ImmutableContext.java

package com.getperka.flatpack.visitors;
/*
 * #%L
 * FlatPack serialization code
 * %%
 * Copyright (C) 2012 - 2013 Perka Inc.
 * %%
 * 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.
 * #L%
 */

import com.getperka.flatpack.FlatPackVisitor;
import com.getperka.flatpack.ext.Acceptor;
import com.getperka.flatpack.ext.VisitorContext;

/**
 * Disallows all mutations for a single scalar value.
 * 
 * @param <T> the type of data being visited
 */
public class ImmutableContext<T> extends VisitorContext<T> implements Acceptor<T> {
  protected ImmutableContext() {}

  @Override
  public T accept(FlatPackVisitor visitor, T value) {
    getWalker().walk(visitor, value, this);
    return value;
  }
}