ac419786b3
Change-Id: I1d2f0307c0bf9ff5abde74d3326899a1aaa69c40 Reviewed-on: https://gerrit.libreoffice.org/71346 Tested-by: Jenkins Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_COMPHELPER_FLAGGUARD_HXX
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#define INCLUDED_COMPHELPER_FLAGGUARD_HXX
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#include <comphelper/scopeguard.hxx>
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namespace comphelper
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{
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//= FlagRestorationGuard
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// note: can't store the originalValue in a FlagRestorationGuard member,
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// because it will be used from base class dtor
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struct FlagRestorationGuard_Impl
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{
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bool & rFlag;
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bool const originalValue;
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FlagRestorationGuard_Impl(bool & i_flagRef)
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: rFlag(i_flagRef), originalValue(i_flagRef) {}
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void operator()()
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{
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rFlag = originalValue;
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}
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};
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class FlagRestorationGuard : public ScopeGuard<FlagRestorationGuard_Impl>
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{
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public:
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FlagRestorationGuard( bool& i_flagRef, bool i_temporaryValue )
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: ScopeGuard(FlagRestorationGuard_Impl(i_flagRef))
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{
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i_flagRef = i_temporaryValue;
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}
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};
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//= FlagGuard
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// Guarantees that the flag is true within the scope of the guard, and is set to false after
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// its destruction, regardless of initial flag value
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class FlagGuard : public FlagRestorationGuard
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{
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public:
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// Set flag to false before passing its reference to base class ctor, so that it would be
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// reset back to false in base class dtor
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explicit FlagGuard(bool& i_flagRef)
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: FlagRestorationGuard((i_flagRef = false), true)
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{
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}
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};
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} // namespace comphelper
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#endif // INCLUDED_COMPHELPER_FLAGGUARD_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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