ToSet.cs

using System;
using System.Collections.Generic;
using Waher.Script.Abstraction.Elements;
using Waher.Script.Abstraction.Sets;
using Waher.Script.Model;
 
namespace Waher.Script.Operators.Sets
{
    public class ToSet : NullCheckUnaryOperator
    {
        public ToSet(ScriptNode Operand, bool NullCheck, int Start, int Length, Expression Expression)
            : base(Operand, NullCheck, Start, Length, Expression)
        {
        }
 
        public override IElement Evaluate(IElement Operand, Variables Variables)
        {
            return this.ConvertToSet(Operand);
        }
 
        private IElement ConvertToSet(IElement Operand)
        {
            if (this.nullCheck && Operand.AssociatedObjectValue is null)
                return Operand;
 
            if (Operand is ISet)
                return Operand;
 
            if (Operand is IVector V)
                return SetDefinition.Encapsulate(V.VectorElements);
 
            if (this.nullCheck && Operand.AssociatedObjectValue is null)
                return Operand;
 
            return SetDefinition.Encapsulate(new IElement[] { Operand });
        }
 
        public override PatternMatchResult PatternMatch(IElement CheckAgainst, Dictionary<string, IElement> AlreadyFound)
        {
            return this.op.PatternMatch(this.ConvertToSet(CheckAgainst), AlreadyFound);
        }
    }
}