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Ant example source code file (AncestorAnalyzer.java)
The AncestorAnalyzer.java source code/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ 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. * */ public class AncestorAnalyzer extends AbstractAnalyzer { /** * Default constructor * * Causes the BCEL classes to load to ensure BCEL dependencies can * be satisfied */ public AncestorAnalyzer() { // force BCEL classes to load now try { 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; } } Other Ant examples (source code examples)Here is a short list of links related to this Ant AncestorAnalyzer.java source code file: |
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