Repository Analysis

Cysharp/UniTask

Provides an efficient allocation free async/await integration for Unity.

2.8 Likely human-written View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of Cysharp/UniTask, a C# project with 11,038 GitHub stars. SynthScan v2.0 examined 84,976 lines of code across 235 source files, recording 85 pattern matches distributed across 2 syntactic categories. The overall adjusted score of 2.8 places this repository in the Likely human-written band.

The scanner applied 160+ deterministic lexical heuristics, multi-line block detectors, abstract syntax tree depth profilers, and a cross-file Jaccard similarity matrix to construct a statistically normalised synthetic code estimate. All matches are individually weighted by severity coefficient and contextual multiplier before summation, and the resulting headline score is temporally discounted to account for the repository's development history relative to the commercial emergence of large language model coding tooling (November 2022 onward).

2.8
Adjusted Score
2.8
Raw Score
100%
Time Factor
2026-07-08
Last Push
11.0K
Stars
C#
Language
85.0K
Lines of Code
235
Files
85
Pattern Hits
2026-07-14
Scan Date
0.06
HC Hit Rate

What These Metrics Mean

Adjusted Score
Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score
The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor
The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits
Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate
High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files
Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

Longitudinal tracking requires multiple scan runs. Once this repository is re-scanned after new commits land, this chart will visualise how the synthetic code signal evolves over time — enabling you to detect whether AI authorship is growing, stabilising, or being actively corrected by human engineers.

No multi-scan history yet — run the scanner again to build trend data.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 13HIGH 0MEDIUM 0LOW 72

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 85 distinct pattern matches across 2 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Hallucination Indicators13 hits · 165 pts
SeverityFileLineSnippetContext
CRITICAL…iTask/Assets/Plugins/UniTask/Runtime/IUniTaskSource.cs39 System.Threading.Tasks.Sources.ValueTaskSourceStatus System.Threading.Tasks.Sources.IValueTaskSource.GetStatus(sCODE
CRITICAL…iTask/Assets/Plugins/UniTask/Runtime/IUniTaskSource.cs44 void System.Threading.Tasks.Sources.IValueTaskSource.GetResult(short token)CODE
CRITICAL…iTask/Assets/Plugins/UniTask/Runtime/IUniTaskSource.cs49 void System.Threading.Tasks.Sources.IValueTaskSource.OnCompleted(Action<object> continuation, object state, shorCODE
CRITICAL…UniTask/Assets/Plugins/UniTask/Runtime/Linq/ToArray.cs14 return Cysharp.Threading.Tasks.Linq.ToArray.ToArrayAsync(source, cancellationToken);CODE
CRITICAL…iTask/Assets/Plugins/UniTask/Runtime/Linq/ToHashSet.cs13 return Cysharp.Threading.Tasks.Linq.ToHashSet.ToHashSetAsync(source, EqualityComparer<TSource>.Default, cancCODE
CRITICAL…iTask/Assets/Plugins/UniTask/Runtime/Linq/ToHashSet.cs21 return Cysharp.Threading.Tasks.Linq.ToHashSet.ToHashSetAsync(source, comparer, cancellationToken);CODE
CRITICAL…/UniTask/Assets/Plugins/UniTask/Runtime/Linq/ToList.cs13 return Cysharp.Threading.Tasks.Linq.ToList.ToListAsync(source, cancellationToken);CODE
CRITICAL…UniTask/Assets/Plugins/UniTask/Runtime/Linq/ForEach.cs14 return Cysharp.Threading.Tasks.Linq.ForEach.ForEachAsync(source, action, cancellationToken);CODE
CRITICAL…UniTask/Assets/Plugins/UniTask/Runtime/Linq/ForEach.cs22 return Cysharp.Threading.Tasks.Linq.ForEach.ForEachAsync(source, action, cancellationToken);CODE
CRITICAL…UniTask/Assets/Plugins/UniTask/Runtime/Linq/ForEach.cs46 return Cysharp.Threading.Tasks.Linq.ForEach.ForEachAwaitAsync(source, action, cancellationToken);CODE
CRITICAL…UniTask/Assets/Plugins/UniTask/Runtime/Linq/ForEach.cs54 return Cysharp.Threading.Tasks.Linq.ForEach.ForEachAwaitAsync(source, action, cancellationToken);CODE
CRITICAL…UniTask/Assets/Plugins/UniTask/Runtime/Linq/ForEach.cs62 return Cysharp.Threading.Tasks.Linq.ForEach.ForEachAwaitWithCancellationAsync(source, action, cancellationToCODE
CRITICAL…UniTask/Assets/Plugins/UniTask/Runtime/Linq/ForEach.cs70 return Cysharp.Threading.Tasks.Linq.ForEach.ForEachAwaitWithCancellationAsync(source, action, cancellationToCODE
Over-Commented Block72 hits · 70 pts
SeverityFileLineSnippetContext
LOWsrc/UniTask.NetCore/NetCore/UniTask.Delay.cs1//using Cysharp.Threading.Tasks.Internal;COMMENT
LOWsrc/UniTask.NetCore/NetCore/UniTask.Delay.cs21// }COMMENT
LOW…c/UniTask.NetCore/NetCore/AsyncEnumerableExtensions.cs101#endifCOMMENT
LOWsrc/UniTask.NetCoreTests/AsyncReactivePropertyTest.cs61 // var f = await rp.FirstAsync();COMMENT
LOWsrc/UniTask/Assets/Scenes/SandboxMain.cs321 // //await r;COMMENT
LOWsrc/UniTask/Assets/Scenes/SandboxMain.cs621COMMENT
LOWsrc/UniTask/Assets/Scenes/SandboxMain.cs641 //RunCheck(PlayerLoopTiming.EarlyUpdate).Forget();COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs1//using Cysharp.Threading.Tasks;COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs21// // var client = new NetworkClient("http://localhost", TimeSpan.FromSeconds(10),COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs41// return await next(context, cancellationToken);COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs61// // if (result == DialogResult.Ok) { }...COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs81// {COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs101COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs121// }COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs141// elseCOMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs161// // return response;COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs181// // UnityEngine.Debug.Log($"Request NetworkError: {context.Path} Code:{webex.ResponseCode} MessaCOMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs201// var respsonse = await next(context, cancellationToken);COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs221// }COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs241// bool running;COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs261// async UniTaskVoid Run()COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs281// {COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs301// {COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs321// }COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs341// readonly byte[] bytes;COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs361COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs381COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs401// this.timeout = timeout;COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs421// async UniTask<ResponseContext> IAsyncDecorator.SendAsync(RequestContext context, CancellationToken cancellatioCOMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs441// // Timeout処理はCancellationTokenSourceのCancelAfterSlim(UniTask拡張)を使ってサクッと処理COMMENT
LOWsrc/UniTask/Assets/Scenes/MiddlewareSample.cs461// {COMMENT
LOWsrc/UniTask/Assets/Plugins/UniTask/Runtime/Linq/Do.cs41 return source.Do(observer.OnNext, observer.OnError, observer.OnCompleted); // alloc delegate.COMMENT
LOWsrc/UniTask/Assets/Plugins/UniTask/Runtime/Linq/Do.cs61 //public static IUniTaskAsyncEnumerable<TSource> DoAwait<TSource>(this IUniTaskAsyncEnumerable<TSource> source, COMMENT
LOWsrc/UniTask/Assets/Tests/CoroutineToUniTaskTest.cs61 //{COMMENT
LOWsrc/UniTask/Assets/Tests/CoroutineToUniTaskTest.cs81 //{COMMENT
LOWsrc/UniTask/Assets/Tests/RunTest.cs41#if !UNITY_WSACOMMENT
LOWsrc/UniTask/Assets/Tests/RunTest.cs61 main.Should().Be(Thread.CurrentThread.ManagedThreadId);COMMENT
LOWsrc/UniTask/Assets/Tests/GenericsWhenAllAny.cs81 await UniTask.WhenAll(t01, t02, t03, t04);COMMENT
LOWsrc/UniTask/Assets/Tests/GenericsWhenAllAny.cs101 // var t01 = Tes<MyGenerics<int>>();COMMENT
LOWsrc/UniTask/Assets/Tests/GenericsWhenAllAny.cs121COMMENT
LOWsrc/UniTask/Assets/Tests/AsyncTest.cs261 //{COMMENT
LOWsrc/UniTask/Assets/Tests/AsyncTest.cs281COMMENT
LOWsrc/UniTask/Assets/Tests/AsyncTest.cs341 yield return null;COMMENT
LOWsrc/UniTask/Assets/Tests/AsyncTest.cs401COMMENT
LOWsrc/UniTask/Assets/Tests/Editor/WhenAnyTestEditor.cs1//#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))COMMENT
LOWsrc/UniTask/Assets/Tests/Editor/WhenAnyTestEditor.cs21// public class WhenAnyTestCOMMENT
LOWsrc/UniTask/Assets/Tests/Editor/WhenAnyTestEditor.cs41//}COMMENT
LOWsrc/UniTask/Assets/Tests/Editor/RunTestEditor.cs1//#if !(UNITY_4_5 || UNITY_4_6 || UNITY_4_7 || UNITY_5_0 || UNITY_5_1 || UNITY_5_2)COMMENT
LOWsrc/UniTask/Assets/Tests/Editor/RunTestEditor.cs21//#elseCOMMENT
LOWsrc/UniTask/Assets/Tests/Editor/RunTestEditor.cs41// //[UnityTest]COMMENT
LOWsrc/UniTask/Assets/Tests/Editor/RunTestEditor.cs61// //[UnityTest]COMMENT
LOWsrc/UniTask/Assets/Tests/Editor/RunTestEditor.cs81// await UniTask.Run<int>(() => throw new Exception(), true);COMMENT
LOWsrc/UniTask/Assets/Tests/Editor/AsyncTestEditor.cs1//#if !(UNITY_4_5 || UNITY_4_6 || UNITY_4_7 || UNITY_5_0 || UNITY_5_1 || UNITY_5_2)COMMENT
LOWsrc/UniTask/Assets/Tests/Editor/AsyncTestEditor.cs21//#elseCOMMENT
LOWsrc/UniTask/Assets/Tests/Editor/AsyncTestEditor.cs41// public struct MyJob : IJobCOMMENT
LOWsrc/UniTask/Assets/Tests/Editor/AsyncTestEditor.cs61// await UniTask.Yield(PlayerLoopTiming.PostLateUpdate);COMMENT
LOWsrc/UniTask/Assets/Tests/Editor/AsyncTestEditor.cs81// {COMMENT
LOWsrc/UniTask/Assets/Tests/Editor/AsyncTestEditor.cs101// var a = UniTask.FromResult(999);COMMENT
LOWsrc/UniTask/Assets/Tests/Editor/AsyncTestEditor.cs121// });COMMENT
LOWsrc/UniTask/Assets/Tests/Editor/AsyncTestEditor.cs141// public int MyProperty { get; set; }COMMENT
12 more matches not shown…