Re: [Objectscript-users] command line debugger

[Rob C. <ro...@ti...>]

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