[cfe-commits] [PATCH] External Sema Source

Jordan Rose jordan_rose at apple.com
Thu Oct 11 11:13:27 PDT 2012

On Oct 11, 2012, at 11:11 , Vassil Vassilev <vvasilev at cern.ch> wrote:

> Hi,
> On 10/11/12 7:21 PM, Jordan Rose wrote:
>> I don't know enough about this to make good comments, but rather than have "isMultiplex" as the field in Sema, why not call it "isOwned"? That's more in line with some of our other delegate-pattern uses, and it keeps it from being a temptation to start abusing the field. We could also some day in the future allow Sema to take ownership of arbitrary external sources as well, though that's clearly not a goal right now.
> I agree that Sema should take the ownership it's external source (or at least we it should be specified with a flag while setting it). For example the ASTContext owns its ExternalASTSource.
> My original intent was to try to keep the semantics (which is was not trivial for most of the reimplemented routines) of the existing code and extend it so that it can fit to our use case.
> Otherwise I agree and I will rename the flag if we decide to keep it…

Ah, I see…the MultiplexExternalSource doesn't combine 2 sources, it combines N sources, and so addExternalSource needs to know if there's already a multiplex source in place. Okay, I see your point; keeping the flag as "isMultiplex" is fine.


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