Fixed create yaml

pkg/yqlib/stream_evaluator.go

@@ -11,6 +11,7 @@ import (
 type StreamEvaluator interface {
 	Evaluate(filename string, reader io.Reader, node *PathTreeNode, printer Printer) error
 	EvaluateFiles(expression string, filenames []string, printer Printer) error
+	EvaluateNew(expression string, printer Printer) error
 }
 
 type streamEvaluator struct {
@@ -23,6 +24,27 @@ func NewStreamEvaluator() StreamEvaluator {
 	return &streamEvaluator{treeNavigator: NewDataTreeNavigator(), treeCreator: NewPathTreeCreator()}
 }
 
+func (s *streamEvaluator) EvaluateNew(expression string, printer Printer) error {
+	node, err := treeCreator.ParsePath(expression)
+	if err != nil {
+		return err
+	}
+	candidateNode := &CandidateNode{
+		Document:  0,
+		Filename:  "",
+		Node:      &yaml.Node{Tag: "!!null"},
+		FileIndex: 0,
+	}
+	inputList := list.New()
+	inputList.PushBack(candidateNode)
+
+	matches, errorParsing := treeNavigator.GetMatchingNodes(inputList, node)
+	if errorParsing != nil {
+		return errorParsing
+	}
+	return printer.PrintResults(matches)
+}
+
 func (s *streamEvaluator) EvaluateFiles(expression string, filenames []string, printer Printer) error {
 
 	node, err := treeCreator.ParsePath(expression)