docs: add godoc comments to all exported functions

[cweill]

Summary

• Added comprehensive godoc comments to all exported types, functions, methods, and variables
• Improved code documentation following Go conventions
• Enhanced maintainability and contributor experience

Changes

This PR adds godoc comments to 39+ exported items across 8 files:

Documentation Added

• internal/models/models.go: 25+ exported items (Expression, Field, Receiver, TypeParam, Function, Import, Header, Path and all their methods)
• internal/goparser/goparser.go: 3 exported items (ErrEmptyFile, Result, Parser)
• internal/render/render.go: 4 exported items (Render type, New, Header, TestFunction)
• internal/output/options.go: 2 exported items (Options type, Process method)
• internal/output/helpers.go: 1 exported item (IsFileExist function)
• internal/output/imports.go: 1 exported item (importsMap variable)
• gotests/process/process.go: 2 exported items (Options type, Run function)
• templates/embed.go: 1 exported item (FS variable)

Documentation Standards

All godoc comments follow Go best practices:

• Start with the name of the item being documented
• Use concise, descriptive language
• Focus on what the item does, not implementation details
• Use proper grammar and punctuation

Test plan

• All existing tests pass (100+ test cases)
• No functional changes - documentation only
• Code builds successfully

🤖 Generated with Claude Code

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.70%. Comparing base (44438c9) to head (457245c).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #195   +/-   ##
========================================
  Coverage    81.70%   81.70%           
========================================
  Files            8        8           
  Lines          891      891           
========================================
  Hits           728      728           
  Misses         137      137           
  Partials        26       26           

Files with missing lines	Coverage Δ
internal/goparser/goparser.go	97.21% <ø> (ø)
internal/models/models.go	100.00% <ø> (ø)
internal/output/helpers.go	100.00% <ø> (ø)
internal/output/options.go	65.51% <ø> (ø)
internal/render/render.go	91.42% <ø> (ø)

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[coveralls]

coverage: 84.978%. remained the same
when pulling 457245c on add-godoc-comments
into 44438c9 on develop.

[claude]

PR Review: Documentation Improvements

I've reviewed PR #195 which adds godoc comments to exported items across the codebase. Overall, this is an excellent contribution that significantly improves code maintainability and developer experience. Here's my detailed feedback:

✅ Strengths

1. Comprehensive Coverage: Documentation added to 39+ exported items across 8 files
2. Go Conventions: All comments properly start with the item name (e.g., Expression represents...)
3. Clarity: Documentation is concise and focuses on what items do, not implementation details
4. Zero Functional Changes: Pure documentation PR, reducing risk
5. Consistency: Uniform style across all files

📝 Documentation Quality

Excellent Examples:

• internal/models/models.go:8 - Expression type comment clearly explains purpose and metadata
• internal/goparser/goparser.go:18 - ErrEmptyFile properly documents error condition
• internal/render/render.go:86 - Header method comment describes behavior concisely

Minor Observations:

1. gotests/process/process.go:43-45 - The Run function comment is clear and accurate. Well done!

2. internal/models/models.go:107 - TestResults comment is accurate but quite long. Consider shortening to: TestResults returns the function results, converting any io.Writer parameters to string results.

3. internal/output/imports.go:3-4 - Nice retention of the original implementation note. Good practice!

🔍 Code Quality Assessment

Best Practices: ✅ All exported types, methods, and variables properly documented

Performance: ✅ No performance impact (documentation only)

Security: ✅ No security concerns

Test Coverage: ✅ No changes needed (documentation-only PR)

🎯 Recommendations

Optional Improvements (consider for follow-up PRs):

1. internal/models/models.go:149 - FullName uses deprecated strings.Title. Consider noting this for future refactoring.

2. Consider package-level documentation for packages like internal/output to explain their role in the pipeline.

✅ Final Verdict

LGTM! This PR is ready to merge.

Rating: 5/5 - Excellent work improving developer experience!

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Review performed by Claude Code