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 Access<N> {
22      /// Reads the access from a buffer.
23      fn read_le<R: Read>(mut reader: R) -> IoResult<Self> {
24          let variant = u8::read_le(&mut reader)?;
25          match variant {
26              0 => Ok(Self::Member(Identifier::read_le(&mut reader)?)),
27              1 => Ok(Self::Index(U32::read_le(&mut reader)?)),
28              2.. => Err(error(format!("Failed to deserialize access variant {variant}"))),
29          }
30      }
31  }
32  
33  impl<N: Network> ToBytes for Access<N> {
34      /// Write the access to a buffer.
35      fn write_le<W: Write>(&self, mut writer: W) -> IoResult<()> {
36          match self {
37              Access::Member(identifier) => {
38                  0u8.write_le(&mut writer)?;
39                  identifier.write_le(&mut writer)
40              }
41              Access::Index(index) => {
42                  1u8.write_le(&mut writer)?;
43                  index.write_le(&mut writer)
44              }
45          }
46      }
47  }
48  
49  #[cfg(test)]
50  mod tests {
51      use super::*;
52      use crate::data::identifier::tests::sample_identifier;
53      use alphavm_console_network::MainnetV0;
54  
55      type CurrentNetwork = MainnetV0;
56  
57      const ITERATIONS: u32 = 1000;
58  
59      fn check_bytes(expected: Access<CurrentNetwork>) -> Result<()> {
60          // Check the byte representation.
61          let expected_bytes = expected.to_bytes_le()?;
62          assert_eq!(expected, Access::read_le(&expected_bytes[..])?);
63          Ok(())
64      }
65  
66      #[test]
67      fn test_bytes() -> Result<()> {
68          let rng = &mut TestRng::default();
69  
70          for _ in 0..ITERATIONS {
71              // Member
72              let identifier = sample_identifier(rng)?;
73              check_bytes(Access::Member(identifier))?;
74  
75              // Index
76              let index = U32::<CurrentNetwork>::rand(rng);
77              check_bytes(Access::Index(index))?;
78          }
79          Ok(())
80      }
81  }