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serialize.rs
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serialize.rs
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// Copyright (C) 2019-2023 Aleo Systems Inc.
// This file is part of the snarkVM library.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at:
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use super::*;
impl<N: Network> Serialize for Transition<N> {
/// Serializes the transition into string or bytes.
fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
match serializer.is_human_readable() {
true => {
let mut transition = serializer.serialize_struct("Transition", 7)?;
transition.serialize_field("id", &self.id)?;
transition.serialize_field("program", &self.program_id)?;
transition.serialize_field("function", &self.function_name)?;
transition.serialize_field("inputs", &self.inputs)?;
transition.serialize_field("outputs", &self.outputs)?;
transition.serialize_field("tpk", &self.tpk)?;
transition.serialize_field("tcm", &self.tcm)?;
transition.serialize_field("scm", &self.scm)?;
transition.end()
}
false => ToBytesSerializer::serialize_with_size_encoding(self, serializer),
}
}
}
impl<'de, N: Network> Deserialize<'de> for Transition<N> {
/// Deserializes the transition from a string or bytes.
fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
match deserializer.is_human_readable() {
true => {
// Parse the transition from a string into a value.
let mut transition = serde_json::Value::deserialize(deserializer)?;
// Retrieve the ID.
let id: N::TransitionID = DeserializeExt::take_from_value::<D>(&mut transition, "id")?;
// Recover the transition.
let transition = Self::new(
// Retrieve the program ID.
DeserializeExt::take_from_value::<D>(&mut transition, "program")?,
// Retrieve the function name.
DeserializeExt::take_from_value::<D>(&mut transition, "function")?,
// Retrieve the inputs.
DeserializeExt::take_from_value::<D>(&mut transition, "inputs")?,
// Retrieve the outputs.
DeserializeExt::take_from_value::<D>(&mut transition, "outputs")?,
// Retrieve the `tpk`.
DeserializeExt::take_from_value::<D>(&mut transition, "tpk")?,
// Retrieve the `tcm`.
DeserializeExt::take_from_value::<D>(&mut transition, "tcm")?,
// Retrieve the `scm`.
DeserializeExt::take_from_value::<D>(&mut transition, "scm")?,
)
.map_err(de::Error::custom)?;
// Ensure the transition ID is correct.
match id == *transition.id() {
true => Ok(transition),
false => Err(de::Error::custom(error("Transition ID mismatch, possible data corruption"))),
}
}
false => FromBytesDeserializer::<Self>::deserialize_with_size_encoding(deserializer, "transition"),
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_serde_json() -> Result<()> {
let rng = &mut TestRng::default();
// Sample the transition.
let expected = crate::transition::test_helpers::sample_transition(rng);
// Serialize
let expected_string = &expected.to_string();
let candidate_string = serde_json::to_string(&expected)?;
assert_eq!(expected, serde_json::from_str(&candidate_string)?);
// Deserialize
assert_eq!(expected, Transition::from_str(expected_string)?);
assert_eq!(expected, serde_json::from_str(&candidate_string)?);
Ok(())
}
#[test]
fn test_bincode() -> Result<()> {
let rng = &mut TestRng::default();
// Sample the transition.
let expected = crate::transition::test_helpers::sample_transition(rng);
// Serialize
let expected_bytes = expected.to_bytes_le()?;
let expected_bytes_with_size_encoding = bincode::serialize(&expected)?;
assert_eq!(&expected_bytes[..], &expected_bytes_with_size_encoding[8..]);
// Deserialize
assert_eq!(expected, Transition::read_le(&expected_bytes[..])?);
assert_eq!(expected, bincode::deserialize(&expected_bytes_with_size_encoding[..])?);
Ok(())
}
}