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import org.checkerframework.checker.nullness.qual.EnsuresNonNull;
import org.checkerframework.checker.nullness.qual.Nullable;
import org.checkerframework.checker.nullness.qual.RequiresNonNull;
import org.checkerframework.dataflow.qual.Pure;
// @skip-test
public class Issue2013 {
static class Super {
private @Nullable String name = null;
@EnsuresNonNull("name()")
// :: error: (contracts.postcondition.not.satisfied)
void ensureNameNonNull() {
name = "name";
}
@RequiresNonNull("name()")
void requiresNameNonNull() {
name().equals("name");
}
@Pure
@Nullable String name() {
return name;
}
}
static class Sub extends Super {
@Nullable String subname = null;
@Override
// :: error: (contracts.postcondition.not.satisfied)
void ensureNameNonNull() {
super.ensureNameNonNull();
subname = "Sub";
}
public static boolean flag;
@Override
@RequiresNonNull("name()")
void requiresNameNonNull() {
if (flag) {
name().toString();
} else {
super.requiresNameNonNull();
}
}
@Override
@Nullable String name() {
return subname;
}
void use() {
if (super.name() != null) {
// :: error: (contracts.precondition.not.satisfied)
requiresNameNonNull();
}
if (this.name() != null) {
requiresNameNonNull();
}
if (super.name() != null) {
// :: error: (contracts.precondition.not.satisfied)
super.requiresNameNonNull();
}
if (this.name() != null) {
super.requiresNameNonNull();
}
super.ensureNameNonNull();
// :: error: (contracts.precondition.not.satisfied)
requiresNameNonNull();
super.ensureNameNonNull();
// :: error: (contracts.precondition.not.satisfied)
super.requiresNameNonNull();
ensureNameNonNull();
super.requiresNameNonNull();
ensureNameNonNull();
requiresNameNonNull();
}
}
void method(Super superObj) {
if (superObj.name() != null) {
superObj.requiresNameNonNull();
}
superObj.ensureNameNonNull();
superObj.requiresNameNonNull();
}
void method2(Sub subObj) {
if (subObj.name() != null) {
subObj.requiresNameNonNull();
}
if (subObj.name() != null) {
subObj.requiresNameNonNull();
}
}
}
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