bjoernager/rust
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Giles Cope 2021-03-08 22:35:37 +00:00
parent 6a58b6af32
commit 05330aaf42
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GPG key ID: DF85161DAE0FF36B
1 changed files with 16 additions and 26 deletions
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42
library/alloc/src/string.rs
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@ -2228,18 +2228,18 @@ impl ToString for char {
impl ToString for u8 {
#[inline]
fn to_string(&self) -> String {
let mut result = String::with_capacity(3);
let mut buf = String::with_capacity(3);
let mut n = *self;
if n >= 100 {
result.push((b'0' + n / 100) as char);
n %= 100;
}
if !result.is_empty() || n >= 10 {
result.push((b'0' + n / 10) as char);
if n >= 10 {
if n >= 100 {
buf.push((b'0' + n / 100) as char);
n %= 100;
}
buf.push((b'0' + n / 10) as char);
n %= 10;
};
result.push((b'0' + n) as char);
result
}
buf.push((b'0' + n) as char);
buf
}
}
@ -2247,31 +2247,21 @@ impl ToString for u8 {
impl ToString for i8 {
#[inline]
fn to_string(&self) -> String {
let mut vec = vec![0; 4];
let mut free = 0;
let mut buf = String::with_capacity(4);
if self.is_negative() {
vec[free] = b'-';
free += 1;
buf.push('-');
}
let mut n = self.unsigned_abs();
if n >= 10 {
if n >= 100 {
buf.push('1');
n -= 100;
vec[free] = b'1';
free += 1;
}
debug_assert!(n < 100);
vec[free] = b'0' + n / 10;
free += 1;
buf.push((b'0' + n / 10) as char);
n %= 10;
}
debug_assert!(n < 10);
vec[free] = b'0' + n;
free += 1;
vec.truncate(free);
// SAFETY: Vec only contains ascii so valid utf8
unsafe { String::from_utf8_unchecked(vec) }
buf.push((b'0' + n) as char);
buf
}
}