2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.yangtools.yang.model.api.stmt;
10 import static com.google.common.base.Verify.verifyNotNull;
12 import com.google.common.annotations.Beta;
14 import java.util.function.Predicate;
15 import org.eclipse.jdt.annotation.NonNull;
16 import org.opendaylight.yangtools.yang.common.QName;
17 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
20 * Represents YANG if-feature statement. The "if-feature" statement makes its parent statement conditional.
22 public interface IfFeatureStatement extends DeclaredStatement<Predicate<Set<QName>>> {
24 * In YANG 1.1 (RFC7950) implementation of IfFeatureStatement, the argument is a boolean expression over feature
25 * names defined by "feature" statements. Hence, add implementation to return a predicate on a collection
26 * of features against which to evaluate.
28 * @return Predicate on a collection of QNames against which to evaluate
31 default @NonNull Predicate<Set<QName>> getIfFeaturePredicate() {
32 // FIXME: YANGTOOLS-908: verifyNotNull() should not be needed here
33 return verifyNotNull(argument());