// -*- C++ -*-
// $Id: Signature.h 43659 2002-02-20 22:05:12Z mesnier_p $

// File: Signature.h

// Author: Phil Mesnier


#ifndef _SIGNATURE_H_
#define _SIGNATURE_H_

// Signature class encapsulates a single line of nm output. This line may be 
// either an "undefined" name to be resolved, or text or data which resolves 
// the unknowns. Some of the features of the Signature class are currently 
// unused, such as owner_, which is anticipation of analysis that may lead to 
// further code reduction. The premise being that unresolved symbols that are 
// defined within otherwise unused code should not be resolved. However this 
// information is not available in the output of nm. Further research is 
// required.
// 
// Signatures are reference counted to avoid duplication.

#include <ace/SString.h>

class Signature {
public:

  enum Kind {
    text_,
    undef_ 
  };

  Signature (const ACE_CString &);
  void used ();
  int used_count() const;

  const ACE_CString &name() const;

  Signature *dup();
  void release();

private:
  ACE_CString name_;
  int ref_count_;
  int used_;
  Signature * owner_; 
  Kind kind_;
};

#endif
