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import org.checkerframework.checker.nullness.qual.*;
import org.checkerframework.checker.nullness.qual.EnsuresNonNull;
public class AssertAfter {
protected @Nullable String value;
@EnsuresNonNull("value")
public boolean setRepNonNull() {
value = "";
return true;
}
public void plain() {
// :: error: (dereference.of.nullable)
value.toString();
}
public void testAfter() {
setRepNonNull();
value.toString();
}
public void testBefore() {
// :: error: (dereference.of.nullable)
value.toString();
setRepNonNull();
}
public void withCondition(@Nullable String t) {
if (t == null) {
setRepNonNull();
}
// :: error: (dereference.of.nullable)
value.toString();
}
public void inConditionInTrue() {
if (setRepNonNull()) {
value.toString();
} else {
// nothing to do
}
}
// skip-test: Come back when working on improved flow
public void asCondition() {
if (setRepNonNull()) {
} else {
value.toString(); // valid!
}
}
}
// Test that private fields can be mentioned in pre- and post-conditions.
class A {
private @Nullable String privateField = null;
@EnsuresNonNull("privateField")
public void m1() {
privateField = "hello";
}
@RequiresNonNull("privateField")
public void m2() {}
}
class B {
void f() {
A a = new A();
a.m1();
a.m2();
}
}
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