text: /*
   * Copyright (c) 2020, Matthew Olsson <matthewcolsson@gmail.com>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #pragma once
  
  #include <AK/Format.h>
  #include <AK/Types.h>
  
  namespace JS {
  
  struct Attribute {
      enum {
          Configurable = 1 << 0,
          Enumerable = 1 << 1,
          Writable = 1 << 2,
          HasGetter = 1 << 3,
          HasSetter = 1 << 4,
          HasConfigurable = 1 << 5,
          HasEnumerable = 1 << 6,
          HasWritable = 1 << 7,
      };
  };
  
  class PropertyAttributes {
  public:
      PropertyAttributes(u8 bits = 0)
      {
          m_bits = bits;
          if (bits & Attribute::Configurable)
              m_bits |= Attribute::HasConfigurable;
          if (bits & Attribute::Enumerable)
              m_bits |= Attribute::HasEnumerable;
          if (bits & Attribute::Writable)
              m_bits |= Attribute::HasWritable;
      }
  
      bool is_empty() const { return !m_bits; }
  
      bool has_configurable() const { return m_bits & Attribute::HasConfigurable; }
      bool has_enumerable() const { return m_bits & Attribute::HasEnumerable; }
      bool has_writable() const { return m_bits & Attribute::HasWritable; }
      bool has_getter() const { return m_bits & Attribute::HasGetter; }
      bool has_setter() const { return m_bits & Attribute::HasSetter; }
  
      bool is_configurable() const { return m_bits & Attribute::Configurable; }
      bool is_enumerable() const { return m_bits & Attribute::Enumerable; }
      bool is_writable() const { return m_bits & Attribute::Writable; }
  
      void set_has_configurable() { m_bits |= Attribute::HasConfigurable; }
      void set_has_enumerable() { m_bits |= Attribute::HasEnumerable; }
      void set_has_writable() { m_bits |= Attribute::HasWritable; }
      void set_configurable() { m_bits |= Attribute::Configurable; }
      void set_enumerable() { m_bits |= Attribute::Enumerable; }
      void set_writable() { m_bits |= Attribute::Writable; }
      void set_has_getter() { m_bits |= Attribute::HasGetter; }
      void set_has_setter() { m_bits |= Attribute::HasSetter; }
  
      bool operator==(const PropertyAttributes& other) const { return m_bits == other.m_bits; }
      bool operator!=(const PropertyAttributes& other) const { return m_bits != other.m_bits; }
  
      u8 bits() const { return m_bits; }
  
  private:
      u8 m_bits;
  };
  
  const PropertyAttributes default_attributes = Attribute::Configurable | Attribute::Writable | Attribute::Enumerable;
  
  }
  
  namespace AK {
  
  template<>
  struct Formatter<JS::PropertyAttributes> : Formatter<u8> {
      void format(TypeErasedFormatParams& params, FormatBuilder& builder, const JS::PropertyAttributes& attributes)
      {
          Formatter<u8>::format(params, builder, attributes.bits());
      }
  };
  
  }
  