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@VictoriousRaptor VictoriousRaptor commented Jul 13, 2025

  • Improve Chinese character detection speed 1x by using our own function. The 3rd party one uses regex and it's slow.
  • Some renames.
  • More detailed exception handling.

@VictoriousRaptor VictoriousRaptor requested a review from Copilot July 13, 2025 15:38
@VictoriousRaptor VictoriousRaptor self-assigned this Jul 13, 2025
@VictoriousRaptor VictoriousRaptor added Dev branch only An issue or fix for the Dev branch build Code Refactor labels Jul 13, 2025
@coderabbitai coderabbitai bot added the enhancement New feature or request label Jul 13, 2025
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Pull Request Overview

This PR optimizes Pinyin translation by replacing regex-based Chinese detection with custom span-based checks, refactors naming for clarity, and adds more granular exception handling when loading the double-pinyin table.

  • Replace WordsHelper.HasChinese with ContainsChinese/IsChineseCharacter for faster detection.
  • Rename fields/methods (constructed_isConstructed, endConstructEndConstruct, ToDoublePinToDoublePinyin) and adopt target-typed new.
  • Enhance LoadDoublePinyinTable to catch specific I/O exceptions and validate deserialization.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File Description
TranslationMapping.cs Renamed construction flag and collection, standardized method names and exception messages
PinyinAlphabet.cs Introduced ContainsChinese/IsChineseCharacter, pre-allocate StringBuilder, detailed catch blocks, renamed helper methods
Comments suppressed due to low confidence (3)

Flow.Launcher.Infrastructure/PinyinAlphabet.cs:156

  • The doc comment claims comprehensive coverage but IsChineseCharacter only checks Unified Ideographs and Extension A; update the comment or extend the method to include additional CJK ranges if needed.
        /// Optimized Chinese character detection using the comprehensive CJK Unicode ranges

Flow.Launcher.Infrastructure/TranslationMapping.cs:29

  • [nitpick] The method name EndConstruct is a bit opaque; consider renaming to CompleteConstruction or FinalizeMapping to clearly convey its purpose.
        public void EndConstruct()

Flow.Launcher.Infrastructure/PinyinAlphabet.cs:158

  • Add unit tests for ContainsChinese and IsChineseCharacter (including edge cases) as well as for the table-loading paths (missing file, invalid JSON, missing schema) to ensure proper behavior across scenarios.
        private static bool ContainsChinese(ReadOnlySpan<char> text)

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coderabbitai bot commented Jul 13, 2025

📝 Walkthrough

Walkthrough

The changes update error handling, internal logic, and naming conventions in the PinyinAlphabet and TranslationMapping classes. Improvements include more granular exception handling, optimized Chinese character detection, clarified string building, and consistent naming conventions for private fields and methods.

Changes

File(s) Change Summary
Flow.Launcher.Infrastructure/PinyinAlphabet.cs Made _pinyinCache readonly and initialized inline; enhanced error handling with specific exceptions and improved messages; replaced external Chinese detection with internal Unicode range checks; optimized string building; corrected method calls and reordered methods.
Flow.Launcher.Infrastructure/TranslationMapping.cs Renamed private fields with underscore prefixes; renamed endConstruct to EndConstruct; updated exception messages and local variable names for clarity and consistency.
Flow.Launcher.Test/TranslationMappingTest.cs Updated helper methods to static; accessed renamed private field _originalToTranslated via reflection; simplified type casting; added using directives.
.github/actions/spelling/expect.txt Added "CJK" to accepted words list for spelling checks.

Suggested labels

bug

Suggested reviewers

  • jjw24

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Reviewing files that changed from the base of the PR and between efcce81 and bdf5ccd.

📒 Files selected for processing (4)
  • .github/actions/spelling/expect.txt (1 hunks)
  • Flow.Launcher.Infrastructure/PinyinAlphabet.cs (2 hunks)
  • Flow.Launcher.Infrastructure/TranslationMapping.cs (1 hunks)
  • Flow.Launcher.Test/TranslationMappingTest.cs (2 hunks)
✅ Files skipped from review due to trivial changes (1)
  • .github/actions/spelling/expect.txt
🚧 Files skipped from review as they are similar to previous changes (2)
  • Flow.Launcher.Infrastructure/TranslationMapping.cs
  • Flow.Launcher.Infrastructure/PinyinAlphabet.cs
🧰 Additional context used
🧠 Learnings (1)
Flow.Launcher.Test/TranslationMappingTest.cs (10)
Learnt from: taooceros
PR: Flow-Launcher/Flow.Launcher#2616
File: Flow.Launcher/Flow.Launcher.csproj:7-7
Timestamp: 2024-10-08T15:52:58.573Z
Learning: In the Flow Launcher project, the version number in the `Flow.Launcher.csproj` file is dynamically updated during the CI/CD process.
Learnt from: Jack251970
PR: Flow-Launcher/Flow.Launcher#3561
File: Flow.Launcher/ViewModel/SelectBrowserViewModel.cs:53-58
Timestamp: 2025-05-21T10:37:07.696Z
Learning: When implementing collection item removal operations in Flow Launcher, always handle index boundaries carefully. After removing an item from a collection, ensure the updated index remains within valid bounds (>= 0 and < collection.Count) to prevent IndexOutOfRangeExceptions, especially when decrementing indexes.
Learnt from: Jack251970
PR: Flow-Launcher/Flow.Launcher#3672
File: Flow.Launcher/MainWindow.xaml.cs:244-247
Timestamp: 2025-06-08T14:12:21.348Z
Learning: In Flow.Launcher, App.NotifyIcon is created before MainWindow creation, so null checks for App.NotifyIcon are not necessary when accessing it from MainWindow code.
Learnt from: Jack251970
PR: Flow-Launcher/Flow.Launcher#3572
File: Flow.Launcher/App.xaml.cs:214-216
Timestamp: 2025-07-06T12:21:37.947Z
Learning: In Flow Launcher, the UpdatePluginManifestAsync method in PluginsManifest.cs already has comprehensive internal try-catch handling that logs exceptions and returns false on failure rather than throwing, making external try-catch wrappers unnecessary.
Learnt from: Jack251970
PR: Flow-Launcher/Flow.Launcher#3672
File: Flow.Launcher/MainWindow.xaml.cs:318-318
Timestamp: 2025-06-08T14:12:12.842Z
Learning: In Flow.Launcher, the App.NotifyIcon static property is initialized in the App class before MainWindow creation, so null checks are not needed when accessing App.NotifyIcon in MainWindow lifecycle methods.
Learnt from: jjw24
PR: Flow-Launcher/Flow.Launcher#2448
File: Plugins/Flow.Launcher.Plugin.Sys/ThemeSelector.cs:16-20
Timestamp: 2025-01-18T10:10:18.414Z
Learning: In Flow Launcher's plugin system, the PluginInitContext parameter passed to plugin constructors is guaranteed to be non-null by the plugin initialization system, making null checks unnecessary.
Learnt from: Jack251970
PR: Flow-Launcher/Flow.Launcher#3791
File: Flow.Launcher.Core/Plugin/PluginManager.cs:293-295
Timestamp: 2025-07-01T05:46:13.251Z
Learning: In Flow.Launcher.Core/Plugin/PluginManager.cs, when checking if a plugin is modified within the PluginManager class itself, prefer using the internal static PluginModified(string id) method directly rather than going through API.PluginModified() for better performance and architectural design.
Learnt from: Jack251970
PR: Flow-Launcher/Flow.Launcher#3500
File: Flow.Launcher/Storage/TopMostRecord.cs:145-149
Timestamp: 2025-05-01T05:38:25.673Z
Learning: For the MultipleTopMostRecord implementation in Flow.Launcher, sequence order of records in the ConcurrentBag does not need to be preserved, as confirmed by the developer. The unordered nature of ConcurrentBag is acceptable for this implementation.
Learnt from: Yusyuriv
PR: Flow-Launcher/Flow.Launcher#3057
File: Flow.Launcher.Core/Plugin/JsonRPCPluginSettings.cs:0-0
Timestamp: 2024-11-03T07:40:11.014Z
Learning: In Flow Launcher, when using Windows Forms dialogs (e.g., in `JsonRPCPluginSettings.cs`), path validation is enabled by default in `OpenFileDialog` and `FolderBrowserDialog`, preventing users from selecting invalid paths, but it's possible to opt out of this validation on individual dialogs.
Learnt from: Jack251970
PR: Flow-Launcher/Flow.Launcher#3279
File: Flow.Launcher/Helper/WallpaperPathRetrieval.cs:44-46
Timestamp: 2025-02-28T07:47:24.148Z
Learning: In Flow.Launcher's WallpaperPathRetrieval class, using a `using` statement with MemoryStream when loading images with BitmapImage does not work properly, even when using BitmapCacheOption.OnLoad. The stream needs to remain open while the bitmap is in use.
🧬 Code Graph Analysis (1)
Flow.Launcher.Test/TranslationMappingTest.cs (1)
Flow.Launcher.Infrastructure/TranslationMapping.cs (1)
  • TranslationMapping (6-33)
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (3)
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🔇 Additional comments (3)
Flow.Launcher.Test/TranslationMappingTest.cs (3)

1-2: LGTM: Necessary using statements added.

The added using directives for System.Collections.Generic and System.Reflection are required to support the simplified type casting and reflection operations in the helper methods.


43-43: LGTM: Appropriate conversion to static methods.

Converting the helper methods to static is correct since they don't use any instance state and only perform reflection operations on the provided TranslationMapping parameter.

Also applies to: 50-50


45-46: LGTM: Reflection updated to match renamed private field.

The reflection calls have been correctly updated to access the renamed private field _originalToTranslated (previously originalToTranslated) in the TranslationMapping class. The simplified type casting to List<int> is cleaner with the added using statement.

Also applies to: 52-53

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Actionable comments posted: 0

🧹 Nitpick comments (2)
Flow.Launcher.Infrastructure/PinyinAlphabet.cs (2)

158-176: Excellent performance optimization for Chinese character detection!

The custom Unicode range check should be significantly faster than regex-based detection. The implementation covers the most commonly used Chinese characters.

Note: The current ranges cover CJK Unified Ideographs (U+4E00-U+9FFF) and Extension A (U+3400-U+4DBF). For completeness, you might consider adding:

  • CJK Extension B-G (U+20000-U+2CEAF)
  • CJK Compatibility Ideographs (U+F900-U+FAFF)

However, these are rarely used in practice, so the current implementation should suffice for most use cases.


113-113: Consider adjusting StringBuilder capacity calculation

The pre-allocation of 3-4 characters seems too small for typical use cases. Consider calculating based on content length to avoid multiple resizes:

-var resultBuilder = new StringBuilder(_settings.UseDoublePinyin ? 3 : 4); // Pre-allocate with estimated capacity
+// Estimate: average pinyin length * character count + spaces
+var estimatedCapacity = content.Length * (_settings.UseDoublePinyin ? 2 : 4) + content.Length;
+var resultBuilder = new StringBuilder(estimatedCapacity);
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📒 Files selected for processing (2)
  • Flow.Launcher.Infrastructure/PinyinAlphabet.cs (2 hunks)
  • Flow.Launcher.Infrastructure/TranslationMapping.cs (1 hunks)
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🪛 GitHub Actions: Check Spelling
Flow.Launcher.Infrastructure/TranslationMapping.cs

[error] 1-1: Merge conflict detected. Automatic merge failed; conflicts must be resolved and committed.

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🔇 Additional comments (4)
Flow.Launcher.Infrastructure/TranslationMapping.cs (1)

9-34: Good refactoring to follow C# naming conventions!

The changes improve code consistency:

  • Private fields now use underscore prefix (_isConstructed, _originalToTranslated)
  • Public method renamed to PascalCase (EndConstruct)
  • Clearer variable naming (searchResult instead of loc)
  • Improved error message clarity ("after construction" vs "after constructed")
Flow.Launcher.Infrastructure/PinyinAlphabet.cs (3)

17-17: Good defensive programming improvements!

Making _pinyinCache readonly and adding null check for deserialization result improves code robustness.

Also applies to: 45-48


61-67: Excellent optimization with early return and correct Path API usage!

  • Early return when double pinyin is disabled avoids unnecessary file I/O
  • Path.Combine is the correct choice here as it properly handles directory separators across platforms, unlike Path.Join which simply concatenates

73-87: Great improvement in exception handling granularity!

Catching specific exceptions with tailored log messages will significantly improve debugging and troubleshooting capabilities.

@Jack251970
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@jjw24 Could you please add CJK to recognized word list?

image

@VictoriousRaptor
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@jjw24 Could you please add CJK to recognized word list?

image

Let's do it in this PR.

@Jack251970
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@jjw24 Could you please add CJK to recognized word list?
image

Let's do it in this PR.

Have no idea about how to do that

@VictoriousRaptor
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VictoriousRaptor commented Jul 14, 2025

@jjw24 Could you please add CJK to recognized word list?
image

Let's do it in this PR.

Have no idea about how to do that

bdf5ccd

Add it to the expect list so it won't trigger the alarm again.

@coderabbitai coderabbitai bot added the bug Something isn't working label Jul 14, 2025
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gitstream-cm bot commented Jul 14, 2025

🥷 Code experts: no user but you matched threshold 10

VictoriousRaptor, Jack251970 have most 👩‍💻 activity in the files.
VictoriousRaptor has most 🧠 knowledge in the files.

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@Jack251970 Jack251970 added this to the 2.0.0 milestone Jul 14, 2025
@VictoriousRaptor VictoriousRaptor merged commit 42b2fd1 into dev Jul 14, 2025
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@VictoriousRaptor VictoriousRaptor deleted the double-pin branch July 14, 2025 02:42
@jjw24 jjw24 removed bug Something isn't working enhancement New feature or request Code Refactor 10 min review labels Jul 14, 2025
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