Variant toVariant()

in src/qpid/amqp_0_10/Codecs.cpp [100:167]
55 lines of code
35 McCabe index (conditional complexity)

Variant toVariant(boost::shared_ptr<FieldValue> in)
{
    Variant out;
    //based on AMQP 0-10 typecode, pick most appropriate variant type
    switch (in->getType()) {
        //Fixed Width types:
      case 0x00: out.setEncoding(amqp0_10_binary); // Fallthru
      case 0x01: out = in->getIntegerValue<int8_t>(); break;
      case 0x02: out = in->getIntegerValue<uint8_t>(); break;
      case 0x04: break; //TODO: iso-8859-15 char
      case 0x08: out = static_cast<bool>(in->getIntegerValue<uint8_t>()); break;
      case 0x10: out.setEncoding(amqp0_10_binary); // Fallthru
      case 0x11: out = in->getIntegerValue<int16_t, 2>(); break;
      case 0x12: out = in->getIntegerValue<uint16_t, 2>(); break;
      case 0x20: out.setEncoding(amqp0_10_binary); // Fallthru
      case 0x21: out = in->getIntegerValue<int32_t, 4>(); break;
      case 0x22: out = in->getIntegerValue<uint32_t, 4>(); break;
      case 0x23: out = in->get<float>(); break;
      case 0x27: break; //TODO: utf-32 char
      case 0x30: out.setEncoding(amqp0_10_binary); // Fallthru
      case 0x31: out = in->getIntegerValue<int64_t, 8>(); break;
      case 0x38: out.setEncoding(amqp0_10_datetime); // Fallthru - treat datetime as uint64_t, but set encoding
      case 0x32: out = in->getIntegerValue<uint64_t, 8>(); break;
      case 0x33: out = in->get<double>(); break;

      case 0x48: out = getUuid(*in); break;

        //TODO: figure out whether and how to map values with codes 0x40-0xd8

      case 0xf0: break;//void, which is the default value for Variant
      case 0xf1: out.setEncoding(amqp0_10_bit); break;//treat 'bit' as void, which is the default value for Variant

        //Variable Width types:
        //strings:
      case 0x80: 
      case 0x84:
      case 0x85:
      case 0x86:
      case 0x90:
      case 0x94:
      case 0x95:
      case 0x96: 
      case 0xa0:
      case 0xab:
        out = in->get<std::string>();
        setEncodingFor(out, in->getType());
        break;

      case 0xa8:
        out = Variant::Map();
        translate<FieldTable>(in, out.asMap(), &toVariantMapEntry);
        break;

      case 0xa9:
        out = Variant::List();
        translate<List>(in, out.asList(), &toVariant);
        break;
      case 0xaa: //convert amqp0-10 array into variant list
        out = Variant::List();
        translate<Array>(in, out.asList(), &toVariant);
        break;

      default:
        //error?
        break;
    }
    return out;
}