OSPlatform.cs

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using System.Diagnostics.CodeAnalysis;
 
namespace System.Runtime.InteropServices;
 
public readonly struct OSPlatform : IEquatable<OSPlatform>
{
    public static OSPlatform FreeBSD { get; } = new OSPlatform("FREEBSD");
 
 
    public static OSPlatform Linux { get; } = new OSPlatform("LINUX");
 
 
    public static OSPlatform OSX { get; } = new OSPlatform("OSX");
 
 
    public static OSPlatform Windows { get; } = new OSPlatform("WINDOWS");
 
 
    internal string Name { get; }
 
    private OSPlatform(string osPlatform)
    {
        if (osPlatform == null)
        {
            throw new ArgumentNullException("osPlatform");
        }
        if (osPlatform.Length == 0)
        {
            throw new ArgumentException(System.SR.Argument_EmptyValue, "osPlatform");
        }
        Name = osPlatform;
    }
 
    public static OSPlatform Create(string osPlatform)
    {
        return new OSPlatform(osPlatform);
    }
 
    public bool Equals(OSPlatform other)
    {
        return Equals(other.Name);
    }
 
    internal bool Equals(string other)
    {
        return string.Equals(Name, other, StringComparison.OrdinalIgnoreCase);
    }
 
    public override bool Equals([NotNullWhen(true)] object? obj)
    {
        if (obj is OSPlatform other)
        {
            return Equals(other);
        }
        return false;
    }
 
    public override int GetHashCode()
    {
        if (Name != null)
        {
            return StringComparer.OrdinalIgnoreCase.GetHashCode(Name);
        }
        return 0;
    }
 
    public override string ToString()
    {
        return Name ?? string.Empty;
    }
 
    public static bool operator ==(OSPlatform left, OSPlatform right)
    {
        return left.Equals(right);
    }
 
    public static bool operator !=(OSPlatform left, OSPlatform right)
    {
        return !(left == right);
    }
}