Subj : Still can't get Rhino debugger to work under servlet
To   : netscape.public.mozilla.jseng
From : Jon Brisbin
Date : Thu Sep 01 2005 11:29 am

Thanks for the advice below, Igor. I tried it and was still unable to 
get the debugger to either block execution, or attach to the right context.

Here's basically what I changed:

1) I had to take *everything* out of the method I had it in originally 
and left just:

        debug = Boolean.parseBoolean( script.attributeValue( "debug", 
"false" ) );

        ContextFactory ctxFac = new ContextFactory();
        ctxFac.call( new DoEval() );

2) I put everything into an inner class:

    class DoEval implements ContextAction {

        /* (non-Javadoc)
         * @see 
org.mozilla.javascript.ContextAction#run(org.mozilla.javascript.Context)
         */
        public Object run( Context cx ) {
            final String scriptStr;
            final Scriptable scope = new ImporterTopLevel( cx );
             .....
                File _debugTmpFile = null;
                try {
                    if ( debug ) {
                        _debugTmpFile = writeTmpFile( scriptStr );

                        if ( log.isInfoEnabled() ) {
                            log.info( "Debugging with the following 
objects in context:" );
                            Object[] ids = scope.getIds();
                            for ( Object o : ids ) {
                                log.info( "ID: " + o.toString() );
                            }
                        }

                        Main.mainEmbedded( cx.getFactory(), new 
ScopeProvider()
                            {
                                public Scriptable getScope() {
                                    return scope;
                                }
                            }, _args.get( 
Globals.Keys.XML_DEFINITION_URI ).toString() );
                        org.mozilla.javascript.tools.shell.Main.exec( 
new String[] { "-e",
                                scriptStr } );

                        if ( ( _debugTmpFile != null ) && 
_debugTmpFile.exists() )
                            _debugTmpFile.delete();

                    } else {
                        bsfEngine.eval( "", 0, 0, scriptStr );
                    }
                } catch ( Throwable t ) {
                    error = generateException( t );

If you have any more ideas, I'd be happy to try them. I'm contemplating 
just writing my own debugger, since this has been so much trouble. It 
would probably take me just as long to understand how to make this work 
as it will to just write my own :-/

Jon Brisbin
NPC International, Inc.


igor.bukanov@gmail.com wrote:

>1. Use mainEmbedded form from
>http://lxr.mozilla.org/mozilla/source/js/rhino/toolsrc/org/mozilla/javascript/tools/debugger/Main.java#284
>
>with properly initialized ContextFactory and ScopeProvider.
>
>2. In your servlet code do NOT use
>
>Context cx = Context.enter();
>try {
>    codeThatUseContextInstance
>} finally {
>    Context.exit();
>}
>
>Instead use
>instanceOfContextFactoryToPassToDebugger.call(new ContextAction() {
>    public Object run(Context cx) {
>        codeThatUseContextInstance
>    }
>
>});
>
>Regards, Igor
>
>_______________________________________________
>mozilla-jseng mailing list
>mozilla-jseng@mozilla.org
>http://mail.mozilla.org/listinfo/mozilla-jseng
>
>  
>

.