snarkvm_console_program/state_path/transition_leaf/
bytes.rs

1// Copyright 2024 Aleo Network Foundation
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> FromBytes for TransitionLeaf<N> {
19    /// Reads the transition leaf from a buffer.
20    fn read_le<R: Read>(mut reader: R) -> IoResult<Self> {
21        // Read the version.
22        let version = FromBytes::read_le(&mut reader)?;
23        // Ensure the version is valid.
24        if version != TRANSITION_LEAF_VERSION {
25            return Err(error("Invalid transition leaf version"));
26        }
27        // Read the index.
28        let index = FromBytes::read_le(&mut reader)?;
29        // Read the variant.
30        let variant = FromBytes::read_le(&mut reader)?;
31        // Read the ID.
32        let id = FromBytes::read_le(&mut reader)?;
33        // Return the transition leaf.
34        Ok(Self::from(version, index, variant, id))
35    }
36}
37
38impl<N: Network> ToBytes for TransitionLeaf<N> {
39    /// Writes the transition leaf to a buffer.
40    fn write_le<W: Write>(&self, mut writer: W) -> IoResult<()> {
41        // Write the version.
42        self.version.write_le(&mut writer)?;
43        // Write the index.
44        self.index.write_le(&mut writer)?;
45        // Write the variant.
46        self.variant.write_le(&mut writer)?;
47        // Write the ID.
48        self.id.write_le(&mut writer)
49    }
50}
51
52#[cfg(test)]
53mod tests {
54    use super::*;
55
56    const ITERATIONS: u64 = 1000;
57
58    #[test]
59    fn test_bytes() -> Result<()> {
60        let mut rng = TestRng::default();
61
62        for _ in 0..ITERATIONS {
63            // Sample the leaf.
64            let expected = test_helpers::sample_leaf(&mut rng);
65
66            // Check the byte representation.
67            let expected_bytes = expected.to_bytes_le()?;
68            assert_eq!(expected, TransitionLeaf::read_le(&expected_bytes[..])?);
69        }
70        Ok(())
71    }
72}
snarkvm_console_program/state_path/transition_leaf/bytes.rs

snarkvm_console_program/state_path/transition_leaf/
bytes.rs
