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NAME

       ost::LinkedDouble - Self managed double linked list object chain.

SYNOPSIS

       #include <object.h>

   Public Types
       enum InsertMode { modeAtFirst, modeAtLast, modeBefore, modeAfter }
           Requested in overloaded insert() method to indicate how to insert data into list.

   Public Member Functions
       virtual LinkedDouble * getFirst (void)
           Get first linked object in list.
       virtual LinkedDouble * getLast (void)
           Gets the last object in the list.
       virtual LinkedDouble * getInsert (void)
           Virtual to get the insert point to use when adding new members.
       LinkedDouble * getNext (void)
           Get next object, for convenience.
       LinkedDouble * getPrev (void)
           Get prev object in the list.
       virtual void insert (LinkedDouble &obj, InsertMode position=modeAtLast)
           Insert object into chain at given position, as indicated by InsertMode; If no position
           is given, it defaults to modeAtLast, inserting element at list's end.
       virtual void detach (void)
           Remove object from chain.
       LinkedDouble & operator+= (LinkedDouble &obj)
       LinkedDouble & operator-- ()

   Protected Member Functions
       LinkedDouble ()
       virtual ~LinkedDouble ()
       virtual void enterLock (void)
       virtual void leaveLock (void)
       virtual LinkedDouble * firstObject ()
       virtual LinkedDouble * lastObject ()

   Protected Attributes
       LinkedDouble * nextObject
       LinkedDouble * prevObject

Detailed Description

       Self managed double linked list object chain.

       This is used for accumulating lists by using as a base class for a derived subclass.

       Author
           David Sugar dyfet@gnutelephony.org

       Accumulating double linked list.

Member Enumeration Documentation

   enum ost::LinkedDouble::InsertMode
       Requested in overloaded insert() method to indicate how to insert data into list.

       Enumerator

       modeAtFirst
              insert at first position in list pointed by current object

       modeAtLast
              insert at last position in list pointed by current object

       modeBefore
              insert in list before current object

       modeAfter
              insert in list after current object

Constructor & Destructor Documentation

   ost::LinkedDouble::LinkedDouble () [inline],  [protected]
   virtual ost::LinkedDouble::~LinkedDouble () [protected],  [virtual]

Member Function Documentation

   virtual void ost::LinkedDouble::detach (void) [virtual]
       Remove object from chain.

   virtual void ost::LinkedDouble::enterLock (void) [protected],  [virtual]
   virtual LinkedDouble* ost::LinkedDouble::firstObject () [protected],  [virtual]
   virtual LinkedDouble* ost::LinkedDouble::getFirst (void) [virtual]
       Get first linked object in list. This may be dynamically recast, and may refer to a master
       static bookmark pointer in a derived class. Otherwise it follows list to front.

       Returns
           pointer to first object in list.

   virtual LinkedDouble* ost::LinkedDouble::getInsert (void) [virtual]
       Virtual to get the insert point to use when adding new members. This may be current, or
       always head or always tail. As a virtual, this allows derived class to establish 'policy'.

       Returns
           pointer to insertion point in list.

   virtual LinkedDouble* ost::LinkedDouble::getLast (void) [virtual]
       Gets the last object in the list. This normally follows the links to the end. This is a
       virtual because derived class may include a static member bookmark for the current end.

       Returns
           pointer to last object in list.

   LinkedDouble* ost::LinkedDouble::getNext (void) [inline]
       Get next object, for convenience. Derived class may use this with a dynamic cast.

       Returns
           next object in list.

   LinkedDouble* ost::LinkedDouble::getPrev (void) [inline]
       Get prev object in the list.

       Returns
           pointer to previous object.

   virtual void ost::LinkedDouble::insert (LinkedDouble & obj, InsertMode position = modeAtLast)
       [virtual]
       Insert object into chain at given position, as indicated by InsertMode; If no position is
       given, it defaults to modeAtLast, inserting element at list's end.

       Parameters
           object being inserted.
           position where object is inserted.

   virtual LinkedDouble* ost::LinkedDouble::lastObject () [protected],  [virtual]
   virtual void ost::LinkedDouble::leaveLock (void) [protected],  [virtual]
   LinkedDouble& ost::LinkedDouble::operator+= (LinkedDouble & obj)
   LinkedDouble& ost::LinkedDouble::operator-- ()

Member Data Documentation

   LinkedDouble* ost::LinkedDouble::nextObject [protected]
   LinkedDouble * ost::LinkedDouble::prevObject [protected]

Author

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