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/*
* 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.impl.cache.impl.todo;
import com.intellij.lang.Language;
import com.intellij.lang.LanguageParserDefinitions;
import com.intellij.lang.ParserDefinition;
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.psi.impl.cache.impl.id.PlatformIdTableBuilding;
import com.intellij.psi.search.IndexPatternProvider;
import com.intellij.psi.tree.TokenSet;
import com.intellij.util.indexing.*;
import com.intellij.util.io.DataExternalizer;
import com.intellij.util.io.IntInlineKeyDescriptor;
import com.intellij.util.io.KeyDescriptor;
import com.intellij.util.messages.MessageBus;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
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 20, 2008
*/
public class TodoIndex extends FileBasedIndexExtension<TodoIndexEntry, Integer> {
@NonNls public static final ID<TodoIndexEntry, Integer> NAME = ID.create("TodoIndex");
public TodoIndex(MessageBus messageBus) {
messageBus.connect().subscribe(IndexPatternProvider.INDEX_PATTERNS_CHANGED, new PropertyChangeListener() {
@Override
public void propertyChange(PropertyChangeEvent evt) {
FileBasedIndex.getInstance().requestRebuild(NAME);
}
});
}
private final KeyDescriptor<TodoIndexEntry> myKeyDescriptor = new KeyDescriptor<TodoIndexEntry>() {
@Override
public int getHashCode(final TodoIndexEntry value) {
return value.hashCode();
}
@Override
public boolean isEqual(final TodoIndexEntry val1, final TodoIndexEntry val2) {
return val1.equals(val2);
}
@Override
public void save(@NotNull final DataOutput out, final TodoIndexEntry value) throws IOException {
out.writeUTF(value.pattern);
out.writeBoolean(value.caseSensitive);
}
@Override
public TodoIndexEntry read(@NotNull final DataInput in) throws IOException {
final String pattern = in.readUTF();
final boolean caseSensitive = in.readBoolean();
return new TodoIndexEntry(pattern, caseSensitive);
}
};
private final DataExternalizer<Integer> myValueExternalizer = new IntInlineKeyDescriptor() {
@Override
protected boolean isCompactFormat() {
return true;
}
};
private final DataIndexer<TodoIndexEntry, Integer, FileContent> myIndexer = new DataIndexer<TodoIndexEntry, Integer, FileContent>() {
@Override
@NotNull
public Map<TodoIndexEntry,Integer> map(@NotNull final FileContent inputData) {
final VirtualFile file = inputData.getFile();
final DataIndexer<TodoIndexEntry, Integer, FileContent> indexer = PlatformIdTableBuilding
.getTodoIndexer(inputData.getFileType(), file);
if (indexer != null) {
return indexer.map(inputData);
}
return Collections.emptyMap();
}
};
private final FileBasedIndex.InputFilter myInputFilter = new FileBasedIndex.InputFilter() {
@Override
public boolean acceptInput(@NotNull final VirtualFile file) {
if (!file.isInLocalFileSystem()) {
return false; // do not index TODOs in library sources
}
final FileType fileType = file.getFileType();
if (fileType instanceof LanguageFileType) {
final Language lang = ((LanguageFileType)fileType).getLanguage();
final ParserDefinition parserDef = LanguageParserDefinitions.INSTANCE.forLanguage(lang);
final TokenSet commentTokens = parserDef != null ? parserDef.getCommentTokens() : null;
return commentTokens != null;
}
return PlatformIdTableBuilding.isTodoIndexerRegistered(fileType) ||
fileType instanceof CustomSyntaxTableFileType;
}
};
@Override
public int getVersion() {
return 8;
}
@Override
public boolean dependsOnFileContent() {
return true;
}
@NotNull
@Override
public ID<TodoIndexEntry, Integer> getName() {
return NAME;
}
@NotNull
@Override
public DataIndexer<TodoIndexEntry, Integer, FileContent> getIndexer() {
return myIndexer;
}
@NotNull
@Override
public KeyDescriptor<TodoIndexEntry> getKeyDescriptor() {
return myKeyDescriptor;
}
@NotNull
@Override
public DataExternalizer<Integer> getValueExternalizer() {
return myValueExternalizer;
}
@NotNull
@Override
public FileBasedIndex.InputFilter getInputFilter() {
return myInputFilter;
}
@Override
public boolean hasSnapshotMapping() {
return true;
}
}
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