TAO/TAO_IDL/util/utl_exceptlist.cpp

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  64
  65 // utl_exceptlist.cc
  66 //
  67 // Implementation of a list of exceptions
  68
  69 // NOTE: This list class only works correctly because we use single public
  70 //       inheritance, as opposed to multiple inheritance or public virtual.
  71 //       It relies on a type-unsafe cast from UTL_List to subclasses, which
  72 //       will cease to operate correctly if you use either multiple or
  73 //       public virtual inheritance.
  74
  75 #include "utl_exceptlist.h"
  76
  77 #include "ace/OS_Memory.h"
  78
  79 UTL_ExceptList::UTL_ExceptList (AST_Type *s,
  80                                 UTL_ExceptList *cdr)
  81   : UTL_List (cdr),
  82     pd_car_data (s)
  83 {
  84 }
  85
  86 // Get list item.
  87 AST_Type *
  88 UTL_ExceptList::head ()
  89 {
  90   return this->pd_car_data;
  91 }
  92
  93 // The two methods below make direct calls on the
  94 // cdr list (we have been made a friend of the base
  95 // class UTL_List's private member). This is so we
  96 // can avoid copying the contained quantity, an
  97 // AST_Exception.
  98 void
  99 UTL_ExceptList::destroy ()
 100 {
 101   if (this->tail () != nullptr)
 102     {
 103       this->tail ()->destroy ();
 104     }
 105
 106   delete this;
 107 }
 108
 109 UTL_ExceptList *
 110 UTL_ExceptList::copy ()
 111 {
 112   UTL_ExceptList *retval = nullptr;
 113   ACE_NEW_RETURN (retval,
 114                   UTL_ExceptList (this->pd_car_data,
 115                                   nullptr),
 116                   nullptr);
 117
 118   if (this->tail () != nullptr)
 119     {
 120       retval->nconc ((UTL_ExceptList *) this->tail ()->copy ());
 121     }
 122
 123   return retval;
 124 }
 125
 126 UTL_ExceptlistActiveIterator::UTL_ExceptlistActiveIterator (UTL_ExceptList *s)
 127   : UTL_ListActiveIterator(s)
 128 {
 129 }
 130
 131 // Get current item.
 132 AST_Type *
 133 UTL_ExceptlistActiveIterator::item ()
 134 {
 135   if (source == nullptr)
 136     {
 137       return nullptr;
 138     }
 139
 140   return ((UTL_ExceptList *) source)->head ();
 141 }
 142