fix(method-lookup): consider embedded named types when resolving

[go-wyvern]

fix(goplus/builder#2499)

Problem Description

When handling the method overload feature, the behavior of types.Interface.Method(i) does not meet expectations.

Root Cause:

• types.Interface uses the underlying approach to retrieve the method set when handling embeddeds
• This approach doesn't use the types.Named type we passed through NewInterfaceType
• The types package implementation itself is correct, but it doesn't accommodate our method overload feature requirements

Solution

Iterate through embeddeds and use types.Named to retrieve methods, ensuring proper handling of method overload scenarios.

[gemini-code-assist]

Summary of Changes

Hello @go-wyvern, 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 introduces a crucial fix to the method lookup mechanism within the codebuild.go file. It specifically enhances the resolution process for struct types by ensuring that methods associated with embedded named types are properly identified and considered. This addresses a previously reported bug, improving the accuracy and completeness of method resolution in the system.

Highlights

• Method Resolution Enhancement: The method lookup logic for struct types has been updated to correctly consider methods defined on embedded named types.
• Bug Fix: This change resolves an issue where methods from embedded named types were not being properly resolved, leading to incorrect behavior in certain scenarios, specifically addressing issue #2499.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.99%. Comparing base (dd9fe4b) to head (5682eaa).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #549      +/-   ##
==========================================
- Coverage   96.01%   95.99%   -0.02%     
==========================================
  Files          23       23              
  Lines        7358     6474     -884     
==========================================
- Hits         7065     6215     -850     
+ Misses        227      193      -34     
  Partials       66       66              

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[gemini-code-assist]

Code Review

The pull request aims to fix method lookup by considering embedded named types. The change introduces a loop to check for methods on embedded types. However, the implementation has two significant issues: it doesn't handle circular embeddings, which can lead to infinite recursion, and it fails to consider embedded pointers to named types. I've provided feedback on both points, including a critical issue regarding the potential stack overflow and a high-severity issue for the incomplete method resolution, with a code suggestion to address the latter.

[xgopilot]

Code Review Summary

The fix correctly addresses method lookup for embedded named types in interfaces. The implementation is clean and follows existing patterns.

Key findings:

• ✅ No security vulnerabilities
• ✅ Performance impact is negligible
• ✅ Code follows existing patterns
• ⚠️ May need to handle non-named embedded interfaces (see inline comment)

The change is production-ready. Consider clarifying whether anonymous embedded interfaces should also be supported.

[xgopilot]

Code Review Summary

The fix correctly addresses method resolution for embedded named interfaces. The implementation follows existing patterns and the test validates the happy path. Three noteworthy issues identified:

1. Critical: Missing cycle detection could cause stack overflow with circular interface embeddings
2. Important: Only Named embedded types are handled; needs documentation or extension
3. Minor: Test coverage could include more edge cases

Overall solid fix that would benefit from defensive cycle detection before merge.