/*
* 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 opennlp.tools.parser;
import java.util.Set;
/**
* Interface for encoding the head rules associated with parsing.
*/
public interface HeadRules {
/**
* Returns the head constituent for the specified constituents of the specified type.
*
* @param constituents The constituents which make up a constituent of the specified type.
* @param type The type of a constituent which is made up of the specified constituents.
* @return The constituent which is the head.
*/
Parse getHead(Parse[] constituents, String type);
/**
* Returns the set of punctuation tags. Attachment decisions for these tags will not be modeled.
*
* @return the set of punctuation tags.
*/
Set<String> getPunctuationTags();
}