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 -- You received this message because you are subscribed to the Google Groups "JVM Languages" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/jvm-languages?hl=en.
