1 /*
   2  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   3  *
   4  * This code is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License version 2 only, as
   6  * published by the Free Software Foundation.  Oracle designates this
   7  * particular file as subject to the "Classpath" exception as provided
   8  * by Oracle in the LICENSE file that accompanied this code.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  */
  24 
  25 /*
  26  * This file is available under and governed by the GNU General Public
  27  * License version 2 only, as published by the Free Software Foundation.
  28  * However, the following notice accompanied the original version of this
  29  * file:
  30  *
  31  * ASM: a very small and fast Java bytecode manipulation framework
  32  * Copyright (c) 2000-2011 INRIA, France Telecom
  33  * All rights reserved.
  34  *
  35  * Redistribution and use in source and binary forms, with or without
  36  * modification, are permitted provided that the following conditions
  37  * are met:
  38  * 1. Redistributions of source code must retain the above copyright
  39  *    notice, this list of conditions and the following disclaimer.
  40  * 2. Redistributions in binary form must reproduce the above copyright
  41  *    notice, this list of conditions and the following disclaimer in the
  42  *    documentation and/or other materials provided with the distribution.
  43  * 3. Neither the name of the copyright holders nor the names of its
  44  *    contributors may be used to endorse or promote products derived from
  45  *    this software without specific prior written permission.
  46  *
  47  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  48  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  49  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  50  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  51  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  52  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  53  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  54  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  55  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  56  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  57  * THE POSSIBILITY OF SUCH DAMAGE.
  58  */
  59 package jdk.internal.org.objectweb.asm.tree;
  60 
  61 import jdk.internal.org.objectweb.asm.MethodVisitor;
  62 
  63 /**
  64  * A node that represents a try catch block.
  65  *
  66  * @author Eric Bruneton
  67  */
  68 public class TryCatchBlockNode {
  69 
  70     /**
  71      * Beginning of the exception handler's scope (inclusive).
  72      */
  73     public LabelNode start;
  74 
  75     /**
  76      * End of the exception handler's scope (exclusive).
  77      */
  78     public LabelNode end;
  79 
  80     /**
  81      * Beginning of the exception handler's code.
  82      */
  83     public LabelNode handler;
  84 
  85     /**
  86      * Internal name of the type of exceptions handled by the handler. May be
  87      * <tt>null</tt> to catch any exceptions (for "finally" blocks).
  88      */
  89     public String type;
  90 
  91     /**
  92      * Constructs a new {@link TryCatchBlockNode}.
  93      *
  94      * @param start beginning of the exception handler's scope (inclusive).
  95      * @param end end of the exception handler's scope (exclusive).
  96      * @param handler beginning of the exception handler's code.
  97      * @param type internal name of the type of exceptions handled by the
  98      *        handler, or <tt>null</tt> to catch any exceptions (for "finally"
  99      *        blocks).
 100      */
 101     public TryCatchBlockNode(
 102         final LabelNode start,
 103         final LabelNode end,
 104         final LabelNode handler,
 105         final String type)
 106     {
 107         this.start = start;
 108         this.end = end;
 109         this.handler = handler;
 110         this.type = type;
 111     }
 112 
 113     /**
 114      * Makes the given visitor visit this try catch block.
 115      *
 116      * @param mv a method visitor.
 117      */
 118     public void accept(final MethodVisitor mv) {
 119         mv.visitTryCatchBlock(start.getLabel(), end.getLabel(), handler == null
 120                 ? null
 121                 : handler.getLabel(), type);
 122     }
 123 }