snarkvm_console_program/data/plaintext/
size_in_fields.rs

1// Copyright (c) 2019-2025 Provable Inc.
2// This file is part of the snarkVM library.
3
4// Licensed under the Apache License, Version 2.0 (the "License");
5// you may not use this file except in compliance with the License.
6// You may obtain a copy of the License at:
7
8// http://www.apache.org/licenses/LICENSE-2.0
9
10// Unless required by applicable law or agreed to in writing, software
11// distributed under the License is distributed on an "AS IS" BASIS,
12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13// See the License for the specific language governing permissions and
14// limitations under the License.
15
16use super::*;
17
18impl<N: Network> Visibility for Plaintext<N> {
19    type Boolean = Boolean<N>;
20
21    /// Returns the number of field elements to encode `self`.
22    fn size_in_fields(&self) -> Result<u16> {
23        // Compute the number of bits.
24        let num_bits = self.to_bits_le().len() + 1; // 1 extra bit for the terminus indicator.
25        // Compute the ceiling division of the number of bits by the number of bits in a field element.
26        let num_fields = num_bits.div_ceil(Field::<N>::size_in_data_bits());
27        // Ensure the number of field elements does not exceed the maximum allowed size.
28        match num_fields <= N::MAX_DATA_SIZE_IN_FIELDS as usize {
29            // Return the number of field elements.
30            true => Ok(u16::try_from(num_fields).or_halt_with::<N>("Plaintext exceeds u16::MAX field elements.")),
31            false => bail!("Plaintext cannot exceed {} field elements.", N::MAX_DATA_SIZE_IN_FIELDS),
32        }
33    }
34}
snarkvm_console_program/data/plaintext/size_in_fields.rs

snarkvm_console_program/data/plaintext/
size_in_fields.rs
