XmlScriptText.cs

using System.Collections.Generic;
using System.Xml;
using Waher.Script.Abstraction.Elements;
using Waher.Script.Model;
 
namespace Waher.Script.Xml.Model
{
    public class XmlScriptText : XmlScriptLeafNode
    {
        private readonly string text;
        private readonly bool isWhitespace;
 
        public XmlScriptText(string Text, int Start, int Length, Expression Expression)
            : base(Start, Length, Expression)
        {
            this.text = Text;
            this.isWhitespace = string.IsNullOrWhiteSpace(Text);
        }
 
        public string Text => this.text;
 
        public override bool IsWhitespace => this.isWhitespace;
 
        internal override void Build(XmlDocument Document, XmlElement Parent, Variables Variables)
        {
            Parent.AppendChild(Document.CreateTextNode(this.text));
        }
 
        public override PatternMatchResult PatternMatch(XmlNode CheckAgainst, Dictionary<string, IElement> AlreadyFound)
        {
            if (CheckAgainst is XmlText ||
                CheckAgainst is XmlCDataSection ||
                CheckAgainst is XmlWhitespace ||
                CheckAgainst is XmlSignificantWhitespace)
            {
                return CheckAgainst.InnerText.Trim() == this.text.Trim() ? PatternMatchResult.Match : PatternMatchResult.NoMatch;
            }
            else if (CheckAgainst is null)
                return string.IsNullOrWhiteSpace(this.text) ? PatternMatchResult.Match : PatternMatchResult.NoMatch;
            else
                return PatternMatchResult.NoMatch;
        }
 
        public override bool IsApplicable(XmlNode CheckAgainst, XmlElement First)
        {
            return CheckAgainst is XmlText ||
                CheckAgainst is XmlCDataSection ||
                CheckAgainst is XmlWhitespace ||
                CheckAgainst is XmlSignificantWhitespace;
        }
 
    }
}