Re: [Objectscript-users] command line debugger

[Lysander D. <sa...@sb...>]

Arrgh!!! I put too many underscores in front of eval.
__eval() works but ___eval() doesn't.  
The try block really did the trick.

BTW I was wondering if you had a chance to
set up a login for me in trac so that I could
check out the classloader changes in subversion ?


As always, thanks for all the help,
Lysander


--- Rob Clark <ro...@ti...> wrote:

> hmm...  try putting a try/catch around the call to
> __eval()... it  
> could be throwing an exception for some reason. 
> Which ObjectScript  
> version are you using?  Send me your version of
> setBreakpoint() (if  
> you've made any changes), and I'll try to reproduce
> it when I get a  
> few mins over the weekend.
> 
> 
> btw, sorry for the delayed response, I've been in
> the midst of a  
> major debugging session for the last few days. 
> (Debugging object  
> code on a small embedded platform is fun.)
> 
> 
> On Oct 18, 2005, at 9:36 AM, Lysander David wrote:
> 
> > Unfortunately,  even after stepping ( 's' ) for
> one
> > line
> > nothing is written to stdout.  Additionally,
> > attempting to write a simple string to stdout like
> > this:
> >
> > writeln ( "a nice string" );
> >
> > doesn't result in any output.
> >
> > Additionally, after modifying
> > oscript.OscriptInterpreter.__eval(String str,
> Scope
> > scope)
> >
> > to print the string to be evaluated with this
> >
> > System.out.println ( "eval: \"" + str + "\"");
> >
> > nothing is printed out.  It almost appears that
> > __eval is not being called.
> >
> > How would it be possible to ensure that __eval
> > is getting called ?
> >
> > Thanks,
> > Lysander
> >
> >
> > --- Rob Clark <ro...@ti...> wrote:
> >
> >
> >> you need to "s" (step) for at least one line,
> >> because on the line it
> >> halts on, "a" has not been declared yet.  It
> should
> >> probably result
> >> in a NoSuchMemberException which isn't getting
> >> printed out for some
> >> reason
> >>
> >>
> >> On Oct 17, 2005, at 10:56 PM, Lysander David
> wrote:
> >>
> >>
> >>> That appears to work.  However after hitting the
> >>> breakpoint entering this:
> >>>
> >>> writeln ( "a" )
> >>>
> >>> results in nothing being written to standard
> out.
> >>>
> >>> Does that successfully write anything to
> standarad
> >>>
> >> out
> >>
> >>> for you ?
> >>>
> >>> If not, do you know what needs to be changed in
> >>> order to allow that command to successfully
> output
> >>> text ?
> >>>
> >>> Thanks,
> >>> Lysander
> >>>
> >>>
> >>> --- Rob Clark <ro...@ti...> wrote:
> >>>
> >>>
> >>>
> >>>> not really... you might be able to use the
> >>>>
> >> debugger
> >>
> >>>> API to setup a
> >>>> read-eval-print shell to run at certain file
> and
> >>>> line numbers... for
> >>>> example:
> >>>>
> >>>>
> >>>> // dbg.os:
> >>>>
> >>>> function setBreakpoint( filename, line )
> >>>> {
> >>>>    var file = pkg.fs.resolve(filename);
> >>>>    Debugger.setBreakpoint(
> >>>>      file, line,
> >>>>      new function() extends
> Debugger.Breakpoint()
> >>>>
> >> {
> >>
> >>>>
> >>>>        public function handle( scope, file,
> line
> >>>>
> >> )
> >>
> >>>>        {
> >>>>          var status = null;
> >>>>
> >>>>
> >>>>          mixin java.io;
> >>>>          writeln("hit breakpoint at " + file +
> >>>>
> >> ":" +
> >>
> >>>> line);
> >>>>          var shell = new function() extends
> >>>> oscript.Shell(
> >>>>            new BufferedReader( new
> >>>> InputStreamReader(System.in) ),
> >>>>            new PrintWriter(System.out),
> >>>>            new PrintWriter(System.err)
> >>>>          ) {
> >>>>
> >>>>            // overload to evaluate in the scope
> >>>>
> >> of
> >>
> >>>> the breakpoint
> >>>>            public function evalStr(str)
> >>>>            {
> >>>>              // note: default implementation of
> >>>> read() automagically
> >>>> appends ";"
> >>>>              if( (str == "exit;") || (str ==
> >>>>
> >> "c;") )
> >>
> >>>> status = "exit";
> >>>>              else if( str == "step;" || (str ==
> >>>> "s;") ) status = "step";
> >>>>
> >>>>              if( status != null )
> >>>>                return status;
> >>>>
> >>>>              return
> >>>> oscript.OscriptInterpreter.__eval( str, scope
> );
> >>>>            }
> >>>>
> >>>>            private var _super_read = read;
> >>>>
> >>>>            public function read()
> >>>>            {
> >>>>              if( status != null )
> >>>>                return "exit";
> >>>>              return _super_read();
> >>>>            }
> >>>>
> >>>>          }();
> >>>>
> >>>>          shell.run();
> >>>>
> >>>>          if( status == "step" )
> >>>>            return this;   // keep stepping
> >>>>
> >>>>          return null;     // stop stepping
> >>>>        }
> >>>>
> >>>>      }()
> >>>>    );
> >>>> }
> >>>>
> >>>>
> >>>> ---------------------------
> >>>>
> >>>> // test.os
> >>>>
> >>>> import "dbg.os";
> >>>>
> >>>> var globalvar = 2;
> >>>>
> >>>> function test()
> 
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