/* * ConstantValueAttribute.java 1.4 02/09/27 * * Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved. * * This software is the confidential and proprietary information of Sun * Microsystems, Inc. ("Confidential Information"). You shall not * disclose such Confidential Information and shall use it only in * accordance with the terms of the license agreement you entered into * with Sun. * * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR * PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING * THIS SOFTWARE OR ITS DERIVATIVES. * Use is subject to license terms. */ package components; import java.io.DataOutput; import java.io.DataInput; import java.io.IOException; import util.DataFormatException; /* * A class to represent the ConstantValue Attribute * of a field */ public class ConstantValueAttribute extends Attribute { public ConstantObject data; public ConstantValueAttribute( UnicodeConstant name, int l, ConstantObject d ){ super( name, l ); data = d; } public void externalize( ConstantPool p ){ super.externalize( p ); data = p.dup( data ); } protected int writeData( DataOutput o ) throws IOException{ o.writeShort( data.index ); return 2; } public void countConstantReferences( boolean isRelocatable ){ super.countConstantReferences( isRelocatable ); data.incReference(); } public static Attribute readAttribute( DataInput i, ConstantObject globals[] ) throws IOException{ UnicodeConstant name; name = (UnicodeConstant)globals[i.readUnsignedShort()]; return finishReadAttribute( i, name, globals ); } // // for those cases where we already read the name index // and know that its not something requiring special handling. // public static Attribute finishReadAttribute( DataInput i, UnicodeConstant name, ConstantObject globals[] ) throws IOException { int l; int n; ConstantObject d; l = i.readInt(); n = i.readUnsignedShort(); d = globals[n]; return new ConstantValueAttribute( name, l, d ); } }
