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Mercurial (b6d82b1a6b02)

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: set ts=8 sts=2 et sw=2 tw=80:
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/*
 * Internal header for definitions shared between the verifier and jsapi tests.
 */

#ifndef gc_Verifier_h
#define gc_Verifier_h

#include "gc/Cell.h"

namespace js {
namespace gc {

// Like gc::MarkColor but allows the possibility of the cell being
// unmarked.
enum class CellColor : uint8_t {
  White = 0,
  Gray = uint8_t(MarkColor::Gray),
  Black = uint8_t(MarkColor::Black)
};

static constexpr CellColor AllCellColors[] = {CellColor::White, CellColor::Gray,
                                              CellColor::Black};

static constexpr CellColor MarkedCellColors[] = {CellColor::Gray,
                                                 CellColor::Black};

inline CellColor GetCellColor(Cell* cell) {
  if (cell->isMarkedBlack()) {
    return CellColor::Black;
  }

  if (cell->isMarkedGray()) {
    return CellColor::Gray;
  }

  return CellColor::White;
}

inline CellColor ExpectedWeakMapValueColor(CellColor keyColor,
                                           CellColor mapColor) {
  return Min(keyColor, mapColor);
}

inline CellColor ExpectedWeakMapKeyColor(CellColor mapColor,
                                         CellColor delegateColor) {
  return Min(mapColor, delegateColor);
}

inline CellColor ExpectedKeyAndDelegateColor(CellColor keyColor,
                                             CellColor delegateColor) {
  return Max(keyColor, delegateColor);
}

}  // namespace gc
}  // namespace js

#endif /* gc_Verifier_h */