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 java.util.Optional;
13 import org.eclipse.jdt.annotation.NonNull;
14 import org.eclipse.jdt.annotation.Nullable;
15 import org.opendaylight.yangtools.yang.model.api.type.PatternConstraint;
17 public interface PatternStatement extends ConstrainedDocumentedDeclaredStatement<PatternConstraint> {
18 default @NonNull PatternConstraint getValue() {
19 // FIXME: YANGTOOLS-908: verifyNotNull() should not be needed here
20 return verifyNotNull(argument());
24 * Return a modifier statement, if present. In RFC6020 semantics, there are no modifiers and this methods always
27 * @return modifier statement, nul if not present.
29 default @Nullable ModifierStatement getModifierStatement() {
30 final Optional<ModifierStatement> opt = findFirstDeclaredSubstatement(ModifierStatement.class);
31 return opt.isPresent() ? opt.get() : null;