objpointer.hh

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#ifndef DUNE_FEM_OBJPOINTER_HH
#define DUNE_FEM_OBJPOINTER_HH
 
namespace Dune
{
 
  namespace Fem
  {
 
    template <class ObjType>
    struct ObjPointer
    {
      typedef ObjPointer<ObjType> ObjPointerType;
      ObjType * item;
      ObjPointerType *next;
 
      ObjPointer () : item (0) , next (0) {}
 
      ObjPointer (ObjType  *t) : item (t) , next (0) {}
 
      virtual ~ObjPointer ()
      {
        if(next)
          delete next;
        next = 0;
        if(item)
          delete item;
        item = 0;
      }
    };
 
    class ObjPointerStorage
    {
      typedef ObjPointerStorage MyType;
    public:
      ObjPointerStorage () : item_ (0) {}
 
      virtual ~ObjPointerStorage ()
      {
        if(item_)
          delete item_;
        item_ = 0;
      }
 
      template <class DiscrOpType>
      void saveObjPointer ( DiscrOpType * discrOp )
      {
        ObjPointerType *next = new ObjPointerType ( discrOp );
        next->next = item_;
        item_ = next;
      }
 
      template <class DiscrOpType, class LocalOpType >
      void saveObjPointer ( DiscrOpType * discrOp , LocalOpType * lop )
      {
        saveObjPointer( discrOp );
        saveObjPointer( lop     );
      }
 
    private:
      // store the objects created by operator + in here
      typedef ObjPointer<MyType> ObjPointerType;
      ObjPointerType * item_;
 
    };
 
  } // namespace Fem
 
} // namespace Dune
 
#endif // #ifndef DUNE_FEM_OBJPOINTER_HH