//
// Copyright (c) 2001, 2002 Peter Dimov
//
-// Permission to copy, use, modify, sell and distribute this software
-// is granted provided this copyright notice appears in all copies.
-// This software is provided "as is" without express or implied
-// warranty, and with no claim as to its suitability for any purpose.
+// 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/smart_ptr/intrusive_ptr.html for documentation.
//
-#include <boost/config.hpp>
-
-#ifdef BOOST_MSVC // moved here to work around VC++ compiler crash
-# pragma warning(push)
-# pragma warning(disable:4284) // odd return type for operator->
-#endif
-
-#include <boost/assert.hpp>
-#include <boost/detail/workaround.hpp>
-
-#include <functional> // for std::less
-#include <iosfwd> // for std::basic_ostream
-
-
-namespace boost
-{
-
-//
-// intrusive_ptr
-//
-// A smart pointer that uses intrusive reference counting.
-//
-// Relies on unqualified calls to
-//
-// void intrusive_ptr_add_ref(T * p);
-// void intrusive_ptr_release(T * p);
-//
-// (p != 0)
-//
-// The object is responsible for destroying itself.
-//
-
-template<class T> class intrusive_ptr
-{
-private:
-
- typedef intrusive_ptr this_type;
-
-public:
-
- typedef T element_type;
-
- intrusive_ptr(): p_(0)
- {
- }
-
- intrusive_ptr(T * p, bool add_ref = true): p_(p)
- {
- if(p_ != 0 && add_ref) intrusive_ptr_add_ref(p_);
- }
-
-#if !defined(BOOST_NO_MEMBER_TEMPLATES) || defined(BOOST_MSVC6_MEMBER_TEMPLATES)
-
- template<class U> intrusive_ptr(intrusive_ptr<U> const & rhs): p_(rhs.get())
- {
- if(p_ != 0) intrusive_ptr_add_ref(p_);
- }
-
-#endif
-
- intrusive_ptr(intrusive_ptr const & rhs): p_(rhs.p_)
- {
- if(p_ != 0) intrusive_ptr_add_ref(p_);
- }
-
- ~intrusive_ptr()
- {
- if(p_ != 0) intrusive_ptr_release(p_);
- }
-
-#if !defined(BOOST_NO_MEMBER_TEMPLATES) || defined(BOOST_MSVC6_MEMBER_TEMPLATES)
-
- template<class U> intrusive_ptr & operator=(intrusive_ptr<U> const & rhs)
- {
- this_type(rhs).swap(*this);
- return *this;
- }
-
-#endif
-
- intrusive_ptr & operator=(intrusive_ptr const & rhs)
- {
- this_type(rhs).swap(*this);
- return *this;
- }
-
- intrusive_ptr & operator=(T * rhs)
- {
- this_type(rhs).swap(*this);
- return *this;
- }
-
- T * get() const
- {
- return p_;
- }
-
- T & operator*() const
- {
- return *p_;
- }
-
- T * operator->() const
- {
- return p_;
- }
-
-#if defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x530)
-
- operator bool () const
- {
- return p_ != 0;
- }
-
-#elif defined(__MWERKS__) && BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003))
- typedef T * (this_type::*unspecified_bool_type)() const;
-
- operator unspecified_bool_type() const // never throws
- {
- return p_ == 0? 0: &this_type::get;
- }
-
-#else
-
- typedef T * this_type::*unspecified_bool_type;
-
- operator unspecified_bool_type () const
- {
- return p_ == 0? 0: &this_type::p_;
- }
-
-#endif
-
- // operator! is a Borland-specific workaround
- bool operator! () const
- {
- return p_ == 0;
- }
-
- void swap(intrusive_ptr & rhs)
- {
- T * tmp = p_;
- p_ = rhs.p_;
- rhs.p_ = tmp;
- }
-
-private:
-
- T * p_;
-};
-
-template<class T, class U> inline bool operator==(intrusive_ptr<T> const & a, intrusive_ptr<U> const & b)
-{
- return a.get() == b.get();
-}
-
-template<class T, class U> inline bool operator!=(intrusive_ptr<T> const & a, intrusive_ptr<U> const & b)
-{
- return a.get() != b.get();
-}
-
-template<class T> inline bool operator==(intrusive_ptr<T> const & a, T * b)
-{
- return a.get() == b;
-}
-
-template<class T> inline bool operator!=(intrusive_ptr<T> const & a, T * b)
-{
- return a.get() != b;
-}
-
-template<class T> inline bool operator==(T * a, intrusive_ptr<T> const & b)
-{
- return a == b.get();
-}
-
-template<class T> inline bool operator!=(T * a, intrusive_ptr<T> const & b)
-{
- return a != b.get();
-}
-
-#if __GNUC__ == 2 && __GNUC_MINOR__ <= 96
-
-// Resolve the ambiguity between our op!= and the one in rel_ops
-
-template<class T> inline bool operator!=(intrusive_ptr<T> const & a, intrusive_ptr<T> const & b)
-{
- return a.get() != b.get();
-}
-
-#endif
-
-template<class T> inline bool operator<(intrusive_ptr<T> const & a, intrusive_ptr<T> const & b)
-{
- return std::less<T *>()(a.get(), b.get());
-}
-
-template<class T> void swap(intrusive_ptr<T> & lhs, intrusive_ptr<T> & rhs)
-{
- lhs.swap(rhs);
-}
-
-// mem_fn support
-
-template<class T> T * get_pointer(intrusive_ptr<T> const & p)
-{
- return p.get();
-}
-
-template<class T, class U> intrusive_ptr<T> static_pointer_cast(intrusive_ptr<U> const & p)
-{
- return static_cast<T *>(p.get());
-}
-
-template<class T, class U> intrusive_ptr<T> const_pointer_cast(intrusive_ptr<U> const & p)
-{
- return const_cast<T *>(p.get());
-}
-
-template<class T, class U> intrusive_ptr<T> dynamic_pointer_cast(intrusive_ptr<U> const & p)
-{
- return dynamic_cast<T *>(p.get());
-}
-
-// operator<<
-
-#if defined(__GNUC__) && (__GNUC__ < 3)
-
-template<class Y> std::ostream & operator<< (std::ostream & os, intrusive_ptr<Y> const & p)
-{
- os << p.get();
- return os;
-}
-
-#else
-
-# if defined(BOOST_MSVC) && BOOST_WORKAROUND(BOOST_MSVC, <= 1200 && __SGI_STL_PORT)
-// MSVC6 has problems finding std::basic_ostream through the using declaration in namespace _STL
-using std::basic_ostream;
-template<class E, class T, class Y> basic_ostream<E, T> & operator<< (basic_ostream<E, T> & os, intrusive_ptr<Y> const & p)
-# else
-template<class E, class T, class Y> std::basic_ostream<E, T> & operator<< (std::basic_ostream<E, T> & os, intrusive_ptr<Y> const & p)
-# endif
-{
- os << p.get();
- return os;
-}
-
-#endif
-
-} // namespace boost
-
-#ifdef BOOST_MSVC
-# pragma warning(pop)
-#endif
+#include <boost/smart_ptr/intrusive_ptr.hpp>
#endif // #ifndef BOOST_INTRUSIVE_PTR_HPP_INCLUDED
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