Hi all,
I am in the process of evaluating XText for use in my product. Before I
start answering questions, I'd like to thank all the XText committers and
community for building such a cool technology. My initial experience with
XText has been very positive. Not only does the sample work flawlessly, I
can easily get my own dsl editor up and running within a few days. It was
very impressive.
During my evaluation, I came across with a few things that I cannot quite
understand. I am hoping you can help me figure out the answers. If this
is not the right forum to ask these questions, please let me know where I
should send the questions.
I am using XText 0.8.0, and I am interested in some of the new features
for this release. The "New and Noteworthy" indicated that there is a new
builder infrastructure, and all files of XText languages are indexed by
this infrastructure. Can you explain to me how this infrastructure work?
How is indexing done, and what is the relationship between the XText
project support and the indexing (if any?) ? Where can I find some
design docs on how this works? Or, if you can point me to the code to
start looking at this, it will be great.
Secondly, one of my requirements is to embed the XText editor into a
multipage editor. I experimented with this by programmatically creating
the XText editor in my multipage editor, and got the editor to show up ok.
However, none of the XText actions, like format, open declaration, etc in
the context menu. I added the same set of actions by adding these actions
in my own plugin.xml. The actions will show up, but will not run, because
some of the actions expect the calling editor is an XTextEditor. The
actions have hard-coded casts to XTextEditor, and result
ClassCastException when they are run. I think the problem is that the
XTextEditor is never designed to be hosted in other editors,and therefore
the actions do not work. What are you thoughts on hosting the XTextEditor
in a multipage editor? Is this a supported scenario?
Finally, the language that I am dealing with is really a combination of
two sub-languages, much similar to Javascript in a JSP. I need the editor
to understand a different set of grammar depending on what the user is
writing in an application file. For example, if the user is within some
boundaries, the editor will interpret the code using a set of grammar
rules, everything else outside that boundary will be treated as comments.
If the user switches to another part of the application, the editor will
switch grammar on the fly, and will interpret the code differently, i.e.
building a different AST tree, etc. The question is, is it possible to
switch grammar on the fly, maybe switching grammar if some tokens are
found?
Thanks a lot for your help in this.
Samantha
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