snarkvm_console_program/data/value/
bytes.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> FromBytes for Value<N> {
19    /// Reads the entry from a buffer.
20    fn read_le<R: Read>(mut reader: R) -> IoResult<Self> {
21        // Read the index.
22        let index = u8::read_le(&mut reader)?;
23        // Read the entry.
24        let entry = match index {
25            0 => Self::Plaintext(Plaintext::read_le(&mut reader)?),
26            1 => Self::Record(Record::read_le(&mut reader)?),
27            2 => Self::Future(Future::read_le(&mut reader)?),
28            3.. => return Err(error(format!("Failed to decode value variant {index}"))),
29        };
30        Ok(entry)
31    }
32}
33
34impl<N: Network> ToBytes for Value<N> {
35    /// Writes the entry to a buffer.
36    fn write_le<W: Write>(&self, mut writer: W) -> IoResult<()> {
37        match self {
38            Self::Plaintext(plaintext) => {
39                0u8.write_le(&mut writer)?;
40                plaintext.write_le(&mut writer)
41            }
42            Self::Record(record) => {
43                1u8.write_le(&mut writer)?;
44                record.write_le(&mut writer)
45            }
46            Self::Future(future) => {
47                2u8.write_le(&mut writer)?;
48                future.write_le(&mut writer)
49            }
50        }
51    }
52}
53
54#[cfg(test)]
55mod tests {
56    use super::*;
57    use snarkvm_console_network::MainnetV0;
58
59    type CurrentNetwork = MainnetV0;
60
61    #[test]
62    fn test_value_plaintext_bytes() -> Result<()> {
63        // Construct a new plaintext value.
64        let expected = Value::Plaintext(Plaintext::<CurrentNetwork>::from_str(
65            "{ owner: aleo1d5hg2z3ma00382pngntdp68e74zv54jdxy249qhaujhks9c72yrs33ddah, token_amount: 100u64 }",
66        )?);
67
68        // Check the byte representation.
69        let expected_bytes = expected.to_bytes_le()?;
70        assert_eq!(expected, Value::read_le(&expected_bytes[..])?);
71        Ok(())
72    }
73
74    #[test]
75    fn test_value_record_bytes() -> Result<()> {
76        // Construct a new record value.
77        let expected = Value::Record(Record::<CurrentNetwork, Plaintext<CurrentNetwork>>::from_str(
78            "{ owner: aleo1d5hg2z3ma00382pngntdp68e74zv54jdxy249qhaujhks9c72yrs33ddah.private, token_amount: 100u64.private, _nonce: 0group.public }",
79        )?);
80
81        // Check the byte representation.
82        let expected_bytes = expected.to_bytes_le()?;
83        assert_eq!(expected, Value::read_le(&expected_bytes[..])?);
84        Ok(())
85    }
86}
snarkvm_console_program/data/value/bytes.rs

snarkvm_console_program/data/value/
bytes.rs
