com.hazelcast.org.apache.calcite.linq4j.tree.WhileStatement 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 "while" statement.
*/
public class WhileStatement extends Statement {
public final Expression condition;
public final Statement body;
public WhileStatement(Expression condition, Statement body) {
super(ExpressionType.While, Void.TYPE);
assert condition != null : "condition should not be null";
assert body != null : "body should not be null";
this.condition = condition;
this.body = body;
}
@Override public Statement accept(Shuttle shuttle) {
shuttle = shuttle.preVisit(this);
final Expression condition1 = condition.accept(shuttle);
final Statement body1 = body.accept(shuttle);
return shuttle.visit(this, condition1, body1);
}
@Override public R accept(Visitor visitor) {
return visitor.visit(this);
}
@Override void accept0(ExpressionWriter writer) {
writer.append("while (").append(condition).append(") ").append(
Blocks.toBlock(body));
}
@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;
}
WhileStatement that = (WhileStatement) o;
if (!body.equals(that.body)) {
return false;
}
if (!condition.equals(that.condition)) {
return false;
}
return true;
}
@Override public int hashCode() {
return Objects.hash(nodeType, type, condition, body);
}
}
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