Fix comma bug #47
Fix comma bug #47
Conversation
Reviewer's GuideClears the after_comma flag when entering a new object value state and adds tests to ensure proper comma handling in empty arrays and before nested containers. Class diagram for new and updated tests in tokenizer moduleclassDiagram
class tests {
+test_empty_array_with_whitespace()
+test_comma_resets_before_containers()
}
class Event {
<<enum>>
Uninitialized
ArrayStart
ArrayEnd
ObjectStart
ObjectEnd
Begin(EventToken)
End(EventToken)
}
class EventToken {
<<enum>>
Key
Number
}
tests --> Event
Event --> EventToken
File-Level Changes
Tips and commandsInteracting with Sourcery
Customizing Your ExperienceAccess your dashboard to:
Getting Help
|
WalkthroughThe JSON tokenizer was updated to reset the Changes
Poem
Warning There were issues while running some tools. Please review the errors and either fix the tool's configuration or disable the tool if it's a critical failure. 🔧 Clippy (1.86.0)warning: unnecessary closure used to substitute value for warning: you seem to be trying to use ... [truncated 3821 characters] ... rust-clippy/master/index.html#doc_lazy_continuation warning: the following explicit lifetimes could be elided: 'a warning: 📜 Recent review detailsConfiguration used: CodeRabbit UI 📒 Files selected for processing (1)
🚧 Files skipped from review as they are similar to previous changes (1)
⏰ 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). (35)
✨ Finishing Touches
Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out. 🪧 TipsChatThere are 3 ways to chat with CodeRabbit:
SupportNeed help? Create a ticket on our support page for assistance with any issues or questions. 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 (
|
![gemini-code-assist[bot]](https://avatars.githubusercontent.com/in/956858?s=60&v=4){kind=small}
There was a problem hiding this comment.
Summary of Changes
Hello @kaidokert, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request resolves a parsing bug in the JSON tokenizer that led to false positive trailing comma errors when handling nested objects or arrays. The core change involves a precise state reset within the tokenizer logic, complemented by new, targeted test cases to confirm the fix and enhance overall parsing reliability.
Highlights
- Bug Fix: Comma Handling in JSON Tokenizer: I've addressed a bug in the JSON tokenizer where nested objects or arrays immediately following a comma within an object were incorrectly flagged as trailing comma errors. The fix involves explicitly resetting the
after_commastate when a colon is encountered after an object key, ensuring proper state management for subsequent container parsing. - New Test Cases for Tokenizer Robustness: I've added two new test cases to improve the tokenizer's robustness and validate the bug fix.
test_comma_resets_before_containersspecifically reproduces and verifies the corrected behavior for objects and arrays following a comma. Additionally,test_empty_array_with_whitespaceensures that empty arrays containing whitespace are correctly parsed.
Using Gemini Code Assist
The full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips.
Invoking Gemini
You can request assistance from Gemini at any point in your pull request via creating an issue comment (i.e. comment on the pull request page) using either /gemini <command> or @gemini-code-assist <command>. Below is a summary of the supported commands.
| Feature | Command | Description |
|---|---|---|
| Code Review | /gemini review |
Performs a code review for the current pull request in its current state. |
| Pull Request Summary | /gemini summary |
Provides a summary of the current pull request in its current state. |
| Comment | @gemini-code-assist | Responds in comments when explicitly tagged, both in issue comments and review comments. |
| Help | /gemini help |
Displays a list of available commands. |
Customization
To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a .gemini/ folder in the base of the repository. Detailed instructions can be found here.
Limitations & Feedback
Gemini Code Assist is currently in preview and may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with 👍 and 👎 on @gemini-code-assist comments to provide feedback.
You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension.
Footnotes
-
Review the Privacy Notices, Generative AI Prohibited Use Policy, Terms of Service, and learn how to configure Gemini Code Assist in GitHub here. Gemini can make mistakes, so double check it and use code with caution. ↩
![sourcery-ai[bot]](https://avatars.githubusercontent.com/in/48477?s=60&v=4){kind=small}
There was a problem hiding this comment.
Hey @kaidokert - I've reviewed your changes - here's some feedback:
- Consider moving the
context.after_commareset into a shared helper that runs whenever you transition into any new value state (object, array, or primitive) to keep the logic DRY and consistent. - Double-check that you’re resetting
after_commain the array-parsing branches too, so nested arrays don’t encounter the same trailing-comma misinterpretation. - You might rename the
after_commaflag to something likeexpecting_valueorjust_had_commafor clearer intent when reading the state transitions.
Prompt for AI Agents
Please address the comments from this code review:
## Overall Comments
- Consider moving the `context.after_comma` reset into a shared helper that runs whenever you transition into any new value state (object, array, or primitive) to keep the logic DRY and consistent.
- Double-check that you’re resetting `after_comma` in the array-parsing branches too, so nested arrays don’t encounter the same trailing-comma misinterpretation.
- You might rename the `after_comma` flag to something like `expecting_value` or `just_had_comma` for clearer intent when reading the state transitions.Help me be more useful! Please click 👍 or 👎 on each comment and I'll use the feedback to improve your reviews.
There was a problem hiding this comment.
Code Review
This pull request fixes a bug where the comma-tracking flag was not reset when parsing object values, preventing incorrect trailing comma errors in nested structures. The fix is effective, and the added tests provide good coverage. A suggestion has been made to refactor one of the new tests to improve its maintainability.
Summary by Sourcery
Reset the comma-tracking flag when starting object values to avoid false trailing comma errors in nested containers and support whitespace in empty arrays.
Bug Fixes:
after_commaflag on object value initiation to prevent nested objects or arrays from being misinterpreted as trailing commas.Tests:
Summary by CodeRabbit
Bug Fixes
Tests