BNode.cs

using System;
using System.Threading.Tasks;
using Waher.Content.Semantic.Model;
using Waher.Script;
using Waher.Script.Abstraction.Elements;
using Waher.Script.Model;
 
namespace Waher.Content.Semantic.Functions
{
    public class BNode : FunctionMultiVariate
    {
        public BNode(int Start, int Length, Expression Expression)
            : base(new ScriptNode[0], argumentTypes0, Start, Length, Expression)
        {
        }
 
        public BNode(ScriptNode Argument, int Start, int Length, Expression Expression)
            : base(new ScriptNode[] { Argument }, argumentTypes1Scalar, Start, Length, Expression)
        {
        }
 
        public override string FunctionName => nameof(BNode);
 
        public override string[] DefaultArgumentNames => new string[] { "Label" };
 
        public override IElement Evaluate(IElement[] Arguments, Variables Variables)
        {
            if (Arguments.Length == 0)
                return new BlankNode(Guid.NewGuid().ToString());
 
            string Label = Arguments[0].AssociatedObjectValue?.ToString() ?? string.Empty;
 
            return new BlankNode(Label);
        }
 
        public override Task<IElement> EvaluateAsync(IElement[] Arguments, Variables Variables)
        {
            return Task.FromResult(this.Evaluate(Arguments, Variables));
        }
    }
}