/*
 * Copyright (c) 2002 - 2006 IBM Corporation.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 */
package com.ibm.wala.util.intset;

import java.util.TreeSet;

/** */
public class SemiSparseMutableIntSetFactory
    implements MutableIntSetFactory<SemiSparseMutableIntSet> {

  /** @throws IllegalArgumentException if set is null */
  @Override
  public SemiSparseMutableIntSet make(int[] set) {
    if (set == null) {
      throw new IllegalArgumentException("set is null");
    }
    if (set.length == 0) {
      return make();
    } else {
      // XXX not very efficient.
      TreeSet<Integer> T = new TreeSet<>();
      for (int element : set) {
        T.add(element);
      }
      SemiSparseMutableIntSet result = new SemiSparseMutableIntSet();
      for (Integer I : T) {
        result.add(I);
      }
      return result;
    }
  }

  @Override
  public SemiSparseMutableIntSet parse(String string) throws NumberFormatException {
    int[] data = SparseIntSet.parseIntArray(string);
    SemiSparseMutableIntSet result = new SemiSparseMutableIntSet();
    for (int element : data) result.add(element);
    return result;
  }

  /*
   * @see com.ibm.wala.util.intset.MutableIntSetFactory#make(com.ibm.wala.util.intset.IntSet)
   */
  @Override
  public SemiSparseMutableIntSet makeCopy(IntSet x) {
    SemiSparseMutableIntSet y = new SemiSparseMutableIntSet();
    y.copySet(x);
    return y;
  }

  /*
   * @see com.ibm.wala.util.intset.MutableIntSetFactory#make()
   */
  @Override
  public SemiSparseMutableIntSet make() {
    return new SemiSparseMutableIntSet();
  }
}
