impl instance method inline

[asukaminato0721]

Summary

enhancement for #2033

find that class method is missing support

Implemented class instance method inline support by adding an AST-based fallback when find_definition can’t resolve self.foo();

it now resolves to the method in the same enclosing class only when the receiver matches the enclosing method’s first parameter and the enclosing method isn’t @staticmethod/@classmethod.

Test Plan

add test

[github-actions]

According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅

[Copilot]

Pull request overview

This PR enhances the inline method refactoring feature (introduced in #2033) to support instance methods within classes. Previously, the inline method refactoring only worked for module-level functions; now it also handles method calls like self.foo() within class contexts.

Changes:

• Added fallback logic to find method definitions when symbol resolution fails for instance method calls
• Implemented AST traversal helpers to locate the enclosing method and resolve self references
• Added test coverage for the basic class method inline scenario

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
pyrefly/lib/state/lsp/quick_fixes/inline_method.rs	Adds find_enclosing_method and find_method_def_for_self_call helper functions to handle instance method resolution, and updates the main code action logic to fall back to AST-based method lookup when symbol resolution fails
pyrefly/lib/test/lsp/code_actions.rs	Adds test case inline_method_for_class to verify that instance methods can be inlined when called via self.foo()

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[meta-codesync]

@kinto0 has imported this pull request. If you are a Meta employee, you can view this in D92313955.

[stroxler]

Review automatically exported from Phabricator review in Meta.

[meta-codesync]

@kinto0 merged this pull request in 922f33f.