1  // Copyright (c) 2019-2025 Alpha-Delta Network Inc.
 2  // This file is part of the alphavm 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  
16  use super::*;
17  
18  impl<N: Network> ToBytes for ValueType<N> {
19      /// Writes the value type to a buffer.
20      fn write_le<W: Write>(&self, mut writer: W) -> IoResult<()> {
21          u8::try_from(self.enum_index()).map_err(error)?.write_le(&mut writer)?;
22          match self {
23              Self::Constant(plaintext_type) => plaintext_type.write_le(&mut writer),
24              Self::Public(plaintext_type) => plaintext_type.write_le(&mut writer),
25              Self::Private(plaintext_type) => plaintext_type.write_le(&mut writer),
26              Self::Record(identifier) => identifier.write_le(&mut writer),
27              Self::ExternalRecord(locator) => locator.write_le(&mut writer),
28              Self::Future(locator) => locator.write_le(&mut writer),
29          }
30      }
31  }
32  
33  impl<N: Network> FromBytes for ValueType<N> {
34      /// Reads the value type from a buffer.
35      fn read_le<R: Read>(mut reader: R) -> IoResult<Self> {
36          let variant = u8::read_le(&mut reader)?;
37          match variant {
38              0 => Ok(Self::Constant(PlaintextType::read_le(&mut reader)?)),
39              1 => Ok(Self::Public(PlaintextType::read_le(&mut reader)?)),
40              2 => Ok(Self::Private(PlaintextType::read_le(&mut reader)?)),
41              3 => Ok(Self::Record(Identifier::read_le(&mut reader)?)),
42              4 => Ok(Self::ExternalRecord(Locator::read_le(&mut reader)?)),
43              5 => Ok(Self::Future(Locator::read_le(&mut reader)?)),
44              6.. => Err(error(format!("Failed to deserialize value type variant {variant}"))),
45          }
46      }
47  }