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Use new SIMD function for non blank checking

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Kovid Goyal
2026-03-12 13:50:35 +05:30
parent 7b9b8834a8
commit 0614f05335
1 changed files with 6 additions and 14 deletions
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20
kittens/diff/patch.go
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@@ -453,24 +453,16 @@ func (self *Patch) compute_centers(left_lines, right_lines []string) error {
return nil return nil
} }
// Use SIMD to efficiently find non-blank lines: a line is non-blank if it
// contains at least one character that is not a space or tab.
func is_non_blank(text string) bool {
return simdstring.NotIndexByte2String(text, ' ', '\t') >= 0
}
func (self *Patch) detect_moved_lines(left_lines, right_lines []string) { func (self *Patch) detect_moved_lines(left_lines, right_lines []string) {
// Build maps from line text to lists of line numbers for removed and added lines. // Build maps from line text to lists of line numbers for removed and added lines.
removed := make(map[string][]int) // text -> left line numbers removed := make(map[string][]int) // text -> left line numbers
added := make(map[string][]int) // text -> right line numbers added := make(map[string][]int) // text -> right line numbers
// Use SIMD to efficiently find non-blank lines: a line is non-blank if it
// contains at least one character that is not a space or tab.
is_non_blank := func(text string) bool {
for len(text) > 0 {
idx := simdstring.IndexByte2String(text, ' ', '\t')
if idx != 0 {
// idx < 0: no space/tab found, remaining chars are non-blank;
// idx > 0: non-blank chars exist before the first space/tab.
return true
}
text = text[1:]
}
return false
}
for _, hunk := range self.all_hunks { for _, hunk := range self.all_hunks {
for _, chunk := range hunk.chunks { for _, chunk := range hunk.chunks {
if !chunk.is_context { if !chunk.is_context {