Use instanceof expression for yang-xpath-api equality
[yangtools.git] / xpath / yang-xpath-api / src / main / java / org / opendaylight / yangtools / yang / xpath / api / YangNaryExpr.java
1 /*
2  * Copyright (c) 2018 Pantheon Technologies, s.r.o.  All rights reserved.
3  *
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
7  */
8 package org.opendaylight.yangtools.yang.xpath.api;
9
10 import static java.util.Objects.requireNonNull;
11
12 import com.google.common.annotations.Beta;
13 import com.google.common.base.MoreObjects;
14 import com.google.common.collect.ImmutableSet;
15 import java.util.Objects;
16 import java.util.Set;
17 import org.eclipse.jdt.annotation.Nullable;
18
19 /**
20  * A {@link YangExpr} combining a {@link YangNaryOperator} with a set of expressions.
21  */
22 @Beta
23 public final class YangNaryExpr implements YangExpr {
24     private static final long serialVersionUID = 1L;
25
26     private final YangNaryOperator operator;
27     private final ImmutableSet<YangExpr> expressions;
28
29     YangNaryExpr(final YangNaryOperator operator, final ImmutableSet<YangExpr> expressions) {
30         this.operator = requireNonNull(operator);
31         this.expressions = requireNonNull(expressions);
32     }
33
34     public Set<YangExpr> getExpressions() {
35         return expressions;
36     }
37
38     public YangNaryOperator getOperator() {
39         return operator;
40     }
41
42     @Override
43     public int hashCode() {
44         return Objects.hash(getOperator(), expressions);
45     }
46
47     @Override
48     public boolean equals(final @Nullable Object obj) {
49         return this == obj || obj instanceof YangNaryExpr other && getOperator().equals(other.getOperator())
50             && expressions.equals(other.expressions);
51     }
52
53     @Override
54     public String toString() {
55         return MoreObjects.toStringHelper(YangNaryExpr.class)
56                 .add("operator", operator)
57                 .add("expressions", expressions)
58                 .toString();
59     }
60 }