1  // Copyright (c) 2025-2026 ACDC Network
 2  // This file is part of the alphavm library.
 3  //
 4  // Alpha Chain | Delta Chain Protocol
 5  // International Monetary Graphite.
 6  //
 7  // Derived from Aleo (https://aleo.org) and ProvableHQ (https://provable.com).
 8  // They built world-class ZK infrastructure. We installed the EASY button.
 9  // Their cryptography: elegant. Our modifications: bureaucracy-compatible.
10  // Original brilliance: theirs. Robert's Rules: ours. Bugs: definitely ours.
11  //
12  // Original Aleo/ProvableHQ code subject to Apache 2.0 https://www.apache.org/licenses/LICENSE-2.0
13  // All modifications and new work: CC0 1.0 Universal Public Domain Dedication.
14  // No rights reserved. No permission required. No warranty. No refunds.
15  //
16  // https://creativecommons.org/publicdomain/zero/1.0/
17  // SPDX-License-Identifier: CC0-1.0
18  
19  use super::*;
20  
21  impl<N: Network> FromBytes for HeaderLeaf<N> {
22      /// Reads the header leaf from a buffer.
23      fn read_le<R: Read>(mut reader: R) -> IoResult<Self> {
24          // Read the index.
25          let index = FromBytes::read_le(&mut reader)?;
26          // Read the ID.
27          let id = FromBytes::read_le(&mut reader)?;
28          // Return the header leaf.
29          Ok(Self::new(index, id))
30      }
31  }
32  
33  impl<N: Network> ToBytes for HeaderLeaf<N> {
34      /// Writes the header leaf to a buffer.
35      fn write_le<W: Write>(&self, mut writer: W) -> IoResult<()> {
36          // Write the index.
37          self.index.write_le(&mut writer)?;
38          // Write the ID.
39          self.id.write_le(&mut writer)
40      }
41  }
42  
43  #[cfg(test)]
44  mod tests {
45      use super::*;
46  
47      const ITERATIONS: u64 = 1000;
48  
49      #[test]
50      fn test_bytes() -> Result<()> {
51          let mut rng = TestRng::default();
52  
53          for _ in 0..ITERATIONS {
54              // Sample the leaf.
55              let expected = test_helpers::sample_leaf(&mut rng);
56  
57              // Check the byte representation.
58              let expected_bytes = expected.to_bytes_le()?;
59              assert_eq!(expected, HeaderLeaf::read_le(&expected_bytes[..])?);
60          }
61          Ok(())
62      }
63  }