Yes exactly and I would like to use the importingContext of specify how to filter the model but in a conistent manner.
Stef
On Sep 21, 2008, at 11:33 AM, Oscar Nierstrasz wrote:
Well, if a visitor has to implement many visit methods, but not all visitors need to do something for visitable items, then it is handy to have a default visitor that implements all the visit methods with empty bodies. You then simply subclass this default visitor and override the few visit methods that you need.
There is an example in the compiler construction course.
https://www.iam.unibe.ch/scg/svn_repos/Lectures/CompilerConstruction/04Parsi...
https://www.iam.unibe.ch/scg/svn_repos/Lectures/CompilerConstruction/Example...
Cheers,
- on
On Sep 20, 2008, at 23:33, Tudor Girba wrote:
I am curious about the use case. Could you elaborate a bit on this one?
Cheers, Doru
On Sep 18, 2008, at 1:18 PM, Oscar Nierstrasz wrote:
I guess you mean a default visitor with empty visit methods that can be subclassed?
Yeah, we need that.
- on
On Sep 18, 2008, at 13:09, stéphane ducasse wrote:
Hi guys
We are looking for a model walker (visitor). Does any one of you already implement one?
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