How do I implement a LanguageConfiguration?

[miguellaher]

I'm trying to add indentation rules inside getOnEnterRules() and use it to my team's project but it seems I need to implement LanguageConfiguration. Any idea how to do this?

[angelozerr]

The main idea is to declare on enter rules with declaration mean by using JSON and regexp.

The steps are:

• create a JSON file like https://github.com/eclipse/wildwebdeveloper/blob/1830af96a8f0a6028df12a6bb2faf20b6d6633cb/org.eclipse.wildwebdeveloper.xml/language-configurations/xml/xml.language-configuration.json#L18
• register your JSON file with extension point like https://github.com/eclipse/wildwebdeveloper/blob/1830af96a8f0a6028df12a6bb2faf20b6d6633cb/org.eclipse.wildwebdeveloper.xml/plugin.xml#L152

If you don't want to create a plugin for that you can use the UI preferences to register your JSON language configuration file:

[angelozerr]

If you see your language configuration JSON mapped with your content type in the UI preferences, it means that it is registered. There is no way to check your regular expression.

[angelozerr]

Where can I debug this?

You want to debug TM4E plugin language configuration?

[miguellaher]

Where can I debug this?

You want to debug TM4E plugin language configuration?

Yes. I want to debug the on enter rule that I created. Also, is there any documentation where I can learn how rules function?

[angelozerr]

I suggest that you set a breakpoint at https://github.com/eclipse/tm4e/blob/1e29ca71bb2d13131841b25f1a422402b556820f/org.eclipse.tm4e.languageconfiguration/src/main/java/org/eclipse/tm4e/languageconfiguration/internal/registry/LanguageConfigurationRegistryManager.java#L153 and you see what it happens.

Otherwise I suggest that you start with a simple regexp on enter rules.

[miguellaher]

Ok. Thanks