content: /*
   *  This file is part of AndroidIDE.
   *
   *  AndroidIDE is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  
  /*
   * reserved comment block
   * DO NOT REMOVE OR ALTER!
   */
  package jaxp.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 jaxp.sun.org.apache.bcel.internal.classfile.*;
  
  import jaxp.sun.org.apache.bcel.internal.classfile.CodeException;
  
  /**
   * 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 final void setStartPC(InstructionHandle start_pc) {
      BranchInstruction.notifyTargetChanging(this.start_pc, this);
      this.start_pc = start_pc;
      BranchInstruction.notifyTargetChanged(this.start_pc, this);
    }
  
    /* Set end of handler
     * @param end_pc End of handled region (inclusive)
     */
    public final void setEndPC(InstructionHandle end_pc) {
      BranchInstruction.notifyTargetChanging(this.end_pc, this);
      this.end_pc = end_pc;
      BranchInstruction.notifyTargetChanged(this.end_pc, this);
    }
  
    /* Set handler code
     * @param handler_pc Start of handler
     */
    public final void setHandlerPC(InstructionHandle handler_pc) {
      BranchInstruction.notifyTargetChanging(this.handler_pc, this);
      this.handler_pc = handler_pc;
      BranchInstruction.notifyTargetChanged(this.handler_pc, this);
    }
  
    /**
     * @param old_ih old target, either start or end
     * @param new_ih new target
     */
    @Override
    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
     */
    @Override
    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; }
  
    @Override
    public String toString() {
      return "CodeExceptionGen(" + start_pc + ", " + end_pc + ", " + handler_pc + ")";
    }
  
    @Override
    public Object clone() {
      try {
        return super.clone();
      } catch(CloneNotSupportedException e) {
        System.err.println(e);
        return null;
      }
    }
  }
  