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

COPYRIGHT

Copyright 1992, 1993, 1994 Sun Microsystems, Inc.  Printed in the United
States of America.  All Rights Reserved.

This product is protected by copyright and distributed under the following
license restricting its use.

The Interface Definition Language Compiler Front End (CFE) is made
available for your use provided that you include this license and copyright
notice on all media and documentation and the software program in which
this product is incorporated in whole or part. You may copy and extend
functionality (but may not remove functionality) of the Interface
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distribution of Interface Definition Language CFE as permitted herein.

This license is effective until terminated by Sun for failure to comply
with this license.  Upon termination, you shall destroy or return all code
and documentation for the Interface Definition Language CFE.

INTERFACE DEFINITION LANGUAGE CFE IS PROVIDED AS IS WITH NO WARRANTIES OF
ANY KIND INCLUDING THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS
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*/

#ifndef _AST_TYPEDEF_AST_TYPEDEF_HH
#define _AST_TYPEDEF_AST_TYPEDEF_HH

#include "ast_type.h"
#include "ast_field.h"

// Representation of typedef declaration.
// A typedef declaration is a renaming of a base type.

class TAO_IDL_FE_Export AST_Typedef : public virtual AST_Type,
                                      public virtual AST_Field
{
public:
  AST_Typedef (AST_Type *base_type,
               UTL_ScopedName *n,
               bool local,
               bool abstract);

  virtual ~AST_Typedef ();

  AST_Type *primitive_base_type () const;
  // Return the most primitive base type by traversing the chain of typedefed
  // base types.

  // Data Accessors.
  AST_Type *base_type () const;

  virtual bool legal_for_primary_key () const;
  // Recursively called on valuetype to check for legal use as
  // a primary key. Overridden for valuetype, struct, sequence,
  // union, array, typedef, and interface.

  virtual bool is_local ();
  // Override the base class method.

  bool owns_base_type () const;
  void owns_base_type (bool val);
  // Sometimes this has to be accessed or managed from outside.

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

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

  // Cleanup.
  virtual void destroy ();

  static AST_Decl::NodeType const NT;

  virtual bool dump_annotations_inline () const { return true; }

  /**
   * Recursively acquired annotations from typedefs.
   */
  virtual AST_Annotation_Appls &annotations ();

protected:
  virtual int compute_size_type ();
  // Compute the size type if it is unknown.

  /**
   * Cache of Recursively acquired annotations from typedefs.
   */
  ///{
  AST_Annotation_Appls cached_annotations_;
  bool has_cached_annotations_;
  ///}
};

#endif           // _AST_TYPEDEF_AST_TYPEDEF_HH