package attr;
import iterator.ByteCodeIterator;
import java.util.ArrayList;
import java.util.List;
/**
* Created by william on 2017/4/12.
*/
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 attributeNameIndex) {
int attributeLength = iter.nextU4ToInt();
int lineNumberTableLength = iter.nextU2ToInt();
LineNumberTable lineNumberTable = new LineNumberTable(attributeNameIndex,attributeLength);
for (int i = 0; i < lineNumberTableLength; i++) {
int start_pc = iter.nextU2ToInt();
int lineNumber = iter.nextU2ToInt();
LineNumberItem lineNumberItem = new LineNumberItem();
lineNumberItem.setLineNum(lineNumber);
lineNumberItem.setStartPC(start_pc);
lineNumberTable.addLineNumberItem(lineNumberItem);
}
return lineNumberTable;
}
}