Method GetNumBuffers

cpp/src/gandiva/eval_batch.h:53–53

  int64_t* GetBufferOffsetArray() { return buffer_offsets_array_.get(); }

  int GetNumBuffers() const { return num_buffers_; }

  const uint8_t* GetBuffer(int idx) const {
    ARROW_DCHECK(idx <= num_buffers_);