include/opencascade/TDF_Attribute.lxx

0001 // Created by: DAUTRY Philippe
0002 // Copyright (c) 1997-1999 Matra Datavision
0003 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0004 //
0005 // This file is part of Open CASCADE Technology software library.
0006 //
0007 // This library is free software; you can redistribute it and/or modify it under
0008 // the terms of the GNU Lesser General Public License version 2.1 as published
0009 // by the Free Software Foundation, with special exception defined in the file
0010 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0011 // distribution for complete text of the license and disclaimer of any warranty.
0012 //
0013 // Alternatively, this file may be used under the terms of Open CASCADE
0014 // commercial license or contractual agreement.
0015
0016 //              -----------------
0017
0018 // Version:     0.0
0019 // Version      Date            Purpose
0020 //              0.0     Feb 14 1997     Creation
0021
0022 enum
0023 {
0024   TDF_AttributeValidMsk     = 1,
0025   TDF_AttributeBackupMsk    = 2,
0026   TDF_AttributeForgottenMsk = 4
0027 };
0028
0029 inline Standard_Integer TDF_Attribute::Transaction() const
0030 {
0031   return myTransaction;
0032 }
0033
0034 // Validation
0035 inline void TDF_Attribute::Validate(const Standard_Boolean aStatus)
0036 {
0037   myFlags = (aStatus) ? (myFlags | TDF_AttributeValidMsk) : (myFlags & ~TDF_AttributeValidMsk);
0038 }
0039
0040 inline Standard_Boolean TDF_Attribute::IsValid() const
0041 {
0042   return (myFlags & TDF_AttributeValidMsk) != 0;
0043 }
0044
0045 // Backup
0046 inline void TDF_Attribute::Backup(const Standard_Boolean aStatus)
0047 {
0048   myFlags = (aStatus) ? (myFlags | TDF_AttributeBackupMsk) : (myFlags & ~TDF_AttributeBackupMsk);
0049   Validate(!aStatus);
0050 }
0051
0052 inline Standard_Boolean TDF_Attribute::IsBackuped() const
0053 {
0054   return (myFlags & TDF_AttributeBackupMsk) != 0;
0055 }
0056
0057 // IsNew
0058 inline Standard_Boolean TDF_Attribute::IsNew() const
0059 {
0060   return IsValid() && myBackup.IsNull();
0061 }
0062
0063 // IsForgotten
0064 inline Standard_Boolean TDF_Attribute::IsForgotten() const
0065 {
0066   return (myFlags & TDF_AttributeForgottenMsk) != 0;
0067 }
0068
0069 // operator <<
0070 inline Standard_OStream& operator<<(Standard_OStream& anOS, const Handle(TDF_Attribute)& anAtt)
0071 {
0072   return anAtt->Dump(anOS);
0073 }