Xtend in IntelliJ IDEA not generate file in src-gen

Question

I combine Xtext and Xtend. In project, where I write code for my DSL, Xtext work but XTend not generate file in src-gen (this is sources root on: <project-root>/src-gen/). I have this code in function doGenerate

override void doGenerate(Resource resource, IFileSystemAccess2 fsa, IGeneratorContext context) {
        fsa.generateFile("a.txt",'a')
    }

Src-gen is always empty. In eclipse this work. How can I generate file in IntelliJ IDEA or how can I fix this problem. I run in gradle.

Answer 1

I run gradle task runIdea. I create Java project without any SDK. When project is created, I add "file.mydsl" in src folder. Then I need change facet settings. I open project structure dialog (Ctrl+Shift+Alt+S), in the left-hand panel, click Facets, choose + icon and add DSL facet. Then apply and code is work. In src-gen create a file "a.txt".