import org.eclipse.xtext.GrammarUtil;
import org.eclipse.xtext.IGrammarAccess;

import com.google.inject.Injector;

public class Main {
	
	public static void main(String[] args) {
		Injector injector = new MyDslStandaloneSetup().createInjectorAndDoEMFRegistration();
		IGrammarAccess ga = injector.getInstance(IGrammarAccess.class);
		System.out.println(GrammarUtil.getAllKeywords(ga.getGrammar()));
	}

}

@SuppressWarnings("restriction")
public class MyDslValueSerializer extends ValueSerializer {
	public String serializeAssignedValue(EObject context, RuleCall ruleCall, Object value, INode node, Acceptor errors) {
		String name = ruleCall.getRule().getName();
		if ("MyID".equals(name))  {
                        // passing 'null' node, to force use of value converter
			return super.serializeAssignedValue(context, ruleCall, value, null, errors);
		} else {
			return super.serializeAssignedValue(context, ruleCall, value, node, errors);
		}
	}
}