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Slightly more explicit

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This commit is contained in:
Giles Cope 2021-02-12 13:42:42 +00:00
parent cadcf5ed99
commit daa55acdb0
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GPG key ID: DF85161DAE0FF36B
3 changed files with 20 additions and 7 deletions
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14
library/core/src/char/methods.rs
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@ -3,7 +3,7 @@
use crate::slice;
use crate::str::from_utf8_unchecked_mut;
use crate::unicode::printable::is_printable;
use crate::unicode::{self, conversions, ASCII_CASE_MASK};
use crate::unicode::{self, conversions};
use super::*;
@ -1090,7 +1090,11 @@ impl char {
#[stable(feature = "ascii_methods_on_intrinsics", since = "1.23.0")]
#[inline]
pub fn to_ascii_uppercase(&self) -> char {
if self.is_ascii_lowercase() { ((*self as u8) & !ASCII_CASE_MASK) as char } else { *self }
if self.is_ascii_lowercase() {
(*self as u8).ascii_change_case_unchecked() as char
} else {
*self
}
}
/// Makes a copy of the value in its ASCII lower case equivalent.
@ -1118,7 +1122,11 @@ impl char {
#[stable(feature = "ascii_methods_on_intrinsics", since = "1.23.0")]
#[inline]
pub fn to_ascii_lowercase(&self) -> char {
if self.is_ascii_uppercase() { ((*self as u8) | ASCII_CASE_MASK) as char } else { *self }
if self.is_ascii_uppercase() {
(*self as u8).ascii_change_case_unchecked() as char
} else {
*self
}
}
/// Checks that two values are an ASCII case-insensitive match.