// This may look like C, but it's really -*- C++ -*-
/*

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*/

#ifndef _AST_UNION_BRANCH_AST_UNION_BRAN_HH
#define _AST_UNION_BRANCH_AST_UNION_BRAN_HH

#include "ast_field.h"
#include "utl_scoped_name.h"

class UTL_LabelList;
class AST_Type;
class AST_UnionLabel;
class AST_Union;

// Representation of union branch declaration.
// A branch of a union is a field with a label.

class TAO_IDL_FE_Export AST_UnionBranch : public virtual AST_Field
{
public:
  AST_UnionBranch (UTL_LabelList *ll,
                   AST_Type *ft,
                   UTL_ScopedName *n);

  virtual ~AST_UnionBranch (void);

  UTL_LabelList *labels (void) const;

  AST_UnionLabel *label (unsigned long index = 0);

  unsigned long label_list_length (void);

  // Called if our labels are enum values - adds them to the
  // enclosing scope's name_referenced list.
  void add_labels (AST_Union *u);

  // Integer literals create a ulonglong AST_Expression. If
  // our union's discriminator type is some other kind of
  // integer, and we have more than one label, only the first
  // one gets coerced in the lookup for add of the branch. So
  // we call this at the end of fe_add_union_branch.
  void coerce_labels (AST_Union *u);

  // Narrowing.

  DEF_NARROW_FROM_DECL (AST_UnionBranch);

  // AST Dumping.
  virtual void dump (ACE_OSTREAM_TYPE &o);

  // Visiting.
  virtual int ast_accept (ast_visitor *visitor);

  // Cleanup.
  virtual void destroy (void);

  static AST_Decl::NodeType const NT;

private:
  // list of labels.
  UTL_LabelList *pd_ll;
};

#endif           // _AST_UNION_BRANCH_AST_UNION_BRAN_HH
