import org.checkerframework.framework.testchecker.flowexpression.qual.FlowExp;

public class Canonicalization {

  class LockExample {
    protected final Object myLock = new Object();
    protected @FlowExp("myLock") Object locked;
    protected @FlowExp("this.myLock") Object locked2;

    public @FlowExp("myLock") Object getLocked() {
      return locked;
    }
  }

  class Use {
    final LockExample lockExample1 = new LockExample();
    final Object myLock = new Object();

    @FlowExp("lockExample1.myLock") Object o1 = lockExample1.locked;

    @FlowExp("lockExample1.myLock") Object o2 = lockExample1.locked2;

    @FlowExp("myLock")
    // :: error: (assignment)
    Object o3 = lockExample1.locked;

    @FlowExp("this.myLock")
    // :: error: (assignment)
    Object o4 = lockExample1.locked2;

    @FlowExp("lockExample1.myLock") Object oM1 = lockExample1.getLocked();

    @FlowExp("myLock")
    // :: error: (assignment)
    Object oM2 = lockExample1.getLocked();

    @FlowExp("this.myLock")
    // :: error: (assignment)
    Object oM3 = lockExample1.getLocked();
  }
}