2 * Copyright (c) 2018 Pantheon Technologies, s.r.o. 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.xpath.api;
10 import static java.util.Objects.requireNonNull;
12 import com.google.common.annotations.Beta;
13 import java.util.Objects;
14 import org.eclipse.jdt.annotation.Nullable;
17 * A binary expression formed of a {@link #getLeftExpr()}, an {@link #getOperator()} and a {@link #getRightExpr()}.
19 * @author Robert Varga
22 public abstract sealed class YangBinaryExpr implements YangExpr permits YangBinaryOperator.Expr {
23 private static final long serialVersionUID = 1L;
25 private final YangExpr leftExpr;
26 private final YangExpr rightExpr;
28 YangBinaryExpr(final YangExpr leftExpr, final YangExpr rightExpr) {
29 this.leftExpr = requireNonNull(leftExpr);
30 this.rightExpr = requireNonNull(rightExpr);
33 public final YangExpr getLeftExpr() {
37 public final YangExpr getRightExpr() {
41 public abstract YangBinaryOperator getOperator();
44 public final int hashCode() {
45 return Objects.hash(leftExpr, rightExpr, getOperator());
49 public final boolean equals(final @Nullable Object obj) {
53 if (!(obj instanceof YangBinaryExpr)) {
56 final YangBinaryExpr other = (YangBinaryExpr) obj;
57 return getOperator().equals(other.getOperator()) && leftExpr.equals(other.leftExpr)
58 && rightExpr.equals(other.rightExpr);
62 public final String toString() {
63 return leftExpr.toString() + " " + getOperator() + " " + rightExpr;