Friday, June 11, 2010

I have created a new website that covers the MPS/C/Mindstorms stuff I am working on with Bernhard Merkle (and hopefully a larger group of people soon): Among other things it contains a couple of new videos about the C implementation in MPS:
Thursday, June 10, 2010

Xtext Helios Screencast

In case you haven't seen it so yet: the Xtext team recently did a screencast on the Helios Xtext. At about 35 minutes into the video, the new features in Helios are explained. These are most impressive. Congratulations to the team!
Saturday, June 05, 2010

Papyrus team integrates Xtext

Adding to my recent blog post about notational flexibility on Eclipse: the Papyrus team has integrated Xtext with Papyrus. Andreas Graf has blogged about it, incl. a video.
Thursday, June 03, 2010

Notational Flexibility - making progress

In a recent blog post I talked about how MPS can render the same model in different ways, in the same editor. The examples was a statemachine rendered as text and a table. Over in the Eclipse Modeling world, progress is being made in a similar way. Here are some examples.

Jan Koehnlein has worked on, and blogged about editing the same model with a graphical and a textual editor at the same time. Essentially this means that the GMF editor uses Xtext for serializing the model to a file. The typical usage is this: A meta model contains high level structures as well as fine grained details. As you define the GMF editor, you only create editor concepts for the coarse grained stuff. In the Xtext editor, you create a grammar for everything. What this means is this: you can for example edit a model completely textually. You can then open it in the graphical editor, which of course only shows (and lets you edit) the coarse grained elements. However, as you save the model back, the fine grained stuff you had added in the textual editor before is still there - it has been loaded by EMF, *not* modified by the graphical editor, and serialized back. So you can use this setup to "fill in the finer points" into a graphical model - making sure the graphical model is not polluted by all the details.

Nirmal Sasidharan showed me two other interesting things yesterday. One was a demo actually created by Jan where an Xtext editor is embedded into a GMF editor. Imagine you have a UML modeler and you want to edit the (say) set of attributes. You an click on the attribute compartment, and an in-place Xtext editor opens to let you edit the "textual content of a box". Very very nice.

The final thing Nirmal showed me is something he created recently, where he embedded an Xtext editor into an Eclipse Forms application. Imagine a forms-based business app, which some embedded DSL snippets. Very nice!

Notational flexibility, with appropriate tool support, is important. This is what the users of DSLs see and interact with. If you want to make domain experts use DSLs, you have to use *their* syntax.

Glad we're making progress!

back to

This is Markus Voelter's Blog. It is not intended as a replacement for my regular web site, but rather as a companion that contains ideas, thoughts and loose ends.

December 2005 / January 2006 / February 2006 / March 2006 / April 2006 / May 2006 / June 2006 / July 2006 / August 2006 / September 2006 / October 2006 / November 2006 / December 2006 / February 2007 / March 2007 / April 2007 / May 2007 / June 2007 / July 2007 / September 2007 / October 2007 / November 2007 / December 2007 / January 2008 / February 2008 / March 2008 / April 2008 / May 2008 / June 2008 / July 2008 / August 2008 / September 2008 / October 2008 / November 2008 / December 2008 / January 2009 / February 2009 / March 2009 / April 2009 / May 2009 / June 2009 / July 2009 / August 2009 / September 2009 / October 2009 / November 2009 / December 2009 / January 2010 / February 2010 / April 2010 / May 2010 / June 2010 / July 2010 / August 2010 / September 2010 / October 2010 / November 2010 / December 2010 / January 2011 / March 2011 / April 2011 / May 2011 / June 2011 / July 2011 / October 2011 / November 2011 / December 2011 / January 2012 / February 2012 / October 2012 / January 2013 /

You can get an atom feed for this blog.