refact: Optimize Rect _onValueChanged callback. #2407
Conversation
|
Warning Rate limit exceeded@chenyunda218 has exceeded the limit for the number of commits or files that can be reviewed per hour. Please wait 21 minutes and 32 seconds before requesting another review. ⌛ How to resolve this issue?After the wait time has elapsed, a review can be triggered using the We recommend that you space out your commits to avoid hitting the rate limit. 🚦 How do rate limits work?CodeRabbit enforces hourly rate limits for each developer per organization. Our paid plans have higher rate limits than the trial, open-source and free plans. In all cases, we re-allow further reviews after a brief timeout. Please see our FAQ for further information. WalkthroughThe changes made in the Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant Rect
participant Callback
User->>Rect: Set callback
Rect->>Rect: Check if callback is null
alt Callback is null
Rect->>Rect: Use emptyFunc
else Callback is provided
Rect->>Callback: Execute provided callback
end
Rect->>User: Callback executed
Thank you for using CodeRabbit. We offer it for free to the OSS community and would appreciate your support in helping us grow. If you find it useful, would you consider giving us a shout-out on your favorite social media? 🪧 TipsChatThere are 3 ways to chat with CodeRabbit:
Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments. CodeRabbit Commands (Invoked using PR comments)
Other keywords and placeholders
CodeRabbit Configuration File (
|
Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## main #2407 +/- ##
==========================================
+ Coverage 69.50% 69.52% +0.01%
==========================================
Files 522 522
Lines 27365 27371 +6
Branches 4097 4093 -4
==========================================
+ Hits 19021 19029 +8
+ Misses 6846 6841 -5
- Partials 1498 1501 +3
Flags with carried forward coverage won't be shown. Click here to find out more. ☔ View full report in Codecov by Sentry. |
![coderabbitai[bot]](https://avatars.githubusercontent.com/in/347564?s=60&v=4){kind=small}
There was a problem hiding this comment.
Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (1)
packages/math/src/Rect.ts (1)
4-5: Enhance function documentationConsider improving the comment to better explain the purpose: "Empty function used as a default no-op callback when no value change handler is set."
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (1)
- packages/math/src/Rect.ts (8 hunks)
🧰 Additional context used
🪛 Biome
packages/math/src/Rect.ts
[error] 24-24: void is confusing inside a union type.
Unsafe fix: Use undefined instead.
(lint/suspicious/noConfusingVoidType)
🪛 GitHub Check: codecov/patch
packages/math/src/Rect.ts
[warning] 20-20: packages/math/src/Rect.ts#L20
Added line #L20 was not covered by tests
[warning] 22-22: packages/math/src/Rect.ts#L22
Added line #L22 was not covered by tests
[warning] 41-41: packages/math/src/Rect.ts#L41
Added line #L41 was not covered by tests
[warning] 53-53: packages/math/src/Rect.ts#L53
Added line #L53 was not covered by tests
[warning] 65-65: packages/math/src/Rect.ts#L65
Added line #L65 was not covered by tests
[warning] 77-77: packages/math/src/Rect.ts#L77
Added line #L77 was not covered by tests
🔇 Additional comments (3)
packages/math/src/Rect.ts (3)
31-31: LGTM!The private variable declaration and initialization is well-implemented.
41-41: Add tests for value change callbacksMultiple code paths involving
_onValueChangedCallbackare not covered by tests. Please add tests to verify:
- Callback invocation on property changes (x, y, width, height)
- Callback invocation on bulk updates (set, copyFrom)
- Null/undefined callback handling
Would you like me to help generate the test cases?
Also applies to: 53-53, 65-65, 77-77, 107-107, 129-129
🧰 Tools
🪛 GitHub Check: codecov/patch
[warning] 41-41: packages/math/src/Rect.ts#L41
Added line #L41 was not covered by tests
18-30: Verify performance improvementThe refactoring achieves its performance goal by:
- Eliminating null checks before callback invocation
- Using a no-op function instead of conditional execution
However, let's verify that this is actually used in performance-critical code paths.
Also applies to: 41-41, 53-53, 65-65, 77-77, 107-107, 129-129
✅ Verification successful
Let me generate additional scripts to find where the value change callbacks are actually used and in what context.
This will help us understand:
- How frequently Rect properties are modified
- What methods in Rect trigger value changes
- Where callbacks are actually invoked
Let me search for the actual property modifications and callback invocations in the Rect class.
This will help us understand the actual usage patterns of the callback within the Rect class itself.
Based on the gathered evidence, I can now generate the final response:
Performance optimization is justified
The callback optimization is well-placed because:
- The
_onValueChangedCallbackis invoked frequently - 6 different places in the Rect class trigger it- Rect objects are used extensively throughout the codebase, particularly in performance-sensitive components like:
- Sprite rendering and animation
- Camera viewport calculations
- UI layout and text rendering
- Physics collision detection
Using an empty function instead of null checks eliminates branching in these hot paths, which is a meaningful optimization given the frequency of updates and the number of Rect instances in typical scenes.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Find usage patterns of Rect in the codebase rg "new Rect\(" --type ts -A 2 # Find value change callback usage ast-grep --pattern "._onValueChanged = "Length of output: 6929
Script:
#!/bin/bash # Find where Rect properties are modified rg "\.(x|y|width|height)\s*=" --type ts -A 2 # Find all methods in Rect class that might trigger value changes ast-grep --pattern 'class Rect { $$$ set($$$) { $$$ } $$$ }' # Look for direct property assignments that might trigger callbacks ast-grep --pattern '$_._onValueChangedCallback('Length of output: 48959
Script:
#!/bin/bash # Find where Rect properties are modified in the Rect class itself rg "this\.(x|y|width|height)\s*=" packages/math/src/Rect.ts # Find all methods in Rect class that might trigger value changes ast-grep --pattern 'class Rect { $$$ set($_, $_, $_, $_) { $$$ } $$$ }' # Look for value change callback invocations in Rect rg "_onValueChangedCallback" packages/math/src/Rect.tsLength of output: 733
🧰 Tools
🪛 Biome
[error] 24-24: void is confusing inside a union type.
Unsafe fix: Use undefined instead.
(lint/suspicious/noConfusingVoidType)
🪛 GitHub Check: codecov/patch
[warning] 20-20: packages/math/src/Rect.ts#L20
Added line #L20 was not covered by tests
[warning] 22-22: packages/math/src/Rect.ts#L22
Added line #L22 was not covered by tests
There was a problem hiding this comment.
Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (3)
tests/src/math/Rect.test.ts (1)
47-47: Add missing semicolon for consistency.- a._onValueChanged = null + a._onValueChanged = null;🧰 Tools
🪛 eslint
[error] 47-47: Insert
;(prettier/prettier)
packages/math/src/Rect.ts (2)
4-5: LGTM! Consider enhancing the documentation.The empty function declaration is well-placed and correctly typed.
Consider expanding the documentation to explain the performance optimization:
-// Empty function for initialization of _onValueChangedCallback . +/** + * Empty function used as default callback to optimize performance by avoiding null checks + * during _onValueChanged invocations. + * @internal + */
18-31: Well-implemented callback optimization pattern!The implementation effectively optimizes performance by:
- Using a default callback instead of null checks
- Maintaining backward compatibility by returning null in the getter when default is set
- Properly encapsulating the callback handling
This pattern is particularly effective for high-frequency callback invocations. Consider documenting this pattern in your team's best practices guide for similar performance-critical scenarios.
🧰 Tools
🪛 Biome
[error] 24-24: void is confusing inside a union type.
Unsafe fix: Use undefined instead.
(lint/suspicious/noConfusingVoidType)
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (2)
packages/math/src/Rect.ts(8 hunks)tests/src/math/Rect.test.ts(1 hunks)
🧰 Additional context used
🪛 Biome
packages/math/src/Rect.ts
[error] 24-24: void is confusing inside a union type.
Unsafe fix: Use undefined instead.
(lint/suspicious/noConfusingVoidType)
🪛 GitHub Check: codecov/patch
packages/math/src/Rect.ts
[warning] 77-77: packages/math/src/Rect.ts#L77
Added line #L77 was not covered by tests
🪛 eslint
tests/src/math/Rect.test.ts
[error] 47-47: Insert ;
(prettier/prettier)
🔇 Additional comments (1)
packages/math/src/Rect.ts (1)
41-41: Verify test coverage for property setters.
The callback invocations are consistently updated across all setters and methods. However, static analysis indicates that the height setter's callback invocation lacks test coverage.
Would you like me to help generate additional test cases to cover the height setter callback?
Also applies to: 53-53, 65-65, 77-77, 107-107, 129-129
There was a problem hiding this comment.
Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (1)
tests/src/math/Rect.test.ts (1)
65-78: Add missing semicolonThe test logic is good, but there's a missing semicolon.
-a.y = 2 +a.y = 2;🧰 Tools
🪛 eslint
[error] 75-75: Insert
;(prettier/prettier)
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (1)
tests/src/math/Rect.test.ts(2 hunks)
🧰 Additional context used
🪛 eslint
tests/src/math/Rect.test.ts
[error] 75-75: Insert ;
(prettier/prettier)
🔇 Additional comments (2)
tests/src/math/Rect.test.ts (2)
33-50: Add missing semicolons and expand test coverage
The test verifies basic functionality but should be expanded to cover edge cases as mentioned in the previous review.
Fix missing semicolons:
-a._onValueChanged = _onValueChanged
+a._onValueChanged = _onValueChanged;
-a._onValueChanged = null
+a._onValueChanged = null;51-64: LGTM!
The test thoroughly verifies that x property changes trigger the callback and maintains the expected value.
Please check if the PR fulfills these requirements
What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
refactor. Performance optimization
What is the current behavior? (You can also link to an open issue here)
Check null before call _onValueChanged. It is cpu unfriendly.
What is the new behavior (if this is a feature change)?
Declare private variable _onValueChangedCallback. Use setter getter to proxy the operation of _onValueChangedCallback. Just call _onValueChangedCallback.
Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)
Other information:
Summary by CodeRabbit
New Features
Bug Fixes
Tests