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Debug support for DSL in Xtext [message #555713]

Fri, 27 August 2010 18:53

No real name

Messages: 101
Registered: August 2010

Senior Member

Hi,

I'm a new user of a Xtext/Eclipse. I'm reading through the documentation. I'm interested in creating a small domain-specific language. Let's say I defined my language and write a code generator for this with Xtext. For example, say 1 line in my DSL executes 10 lines of C/C++ code. I can use the existing C/C++ development tools for building/running/debugging the generated code.

My question is regarding debugging - single stepping through my DSL. Since the generator is generating C/C++ code, I can single step that in gdb. However, is it possible or is thre an interface where I can do the following.

1. I put a break point in my DSL. I say single-step. That executes the 10 lines of code and then moves the cursor position down do the next line and stops.

Thus, I want to single step through my DSL and not the generated code. Is there some way to do this in Etext/Eclipse?

Thank you for any pointers/help.

[Updated on: Fri, 27 August 2010 18:55]

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Re: Debug support for DSL in Xtext [message #555716 is a reply to message #555713]

Fri, 27 August 2010 19:14

Alexander Nittka

Messages: 1193
Registered: July 2009

Senior Member

Hi,

I cannot give you a definite answer. It may be possible, but it is not supported out of the box (how should it) and also it will very probably be hard to implement.

Basically, your DSL has nothing to do with the generated code. The model file does not know what you do with it (after all, nothing prevents you from having hundreds of different generators, processing the file) and the generated code does not know where it is coming from (it may well have been entered by hand).

Alex

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Re: Debug support for DSL in Xtext [message #555720 is a reply to message #555716]

Fri, 27 August 2010 19:30

Ed Willink

Messages: 7655
Registered: July 2009

Senior Member

Hi

This is a standard problem well-supported by good C tooling.

When generating C/C++ just output lots of #line directives so that
the source code stepper can identify the user perspective of the source
line.

Regards

Ed Willink

On 27/08/2010 20:14, Alexander Nittka wrote:
> Hi,
>
> I cannot give you a definite answer. It may be possible, but it is not
> supported out of the box (how should it) and also it will very probably
> be hard to implement.
>
> Basically, your DSL has nothing to do with the generated code. The model
> file does not know what you do with it (after all, nothing prevents you
> from having hundreds of different generators, processing the file) and
> the generated code does not know where it is coming from (it may well
> have been entered by hand).
>
> Alex

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Re: Debug support for DSL in Xtext [message #1059859 is a reply to message #555713]

Wed, 22 May 2013 00:36

April Dai

Messages: 3
Registered: April 2013

Junior Member

Hi,

We are facing the same issue, we have defined a dsl, and it is getting translated to a legacy language, would like to provide debugging support, but the execution of one line in dsl may result in multiple lines in the legacy code...

Were you able to find a solution for your problem?

Thanks,

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