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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#if ! defined(INCLUDED_COMPHELPER_SCOPEGUARD_HXX)
#define INCLUDED_COMPHELPER_SCOPEGUARD_HXX
#if ! defined(INCLUDED_COMPHELPERDLLAPI_H)
#include "comphelper/comphelperdllapi.h"
#endif
#include "boost/function.hpp"
#include "boost/noncopyable.hpp"
#include "boost/bind.hpp"
namespace comphelper {
/** ScopeGuard to ease writing exception-safe code.
*/
class COMPHELPER_DLLPUBLIC ScopeGuard : private ::boost::noncopyable
// noncopyable until we have
// good reasons...
{
public:
enum exc_handling { IGNORE_EXCEPTIONS, ALLOW_EXCEPTIONS };
/** @param func function object to be executed in dtor
@param excHandling switches whether thrown exceptions in dtor will be
silently ignored (but OSL_ asserted)
*/
template <typename func_type>
explicit ScopeGuard( func_type const & func,
exc_handling excHandling = IGNORE_EXCEPTIONS )
: m_func( func ), m_excHandling( excHandling ) {}
~ScopeGuard();
/** Dismisses the scope guard, i.e. the function won't
be executed.
*/
void dismiss();
private:
::boost::function0<void> m_func; // preferring portable syntax
exc_handling const m_excHandling;
};
class COMPHELPER_DLLPUBLIC FlagGuard : ScopeGuard
{
public:
explicit FlagGuard( bool& i_flagRef, exc_handling i_excHandling = IGNORE_EXCEPTIONS )
:ScopeGuard( ::boost::bind( ResetFlag, ::boost::ref( i_flagRef ) ), i_excHandling )
{
}
private:
static void ResetFlag( bool& i_flagRef )
{
i_flagRef = false;
}
};
} // namespace comphelper
#endif // ! defined(INCLUDED_COMPHELPER_SCOPEGUARD_HXX)
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