Hi Joe, Thanks very much. That method will do nicely. Regarding EndException and ThreadEndException, do you think it would be OK then to put if clauses to exclude those two exception types?
Regards, Ian. -- On 24 Feb 2007, at 7:30 pm, Joe Huber wrote: > At 7:03 PM +0000 2/24/07, Ian Piper wrote: >> I am trying to bullet-proof my application as far as possible and >> wanted to put Exception handlers in all of my methods. I have >> found that the Exceptions block in any method that calls quit gets >> fired, which surprised me rather. Why would this happen? > > RB uses an EndException to quit your program. So you need to be > careful to only catch exceptions you're prepared to handle. RB also > uses a ThreadEndException to kill threads, so be sure to avoid > those too. > >> Also, is there a way for the Exception block to report the type of >> Exception. I could do >> >> Exception err >> if err isA [whatever]Exception then >> ... >> >> but then I'd need to add else clauses for all types of Exception - >> rather ungainly. Is there a toString or similar type of method >> somewhere that lets me pick up an error type String or Integer to >> report in a log-file or error message? I tried str(err) but this >> causes a type mismatch Exception (ironically enough). > > You can handle a particular kind of exception by specifying the > exception type. > > Exception err as NilObjectException > > To get the name of the exception for logging purposes I wrote an > extension method to the runtime exception class. (included below) > > Also be careful about adding exception handlers to long methods. > There's a bug where they aren't called in Windows and MacIntel > builds. You wind up in the App.UnhandledException event instead. > http://www.realsoftware.com/feedback/viewreport.php?reportid=tsztqlsf > > Regards, > Joe Huber > > > Function Name(Extends err as RuntimeException) As string > if err ISA AssertionException then > return "AssertionException" > elseif err ISA FunctionNotFoundException then > return "FunctionNotFoundException" > elseIf err ISA IllegalCastException then > return "IllegalCastException" > elseIf err ISA InvalidParentException then > return "InvalidParentException" > elseIf err ISA KeyChainException then > return "KeyChainException" > elseIf err ISA KeyNotFoundException then > return "KeyNotFoundException" > elseIf err ISA NilObjectException then > return "NilObjectException" > elseIf err ISA OLEException then > return "OLEException" > elseIf err ISA OutOfBoundsException then > return "OutOfBoundsException" > elseIf err ISA OutOfMemoryException then > return "OutOfMemoryException" > elseIf err ISA RbScriptAlreadyRunningException then > return "RbScriptAlreadyRunningException" > elseIf err ISA RegExException then > return "RegExException" > elseIf err ISA RegistryAccessErrorException then > return "RegistryAccessErrorException" > elseIf err ISA ShellNotRunningException then > return "ShellNotRunningException" > elseIf err ISA SOAPException then > return "SOAPException" > elseIf err ISA SpotlightException then > return "SpotlightException" > elseIf err ISA StackOverflowException then > return "StackOverflowException" > elseIf err ISA ThreadAlreadyRunningException then > return "ThreadAlreadyRunningException" > elseIf err ISA TypeMismatchException then > return "TypeMismatchException" > elseIf err ISA UnsupportedFormatException then > return "UnsupportedFormatException" > elseIf err ISA XMLDOMException then > return "XMLDOMException" > elseIf err ISA XMLException then > return "XMLException" > elseIf err ISA XMLReaderException then > return "XMLReaderException" > else > return "Unknown exception type" > end if > > End Function > > _______________________________________________ Unsubscribe or switch delivery mode: <http://www.realsoftware.com/support/listmanager/> Search the archives: <http://support.realsoftware.com/listarchives/lists.html>
