/* Copyright (C) 2004-2007 Sami Koivu
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package net.sf.rej.java.attribute;
import java.util.ArrayList;
import java.util.List;
import net.sf.rej.java.LocalVariable;
import net.sf.rej.java.constantpool.ConstantPool;
import net.sf.rej.java.instruction.Label;
import net.sf.rej.util.ByteArrayByteParser;
import net.sf.rej.util.ByteParser;
import net.sf.rej.util.ByteSerializer;
public class LocalVariableTableAttribute extends Attribute {
private List<LocalVariable> localVariables = new ArrayList<LocalVariable>();
public LocalVariableTableAttribute(int nameIndex, ConstantPool pool) {
super(nameIndex, pool);
}
public LocalVariable getLocalVariable(int index, int pc) {
for (LocalVariable lv : this.localVariables) {
if (lv.getIndex() == index && lv.isInRange(pc)) {
return lv;
}
}
return null; // no local variable found for the given index
}
public List getLocalVariable(int pc) {
List<LocalVariable> al = new ArrayList<LocalVariable>();
for (LocalVariable lv : this.localVariables) {
if (lv.getStartPc() == pc) {
al.add(lv);
}
}
return al;
}
public List<LocalVariable> getLocalVariables() {
List<LocalVariable> al = new ArrayList<LocalVariable>();
al.addAll(this.localVariables);
return al;
}
public List<Label> getVariableLabels() {
List<Label> labels = new ArrayList<Label>();
for (LocalVariable lv : this.localVariables) {
labels.addAll(lv.getLabels());
}
return labels;
}
@Override
public byte[] getPayload() {
ByteSerializer ser = new ByteSerializer(true);
ser.addShort(this.localVariables.size());
for (LocalVariable lv : this.localVariables) {
ser.addBytes(lv.getData());
}
return ser.getBytes();
}
@Override
public void setPayload(byte[] data) {
ByteParser parser = new ByteArrayByteParser(data);
parser.setBigEndian(true);
int length = parser.getShortAsInt();
for (int i = 0; i < length; i++) {
LocalVariable lv = new LocalVariable(parser, pool);
this.localVariables.add(lv);
}
}
@Override
public String toString() {
return "LocalVariableTableAttribute(" + this.localVariables.size() + " definitions)";
}
}