/* * Copyright 2000-2017 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.vfs.newvfs.impl.VirtualFileSystemEntry; import com.intellij.util.indexing.*; import com.intellij.util.io.EnumeratorStringDescriptor; import com.intellij.util.io.KeyDescriptor; import org.jetbrains.annotations.NonNls; import javax.annotation.Nonnull; import java.util.Collections; public class FilenameIndexImpl extends ScalarIndexExtension<String> { @NonNls static final ID<String, Void> NAME = FilenameIndex.NAME; @Nonnull @Override public ID<String, Void> getName() { return NAME; } @Nonnull @Override public DataIndexer<String, Void, FileContent> getIndexer() { return inputData -> Collections.singletonMap(inputData.getFileName(), null); } @Nonnull @Override public KeyDescriptor<String> getKeyDescriptor() { return EnumeratorStringDescriptor.INSTANCE; } @Nonnull @Override public FileBasedIndex.InputFilter getInputFilter() { return (project, file) -> file instanceof VirtualFileSystemEntry; } @Override public boolean dependsOnFileContent() { return false; } @Override public boolean indexDirectories() { return true; } @Override public int getVersion() { return 3; } @Override public boolean traceKeyHashToVirtualFileMapping() { return true; } }