/Src/Dependencies/Boost/boost/interprocess/containers/container/detail/mpl.hpp
http://hadesmem.googlecode.com/ · C++ Header · 152 lines · 111 code · 27 blank · 14 comment · 3 complexity · 2b6795f54b26debd952cb83693a724f3 MD5 · raw file
- //////////////////////////////////////////////////////////////////////////////
- //
- // (C) Copyright Ion Gaztanaga 2005-2009.
- //
- // 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)
- //
- // See http://www.boost.org/libs/container for documentation.
- //
- //////////////////////////////////////////////////////////////////////////////
- #ifndef BOOST_CONTAINERS_CONTAINER_DETAIL_MPL_HPP
- #define BOOST_CONTAINERS_CONTAINER_DETAIL_MPL_HPP
- #if (defined _MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif
- #include <cstddef>
- namespace boost {
- namespace container {
- namespace containers_detail {
- template <class T, T val>
- struct integral_constant
- {
- static const T value = val;
- typedef integral_constant<T,val> type;
- };
- template< bool C_ >
- struct bool_ : integral_constant<bool, C_>
- {
- static const bool value = C_;
- };
- typedef bool_<true> true_;
- typedef bool_<false> false_;
- typedef true_ true_type;
- typedef false_ false_type;
- typedef char yes_type;
- struct no_type
- {
- char padding[8];
- };
- 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 <class Cond, class T = void>
- struct disable_if : public enable_if_c<!Cond::value, T> {};
- template <class T, class U>
- class is_convertible
- {
- typedef char true_t;
- class false_t { char dummy[2]; };
- static true_t dispatch(U);
- static false_t dispatch(...);
- static T trigger();
- public:
- enum { value = sizeof(dispatch(trigger())) == sizeof(true_t) };
- };
- template<
- bool C
- , typename T1
- , typename T2
- >
- struct if_c
- {
- typedef T1 type;
- };
- template<
- typename T1
- , typename T2
- >
- struct if_c<false,T1,T2>
- {
- typedef T2 type;
- };
- template<
- typename T1
- , typename T2
- , typename T3
- >
- struct if_
- {
- typedef typename if_c<0 != T1::value, T2, T3>::type type;
- };
- template <class Pair>
- struct select1st
- // : public std::unary_function<Pair, typename Pair::first_type>
- {
- template<class OtherPair>
- const typename Pair::first_type& operator()(const OtherPair& x) const
- { return x.first; }
- const typename Pair::first_type& operator()(const typename Pair::first_type& x) const
- { return x; }
- };
- // identity is an extension: it is not part of the standard.
- template <class T>
- struct identity
- // : public std::unary_function<T,T>
- {
- typedef T type;
- const T& operator()(const T& x) const
- { return x; }
- };
- template<std::size_t S>
- struct ls_zeros
- {
- static const std::size_t value = (S & std::size_t(1)) ? 0 : (1u + ls_zeros<(S >> 1u)>::value);
- };
- template<>
- struct ls_zeros<0>
- {
- static const std::size_t value = 0;
- };
- template<>
- struct ls_zeros<1>
- {
- static const std::size_t value = 0;
- };
- } //namespace containers_detail {
- } //namespace container {
- } //namespace boost {
- #endif //#ifndef BOOST_CONTAINERS_CONTAINER_DETAIL_MPL_HPP