text: // Copyright (c) 2014 Baidu.com, Inc. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  // This file is modified from boost.
  //
  // Copyright Beman Dawes 2002, 2006
  // 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 library home page at http://www.boost.org/libs/system
  
  #ifndef _SOFA_PBRPC_SMART_PTR_SCOPED_PTR_
  #define _SOFA_PBRPC_SMART_PTR_SCOPED_PTR_
  
  #include <sofa/pbrpc/smart_ptr/checked_delete.hpp>
  
  namespace sofa {
  namespace pbrpc {
  
  //  scoped_ptr mimics a built-in pointer except that it guarantees deletion
  //  of the object pointed to, either on destruction of the scoped_ptr or via
  //  an explicit reset(). scoped_ptr is a simple solution for simple needs;
  //  use shared_ptr or std::auto_ptr if your needs are more complex.
  
  template<class T> class scoped_ptr // noncopyable
  {
  private:
  
      T * px;
  
      scoped_ptr(scoped_ptr const &);
      scoped_ptr & operator=(scoped_ptr const &);
  
      typedef scoped_ptr<T> this_type;
  
      void operator==( scoped_ptr const& ) const;
      void operator!=( scoped_ptr const& ) const;
  
  public:
  
      typedef T element_type;
  
      explicit scoped_ptr( T * p = 0 ): px( p ) // never throws
      {
      }
  
      ~scoped_ptr() // never throws
      {
          sofa::pbrpc::checked_delete( px );
      }
  
      void reset(T * p = 0) // never throws
      {
          this_type(p).swap(*this);
      }
  
      T & operator*() const // never throws
      {
          return *px;
      }
  
      T * operator->() const // never throws
      {
          return px;
      }
  
      T * get() const // never throws
      {
          return px;
      }
  
  // implicit conversion to "bool"
  #include <sofa/pbrpc/smart_ptr/detail/operator_bool.hpp>
  
      void swap(scoped_ptr & b) // never throws
      {
          T * tmp = b.px;
          b.px = px;
          px = tmp;
      }
  };
  
  template<class T> inline void swap(scoped_ptr<T> & a, scoped_ptr<T> & b) // never throws
  {
      a.swap(b);
  }
  
  // get_pointer(p) is a generic way to say p.get()
  
  template<class T> inline T * get_pointer(scoped_ptr<T> const & p)
  {
      return p.get();
  }
  
  } // namespace pbrpc
  } // namespace sofa
  
  #endif // _SOFA_PBRPC_SMART_PTR_SCOPED_PTR_
  
  /* vim: set ts=4 sw=4 sts=4 tw=100 */
  