snarkvm-circuit-program 0.9.13

// Copyright (C) 2019-2023 Aleo Systems Inc.
// This file is part of the snarkVM library.

// The snarkVM library is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// The snarkVM library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with the snarkVM library. If not, see <https://www.gnu.org/licenses/>.

use super::*;

impl<A: Aleo, Private: Visibility<A>> Record<A, Private> {
    /// Returns the number of field elements to encode `self`.
    pub(crate) fn num_randomizers(&self) -> u16 {
        // Initialize an tracker for the number of randomizers.
        let mut num_randomizers: u16 = 0;

        // If the owner is private, increment the number of randomizers by 1.
        if self.owner.is_private().eject_value() {
            num_randomizers += 1;
        }

        // If the gates is private, increment the number of randomizers by 1.
        if self.gates.is_private().eject_value() {
            num_randomizers += 1;
        }

        // Increment the number of randomizers by the number of data randomizers.
        for (_, entry) in self.data.iter() {
            num_randomizers = match num_randomizers.checked_add(entry.num_randomizers()) {
                Some(num_randomizers) => num_randomizers,
                None => A::halt("Number of randomizers exceeds the maximum allowed size."),
            };
        }

        // Ensure the number of randomizers does not exceed the maximum allowed size.
        match num_randomizers as u32 <= A::MAX_DATA_SIZE_IN_FIELDS {
            true => num_randomizers,
            false => A::halt("Number of randomizers exceeds the maximum allowed size."),
        }
    }
}