Re: [Findbugs-core] Fwd: toward ASM 4.0?

16/08/2011 09:33, Bill Pugh wrote:
> I'm looking at the feasibility of moving FindBugs to ASM 4.0.
>
> Moving to 4.0_RC1 was fairly trivial. I just needed to provide an
> implementation of visitInvokeDynamic in a MethodVisitor.
>
> However, the changes between 4.0_RC1 and 4.0 seem to be a showstopper.
>
>> we mostly
>> renamed the package from org.objectweb.asm to org.ow2.asm, and we
>> renamed two classes (MethodHandle to Handle, and MethodType to Type)

Eugene proposed to rename the package so that users will not need to 
rename it themselves to avoid binary incompatibilities (it seems some 
products include 4 or 5 repackaged versions of ASM). From what you say, 
it seems that whatever the option we choose, some users will not be 
satisfied :-(

> This is going to require updating all references to asm classes within
> FindBugs, and more importantly, will /completely break /any third-party
> bug detectors written using ASM.
>
> I don't know how many of those there are. But breaking them all seems
> rather rude, and a good way to discourage people from writing ASM based
> detectors in the feature.
>
> At Google, and probably elsewhere, they have a very strict policy of
> using only one version of a third-party library. So it would be hard to
> update FindBugs inside Google to use ASM 4.0 unless I migrated all uses
> of ASM to 4.0. Which would be a lot of work.
>
> If you really want to completely rename the packages, I'd suggest making
> the new release be NewASM 1.0. That would allow for NewASM 1.0 and ASM
> 3.3 to co-exist.
>
> Bill

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