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use mem::transmute for hashed_storage

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This commit is contained in:
Simon Gardling 2022-05-18 23:52:45 -04:00
parent 4a8bd74d84
commit df89fe10d7
1 changed files with 2 additions and 8 deletions
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10
src/misc.rs
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@ -333,12 +333,7 @@ type HashBytes = [u8; HASH_LENGTH];
#[allow(dead_code)]
pub fn hashed_storage_create(hash: HashBytes, data: &[u8]) -> String {
// cannot use `from_utf8` seems to break on wasm. no clue why
[&hash, data]
.concat()
.iter()
.map(|b| *b as char)
.collect::<String>()
unsafe { std::mem::transmute::<Vec<u8>, String>([&hash, data].concat()) }
}
#[allow(dead_code)]
@ -352,8 +347,7 @@ pub fn hashed_storage_read(data: &str) -> Option<(HashBytes, Vec<u8>)> {
assume(data.len() > HASH_LENGTH);
}
// can't use data.as_bytes() here for some reason, seems to break on wasm?
let decoded_1: Vec<u8> = data.chars().map(|c| c as u8).collect::<Vec<u8>>();
let decoded_1: Vec<u8> = unsafe { std::mem::transmute::<&str, &[u8]>(data) }.to_vec();
let hash: HashBytes = unsafe { *(decoded_1[..HASH_LENGTH].as_ptr() as *const HashBytes) };
let cached_data = decoded_1[HASH_LENGTH..].to_vec();