ThingReference.cs

using System;
using Waher.Script;
using Waher.Script.Abstraction.Elements;
using Waher.Script.Model;
using Waher.Script.Objects;
 
namespace Waher.Things.ScriptExtensions
{
    public class ThingReference : FunctionMultiVariate
    {
        public ThingReference(int Start, int Length, Expression Expression)
            : base(Array.Empty<ScriptNode>(), argumentTypes0, Start, Length, Expression)
        {
        }
 
        public ThingReference(ScriptNode NodeId, int Start, int Length, Expression Expression)
            : base(new ScriptNode[] { NodeId }, argumentTypes1Scalar, Start, Length, Expression)
        {
        }
 
        public ThingReference(ScriptNode NodeId, ScriptNode SourceId, int Start, int Length, Expression Expression)
            : base(new ScriptNode[] { NodeId, SourceId }, argumentTypes2Scalar, Start, Length, Expression)
        {
        }
 
        public ThingReference(ScriptNode NodeId, ScriptNode SourceId, ScriptNode Partition, int Start, int Length, Expression Expression)
            : base(new ScriptNode[] { NodeId, SourceId, Partition }, argumentTypes3Scalar, Start, Length, Expression)
        {
        }
 
        public override string FunctionName => nameof(ThingReference);
 
        public override string[] DefaultArgumentNames => new string[] { "NodeId", "SourceId", "Partition" };
 
        public override IElement Evaluate(IElement[] Arguments, Variables Variables)
        {
            switch (Arguments.Length)
            {
                case 0:
                    return new ObjectValue(Things.ThingReference.Empty);
 
                case 1:
                    return new ObjectValue(new Things.ThingReference(ToString(Arguments[0]) ?? string.Empty));
 
                case 2:
                    return new ObjectValue(new Things.ThingReference(
                        ToString(Arguments[0]) ?? string.Empty,
                        ToString(Arguments[1]) ?? string.Empty));
 
                case 3:
                default:
                    return new ObjectValue(new Things.ThingReference(
                        ToString(Arguments[0]) ?? string.Empty,
                        ToString(Arguments[1]) ?? string.Empty,
                        ToString(Arguments[2]) ?? string.Empty));
 
            }
        }
    }
}