snapshot of https://github.com/go-gitea/gitea.git (main, 2026-09-15; blobs > 131072B omitted)

modules/highlight/benchmark_test.go

@@ -0,0 +1,48 @@
+// Copyright 2026 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package highlight
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/alecthomas/chroma/v2/lexers"
+)
+
+func BenchmarkDetectChromaLexerByFileName(b *testing.B) {
+	for b.Loop() {
+		// BenchmarkDetectChromaLexerByFileName-12    	18214717	        61.35 ns/op
+		DetectChromaLexerByFileName("a.sql", "")
+	}
+}
+
+func BenchmarkDetectChromaLexerWithAnalyze(b *testing.B) {
+	code := []byte(strings.Repeat("SELECT * FROM table;\n", 1000))
+	b.ResetTimer()
+	for b.Loop() {
+		// BenchmarkRenderCodeSlowGuess-12    	   87946	     13310 ns/op
+		detectChromaLexerWithAnalyze("a", "", code)
+	}
+}
+
+func BenchmarkChromaAnalyze(b *testing.B) {
+	code := strings.Repeat("SELECT * FROM table;\n", 1000)
+	b.ResetTimer()
+	for b.Loop() {
+		// comparing to detectChromaLexerWithAnalyze (go-enry), "chroma/lexers.Analyse" is very slow
+		// BenchmarkChromaAnalyze-12    	     519	   2247104 ns/op
+		lexers.Analyse(code)
+	}
+}
+
+func BenchmarkRenderCodeByLexer(b *testing.B) {
+	code := strings.Repeat("SELECT * FROM table;\n", 1000)
+	lexer := DetectChromaLexerByFileName("a.sql", "")
+	b.ResetTimer()
+	for b.Loop() {
+		// HINT: CODE-HIGHLIGHT-PERFORMANCE: Really slow ....... the regexp2 used by Chroma takes most of the time
+		// BenchmarkRenderCodeByLexer-12    	      22	  47159038 ns/op
+		RenderCodeByLexer(lexer, code)
+	}
+}