mirror of https://github.com/mikefarah/yq.git
45 lines
1.0 KiB
Go
45 lines
1.0 KiB
Go
package yqlib
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func alternativeOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) {
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log.Debugf("-- alternative")
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prefs := crossFunctionPreferences{
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CalcWhenEmpty: true,
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Calculation: alternativeFunc,
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LhsResultValue: func(lhs *CandidateNode) (*CandidateNode, error) {
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if lhs == nil {
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return nil, nil
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}
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truthy, err := isTruthy(lhs)
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if err != nil {
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return nil, err
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}
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if truthy {
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return lhs, nil
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}
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return nil, nil
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},
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}
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return crossFunctionWithPrefs(d, context, expressionNode, prefs)
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}
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func alternativeFunc(d *dataTreeNavigator, context Context, lhs *CandidateNode, rhs *CandidateNode) (*CandidateNode, error) {
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if lhs == nil {
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return rhs, nil
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}
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if rhs == nil {
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return lhs, nil
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}
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lhs.Node = unwrapDoc(lhs.Node)
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rhs.Node = unwrapDoc(rhs.Node)
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log.Debugf("Alternative LHS: %v", lhs.Node.Tag)
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log.Debugf("- RHS: %v", rhs.Node.Tag)
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isTrue, err := isTruthy(lhs)
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if err != nil {
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return nil, err
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} else if isTrue {
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return lhs, nil
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}
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return rhs, nil
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}
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