on1 construct

[Jacobo Bulaevsky]

I've started functions in the following way:

function ()
{
    static char first_time_in = TRUE;

    if (first_time_in)  {
        first_time_in = FALSE;
	bla, bla, bla...
    };

    etc...
}

One contruct that I've always wanted to have is:

function ()
{
    on1  {
	bla, bla, bla...
    };

    etc...
}

I've been trying to define a macro to do this but haven't been succesful.
What I've come up with looks like:

#define on1(X) static char first_time_in = TRUE; if (first_time_in) {first_time_in = FALSE; X;} 

But unfortunately this macro has to be used like:

    on1  (
        bla, bla, bla...
    );

which is VERY inappropriate.  Can anybody out there think of a better
macro definition, comments, suggestions?

Thanks in advance.

Jacobo Bulaevsky
-- 

UUCP:   {decvax!decwrl, ucbvax, ihnp4} !sun!megatest!jacob
	{lbl-csam, amd, ubvax} !megatest!jacob
ARPA:   megatest!jacob@{Glacier||Shasta}.ARPA
USMAIL: Megatest; 880 Fox Lane; San Jose, Ca 95131
PHONE:  (408)998-7110 x 3171