[swift-evolution] Catching NSException
Goffredo Marocchi
panajev at gmail.com
Fri Apr 1 15:39:35 CDT 2016
Thank you!!!
[[iOS messageWithData:ideas] broadcast]
> On 1 Apr 2016, at 20:04, Evan Maloney via swift-evolution <swift-evolution at swift.org> wrote:
>
> Hi Jon,
>
> I ran into a similar situation and needed a way to not only catch NSExceptions from Swift, but throw them as well. If it would he useful to you, it's part of the open-source CleanroomBridging module, which is intended to ease a few Swift/ObjC interoperability issues. The header file for the exception-related code is here:
>
> https://github.com/emaloney/CleanroomBridging/blob/master/Sources/Exception.h
>
> It is included in the module's bridging header, so you can use it from Swift.
>
> Evan
>
>
>
>
>> On Mar 24, 2016, at 2:06 PM, Jon Brooks via swift-evolution <swift-evolution at swift.org> wrote:
>>
>> Apologies if this has come up before - I've fallen behind in following this list.
>>
>> I recently ran into an issue where I needed to be able to catch NSExceptions raised by Objective C API in Swift, and found no good way to do that. Currently the only possible way is to via Objective C code that wraps the call in an Objective C style @try/@catch block. If building a swift framework, this means a separate module, since we can't use bridging headers.
>>
>> My quick attempt at a workaround can be seen here: https://github.com/jonbrooks/ObjCTryCatch and there are other workarounds out there too. I wondered if there has been any discussion to building something like this into swift directly. I don't really have any good ideas, but maybe something like
>>
>> do {
>> objc_try someObjectiveCInstance.methodThatMightRaiseException()
>> } catch {
>> //error would be an ErrorType that contains info about the exception raised, or the exception itself?
>> }
>>
>> Any thoughts?
>>
>>
>>
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