| /******************************************************************************* |
| * Copyright (c) 2022 Red Hat, Inc. and others. |
| * |
| * 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 |
| *******************************************************************************/ |
| package org.eclipse.debug.internal.ui.codemining; |
| |
| import java.util.ArrayList; |
| import java.util.LinkedHashMap; |
| import java.util.List; |
| import java.util.concurrent.CompletableFuture; |
| |
| import org.eclipse.core.runtime.Adapters; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.debug.core.DebugException; |
| import org.eclipse.debug.core.DebugPlugin; |
| import org.eclipse.debug.core.IDebugEventSetListener; |
| import org.eclipse.debug.core.model.IVariable; |
| import org.eclipse.debug.internal.ui.DebugUIPlugin; |
| import org.eclipse.debug.ui.IDebugUIConstants; |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.ITextViewer; |
| import org.eclipse.jface.text.TextSelection; |
| import org.eclipse.jface.text.codemining.AbstractCodeMiningProvider; |
| import org.eclipse.jface.text.codemining.ICodeMining; |
| import org.eclipse.jface.text.source.ISourceViewerExtension5; |
| |
| public class DebugValueCodeMiningProvider extends AbstractCodeMiningProvider { |
| |
| private volatile boolean alreadyListening; |
| private volatile IDebugEventSetListener listener; |
| |
| @Override |
| public CompletableFuture<List<? extends ICodeMining>> provideCodeMinings(ITextViewer viewer, |
| IProgressMonitor monitor) { |
| if (!isEnabled()) { |
| return CompletableFuture.completedFuture(List.of()); |
| } |
| final IDocument document = viewer.getDocument(); |
| if (viewer instanceof ISourceViewerExtension5 && !alreadyListening) { |
| alreadyListening = true; |
| listener = e -> ((ISourceViewerExtension5) viewer).updateCodeMinings(); |
| DebugPlugin.getDefault().addDebugEventListener(listener); |
| } |
| return CompletableFuture.supplyAsync(() -> { |
| List<DebugValueCodeMining> res = new ArrayList<>(); |
| for (int line = 0; line < document.getNumberOfLines(); line++) { |
| LinkedHashMap<String, IVariable> variablesOnLine = new LinkedHashMap<>(); |
| try { |
| IRegion lineInfo = document.getLineInformation(line); |
| for (int offsetInLine = 0; offsetInLine < lineInfo.getLength(); offsetInLine++) { |
| IVariable variableAtOffset = Adapters.adapt( |
| new TextSelection(document, lineInfo.getOffset() + offsetInLine, 0), IVariable.class); |
| if (variableAtOffset != null) { |
| try { |
| variablesOnLine.putIfAbsent(variableAtOffset.getName(), variableAtOffset); |
| offsetInLine += variableAtOffset.getName().length(); |
| } catch (DebugException ex) { |
| DebugUIPlugin.log(ex); |
| } |
| } |
| } |
| for (IVariable variableOnLine : variablesOnLine.values()) { |
| res.add(new DebugValueCodeMining(document, line, variableOnLine, this)); |
| } |
| } catch (BadLocationException e) { |
| DebugUIPlugin.log(e); |
| } |
| } |
| return res; |
| }); |
| } |
| |
| private boolean isEnabled() { |
| return DebugUIPlugin.getDefault().getPreferenceStore().getBoolean(IDebugUIConstants.PREF_SHOW_VARIABLES_INLINE); |
| } |
| |
| @Override |
| public void dispose() { |
| if (listener != null) { |
| DebugPlugin.getDefault().removeDebugEventListener(listener); |
| } |
| } |
| } |