use crate::{build_mle, errors::HyperPlonkErrors};
|
|
use ark_ff::PrimeField;
|
|
use ark_poly::DenseMultilinearExtension;
|
|
use ark_std::log2;
|
|
use std::rc::Rc;
|
|
|
|
/// A row of selector of width `#selectors`
|
|
#[derive(Debug, Clone, PartialEq, Eq)]
|
|
pub struct SelectorRow<F: PrimeField>(pub(crate) Vec<F>);
|
|
|
|
/// A column of selectors of length `#constraints`
|
|
#[derive(Debug, Clone, PartialEq, Eq, Default)]
|
|
pub struct SelectorColumn<F: PrimeField>(pub(crate) Vec<F>);
|
|
|
|
impl<F: PrimeField> SelectorColumn<F> {
|
|
/// the number of variables of the multilinear polynomial that presents a
|
|
/// column.
|
|
pub fn get_nv(&self) -> usize {
|
|
log2(self.0.len()) as usize
|
|
}
|
|
|
|
/// Append a new element to the selector column
|
|
pub fn append(&mut self, new_element: F) {
|
|
self.0.push(new_element)
|
|
}
|
|
|
|
/// Build selector columns from rows
|
|
pub fn from_selector_rows(
|
|
selector_rows: &[SelectorRow<F>],
|
|
) -> Result<Vec<Self>, HyperPlonkErrors> {
|
|
if selector_rows.is_empty() {
|
|
return Err(HyperPlonkErrors::InvalidParameters(
|
|
"empty witness rows".to_string(),
|
|
));
|
|
}
|
|
|
|
let mut res = Vec::with_capacity(selector_rows.len());
|
|
let num_colnumns = selector_rows[0].0.len();
|
|
|
|
for i in 0..num_colnumns {
|
|
let mut cur_column = Vec::new();
|
|
for row in selector_rows.iter() {
|
|
cur_column.push(row.0[i])
|
|
}
|
|
res.push(Self(cur_column))
|
|
}
|
|
|
|
Ok(res)
|
|
}
|
|
}
|
|
|
|
impl<F: PrimeField> From<&SelectorColumn<F>> for DenseMultilinearExtension<F> {
|
|
fn from(witness: &SelectorColumn<F>) -> Self {
|
|
let nv = witness.get_nv();
|
|
Self::from_evaluations_slice(nv, witness.0.as_ref())
|
|
}
|
|
}
|
|
|
|
impl<F: PrimeField> SelectorRow<F> {
|
|
/// Build MLE from matrix of selectors.
|
|
///
|
|
/// Given a matrix := [row1, row2, ...] where
|
|
/// row1:= (a1, a2, ...)
|
|
/// row2:= (b1, b2, ...)
|
|
/// row3:= (c1, c2, ...)
|
|
///
|
|
/// output mle(a1,b1,c1, ...), mle(a2,b2,c2, ...), ...
|
|
pub fn build_mles(
|
|
matrix: &[Self],
|
|
) -> Result<Vec<Rc<DenseMultilinearExtension<F>>>, HyperPlonkErrors> {
|
|
build_mle!(matrix)
|
|
}
|
|
}
|