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Make a PreparedScriptBenchmark class closer to the original #2325

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Merged
lahma merged 2 commits into from
Mar 18, 2026
Merged

Make a PreparedScriptBenchmark class closer to the original #2325

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ea21f56
Make a `PreparedScriptBenchmark` class closer to the original
Taritsyn Mar 12, 2026
1a52bf3
Merge branch 'main' into improve-prepared-script-benchmark
lahma Mar 18, 2026
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32 changes: 22 additions & 10 deletions Jint.Benchmark/PreparedScriptBenchmark.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,6 @@ namespace Jint.Benchmark;
public class PreparedScriptBenchmark
{
private string _libraryCode = null!;
private Prepared<Script> _preparedLibrary;
private ContentItem[] _contentItems = null!;

[GlobalSetup]
Expand All @@ -21,7 +20,6 @@ public void Setup()
var handlebars = File.ReadAllText("Scripts/template-rendering/lib/handlebars.js");
var helpers = File.ReadAllText("Scripts/template-rendering/lib/helpers.js");
_libraryCode = handlebars + "\n" + helpers;
_preparedLibrary = Engine.PrepareScript(_libraryCode);

var contentDir = "Scripts/template-rendering/content";
string[] names = ["hello-world", "contacts", "js-engines", "web-browser-family-tree"];
Expand All @@ -34,21 +32,35 @@ public void Setup()
[Benchmark(Baseline = true)]
public void ExecuteStringOnMultipleEngines()
{
RenderTemplates(withPrecompilation: false);
RenderTemplates(prepareScript: false, compileRegex: false);
}

[Benchmark]
public void ExecutePreparedOnMultipleEngines()
public void ExecutePreparedWithoutRegexCompilationOnMultipleEngines()
{
RenderTemplates(withPrecompilation: true);
RenderTemplates(prepareScript: true, compileRegex: false);
}

private void RenderTemplates(bool withPrecompilation)
[Benchmark]
public void ExecutePreparedWithRegexCompilationOnMultipleEngines()
{
RenderTemplates(prepareScript: true, compileRegex: true);
}

private void RenderTemplates(bool prepareScript, bool compileRegex)
{
// First engine: load library and render first item
Prepared<Script> preparedLibrary = default;
var engine = new Engine();
if (withPrecompilation)
engine.Execute(_preparedLibrary);
if (prepareScript)
{
var preparationOptions = new ScriptPreparationOptions
{
ParsingOptions = new ScriptParsingOptions { CompileRegex = compileRegex }
};
preparedLibrary = Engine.PrepareScript(_libraryCode, options: preparationOptions);
engine.Execute(preparedLibrary);
}
else
engine.Execute(_libraryCode);

Expand All @@ -58,8 +70,8 @@ private void RenderTemplates(bool withPrecompilation)
for (int i = 1; i < _contentItems.Length; i++)
{
engine = new Engine();
if (withPrecompilation)
engine.Execute(_preparedLibrary);
if (prepareScript)
engine.Execute(preparedLibrary);
else
engine.Execute(_libraryCode);

Expand Down