/*

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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
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program developed by you or with the express written consent of Sun
Microsystems, Inc. ("Sun").

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distribution of Interface Definition Language CFE as permitted herein.

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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
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INTERFACE DEFINITION LANGUAGE CFE IS PROVIDED WITH NO SUPPORT AND WITHOUT
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TO ASSIST IN ITS USE, CORRECTION, MODIFICATION OR ENHANCEMENT.

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 */

#ifndef _AST_DECL_AST_DECL_HH
#define _AST_DECL_AST_DECL_HH

// Rock bottom of AST class hierarchy
//
// This class is inherited by all classes which represent named entities
// in IDL. It implements the line and file recording mechanism and also
// records the type of the node. This may be useful for BEs to be able
// to distinguish the real type of a node given only a superclass.

/*
** DEPENDENCIES: utl_scope.hh, utl_scoped_name.hh, utl_strlist.hh
**
** USE: Included from ast.hh
*/

#include	<idl_fwd.hh>
#include	<idl_narrow.hh>
#include	<idl_bool.hh>
#include	<utl_scoped_name.hh>
#include	<utl_string.hh>

// This class is needed (only for g++) to get around a bug in g++ which
// causes virtual operations to not be looked up correctly if an operation
// is defined in more than one virtual public base class. This class makes
// the hierarchy rooted in a single class, thereby eliminating the situation
// that causes the bug to appear

class	COMMON_Base
{
  public:
        // Narrowing
    DEF_NARROW_METHODS0(COMMON_Base);
};

class	AST_Decl : public virtual COMMON_Base
{
public:
  // Enum defining the different kinds of AST nodes
  enum NodeType {
        NT_module				// Denotes a module
      , NT_root					// Denotes the root of AST
      , NT_interface				// Denotes an interface
      , NT_interface_fwd			// Fwd declared interface
      , NT_const				// Denotes a constant
      , NT_except				// Denotes an exception
      , NT_attr					// Denotes an attribute
      , NT_op					// Denotes an operation
      , NT_argument				// Denotes an op. argument
      , NT_union				// Denotes a union
      , NT_union_branch				// Denotes a union branch
      , NT_struct				// Denotes a structure
      , NT_field				// Denotes a field in structure
      , NT_enum					// Denotes an enumeration
      , NT_enum_val				// Denotes an enum. value
      , NT_string				// Denotes an IDL string
      , NT_array				// Denotes an IDL array
      , NT_sequence				// Denotes an IDL sequence
      , NT_typedef				// Denotes a typedef
      , NT_pre_defined				// Denotes a predefined type
  };

  // Operations

  // Constructor(s)
  AST_Decl();
  AST_Decl(NodeType type, UTL_ScopedName *n, UTL_StrList *pragmas);
  virtual ~AST_Decl() {}

  // Data Accessors
  idl_bool imported();
  void set_imported(idl_bool is_it);
  idl_bool in_main_file();
  void set_in_main_file(idl_bool is_it);
  UTL_Scope *defined_in();
  void set_defined_in(UTL_Scope *);
  NodeType node_type();
  long line();
  void set_line(long l);
  String *file_name();
  void set_file_name(String *s);
  UTL_ScopedName *name();
  void set_name(UTL_ScopedName *n);
  Identifier *local_name();
  void add_pragmas(UTL_StrList *p);
  UTL_StrList *pragmas();
  idl_bool added();
  void set_added(idl_bool is_it);

  // Narrowing
  DEF_NARROW_METHODS0(AST_Decl);
  DEF_NARROW_FROM_DECL(AST_Decl);

  // AST Dumping
  virtual void			dump(std::ostream &o);

  // Other operations

  // Return TRUE if "this" has "s" as an ancestor
  idl_bool			has_ancestor(AST_Decl *s);

private:
  // Data
  idl_bool			pd_imported;    // Imported?
  idl_bool			pd_in_main_file; // Defined in main file?
  UTL_Scope			*pd_defined_in;	// Scope
  NodeType			pd_node_type;	// What kind of node
  long				pd_line;	// Line defined in
  String			*pd_file_name;	// What file defined in
  UTL_ScopedName		*pd_name;	// As given
  Identifier			*pd_local_name;	// Name in scope
  UTL_StrList			*pd_pragmas;	// Pragmas
  idl_bool			pd_added;	// already added

  // Operations

  // Compute the full name of an AST node
  void				compute_full_name(UTL_ScopedName *n);
};

#endif           // _AST_DECL_AST_DECL_HH
