gemini-code-assist[bot] commented on PR #18856: URL: https://github.com/apache/tvm/pull/18856#issuecomment-3978293302
## Summary of Changes Hello, I'm Gemini Code Assist[^1]! 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 critical compatibility issue with Python's PEP 563 (`from __future__ import annotations`) in TVMScript. The changes ensure that TVMScript can correctly parse and resolve variables used within type annotations, even when those variables are part of an outer scope's closure and not explicitly captured by Python's default closure mechanism. This significantly improves the robustness of TVMScript when used with modern Python features. ### Highlights * **PEP 563 Closure Variable Resolution**: Addressed an issue where TVMScript failed to resolve closure variables used in annotations when `from __future__ import annotations` was enabled, as Python does not capture annotation-only variables in `__closure__` under this future import. * **Enhanced Variable Capture Mechanism**: Implemented a fix by wrapping `extra_vars` in a `collections.ChainMap`. This `ChainMap` includes snapshots of all live caller-frame locals (obtained via `inspect.stack()`) as fallback layers, ensuring proper variable lookup for both `prim_func` and `ir_module`. * **New Test Coverage**: Introduced a new test file, `test_tvmscript_pep563_closure.py`, to validate the fix across various scenarios, including closure variables in buffer shapes, dtypes, nested scopes, `ir_module` contexts, and mixed annotation/body usage. 🧠**New Feature in Public Preview:** You can now enable **Memory** to help **Gemini Code Assist** learn from your team's feedback. This makes future code reviews more consistent and personalized to your project's style. **Click [here](https://codeassist.google/code-review/login) to enable Memory in your admin console.** <details> <summary><b>Changelog</b></summary> * **python/tvm/script/parser/ir/entry.py** * Imported `collections.ChainMap` for enhanced variable lookup. * Captured the `inspect.stack()` at the entry point of the `ir_module` decorator. * Modified `extra_vars` to use `ChainMap` for lazy fallback to caller frame locals, addressing PEP 563 compatibility. * **python/tvm/script/parser/tir/entry.py** * Imported `collections.ChainMap` for enhanced variable lookup. * Modified `extra_vars` to use `ChainMap` for lazy fallback to caller frame locals, addressing PEP 563 compatibility. * **tests/python/tvmscript/test_tvmscript_pep563_closure.py** * Added a new test file to verify correct closure variable resolution with `from __future__ import annotations`. * Included tests for `prim_func` with closure variables in buffer shapes and dtypes. * Added tests for nested closures and `ir_module` closure variable usage. * Included a regression test for mixed annotation and body usage of closure variables. </details> <details> <summary><b>Using Gemini Code Assist</b></summary> <br> The full guide for Gemini Code Assist can be found on our [documentation page](https://developers.google.com/gemini-code-assist/docs/review-github-code), here are some quick tips. <b>Invoking Gemini</b> You can request assistance from Gemini at any point by creating a comment using either `/gemini <command>` or `@gemini-code-assist <command>`. 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