[boost] any interest in BOOST_FINALLY?

From: Alexander Nasonov (alnsn-boost_at_[hidden])
Date: 2005-11-10 09:37:47

Is there an interest to write something like this

    int i = 2, j = 1;

    BOOST_FINALLY_BEGIN( (i)(j) )
    {
        std::cerr << i + j << '\n';
    } BOOST_FINALLY_END

in a code to make sure that a code inside finally block
is always executed when leaving a scope?

Code is here: http://files.rsdn.ru/21403/finally.cpp
Note that it depends on typeof.

Preprocessed output is below:

// Not thread-safe yet
void* _finally_last_params = 0;

int main()
{
    int i = 2, j = 1;

    typedef typeof(i) _finally_typeof_46i;
    typedef typeof(j) _finally_typeof_46j;
    
    struct _finally_params_46
    {
        _finally_typeof_46i & i ;
        _finally_typeof_46j & j ;
    } _finally_params_46 = { i, j };
    
    _finally_last_params = &_finally_params_46;
    
    struct _finally_guard_46
    {
        void* _finally_params;
        
        ~_finally_guard_46()
        {
            typedef struct _finally_params_46 params;
            params* p= static_cast<params*>(_finally_params);
            _finally_body(p -> i , p -> j , 0);
        }
        
        static void _finally_body( _finally_typeof_46i & i
                                 , _finally_typeof_46j & j
                                 , int)
        {
            // USER CODE HERE
            std::cerr << i + j << '\n';
        }

    } _finally_guard_48 = { _finally_last_params };
}

--
Alexander