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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_MODULE_AST_MODULE_HH
+#define _AST_MODULE_AST_MODULE_HH
+
+#include "ast_decl.h"
+#include "utl_scope.h"
+#include "ace/Unbounded_Set.h"
+
+// Representation of module.
+//
+// NOTE: add(AST_EnumValue *) is defined here because enums can
+// be defined manifest locally; the constants defined in these
+// enums are inserted in the enclosing scope.
+
+class TAO_IDL_FE_Export AST_Module : public virtual AST_Decl,
+                                     public virtual UTL_Scope
+{
+public:
+  // Operations.
+
+  // Constructor(s) and destructor.
+  AST_Module (void);
+
+  AST_Module (UTL_ScopedName *n);
+
+  virtual ~AST_Module (void);
+
+  // Narrowing.
+  DEF_NARROW_METHODS2(AST_Module, AST_Decl, UTL_Scope);
+  DEF_NARROW_FROM_DECL(AST_Module);
+  DEF_NARROW_FROM_SCOPE(AST_Module);
+
+  // AST Dumping.
+  virtual void dump (ACE_OSTREAM_TYPE &o);
+
+  // Involved in OBV_ namespace generation.
+  void set_has_nested_valuetype (void);
+  bool has_nested_valuetype (void);
+
+  // Allows adding an interface to a later point
+  // The interface i is inserted after interface ix, if
+  // ix is not null.
+  int be_add_interface (AST_Interface *i,
+                        AST_Interface *ix = 0);
+
+  // Has this node been referenced here already?
+  // Override of method in UTL_Scope.
+  virtual bool referenced (AST_Decl *e,
+                               Identifier *id = 0);
+
+  // Add decls from previous opening of this module to the
+  // 'previous' set of this module, along with the argument's
+  // own 'previous' set.
+  void add_to_previous (AST_Module *m);
+
+  // Called by lookup_by_name_local, to check for declaration
+  // in a previous opening of this module.
+  virtual AST_Decl *look_in_previous (Identifier *e, bool ignore_fwd = false);
+
+  // Accessor to the member.
+  ACE_Unbounded_Set<AST_Decl *> &previous (void);
+
+  // Cleanup function.
+  virtual void destroy (void);
+
+  // Visiting.
+  virtual int ast_accept (ast_visitor *visitor);
+
+private:
+  friend void fe_populate_global_scope (AST_Module *m);
+  friend int tao_yyparse (void);
+
+  // Scope Management Protocol
+
+  virtual AST_PredefinedType *fe_add_predefined_type (AST_PredefinedType *t);
+
+  virtual AST_Module *fe_add_module (AST_Module *m);
+
+  virtual AST_Interface *fe_add_interface (AST_Interface *i);
+
+  virtual AST_InterfaceFwd *fe_add_interface_fwd (AST_InterfaceFwd *i);
+
+  virtual AST_ValueType *fe_add_valuetype (AST_ValueType *i);
+
+  virtual AST_ValueTypeFwd *fe_add_valuetype_fwd (AST_ValueTypeFwd *i);
+
+  virtual AST_EventType *fe_add_eventtype (AST_EventType *i);
+
+  virtual AST_EventTypeFwd *fe_add_eventtype_fwd (AST_EventTypeFwd *i);
+
+  virtual AST_Component *fe_add_component (AST_Component *i);
+
+  virtual AST_ComponentFwd *fe_add_component_fwd (AST_ComponentFwd *i);
+
+  virtual AST_Home *fe_add_home (AST_Home *i);
+
+  virtual AST_Constant *fe_add_constant (AST_Constant *c);
+
+  virtual AST_Exception *fe_add_exception (AST_Exception *e);
+
+  virtual AST_Union *fe_add_union (AST_Union *u);
+
+  virtual AST_UnionFwd *fe_add_union_fwd (AST_UnionFwd *u);
+
+  virtual AST_Structure *fe_add_structure (AST_Structure *s);
+
+  virtual AST_StructureFwd *fe_add_structure_fwd (AST_StructureFwd *s);
+
+  virtual AST_Enum *fe_add_enum (AST_Enum *e);
+
+  virtual AST_EnumVal *fe_add_enum_val (AST_EnumVal *v);
+
+  virtual AST_Typedef *fe_add_typedef (AST_Typedef *t);
+
+  virtual AST_Native *fe_add_native (AST_Native *n);
+
+  virtual AST_ValueBox *fe_add_valuebox (AST_ValueBox *vb);
+
+  bool pd_has_nested_valuetype;
+
+  ACE_Unbounded_Set<AST_Decl *> previous_;
+  // Container for declaration from previous openings of this module.
+};
+
+#endif           // _AST_MODULE_AST_MODULE_HH