I am using Eclipse for DSL development but I have a problem with it. I am using Xtext and Xtend to develop my DSL. But everytime I generate the Xtext artifacts from my xtext file, code assist stops working for all xtend files.
So far I tried to change my Code Assist Java editor settings due to some google search.
A workaround is to delete the .settings folder for the project and import the whole project again. But In my opinion this is not an acceptable workaround.
Thanks for your help!
This are my current settings
You have to add your customized scopeproviders/ proposalproviders to have custom content assist in your dsl.
Xtext 2.9 scope provider
Related
The Eclipse Plugin I am currently working on required me to import into the workspace and edit some existing source code in org.eclipse.jface.text.source.projection
because the method I needed to change happened to be private.
Now I am wondering: Can this change be somehow packaged into my plugin? Will I even be able to export this plugin and offer it for people to use?
I know AspectJ weaving would be an option but I wonder if there is another solution.
I am trying to implement the package/import mechanism into my DSL.
It works perfectly when I have a single file but not with different files.
Even the 15 Minutes Tutorial doesn't work for me. I don't manage to make it work even by coping/pasting the code from the website. I only modify the grammar file.
I tried to investigate this problem further, but found nothing relevant on the Internet.
I noticed that the resource set contains only the current files edited, not the other files present in the project. To see that, I add this line of code in the validator and the scope provider: println(context.eResource.resourceSet.resources).
From my understanding of how XText works, I expected to get one resource for each file present inside the project.
When I create the project, I usually create a "General Project". But I got the same issue with a Java one.
Here my configuration:
macOS Mojave, v. 10.14.1
Eclipse DSL Tools v. 2018-09 (4.9.0)
Xtext v.2.16.0v20181203-0514
JDK 1.8
Thanks a lot for your help.
As suggested by #ChristianDietrich in his comment, the project build was off. After turning it on, the import works perfectly.
I have built an Xtext based editor for our DSL which works fine, but we get an out of memory error while the workspace is building or when we force a project cleaning. Our DSL plug-in is used in conjunction with the Eclipse CDT to build microcontrollers test programs. A test program project is made of C++ files and ".xxx" files for which I have built the DSL editor. The out of memory error occurs when the test program project contains at least one large ".xxx" file (~300 Mbyte). We don't even open this large file, we simply clean the project and the memory error occurs.
This seems to be an Xtext indexer issue. Is there a way to tell the Xtext indexer to ignore ".xxx" files located in a particular folder of the project? I have read several times the Scoping chapter of the excellent "Implementing DSLs with Xtext and Xtend" from Lorenzo Bettini, but did not find any solution to this issue. Can you help me, please?
the extension points for this are org.eclipse.xtext.resource.IResourceServiceProvider.canHandle(URI) or org.eclipse.xtext.ui.resource.IResourceUIServiceProvider.canHandle(URI, IStorage)
I intend to customize Openmeetings and am wondering if there is a GUI editor available for Openlaszlo.
There was apparently a plugin called IDE4Lazlo, mentioned both at IBM and Eclipse.org, but both links are dead. If the plugin has been definitely pulled, then is there a way to at least preview layouts?
The IDE4Laszlo is on old IBM project, which has not been maintained for a long time (since 2005/2006). Laszlo had been working on an Eclipse based plugin in 2008, which was unfortunately never released.
Spket works, but compared to IDEs like Flash Builder the functionality is relatively limited, since the IDE is not capable of scanning your application files to recognize new classes and methods.
An option is to use an XML editor with XSD support. Sebastian Wagner of OpenMeetings has created a build script which generates an XSD schema file from the OpenLaszlo classes and the custom classes in your application. The source code can be found here:
http://code.google.com/p/openlaszlo-schemagenerator/
There are two Eclipse IDE plugins that support OpenLaszlo, IDE4Laszlo and the more recent Spket.
I created a new PLAYN project based on the "Generating a skeleton project with Eclipse" instructions on the wiki
( found here: http://code.google.com/p/playn/wiki/GettingStarted#Generating_a_skeleton_project_with_Eclipse )
Everything was set up correctly but Eclipse doesn't recognize it as a java project so I lose the syntax checking, content assist, etc (I get run-time error dialog box when content assist tries to help) for java.
I get "compilation unit is not on the build path of a java project" followed by "The 'org.eclipse.mylyn.java.ui.javaAllCompletionProposalComputer' proposal computer from the 'org.eclipse.mylyn.java.ui' plug-in did not complete normally...".
Did I miss a step? Is there a way to add it to the project?
I tried editing the .project to add a java nature but that really messed up the project structure constructed by maven. (based on How do Java and Maven builders work together in eclipse?)
I tried adding a java builder to the project properties and looked adding a plug-in dependency in Maven but couldn't figure that out (I'm still learning Maven).
thanks.
Make sure you are writing code in the [project-name]-core Eclipse project rather than the [project-name] Eclipse project.
Searching around internet I found several reasons for this error. In my case the problem was that the project's nature was not Java.
To fix that:
close the project
edit file .project on project's root
Add the following line to section:
org.eclipse.jdt.core.javanature
Done. Open your project and code assist works correctly now.