Re: Some other oddities

[Sean Luke <sean at cs dot gmu dot edu>]

On May 31, 2006, at 2:06 AM, Per Bothner wrote:

> Is that jython or "native" python?

Python.  Actually, I've found few tests where optimized Java isn't  
around 10x optimized python.  At least as of about six months ago.   
That's why I was so surprised with the type-optimized kawa results.   
jython is slower still.


> > > If you *compile* a module that define two mutually references  
> > > classes,
> > > I believe that should work.
> > Actually, I'm failing on loading classes compiled to .class files  
> > as well.
>
> I suggest compiling both classes at the same time:
>   kawa -C tutoria1.scm ca.scm

A compile like this, followed by (require <ca>) (require <tutorial1>)  
works!  Unfortunately, if I do (require <tutorial1>) first, I get

exception while initializing module tutorial1
        at gnu.expr.ModuleInfo.setupModuleExp(ModuleInfo.java:100)
        at kawa.standard.require.importDefinitions(require.java:194)
        at kawa.standard.require.scanForDefinitions(require.java:158)
        at kawa.lang.Syntax.scanForm(Syntax.java:64)
        at kawa.lang.Translator.scanForm(Translator.java:1006)
        at gnu.kawa.lispexpr.LispLanguage.parse(LispLanguage.java:80)
        at gnu.kawa.lispexpr.LispLanguage.parse(LispLanguage.java:47)
        at kawa.Shell.run(Shell.java:207)
        at kawa.Shell.run(Shell.java:172)
        at kawa.Shell.run(Shell.java:159)
        at kawa.repl.main(repl.java:846)
Caused by: exception while initializing module tutorial1
        at gnu.expr.ModuleContext.makeInstance(ModuleContext.java:70)
        at gnu.expr.ModuleContext.findInstance(ModuleContext.java:82)
        at gnu.expr.ModuleInfo.getInstance(ModuleInfo.java:141)
        at gnu.expr.ModuleInfo.setupModuleExp(ModuleInfo.java:87)
        ... 10 more
Caused by: java.lang.InstantiationException: tutorial1
        at java.lang.Class.newInstance0(Class.java:335)
        at java.lang.Class.newInstance(Class.java:303)
        at gnu.expr.ModuleContext.makeInstance(ModuleContext.java:65)
        ... 13 more

[by the way, I wanted to say thanks for all your responses --  
particularly for this one where at this stage I'm really feeding bug  
reports more than having further problems that can't be solved

> > java.lang.RuntimeException: class not instantiable: in load
> >         at kawa.standard.load.loadClassFile(load.java:48)
>
> It can be useful to put an ex.printStackTrace() just before the
> re-throw.

Hmmm, I wasn't throwing anything -- it's an exception in Kawa I think.

Sean