perf: improve rlp, update Address methods #118
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DaniPopes
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mattsse
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Jun 16, 2023
| } else if *self < <$t>::from(EMPTY_STRING_CODE) { | ||
| out.put_u8(u8::try_from(*self).unwrap()); | ||
| } else if x < EMPTY_STRING_CODE as $t { | ||
| out.put_u8(x as u8); |
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| // minus 1 to account for the list header itself | ||
| out[0] = EMPTY_LIST_CODE + len as u8 - 1; | ||
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| // address header + address | ||
| out[1] = EMPTY_STRING_CODE + 20; |
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i don't know rlp enough to comment on what's going on here
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It's basically just inlining Header { list: true, len: len - 1 }.encode() and self.encode()
I've added a proptest to verify this
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prestwich
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Motivation
We can use
leading_zeros()to determine ahead of time how many bytes we need to skip, instead of iterating over the bytes and counting them.Assembly diff of
<u64 as Encodable>::encode: https://www.diffchecker.com/TxUdi1il/Solution
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