| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2002 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, if |
| * any, must include the following acknowlegement: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowlegement may appear in the software itself, |
| * if and wherever such third-party acknowlegements normally appear. |
| * |
| * 4. The names "The Jakarta Project", "Ant", and "Apache Software |
| * Foundation" must not be used to endorse or promote products derived |
| * from this software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache" |
| * nor may "Apache" appear in their names without prior written |
| * permission of the Apache Group. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| package org.apache.tools.ant.util.depend.bcel; |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.Enumeration; |
| import java.util.Hashtable; |
| import java.util.Vector; |
| import org.apache.bcel.classfile.ClassParser; |
| import org.apache.bcel.classfile.JavaClass; |
| import org.apache.tools.ant.util.depend.AbstractAnalyzer; |
| |
| /** |
| * A dependency analyzer which returns superclass and superinterface |
| * dependencies. |
| * |
| * @author Conor MacNeill |
| */ |
| public class AncestorAnalyzer extends AbstractAnalyzer { |
| |
| public AncestorAnalyzer() { |
| // force BCEL classes to load now |
| try { |
| ClassParser parser = new ClassParser("force"); |
| } catch (IOException e) { |
| // ignore |
| } |
| } |
| |
| /** |
| * Determine the dependencies of the configured root classes. |
| * |
| * @param files a vector to be populated with the files which contain |
| * the dependency classes |
| * @param classes a vector to be populated with the names of the |
| * depencency classes. |
| */ |
| protected void determineDependencies(Vector files, Vector classes) { |
| // we get the root classes and build up a set of |
| // classes upon which they depend |
| Hashtable dependencies = new Hashtable(); |
| Hashtable containers = new Hashtable(); |
| Hashtable toAnalyze = new Hashtable(); |
| Hashtable nextAnalyze = new Hashtable(); |
| for (Enumeration e = getRootClasses(); e.hasMoreElements();) { |
| String classname = (String) e.nextElement(); |
| toAnalyze.put(classname, classname); |
| } |
| |
| int count = 0; |
| int maxCount = isClosureRequired() ? MAX_LOOPS : 2; |
| while (toAnalyze.size() != 0 && count++ < maxCount) { |
| nextAnalyze.clear(); |
| for (Enumeration e = toAnalyze.keys(); e.hasMoreElements();) { |
| String classname = (String) e.nextElement(); |
| dependencies.put(classname, classname); |
| try { |
| File container = getClassContainer(classname); |
| if (container == null) { |
| continue; |
| } |
| containers.put(container, container); |
| |
| ClassParser parser = null; |
| if (container.getName().endsWith(".class")) { |
| parser = new ClassParser(container.getPath()); |
| } else { |
| parser = new ClassParser(container.getPath(), |
| classname.replace('.', '/') + ".class"); |
| } |
| |
| JavaClass javaClass = parser.parse(); |
| String[] interfaces = javaClass.getInterfaceNames(); |
| for (int i = 0; i < interfaces.length; ++i) { |
| String interfaceName = interfaces[i]; |
| if (!dependencies.containsKey(interfaceName)) { |
| nextAnalyze.put(interfaceName, interfaceName); |
| } |
| } |
| |
| if (javaClass.isClass()) { |
| String superClass = javaClass.getSuperclassName(); |
| if (!dependencies.containsKey(superClass)) { |
| nextAnalyze.put(superClass, superClass); |
| } |
| } |
| } catch (IOException ioe) { |
| // ignore |
| } |
| } |
| |
| Hashtable temp = toAnalyze; |
| toAnalyze = nextAnalyze; |
| nextAnalyze = temp; |
| } |
| |
| files.removeAllElements(); |
| for (Enumeration e = containers.keys(); e.hasMoreElements();) { |
| files.addElement((File) e.nextElement()); |
| } |
| |
| classes.removeAllElements(); |
| for (Enumeration e = dependencies.keys(); e.hasMoreElements();) { |
| classes.addElement((String) e.nextElement()); |
| } |
| } |
| |
| /** |
| * Indicate if this analyzer can determine dependent files. |
| * |
| * @return true if the analyzer provides dependency file information. |
| */ |
| protected boolean supportsFileDependencies() { |
| return true; |
| } |
| |
| } |
| |