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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libstdc++-v3/include/ext/pb_ds/detail/type_utils.hpp | |
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Diffstat (limited to 'libstdc++-v3/include/ext/pb_ds/detail/type_utils.hpp')
-rw-r--r-- | libstdc++-v3/include/ext/pb_ds/detail/type_utils.hpp | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/libstdc++-v3/include/ext/pb_ds/detail/type_utils.hpp b/libstdc++-v3/include/ext/pb_ds/detail/type_utils.hpp new file mode 100644 index 000000000..143110c0a --- /dev/null +++ b/libstdc++-v3/include/ext/pb_ds/detail/type_utils.hpp @@ -0,0 +1,167 @@ +// -*- C++ -*- + +// Copyright (C) 2005, 2006, 2007, 2009, 2010 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License as published by the Free Software +// Foundation; either version 3, or (at your option) any later +// version. + +// This library is distributed in the hope that it will be useful, but +// WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. + +// Permission to use, copy, modify, sell, and distribute this software +// is hereby granted without fee, provided that the above copyright +// notice appears in all copies, and that both that copyright notice +// and this permission notice appear in supporting documentation. None +// of the above authors, nor IBM Haifa Research Laboratories, make any +// representation about the suitability of this software for any +// purpose. It is provided "as is" without express or implied +// warranty. + +/** + * @file type_utils.hpp + * Contains utilities for handnling types. All of these classes are based on + * Modern C++ by Andrei Alxandrescu. + */ + +#ifndef PB_DS_TYPE_UTILS_HPP +#define PB_DS_TYPE_UTILS_HPP + +#include <cstddef> +#include <utility> +#include <tr1/type_traits> +#include <ext/type_traits.h> +#include <ext/numeric_traits.h> + +namespace __gnu_pbds +{ + namespace detail + { + using std::tr1::is_same; + using std::tr1::is_const; + using std::tr1::is_pointer; + using std::tr1::is_reference; + using std::tr1::is_fundamental; + using std::tr1::is_member_object_pointer; + using std::tr1::is_member_pointer; + using std::tr1::is_base_of; + using std::tr1::remove_const; + using std::tr1::remove_reference; + + // Need integral_const<bool, true> <-> integral_const<int, 1>, so + // because of this use the following typedefs instead of importing + // std::tr1's. + using std::tr1::integral_constant; + typedef std::tr1::integral_constant<int, 1> true_type; + typedef std::tr1::integral_constant<int, 0> false_type; + + using __gnu_cxx::__conditional_type; + using __gnu_cxx::__numeric_traits; + + template<typename T> + struct is_const_pointer + { + enum + { + value = is_const<T>::value && is_pointer<T>::value + }; + }; + + template<typename T> + struct is_const_reference + { + enum + { + value = is_const<T>::value && is_reference<T>::value + }; + }; + + template<typename T> + struct is_simple + { + enum + { + value = is_fundamental<typename remove_const<T>::type>::value + || is_pointer<typename remove_const<T>::type>::value + || is_member_pointer<T>::value + }; + }; + + template<typename T> + class is_pair + { + private: + template<typename U> + struct is_pair_imp + { + enum + { + value = 0 + }; + }; + + template<typename U, typename V> + struct is_pair_imp<std::pair<U,V> > + { + enum + { + value = 1 + }; + }; + + public: + enum + { + value = is_pair_imp<T>::value + }; + }; + + // Use C++0x's static_assert if possible. +#ifdef __GXX_EXPERIMENTAL_CXX0X__ +#define PB_DS_STATIC_ASSERT(UNIQUE, E) static_assert(E, #UNIQUE) +#else + template<bool> + struct __static_assert; + + template<> + struct __static_assert<true> + { }; + + template<int> + struct __static_assert_dumclass + { + enum + { + v = 1 + }; + }; + +#define PB_DS_STATIC_ASSERT(UNIQUE, E) \ + typedef __gnu_pbds::detail::__static_assert_dumclass<sizeof(__gnu_pbds::detail::__static_assert<bool(E)>)> UNIQUE##__static_assert_type + +#endif + + template<typename Type> + struct type_to_type + { + typedef Type type; + }; + } // namespace detail +} // namespace __gnu_pbds + +#endif |