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package kingpin
// HintAction is a function type who is expected to return a slice of possible
// command line arguments.
type HintAction func() []string
type completionsMixin struct {
hintActions []HintAction
builtinHintActions []HintAction
}
func (a *completionsMixin) addHintAction(action HintAction) {
a.hintActions = append(a.hintActions, action)
}
// Allow adding of HintActions which are added internally, ie, EnumVar
func (a *completionsMixin) addHintActionBuiltin(action HintAction) {
a.builtinHintActions = append(a.builtinHintActions, action)
}
func (a *completionsMixin) resolveCompletions() []string {
var hints []string
options := a.builtinHintActions
if len(a.hintActions) > 0 {
// User specified their own hintActions. Use those instead.
options = a.hintActions
}
for _, hintAction := range options {
hints = append(hints, hintAction()...)
}
return hints
}
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