sing-box/experimental/libbox/iterator.go
2023-04-19 21:42:40 +08:00

48 lines
813 B
Go

package libbox
import "github.com/sagernet/sing/common"
type StringIterator interface {
Next() string
HasNext() bool
}
var _ StringIterator = (*iterator[string])(nil)
type iterator[T any] struct {
values []T
}
func newIterator[T any](values []T) *iterator[T] {
return &iterator[T]{values}
}
func (i *iterator[T]) Next() T {
if len(i.values) == 0 {
return common.DefaultValue[T]()
}
nextValue := i.values[0]
i.values = i.values[1:]
return nextValue
}
func (i *iterator[T]) HasNext() bool {
return len(i.values) > 0
}
type abstractIterator[T any] interface {
Next() T
HasNext() bool
}
func iteratorToArray[T any](iterator abstractIterator[T]) []T {
if iterator == nil {
return nil
}
var values []T
for iterator.HasNext() {
values = append(values, iterator.Next())
}
return values
}