Re: RE: comparison between BCEL and ASM

Eugene Kuleshov <[email protected]>
Newsgroups gmane.comp.java.objectweb.asm,gmane.comp.jakarta.bcel.devel
Message-ID <[email protected]>
Eric,

   It should be possible to implement a constant pool sorter that will 
work directly with internal ClassWriter's structures.

   Naive and inefficient implementation can sort constant pool on 
visitEnd() method and put result into new ClassWriter instance together 
with key hashes, then run collected class bytecode trough parse/write 
using that new ClassWriter instance with prebuilt constant pool.

   regards,
   Eugene


BRUNETON Eric RD-MAPS-GRE wrote:
> Henri Yandell wrote:
> 
>>I like it, a bold statement :)
>>
>>So, questions to the BCEL community. 
>>
>>1) Does BCEL have use-cases over ASM? I think Eugene's statement is a
>>healthy, competitive one and it'd be good to hear if there's
>>disagreement.
> 
> 
> I think BCEL is needed only if you require very fine control over the
> constant pool (for example to sort these constants or to implement a
> kind of watermarking for Java class by arranging the constant pool in
> some specific way), since ASM does not provide access to it, by design.
> But these are really specific needs, and even then, there are indirect
> ways to do this with ASM (see links below).
> 
> For all other cases I agree with Eugene.
> 
> Eric
> 
> http://cvs.forge.objectweb.org/cgi-bin/viewcvs.cgi/asm/asm/src/org/objec
> tweb/asm/optimizer/
> 
> http://cvs.forge.objectweb.org/cgi-bin/viewcvs.cgi/asm/asm/src/org/objec
> tweb/asm/optimizer/Shrinker.java?rev=1.4&content-type=text/vnd.viewcvs-m
> arkup
> 
> 
> 
> ------------------------------------------------------------------------
> 
>
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