Why you did not use ASM [1] ?
Or better provide a patch to javap to dump java5 signatures.
Rémi
[1] http://asm.ow2.org/
Le 15/11/2010 14:59, iulian dragos a écrit :
Did you ever want to dump Java 5 signatures from existing classfiles?
Did you ever want to find duplicate methods/fields in a classfile?
Probably not, but for those 2 other people who want to do that, I
wrote this awesome tool:
dupcheck [-d|-p] /path/to/Foo.class
-d Find duplicate methods/fields
-p Print raw information in classfiles (member descriptors and Java 5
signatures).
It saved me a lot of time when chasing pesky bugs like #3973
<http://lampsvn.epfl.ch/trac/scala/ticket/3973>, #3828
<http://lampsvn.epfl.ch/trac/scala/ticket/3973>, #2754
<http://lampsvn.epfl.ch/trac/scala/ticket/2754>, especially when
they're regressions (the exit code is non-zero when duplicates are
found, so it can work with git bisect).
It always annoyed me that javap does not understand 'Signature'
attributes, so I added the functionality to look at them.
Here's how it looks:
dra...@dragos-imac scala (master) $ dupcheck -p
build/quick/classes/library/scala/Function1.class
class scala.Function1 extends java.lang.Object with scala.ScalaObject
{
<T1:Ljava/lang/Object;R:Ljava/lang/Object;>Ljava/lang/Object;Lscala/ScalaObject;
public abstract def apply: (Ljava.lang.Object;)Ljava.lang.Object;
(TT1;)TR;
public abstract def toString: ()Ljava.lang.String;
public abstract def compose: (Lscala.Function1;)Lscala.Function1;
<A:Ljava/lang/Object;>(Lscala/Function1<TA;TT1;>;)Lscala/Function1<TA;TR;>;
public abstract def andThen: (Lscala.Function1;)Lscala.Function1;
<A:Ljava/lang/Object;>(Lscala/Function1<TR;TA;>;)Lscala/Function1<TT1;TA;>;
public abstract def unlift:
(Lscala.Predef$$less$colon$less;)Lscala.PartialFunction;
<R1:Ljava/lang/Object;>(Lscala/Predef$$less$colon$less<TR;Lscala/Option<TR1;>;>;)Lscala/PartialFunction<TT1;TR1;>;
public abstract def apply$mcVI$sp: (I)V
..
I know it can be improved tremendously, so I put it up on github. You
can check it out or download pre-built binaries at
https://github.com/dragos/dupcheck.
One idea was to add a parser for Java 5 signatures and beautify them
(right now they are printed as raw strings). Then support for
EnclosingMethod and InnerClasses.
iulian
--
« Je déteste la montagne, ça cache le paysage »
Alphonse Allais
--
« Je déteste la montagne, ça cache le paysage »
Alphonse Allais
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