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perf: misc Codec improvements (#5642)

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This commit is contained in:
DaniPopes
2023-11-30 20:14:47 +01:00
committed by GitHub
parent 12d9559333
commit a4ed76d058
1 changed files with 5 additions and 13 deletions
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18
crates/storage/codecs/src/lib.rs
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@ -89,7 +89,7 @@ impl_uint_compact!(u8, u64, u128);
impl<T> Compact for Vec<T>
where
T: Compact + Default,
T: Compact,
{
/// Returns 0 since we won't include it in the `StructFlags`.
fn to_compact<B>(self, buf: &mut B) -> usize
@ -116,15 +116,11 @@ where
fn from_compact(buf: &[u8], _: usize) -> (Self, &[u8]) {
let (length, mut buf) = decode_varuint(buf);
let mut list = Vec::with_capacity(length);
#[allow(unused_assignments)]
let mut len = 0;
for _ in 0..length {
#[allow(unused_assignments)]
let mut element = T::default();
let len;
(len, buf) = decode_varuint(buf);
(element, _) = T::from_compact(&buf[..len], len);
let (element, _) = T::from_compact(&buf[..len], len);
buf.advance(len);
list.push(element);
@ -139,7 +135,6 @@ where
B: bytes::BufMut + AsMut<[u8]>,
{
encode_varuint(self.len(), buf);
for element in self {
element.to_compact(buf);
}
@ -152,11 +147,8 @@ where
let mut list = Vec::with_capacity(length);
for _ in 0..length {
#[allow(unused_assignments)]
let mut element = T::default();
let element;
(element, buf) = T::from_compact(buf, len);
list.push(element);
}
@ -331,7 +323,7 @@ where
fn decode_varuint(mut buf: &[u8]) -> (usize, &[u8]) {
let mut value: usize = 0;
for i in 0..33 {
for i in 0usize..33 {
let byte = buf.get_u8();
if byte < 128 {
value |= usize::from(byte) << (i * 7);