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+// This may look like C, but it's really -*- C++ -*-
+// $Id$
+/*
+
+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
+Definition Language CFE without charge, but you are not authorized to
+license or distribute it to anyone else except as part of a product or
+program developed by you or with the express written consent of Sun
+Microsystems, Inc. ("Sun").
+
+The names of Sun Microsystems, Inc. and any of its subsidiaries or
+affiliates may not be used in advertising or publicity pertaining to
+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
+FOR A PARTICULAR PURPOSE, NONINFRINGEMENT, OR ARISING FROM A COURSE OF
+DEALING, USAGE OR TRADE PRACTICE.
+
+INTERFACE DEFINITION LANGUAGE CFE IS PROVIDED WITH NO SUPPORT AND WITHOUT
+ANY OBLIGATION ON THE PART OF Sun OR ANY OF ITS SUBSIDIARIES OR AFFILIATES
+TO ASSIST IN ITS USE, CORRECTION, MODIFICATION OR ENHANCEMENT.
+
+SUN OR ANY OF ITS SUBSIDIARIES OR AFFILIATES SHALL HAVE NO LIABILITY WITH
+RESPECT TO THE INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY
+INTERFACE DEFINITION LANGUAGE CFE OR ANY PART THEREOF.
+
+IN NO EVENT WILL SUN OR ANY OF ITS SUBSIDIARIES OR AFFILIATES BE LIABLE FOR
+ANY LOST REVENUE OR PROFITS OR OTHER SPECIAL, INDIRECT AND CONSEQUENTIAL
+DAMAGES, EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+Use, duplication, or disclosure by the government is subject to
+restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in
+Technical Data and Computer Software clause at DFARS 252.227-7013 and FAR
+52.227-19.
+
+Sun, Sun Microsystems and the Sun logo are trademarks or registered
+trademarks of Sun Microsystems, Inc.
+
+SunSoft, Inc.
+2550 Garcia Avenue
+Mountain View, California  94043
+
+NOTE:
+
+SunOS, SunSoft, Sun, Solaris, Sun Microsystems or the Sun logo are
+trademarks or registered trademarks of Sun Microsystems, Inc.
+
+*/
+
+#ifndef _AST_TYPEDEF_AST_TYPEDEF_HH
+#define _AST_TYPEDEF_AST_TYPEDEF_HH
+
+#include "ast_type.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:
+  // Operations.
+
+  // Constructor(s) and destructor.
+  AST_Typedef (void);
+
+  AST_Typedef (AST_Type *base_type,
+               UTL_ScopedName *n,
+               bool local,
+               bool abstract);
+
+  virtual ~AST_Typedef (void);
+
+  AST_Type *primitive_base_type (void) const;
+  // Return the most primitive base type by traversing the chain of typedefed
+  // base types.
+
+  // Data Accessors.
+  AST_Type *base_type (void) const;
+
+  virtual bool legal_for_primary_key (void) 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 (void);
+  // Override the base class method.
+
+  void owns_base_type (bool val);
+  // Sometimes this has to be managed from outside.
+
+  // Narrowing.
+  DEF_NARROW_METHODS1(AST_Typedef, AST_Type);
+  DEF_NARROW_FROM_DECL(AST_Typedef);
+
+  // AST Dumping.
+  virtual void dump (ACE_OSTREAM_TYPE &o);
+
+  // Visiting.
+  virtual int ast_accept (ast_visitor *visitor);
+
+  // Cleanup.
+  virtual void destroy (void);
+
+protected:
+  virtual int compute_size_type (void);
+  // Compute the size type if it is unknown.
+
+private:
+  // Data.
+
+  AST_Type *pd_base_type;
+  // Typedef base type.
+
+  bool owns_base_type_;
+  // If our base type is anonymous array or sequence, we're
+  // responsible for destroying it.
+};
+
+#endif           // _AST_TYPEDEF_AST_TYPEDEF_HH