/*

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 */

// utl_labellist.cc
//
// Implementation of a list of scoped names

// NOTE: This list class only works correctly because we use single public
//       inheritance, as opposed to multiple inheritance or public virtual.
//	 It relies on a type-unsafe cast from UTL_List to subclasses, which
//	 will cease to operate correctly if you use either multiple or
//	 public virtual inheritance.
//
//	 For portability reasons we have decided to provide both this and
//	 an implementation of the list classes in terms of templates. If
//	 your compiler supports templates, please use the files in the
//	 include/utl_tmpl and util/utl_tmpl directories instead of the
//	 files by the same names in the include and util directories.

#include	<idl.hh>
#include	<idl_extern.hh>

/*
 * Constructor(s)
 */

UTL_LabelList::UTL_LabelList(AST_UnionLabel *s, UTL_LabelList *cdr)
	     : UTL_List(cdr),
               pd_car_data(s)
{
}

/*
 * Private operations
 */

/*
 * Public operations
 */

// Get list item
AST_UnionLabel *
UTL_LabelList::head()
{
  return pd_car_data;
}

/*
 * Redefinition of inherited virtual operations
 */

// UTL_LabelList active iterator

/*
 * Constructor
 */

UTL_LabellistActiveIterator::UTL_LabellistActiveIterator(UTL_LabelList *s)
			   : UTL_ListActiveIterator(s)
{
}

/*
 * Private operations
 */

/*
 * Public operations
 */

// Get current item
AST_UnionLabel *
UTL_LabellistActiveIterator::item()
{
  if (source == NULL)
    return NULL;
  return ((UTL_LabelList *) source)->head();
}

/*
 * Redefinition of inherited virtual operations
 */
