impl Autocomplete Abstract, Protocol and method override #1589

[asukaminato0721]

Summary

Fixes part of #1589 #2207

microsoft/pylance-release#146

Implemented an “Implement abstract members” quick fix that derives missing abstract members via the solver, copies signatures/decorators/docstrings, and inserts stubs into the selected class, then wired it into LSP code actions.

Test Plan

added a test.

[Copilot]

Pull request overview

This PR implements a "Implement abstract members" quick fix feature that automatically generates method stubs for abstract methods and protocol members. The implementation detects unimplemented abstract methods from parent classes, copies their signatures/decorators/docstrings, and inserts properly formatted stub implementations.

Changes:

• Added new implement_abstract_members.rs module with logic to detect and generate stubs for abstract/protocol methods
• Integrated the quick fix into LSP code actions in server.rs
• Added comprehensive tests for abstract class members and Protocol implementations

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
pyrefly/lib/state/lsp/quick_fixes/implement_abstract_members.rs	New module implementing the core logic for detecting abstract members and generating method stubs with proper signatures, decorators, and docstrings
pyrefly/lib/state/lsp/quick_fixes/mod.rs	Module declaration for the new implement_abstract_members module
pyrefly/lib/state/lsp.rs	Transaction method exposing the new quick fix functionality
pyrefly/lib/lsp/non_wasm/server.rs	LSP integration to include implement abstract members in code actions
pyrefly/lib/alt/class/class_field.rs	Changed visibility of get_class_member_with_defining_class to pub(crate) to support the new feature
pyrefly/lib/test/lsp/code_actions.rs	Added test helper functions and two comprehensive tests for abstract and protocol implementations; also modified an existing test but introduced a bug with missing ABC import

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[mohaidoss]

Up we need this <3

[asukaminato0721]

cc @jvansch1

[asukaminato0721]

cc @jvansch1

[github-actions]

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