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usesplit_once instead ofsplit to parse lsn strings#1118

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6 changes: 6 additions & 0 deletionspostgres-types/CHANGELOG.md
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Original file line numberDiff line numberDiff line change
@@ -1,5 +1,11 @@
# Change Log

## Unreleased

### Changed

* `FromStr` implementation for `PgLsn` no longer allocates a `Vec` when splitting an lsn string on it's `/`.

## v0.2.6 - 2023-08-19

### Fixed
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18 changes: 8 additions & 10 deletionspostgres-types/src/pg_lsn.rs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -33,16 +33,14 @@ impl FromStr for PgLsn {
type Err = ParseLsnError;

fn from_str(lsn_str: &str) -> Result<Self, Self::Err> {
let split: Vec<&str> = lsn_str.split('/').collect();
if split.len() == 2 {
let (hi, lo) = (
u64::from_str_radix(split[0], 16).map_err(|_| ParseLsnError(()))?,
u64::from_str_radix(split[1], 16).map_err(|_| ParseLsnError(()))?,
);
Ok(PgLsn((hi << 32) | lo))
} else {
Err(ParseLsnError(()))
}
let Some((split_hi, split_lo)) = lsn_str.split_once('/') else {
return Err(ParseLsnError(()));
};
let (hi, lo) = (
u64::from_str_radix(split_hi, 16).map_err(|_| ParseLsnError(()))?,
u64::from_str_radix(split_lo, 16).map_err(|_| ParseLsnError(()))?,
);
Ok(PgLsn((hi << 32) | lo))
}
}

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