| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * 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 com.intellij.psi.impl.cache.impl.id; |
| |
| import com.intellij.lang.cacheBuilder.CacheBuilderRegistry; |
| import com.intellij.openapi.fileTypes.FileType; |
| import com.intellij.openapi.fileTypes.LanguageFileType; |
| import com.intellij.openapi.fileTypes.impl.CustomSyntaxTableFileType; |
| import com.intellij.openapi.vfs.VirtualFile; |
| import com.intellij.util.indexing.*; |
| import com.intellij.util.io.DataExternalizer; |
| import com.intellij.util.io.InlineKeyDescriptor; |
| import com.intellij.util.io.KeyDescriptor; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.Map; |
| |
| /** |
| * @author Eugene Zhuravlev |
| * Date: Jan 16, 2008 |
| */ |
| public class IdIndex extends FileBasedIndexExtension<IdIndexEntry, Integer> { |
| @NonNls public static final ID<IdIndexEntry, Integer> NAME = ID.create("IdIndex"); |
| |
| private final FileBasedIndex.InputFilter myInputFilter = new FileBasedIndex.InputFilter() { |
| @Override |
| public boolean acceptInput(final VirtualFile file) { |
| return isIndexable(file.getFileType()); |
| } |
| }; |
| |
| private final DataExternalizer<Integer> myValueExternalizer = new DataExternalizer<Integer>() { |
| @Override |
| public void save(final DataOutput out, final Integer value) throws IOException { |
| out.writeByte(value.intValue()); |
| } |
| |
| @Override |
| public Integer read(final DataInput in) throws IOException { |
| return Integer.valueOf(in.readByte()); |
| } |
| }; |
| |
| private final KeyDescriptor<IdIndexEntry> myKeyDescriptor = new InlineKeyDescriptor<IdIndexEntry>() { |
| @Override |
| public IdIndexEntry fromInt(int n) { |
| return new IdIndexEntry(n); |
| } |
| |
| @Override |
| public int toInt(IdIndexEntry idIndexEntry) { |
| return idIndexEntry.getWordHashCode(); |
| } |
| }; |
| |
| private final DataIndexer<IdIndexEntry, Integer, FileContent> myIndexer = new DataIndexer<IdIndexEntry, Integer, FileContent>() { |
| @Override |
| @NotNull |
| public Map<IdIndexEntry, Integer> map(final FileContent inputData) { |
| final FileTypeIdIndexer indexer = IdTableBuilding.getFileTypeIndexer(inputData.getFileType()); |
| if (indexer != null) { |
| return indexer.map(inputData); |
| } |
| |
| return Collections.emptyMap(); |
| } |
| }; |
| |
| @Override |
| public int getVersion() { |
| return 10; // TODO: version should enumerate all word scanner versions and build version upon that set |
| } |
| |
| @Override |
| public boolean dependsOnFileContent() { |
| return true; |
| } |
| |
| @NotNull |
| @Override |
| public ID<IdIndexEntry,Integer> getName() { |
| return NAME; |
| } |
| |
| @NotNull |
| @Override |
| public DataIndexer<IdIndexEntry, Integer, FileContent> getIndexer() { |
| return myIndexer; |
| } |
| |
| @Override |
| public DataExternalizer<Integer> getValueExternalizer() { |
| return myValueExternalizer; |
| } |
| |
| @Override |
| public KeyDescriptor<IdIndexEntry> getKeyDescriptor() { |
| return myKeyDescriptor; |
| } |
| |
| @Override |
| public FileBasedIndex.InputFilter getInputFilter() { |
| return myInputFilter; |
| } |
| |
| private static boolean isIndexable(FileType fileType) { |
| return fileType instanceof LanguageFileType || |
| fileType instanceof CustomSyntaxTableFileType || |
| IdTableBuilding.isIdIndexerRegistered(fileType) || |
| CacheBuilderRegistry.getInstance().getCacheBuilder(fileType) != null; |
| } |
| |
| } |