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/* Qilin - a Java Pointer Analysis Framework
 * Copyright (C) 2021-2030 Qilin developers
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3.0 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 Lesser Public License for more details.
 *
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 */

package qilin.util.collect;

import java.util.HashMap;
import java.util.Map;
import java.util.Set;

public class SetFactory {
  private final Map, Set> sets;

  public SetFactory() {
    this.sets = new HashMap<>();
  }

  public Set get(final Set set) {
    if (!this.sets.containsKey(set)) {
      this.sets.put(set, set);
    }
    return this.sets.get(set);
  }
}