Overriding.java

import org.checkerframework.checker.lock.qual.*;
import org.checkerframework.dataflow.qual.*;

public class Overriding {

    class SuperClass {
        protected Object a, b, c;

        @Holding("a")
        void guardedByOne() {}

        @Holding({"a", "b"})
        void guardedByTwo() {}

        @Holding({"a", "b", "c"})
        void guardedByThree() {}

        @ReleasesNoLocks
        void rnlMethod() {
            //:: error: (method.guarantee.violated)
            mrlMethod();
            rnlMethod();
            implicitRnlMethod();
            lfMethod();
        }

        void implicitRnlMethod() {
            //:: error: (method.guarantee.violated)
            mrlMethod();
            rnlMethod();
            implicitRnlMethod();
            lfMethod();
        }

        @LockingFree
        void lfMethod() {
            //:: error: (method.guarantee.violated)
            mrlMethod();
            //:: error: (method.guarantee.violated)
            rnlMethod();
            //:: error: (method.guarantee.violated)
            implicitRnlMethod();
            lfMethod();
        }

        @MayReleaseLocks
        void mrlMethod() {
            mrlMethod();
            rnlMethod();
            implicitRnlMethod();
            lfMethod();
        }

        @ReleasesNoLocks
        void rnlMethod2() {}

        void implicitRnlMethod2() {}

        @LockingFree
        void lfMethod2() {}

        @MayReleaseLocks
        void mrlMethod2() {}

        @ReleasesNoLocks
        void rnlMethod3() {}

        void implicitRnlMethod3() {}

        @LockingFree
        void lfMethod3() {}
    }

    class SubClass extends SuperClass {
        @Holding({"a", "b"}) // error
        @Override
        //:: error: (contracts.precondition.override.invalid)
        void guardedByOne() {}

        @Holding({"a", "b"})
        @Override
        void guardedByTwo() {}

        @Holding({"a", "b"})
        @Override
        void guardedByThree() {}

        @MayReleaseLocks
        @Override
        //:: error: (override.sideeffect.invalid)
        void rnlMethod() {}

        @MayReleaseLocks
        @Override
        //:: error: (override.sideeffect.invalid)
        void implicitRnlMethod() {}

        @ReleasesNoLocks
        @Override
        //:: error: (override.sideeffect.invalid)
        void lfMethod() {}

        @MayReleaseLocks
        @Override
        void mrlMethod() {}

        @ReleasesNoLocks
        @Override
        void rnlMethod2() {}

        @Override
        void implicitRnlMethod2() {}

        @LockingFree
        @Override
        void lfMethod2() {}

        @ReleasesNoLocks
        @Override
        void mrlMethod2() {}

        @LockingFree
        @Override
        void rnlMethod3() {}

        @LockingFree
        @Override
        void implicitRnlMethod3() {}

        @SideEffectFree
        @Override
        void lfMethod3() {}
    }

    // Test overriding @Holding with JCIP @GuardedBy.
    class SubClassJcip extends SuperClass {
        @net.jcip.annotations.GuardedBy({"a", "b"}) @Override
        //:: error: (contracts.precondition.override.invalid)
        void guardedByOne() {}

        @net.jcip.annotations.GuardedBy({"a", "b"}) @Override
        void guardedByTwo() {}

        @net.jcip.annotations.GuardedBy({"a", "b"}) @Override
        void guardedByThree() {}
    }

    // Test overriding @Holding with Javax @GuardedBy.
    class SubClassJavax extends SuperClass {
        @javax.annotation.concurrent.GuardedBy({"a", "b"}) @Override
        //:: error: (contracts.precondition.override.invalid)
        void guardedByOne() {}

        @javax.annotation.concurrent.GuardedBy({"a", "b"}) @Override
        void guardedByTwo() {}

        @javax.annotation.concurrent.GuardedBy({"a", "b"}) @Override
        void guardedByThree() {}
    }
}