XmlScriptAttributeString.cs

using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using System.Xml;
using Waher.Script.Abstraction.Elements;
using Waher.Script.Model;
 
namespace Waher.Script.Xml.Model
{
    public class XmlScriptAttributeString : XmlScriptAttribute 
    {
        private readonly string value;
 
        public XmlScriptAttributeString(string Name, string Value, int Start, int Length, Expression Expression)
            : base(Name, Start, Length, Expression)
        {
            this.value = Value;
        }
 
        public override bool ForAllChildNodes(ScriptNodeEventHandler Callback, object State, SearchMethod Order)
        {
            return true;
        }
 
        internal override void Build(XmlDocument Document, XmlElement Parent, Variables Variables)
        {
            Parent.SetAttribute(this.Name, this.value);
        }
 
        internal override string GetValue(Variables Variables)
        {
            return this.value;
        }
 
        internal override Task<string> GetValueAsync(Variables Variables)
        {
            return Task.FromResult<string>(this.value);
        }
 
        public override PatternMatchResult PatternMatch(XmlNode CheckAgainst, Dictionary<string, IElement> AlreadyFound)
        {
            if (CheckAgainst is XmlAttribute)
                return CheckAgainst.Value == this.value ? PatternMatchResult.Match : PatternMatchResult.NoMatch;
            else
                return PatternMatchResult.NoMatch;
        }
 
        public override PatternMatchResult PatternMatch(string CheckAgainst, Dictionary<string, IElement> AlreadyFound)
        {
            return CheckAgainst == this.value ? PatternMatchResult.Match : PatternMatchResult.NoMatch;
        }
 
        public override bool IsApplicable(string CheckAgainst)
        {
            return CheckAgainst == this.value;
        }
    }
}