jaxp/src/java.xml/share/classes/com/sun/org/apache/bcel/internal/classfile/DescendingVisitor.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jaxp/src/java.xml/share/classes/com/sun/org/apache/bcel/internal/classfile/DescendingVisitor.java Sun Aug 17 15:51:56 2014 +0100
@@ -0,0 +1,366 @@
+/*
+ * reserved comment block
+ * DO NOT REMOVE OR ALTER!
+ */
+package com.sun.org.apache.bcel.internal.classfile;
+
+/* ====================================================================
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 2001 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 acknowledgment:
+ * "This product includes software developed by the
+ * Apache Software Foundation (http://www.apache.org/)."
+ * Alternately, this acknowledgment may appear in the software itself,
+ * if and wherever such third-party acknowledgments normally appear.
+ *
+ * 4. The names "Apache" and "Apache Software Foundation" and
+ * "Apache BCEL" 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",
+ * "Apache BCEL", nor may "Apache" appear in their name, without
+ * prior written permission of the Apache Software Foundation.
+ *
+ * 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/>.
+ */
+import java.util.Stack;
+
+/**
+ * Traverses a JavaClass with another Visitor object 'piggy-backed'
+ * that is applied to all components of a JavaClass object. I.e. this
+ * class supplies the traversal strategy, other classes can make use
+ * of it.
+ *
+ * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
+ */
+public class DescendingVisitor implements Visitor {
+ private JavaClass clazz;
+ private Visitor visitor;
+ private Stack stack = new Stack();
+
+ /** @return container of current entitity, i.e., predecessor during traversal
+ */
+ public Object predecessor() {
+ return predecessor(0);
+ }
+
+ /**
+ * @param level nesting level, i.e., 0 returns the direct predecessor
+ * @return container of current entitity, i.e., predecessor during traversal
+ */
+ public Object predecessor(int level) {
+ int size = stack.size();
+
+ if((size < 2) || (level < 0))
+ return null;
+ else
+ return stack.elementAt(size - (level + 2)); // size - 1 == current
+ }
+
+ /** @return current object
+ */
+ public Object current() {
+ return stack.peek();
+ }
+
+ /**
+ * @param clazz Class to traverse
+ * @param visitor visitor object to apply to all components
+ */
+ public DescendingVisitor(JavaClass clazz, Visitor visitor) {
+ this.clazz = clazz;
+ this.visitor = visitor;
+ }
+
+ /**
+ * Start traversal.
+ */
+ public void visit() { clazz.accept(this); }
+
+ public void visitJavaClass(JavaClass clazz) {
+ stack.push(clazz);
+ clazz.accept(visitor);
+
+ Field[] fields = clazz.getFields();
+ for(int i=0; i < fields.length; i++)
+ fields[i].accept(this);
+
+ Method[] methods = clazz.getMethods();
+ for(int i=0; i < methods.length; i++)
+ methods[i].accept(this);
+
+ Attribute[] attributes = clazz.getAttributes();
+ for(int i=0; i < attributes.length; i++)
+ attributes[i].accept(this);
+
+ clazz.getConstantPool().accept(this);
+ stack.pop();
+ }
+
+ public void visitField(Field field) {
+ stack.push(field);
+ field.accept(visitor);
+
+ Attribute[] attributes = field.getAttributes();
+ for(int i=0; i < attributes.length; i++)
+ attributes[i].accept(this);
+ stack.pop();
+ }
+
+ public void visitConstantValue(ConstantValue cv) {
+ stack.push(cv);
+ cv.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitMethod(Method method) {
+ stack.push(method);
+ method.accept(visitor);
+
+ Attribute[] attributes = method.getAttributes();
+ for(int i=0; i < attributes.length; i++)
+ attributes[i].accept(this);
+
+ stack.pop();
+ }
+
+ public void visitExceptionTable(ExceptionTable table) {
+ stack.push(table);
+ table.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitCode(Code code) {
+ stack.push(code);
+ code.accept(visitor);
+
+ CodeException[] table = code.getExceptionTable();
+ for(int i=0; i < table.length; i++)
+ table[i].accept(this);
+
+ Attribute[] attributes = code.getAttributes();
+ for(int i=0; i < attributes.length; i++)
+ attributes[i].accept(this);
+ stack.pop();
+ }
+
+ public void visitCodeException(CodeException ce) {
+ stack.push(ce);
+ ce.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitLineNumberTable(LineNumberTable table) {
+ stack.push(table);
+ table.accept(visitor);
+
+ LineNumber[] numbers = table.getLineNumberTable();
+ for(int i=0; i < numbers.length; i++)
+ numbers[i].accept(this);
+ stack.pop();
+ }
+
+ public void visitLineNumber(LineNumber number) {
+ stack.push(number);
+ number.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitLocalVariableTable(LocalVariableTable table) {
+ stack.push(table);
+ table.accept(visitor);
+
+ LocalVariable[] vars = table.getLocalVariableTable();
+ for(int i=0; i < vars.length; i++)
+ vars[i].accept(this);
+ stack.pop();
+ }
+
+ public void visitLocalVariableTypeTable(LocalVariableTypeTable obj) {
+ stack.push(obj);
+ obj.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitStackMap(StackMap table) {
+ stack.push(table);
+ table.accept(visitor);
+
+ StackMapEntry[] vars = table.getStackMap();
+
+ for(int i=0; i < vars.length; i++)
+ vars[i].accept(this);
+ stack.pop();
+ }
+
+ public void visitStackMapEntry(StackMapEntry var) {
+ stack.push(var);
+ var.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitLocalVariable(LocalVariable var) {
+ stack.push(var);
+ var.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitConstantPool(ConstantPool cp) {
+ stack.push(cp);
+ cp.accept(visitor);
+
+ Constant[] constants = cp.getConstantPool();
+ for(int i=1; i < constants.length; i++) {
+ if(constants[i] != null)
+ constants[i].accept(this);
+ }
+
+ stack.pop();
+ }
+
+ public void visitConstantClass(ConstantClass constant) {
+ stack.push(constant);
+ constant.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitConstantDouble(ConstantDouble constant) {
+ stack.push(constant);
+ constant.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitConstantFieldref(ConstantFieldref constant) {
+ stack.push(constant);
+ constant.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitConstantFloat(ConstantFloat constant) {
+ stack.push(constant);
+ constant.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitConstantInteger(ConstantInteger constant) {
+ stack.push(constant);
+ constant.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitConstantInterfaceMethodref(ConstantInterfaceMethodref constant) {
+ stack.push(constant);
+ constant.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitConstantLong(ConstantLong constant) {
+ stack.push(constant);
+ constant.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitConstantMethodref(ConstantMethodref constant) {
+ stack.push(constant);
+ constant.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitConstantNameAndType(ConstantNameAndType constant) {
+ stack.push(constant);
+ constant.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitConstantString(ConstantString constant) {
+ stack.push(constant);
+ constant.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitConstantUtf8(ConstantUtf8 constant) {
+ stack.push(constant);
+ constant.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitInnerClasses(InnerClasses ic) {
+ stack.push(ic);
+ ic.accept(visitor);
+
+ InnerClass[] ics = ic.getInnerClasses();
+ for(int i=0; i < ics.length; i++)
+ ics[i].accept(this);
+ stack.pop();
+ }
+
+ public void visitInnerClass(InnerClass inner) {
+ stack.push(inner);
+ inner.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitDeprecated(Deprecated attribute) {
+ stack.push(attribute);
+ attribute.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitSignature(Signature attribute) {
+ stack.push(attribute);
+ attribute.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitSourceFile(SourceFile attribute) {
+ stack.push(attribute);
+ attribute.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitSynthetic(Synthetic attribute) {
+ stack.push(attribute);
+ attribute.accept(visitor);
+ stack.pop();
+ }
+
+ public void visitUnknown(Unknown attribute) {
+ stack.push(attribute);
+ attribute.accept(visitor);
+ stack.pop();
+ }
+}