mirror of https://github.com/mikefarah/yq.git
68 lines
1.9 KiB
Go
68 lines
1.9 KiB
Go
package yqlib
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func assignUpdateFunc(d *dataTreeNavigator, context Context, lhs *CandidateNode, rhs *CandidateNode) (*CandidateNode, error) {
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rhs.Node = unwrapDoc(rhs.Node)
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lhs.UpdateFrom(rhs)
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return lhs, nil
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}
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func assignUpdateOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) {
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lhs, err := d.GetMatchingNodes(context, expressionNode.Lhs)
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if err != nil {
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return Context{}, err
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}
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if !expressionNode.Operation.UpdateAssign {
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// this works because we already ran against LHS with an editable context.
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_, err := crossFunction(d, context.ReadOnlyClone(), expressionNode, assignUpdateFunc, false)
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return context, err
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}
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for el := lhs.MatchingNodes.Front(); el != nil; el = el.Next() {
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candidate := el.Value.(*CandidateNode)
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rhs, err := d.GetMatchingNodes(context.SingleChildContext(candidate), expressionNode.Rhs)
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if err != nil {
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return Context{}, err
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}
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// grab the first value
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first := rhs.MatchingNodes.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 context, nil
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}
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// does not update content or values
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func assignAttributesOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) {
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log.Debug("getting lhs matching nodes for update")
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lhs, err := d.GetMatchingNodes(context, expressionNode.Lhs)
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if err != nil {
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return Context{}, err
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}
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for el := lhs.MatchingNodes.Front(); el != nil; el = el.Next() {
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candidate := el.Value.(*CandidateNode)
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rhs, err := d.GetMatchingNodes(context.SingleReadonlyChildContext(candidate), expressionNode.Rhs)
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if err != nil {
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return Context{}, err
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}
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// grab the first value
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first := rhs.MatchingNodes.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 context, nil
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}
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