/*
* LocalVariableTableAttribute.java 1.5 03/01/14
*
* Copyright © 2003 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. 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 LocalVariable table Attribute
* of a method's code.
*/
public
class LocalVariableTableAttribute extends Attribute
{
public LocalVariableTableEntry data[];
public
LocalVariableTableAttribute( UnicodeConstant name, int l, LocalVariableTableEntry d[] ){
super( name, l );
this.data = d;
}
public void
externalize( ConstantPool p ){
super.externalize( p );
for (int i = 0; i < data.length; i++) {
if (data[i].name != null) {
data[i].name = (UnicodeConstant)p.add( data[i].name );
}
if (data[i].sig != null) {
data[i].sig = (UnicodeConstant)p.add( data[i].sig );
}
}
}
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+LocalVariableTableEntry.size*n;
}
public void
countConstantReferences( boolean isRelocatable ){
super.countConstantReferences( isRelocatable );
for (int i = 0; i < data.length; i++) {
data[i].name.incReference();
data[i].sig.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 in, UnicodeConstant name, ConstantObject globals[] ) throws IOException {
int l;
int n;
LocalVariableTableEntry d[];
l = in.readInt();
n = in.readUnsignedShort();
d = new LocalVariableTableEntry[ n ];
for ( int i = 0; i < n; i++ ){
d[i] = new
LocalVariableTableEntry( in.readUnsignedShort(),
in.readUnsignedShort(),
(UnicodeConstant)
globals[in.readUnsignedShort()],
(UnicodeConstant)
globals[in.readUnsignedShort()],
in.readUnsignedShort()
);
}
return new LocalVariableTableAttribute( name, l, d );
}
}
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