Created
September 18, 2016 21:09
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Type-Safe Enum Pattern applied for representing a bit in C#
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using System; | |
using System.Collections.Generic; | |
using System.Linq; | |
using System.Text; | |
using System.Threading.Tasks; | |
namespace OzCodeLinqTests | |
{ | |
public sealed class Bit : IEquatable<Bit>, IComparable, IComparable<Bit> | |
{ | |
public static Bit Off = new Bit(false, "Off"); | |
public static Bit On = new Bit(true, "On"); | |
private readonly int _value; | |
private readonly bool _isOn; | |
private readonly string _name; | |
private static readonly string[] Names = { Off._name, On._name }; | |
private static readonly Bit[] Values = { Off, On }; | |
private Bit(bool isOn, string name) | |
{ | |
_isOn = isOn; | |
_name = name; | |
_value = Convert.ToInt32(_isOn); | |
} | |
public static implicit operator bool(Bit bit) => bit._isOn; | |
public static implicit operator Bit(bool bit) => bit ? On : Off; | |
public static implicit operator int(Bit bit) => bit._value; | |
public static implicit operator string(Bit bit) => bit._name; | |
public static Bit operator |(Bit first, Bit second) => first ? On : second; | |
public static Bit operator &(Bit first, Bit second) => first ? second : On; | |
public static Bit operator ~(Bit bit) => bit ? Off : On; | |
public static Bit operator !(Bit bit) => ~bit; | |
public static bool operator ==(Bit first, Bit second) => first != null && first.Equals(second); | |
public static bool operator !=(Bit first, Bit second) => (object)first != null && ((object)second != null && !first.Equals(second)); | |
public static string[] GetNames() => Names; | |
public static Bit[] GetValues() => Values; | |
public override string ToString() => _value.ToString(); | |
public override int GetHashCode() => _value; | |
public override bool Equals(object obj) => Equals(obj as Bit); | |
public bool Equals(Bit other) => null != other && _isOn == other._isOn; | |
public int CompareTo(object obj) => CompareTo((Bit)obj); | |
public int CompareTo(Bit other) => _value - other._value; | |
} | |
} |
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