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Collapse surrogate encode into extend_from_slice call

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David Tolnay
2021-11-24 21:10:13 -08:00
parent 683832a343
commit 48dad22b3f
1 changed files with 6 additions and 12 deletions
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18
src/read.rs
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@@ -864,13 +864,11 @@ fn parse_escape<'de, R: Read<'de>>(
return error(read, ErrorCode::LoneLeadingSurrogateInHexEscape);
}
let utf8_bytes = [
scratch.extend_from_slice(&[
(n >> 12 & 0x0F) as u8 | 0b1110_0000,
(n >> 6 & 0x3F) as u8 | 0b1000_0000,
(n & 0x3F) as u8 | 0b1000_0000,
];
scratch.extend_from_slice(&utf8_bytes);
]);
return Ok(());
}
@@ -886,13 +884,11 @@ fn parse_escape<'de, R: Read<'de>>(
return error(read, ErrorCode::UnexpectedEndOfHexEscape);
}
let utf8_bytes = [
scratch.extend_from_slice(&[
(n1 >> 12 & 0x0F) as u8 | 0b1110_0000,
(n1 >> 6 & 0x3F) as u8 | 0b1000_0000,
(n1 & 0x3F) as u8 | 0b1000_0000,
];
scratch.extend_from_slice(&utf8_bytes);
]);
return Ok(());
}
@@ -904,13 +900,11 @@ fn parse_escape<'de, R: Read<'de>>(
return error(read, ErrorCode::UnexpectedEndOfHexEscape);
}
let utf8_bytes = [
scratch.extend_from_slice(&[
(n1 >> 12 & 0x0F) as u8 | 0b1110_0000,
(n1 >> 6 & 0x3F) as u8 | 0b1000_0000,
(n1 & 0x3F) as u8 | 0b1000_0000,
];
scratch.extend_from_slice(&utf8_bytes);
]);
// The \ prior to this byte started an escape sequence,
// so we need to parse that now.