ParameterToken.cs

using System.Runtime.InteropServices;

namespace System.Reflection.Emit
{
    [Serializable]
    [ComVisible(true)]
    public struct ParameterToken
    {
        public static readonly ParameterToken Empty;

        internal int m_tkParameter;

        public int Token => m_tkParameter;

        internal ParameterToken(int tkParam)
        {
            m_tkParameter = tkParam;
        }

        public override int GetHashCode()
        {
            return m_tkParameter;
        }

        public override bool Equals(object obj)
        {
            if (obj is ParameterToken)
            {
                return Equals((ParameterToken)obj);
            }
            return false;
        }

        public bool Equals(ParameterToken obj)
        {
            return obj.m_tkParameter == m_tkParameter;
        }

        public static bool operator ==(ParameterToken a, ParameterToken b)
        {
            return a.Equals(b);
        }

        public static bool operator !=(ParameterToken a, ParameterToken b)
        {
            return !(a == b);
        }
    }
}