include/comphelper/flagguard.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef COMPHELPER_FLAGGUARD_HXX
  21 #define COMPHELPER_FLAGGUARD_HXX
  22
  23 #include "comphelper/scopeguard.hxx"
  24
  25 //......................................................................................................................
  26 namespace comphelper
  27 {
  28 //......................................................................................................................
  29
  30     //==================================================================================================================
  31     //= FlagRestorationGuard
  32     //==================================================================================================================
  33     class COMPHELPER_DLLPUBLIC FlagRestorationGuard : public ScopeGuard
  34     {
  35     public:
  36         FlagRestorationGuard( bool& i_flagRef, bool i_temporaryValue, exc_handling i_excHandling = IGNORE_EXCEPTIONS )
  37             :ScopeGuard( ::boost::bind( RestoreFlag, ::boost::ref( i_flagRef ), !!i_flagRef ), i_excHandling )
  38         {
  39             i_flagRef = i_temporaryValue;
  40         }
  41
  42         ~FlagRestorationGuard();
  43
  44     private:
  45         static void RestoreFlag( bool& i_flagRef, bool i_originalValue )
  46         {
  47             i_flagRef = i_originalValue;
  48         }
  49     };
  50
  51     //==================================================================================================================
  52     //= FlagGuard
  53     //==================================================================================================================
  54     class COMPHELPER_DLLPUBLIC FlagGuard : public ScopeGuard
  55     {
  56     public:
  57         explicit FlagGuard( bool& i_flagRef, exc_handling i_excHandling = IGNORE_EXCEPTIONS )
  58             :ScopeGuard( ::boost::bind( ResetFlag, ::boost::ref( i_flagRef ) ), i_excHandling )
  59         {
  60             i_flagRef = true;
  61         }
  62
  63         ~FlagGuard();
  64
  65     private:
  66         static void ResetFlag( bool& i_flagRef )
  67         {
  68             i_flagRef = false;
  69         }
  70     };
  71
  72 //......................................................................................................................
  73 } // namespace comphelper
  74 //......................................................................................................................
  75
  76 #endif // COMPHELPER_FLAGGUARD_HXX
  77
  78 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */