On Thu, Mar 25, 2010 at 1:14 PM, John Rose <john.r...@sun.com> wrote: >> MethodHandleImpl.java:1104:in `raiseException': >> java.lang.ClassCastException: required class [Ljava.lang.Object; but >> encountered class java.util.Collections$UnmodifiableRandomAccessList >> from MethodHandle.java:357:in `invokeVarargs' >> from MethodHandles.java:563:in `invoke' >> from DynamicLinkerImpl.java:120:in `_relinkAndInvoke' >> from FilterGeneric.java:520:in `invoke_C0' >> from dynamic.duby:3:in `foo' >> ... > > Do you know who is creating the UnmodifiableRandomAccessList? > > It looks like it needs a toArray call to create the low-level varargs list.
I don't think it does. The URAL comes from Duby's literal array syntax (the [1,2,3] in the example) and for the error in question it's simply the receiver of the call (getClass or size). >> If you want to give it a shot you just need a JRuby snapshot build >> (ci.jruby.org/snapshots), BiteScript (github.com/headius/bitescript), >> and Duby (github.com/headius.duby). I committed my patched >> dynalang-invoke jar in Duby's javalib dir. javac >> src/org/jruby/duby/DynalangBootstrap.java and run jruby bin/duby <file >> or -e> with appropriate JAVA_OPTS for invokedynamic. > > I did some browsing and downloading, but there are too many moving parts to > quickly figure out... Sorry! We'll have a release of Duby soon...then it will simply be: 1. install JRuby somehow (unpack, run installer, whatever) 2. gem install duby 3. duby <blah> I'll let this list know when it's available that way. >> Speaking of that...I was surprised there's no baseline bootstrap >> method built into dynalang/invoke. It was a trivial amount of code to >> write, but I can imagine a lot of simple uses of dynalang/invoke will >> just want to use the standard multimethod Java dispatch directly. If I >> put together a patch to include my DynalangBootstrap.java, will you >> accept it? (or maybe I have commit rights and I don't know it?) > > No, sorry, you don't at present, but you should have one. However, to my > surprise, you are not on this list, which is the first place your name needs > to appear for such things: > https://sca.dev.java.net/CA_signatories.htm > > Send me link to DynalangBootstrap.java. I browsed a couple obvious places > under github.com/headius/duby but didn't see it. (And there's no download > page??) Actually I think this could just go into Attila's project, unless the baseline dynalang Java MOP stuff could get included in JSR-292 (which would be awesome, but I know that's a huge addition and it's too late). I just figured that people interested in "plain old Java dynamic dispatch" would want to just specify an existing bootstrap method in Attila's library that only does Java multi-method dispatch. In my ideal world, JSR-292 would ship with a default bootstrapper that just does Java dispatch (with appropriate conversions for JLS dispatch and maybe a minimal PIC) so that adding a "dynamic" type to Java itself would basically be a done deal. Then Attila's MOP stuff would just fall back on that dispatcher after trying language-specific ones. - Charlie _______________________________________________ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
