Break.cs

using System.Threading.Tasks;
using Waher.Script.Abstraction.Elements;
using Waher.Script.Exceptions;
using Waher.Script.Model;
using Waher.Script.Objects;
 
namespace Waher.Script.Functions.Runtime
{
    public class Break : FunctionOneVariable
    {
        private readonly bool hasValue;
 
        public Break(int Start, int Length, Expression Expression)
            : base(new ConstantElement(ObjectValue.Null, Start, Length, Expression),
                  Start, Length, Expression)
        {
            this.hasValue = false;
        }
 
        public Break(ScriptNode Argument, int Start, int Length, Expression Expression)
            : base(Argument, Start, Length, Expression)
        {
            this.hasValue = true;
        }
 
        public override string FunctionName => nameof(Break);
 
        public override IElement Evaluate(Variables Variables)
        {
            if (this.hasValue)
                return base.Evaluate(Variables);
            else
            {
                //ScriptBreakLoopException.TryThrowReused();
                throw new ScriptBreakLoopException();
            }
        }
 
        public override Task<IElement> EvaluateAsync(Variables Variables)
        {
            if (this.hasValue)
                return base.EvaluateAsync(Variables);
            else
            {
                //ScriptBreakLoopException.TryThrowReused();
                throw new ScriptBreakLoopException();
            }
        }
 
        public override IElement Evaluate(IElement Argument, Variables Variables)
        {
            //ScriptBreakLoopException.TryThrowReused(Argument);
            throw new ScriptBreakLoopException(Argument);
        }
    }
}