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import org.checkerframework.checker.lock.qual.EnsuresLockHeld;
import org.checkerframework.checker.lock.qual.EnsuresLockHeldIf;
import org.checkerframework.checker.lock.qual.GuardedBy;
import org.checkerframework.checker.lock.qual.Holding;
class MyReentrantLock {
final Object myfield = new Object();
@Holding("myfield")
@EnsuresLockHeld("this")
void lock() {
this.lock();
}
@EnsuresLockHeld("this")
void lock2() {
this.lock2();
}
@Holding("myfield")
void notLock() {}
boolean b = false;
@EnsuresLockHeldIf(expression = "this", result = true)
boolean tryLock() {
if (b) {
lock2();
return true;
}
return false;
}
}
class ThisPostCondition {
final MyReentrantLock myLock = new MyReentrantLock();
@GuardedBy("myLock") Bar bar = new Bar();
@Holding("myLock.myfield")
void lockTheLock() {
myLock.lock();
bar.field.toString();
}
void lockTheLock2() {
myLock.lock2();
bar.field.toString();
}
void doNotLock() {
// :: error: (lock.not.held)
bar.field.toString();
}
void tryTryLock() {
if (myLock.tryLock()) {
bar.field.toString();
} else {
// :: error: (lock.not.held)
bar.field.toString();
}
}
}
class Bar {
Object field;
}
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