// Created by: DAUTRY Philippe
// Copyright (c) 1997-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

//      	-----------------

// Version:	0.0
//Version	Date		Purpose
//		0.0	Feb 14 1997	Creation

enum {
  TDF_AttributeValidMsk     = 1,
  TDF_AttributeBackupMsk    = 2,
  TDF_AttributeForgottenMsk = 4
};

inline Standard_Integer TDF_Attribute::Transaction() const
{ return myTransaction; }

// Validation
inline void TDF_Attribute::Validate(const Standard_Boolean aStatus)
{ myFlags = (aStatus) ?
    (myFlags | TDF_AttributeValidMsk) : (myFlags & ~TDF_AttributeValidMsk); }

inline Standard_Boolean TDF_Attribute::IsValid() const
{ return (myFlags & TDF_AttributeValidMsk) != 0 ; }

// Backup
inline void TDF_Attribute::Backup(const Standard_Boolean aStatus)
{
  myFlags = (aStatus) ?
    (myFlags | TDF_AttributeBackupMsk) : (myFlags & ~ TDF_AttributeBackupMsk);
  Validate(!aStatus);
}

inline Standard_Boolean TDF_Attribute::IsBackuped() const
{ return (myFlags & TDF_AttributeBackupMsk) != 0; }

// IsNew
inline Standard_Boolean TDF_Attribute::IsNew() const
{ return IsValid () && myBackup.IsNull(); }

// IsForgotten
inline Standard_Boolean TDF_Attribute::IsForgotten() const
{ return (myFlags & TDF_AttributeForgottenMsk) != 0; }

// operator <<
inline Standard_OStream& operator << (Standard_OStream& anOS,
                                      const Handle(TDF_Attribute)& anAtt)
{ return anAtt->Dump(anOS); }

//=======================================================================
inline void TDF_Attribute::SetID(const Standard_GUID& )
{}

//=======================================================================
inline void TDF_Attribute::SetID()
{}