| /******************************************************************************* |
| * Copyright (c) 2007, 2011 Wind River Systems and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Wind River Systems - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.cdt.dsf.debug.internal.ui.disassembly; |
| |
| import org.eclipse.cdt.debug.internal.ui.disassembly.dsf.AddressRangePosition; |
| import org.eclipse.cdt.debug.internal.ui.disassembly.dsf.DisassemblyPosition; |
| import org.eclipse.cdt.debug.internal.ui.disassembly.dsf.LabelPosition; |
| import org.eclipse.cdt.dsf.debug.internal.ui.disassembly.model.DisassemblyDocument; |
| import org.eclipse.cdt.dsf.internal.ui.DsfUIPlugin; |
| import org.eclipse.cdt.internal.ui.text.CWordFinder; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.ITextHover; |
| import org.eclipse.jface.text.ITextViewer; |
| |
| /** |
| * A text hover to evaluate registers and variables under the cursor. |
| */ |
| public class DisassemblyTextHover implements ITextHover { |
| |
| private final DisassemblyPart fDisassemblyPart; |
| |
| /** |
| * Create a new disassembly text hover. |
| */ |
| public DisassemblyTextHover(DisassemblyPart part) { |
| fDisassemblyPart= part; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.text.ITextHover#getHoverRegion(org.eclipse.jface.text.ITextViewer, int) |
| */ |
| @Override |
| public IRegion getHoverRegion(ITextViewer textViewer, int offset) { |
| IDocument doc = textViewer.getDocument(); |
| return CWordFinder.findWord(doc, offset); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.text.ITextHover#getHoverInfo(org.eclipse.jface.text.ITextViewer, org.eclipse.jface.text.IRegion) |
| */ |
| @Override |
| public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) { |
| DisassemblyDocument doc = (DisassemblyDocument)textViewer.getDocument(); |
| int offset = hoverRegion.getOffset(); |
| AddressRangePosition pos; |
| try { |
| String ident = doc.get(offset, hoverRegion.getLength()); |
| String value = null; |
| pos = doc.getModelPosition(offset); |
| |
| value = fDisassemblyPart.getHoverInfoData(pos, ident); |
| |
| // If returns null (or empty string), not implemented or something went wrong. |
| if (value == null || value.length() == 0) { |
| if (pos instanceof SourcePosition) { |
| value = evaluateExpression(ident); |
| } else if (pos instanceof LabelPosition) { |
| value = evaluateExpression(ident); |
| } else if (pos instanceof DisassemblyPosition) { |
| // first, try to evaluate as register |
| value = evaluateRegister(ident); |
| if (value == null) { |
| // if this fails, try expression |
| value = evaluateExpression(ident); |
| } |
| } |
| if (value != null) { |
| return ident + " = " + value; //$NON-NLS-1$ |
| } |
| } |
| else |
| return value; |
| } catch (BadLocationException e) { |
| if (DsfUIPlugin.getDefault().isDebugging()) { |
| DsfUIPlugin.getDefault().getLog().log(new Status(IStatus.ERROR, DsfUIPlugin.PLUGIN_ID, "Internal Error", e)); //$NON-NLS-1$ |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Evaluate the given register. |
| * @param register |
| * @return register value or <code>null</code> |
| */ |
| private String evaluateRegister(String register) { |
| return fDisassemblyPart.evaluateRegister(register); |
| } |
| |
| /** |
| * Evaluate the given expression. |
| * @param expr |
| * @return expression value or <code>null</code> |
| */ |
| private String evaluateExpression(final String expr) { |
| return fDisassemblyPart.evaluateExpression(expr); |
| } |
| |
| } |