[antlr-interest] Objective-C Codegen?

[Chris Rudolph]

On 5/15/02 10:04 PM, "Hiroyuki Sato" <hiro at kanagawa-u.ac.jp> wrote:

> I'm newbie Objective-C and ANTLR
> 
> As far as I know, gsantlr is one of Code Generator for Objective-C.
> http://www.gnustepweb.org/TDocs/gsantlr/
> 
> gsantlr still loacking many features.
> for example, Exception Handler.
> 
> I modified gnantlr for my study (ObjC and ANTLR)
> and succeed to translate some example programs
> calc, HTML and so on.
> 
> But I could not translate many example which using Exception Handler
> So, I also want to know to translate a try/catch/throw into ObjC.
> For example, how to translate following code into Objective-C?
> 
> try {
>  ...
>  ...
>  try {   // try in catch
>  } catch( FooException e ){
>  } catch( Exception ex ){
>  }
> } catch ( BarExceptionException e ){
>  try { // try in catch
>     ...
>     ...
>  } catch (Exception ex ){
>     throw ex;
>  }
> } catch ( Exception e ){
> throw e;
> }
> 
> On 2002.05.16, at 02:08, mzukowski at yci.com wrote:
> 

Hi Hiroyuki,

How about:

- (void) blah
{
    NS_DURING
    {
        NS_DURING
        {
            NSException*    ex = [ NSException exceptionWithName:
@"BlahException"
                                                       reason: @"just
because"
                                                     userInfo: nil ];
            [ ex raise ];

        }          
        NS_HANDLER    // exception is local variable localException
        {
            if( [ [ localException name ] isEqualToString: @"BlahException"
] )
            {
                // ...
            }
            
            [ localException raise ];
        }
        NS_ENDHANDLER
    }              
    NS_HANDLER    // exception is local variable localException
    {
        if( [ [ localException name ] isEqualToString: @"BlahException" ] )
        {
            // ...
        }
    }
    NS_ENDHANDLER
}

Cheers,
Chris


-- 
Chris Rudolph, Apple Computer, Inc.
rudy at apple.com



 

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