37 lines
690 B
Go
37 lines
690 B
Go
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package ut
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// Deopter describes an action that can be opted-out. This can be used in combination with defer to clean up
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type Deopter interface {
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Add(...DeoptFunc)
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Deopt()
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Invoke() error
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}
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// DeoptFunc describes the action signature for the Deopter.
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type DeoptFunc func() error
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// NewDeopter creates a deopter for the functions supplied.
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func NewDeopter(fn ...DeoptFunc) Deopter {
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return &deopter{fn}
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}
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type deopter struct {
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fn []DeoptFunc
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}
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func (d *deopter) Add(fn ...DeoptFunc) {
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d.fn = append(d.fn, fn...)
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}
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func (d *deopter) Deopt() {
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d.fn = nil
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}
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func (d *deopter) Invoke() error {
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var err error
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for _, fn := range d.fn {
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err = ErrCombine(err, fn())
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}
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return err
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}
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