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/***
* 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 scouter.org.objectweb.asm.tree;
import java.util.List;
import scouter.org.objectweb.asm.MethodVisitor;
/**
* A node that represents a try catch block.
*
* @author Eric Bruneton
*/
public class TryCatchBlockNode {
/**
* Beginning of the exception handler's scope (inclusive).
*/
public LabelNode start;
/**
* End of the exception handler's scope (exclusive).
*/
public LabelNode end;
/**
* 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).
*/
public String type;
/**
* The runtime visible type annotations on the exception handler type. This
* list is a list of {@link TypeAnnotationNode} objects. May be
* null.
*
* @associates scouter.org.objectweb.asm.tree.TypeAnnotationNode
* @label visible
*/
public List visibleTypeAnnotations;
/**
* The runtime invisible type annotations on the exception handler type.
* This list is a list of {@link TypeAnnotationNode} objects. May be
* null.
*
* @associates scouter.org.objectweb.asm.tree.TypeAnnotationNode
* @label invisible
*/
public List invisibleTypeAnnotations;
/**
* 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 null 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.
*
* @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.
*
* @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));
}
}
}
