--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jaxp/src/share/classes/com/sun/org/apache/bcel/internal/generic/CodeExceptionGen.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,205 @@
+/*
+ * reserved comment block
+ * DO NOT REMOVE OR ALTER!
+ */
+package com.sun.org.apache.bcel.internal.generic;
+
+/* ====================================================================
+ * 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 com.sun.org.apache.bcel.internal.Constants;
+import com.sun.org.apache.bcel.internal.classfile.*;
+
+/**
+ * This class represents an exception handler, i.e., specifies the region where
+ * a handler is active and an instruction where the actual handling is done.
+ * pool as parameters. Opposed to the JVM specification the end of the handled
+ * region is set to be inclusive, i.e. all instructions between start and end
+ * are protected including the start and end instructions (handles) themselves.
+ * The end of the region is automatically mapped to be exclusive when calling
+ * getCodeException(), i.e., there is no difference semantically.
+ *
+ * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
+ * @see MethodGen
+ * @see CodeException
+ * @see InstructionHandle
+ */
+public final class CodeExceptionGen
+ implements InstructionTargeter, Cloneable, java.io.Serializable {
+ private InstructionHandle start_pc;
+ private InstructionHandle end_pc;
+ private InstructionHandle handler_pc;
+ private ObjectType catch_type;
+
+ /**
+ * Add an exception handler, i.e., specify region where a handler is active and an
+ * instruction where the actual handling is done.
+ *
+ * @param start_pc Start of handled region (inclusive)
+ * @param end_pc End of handled region (inclusive)
+ * @param handler_pc Where handling is done
+ * @param catch_type which exception is handled, null for ANY
+ */
+ public CodeExceptionGen(InstructionHandle start_pc, InstructionHandle end_pc,
+ InstructionHandle handler_pc, ObjectType catch_type) {
+ setStartPC(start_pc);
+ setEndPC(end_pc);
+ setHandlerPC(handler_pc);
+ this.catch_type = catch_type;
+ }
+
+ /**
+ * Get CodeException object.<BR>
+ *
+ * This relies on that the instruction list has already been dumped
+ * to byte code or or that the `setPositions' methods has been
+ * called for the instruction list.
+ *
+ * @param cp constant pool
+ */
+ public CodeException getCodeException(ConstantPoolGen cp) {
+ return new CodeException(start_pc.getPosition(),
+ end_pc.getPosition() + end_pc.getInstruction().getLength(),
+ handler_pc.getPosition(),
+ (catch_type == null)? 0 : cp.addClass(catch_type));
+ }
+
+ /* Set start of handler
+ * @param start_pc Start of handled region (inclusive)
+ */
+ public void setStartPC(InstructionHandle start_pc) {
+ BranchInstruction.notifyTarget(this.start_pc, start_pc, this);
+ this.start_pc = start_pc;
+ }
+
+ /* Set end of handler
+ * @param end_pc End of handled region (inclusive)
+ */
+ public void setEndPC(InstructionHandle end_pc) {
+ BranchInstruction.notifyTarget(this.end_pc, end_pc, this);
+ this.end_pc = end_pc;
+ }
+
+ /* Set handler code
+ * @param handler_pc Start of handler
+ */
+ public void setHandlerPC(InstructionHandle handler_pc) {
+ BranchInstruction.notifyTarget(this.handler_pc, handler_pc, this);
+ this.handler_pc = handler_pc;
+ }
+
+ /**
+ * @param old_ih old target, either start or end
+ * @param new_ih new target
+ */
+ public void updateTarget(InstructionHandle old_ih, InstructionHandle new_ih) {
+ boolean targeted = false;
+
+ if(start_pc == old_ih) {
+ targeted = true;
+ setStartPC(new_ih);
+ }
+
+ if(end_pc == old_ih) {
+ targeted = true;
+ setEndPC(new_ih);
+ }
+
+ if(handler_pc == old_ih) {
+ targeted = true;
+ setHandlerPC(new_ih);
+ }
+
+ if(!targeted)
+ throw new ClassGenException("Not targeting " + old_ih + ", but {" + start_pc + ", " +
+ end_pc + ", " + handler_pc + "}");
+ }
+
+ /**
+ * @return true, if ih is target of this handler
+ */
+ public boolean containsTarget(InstructionHandle ih) {
+ return (start_pc == ih) || (end_pc == ih) || (handler_pc == ih);
+ }
+
+ /** Sets the type of the Exception to catch. Set 'null' for ANY. */
+ public void setCatchType(ObjectType catch_type) { this.catch_type = catch_type; }
+ /** Gets the type of the Exception to catch, 'null' for ANY. */
+ public ObjectType getCatchType() { return catch_type; }
+
+ /** @return start of handled region (inclusive)
+ */
+ public InstructionHandle getStartPC() { return start_pc; }
+
+ /** @return end of handled region (inclusive)
+ */
+ public InstructionHandle getEndPC() { return end_pc; }
+
+ /** @return start of handler
+ */
+ public InstructionHandle getHandlerPC() { return handler_pc; }
+
+ public String toString() {
+ return "CodeExceptionGen(" + start_pc + ", " + end_pc + ", " + handler_pc + ")";
+ }
+
+ public Object clone() {
+ try {
+ return super.clone();
+ } catch(CloneNotSupportedException e) {
+ System.err.println(e);
+ return null;
+ }
+ }
+}