func()

in prompb/io/prometheus/client/metrics.pb.go [3330:3461]

• 131 lines of code
• 37 McCabe index (conditional complexity)

func (m *Exemplar) Unmarshal(dAtA []byte) error {
	l := len(dAtA)
	iNdEx := 0
	for iNdEx < l {
		preIndex := iNdEx
		var wire uint64
		for shift := uint(0); ; shift += 7 {
			if shift >= 64 {
				return ErrIntOverflowMetrics
			}
			if iNdEx >= l {
				return io.ErrUnexpectedEOF
			}
			b := dAtA[iNdEx]
			iNdEx++
			wire |= uint64(b&0x7F) << shift
			if b < 0x80 {
				break
			}
		}
		fieldNum := int32(wire >> 3)
		wireType := int(wire & 0x7)
		if wireType == 4 {
			return fmt.Errorf("proto: Exemplar: wiretype end group for non-group")
		}
		if fieldNum <= 0 {
			return fmt.Errorf("proto: Exemplar: illegal tag %d (wire type %d)", fieldNum, wire)
		}
		switch fieldNum {
		case 1:
			if wireType != 2 {
				return fmt.Errorf("proto: wrong wireType = %d for field Label", wireType)
			}
			var msglen int
			for shift := uint(0); ; shift += 7 {
				if shift >= 64 {
					return ErrIntOverflowMetrics
				}
				if iNdEx >= l {
					return io.ErrUnexpectedEOF
				}
				b := dAtA[iNdEx]
				iNdEx++
				msglen |= int(b&0x7F) << shift
				if b < 0x80 {
					break
				}
			}
			if msglen < 0 {
				return ErrInvalidLengthMetrics
			}
			postIndex := iNdEx + msglen
			if postIndex < 0 {
				return ErrInvalidLengthMetrics
			}
			if postIndex > l {
				return io.ErrUnexpectedEOF
			}
			m.Label = append(m.Label, LabelPair{})
			if err := m.Label[len(m.Label)-1].Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
				return err
			}
			iNdEx = postIndex
		case 2:
			if wireType != 1 {
				return fmt.Errorf("proto: wrong wireType = %d for field Value", wireType)
			}
			var v uint64
			if (iNdEx + 8) > l {
				return io.ErrUnexpectedEOF
			}
			v = uint64(encoding_binary.LittleEndian.Uint64(dAtA[iNdEx:]))
			iNdEx += 8
			m.Value = float64(math.Float64frombits(v))
		case 3:
			if wireType != 2 {
				return fmt.Errorf("proto: wrong wireType = %d for field Timestamp", wireType)
			}
			var msglen int
			for shift := uint(0); ; shift += 7 {
				if shift >= 64 {
					return ErrIntOverflowMetrics
				}
				if iNdEx >= l {
					return io.ErrUnexpectedEOF
				}
				b := dAtA[iNdEx]
				iNdEx++
				msglen |= int(b&0x7F) << shift
				if b < 0x80 {
					break
				}
			}
			if msglen < 0 {
				return ErrInvalidLengthMetrics
			}
			postIndex := iNdEx + msglen
			if postIndex < 0 {
				return ErrInvalidLengthMetrics
			}
			if postIndex > l {
				return io.ErrUnexpectedEOF
			}
			if m.Timestamp == nil {
				m.Timestamp = &types.Timestamp{}
			}
			if err := m.Timestamp.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
				return err
			}
			iNdEx = postIndex
		default:
			iNdEx = preIndex
			skippy, err := skipMetrics(dAtA[iNdEx:])
			if err != nil {
				return err
			}
			if (skippy < 0) || (iNdEx+skippy) < 0 {
				return ErrInvalidLengthMetrics
			}
			if (iNdEx + skippy) > l {
				return io.ErrUnexpectedEOF
			}
			m.XXX_unrecognized = append(m.XXX_unrecognized, dAtA[iNdEx:iNdEx+skippy]...)
			iNdEx += skippy
		}
	}

	if iNdEx > l {
		return io.ErrUnexpectedEOF
	}
	return nil
}