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-rw-r--r--helix-core/src/graphemes.rs9
1 files changed, 9 insertions, 0 deletions
diff --git a/helix-core/src/graphemes.rs b/helix-core/src/graphemes.rs
index f7bf66c0..0465fe51 100644
--- a/helix-core/src/graphemes.rs
+++ b/helix-core/src/graphemes.rs
@@ -71,6 +71,8 @@ pub fn nth_prev_grapheme_boundary(slice: RopeSlice, char_idx: usize, n: usize) -
}
/// Finds the previous grapheme boundary before the given char position.
+#[must_use]
+#[inline(always)]
pub fn prev_grapheme_boundary(slice: RopeSlice, char_idx: usize) -> usize {
nth_prev_grapheme_boundary(slice, char_idx, 1)
}
@@ -117,12 +119,16 @@ pub fn nth_next_grapheme_boundary(slice: RopeSlice, char_idx: usize, n: usize) -
}
/// Finds the next grapheme boundary after the given char position.
+#[must_use]
+#[inline(always)]
pub fn next_grapheme_boundary(slice: RopeSlice, char_idx: usize) -> usize {
nth_next_grapheme_boundary(slice, char_idx, 1)
}
/// Returns the passed char index if it's already a grapheme boundary,
/// or the next grapheme boundary char index if not.
+#[must_use]
+#[inline]
pub fn ensure_grapheme_boundary_next(slice: RopeSlice, char_idx: usize) -> usize {
if char_idx == 0 {
char_idx
@@ -133,6 +139,8 @@ pub fn ensure_grapheme_boundary_next(slice: RopeSlice, char_idx: usize) -> usize
/// Returns the passed char index if it's already a grapheme boundary,
/// or the prev grapheme boundary char index if not.
+#[must_use]
+#[inline]
pub fn ensure_grapheme_boundary_prev(slice: RopeSlice, char_idx: usize) -> usize {
if char_idx == slice.len_chars() {
char_idx
@@ -142,6 +150,7 @@ pub fn ensure_grapheme_boundary_prev(slice: RopeSlice, char_idx: usize) -> usize
}
/// Returns whether the given char position is a grapheme boundary.
+#[must_use]
pub fn is_grapheme_boundary(slice: RopeSlice, char_idx: usize) -> bool {
// Bounds check
debug_assert!(char_idx <= slice.len_chars());