mirror of https://github.com/prometheus/prometheus
43 lines
959 B
Go
43 lines
959 B
Go
package kingpin
|
|
|
|
// Action callback executed at various stages after all values are populated.
|
|
// The application, commands, arguments and flags all have corresponding
|
|
// actions.
|
|
type Action func(*ParseContext) error
|
|
|
|
type actionMixin struct {
|
|
actions []Action
|
|
preActions []Action
|
|
}
|
|
|
|
type actionApplier interface {
|
|
applyActions(*ParseContext) error
|
|
applyPreActions(*ParseContext) error
|
|
}
|
|
|
|
func (a *actionMixin) addAction(action Action) {
|
|
a.actions = append(a.actions, action)
|
|
}
|
|
|
|
func (a *actionMixin) addPreAction(action Action) {
|
|
a.preActions = append(a.preActions, action)
|
|
}
|
|
|
|
func (a *actionMixin) applyActions(context *ParseContext) error {
|
|
for _, action := range a.actions {
|
|
if err := action(context); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (a *actionMixin) applyPreActions(context *ParseContext) error {
|
|
for _, preAction := range a.preActions {
|
|
if err := preAction(context); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|