public override object BeforeMethod(string method)
{
// Raw Xpath
// {{ data.xpath['/name/first/@type'] }}
if (method == xpathQueryMethodName)
{
return(new XPathQuery(doc));
}
// A list of nodes
// {{ for person in data.list['//person'] }}
if (method == listQueryMethodName)
{
return(new ListQuery(doc));
}
// List shortcut
// {% for person in data.list-person %}
// Prepends "//", so it's the same as the prior example
if (StartsWithMethodName(method, listQueryMethodName))
{
return(ListQuery.GetDrops(doc, string.Concat(".//", GetShorthandValue(method))));
}
// Attribute shortcut
// {{ data.name.first.attr-type }}
// Same as the XPath example above
if (StartsWithMethodName(method, attributeMethodName))
{
return(doc.Attributes[GetShorthandValue(method)]?.Value);
}
// We have nothing for this node, return an empty string
if (doc.SelectSingleNode(GetPathToNode(method)) == null)
{
return(string.Empty);
}
// We have inner text for this node, then this is what they actually want, so return it
if (doc.SelectSingleNode(GetPathToTextNode(method)) != null)
{
return(doc.SelectSingleNode(GetPathToTextNode(method)).InnerText);
}
// If there's no text, then assume they want to drill down into the inner XML of it
return(new XmlNode((XmlElement)doc.SelectSingleNode(GetPathToNode(method))));
}