package yqlib import ( "container/list" "strconv" yaml "gopkg.in/yaml.v3" ) func hasOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) { log.Debugf("-- hasOperation") var results = list.New() rhs, err := d.GetMatchingNodes(context.ReadOnlyClone(), expressionNode.Rhs) if err != nil { return Context{}, err } wantedKey := "null" wanted := &yaml.Node{Tag: "!!null"} if rhs.MatchingNodes.Len() != 0 { wanted = rhs.MatchingNodes.Front().Value.(*CandidateNode).Node wantedKey = wanted.Value } for el := context.MatchingNodes.Front(); el != nil; el = el.Next() { candidate := el.Value.(*CandidateNode) // grab the first value candidateNode := unwrapDoc(candidate.Node) var contents = candidateNode.Content switch candidateNode.Kind { case yaml.MappingNode: candidateHasKey := false for index := 0; index < len(contents) && !candidateHasKey; index = index + 2 { key := contents[index] if key.Value == wantedKey { candidateHasKey = true } } results.PushBack(createBooleanCandidate(candidate, candidateHasKey)) case yaml.SequenceNode: candidateHasKey := false if wanted.Tag == "!!int" { var number, errParsingInt = strconv.ParseInt(wantedKey, 10, 64) if errParsingInt != nil { return Context{}, errParsingInt } candidateHasKey = int64(len(contents)) > number } results.PushBack(createBooleanCandidate(candidate, candidateHasKey)) default: results.PushBack(createBooleanCandidate(candidate, false)) } } return context.ChildContext(results), nil }