How do I load all documents in a (nested) directory structure

[BaukeL]

In the snippet below only one document is added tot the workspace. How can I do something similar by providing a directory name? Based on this directory name all files with applicable extensions should then give a list of documents to be passed to the DocumentBuilder. Or is there another way this should work?

export async function extractDocument<T extends AstNode>(fileName: string, extensions: readonly string[], services: LangiumCoreServices): Promise<LangiumDocument<T>> {

//....
    const document = await services.shared.workspace.LangiumDocuments.getOrCreateDocument(URI.file(path.resolve(fileName)));
    await services.shared.workspace.DocumentBuilder.build([document], { validation: true });
//....
}

[msujew]

Hey @BaukeL,

there are two ways to go about this:

1. As you've outlined, iterate through all the files in a directory via the fs import and create documents for all of them and pass them into the DocumentBuilder.build method.
2. Use the WorkspaceManager#initializeWorkspace method and pass in an array of WorkspaceFolder. It calls DocumentBuilder.build internally. See:
   

   langium/examples/domainmodel/src/cli/cli-util.ts

   Lines 45 to 57 in 3f9de4c

   	export async function setRootFolder(fileName: string, services: LangiumCoreServices, root?: string): Promise<void> {
   	if (!root) {
   	root = path.dirname(fileName);
   	}
   	if (!path.isAbsolute(root)) {
   	root = path.resolve(process.cwd(), root);
   	}
   	const folders: WorkspaceFolder[] = [{
   	name: path.basename(root),
   	uri: URI.file(root).toString()
   	}];
   	await services.shared.workspace.WorkspaceManager.initializeWorkspace(folders);
   	}