jaroslav@288: /*
jaroslav@288:  * To change this template, choose Tools | Templates
jaroslav@288:  * and open the template in the editor.
jaroslav@288:  */
jaroslav@288: package org.apidesign.javap;
jaroslav@288: 
jaroslav@288: /**
jaroslav@288:  *
jaroslav@288:  * @author Jaroslav Tulach <jtulach@netbeans.org>
jaroslav@288:  */
jaroslav@288: public final class TrapDataIterator {
jaroslav@288:     private final java.util.Map<Short, TrapData> exStart = new java.util.HashMap<Short, TrapData>();
jaroslav@288:     private final java.util.Map<Short, TrapData> exStop = new java.util.HashMap<Short, TrapData>();
jaroslav@288:     private final java.util.Deque<TrapData> current = new java.util.ArrayDeque<TrapData>();
jaroslav@288:     
jaroslav@288:     TrapDataIterator(Vector exceptionTable) {
jaroslav@288:         for (int i=0 ; i < exceptionTable.size(); i++) {
jaroslav@288:             final TrapData td = (TrapData)exceptionTable.elementAt(i);
jaroslav@288:             exStart.put(td.start_pc, td);
jaroslav@288:             exStop.put(td.end_pc, td);
jaroslav@288:         }
jaroslav@288:     }
jaroslav@288: 
jaroslav@288:     public void advanceTo(int i) {
jaroslav@288:         TrapData e = exStart.get((short) i);
jaroslav@288:         if (e != null) {
jaroslav@288:             current.addFirst(e);
jaroslav@288:         }
jaroslav@288:         e = exStop.get((short) i);
jaroslav@288:         if (e != null) {
jaroslav@288:             current.remove(e);
jaroslav@288:         }
jaroslav@288:     }
jaroslav@288: 
jaroslav@288:     public boolean useTry() {
jaroslav@288:         return !current.isEmpty();
jaroslav@288:     }
jaroslav@288: 
jaroslav@288:     public TrapData[] current() {
jaroslav@288:         return current.toArray(new TrapData[0]);
jaroslav@288:     }
jaroslav@288: }