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enrchan.go
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enrchan.go
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package go2linq
// enrChan is an [Enumerator] implementation based on a [channel].
//
// [channel]: https://go.dev/ref/spec#Channel_types
type enrChan[T any] struct {
chn <-chan T
crrnt T
}
// newEnrChan creates a new [enrChan] based on the provided channel.
func newEnrChan[T any](ch <-chan T) *enrChan[T] {
return &enrChan[T]{chn: ch}
}
// enrChan_moveNext is used for testing
func enrChan_moveNext[T any](enr *enrChan[T]) bool {
if enr.chn == nil {
return false
}
var open bool
enr.crrnt, open = <-enr.chn
return open
}
// MoveNext implements the [Enumerator.MoveNext] method.
func (enr *enrChan[T]) MoveNext() bool {
return enrChan_moveNext(enr)
}
// enrChan_current is used for testing
func enrChan_current[T any](enr *enrChan[T]) T {
return enr.crrnt
}
// Current implements the [Enumerator.Current] method.
func (enr *enrChan[T]) Current() T {
return enrChan_current(enr)
}
// Reset implements the [Enumerator.Reset] method.
// The method panics with [ErrResetNotSupported].
func (*enrChan[T]) Reset() {
panic(ErrResetNotSupported)
}