swiftxml_sections.swift

...
public func parser(_ parser: XMLParser, didStartElement elementName: String, namespaceURI: String?, qualifiedName qName: String?, attributes attributeDict: [String : String] = [:])
{
	switch elementName
	{
		case AuthorsSection:
			let authorParser = AuthorParser()   // 1
			authorParser.delegate = self        // 2

			// el control pasa a sus manos
			self.parser.delegate = authorParser // 3
			// Para no perder la referencia
			self.actualParser = authorParser    // 4 

		case BuyLinksSection:
			let linksParser = LinksParser()
			linksParser.delegate = self

			// el control pasa a sus manos
			self.parser.delegate = linksParser
			// Para no perder la referencia
			self.actualParser = linksParser

		...
	}
}
...