| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.debug.core.variables; |
| |
| |
| import java.text.MessageFormat; |
| |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.debug.core.DebugPlugin; |
| import org.eclipse.debug.internal.core.DebugCoreMessages; |
| |
| /** |
| * Default variable expander implementation. Does nothing. |
| * <p> |
| * Clients implementing variable expanders should extend this class. |
| * </p> |
| * @since 3.0 |
| */ |
| public class DefaultVariableExpander implements IVariableExpander { |
| |
| private static DefaultVariableExpander instance; |
| |
| public static DefaultVariableExpander getDefault() { |
| if (instance == null) { |
| instance= new DefaultVariableExpander(); |
| } |
| return instance; |
| } |
| |
| /** |
| * @see IVariableExpander#getResources(String, String, ExpandVariableContext) |
| */ |
| public IResource[] getResources(String varTag, String varValue, ExpandVariableContext context) throws CoreException { |
| throwExpansionException(varTag, MessageFormat.format(DebugCoreMessages.getString("DefaultVariableExpander.0"), new String[] {varTag})); //$NON-NLS-1$ |
| return null; |
| } |
| |
| /** |
| * @see IVariableExpander#getText(String, String, ExpandVariableContext) |
| */ |
| public String getText(String varTag, String varValue, ExpandVariableContext context) throws CoreException { |
| throwExpansionException(varTag, MessageFormat.format(DebugCoreMessages.getString("DefaultVariableExpander.0"), new String[] {varTag})); //$NON-NLS-1$ |
| return null; |
| } |
| |
| /** |
| * Utility method which throws an exception that occurred for the given reason |
| * while expanding the given variable tag. |
| */ |
| public static void throwExpansionException(String varTag, String reason) throws CoreException { |
| throw new CoreException(new Status(IStatus.ERROR, DebugPlugin.getUniqueIdentifier(), IStatus.ERROR, MessageFormat.format(DebugCoreMessages.getString("DefaultVariableExpander.2"), new String[] {varTag, reason}), null)); //$NON-NLS-1$ |
| } |
| |
| } |