NotIn.cs

using System;
using Waher.Script.Abstraction.Elements;
using Waher.Script.Abstraction.Sets;
using Waher.Script.Model;
using Waher.Script.Objects;
 
namespace Waher.Script.Operators.Membership
{
    public class NotIn : In
    {
        public NotIn(ScriptNode Left, ScriptNode Right, int Start, int Length, Expression Expression)
            : base(Left, Right, Start, Length, Expression)
        {
        }
 
        public override IElement Evaluate(IElement Left, ISet Right)
        {
            if (Right.Contains(Left))
                return BooleanValue.False;
            else
                return BooleanValue.True;
        }
 
        public override IElement Evaluate(IElement Left, IVector Right)
        {
            foreach (IElement Element in Right.ChildElements)
            {
                if (Left.Equals(Element))
                    return BooleanValue.False;
            }
 
            return BooleanValue.True;
        }
    }
}