Method parse

parse.go:167–388

()

}

func (p *parser) parse() (*Node, error) {
	p.once.Do(func() {
		p.space2prefix = map[string]*xmlnsPrefix{"http://www.w3.org/XML/1998/namespace": {name: "xml", level: 0}}
	})

	var streamElementNodeCounter int
	for {
		p.reader.StartCaching()
		tok, err := p.decoder.Token()
		p.reader.StopCaching()

		// Update line number based on processed content
		p.updateLineNumber()

		if err != nil {
			return nil, err
		}

		switch tok := tok.(type) {
		case xml.StartElement:
			if p.level == 0 {
				// mising XML declaration
				attributes := make([]Attr, 1)
				attributes[0].Name = xml.Name{Local: "version"}
				attributes[0].Value = "1.0"
				node := &Node{
					Type:       DeclarationNode,
					Data:       "xml",
					Attr:       attributes,
					level:      1,
					LineNumber: p.currentLine,
				}
				AddChild(p.prev, node)
				p.level = 1
				p.prev = node
			}

			for _, att := range tok.Attr {
				if att.Name.Local == "xmlns" {
					// https://github.com/antchfx/xmlquery/issues/67
					if prefix, ok := p.space2prefix[att.Value]; !ok || (ok && prefix.level >= p.level) {
						p.space2prefix[att.Value] = &xmlnsPrefix{name: "", level: p.level} // reset empty if exist the default namespace
					}
				} else if att.Name.Space == "xmlns" {
					// maybe there are have duplicate NamespaceURL?
					p.space2prefix[att.Value] = &xmlnsPrefix{name: att.Name.Local, level: p.level}
				}
			}

			if space := tok.Name.Space; space != "" {
				if _, found := p.space2prefix[space]; !found && p.decoder.Strict {
					return nil, fmt.Errorf("xmlquery: invalid XML document, namespace %s is missing", space)
				}
			}

			attributes := make([]Attr, len(tok.Attr))
			for i, att := range tok.Attr {
				name := att.Name