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Don't panic in ceil_char_boundary

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This commit is contained in:
ltdk 2023-06-07 10:48:28 -04:00
parent e94bda3bf1
commit 43453a8ebf
1 changed files with 3 additions and 4 deletions
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7
library/core/src/str/mod.rs
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@ -271,14 +271,13 @@ impl str {
/// Finds the closest `x` not below `index` where `is_char_boundary(x)` is `true`.
///
/// If `x` is greater than the length of the string, this returns the length of the string.
///
/// This method is the natural complement to [`floor_char_boundary`]. See that method
/// for more details.
///
/// [`floor_char_boundary`]: str::floor_char_boundary
///
/// # Panics
///
/// Panics if `index > self.len()`.
///
/// # Examples
///
@ -296,7 +295,7 @@ impl str {
#[inline]
pub fn ceil_char_boundary(&self, index: usize) -> usize {
if index > self.len() {
slice_error_fail(self, index, index)
self.len()
} else {
let upper_bound = Ord::min(index + 4, self.len());
self.as_bytes()[index..upper_bound]