src/main/java/net/hydromatic/linq4j/expressions/LabelStatement.java

/*
// Licensed to Julian Hyde under one or more contributor license
// agreements. See the NOTICE file distributed with this work for
// additional information regarding copyright ownership.
//
// Julian Hyde 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 net.hydromatic.linq4j.expressions;

/**
 * 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(Visitor visitor) {
    return visitor.visit(this);
  }
}

// End LabelStatement.java