/*
 *  Copyright (C) 2010-2013 JPEXS
 * 
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 * 
 *  This program 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 General Public License for more details.
 * 
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.jpexs.decompiler.flash.action.treemodel;

import java.util.ArrayList;
import java.util.List;

public class ConstantPool {

   public List<List<String>> archive = new ArrayList<List<String>>();
   public List<Integer> archiveCounts = new ArrayList<Integer>();
   public List<String> constants = new ArrayList<String>();
   public int count;

   public ConstantPool() {
   }

   public ConstantPool(List<String> constants) {
      this.constants = constants;
   }

   public void setNew(List<String> constants) {
      archive.add(this.constants);
      this.constants = constants;
      archiveCounts.add(count);
      count = 0;
   }

   @Override
   public String toString() {
      return "" + count + "x " + constants.toString();
   }

   public boolean isEmpty() {
      return constants.isEmpty();
   }

   public void getLastUsed() {
      if (count > 0) {
         return;
      }
      for (int i = archive.size() - 1; i >= 0; i--) {
         if (archiveCounts.get(i) > 0) {
            count = archiveCounts.get(i);
            constants = archive.get(i);
            break;
         }
      }
   }
}