Function ExecCopyArrayData

cpp/src/arrow/compute/exec_test.cc:887–897

// Scalar function execution

Status ExecCopyArrayData(KernelContext*, const ExecSpan& batch, ExecResult* out) {
  DCHECK_EQ(1, batch.num_values());
  int value_size = batch[0].type()->byte_width();

  const ArraySpan& arg0 = batch[0].array;
  ArrayData* out_arr = out->array_data().get();
  uint8_t* dst = out_arr->buffers[1]->mutable_data() + out_arr->offset * value_size;
  const uint8_t* src = arg0.buffers[1].data + arg0.offset * value_size;
  std::memcpy(dst, src, batch.length * value_size);
  return Status::OK();
}

Status ExecCopyArraySpan(KernelContext*, const ExecSpan& batch, ExecResult* out) {
  DCHECK_EQ(1, batch.num_values());