iterator.gno

 1package datasource
 2
 3// NewRecordIterator returns an iterator for a list of records.
 4// The iterator never returns an error and it doesn't modify the slice.
 5func NewRecordIterator(records []Record) Iterator {
 6	return &recordIterator{records: records}
 7}
 8
 9type recordIterator struct {
10	records []Record
11	current Record
12}
13
14func (it *recordIterator) Err() error     { return nil }
15func (it *recordIterator) Record() Record { return it.current }
16
17func (it *recordIterator) Next() bool {
18	if len(it.records) == 0 {
19		return false
20	}
21
22	it.current, it.records = it.records[0], it.records[1:]
23	return true
24}