chore: tiny optimization. (envoyproxy#41)

arminabf · Oct 16, 2022 · fe41dea · fe41dea
1 parent d89933f
commit fe41dea
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/internal/ahocorasick/ahocorasick.go b/internal/ahocorasick/ahocorasick.go
@@ -43,11 +43,11 @@ func (ac Matcher) Matches(value string, n int) []string {
 	matchOffs := make([]uint32, 2*n)
 	matchOffsPtr := unsafe.Pointer(&matchOffs[0])
 	numMatches := matches(ac.ptr, unsafe.Pointer(sh.Data), uint32(sh.Len), uint32(n), matchOffsPtr)
-	var matches []string
+	var matches = make([]string, numMatches)
 	for i := 0; i < int(numMatches); i++ {
 		start := matchOffs[2*i]
 		end := matchOffs[2*i+1]
-		matches = append(matches, value[start:end])
+		matches[i] = value[start:end]
 	}
 	return matches
 }