Revision control
Copy as Markdown
Other Tools
// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// Copyright by contributors to this project.
// SPDX-License-Identifier: (Apache-2.0 OR MIT)
use crate::{MlsDecode, MlsEncode, MlsSize};
use alloc::vec::Vec;
macro_rules! impl_stdint {
($t:ty) => {
impl MlsSize for $t {
fn mls_encoded_len(&self) -> usize {
core::mem::size_of::<$t>()
}
}
impl MlsEncode for $t {
fn mls_encode(&self, writer: &mut Vec<u8>) -> Result<(), crate::Error> {
writer.extend(self.to_be_bytes());
Ok(())
}
}
impl MlsDecode for $t {
fn mls_decode(reader: &mut &[u8]) -> Result<Self, crate::Error> {
MlsDecode::mls_decode(reader).map(<$t>::from_be_bytes)
}
}
};
}
impl_stdint!(u8);
impl_stdint!(u16);
impl_stdint!(u32);
impl_stdint!(u64);
impl_stdint!(u128);
#[cfg(test)]
mod tests {
#[cfg(target_arch = "wasm32")]
use wasm_bindgen_test::wasm_bindgen_test as test;
use crate::{MlsDecode, MlsEncode};
use alloc::vec;
#[test]
fn u8_round_trip() {
let serialized = 42u8.mls_encode_to_vec().unwrap();
assert_eq!(serialized, vec![42u8]);
let recovered = u8::mls_decode(&mut &*serialized).unwrap();
assert_eq!(recovered, 42u8);
}
#[test]
fn u16_round_trip() {
let serialized = 1024u16.mls_encode_to_vec().unwrap();
assert_eq!(serialized, vec![4, 0]);
let recovered = u16::mls_decode(&mut &*serialized).unwrap();
assert_eq!(recovered, 1024u16);
}
#[test]
fn u32_round_trip() {
let serialized = 1000000u32.mls_encode_to_vec().unwrap();
assert_eq!(serialized, vec![0, 15, 66, 64]);
let recovered = u32::mls_decode(&mut &*serialized).unwrap();
assert_eq!(recovered, 1000000u32);
}
#[test]
fn u64_round_trip() {
let serialized = 100000000000u64.mls_encode_to_vec().unwrap();
assert_eq!(serialized, vec![0, 0, 0, 23, 72, 118, 232, 0]);
let recovered = u64::mls_decode(&mut &*serialized).unwrap();
assert_eq!(recovered, 100000000000u64);
}
#[test]
fn u128_round_trip() {
let serialized = 10000000000000000u128.mls_encode_to_vec().unwrap();
assert_eq!(
serialized,
vec![0, 0, 0, 0, 0, 0, 0, 0, 0, 35, 134, 242, 111, 193, 0, 0]
);
let recovered = u128::mls_decode(&mut &*serialized).unwrap();
assert_eq!(recovered, 10000000000000000u128);
}
}