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import java.util.LinkedList;
import java.util.prefs.*;
import org.checkerframework.checker.interning.qual.Interned;
import org.checkerframework.checker.interning.qual.UsesObjectEquals;
public class UsesObjectEqualsTest {
public @UsesObjectEquals class A {
public A() {}
}
@UsesObjectEquals
class B extends A {}
// :: error: (overrides.equals)
class B2 extends A {
@Override
public boolean equals(Object o) {
return super.equals(o);
}
}
// changed to inherited, no (superclass.annotated) warning
class C extends A {}
class D {}
@UsesObjectEquals
// :: error: (superclass.notannotated)
class E extends D {}
@UsesObjectEquals
// :: error: (overrides.equals)
class TestEquals {
@org.checkerframework.dataflow.qual.Pure
public boolean equals(Object o) {
return true;
}
}
class TestComparison {
public void comp(@Interned Object o, A a1, A a2) {
if (a1 == a2) {
System.out.println("one");
}
if (a1 == o) {
System.out.println("two");
}
if (o == a1) {
System.out.println("three");
}
}
}
@UsesObjectEquals
class ExtendsInner1 extends UsesObjectEqualsTest.A {}
class ExtendsInner2 extends UsesObjectEqualsTest.A {}
class MyList extends LinkedList {}
}
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