1use crate::ffi::vec_znx_big;
  2use crate::znx_base::{ZnxInfos, ZnxView};
  3use crate::{Backend, DataView, DataViewMut, FFT64, Module, alloc_aligned};
  4use std::marker::PhantomData;
  5
  6// const VEC_ZNX_BIG_ROWS: usize = 1;
  7
  8/// VecZnxBig is `Backend` dependent, denoted with backend generic `B`
  9pub struct VecZnxBig<D, B> {
 10    data: D,
 11    n: usize,
 12    cols: usize,
 13    size: usize,
 14    _phantom: PhantomData<B>,
 15}
 16
 17impl<D, B> ZnxInfos for VecZnxBig<D, B> {
 18    fn cols(&self) -> usize {
 19        self.cols
 20    }
 21
 22    fn rows(&self) -> usize {
 23        1
 24    }
 25
 26    fn n(&self) -> usize {
 27        self.n
 28    }
 29
 30    fn size(&self) -> usize {
 31        self.size
 32    }
 33
 34    fn sl(&self) -> usize {
 35        self.cols() * self.n()
 36    }
 37}
 38
 39impl<D, B> DataView for VecZnxBig<D, B> {
 40    type D = D;
 41    fn data(&self) -> &Self::D {
 42        &self.data
 43    }
 44}
 45
 46impl<D, B> DataViewMut for VecZnxBig<D, B> {
 47    fn data_mut(&mut self) -> &mut Self::D {
 48        &mut self.data
 49    }
 50}
 51
 52impl<D: AsRef<[u8]>> ZnxView for VecZnxBig<D, FFT64> {
 53    type Scalar = i64;
 54}
 55
 56pub(crate) fn bytes_of_vec_znx_big<B: Backend>(module: &Module<B>, cols: usize, size: usize) -> usize {
 57    unsafe { vec_znx_big::bytes_of_vec_znx_big(module.ptr, size as u64) as usize * cols }
 58}
 59
 60impl<D: From<Vec<u8>>, B: Backend> VecZnxBig<D, B> {
 61    pub(crate) fn new(module: &Module<B>, cols: usize, size: usize) -> Self {
 62        let data = alloc_aligned::<u8>(bytes_of_vec_znx_big(module, cols, size));
 63        Self {
 64            data: data.into(),
 65            n: module.n(),
 66            cols,
 67            size,
 68            _phantom: PhantomData,
 69        }
 70    }
 71
 72    pub(crate) fn new_from_bytes(module: &Module<B>, cols: usize, size: usize, bytes: impl Into<Vec<u8>>) -> Self {
 73        let data: Vec<u8> = bytes.into();
 74        assert!(data.len() == bytes_of_vec_znx_big(module, cols, size));
 75        Self {
 76            data: data.into(),
 77            n: module.n(),
 78            cols,
 79            size,
 80            _phantom: PhantomData,
 81        }
 82    }
 83}
 84
 85impl<D, B> VecZnxBig<D, B> {
 86    pub(crate) fn from_data(data: D, n: usize, cols: usize, size: usize) -> Self {
 87        Self {
 88            data,
 89            n,
 90            cols,
 91            size,
 92            _phantom: PhantomData,
 93        }
 94    }
 95}
 96
 97pub type VecZnxBigOwned<B> = VecZnxBig<Vec<u8>, B>;
 98
 99impl<B> VecZnxBig<Vec<u8>, B> {
100    pub fn to_mut(&mut self) -> VecZnxBig<&mut [u8], B> {
101        VecZnxBig {
102            data: self.data.as_mut_slice(),
103            n: self.n,
104            cols: self.cols,
105            size: self.size,
106            _phantom: PhantomData,
107        }
108    }
109
110    pub fn to_ref(&self) -> VecZnxBig<&[u8], B> {
111        VecZnxBig {
112            data: self.data.as_slice(),
113            n: self.n,
114            cols: self.cols,
115            size: self.size,
116            _phantom: PhantomData,
117        }
118    }
119}