com.hazelcast.org.apache.calcite.linq4j.tree.LabelStatement Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to you under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.org.apache.calcite.linq4j.tree;
import com.hazelcast.org.checkerframework.checker.nullness.qual.Nullable;
import java.util.Objects;
/**
* Represents a label, which can be put in any {@link Expression} context. If it
* is jumped to, it will get the value provided by the corresponding
* {@link GotoStatement}. Otherwise, it receives the value in
* {@link #defaultValue}. If the Type equals {@link Void}, no value should be
* provided.
*/
public class LabelStatement extends Statement {
public final Expression defaultValue;
public LabelStatement(Expression defaultValue, ExpressionType nodeType) {
super(nodeType, Void.TYPE);
this.defaultValue = defaultValue;
}
@Override public LabelStatement accept(Shuttle shuttle) {
return shuttle.visit(this);
}
@Override public R accept(Visitor visitor) {
return visitor.visit(this);
}
@Override public boolean equals(@Nullable Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
if (!super.equals(o)) {
return false;
}
LabelStatement that = (LabelStatement) o;
if (defaultValue != null ? !defaultValue.equals(that.defaultValue) : that
.defaultValue != null) {
return false;
}
return true;
}
@Override public int hashCode() {
return Objects.hash(nodeType, type, defaultValue);
}
}
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