/*
* @(#)LineNumberTableAttribute.java 1.9 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.DataInput;
import java.io.IOException;
import util.DataFormatException;
/*
* A class to represent the LineNumber table Attribute
* of a method's code.
*/
public
class LineNumberTableAttribute extends Attribute
{
public LineNumberTableEntry data[];
public
LineNumberTableAttribute( UnicodeConstant name, int l, LineNumberTableEntry d[] ){
super( name, l );
data = d;
}
protected int
writeData( DataOutput o ) throws IOException{
int n = data.length;
o.writeShort( n );
for ( int i = 0; i < n; i++ ){
data[i].write( o );
}
return 2+LineNumberTableEntry.size*n;
}
public static Attribute
readAttribute( DataInput i, ConstantObject t[] ) throws IOException{
UnicodeConstant name;
name = (UnicodeConstant)t[i.readUnsignedShort()];
return finishReadAttribute( i, name );
}
/**
* for those cases where we already read the name index
* and know that its not something requiring special handling.
*/
public static Attribute
finishReadAttribute(DataInput in, UnicodeConstant name) throws IOException {
int l;
int n;
LineNumberTableEntry d[];
l = in.readInt();
n = in.readUnsignedShort();
d = new LineNumberTableEntry[n];
for (int i = 0; i < n; i++) {
d[i] = new LineNumberTableEntry(in.readUnsignedShort(), in.readUnsignedShort());
}
return new LineNumberTableAttribute(name, l, d);
}
}