/*
* @(#)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();
}
}