@SuppressWarnings("unchecked")
    public Violation maybeViolation(final JApiCompatibility member) {
        if (!member.isBinaryCompatible()) {
            if ((member instanceof JApiClass) && (member.getCompatibilityChanges().isEmpty())) {
                // A member of the class breaks binary compatibility.
                // That will be handled when the member is passed to `maybeViolation`.
                return null;
            }

public class NewIncubatingAPIRule extends AbstractGradleViolationRule {

    public NewIncubatingAPIRule(Map<String, Object> params) {
        super(params);
    }

    @Override
    public Violation maybeViolation(final JApiCompatibility member) {
        if (member instanceof JApiMethod || member instanceof JApiField || member instanceof JApiClass) {
            if (!isIncubating((JApiHasAnnotations) member)) {

        super(params)
        final List<String> publicApiPatterns = (List<String>)params['publicApiPatterns'];
        this.publicApiPatterns = publicApiPatterns.collect { Pattern.compile(it) }
    }

    Violation maybeViolation(final JApiCompatibility member) {
        if (!(member instanceof JApiClass)) {
            return null
        }

        if (!changed(member)) {
            return null
        }

        noViolation(rule)
    }

    def 'adding an #type interface can be reported'() {
        given:
        newBase.addInterface(interfaces[type])

        when:
        Violation violation = rule.maybeViolation(apiClass)

        then:
        violation.humanExplanation.contains(result)

        where:
        type         | result
        'internal'   | "\"${replaceAsInternal(InternalInterface.name)}\""

public class IncubatingMissingRule extends AbstractGradleViolationRule {

    public IncubatingMissingRule(Map<String, Object> params) {
        super(params);
    }

    @Override
    public Violation maybeViolation(final JApiCompatibility member) {
        if (member instanceof JApiMethod || member instanceof JApiField || member instanceof JApiClass || member instanceof JApiConstructor) {

    JApiClass apiClass = Stub(JApiClass)

    def setup() {
        instanceScopedPool.appendSystemPath()
    }

    void noViolation(def rule) {
        assert rule.maybeViolation(apiClass) == null
    }

    Map getInitializationParams() {
        return [acceptedApiChanges: [:],
            publicApiPatterns: ['gradlebuild[.]binarycompatibility[.]rules.[^.]+'],

@CompileStatic
class KotlinModifiersBreakingChangeRule extends AbstractGradleViolationRule {

    KotlinModifiersBreakingChangeRule(Map<String, Object> params) {
        super(params)
    }

    @Override
    Violation maybeViolation(JApiCompatibility member) {

        if (isNewOrRemoved(member) || !(member instanceof JApiMethod)) {
            return null
        }

        JApiMethod method = (JApiMethod) member

    public SinceAnnotationMissingRule(Map<String, Object> params) {
        super(params);
    }

    @Override
    public Violation maybeViolation(final JApiCompatibility member) {

        if (shouldSkipViolationCheckFor(member) || getRepository().isSince(getCurrentVersion(), member)) {
            return null;
        }

        given:
        apiClass.oldClass >> Optional.of(classes['OldBase'])
        apiClass.newClass >> Optional.of(classes['NewBase'])

        when:
        Violation violation = rule.maybeViolation(apiClass)

        then:
        violation.humanExplanation.contains('SuperInternal.publicMethod()')
        !violation.humanExplanation.contains('SuperInternal.privateMethod()')
    }

    NullabilityBreakingChangesRule(Map<String, Object> params) {
        super(params)
    }

    @Override
    Violation maybeViolation(JApiCompatibility member) {

        if (isNewOrRemoved(member)) {
            return null
        }

        List<String> warnings = []
        List<String> errors = []