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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;

import java.util.Objects;

public class Pair {

  private final T1 first;
  private final T2 second;

  public Pair(T1 first, T2 second) {
    this.first = first;
    this.second = second;
  }

  public T1 getFirst() {
    return first;
  }

  public T2 getSecond() {
    return second;
  }

  @Override
  public int hashCode() {
    return Objects.hash(first, second);
  }

  @Override
  public boolean equals(Object o) {
    if (o instanceof Pair) {
      Pair anoPair = (Pair) o;
      return Objects.equals(first, anoPair.first) && Objects.equals(second, anoPair.second);
    }
    return false;
  }

  @Override
  public String toString() {
    return "<" + first + ", " + second + ">";
  }
}