/**
 * Copyright (c) 2008, http://www.snakeyaml.org
 *
 * 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 org.yaml.snakeyaml.events;

import org.yaml.snakeyaml.error.Mark;

/**
 * Marks the inclusion of a previously anchored node.
 */
public final class AliasEvent extends NodeEvent {
    public AliasEvent(String anchor, Mark startMark, Mark endMark) {
        super(anchor, startMark, endMark);
        if(anchor == null) throw new NullPointerException("anchor is not specified for alias");
    }

    @Override
    public Event.ID getEventId() {
        return ID.Alias;
    }
}
