ASM: a very small and fast Java bytecode manipulation framework
Copyright (c) 2000-2011 INRIA, France Telecom
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. Neither the name of the copyright holders nor the names of its
   contributors may be used to endorse or promote products derived from
   this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS 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 COPYRIGHT OWNER OR 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.
/***
 * ASM: a very small and fast Java bytecode manipulation framework
 * Copyright (c) 2000-2011 INRIA, France Telecom
 * 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. Neither the name of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS 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 COPYRIGHT OWNER OR 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.
 */
package org.objectweb.asm.tree;

import java.util.List;

import org.objectweb.asm.MethodVisitor;

A node that represents a try catch block.
Author:
Eric Bruneton/**
 * A node that represents a try catch block.
 * 
 * @author Eric Bruneton
 */
public class TryCatchBlockNode {

    
Beginning of the exception handler's scope (inclusive).
/**
     * Beginning of the exception handler's scope (inclusive).
     */
    public LabelNode start;

    
End of the exception handler's scope (exclusive).
/**
     * End of the exception handler's scope (exclusive).
     */
    public LabelNode end;

    
Beginning of the exception handler's code.
/**
     * Beginning of the exception handler's code.
     */
    public LabelNode handler;

    
Internal name of the type of exceptions handled by the handler. May be
null to catch any exceptions (for "finally" blocks).
/**
     * Internal name of the type of exceptions handled by the handler. May be
     * <tt>null</tt> to catch any exceptions (for "finally" blocks).
     */
    public String type;

    
The runtime visible type annotations on the exception handler type. This list is a list of TypeAnnotationNode objects. May be null.
@associates
org.objectweb.asm.tree.TypeAnnotationNode
@label
visible/**
     * The runtime visible type annotations on the exception handler type. This
     * list is a list of {@link TypeAnnotationNode} objects. May be
     * <tt>null</tt>.
     * 
     * @associates org.objectweb.asm.tree.TypeAnnotationNode
     * @label visible
     */
    public List<TypeAnnotationNode> visibleTypeAnnotations;

    
The runtime invisible type annotations on the exception handler type. This list is a list of TypeAnnotationNode objects. May be null.
@associates
org.objectweb.asm.tree.TypeAnnotationNode
@label
invisible/**
     * The runtime invisible type annotations on the exception handler type.
     * This list is a list of {@link TypeAnnotationNode} objects. May be
     * <tt>null</tt>.
     * 
     * @associates org.objectweb.asm.tree.TypeAnnotationNode
     * @label invisible
     */
    public List<TypeAnnotationNode> invisibleTypeAnnotations;

    
Constructs a new TryCatchBlockNode. 
Params:
start – 
           beginning of the exception handler's scope (inclusive).
end – 
           end of the exception handler's scope (exclusive).
handler – 
           beginning of the exception handler's code.
type – 
           internal name of the type of exceptions handled by the
           handler, or null to catch any exceptions (for
           "finally" blocks)./**
     * Constructs a new {@link TryCatchBlockNode}.
     * 
     * @param start
     *            beginning of the exception handler's scope (inclusive).
     * @param end
     *            end of the exception handler's scope (exclusive).
     * @param handler
     *            beginning of the exception handler's code.
     * @param type
     *            internal name of the type of exceptions handled by the
     *            handler, or <tt>null</tt> to catch any exceptions (for
     *            "finally" blocks).
     */
    public TryCatchBlockNode(final LabelNode start, final LabelNode end,
            final LabelNode handler, final String type) {
        this.start = start;
        this.end = end;
        this.handler = handler;
        this.type = type;
    }

    
Updates the index of this try catch block in the method's list of try
catch block nodes. This index maybe stored in the 'target' field of the
type annotations of this block.
Params:
index – 
           the new index of this try catch block in the method's list of
           try catch block nodes./**
     * Updates the index of this try catch block in the method's list of try
     * catch block nodes. This index maybe stored in the 'target' field of the
     * type annotations of this block.
     * 
     * @param index
     *            the new index of this try catch block in the method's list of
     *            try catch block nodes.
     */
    public void updateIndex(final int index) {
        int newTypeRef = 0x42000000 | (index << 8);
        if (visibleTypeAnnotations != null) {
            for (TypeAnnotationNode tan : visibleTypeAnnotations) {
                tan.typeRef = newTypeRef;
            }
        }
        if (invisibleTypeAnnotations != null) {
            for (TypeAnnotationNode tan : invisibleTypeAnnotations) {
                tan.typeRef = newTypeRef;
            }
        }
    }

    
Makes the given visitor visit this try catch block.
Params:
mv – 
           a method visitor./**
     * Makes the given visitor visit this try catch block.
     * 
     * @param mv
     *            a method visitor.
     */
    public void accept(final MethodVisitor mv) {
        mv.visitTryCatchBlock(start.getLabel(), end.getLabel(),
                handler == null ? null : handler.getLabel(), type);
        int n = visibleTypeAnnotations == null ? 0 : visibleTypeAnnotations
                .size();
        for (int i = 0; i < n; ++i) {
            TypeAnnotationNode an = visibleTypeAnnotations.get(i);
            an.accept(mv.visitTryCatchAnnotation(an.typeRef, an.typePath,
                    an.desc, true));
        }
        n = invisibleTypeAnnotations == null ? 0 : invisibleTypeAnnotations
                .size();
        for (int i = 0; i < n; ++i) {
            TypeAnnotationNode an = invisibleTypeAnnotations.get(i);
            an.accept(mv.visitTryCatchAnnotation(an.typeRef, an.typePath,
                    an.desc, false));
        }
    }
}