| /* |
| * Copyright 2000-2014 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.search; |
| |
| import com.intellij.openapi.extensions.Extensions; |
| import com.intellij.openapi.fileTypes.FileType; |
| import com.intellij.openapi.fileTypes.FileTypeRegistry; |
| import com.intellij.openapi.util.Comparing; |
| import com.intellij.openapi.vfs.VirtualFile; |
| import com.intellij.util.indexing.*; |
| import com.intellij.util.io.EnumeratorStringDescriptor; |
| import com.intellij.util.io.KeyDescriptor; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Map; |
| |
| /** |
| * @author Dmitry Avdeev |
| */ |
| public class FileTypeIndex extends ScalarIndexExtension<FileType> |
| implements FileBasedIndex.InputFilter, KeyDescriptor<FileType>, DataIndexer<FileType, Void, FileContent> { |
| private static final EnumeratorStringDescriptor ENUMERATOR_STRING_DESCRIPTOR = new EnumeratorStringDescriptor(); |
| |
| @NotNull |
| public static Collection<VirtualFile> getFiles(@NotNull FileType fileType, @NotNull GlobalSearchScope scope) { |
| return FileBasedIndex.getInstance().getContainingFiles(NAME, fileType, scope); |
| } |
| |
| public static final ID<FileType, Void> NAME = ID.create("filetypes"); |
| |
| private final FileTypeRegistry myFileTypeManager; |
| |
| public FileTypeIndex(FileTypeRegistry fileTypeRegistry) { |
| myFileTypeManager = fileTypeRegistry; |
| } |
| |
| @NotNull |
| @Override |
| public ID<FileType, Void> getName() { |
| return NAME; |
| } |
| |
| @NotNull |
| @Override |
| public DataIndexer<FileType, Void, FileContent> getIndexer() { |
| return this; |
| } |
| |
| @NotNull |
| @Override |
| public KeyDescriptor<FileType> getKeyDescriptor() { |
| return this; |
| } |
| |
| @NotNull |
| @Override |
| public FileBasedIndex.InputFilter getInputFilter() { |
| return this; |
| } |
| |
| @Override |
| public boolean dependsOnFileContent() { |
| return false; |
| } |
| |
| @Override |
| public int getVersion() { |
| FileType[] types = myFileTypeManager.getRegisteredFileTypes(); |
| int version = 1; |
| for (FileType type : types) { |
| version += type.getName().hashCode(); |
| } |
| |
| version *= 31; |
| for (FileTypeRegistry.FileTypeDetector detector : Extensions.getExtensions(FileTypeRegistry.FileTypeDetector.EP_NAME)) { |
| version += detector.getVersion(); |
| } |
| return version; |
| } |
| |
| @Override |
| public boolean acceptInput(@NotNull VirtualFile file) { |
| return !file.isDirectory(); |
| } |
| |
| @Override |
| public void save(@NotNull DataOutput out, FileType value) throws IOException { |
| ENUMERATOR_STRING_DESCRIPTOR.save(out, value.getName()); |
| } |
| |
| @Override |
| public FileType read(@NotNull DataInput in) throws IOException { |
| String read = ENUMERATOR_STRING_DESCRIPTOR.read(in); |
| return myFileTypeManager.findFileTypeByName(read); |
| } |
| |
| @Override |
| public int getHashCode(FileType value) { |
| return value.getName().hashCode(); |
| } |
| |
| @Override |
| public boolean isEqual(FileType val1, FileType val2) { |
| return Comparing.equal(val1, val2); |
| } |
| |
| @NotNull |
| @Override |
| public Map<FileType, Void> map(@NotNull FileContent inputData) { |
| return Collections.singletonMap(inputData.getFileType(), null); |
| } |
| |
| public static boolean containsFileOfType(@NotNull FileType type, @NotNull GlobalSearchScope scope) { |
| return !FileBasedIndex.getInstance().processValues(NAME, type, null, new FileBasedIndex.ValueProcessor<Void>() { |
| @Override |
| public boolean process(VirtualFile file, Void value) { |
| return false; |
| } |
| }, scope); |
| } |
| } |