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improve hashed_storage_read

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This commit is contained in:
Simon Gardling 2022-05-17 10:26:06 -04:00
parent 4227437475
commit 1e9342a949
1 changed files with 4 additions and 7 deletions
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11
src/misc.rs
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@ -335,15 +335,12 @@ pub fn hashed_storage_read(data: &str) -> Option<(HashBytes, Vec<u8>)> {
}
// can't use data.as_bytes() here for some reason, seems to break on wasm?
// Other memory trickery seems to not worm on wasm. so I was unable to implement a more effecient manner of doing this
let decoded_1 = data.chars().map(|c| c as u8).collect::<Vec<u8>>();
let decoded_1: Vec<u8> = data.chars().map(|c| c as u8).collect::<Vec<u8>>();
let (hash, cached_data) = {
let (a, b) = unsafe { decoded_1.split_at_unchecked(HASH_LENGTH) };
unsafe { (&*(a.as_ptr() as *const HashBytes), b) }
};
let hash: HashBytes = unsafe { *(decoded_1[..HASH_LENGTH].as_ptr() as *const HashBytes) };
let cached_data = decoded_1[HASH_LENGTH..].to_vec();
debug_assert!(!cached_data.is_empty());
Some((*hash, cached_data.to_vec()))
Some((hash, cached_data))
}