Method QueryMulti

tree.go:428–465

QueryMulti executes a tree-sitter query on a specific Node. Nodes captured by the query are grouped into a QueryResult and passed to the provided callback function. See https://tree-sitter.github.io/tree-sitter/using-parsers#pattern-matching-with-queries for query syntax documentation.

(query string, fn func(QueryResult))

// See https://tree-sitter.github.io/tree-sitter/using-parsers#pattern-matching-with-queries
// for query syntax documentation.
func (n *Node) QueryMulti(query string, fn func(QueryResult)) {
	if !n.IsValid() {
		return
	}
	q, err := sitter.NewQuery(
		[]byte(query),
		javascript.GetLanguage(),
	)
	if err != nil {
		return
	}

	qc := sitter.NewQueryCursor()
	defer qc.Close()

	qc.Exec(q, n.node)

	for {
		match, exists := qc.NextMatch()
		if !exists || match == nil {
			break
		}

		match = qc.FilterPredicates(match, n.source)

		qr := NewQueryResult()

		for _, capture := range match.Captures {
			node := NewNode(capture.Node, n.source)
			node.captureName = q.CaptureNameForId(capture.Index)
			qr.Add(node)
		}
		if len(qr) == 0 {
			continue
		}
		fn(qr)
	}
}

// IsStringy returns true if a Node is a string
// or is an expression starting with a string