mirror of https://github.com/mikefarah/yq.git
39 lines
891 B
Go
39 lines
891 B
Go
package yqlib
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import (
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"container/list"
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)
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func selectOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) {
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log.Debugf("-- selectOperation")
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var results = list.New()
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for el := context.MatchingNodes.Front(); el != nil; el = el.Next() {
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candidate := el.Value.(*CandidateNode)
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childContext := context.SingleChildContext(candidate)
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childContext.DontAutoCreate = true
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rhs, err := d.GetMatchingNodes(childContext, 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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result := first.Value.(*CandidateNode)
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includeResult, errDecoding := isTruthy(result)
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if errDecoding != nil {
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return Context{}, errDecoding
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}
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if includeResult {
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results.PushBack(candidate)
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}
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}
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}
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return context.ChildContext(results), nil
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}
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