ReferenceReplacer.cs

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using System.Xml.Xsl.Qil;
 
namespace System.Xml.Xsl.Xslt;
 
internal sealed class ReferenceReplacer : QilReplaceVisitor
{
    private QilReference _lookFor;
 
    private QilReference _replaceBy;
 
    public ReferenceReplacer(QilFactory f)
        : base(f)
    {
    }
 
    public QilNode Replace(QilNode expr, QilReference lookFor, QilReference replaceBy)
    {
        QilDepthChecker.Check(expr);
        _lookFor = lookFor;
        _replaceBy = replaceBy;
        return VisitAssumeReference(expr);
    }
 
    protected override QilNode VisitReference(QilNode n)
    {
        if (n != _lookFor)
        {
            return n;
        }
        return _replaceBy;
    }
}