123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384 |
- // (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
- // Use, modification and distribution are 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).
- //
- // See http://www.boost.org/libs/type_traits for most recent version including documentation.
- #ifndef BOOST_TT_REMOVE_POINTER_HPP_INCLUDED
- #define BOOST_TT_REMOVE_POINTER_HPP_INCLUDED
- #include <boost/config.hpp>
- #include <boost/config/workaround.hpp>
- #if defined(BOOST_MSVC)
- #include <boost/type_traits/remove_cv.hpp>
- #include <boost/type_traits/is_pointer.hpp>
- #endif
- namespace boost {
- #if BOOST_WORKAROUND(BOOST_MSVC, < 1900)
- namespace detail{
- //
- // We need all this crazy indirection because a type such as:
- //
- // T (*const)(U)
- //
- // Does not bind to a <T*> or <T*const> partial specialization with VC10 and earlier
- //
- template <class T>
- struct remove_pointer_imp
- {
- typedef T type;
- };
- template <class T>
- struct remove_pointer_imp<T*>
- {
- typedef T type;
- };
- template <class T, bool b>
- struct remove_pointer_imp3
- {
- typedef typename remove_pointer_imp<typename boost::remove_cv<T>::type>::type type;
- };
- template <class T>
- struct remove_pointer_imp3<T, false>
- {
- typedef T type;
- };
- template <class T>
- struct remove_pointer_imp2
- {
- typedef typename remove_pointer_imp3<T, ::boost::is_pointer<T>::value>::type type;
- };
- }
- template <class T> struct remove_pointer{ typedef typename boost::detail::remove_pointer_imp2<T>::type type; };
- #else
- template <class T> struct remove_pointer{ typedef T type; };
- template <class T> struct remove_pointer<T*>{ typedef T type; };
- template <class T> struct remove_pointer<T*const>{ typedef T type; };
- template <class T> struct remove_pointer<T*volatile>{ typedef T type; };
- template <class T> struct remove_pointer<T*const volatile>{ typedef T type; };
- #endif
- #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
- template <class T> using remove_pointer_t = typename remove_pointer<T>::type;
- #endif
- } // namespace boost
- #endif // BOOST_TT_REMOVE_POINTER_HPP_INCLUDED
|