option.h

// Copyright (C) 2024 Paul T. Kühner
//
// This file is part of DOLFINX (https://www.fenicsproject.org)
//
// SPDX-License-Identifier:    LGPL-3.0-or-later
 
#pragma once
 
#include <cstdint>
#include <type_traits>
 
namespace dolfinx::refinement
{
enum class Option : std::uint8_t
{
  none = 0b00,         
  parent_facet = 0b01, 
  parent_cell
  = 0b10, 
  parent_cell_and_facet = 0b11 /*< Both cell and facet parent data */
};

inline constexpr Option operator|(Option a, Option b)
{
  using bitmask_t = std::underlying_type_t<Option>;
  bitmask_t a_native = static_cast<bitmask_t>(a);
  bitmask_t b_native = static_cast<bitmask_t>(b);
  return static_cast<Option>(a_native | b_native);
}

inline constexpr bool option_parent_facet(Option a)
{
  using bitmask_t = std::underlying_type_t<Option>;
  bitmask_t a_native = static_cast<bitmask_t>(a);
  bitmask_t facet_native = static_cast<bitmask_t>(Option::parent_facet);
  return (a_native & facet_native) == facet_native;
}

inline constexpr bool option_parent_cell(Option a)
{
  using bitmask_t = std::underlying_type_t<Option>;
  bitmask_t a_native = static_cast<bitmask_t>(a);
  bitmask_t facet_native = static_cast<bitmask_t>(Option::parent_cell);
  return (a_native & facet_native) == facet_native;
}
} // namespace dolfinx::refinement