/*
* Copyright (c) 2013, the Dart project authors.
*
* Licensed under the Eclipse Public License v1.0 (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.eclipse.org/legal/epl-v10.html
*
* 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 com.google.dart.engine.internal.cache;
import com.google.dart.engine.source.Source;
/**
* Instances of the class {@code CacheRetentionPolicy} define the behavior of objects that determine
* how important it is for data to be retained in the analysis cache.
*/
public interface CacheRetentionPolicy {
/**
* Return the priority of retaining the AST structure for the given source.
*
* @param source the source whose AST structure is being considered for removal
* @param sourceEntry the entry representing the source
* @return the priority of retaining the AST structure for the given source
*/
public RetentionPriority getAstPriority(Source source, SourceEntry sourceEntry);
}