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Question about B3 meta-model and B3 language [message #606957]

Mon, 10 May 2010 15:45

jeremie

Messages: 233
Registered: April 2010

Senior Member

For my language, I begin to write all my grammar rules in xtext,
This grammar generate an ecore file which is the meta-model of my grammar.
But, for the b3, I have the impression that the meta-model (ecore file) was created first. and no one rule in the grammar generate an ecore class.
(all rule in the grammar return an EObject of the meta-model).

Why have you chosen this method? What are the advantages of this method?

Jérémie

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Re: Question about B3 meta-model and B3 language [message #606965 is a reply to message #606957]

Mon, 10 May 2010 16:08

Henrik Lindberg

Messages: 2509
Registered: July 2009

Senior Member

I started by generating the model from the grammar. This is good as it
is a convenient way to explore ways to write the grammar.

When having a decent grammar, the model becomes API, and you don't want
it to change in mysterious ways when doing "bad" things in the grammar.

You also have a lot more control over the grammar that way.

- henrik

On 5/10/10 5:45 PM, jeremie wrote:
> For my language, I begin to write all my grammar rules in xtext,
> This grammar generate an ecore file which is the meta-model of my grammar.
> But, for the b3, I have the impression that the meta-model (ecore file)
> was created first. and no one rule in the grammar generate an ecore class.
> (all rule in the grammar return an EObject of the meta-model).
>
> Why have you chosen this method? What are the advantages of this method?
>
> Jérémie
>

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