#pragma once

//
// This file is distributed under the MIT License. See LICENSE.md for details.
//

#include <algorithm>

template<typename LE>
struct SetUnionLattice {
  using LatticeElement = LE;

  static LatticeElement
  combineValues(const LatticeElement &Left, const LatticeElement &Right) {
    LatticeElement Result;
    std::set_union(Left.begin(),
                   Left.end(),
                   Right.begin(),
                   Right.end(),
                   std::inserter(Result, Result.begin()));
    return Result;
  }

  static bool
  isLessOrEqual(const LatticeElement &Left, const LatticeElement &Right) {
    if (Left.size() > Right.size())
      return false;
    return std::includes(Right.begin(), Right.end(), Left.begin(), Left.end());
  }
};