/* * @(#)ExceptionEntry.java 1.12 06/10/10 * * Copyright 1990-2008 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 only, as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License version 2 for more details (a copy is * included at /legal/license.txt). * * You should have received a copy of the GNU General Public License * version 2 along with this work; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa * Clara, CA 95054 or visit www.sun.com if you need additional * information or have any questions. * */ package components; import java.io.DataOutput; import java.io.IOException; import consts.Const; import util.DataFormatException; /* * An ExceptionEntry represents a range of Java bytecode PC values, * a Java exception type, and an action to take should that exception be * thrown in that range. * * Exception entries are read by components.MethodInfo, though perhaps * that code should be moved here. At least we know how to write ourselves * out. */ public class ExceptionEntry { public ClassConstant catchType; public int startPC, endPC; public int handlerPC; public static final int size = 8; // bytes in class files ExceptionEntry(int startPC, int endPC, int handlerPC, ClassConstant catchType) { this.startPC = startPC; this.endPC = endPC; this.handlerPC = handlerPC; this.catchType = catchType; } public void write( DataOutput o ) throws IOException { o.writeShort( startPC ); o.writeShort( endPC ); o.writeShort( handlerPC ); o.writeShort( (catchType==null) ? 0 : catchType.index ); } public void countConstantReferences( ){ if ( catchType != null ) catchType.incReference(); } }
