Eclipse Community Forums: TMF (Xtext) » DSL validation across multiple files

Help

Home

Home » Modeling » TMF (Xtext) » DSL validation across multiple files

Show: Today's Messages :: Show Polls :: Message Navigator

DSL validation across multiple files [message #1728367]

Sun, 03 April 2016 19:42

Andrey Petrenko

Messages: 8
Registered: March 2016

Junior Member

Hi,

MyModel:
	(imports+=Import)*
	(entities+=Entity)*;

Import:
	'import' importURI=STRING;

Entity:
	'entity' name=ID ('extends' extends=[Entity|ID])?;

For example I want to validate uniqueness of names of entities across multiple dsl files

I've written the following code

	private val names = new HashMap<String, Set<String>>

	@Check
	def checkUniquenessAcrossFiles(MyModel model) {
		names.remove(model.eResource.URI.toString)

		val modelNames = new HashSet<String>
		model.entities.forEach[e|modelNames.add(e.name)]
		names.put(model.eResource.URI.toString, modelNames)
		val allNames = new HashSet<String>
		names.forEach [ k, v |
			v.forEach [ name |
				if (allNames.contains(name)) {
					error("Entity name should be unique", model, MyDSLPackage.Literals.MY_MODEL__ENTITIES)
				} else {
					allNames.add(name)
				}
			]
		]
	}

but the problem here is that this code is executing when I open dsl file, for instance:

I have two files first.dsl & second.dsl with the same content:

entity Base

If I open first.dsl only there is no error messages and they appear only after I open second.dsl

So my question what is the right way to validate multiple dsl files?

Thanks in advance

Report message to a moderator

Re: DSL validation across multiple files [message #1728368 is a reply to message #1728367]

Sun, 03 April 2016 19:47

Karsten Thoms

Messages: 748
Registered: July 2009
Location: Dortmund, Germany

Senior Member

You have to query the scope provider for another element with the same qualified name and same EClass, but from another resource. It should be sufficient to inject the IGlobalScopeProvider.

Note that this should not be a fast check, thus you should use @Check(CheckType.NORMAL). Default is FAST.

HTH,
~Karsten

Need professional support for Xtext, EMF, Eclipse IDE?
Go to: http://devhub.karakun.com
Twitter : @kthoms
Blog : www.karsten-thoms.de

Report message to a moderator