OpenEuphoria

Re: exception handler

• Posted by irv mullins <irvm at ellijay.com> Aug 24, 2004
• 574 views

Pete Lomax wrote:

> It should be the *end* of the try block, or some explicit code as in a
> try/catch/end try statement. This makes it much clearer where to put
> code to check what failed, eg:
> 
> 	try
> 		fail=1
> 		open(...
> 		fail=2
> 		getc(...
> 		fail=3
> 		close(...
> 	catch
> 		if fail=1 then
> 		elsif fail=2 then
> 	end try
> 
> Of course if you use three try blocks, you don't need a fail variable.
> If you want it to loop, add a loop around the try block(s).
> 
> Pete
> PS The above is structured exception handling, and as I said in my
> other post, Rob should get a simpler final exception handler working
> first.

I see it's structured. I can also see there's no way to go back and 
try again if it fails. Suppose the open(... fails. 
That would be fail=1, right? So what does the "if fail=1 then" do?
Go back and try again? If so, How?

Irv