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How to provide a valid reference of an imported method [message #791759]

Mon, 06 February 2012 08:23

rahul kumar

Messages: 4
Registered: July 2009

Junior Member

I have a grammar that uses importURI statement to import the required DSLs and The DSLs have almost same informations. e.g.

in myFirst.mydsl:

entity student{
roll 1;
name "rahul"
}

in mySecond.mydsl:

entity student{
roll 2;
name "rahul"
}

Then in my another dsl I want to use the student of myFirst.mydsl

So I write something like:

import "mySecond.mydsl"
import "myFirst.mydsl"
colEntity college1{
enrolledStudent : student // I am considering enrolledStudent as String
}

But in this case I can get the student reference only from mySecond.mydsl and I need to change the import order to get the reference from myFirst.dsl. This creates a problem if want students from both the dsl.

Isn't there any way by which I can refer to both the students in the same file. i.e. I want something like:

import "mySecond.mydsl" as mySecond
import "myFirst.mydsl" as myFirst
colEntity college1{
enrolledStudent : myFirst.student
}

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Re: How to provide a valid reference of an imported method [message #791816 is a reply to message #791759]

Mon, 06 February 2012 09:47

Meinte Boersma

Messages: 434
Registered: July 2009
Location: Leiden, Netherlands

Senior Member

You'll have to customize scoping for this. You can't use any of the out-of-the-box scoping fragments because the qualified names depend on the particular import statements in a DSL file, so they're not constant throughout. It's not very difficult to do this: e.g., the Xtext grammar language has the same construct. You can also look at how it did this here.

Xtext blogs: executable models...again? | workshop material | custom scoping with Xtend

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