-#endif
-
-#include <boost/config.hpp>
-#include <boost/preprocessor/cat.hpp>
-#include <boost/mpl/has_xxx.hpp>
-
-#if !defined(BOOST_MPL_CFG_NO_HAS_XXX)
-
-// Defines extract_some_typedef<T> which exposes T::some_typedef as
-// extract_some_typedef<T>::type if T::some_typedef exists. Otherwise
-// extract_some_typedef<T> is empty.
-#define BOOST_RANGE_EXTRACT_OPTIONAL_TYPE( a_typedef ) \
- BOOST_MPL_HAS_XXX_TRAIT_DEF(a_typedef) \
- template< typename C, bool B = BOOST_PP_CAT(has_, a_typedef)<C>::value > \
- struct BOOST_PP_CAT(extract_, a_typedef) \
- {}; \
- template< typename C > \
- struct BOOST_PP_CAT(extract_, a_typedef)< C, true > \
- { \
- typedef BOOST_DEDUCED_TYPENAME C::a_typedef type; \
- };
-
-#else
-
-#define BOOST_RANGE_EXTRACT_OPTIONAL_TYPE( a_typedef ) \
- template< typename C > \
- struct BOOST_PP_CAT(extract_, a_typedef) \
- { \
- typedef BOOST_DEDUCED_TYPENAME C::a_typedef type; \
- };
-
-#endif
-
-#endif // include guard
+// Boost.Range library +// +// Copyright Arno Schoedl & Neil Groves 2009. +// Use, modification and distribution is subject to 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) +// +// For more information, see http://www.boost.org/libs/range/ +// +#ifndef BOOST_RANGE_DETAIL_EXTRACT_OPTIONAL_TYPE_HPP_INCLUDED +#define BOOST_RANGE_DETAIL_EXTRACT_OPTIONAL_TYPE_HPP_INCLUDED + +#if defined(_MSC_VER) +# pragma once +#endif + +#include <boost/config.hpp> +#include <boost/preprocessor/cat.hpp> +#include <boost/mpl/has_xxx.hpp> + +#if !defined(BOOST_MPL_CFG_NO_HAS_XXX) + +// Defines extract_some_typedef<T> which exposes T::some_typedef as +// extract_some_typedef<T>::type if T::some_typedef exists. Otherwise +// extract_some_typedef<T> is empty. +#define BOOST_RANGE_EXTRACT_OPTIONAL_TYPE( a_typedef ) \ + BOOST_MPL_HAS_XXX_TRAIT_DEF(a_typedef) \ + template< typename C, bool B = BOOST_PP_CAT(has_, a_typedef)<C>::value > \ + struct BOOST_PP_CAT(extract_, a_typedef) \ + {}; \ + template< typename C > \ + struct BOOST_PP_CAT(extract_, a_typedef)< C, true > \ + { \ + typedef BOOST_DEDUCED_TYPENAME C::a_typedef type; \ + }; + +#else + +#define BOOST_RANGE_EXTRACT_OPTIONAL_TYPE( a_typedef ) \ + template< typename C > \ + struct BOOST_PP_CAT(extract_, a_typedef) \ + { \ + typedef BOOST_DEDUCED_TYPENAME C::a_typedef type; \ + }; + +#endif + +#endif // include guard |