NotLike.cs

using System.Collections.Generic;
using Waher.Script.Abstraction.Elements;
using Waher.Script.Model;
using Waher.Script.Objects;
 
namespace Waher.Script.Operators.Comparisons
{
    public class NotLike : Like
    {
        public NotLike(ScriptNode Left, ScriptNode Right, int Start, int Length, Expression Expression)
            : base(Left, Right, Start, Length, Expression)
        {
        }
 
        public override IElement EvaluateScalar(IElement Left, IElement Right, Variables Variables)
        {
            IElement Result = base.EvaluateScalar(Left, Right, Variables);
            BooleanValue B = (BooleanValue)Result;
            if (B.Value)
                return BooleanValue.False;
            else
                return BooleanValue.True;
        }
 
        public override PatternMatchResult PatternMatch(IElement CheckAgainst, Dictionary<string, IElement> AlreadyFound)
        {
            switch (base.PatternMatch(CheckAgainst, AlreadyFound))
            {
                case PatternMatchResult.Match:
                    return PatternMatchResult.NoMatch;
 
                case PatternMatchResult.NoMatch: 
                    return PatternMatchResult.Match;
 
                case PatternMatchResult.Unknown: 
                default:
                    return PatternMatchResult.Unknown;
            }
        }
    }
}