[REBOL] Trapping errors? - Not like the book says?
From: doug::vos::eds::com at: 3-Aug-2000 10:06
I have read and re-read the sections
REBOL the official guide. about errors.
(eg. pages 276 and following)
Then I put together a function to log errors called log-event (with a
refinement for handling disarmed error objects).
The log-event function will then log the date, time, script name, "error",
and molded error object.
if error? error: try [send [joe--blow--go--go] {test} ][ ;
this will probably force an error
log-event/error system/script/header/file "error" (disarm error) ;
since go.go is not a valid domain
]
It works great if there is an error,
however, if there is not an error, you get this other error message.-->
if error? error: try [send [doug--vos--eds--com] {test} ][ ; this will
probably NOT force an error
log-event/error system/script/header/file "error" (disarm error) ; and
I'll get your test message
]
** Script Error: error needs a value.
** Where: if error? error: try [ send [doug--vos--eds--com] {test} ]
Because error does not receive a value when it
interprets " error: try " -- since there is not an error.
So then I tried...
if error? error: try [send [joe--blow--gogogo--com] {test} (disarm error) ][
; not in the book, but I was just trying stuff
log-event/error system/script/header/file "error" (disarm error)
]
This is bad because the script runs for a while but it is constantly
disarming error that never really occured....
This sort of works but fills up my log file with junk and then
eventually the program crashes with a garbage collection error.
Douglas Vos - EDS/GM-BSU Webmaster
e-Mail: mailto:[doug--vos--eds--com]
