_cbor_load_uint32
union _cbor_float_helper helper = {.as_uint = _cbor_load_uint32(source)};
uint32_t _cbor_load_uint32(const unsigned char *source);
callbacks->uint32(context, _cbor_load_uint32(source + 1));
callbacks->negint32(context, _cbor_load_uint32(source + 1));
READ_CLAIM_INVOKE(byte_string, _cbor_load_uint32, 4);
READ_CLAIM_INVOKE(string, _cbor_load_uint32, 4);
callbacks->array_start(context, _cbor_load_uint32(source + 1));
callbacks->map_start(context, _cbor_load_uint32(source + 1));
callbacks->tag(context, _cbor_load_uint32(source + 1));