AOO410/main/comphelper/inc/comphelper/scopeguard.hxx

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#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;
};

} // namespace comphelper

#endif // ! defined(INCLUDED_COMPHELPER_SCOPEGUARD_HXX)