SemanticLiterals.cs

using System;
using Waher.Content.Semantic.Model.Literals;
using Waher.Script.Abstraction.Elements;
using Waher.Script.Abstraction.Sets;
 
namespace Waher.Content.Semantic.Model
{
    public class SemanticLiterals : Ring, IOrderedSet
    {
        public static readonly SemanticLiterals Instance = new SemanticLiterals();
 
        public SemanticLiterals()
        {
        }
 
        public override bool Contains(IElement Element)
        {
            return Element is ISemanticLiteral;
        }
 
        public override int? Size => null;
 
        public override bool Equals(object obj)
        {
            return obj.GetType() == typeof(SemanticLiterals);
        }
 
        public override int GetHashCode()
        {
            return typeof(SemanticLiterals).GetHashCode();
        }
 
        public int Compare(IElement x, IElement y)
        {
            if (x is IComparable Left)
                return Left.CompareTo(y);
            else
                return 1;
        }
 
        public override bool IsCommutative => false;
 
        public override IAbelianGroupElement Zero => NullValue.Instance;
    }
}