fix(annotation): allow all types for encode/decode in string.buffer

[futsuuu]

buffer.{encode,decode} and buf:{encode,decode} can handle not only table, string and number, but also nil, boolean, lightuserdata and FFI type.

[gemini-code-assist]

Summary of Changes

Hello @futsuuu, 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 updates the type annotations for the encode and decode methods within the string.buffer module. The primary goal is to accurately reflect the functions' capability to handle a wider variety of Lua data types, including nil, boolean, lightuserdata, and FFI types, beyond just tables, strings, and numbers. This change enhances code clarity and improves type-checking accuracy for developers utilizing these serialization utilities.

Highlights

• Annotation Update for string.buffer functions: The @param and @return annotations for buffer.encode, buffer.decode, buf:encode, and buf:decode functions have been updated from string.buffer.data to any. This change reflects the broader range of Lua types (nil, boolean, lightuserdata, FFI types) that these serialization/deserialization functions can now handle, as stated in the PR description.

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 by creating a comment using either /gemini <command> or @gemini-code-assist <command>. Below is a summary of the supported commands on the current page.

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 pull request 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 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. If you're interested in giving your feedback about your experience with Gemini Code Assist for Github and other Google products, sign up here.

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

1. 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. ↩

[gemini-code-assist]

Code Review

This pull request correctly updates the type annotations for buf:encode, buf:decode, buffer.encode, and buffer.decode to use any. This change accurately reflects that these functions can handle a wider range of Lua types beyond string, number, and table. The update is consistent across all related functions and improves the overall correctness of the type metadata.