Method attach_column

ciphercore-base/src/mpc/mpc_psi.rs:505–533

Attach a given shared column to shares of columns

(&mut self, header: &str, column: Node)

    // Attach a given shared column to shares of columns
    fn attach_column(&mut self, header: &str, column: Node) -> Result<()> {
        match self {
            Columns::Public(columns) => {
                if is_shared(&column)? {
                    return Err(runtime_error!("New columns should be public"));
                }
                columns.push((header.to_owned(), column));
            }
            Columns::Shared(shares) => {
                if is_shared(&column)? {
                    for (share_id, share) in shares.iter_mut().enumerate() {
                        share.push((header.to_owned(), column.tuple_get(share_id as u64)?));
                    }
                } else {
                    // If column is public, fake its sharing as (column, 0, 0).
                    let zero_share = zeros_like(column.clone())?;
                    for (share_id, share) in shares.iter_mut().enumerate() {
                        if share_id == 0 {
                            share.push((header.to_owned(), column.clone()));
                        } else {
                            share.push((header.to_owned(), zero_share.clone()));
                        }
                    }
                }
            }
        }

        Ok(())
    }

    fn extract_and_attach(&mut self, header: &str, columns_shares: &DataShares) -> Result<()> {
        if columns_shares.column_has_mask(header) {