| /******************************************************************************* |
| * Copyright (c) 2016 IBM Corporation 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.osgi.internal.log; |
| |
| import org.osgi.framework.ServiceReference; |
| |
| public class Arguments { |
| private final Object[] arguments; |
| private final ServiceReference<?> serviceReference; |
| private final Throwable throwable; |
| |
| public Arguments(Object... arguments) { |
| if (arguments == null || arguments.length == 0) { |
| this.arguments = new Object[0]; |
| serviceReference = null; |
| throwable = null; |
| return; |
| } |
| int length = arguments.length; |
| ServiceReference<?> context = null; |
| Throwable exception = null; |
| Object object = arguments[arguments.length - 1]; |
| if (object instanceof Throwable || object instanceof ServiceReference) { |
| length--; |
| if (object instanceof Throwable) { |
| exception = (Throwable) object; |
| } else { |
| context = (ServiceReference<?>) object; |
| } |
| if (arguments.length > 1) { |
| object = arguments[arguments.length - 2]; |
| if ((object instanceof ServiceReference && context == null) || (object instanceof Throwable && exception == null)) { |
| length--; |
| if (object instanceof Throwable) { |
| exception = (Throwable) object; |
| } else { |
| context = (ServiceReference<?>) object; |
| } |
| } |
| } |
| } |
| serviceReference = context; |
| throwable = exception; |
| this.arguments = new Object[length]; |
| System.arraycopy(arguments, 0, this.arguments, 0, length); |
| } |
| |
| public Object[] arguments() { |
| return arguments; |
| } |
| |
| public boolean isEmpty() { |
| return arguments == null || arguments.length == 0; |
| } |
| |
| public ServiceReference<?> serviceReference() { |
| return serviceReference; |
| } |
| |
| public Throwable throwable() { |
| return throwable; |
| } |
| } |