mirror of https://github.com/mikefarah/yq.git
63 lines
1.5 KiB
Go
63 lines
1.5 KiB
Go
package yqlib
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import "container/list"
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func assignUpdateOperator(d *dataTreeNavigator, matchingNodes *list.List, expressionNode *ExpressionNode) (*list.List, error) {
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lhs, err := d.GetMatchingNodes(matchingNodes, expressionNode.Lhs)
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if err != nil {
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return nil, err
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}
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var rhs *list.List
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if !expressionNode.Operation.UpdateAssign {
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rhs, err = d.GetMatchingNodes(matchingNodes, expressionNode.Rhs)
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}
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for el := lhs.Front(); el != nil; el = el.Next() {
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candidate := el.Value.(*CandidateNode)
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if expressionNode.Operation.UpdateAssign {
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rhs, err = d.GetMatchingNodes(nodeToMap(candidate), expressionNode.Rhs)
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}
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if err != nil {
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return nil, err
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}
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// grab the first value
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first := rhs.Front()
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if first != nil {
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rhsCandidate := first.Value.(*CandidateNode)
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rhsCandidate.Node = unwrapDoc(rhsCandidate.Node)
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candidate.UpdateFrom(rhsCandidate)
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}
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}
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return matchingNodes, nil
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}
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// does not update content or values
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func assignAttributesOperator(d *dataTreeNavigator, matchingNodes *list.List, expressionNode *ExpressionNode) (*list.List, error) {
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lhs, err := d.GetMatchingNodes(matchingNodes, expressionNode.Lhs)
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if err != nil {
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return nil, err
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}
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for el := lhs.Front(); el != nil; el = el.Next() {
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candidate := el.Value.(*CandidateNode)
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rhs, err := d.GetMatchingNodes(nodeToMap(candidate), expressionNode.Rhs)
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if err != nil {
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return nil, err
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}
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// grab the first value
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first := rhs.Front()
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if first != nil {
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candidate.UpdateAttributesFrom(first.Value.(*CandidateNode))
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}
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}
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return matchingNodes, nil
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}
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