void ArrowLayoutInit()

in src/nanoarrow/utils.c [60:192]
114 lines of code
32 McCabe index (conditional complexity)

void ArrowLayoutInit(struct ArrowLayout* layout, enum ArrowType storage_type) {
  layout->buffer_type[0] = NANOARROW_BUFFER_TYPE_VALIDITY;
  layout->buffer_data_type[0] = NANOARROW_TYPE_BOOL;
  layout->buffer_type[1] = NANOARROW_BUFFER_TYPE_DATA;
  layout->buffer_data_type[1] = storage_type;
  layout->buffer_type[2] = NANOARROW_BUFFER_TYPE_NONE;
  layout->buffer_data_type[2] = NANOARROW_TYPE_UNINITIALIZED;

  layout->element_size_bits[0] = 1;
  layout->element_size_bits[1] = 0;
  layout->element_size_bits[2] = 0;

  layout->child_size_elements = 0;

  switch (storage_type) {
    case NANOARROW_TYPE_UNINITIALIZED:
    case NANOARROW_TYPE_NA:
      layout->buffer_type[0] = NANOARROW_BUFFER_TYPE_NONE;
      layout->buffer_data_type[0] = NANOARROW_TYPE_UNINITIALIZED;
      layout->buffer_type[1] = NANOARROW_BUFFER_TYPE_NONE;
      layout->buffer_data_type[1] = NANOARROW_TYPE_UNINITIALIZED;
      layout->element_size_bits[0] = 0;
      break;

    case NANOARROW_TYPE_LIST:
    case NANOARROW_TYPE_MAP:
      layout->buffer_type[1] = NANOARROW_BUFFER_TYPE_DATA_OFFSET;
      layout->buffer_data_type[1] = NANOARROW_TYPE_INT32;
      layout->element_size_bits[1] = 32;
      break;

    case NANOARROW_TYPE_LARGE_LIST:
      layout->buffer_type[1] = NANOARROW_BUFFER_TYPE_DATA_OFFSET;
      layout->buffer_data_type[1] = NANOARROW_TYPE_INT64;
      layout->element_size_bits[1] = 64;
      break;

    case NANOARROW_TYPE_STRUCT:
    case NANOARROW_TYPE_FIXED_SIZE_LIST:
      layout->buffer_type[1] = NANOARROW_BUFFER_TYPE_NONE;
      layout->buffer_data_type[1] = NANOARROW_TYPE_UNINITIALIZED;
      break;

    case NANOARROW_TYPE_BOOL:
      layout->element_size_bits[1] = 1;
      break;

    case NANOARROW_TYPE_UINT8:
    case NANOARROW_TYPE_INT8:
      layout->element_size_bits[1] = 8;
      break;

    case NANOARROW_TYPE_UINT16:
    case NANOARROW_TYPE_INT16:
    case NANOARROW_TYPE_HALF_FLOAT:
      layout->element_size_bits[1] = 16;
      break;

    case NANOARROW_TYPE_UINT32:
    case NANOARROW_TYPE_INT32:
    case NANOARROW_TYPE_FLOAT:
      layout->element_size_bits[1] = 32;
      break;
    case NANOARROW_TYPE_INTERVAL_MONTHS:
      layout->buffer_data_type[1] = NANOARROW_TYPE_INT32;
      layout->element_size_bits[1] = 32;
      break;

    case NANOARROW_TYPE_UINT64:
    case NANOARROW_TYPE_INT64:
    case NANOARROW_TYPE_DOUBLE:
    case NANOARROW_TYPE_INTERVAL_DAY_TIME:
      layout->element_size_bits[1] = 64;
      break;

    case NANOARROW_TYPE_DECIMAL128:
    case NANOARROW_TYPE_INTERVAL_MONTH_DAY_NANO:
      layout->element_size_bits[1] = 128;
      break;

    case NANOARROW_TYPE_DECIMAL256:
      layout->element_size_bits[1] = 256;
      break;

    case NANOARROW_TYPE_FIXED_SIZE_BINARY:
      layout->buffer_data_type[1] = NANOARROW_TYPE_BINARY;
      break;

    case NANOARROW_TYPE_DENSE_UNION:
      layout->buffer_type[0] = NANOARROW_BUFFER_TYPE_TYPE_ID;
      layout->buffer_data_type[0] = NANOARROW_TYPE_INT8;
      layout->element_size_bits[0] = 8;
      layout->buffer_type[1] = NANOARROW_BUFFER_TYPE_UNION_OFFSET;
      layout->buffer_data_type[1] = NANOARROW_TYPE_INT32;
      layout->element_size_bits[1] = 32;
      break;

    case NANOARROW_TYPE_SPARSE_UNION:
      layout->buffer_type[0] = NANOARROW_BUFFER_TYPE_TYPE_ID;
      layout->buffer_data_type[0] = NANOARROW_TYPE_INT8;
      layout->element_size_bits[0] = 8;
      layout->buffer_type[1] = NANOARROW_BUFFER_TYPE_NONE;
      layout->buffer_data_type[1] = NANOARROW_TYPE_UNINITIALIZED;
      break;

    case NANOARROW_TYPE_STRING:
    case NANOARROW_TYPE_BINARY:
      layout->buffer_type[1] = NANOARROW_BUFFER_TYPE_DATA_OFFSET;
      layout->buffer_data_type[1] = NANOARROW_TYPE_INT32;
      layout->element_size_bits[1] = 32;
      layout->buffer_type[2] = NANOARROW_BUFFER_TYPE_DATA;
      layout->buffer_data_type[2] = storage_type;
      break;

    case NANOARROW_TYPE_LARGE_STRING:
      layout->buffer_type[1] = NANOARROW_BUFFER_TYPE_DATA_OFFSET;
      layout->buffer_data_type[1] = NANOARROW_TYPE_INT64;
      layout->element_size_bits[1] = 64;
      layout->buffer_type[2] = NANOARROW_BUFFER_TYPE_DATA;
      layout->buffer_data_type[2] = NANOARROW_TYPE_STRING;
      break;
    case NANOARROW_TYPE_LARGE_BINARY:
      layout->buffer_type[1] = NANOARROW_BUFFER_TYPE_DATA_OFFSET;
      layout->buffer_data_type[1] = NANOARROW_TYPE_INT64;
      layout->element_size_bits[1] = 64;
      layout->buffer_type[2] = NANOARROW_BUFFER_TYPE_DATA;
      layout->buffer_data_type[2] = NANOARROW_TYPE_BINARY;
      break;

    default:
      break;
  }
}