UInt64Literal.cs

using System;
using Waher.Content.Semantic.Ontologies;
using Waher.Runtime.Inventory;
 
namespace Waher.Content.Semantic.Model.Literals
{
    public class UInt64Literal : SemanticNumericLiteral
    {
        public UInt64Literal()
            : base()
        {
        }
 
        public UInt64Literal(ulong Value)
            : base(Value, Value.ToString())
        {
        }
 
        public UInt64Literal(ulong Value, string StringValue)
            : base(Value, StringValue)
        {
        }
 
        public static readonly string TypeUri = XmlSchema.unsignedLong.OriginalString;
 
        public override string StringType => TypeUri;
 
        public override Grade Supports(Type ValueType)
        {
            return ValueType == typeof(ulong) ? Grade.Ok : Grade.NotAtAll;
        }
 
        public override ISemanticLiteral Encapsulate(object Value)
        {
            if (Value is ulong Typed)
                return new UInt64Literal(Typed);
            else
                return new StringLiteral(Value?.ToString() ?? string.Empty);
        }
 
        public override double ComparableValue => (ulong)this.Value;
 
        public override ISemanticLiteral Parse(string Value, string DataType, string Language)
        {
            if (ulong.TryParse(Value, out ulong i))
                return new UInt64Literal(i, Value);
            else
                return new CustomLiteral(Value, DataType, Language);
        }
 
        public override bool Equals(object obj)
        {
            return obj is UInt64Literal Typed &&
                Typed.StringValue == this.StringValue;
        }
 
        public override int GetHashCode()
        {
            return this.StringValue.GetHashCode();
        }
    }
}