yq/pkg/yqlib/treeops/operator_equals.go

54 lines
1.5 KiB
Go

package treeops
import (
"github.com/elliotchance/orderedmap"
)
func EqualsOperator(d *dataTreeNavigator, matchMap *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
log.Debugf("-- equalsOperation")
var results = orderedmap.NewOrderedMap()
for el := matchMap.Front(); el != nil; el = el.Next() {
candidate := el.Value.(*CandidateNode)
log.Debug("equalsOperation checking %v", candidate)
matches, errInChild := hasMatch(d, candidate, pathNode.Lhs, pathNode.Rhs)
if errInChild != nil {
return nil, errInChild
}
equalsCandidate := createBooleanCandidate(candidate, matches)
results.Set(equalsCandidate.GetKey(), equalsCandidate)
}
return results, nil
}
func hasMatch(d *dataTreeNavigator, candidate *CandidateNode, lhs *PathTreeNode, rhs *PathTreeNode) (bool, error) {
childMap := orderedmap.NewOrderedMap()
childMap.Set(candidate.GetKey(), candidate)
childMatches, errChild := d.getMatchingNodes(childMap, lhs)
log.Debug("got the LHS")
if errChild != nil {
return false, errChild
}
// TODO = handle other RHS types
return containsMatchingValue(childMatches, rhs.PathElement.StringValue), nil
}
func containsMatchingValue(matchMap *orderedmap.OrderedMap, valuePattern string) bool {
log.Debugf("-- findMatchingValues")
for el := matchMap.Front(); el != nil; el = el.Next() {
node := el.Value.(*CandidateNode)
log.Debugf("-- comparing %v to %v", node.Node.Value, valuePattern)
if Match(node.Node.Value, valuePattern) {
return true
}
}
log.Debugf("-- done findMatchingValues")
return false
}