package com.coderising.jvm.attr;
import java.util.ArrayList;
import java.util.List;
import com.coderising.jvm.loader.ByteCodeIterator;
@SuppressWarnings("unused")
public class LineNumberTable extends AttributeInfo {
List<LineNumberItem> items = new ArrayList<LineNumberItem>();
private static class LineNumberItem{
int startPC;
int lineNum;
public int getStartPC() {
return startPC;
}
public void setStartPC(int startPC) {
this.startPC = startPC;
}
public int getLineNum() {
return lineNum;
}
public void setLineNum(int lineNum) {
this.lineNum = lineNum;
}
}
public void addLineNumberItem(LineNumberItem item){
this.items.add(item);
}
public LineNumberTable(int attrNameIndex, int attrLen) {
super(attrNameIndex, attrLen);
}
public static LineNumberTable parse(ByteCodeIterator iter){
int nameIndex = iter.nextU2ToInt();
int attrLen = iter.nextU4ToInt();
LineNumberTable lineNumberTable = new LineNumberTable(nameIndex,attrLen);
int tableLen = iter.nextU2ToInt();
for (int i = 0; i < tableLen; i++) {
int startPC = iter.nextU2ToInt();
int lineNum = iter.nextU2ToInt();
LineNumberItem item = new LineNumberItem();
item.setLineNum(startPC);
item.setLineNum(lineNum);
lineNumberTable.addLineNumberItem(item);
}
return lineNumberTable;
}
}