// ASM: a very small and fast Java bytecode manipulation framework
// Copyright (c) 2000-2011 INRIA, France Telecom
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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 {

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

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

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

  
The internal name of the type of exceptions handled by the handler. May be null to catch any exceptions (for "finally" blocks). /**
   * The internal name of the type of exceptions handled by the handler. May be {@literal null} to
   * catch any exceptions (for "finally" blocks).
   */
  public String type;

  
The runtime visible type annotations on the exception handler type. May be null. /** The runtime visible type annotations on the exception handler type. May be {@literal null}. */
  public List<TypeAnnotationNode> visibleTypeAnnotations;

  
The runtime invisible type annotations on the exception handler type. May be null. /**
   * The runtime invisible type annotations on the exception handler type. May be {@literal null}.
   */
  public List<TypeAnnotationNode> invisibleTypeAnnotations;

  
Constructs a new TryCatchBlockNode. 
Params:
start – the beginning of the exception handler's scope (inclusive).
end – the end of the exception handler's scope (exclusive).
handler – the beginning of the exception handler's code.
type – the 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 the beginning of the exception handler's scope (inclusive).
   * @param end the end of the exception handler's scope (exclusive).
   * @param handler the beginning of the exception handler's code.
   * @param type the internal name of the type of exceptions handled by the handler, or {@literal
   *     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.
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 (int i = 0, n = visibleTypeAnnotations.size(); i < n; ++i) {
        visibleTypeAnnotations.get(i).typeRef = newTypeRef;
      }
    }
    if (invisibleTypeAnnotations != null) {
      for (int i = 0, n = invisibleTypeAnnotations.size(); i < n; ++i) {
        invisibleTypeAnnotations.get(i).typeRef = newTypeRef;
      }
    }
  }

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