38 lines
559 B
Go
38 lines
559 B
Go
package proxy
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import "errors"
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type Human struct {
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Gender string
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Age int
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}
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type Bar interface {
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Welcome(Human) error
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}
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type OpenBar struct {
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Visitors []Human
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}
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func (b *OpenBar) Welcome(h Human) error {
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b.Visitors = append(b.Visitors, h)
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return nil
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}
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type BarProxy struct {
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Bar
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}
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func (b *BarProxy) Welcome(h Human) error {
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if h.Gender == "female" && h.Age < 20 {
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return errors.New("Females under 20 not allowed.")
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}
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if h.Gender == "male" && h.Age < 18 {
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return errors.New("Males under 18 not allowed.")
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}
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return b.Bar.Welcome(h)
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}
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