drop down menu does not contain a formatter entry

[jimp02]

The drop down menu does not contain a formatter entry for format-astyle. The problem seems to be you are not registering it as a formatter with vscode.languages.registerDocumentFormattingEditProvider(language, formatter).

Following is an example from the VS Code AStyle extension. It needs to be added to your extension at the appropriate place:

// this method is called when your extension is activated
// your extension is activated the very first time the command is executed
function activate(context) {
let formatter = new AstyleFormatter();
let additionalLanguages = vscode.workspace.getConfiguration('astyle')['additional_languages'] || [];

["c", "cpp", "objective-c", "csharp", "java"].concat(additionalLanguages).forEach(function (language) {
    let config = vscode.workspace.getConfiguration('astyle')[language];

    if (config && !config.enable) {
        return;
    }

    let disposable = vscode.languages.registerDocumentFormattingEditProvider(language, formatter);
    context.subscriptions.push(disposable);
});

context.subscriptions.push(formatter);

}