package tdb

import (
	"github.com/golang/protobuf/proto"
	bolt "go.etcd.io/bbolt"
)

var (
	ContinueIteration IterationSignal = true
	StopIteration     IterationSignal = false
)

type IterationSignal bool

type Iterable interface {
	Iterate(Iterator, ...*Tx) error
	IterateKeys(KeyIterator, ...*Tx) error
}

type rawIterable interface {
	iterateRaw(rawIterator, ...*Tx) error
}

type rawIterator func(dbPtrValue) (IterationSignal, error)
type Iterator func(proto.Message) (IterationSignal, error)
type KeyIterator func([]byte) (IterationSignal, error)
type keyIteratorWithBucket func([]byte, *bolt.Bucket) (IterationSignal, error)