StringToDouble.cs

using System;
using Waher.Script.Abstraction.Elements;
using Waher.Script.Objects;
 
namespace Waher.Script.TypeConversion.FromString
{
    public class StringToDouble : ITypeConverter
    {
        public Type From => typeof(string);
 
        public Type To => typeof(double);
 
        public double Weight => 0.9;
 
        public bool TryConvert(object Value, out object Result)
        {
            if (Value is string s && Expression.TryParse(s, out double d))
            {
                Result = d;
                return true;
            }
            else
            {
                Result = null;
                return false;
            }
        }
 
        public bool TryConvertToElement(object Value, out IElement Result)
        {
            if (Value is string s && Expression.TryParse(s, out double d))
            {
                Result = new DoubleNumber(d);
                return true;
            }
            else
            {
                Result = null;
                return false;
            }
        }
    }
}