Function copyNullsBuffer

bolt/vector/DecodedVector.cpp:378–389

Copies 'size' bits from 'nulls' into a newly allocated buffer. Returns nullptr if 'nulls' is null.

/// Copies 'size' bits from 'nulls' into a newly allocated buffer. Returns
/// nullptr if 'nulls' is null.
BufferPtr copyNullsBuffer(
    const uint64_t* nulls,
    vector_size_t size,
    memory::MemoryPool* pool) {
  if (!nulls) {
    return nullptr;
  }

  BufferPtr copy = AlignedBuffer::allocate<bool>(size, pool);
  memcpy(copy->asMutable<uint64_t>(), nulls, BaseVector::byteSize<bool>(size));
  return copy;
}
} // namespace

DecodedVector::DictionaryWrapping DecodedVector::dictionaryWrapping(