diff options
Diffstat (limited to 'contrib/src/boost/core/enable_if.hpp')
-rw-r--r-- | contrib/src/boost/core/enable_if.hpp | 256 |
1 files changed, 128 insertions, 128 deletions
diff --git a/contrib/src/boost/core/enable_if.hpp b/contrib/src/boost/core/enable_if.hpp index 2816bfc..5dcef1e 100644 --- a/contrib/src/boost/core/enable_if.hpp +++ b/contrib/src/boost/core/enable_if.hpp @@ -1,128 +1,128 @@ -// Boost enable_if library
-
-// Copyright 2003 (c) The Trustees of Indiana University.
-
-// 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)
-
-// Authors: Jaakko Jarvi (jajarvi at osl.iu.edu)
-// Jeremiah Willcock (jewillco at osl.iu.edu)
-// Andrew Lumsdaine (lums at osl.iu.edu)
-
-
-#ifndef BOOST_CORE_ENABLE_IF_HPP
-#define BOOST_CORE_ENABLE_IF_HPP
-
-#include "boost/config.hpp"
-
-// Even the definition of enable_if causes problems on some compilers,
-// so it's macroed out for all compilers that do not support SFINAE
-
-#ifndef BOOST_NO_SFINAE
-
-namespace boost
-{
- template<typename T, typename R=void>
- struct enable_if_has_type
- {
- typedef R type;
- };
-
- template <bool B, class T = void>
- struct enable_if_c {
- typedef T type;
- };
-
- template <class T>
- struct enable_if_c<false, T> {};
-
- template <class Cond, class T = void>
- struct enable_if : public enable_if_c<Cond::value, T> {};
-
- template <bool B, class T>
- struct lazy_enable_if_c {
- typedef typename T::type type;
- };
-
- template <class T>
- struct lazy_enable_if_c<false, T> {};
-
- template <class Cond, class T>
- struct lazy_enable_if : public lazy_enable_if_c<Cond::value, T> {};
-
-
- template <bool B, class T = void>
- struct disable_if_c {
- typedef T type;
- };
-
- template <class T>
- struct disable_if_c<true, T> {};
-
- template <class Cond, class T = void>
- struct disable_if : public disable_if_c<Cond::value, T> {};
-
- template <bool B, class T>
- struct lazy_disable_if_c {
- typedef typename T::type type;
- };
-
- template <class T>
- struct lazy_disable_if_c<true, T> {};
-
- template <class Cond, class T>
- struct lazy_disable_if : public lazy_disable_if_c<Cond::value, T> {};
-
-} // namespace boost
-
-#else
-
-namespace boost {
-
- namespace detail { typedef void enable_if_default_T; }
-
- template <typename T>
- struct enable_if_does_not_work_on_this_compiler;
-
- template<typename T, typename R=void>
- struct enable_if_has_type : enable_if_does_not_work_on_this_compiler<T>
- { };
-
- template <bool B, class T = detail::enable_if_default_T>
- struct enable_if_c : enable_if_does_not_work_on_this_compiler<T>
- { };
-
- template <bool B, class T = detail::enable_if_default_T>
- struct disable_if_c : enable_if_does_not_work_on_this_compiler<T>
- { };
-
- template <bool B, class T = detail::enable_if_default_T>
- struct lazy_enable_if_c : enable_if_does_not_work_on_this_compiler<T>
- { };
-
- template <bool B, class T = detail::enable_if_default_T>
- struct lazy_disable_if_c : enable_if_does_not_work_on_this_compiler<T>
- { };
-
- template <class Cond, class T = detail::enable_if_default_T>
- struct enable_if : enable_if_does_not_work_on_this_compiler<T>
- { };
-
- template <class Cond, class T = detail::enable_if_default_T>
- struct disable_if : enable_if_does_not_work_on_this_compiler<T>
- { };
-
- template <class Cond, class T = detail::enable_if_default_T>
- struct lazy_enable_if : enable_if_does_not_work_on_this_compiler<T>
- { };
-
- template <class Cond, class T = detail::enable_if_default_T>
- struct lazy_disable_if : enable_if_does_not_work_on_this_compiler<T>
- { };
-
-} // namespace boost
-
-#endif // BOOST_NO_SFINAE
-
-#endif
+// Boost enable_if library + +// Copyright 2003 (c) The Trustees of Indiana University. + +// 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) + +// Authors: Jaakko Jarvi (jajarvi at osl.iu.edu) +// Jeremiah Willcock (jewillco at osl.iu.edu) +// Andrew Lumsdaine (lums at osl.iu.edu) + + +#ifndef BOOST_CORE_ENABLE_IF_HPP +#define BOOST_CORE_ENABLE_IF_HPP + +#include "boost/config.hpp" + +// Even the definition of enable_if causes problems on some compilers, +// so it's macroed out for all compilers that do not support SFINAE + +#ifndef BOOST_NO_SFINAE + +namespace boost +{ + template<typename T, typename R=void> + struct enable_if_has_type + { + typedef R type; + }; + + template <bool B, class T = void> + struct enable_if_c { + typedef T type; + }; + + template <class T> + struct enable_if_c<false, T> {}; + + template <class Cond, class T = void> + struct enable_if : public enable_if_c<Cond::value, T> {}; + + template <bool B, class T> + struct lazy_enable_if_c { + typedef typename T::type type; + }; + + template <class T> + struct lazy_enable_if_c<false, T> {}; + + template <class Cond, class T> + struct lazy_enable_if : public lazy_enable_if_c<Cond::value, T> {}; + + + template <bool B, class T = void> + struct disable_if_c { + typedef T type; + }; + + template <class T> + struct disable_if_c<true, T> {}; + + template <class Cond, class T = void> + struct disable_if : public disable_if_c<Cond::value, T> {}; + + template <bool B, class T> + struct lazy_disable_if_c { + typedef typename T::type type; + }; + + template <class T> + struct lazy_disable_if_c<true, T> {}; + + template <class Cond, class T> + struct lazy_disable_if : public lazy_disable_if_c<Cond::value, T> {}; + +} // namespace boost + +#else + +namespace boost { + + namespace detail { typedef void enable_if_default_T; } + + template <typename T> + struct enable_if_does_not_work_on_this_compiler; + + template<typename T, typename R=void> + struct enable_if_has_type : enable_if_does_not_work_on_this_compiler<T> + { }; + + template <bool B, class T = detail::enable_if_default_T> + struct enable_if_c : enable_if_does_not_work_on_this_compiler<T> + { }; + + template <bool B, class T = detail::enable_if_default_T> + struct disable_if_c : enable_if_does_not_work_on_this_compiler<T> + { }; + + template <bool B, class T = detail::enable_if_default_T> + struct lazy_enable_if_c : enable_if_does_not_work_on_this_compiler<T> + { }; + + template <bool B, class T = detail::enable_if_default_T> + struct lazy_disable_if_c : enable_if_does_not_work_on_this_compiler<T> + { }; + + template <class Cond, class T = detail::enable_if_default_T> + struct enable_if : enable_if_does_not_work_on_this_compiler<T> + { }; + + template <class Cond, class T = detail::enable_if_default_T> + struct disable_if : enable_if_does_not_work_on_this_compiler<T> + { }; + + template <class Cond, class T = detail::enable_if_default_T> + struct lazy_enable_if : enable_if_does_not_work_on_this_compiler<T> + { }; + + template <class Cond, class T = detail::enable_if_default_T> + struct lazy_disable_if : enable_if_does_not_work_on_this_compiler<T> + { }; + +} // namespace boost + +#endif // BOOST_NO_SFINAE + +#endif |