| /* |
| * 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.web.el; |
| |
| import com.sun.el.parser.*; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| import javax.el.ELException; |
| import org.netbeans.modules.parsing.api.Snapshot; |
| import org.netbeans.modules.parsing.spi.Parser.Result; |
| import org.netbeans.modules.parsing.spi.indexing.Context; |
| import org.netbeans.modules.parsing.spi.indexing.EmbeddingIndexer; |
| import org.netbeans.modules.parsing.spi.indexing.EmbeddingIndexerFactory; |
| import org.netbeans.modules.parsing.spi.indexing.Indexable; |
| import org.netbeans.modules.parsing.spi.indexing.support.IndexDocument; |
| import org.netbeans.modules.parsing.spi.indexing.support.IndexingSupport; |
| import org.netbeans.modules.web.el.spi.ELPlugin; |
| |
| /** |
| * Expression Language indexer. |
| * |
| * TODO: should store node offsets to the index |
| * |
| * @author Erno Mononen |
| */ |
| public final class ELIndexer extends EmbeddingIndexer { |
| |
| private static final Logger LOGGER = Logger.getLogger(ELIndexer.class.getName()); |
| |
| @Override |
| protected void index(Indexable indexable, Result parserResult, Context context) { |
| ELParserResult elResult = (ELParserResult) parserResult; |
| if (!elResult.hasElements()) { |
| return; |
| } |
| |
| IndexingSupport support; |
| try { |
| support = IndexingSupport.getInstance(context); |
| } catch (IOException ioe) { |
| LOGGER.log(Level.WARNING, null, ioe); |
| return; |
| } |
| new Analyzer(elResult, support).analyze(); |
| } |
| |
| private static class Analyzer implements NodeVisitor { |
| |
| private final ELParserResult parserResult; |
| private final IndexingSupport support; |
| private final List<IndexDocument> documents = new ArrayList<>(); |
| |
| public Analyzer(ELParserResult parserResult, IndexingSupport support) { |
| this.parserResult = parserResult; |
| this.support = support; |
| } |
| |
| void analyze() { |
| for (final ELElement each : parserResult.getElements()) { |
| if (each.isValid()) { |
| IndexDocument doc = support.createDocument(parserResult.getFileObject()); |
| documents.add(doc); |
| addPair(Fields.EXPRESSION, each.getExpression().getPreprocessedExpression()); |
| each.getNode().accept(this); |
| support.addDocument(doc); |
| } |
| } |
| } |
| |
| private IndexDocument getCurrent() { |
| assert !documents.isEmpty() : "No current document"; |
| return documents.get(documents.size() - 1); |
| } |
| |
| public List<IndexDocument> getDocuments() { |
| return documents; |
| } |
| |
| private void addPair(String key, String value) { |
| if(value != null) { |
| getCurrent().addPair(key, value, true, true); |
| } |
| } |
| |
| @Override |
| public void visit(Node node) throws ELException { |
| if (node instanceof AstIdentifier) { |
| String identifier = ((AstIdentifier) node).getImage(); |
| addPair(Fields.IDENTIFIER, identifier); |
| } else if (NodeUtil.isMethodCall(node)) { |
| String method = node.getImage(); |
| addPair(Fields.METHOD, method); |
| } else if (node instanceof AstDotSuffix) { |
| String property = ((AstDotSuffix) node).getImage(); |
| addPair(Fields.PROPERTY, property); |
| } |
| } |
| } |
| |
| public static final class Fields { |
| |
| public static final String SEPARATOR = "|"; |
| public static final String EXPRESSION = "expression"; |
| public static final String IDENTIFIER = "identifier"; |
| public static final String IDENTIFIER_FULL_EXPRESSION = "identifier_full_expression"; |
| public static final String PROPERTY = "property"; |
| public static final String PROPERTY_OWNER = "property_owner"; |
| public static final String PROPERTY_FULL_EXPRESSION = "property_full_expression"; |
| public static final String METHOD = "method"; |
| public static final String METHOD_FULL_EXPRESSION = "method_full_expression"; |
| |
| static String encode(String... values) { |
| StringBuilder result = new StringBuilder(); |
| for (int i = 0; i < values.length; i++) { |
| result.append(values[i]); |
| if (i + 1 < values.length) { |
| result.append(SEPARATOR); |
| } |
| |
| } |
| return result.toString(); |
| } |
| |
| public static String[] split(String field) { |
| return field.split("\\" + SEPARATOR); |
| } |
| } |
| |
| public static final class Factory extends EmbeddingIndexerFactory { |
| |
| static final String NAME = "EL"; //NOI18N |
| static final int VERSION = 1; |
| private static Collection<String> INDEXABLE_MIMETYPES; |
| |
| private static synchronized Collection<String> getIndexableMimeTypes() { |
| if(INDEXABLE_MIMETYPES == null) { |
| INDEXABLE_MIMETYPES = new ArrayList<>(); |
| for(ELPlugin plugin : ELPlugin.Query.getELPlugins()) { |
| INDEXABLE_MIMETYPES.addAll(plugin.getMimeTypes()); |
| } |
| } |
| return INDEXABLE_MIMETYPES; |
| } |
| |
| @Override |
| public EmbeddingIndexer createIndexer(Indexable indexable, Snapshot snapshot) { |
| if (isIndexable(indexable, snapshot)) { |
| return new ELIndexer(); |
| } |
| return null; |
| } |
| |
| private static boolean isIndexable(Indexable indexable, Snapshot snapshot) { |
| return getIndexableMimeTypes().contains(indexable.getMimeType()); |
| } |
| |
| @Override |
| public void filesDeleted(Iterable<? extends Indexable> deleted, Context context) { |
| } |
| |
| @Override |
| public void filesDirty(Iterable<? extends Indexable> dirty, Context context) { |
| } |
| |
| @Override |
| public String getIndexerName() { |
| return NAME; |
| } |
| |
| @Override |
| public int getIndexVersion() { |
| return VERSION; |
| } |
| } |
| } |