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package cmd
import (
"fmt"
)
type Filter struct {
name string
action func(string) string
subfilters []Filter
}
type Greeter interface {
Greet()
}
type Filterer interface {
Greeter
Filter(string) string
}
func (f Filter) Greet() {
subfilterCount := len(f.subfilters)
fmt.Printf("I am a filter and my name is %v\n", f.name)
if subfilterCount > 0 {
fmt.Println("My subfilters are:")
for _, subfilter := range f.subfilters {
fmt.Printf("- %v\n", subfilter.name)
}
}
}
func (f Filter) Filter(token string) (modifiedToken string) {
subfilterCount := len(f.subfilters)
modifiedToken = token
if subfilterCount > 0 {
for _, subfilter := range f.subfilters {
modifiedToken = subfilter.action(modifiedToken)
}
return modifiedToken
}
modifiedToken = f.action(token)
return modifiedToken
}
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