| /* |
| * 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 org.netbeans.modules.javascript2.doc; |
| |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.logging.Logger; |
| import org.netbeans.modules.javascript2.doc.api.JsDocumentationSupport; |
| import org.netbeans.modules.javascript2.doc.spi.JsDocumentationProvider; |
| import org.netbeans.modules.parsing.api.Snapshot; |
| import org.openide.util.lookup.Lookups; |
| |
| /** |
| * This class should resolve JavaScript documentation types of files. |
| * |
| * @author Martin Fousek <marfous@netbeans.org> |
| */ |
| public class JsDocumentationResolver { |
| |
| private static final Logger LOG = Logger.getLogger(JsDocumentationResolver.class.getName()); |
| private static JsDocumentationResolver instance; |
| |
| private static final List<? extends JsDocumentationProvider> PROVIDERS = new ArrayList<JsDocumentationProvider>( |
| Lookups.forPath(JsDocumentationSupport.DOCUMENTATION_PROVIDER_PATH).lookupResult(JsDocumentationProvider.class).allInstances()); |
| |
| public static synchronized JsDocumentationResolver getDefault() { |
| if (instance == null) { |
| instance = new JsDocumentationResolver(); |
| } |
| return instance; |
| } |
| |
| /** |
| * Finds and gets JsDocumentationProvider for given snapshot. |
| * @param snapshot snapshot to be examined |
| * @return provider, never {@code null}; as a fallback can return {@link JsDocumentationFallbackProvider} |
| */ |
| public JsDocumentationProvider getDocumentationProvider(Snapshot snapshot) { |
| return findBestMatchingProvider(snapshot); |
| } |
| |
| private JsDocumentationProvider findBestMatchingProvider(Snapshot snapshot) { |
| Set<String> allTags = JsDocumentationReader.getAllTags(snapshot); |
| float max = -1.0f; |
| JsDocumentationProvider bestProvider = null; |
| for (JsDocumentationProvider jsDocumentationProvider : PROVIDERS) { |
| float coverage = countTagsCoverageRatio(allTags, jsDocumentationProvider); |
| if (coverage == 1.0) { |
| return jsDocumentationProvider; |
| } else { |
| if (coverage > max) { |
| max = coverage; |
| bestProvider = jsDocumentationProvider; |
| } |
| } |
| } |
| return bestProvider != null ? bestProvider : new JsDocumentationFallbackProvider(); |
| } |
| |
| private float countTagsCoverageRatio(Set<String> tags, JsDocumentationProvider provider) { |
| Set<String> unsupportedTags = new HashSet<String>(tags); |
| unsupportedTags.removeAll(provider.getSupportedTags()); |
| if (unsupportedTags.isEmpty()) { |
| return 1.0f; |
| } else { |
| float coverage = 1.0f - (1.0f / tags.size() * unsupportedTags.size()); |
| return coverage; |
| } |
| } |
| } |