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/*
 * Copyright 2016 Objectos, Fábrica de Software LTDA.
 *
 * Licensed 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 br.com.objectos.way.code;

/**
 * @author [email protected] (Marcio Endo)
 */
public abstract class DefaultValueInfo {

  private static final DefaultValueInfo EMPTY = new Empty();

  DefaultValueInfo() {
  }

  public static DefaultValueInfo empty() {
    return EMPTY;
  }

  public abstract  T accept(DefaultValueInfoVisitor visitor, P p);

  private static class Empty extends DefaultValueInfo {

    @Override
    public  T accept(DefaultValueInfoVisitor visitor, P p) {
      return visitor.visitEmpty(p);
    }

  }

}