207 lines
8.0 KiB
C++
207 lines
8.0 KiB
C++
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/////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2006-2014
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// (C) Copyright Microsoft Corporation 2014
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/intrusive for documentation.
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//
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/////////////////////////////////////////////////////////////////////////////
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#ifndef BOOST_INTRUSIVE_DETAIL_MPL_HPP
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#define BOOST_INTRUSIVE_DETAIL_MPL_HPP
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#ifndef BOOST_CONFIG_HPP
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# include <boost/config.hpp>
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#endif
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#if defined(BOOST_HAS_PRAGMA_ONCE)
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# pragma once
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#endif
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#include <boost/intrusive/detail/config_begin.hpp>
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#include <boost/move/detail/type_traits.hpp>
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#include <cstddef>
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namespace boost {
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namespace intrusive {
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namespace detail {
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using boost::move_detail::is_same;
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using boost::move_detail::add_const;
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using boost::move_detail::remove_const;
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using boost::move_detail::remove_cv;
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using boost::move_detail::remove_reference;
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using boost::move_detail::add_reference;
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using boost::move_detail::remove_pointer;
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using boost::move_detail::add_pointer;
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using boost::move_detail::true_type;
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using boost::move_detail::false_type;
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using boost::move_detail::enable_if_c;
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using boost::move_detail::enable_if;
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using boost::move_detail::disable_if_c;
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using boost::move_detail::disable_if;
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using boost::move_detail::is_convertible;
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using boost::move_detail::if_c;
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using boost::move_detail::if_;
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using boost::move_detail::is_const;
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using boost::move_detail::identity;
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using boost::move_detail::alignment_of;
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using boost::move_detail::is_empty;
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using boost::move_detail::addressof;
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using boost::move_detail::integral_constant;
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using boost::move_detail::enable_if_convertible;
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using boost::move_detail::disable_if_convertible;
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using boost::move_detail::bool_;
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using boost::move_detail::true_;
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using boost::move_detail::false_;
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using boost::move_detail::yes_type;
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using boost::move_detail::no_type;
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using boost::move_detail::apply;
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using boost::move_detail::eval_if_c;
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using boost::move_detail::eval_if;
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using boost::move_detail::unvoid_ref;
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using boost::move_detail::add_const_if_c;
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template<std::size_t S>
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struct ls_zeros
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{
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static const std::size_t value = (S & std::size_t(1)) ? 0 : (1 + ls_zeros<(S>>1u)>::value);
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};
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template<>
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struct ls_zeros<0>
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{
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static const std::size_t value = 0;
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};
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template<>
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struct ls_zeros<1>
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{
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static const std::size_t value = 0;
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};
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// Infrastructure for providing a default type for T::TNAME if absent.
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#define BOOST_INTRUSIVE_INSTANTIATE_DEFAULT_TYPE_TMPLT(TNAME) \
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template <typename T, typename DefaultType> \
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struct boost_intrusive_default_type_ ## TNAME \
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{ \
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template <typename X> \
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static char test(int, typename X::TNAME*); \
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\
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template <typename X> \
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static int test(...); \
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\
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struct DefaultWrap { typedef DefaultType TNAME; }; \
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\
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static const bool value = (1 == sizeof(test<T>(0, 0))); \
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\
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typedef typename \
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::boost::intrusive::detail::if_c \
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<value, T, DefaultWrap>::type::TNAME type; \
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}; \
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//
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#define BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_DEFAULT(INSTANTIATION_NS_PREFIX, T, TNAME, TIMPL) \
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typename INSTANTIATION_NS_PREFIX \
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boost_intrusive_default_type_ ## TNAME< T, TIMPL >::type \
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//
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#define BOOST_INTRUSIVE_INSTANTIATE_EVAL_DEFAULT_TYPE_TMPLT(TNAME)\
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template <typename T, typename DefaultType> \
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struct boost_intrusive_eval_default_type_ ## TNAME \
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{ \
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template <typename X> \
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static char test(int, typename X::TNAME*); \
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\
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template <typename X> \
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static int test(...); \
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\
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struct DefaultWrap \
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{ typedef typename DefaultType::type TNAME; }; \
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\
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static const bool value = (1 == sizeof(test<T>(0, 0))); \
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\
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typedef typename \
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::boost::intrusive::detail::eval_if_c \
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< value \
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, ::boost::intrusive::detail::identity<T> \
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, ::boost::intrusive::detail::identity<DefaultWrap> \
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>::type::TNAME type; \
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}; \
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//
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#define BOOST_INTRUSIVE_OBTAIN_TYPE_WITH_EVAL_DEFAULT(INSTANTIATION_NS_PREFIX, T, TNAME, TIMPL) \
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typename INSTANTIATION_NS_PREFIX \
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boost_intrusive_eval_default_type_ ## TNAME< T, TIMPL >::type \
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//
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#define BOOST_INTRUSIVE_INTERNAL_STATIC_BOOL_IS_TRUE(TRAITS_PREFIX, TYPEDEF_TO_FIND) \
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template <class T>\
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struct TRAITS_PREFIX##_bool\
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{\
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template<bool Add>\
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struct two_or_three {yes_type _[2 + Add];};\
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template <class U> static yes_type test(...);\
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template <class U> static two_or_three<U::TYPEDEF_TO_FIND> test (int);\
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static const std::size_t value = sizeof(test<T>(0));\
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};\
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\
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template <class T>\
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struct TRAITS_PREFIX##_bool_is_true\
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{\
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static const bool value = TRAITS_PREFIX##_bool<T>::value > sizeof(yes_type)*2;\
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};\
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//
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#define BOOST_INTRUSIVE_HAS_STATIC_MEMBER_FUNC_SIGNATURE(TRAITS_NAME, FUNC_NAME) \
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template <typename U, typename Signature> \
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class TRAITS_NAME \
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{ \
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private: \
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template<Signature> struct helper;\
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template<typename T> \
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static ::boost::intrusive::detail::yes_type test(helper<&T::FUNC_NAME>*); \
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template<typename T> static ::boost::intrusive::detail::no_type test(...); \
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public: \
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static const bool value = sizeof(test<U>(0)) == sizeof(::boost::intrusive::detail::yes_type); \
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}; \
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//
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#define BOOST_INTRUSIVE_HAS_MEMBER_FUNC_CALLED(TRAITS_NAME, FUNC_NAME) \
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template <typename Type> \
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struct TRAITS_NAME \
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{ \
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struct BaseMixin \
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{ \
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void FUNC_NAME(); \
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}; \
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struct Base : public Type, public BaseMixin { Base(); }; \
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template <typename T, T t> class Helper{}; \
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template <typename U> \
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static ::boost::intrusive::detail::no_type test(U*, Helper<void (BaseMixin::*)(), &U::FUNC_NAME>* = 0); \
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static ::boost::intrusive::detail::yes_type test(...); \
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static const bool value = sizeof(::boost::intrusive::detail::yes_type) == sizeof(test((Base*)(0))); \
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};\
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//
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#define BOOST_INTRUSIVE_HAS_MEMBER_FUNC_CALLED_IGNORE_SIGNATURE(TRAITS_NAME, FUNC_NAME) \
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BOOST_INTRUSIVE_HAS_MEMBER_FUNC_CALLED(TRAITS_NAME##_ignore_signature, FUNC_NAME) \
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\
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template <typename Type, class> \
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struct TRAITS_NAME \
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: public TRAITS_NAME##_ignore_signature<Type> \
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{};\
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//
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} //namespace detail
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} //namespace intrusive
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} //namespace boost
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#include <boost/intrusive/detail/config_end.hpp>
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#endif //BOOST_INTRUSIVE_DETAIL_MPL_HPP
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