Call.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;
using Waher.Script;
 
namespace TAG.Simulator.ObjectModel.Activities
{
    public class Call : ReferenceActivityNode 
    {
        private IActivity activity;
 
        public Call(ISimulationNode Parent, Model Model)
            : base(Parent, Model)
        {
        }
 
        public override string LocalName => nameof(Call);
 
        public override ISimulationNode Create(ISimulationNode Parent, Model Model)
        {
            return new Call(Parent, Model);
        }
 
        public override Task Start()
        {
            if (!this.Model.TryGetActivity(this.Reference, out this.activity))
                throw new Exception("Activity not found: " + this.Reference);
 
            return base.Start();
        }
 
        public override async Task<LinkedListNode<IActivityNode>> Execute(Variables Variables)
        {
            await this.activity.ExecuteTask(Variables);
            return null;
        }
 
        public override void ExportPlantUml(StreamWriter Output, int Indentation, char QuoteChar)
        {
            Indent(Output, Indentation);
            Output.Write('(');
            Output.Write(this.Reference);
            Output.WriteLine(')');
        }
    }
}