Ironruby core - Dec 2008 - Determining line number of runtime errors

Hello all,

I''m just wondering if there''s any way to see what line of the
source
code was being executed when an error occurred. This is possible when
the source is being parsed/compiled/interpreted by inspecting
SyntaxErrorException.Line? what about when the source is being
evaluated?

Thanks,
benjamin
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Posted via http://www.ruby-forum.com/.

You should be able to pass in "-D" to ir.exe to get this information.

On Thu, Dec 11, 2008 at 1:09 AM, Benjamin van der Veen <lists at
ruby-forum.com
> wrote:
> Hello all,
>
> I''m just wondering if there''s any way to see what line of
the source
> code was being executed when an error occurred. This is possible when
> the source is being parsed/compiled/interpreted by inspecting
> SyntaxErrorException.Line? what about when the source is being
> evaluated?
>
> Thanks,
> benjamin
> --
> Posted via http://www.ruby-forum.com/.
> _______________________________________________
> Ironruby-core mailing list
> Ironruby-core at rubyforge.org
> http://rubyforge.org/mailman/listinfo/ironruby-core
>


-- 
Michael Letterle
[Polymath Prokrammer]
http://blog.prokrams.com
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Michael Letterle wrote:
> You should be able to pass in "-D" to ir.exe to get this
information.
> 
Oops, perhaps I should have been more specific about what I''m doing.
I''m
not actually using ir.exe, I''m creating 
ScriptRuntime/ScriptEngine/ScriptScope/ScriptSource in C# code.

I''m wrapping the call to aScriptSource.Execute(aScriptScope) in a 
try-catch block. One of my catch blocks explicitly catches a 
SyntaxErrorException, which as I mentioned before has a Line property. I 
notice that runtime errors cause many different type of exceptions, so 
I''m speculating that there must be some other mechanism for determining
what line the error occurred on.

Thanks,
benjamin

-- 
Posted via http://www.ruby-forum.com/.

Has this been answered? I don''t think it has yet. John, Tomas or Curt?

-----Original Message-----
From: ironruby-core-bounces at rubyforge.org [mailto:ironruby-core-bounces at
rubyforge.org] On Behalf Of Benjamin van der Veen
Sent: Thursday, December 11, 2008 11:56 AM
To: ironruby-core at rubyforge.org
Subject: Re: [Ironruby-core] Determining line number of runtime errors

Michael Letterle wrote:
> You should be able to pass in "-D" to ir.exe to get this
information.
>
Oops, perhaps I should have been more specific about what I''m doing.
I''m
not actually using ir.exe, I''m creating
ScriptRuntime/ScriptEngine/ScriptScope/ScriptSource in C# code.

I''m wrapping the call to aScriptSource.Execute(aScriptScope) in a
try-catch block. One of my catch blocks explicitly catches a
SyntaxErrorException, which as I mentioned before has a Line property. I
notice that runtime errors cause many different type of exceptions, so
I''m speculating that there must be some other mechanism for determining
what line the error occurred on.

Thanks,
benjamin

--
Posted via http://www.ruby-forum.com/.
_______________________________________________
Ironruby-core mailing list
Ironruby-core at rubyforge.org
http://rubyforge.org/mailman/listinfo/ironruby-core

>From the hosting interface, you need to manually set RuntimeSetup.DebugMode
= true when creating the ScriptRuntime.
-----Original Message-----
From: ironruby-core-bounces at rubyforge.org [mailto:ironruby-core-bounces at
rubyforge.org] On Behalf Of Jim Deville
Sent: Monday, December 15, 2008 4:45 PM
To: ironruby-core at rubyforge.org
Subject: Re: [Ironruby-core] Determining line number of runtime errors

Has this been answered? I don''t think it has yet. John, Tomas or Curt?

-----Original Message-----
From: ironruby-core-bounces at rubyforge.org [mailto:ironruby-core-bounces at
rubyforge.org] On Behalf Of Benjamin van der Veen
Sent: Thursday, December 11, 2008 11:56 AM
To: ironruby-core at rubyforge.org
Subject: Re: [Ironruby-core] Determining line number of runtime errors

Michael Letterle wrote:
> You should be able to pass in "-D" to ir.exe to get this
information.
>
Oops, perhaps I should have been more specific about what I''m doing.
I''m
not actually using ir.exe, I''m creating
ScriptRuntime/ScriptEngine/ScriptScope/ScriptSource in C# code.

I''m wrapping the call to aScriptSource.Execute(aScriptScope) in a
try-catch block. One of my catch blocks explicitly catches a
SyntaxErrorException, which as I mentioned before has a Line property. I
notice that runtime errors cause many different type of exceptions, so
I''m speculating that there must be some other mechanism for determining
what line the error occurred on.

Thanks,
benjamin

--
Posted via http://www.ruby-forum.com/.
_______________________________________________
Ironruby-core mailing list
Ironruby-core at rubyforge.org
http://rubyforge.org/mailman/listinfo/ironruby-core

_______________________________________________
Ironruby-core mailing list
Ironruby-core at rubyforge.org
http://rubyforge.org/mailman/listinfo/ironruby-core

Curt Hagenlocher wrote:
>>From the hosting interface, you need to manually set
RuntimeSetup.DebugMode = true when creating the ScriptRuntime.
I saw that option and enabled it (this is what the -D flag does in 
ir.exe), but I''m not sure where I get the line number when an error 
occurs. I haven''t had a chance to sit down to study the source of
ir.exe
to see how it does it, but just by browsing through intellisense and 
using the immediate window in VS, I couldn''t find any relevant 
properties (or properties of properties) on the thrown exception or any 
of the other objects involved (the runtime, the engine, the scope, or 
the source). I must be missing something. Any ideas?

Thanks,
benjamin
-- 
Posted via http://www.ruby-forum.com/.

I think the logic for this is all in RubyExceptionData.cs.  You should be able
to use RubyExceptionData.GetInstance to get a RubyExceptionData object for the
thrown exception and then access the Backtrace property on this object to get
the frame information.

-----Original Message-----
From: ironruby-core-bounces at rubyforge.org [mailto:ironruby-core-bounces at
rubyforge.org] On Behalf Of Benjamin van der Veen
Sent: Tuesday, December 16, 2008 12:42 AM
To: ironruby-core at rubyforge.org
Subject: Re: [Ironruby-core] Determining line number of runtime errors

Curt Hagenlocher wrote:
>>From the hosting interface, you need to manually set
RuntimeSetup.DebugMode = true when creating the ScriptRuntime.
I saw that option and enabled it (this is what the -D flag does in
ir.exe), but I''m not sure where I get the line number when an error
occurs. I haven''t had a chance to sit down to study the source of
ir.exe
to see how it does it, but just by browsing through intellisense and
using the immediate window in VS, I couldn''t find any relevant
properties (or properties of properties) on the thrown exception or any
of the other objects involved (the runtime, the engine, the scope, or
the source). I must be missing something. Any ideas?

Thanks,
benjamin
--
Posted via http://www.ruby-forum.com/.
_______________________________________________
Ironruby-core mailing list
Ironruby-core at rubyforge.org
http://rubyforge.org/mailman/listinfo/ironruby-core

Curt Hagenlocher wrote:
> I think the logic for this is all in RubyExceptionData.cs.  You should 
> be able to use RubyExceptionData.GetInstance to get a RubyExceptionData 
> object for the thrown exception and then access the Backtrace property 
> on this object to get the frame information.
Hm, the Backtrace property has the stack frame in question, but contains 
no useful information. Consider the following program (output is below):

ScriptRuntimeSetup runtimeSetup = new ScriptRuntimeSetup();
runtimeSetup.DebugMode = true;
runtimeSetup.LanguageSetups.Add(Ruby.CreateRubySetup());
ScriptRuntime runtime = new ScriptRuntime(runtimeSetup);
ScriptEngine engine = runtime.GetRubyEngine();
ScriptScope scriptScope = engine.CreateScope();
ScriptSource source = engine.CreateScriptSourceFromString(
@"
a = nil
a.blarg();
");

try
{
    source.Execute(scriptScope);
}
catch (Exception e)
{
    RubyExceptionData red = RubyExceptionData.GetInstance(e);
    Console.WriteLine("Oh no! " + e.Message);
    foreach(MutableString l in red.Backtrace)
        Console.WriteLine(l.ConvertToString());
}


- output -

Oh no! undefined method `blarg'' for nil:NilClass
:0
H:\path\to\my\Program.cs:36:in `Main''

--

I might expect the second line of output (":0") to look something like
":3". Have I missed something in my setup of all the IronRuby classes?
I''ve compiled both my project and IronRuby in debug mode.

Thanks,
benjamin


-- 
Posted via http://www.ruby-forum.com/.

Hello all,

I hate to bump posts, but here I am doing so. I find it surprising that 
no one knows how to determine the line numbers of runtime errors.
Curt''s
suggestion to investigate RubyExceptionData.GetInstance() seemed 
promising, but the information in it''s Backtrace property was not 
correct. Anyone know why this might be the case and how I could go about 
fixing it?

Thanks,
benjamin

p.s.: I''m not sure if this is a mailing list as well as a message
board;
if this message has no context where you''re reading it, see 
http://www.ruby-forum.com/topic/173123
-- 
Posted via http://www.ruby-forum.com/.