// ast_union_branch.cpp,v 1.19 2006/06/15 18:56:09 parsons Exp

/*

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*/

// AST_UnionBranch nodes represent a single branch of an IDL union
// declaration.
// AST_UnionBranch is a subclass of AST_Field, adding a label (which
// is a subclass of AST_UnionLabel).

#include "ast_union_branch.h"
#include "ast_union_label.h"
#include "ast_union.h"
#include "ast_visitor.h"
#include "utl_labellist.h"

ACE_RCSID(ast, ast_union_branch, "ast_union_branch.cpp,v 1.19 2006/06/15 18:56:09 parsons Exp")

AST_UnionBranch::AST_UnionBranch (void)
  : COMMON_Base (),
    AST_Decl (),
	  AST_Field (),
	  pd_ll (0)
{
}

AST_UnionBranch::AST_UnionBranch (UTL_LabelList *ll,
                                  AST_Type *ft,
				                          UTL_ScopedName *n)
  : COMMON_Base (),
    AST_Decl (AST_Decl::NT_union_branch,
              n),
	  AST_Field (AST_Decl::NT_union_branch,
               ft,
               n),
	  pd_ll (ll)
{
}

AST_UnionBranch::~AST_UnionBranch (void)
{
}

// Redefinition of inherited virtual operations.

// Dump this AST_UnionBranch node to the ostream o.
void
AST_UnionBranch::dump (ACE_OSTREAM_TYPE &o)
{
  for (unsigned long i = 0; i < this->label_list_length (); ++i)
    {
      this->dump_i (o, "case ");

      AST_UnionLabel *ul = this->label (i);
      ul->dump (o);

      this->dump_i (o, ": \n");
    }

  AST_Field::dump (o);
}

int
AST_UnionBranch::ast_accept (ast_visitor *visitor)
{
  return visitor->visit_union_branch (this);
}

void
AST_UnionBranch::destroy (void)
{
  this->pd_ll->destroy ();
  delete this->pd_ll;
  this->pd_ll = 0;
  
  this->AST_Field::destroy ();
}

// Data accessors.

AST_UnionLabel *
AST_UnionBranch::label (unsigned long index)
{
  unsigned long i = 0;

  for (UTL_LabellistActiveIterator iter (this->pd_ll); 
       !iter.is_done (); 
       iter.next ())
    {
      if (i == index)
        {
          return iter.item ();
        }

      ++i;
    }

  return 0;
}

unsigned long
AST_UnionBranch::label_list_length (void)
{
  if (this->pd_ll)
    {
      return this->pd_ll->length ();
    }
  else
    {
      return 0;
    }
}

void
AST_UnionBranch::add_labels (AST_Union *u)
{
  AST_UnionLabel *ul = 0;
  AST_Expression *ex = 0;

  for (UTL_LabellistActiveIterator i (this->pd_ll);
       !i.is_done ();
       i.next ())
    {
      ul = i.item ();
      
      if (ul->label_kind () == AST_UnionLabel::UL_default)
        {
          return;
        }
        
      ex = ul->label_val ();
      u->add_to_name_referenced (ex->n ()->first_component ());
    }
}

// Narrowing.
IMPL_NARROW_METHODS1(AST_UnionBranch, AST_Field)
IMPL_NARROW_FROM_DECL(AST_UnionBranch)
