2.4/dev/core/src/com/google/gwt/dev/asm/tree/TryCatchBlockNode.java

/***
 * ASM: a very small and fast Java bytecode manipulation framework
 * Copyright (c) 2000-2007 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 com.google.gwt.dev.asm.tree;

import com.google.gwt.dev.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
     * <tt>null</tt> to catch any exceptions (for "finally" blocks).
     */
    public String type;

    /**
     * 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;
    }

    /**
     * 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);
    }
}