diff options
Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/depend/bcel/DependencyVisitor.java')
| -rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/depend/bcel/DependencyVisitor.java | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/depend/bcel/DependencyVisitor.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/depend/bcel/DependencyVisitor.java deleted file mode 100644 index d31d4534..00000000 --- a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/depend/bcel/DependencyVisitor.java +++ /dev/null @@ -1,192 +0,0 @@ -/* - * 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.util.Enumeration; -import java.util.Hashtable; -import java.util.StringTokenizer; - -import org.apache.bcel.classfile.ConstantClass; -import org.apache.bcel.classfile.ConstantNameAndType; -import org.apache.bcel.classfile.ConstantPool; -import org.apache.bcel.classfile.EmptyVisitor; -import org.apache.bcel.classfile.Field; -import org.apache.bcel.classfile.JavaClass; -import org.apache.bcel.classfile.Method; - -/** - * A BCEL visitor implementation to collect class dependency information - * - */ -public class DependencyVisitor extends EmptyVisitor { - /** The collected dependencies */ - private final Hashtable<String, String> dependencies = new Hashtable<String, String>(); - /** - * The current class's constant pool - used to determine class names - * from class references. - */ - private ConstantPool constantPool; - - /** - * Get the dependencies collected by this visitor - * - * @return a Enumeration of classnames, being the classes upon which the - * visited classes depend. - */ - public Enumeration<String> getDependencies() { - return dependencies.keys(); - } - - /** Clear the current set of collected dependencies. */ - public void clearDependencies() { - dependencies.clear(); - } - - /** - * Visit the constant pool of a class - * - * @param constantPool the constant pool of the class being visited. - */ - public void visitConstantPool(final ConstantPool constantPool) { - this.constantPool = constantPool; - } - - /** - * Visit a class reference - * - * @param constantClass the constantClass entry for the class reference - */ - public void visitConstantClass(final ConstantClass constantClass) { - final String classname - = constantClass.getConstantValue(constantPool).toString(); - addSlashClass(classname); - } - - /** - * Visit a name and type ref - * - * Look for class references in this - * - * @param obj the name and type reference being visited. - */ - public void visitConstantNameAndType(final ConstantNameAndType obj) { - final String name = obj.getName(constantPool); - if (obj.getSignature(constantPool).equals("Ljava/lang/Class;") - && name.startsWith("class$")) { - String classname - = name.substring("class$".length()).replace('$', '.'); - // does the class have a package structure - final int index = classname.lastIndexOf("."); - if (index > 0) { - char start; - // check if the package structure is more than 1 level deep - final int index2 = classname.lastIndexOf(".", index - 1); - if (index2 != -1) { - // class name has more than 1 package level 'com.company.Class' - start = classname.charAt(index2 + 1); - } else { - // class name has only 1 package level 'package.Class' - start = classname.charAt(0); - } - // Check to see if it's an inner class 'com.company.Class$Inner' - // CheckStyle:MagicNumber OFF - if ((start > 0x40) && (start < 0x5B)) { - // first letter of the previous segment of the class name 'Class' - // is upper case ascii. so according to the spec it's an inner class - classname = classname.substring(0, index) + "$" - + classname.substring(index + 1); - addClass(classname); - } else { - // Add the class in dotted notation 'com.company.Class' - addClass(classname); - } - // CheckStyle:MagicNumber ON - } else { - // Add a class with no package 'Class' - addClass(classname); - } - } - } - - /** - * Visit a field of the class. - * - * @param field the field being visited - */ - public void visitField(final Field field) { - addClasses(field.getSignature()); - } - - /** - * Visit a Java class - * - * @param javaClass the class being visited. - */ - public void visitJavaClass(final JavaClass javaClass) { - addClass(javaClass.getClassName()); - } - - /** - * Visit a method of the current class - * - * @param method the method being visited. - */ - public void visitMethod(final Method method) { - final String signature = method.getSignature(); - final int pos = signature.indexOf(")"); - addClasses(signature.substring(1, pos)); - addClasses(signature.substring(pos + 1)); - } - - /** - * Add a classname to the list of dependency classes - * - * @param classname the class to be added to the list of dependencies. - */ - void addClass(final String classname) { - dependencies.put(classname, classname); - } - - /** - * Add all the classes from a descriptor string. - * - * @param string the descriptor string, being descriptors separated by - * ';' characters. - */ - private void addClasses(final String string) { - final StringTokenizer tokens = new StringTokenizer(string, ";"); - while (tokens.hasMoreTokens()) { - final String descriptor = tokens.nextToken(); - final int pos = descriptor.indexOf('L'); - if (pos != -1) { - addSlashClass(descriptor.substring(pos + 1)); - } - } - } - - /** - * Adds a class name in slash format - * (for example org/apache/tools/ant/Main). - * - * @param classname the class name in slash format - */ - private void addSlashClass(final String classname) { - addClass(classname.replace('/', '.')); - } -} - |