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/**
* Copyright (c) 2017 Angelo ZERR.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Angelo Zerr <angelo.zerr@gmail.com> - [CodeMining] Add CodeMining support in SourceViewer - Bug 527515
*/
package org.eclipse.jface.text.examples.codemining;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.codemining.AbstractCodeMiningProvider;
import org.eclipse.jface.text.codemining.ICodeMining;
/**
* Class implementation mining provider.
*
*/
public class ClassImplementationsCodeMiningProvider extends AbstractCodeMiningProvider {
@Override
public CompletableFuture<List<? extends ICodeMining>> provideCodeMinings(ITextViewer viewer,
IProgressMonitor monitor) {
return CompletableFuture.supplyAsync(() -> {
IDocument document = viewer.getDocument();
List<ICodeMining> lenses = new ArrayList<>();
int lineCount = document.getNumberOfLines();
for (int i = 0; i < lineCount; i++) {
// check if request was canceled.
monitor.isCanceled();
updateContentMining(i, document, "class ", lenses);
updateContentMining(i, document, "interface ", lenses);
}
return lenses;
});
}
private void updateContentMining(int lineIndex, IDocument document, String token, List<ICodeMining> lenses) {
String line = AbstractClassCodeMining.getLineText(document, lineIndex).trim();
int index = line.indexOf(token);
if (index == 0) {
String className = line.substring(index + token.length(), line.length());
index = className.indexOf(" ");
if (index != -1) {
className = className.substring(0, index);
}
if (className.length() > 0) {
try {
lenses.add(new ClassImplementationCodeMining(className, lineIndex, document, this));
} catch (BadLocationException e) {
e.printStackTrace();
}
}
}
}
}
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