Re: [Objectscript-users] command line debugger

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

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()
> {
>    var a = 1;     // <--- line 8
>    var b = 2;
>    writeln("a=" + a + ", b=" + b + ", globalvar=" +
> globalvar);
> }
> 
> 
> setBreakpoint("test.os",8);
> 
> test();
> 
> 
> ---------------------------
> 
> this is not very clean, but just meant to be an
> example..  maybe  
> someday someone will have some time to package this
> up into a nice  
> command-line debugger program.
> 
> 
> 
> On Oct 17, 2005, at 3:08 PM, Lysander David wrote:
> 
> > Hi,
> >
> > Is there a commandline debugger for objectscript ?
> >
> > Thanks,
> > Lysander
> 
>