// Next advances the iterator to the subsequent event, returning whether there
// are any more events found. In case of a retrieval or parsing error, false is
// returned and Error() can be queried for the exact failure.
547764
func (it *ENSRegistryNewTTLIterator) Next() bool {
	// If the iterator failed, stop iterating
	if it.fail != nil {
		return false
	}
	// If the iterator completed, deliver directly whatever's available
	if it.done {
		select {
		case log := <-it.logs:
			it.Event = new(ENSRegistryNewTTL)
			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
				it.fail = err
				return false
			}
			it.Event.Raw = log
			return true

		default:
			return false
		}
	}
	// Iterator still in progress, wait for either a data or an error event
	select {
	case log := <-it.logs:
		it.Event = new(ENSRegistryNewTTL)
		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
			it.fail = err
			return false
		}
		it.Event.Raw = log
		return true

	case err := <-it.sub.Err():
		it.done = true
		it.fail = err
		return it.Next()
	}
}
758732
func (iter *ProductIterator) Next() []interface{} {
	if !iter.HasNext() {
		return nil
	}

	if iter.res[0] == nil {
		for i := range iter.res {
			iter.res[i] = iter.pools[i][0]
		}
	} else {
		for i := iter.n - 1; i >= 0; i-- {
			pool := iter.pools[i]
			iter.indices[i] += 1
			if iter.indices[i] == len(pool) {
				iter.indices[i] = 0
				iter.res[i] = pool[0]
			} else {
				iter.res[i] = pool[iter.indices[i]]
				break
			}
		}
	}

	iter.iters += 1

	return iter.res
}
1048894
func (ics *IterateCloserStruct) Next(key, val SophieReader) error {
	if ics.NextF != nil {
		return ics.NextF(key, val)
	}
	return io.EOF
}
575634
func (iter *ExprIter) Next() (found bool) {
	defer func() {
		iter.matched = found
	}()

	// Iterate child firstly.
	for i := len(iter.Children) - 1; i >= 0; i-- {
		if !iter.Children[i].Next() {
			continue
		}

		for j := i + 1; j < len(iter.Children); j++ {
			iter.Children[j].Reset()
		}
		return true
	}

	// It's root node.
	if iter.Group == nil {
		return false
	}

	// Otherwise, iterate itself to find more matched equivalent expressions.
	for elem := iter.Element.Next(); elem != nil; elem = elem.Next() {
		expr := elem.Value.(*GroupExpr)
		exprOperand := GetOperand(expr.ExprNode)

		if !iter.Operand.Match(exprOperand) {
			// All the Equivalents which have the same Operand are continuously
			// stored in the list. Once the current equivalent can not Match
			// the Operand, the rest can not, either.
			return false
		}

		if len(iter.Children) != len(expr.Children) {
			continue
		}

		allMatched := true
		for i := range iter.Children {
			iter.Children[i].Group = expr.Children[i]
			if !iter.Children[i].Reset() {
				allMatched = false
				break
			}
		}

		if allMatched {
			iter.Element = elem
			return true
		}
	}
	return false
}
73474
func (it *stackIterator) Next() bool {
	if it.err != nil || it.atend {
		return false
	}
	callFrameRegs, ret, retaddr := it.advanceRegs()
	it.frame = it.newStackframe(ret, retaddr)

	if it.stkbar != nil && it.frame.Ret == it.stackBarrierPC && it.frame.addrret == it.stkbar[0].ptr {
		// Skip stack barrier frames
		it.frame.Ret = it.stkbar[0].val
		it.stkbar = it.stkbar[1:]
	}

	if it.switchStack() {
		return true
	}

	if it.frame.Ret <= 0 {
		it.atend = true
		return true
	}

	it.top = false
	it.pc = it.frame.Ret
	it.regs = callFrameRegs
	return true
}
32717
func (s *Scanner) Next() error {
	bo := NewBackoffer(context.WithValue(context.Background(), txnStartKey, s.snapshot.version.Ver), scannerNextMaxBackoff)
	if !s.valid {
		return errors.New("scanner iterator is invalid")
	}
	for {
		s.idx++
		if s.idx >= len(s.cache) {
			if s.eof {
				s.Close()
				return nil
			}
			err := s.getData(bo)
			if err != nil {
				s.Close()
				return errors.Trace(err)
			}
			if s.idx >= len(s.cache) {
				continue
			}
		}

		current := s.cache[s.idx]
		if len(s.endKey) > 0 && kv.Key(current.Key).Cmp(kv.Key(s.endKey)) >= 0 {
			s.eof = true
			s.Close()
			return nil
		}
		// Try to resolve the lock
		if current.GetError() != nil {
			// 'current' would be modified if the lock being resolved
			if err := s.resolveCurrentLock(bo, current); err != nil {
				s.Close()
				return errors.Trace(err)
			}

			// The check here does not violate the KeyOnly semantic, because current's value
			// is filled by resolveCurrentLock which fetches the value by snapshot.get, so an empty
			// value stands for NotExist
			if len(current.Value) == 0 {
				continue
			}
		}
		return nil
	}
}
643260
func (iter *s3DeleteVersionListIterator) Next() bool {
	if len(iter.objects) > 0 {
		iter.objects = iter.objects[1:]
	}

	if len(iter.objects) == 0 && iter.Paginator.Next() {
		output := iter.Paginator.Page().(*s3.ListObjectVersionsOutput)
		iter.objects = output.Versions

		for _, entry := range output.DeleteMarkers {
			iter.objects = append(iter.objects, &s3.ObjectVersion{
				Key:       entry.Key,
				VersionId: entry.VersionId,
			})
		}
	}

	return len(iter.objects) > 0
}
1286553
func (e *element) Next() *element {
	if p := e.next; e.list != nil && p != &e.list.root {
		return p
	}
	return nil
}
142068
func (rows *Rows) Next() bool {
	if rows.lastError == nil && rows.rows != nil {
		hasNext := rows.rows.Next()
		if !hasNext {
			rows.lastError = sql.ErrNoRows
		}
		return hasNext
	}
	return false
}
1246475
func (f *FilterIterator) Next() interface{} {
	for {
		if value := f.iter.Next(); value == nil || !f.filter(value) {
			return value
		}
	}
}
120265
func (rItr *reverseIterator) Next() {
	var err error
	rItr.cur, err = rItr.dric.Recv()
	if err != nil {
		panic(fmt.Sprintf("RemoteDB.ReverseIterator.Next error: %v", err))
	}
}
237498
func (node *Node) Next() error {
	node.current = node.current.next
	if node.current == nil {
		return StopIteration
	}
	return nil
}
641136
func (pr *PagingResult) Next() (noMore bool, err error) {
	if !pr.HasNext() {
		noMore = true
		return
	}

	return pr.navigate(&pr.next)
}
257087
func (e *StringDecoder) Next() bool {
	if e.err != nil {
		return false
	}

	e.i += e.l
	return e.i < len(e.b)
}
565140
func (itr *Iterator) Next() (v uint64, eof bool) {
	if itr.c == nil {
		return 0, true
	}
	// Iterate over containers until we find the next value or EOF.
	for {
		if itr.c.isArray() {
			if itr.j >= itr.c.n-1 {
				// Reached end of array, move to the next container.
				if !itr.citer.Next() {
					itr.c = nil
					return 0, true
				}
				itr.key, itr.c = itr.citer.Value()
				itr.j = -1
				continue
			}
			itr.j++
			return itr.peek(), false
		}

		if itr.c.isRun() {
			// Because itr.j for an array container defaults to -1
			// but defaults to 0 for a run container, we need to
			// standardize on treating -1 as our default value for itr.j.
			// Note that this is easier than changing the default to 0
			// because the array logic uses the negative number space
			// to represent offsets to an array position that isn't filled
			// (-1 being the first empty space in an array, or 0).
			if itr.j == -1 {
				itr.j++
			}

			// If the container is empty, move to the next container.
			if len(itr.c.runs()) == 0 {
				if !itr.citer.Next() {
					itr.c = nil
					return 0, true
				}
				itr.key, itr.c = itr.citer.Value()
				itr.j = -1
				continue
			}

			r := itr.c.runs()[itr.j]
			runLength := int32(r.last - r.start)

			if itr.k >= runLength {
				// Reached end of run, move to the next run.
				itr.j, itr.k = itr.j+1, -1
			}

			if itr.j >= int32(len(itr.c.runs())) {
				// Reached end of runs, move to the next container.
				if !itr.citer.Next() {
					itr.c = nil
					return 0, true
				}
				itr.key, itr.c = itr.citer.Value()
				itr.j = -1
				continue
			}

			itr.k++
			return itr.peek(), false
		}

		// Move to the next possible index in the bitmap container.
		itr.j++

		// Find first non-zero bit in current bitmap, if possible.
		hb := itr.j >> 6

		if hb >= int32(len(itr.c.bitmap())) {
			if !itr.citer.Next() {
				itr.c = nil
				return 0, true
			}
			itr.key, itr.c = itr.citer.Value()
			itr.j = -1
			continue
		}
		lb := itr.c.bitmap()[hb] >> (uint(itr.j) % 64)
		if lb != 0 {
			itr.j = itr.j + int32(trailingZeroN(lb))
			return itr.peek(), false
		}

		// Otherwise iterate through remaining bitmaps to find next bit.
		for hb++; hb < int32(len(itr.c.bitmap())); hb++ {
			if itr.c.bitmap()[hb] != 0 {
				itr.j = hb<<6 + int32(trailingZeroN(itr.c.bitmap()[hb]))
				return itr.peek(), false
			}
		}

		// If no bits found then move to the next container.
		if !itr.citer.Next() {
			itr.c = nil
			return 0, true
		}
		itr.key, itr.c = itr.citer.Value()
		itr.j = -1
	}
}
1369954
func (d *OneToOneEnvelope) Next() *events.Envelope {
	data := d.d.Next()
	return (*events.Envelope)(data)
}
856683
func (l *lexer) next() (rune, bool) {
	if l.eof() {
		return 0, true
	}
	r, size := utf8.DecodeRuneInString(l.input[l.pos:])
	// TODO(zaccone): check for operation success/failure
	l.prev = l.pos
	l.pos += size
	return r, false
}