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Fix custom sidebar function return and file-scope bindings - #14806
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The custom sidebar Swift view interpreter treated an explicit `return` inside a view helper as just another appended node: a `return` nested in an `if`, `for`, or `switch` did not exit the function, so both the early return and the fallthrough rendered. File-scope `let`/`var` declarations were also never bound, so user functions could not read them. Block evaluation now reports whether a `return` terminated it, and `if`/`for`/`switch` propagate that up to the function call. File-scope variable declarations are bound into the root environment before the view is evaluated. Co-authored-by: Austin Wang <austinwang115@gmail.com> Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Navigate logical layers of code changes, visualize relationships, and explore their blast radius. No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Repository: manaflow-ai/cmux/.coderabbit.yaml Review profile: ASSERTIVE Plan: Advanced Run ID: 📒 Files selected for processing (3)
Included review availability: This review used your included allowance. Your plan provides up to 10 included reviews per hour; 1 remain after this review. 📝 WalkthroughWalkthroughThe interpreter now binds file-scope variables before evaluating top-level expressions and retries forward references. Explicit returns stop view-block evaluation, including when they occur inside loops, conditionals, or switches. ChangesView interpreter behavior
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix Merge Risk: ⚪ Minimal · up to The reviewed changes show no remaining actionable regression; mergeability risk is minimal after normal checks. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to The change affects custom sidebar behavior but does not appear to give sidebar code new authority. Unresolved declarations are prevented from falling back to seeded values. Live sidebar behavior has not yet been validated. Retained concerns Security review detailsSecurity Blast Radius
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Important Pre-merge checks failedPlease resolve all errors before merging. Addressing warnings is optional. ❌ Failed checks (1 error, 1 warning)
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Full details: Cmux Algorithmic ComplexityExplanation The new file-scope binding resolver introduces an O(d²) retry path in Resolution Replace the repeated full-array retry with a dependency-aware worklist. Record the unresolved names read by each initializer, index pending bindings by those names, and enqueue only bindings affected when a name becomes defined. Keep unresolved and cyclic bindings in the pending set, and process each binding at most once per relevant dependency update. Alternatively, add an explicit small declaration limit plus benchmark evidence, but a general fix should preserve forward/helper/interpolation resolution without repeated full scans.
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Inline comments:
In
`@Packages/macOS/CmuxSwiftRender/Sources/CmuxSwiftRender/SwiftViewInterpreter.swift`:
- Line 123: Update bindTopLevelVariables to retry unresolved declarations across
passes, stopping when a pass makes no progress so forward references resolve
without adding lazy initialization or cycle detection; add a regression test
where MARK references a later PREFIX and a helper renders MARK.
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Actionable comments posted: 1
- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
In
@Packages/macOS/CmuxSwiftRender/Sources/CmuxSwiftRender/SwiftViewInterpreter.swift:
- Line 142: Update bindTopLevelVariables and the root EvalEnvironment so
file-scope declarations are tracked before their initializers are evaluated, and
unresolved names remain masked from seeded state until initialization succeeds.
Add a regression test where an unresolved declaration shares a name with a
seeded value and verify that Text does not render the stale value.
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de22b47 Fix custom sidebar function return and file-scope bindings (manaflow-ai#14806)
1 participant
Custom sidebar view helpers now stop at an explicit
return, including returns nested in anif,fororswitch. File-scopeletandvarbindings are available to helpers before the view is evaluated.Revives #9501. Initializers resolve forward references and dependencies through helpers and interpolation. Pending declarations shadow seeded state; cycles and missing names do not block independent view content. Successful initializers are removed from the pending set so they are not evaluated again.
Validation
At
fe0709e596ff1aaed14a63eb7d2590b78b70bad4, all ten focused scope tests and three scoped static checks pass. Separate regression commits reproduced stale seeded values for unresolved declarations and a local binding remaining masked; both pass after their fixes. Independent final repair review found no remaining issues.The full Linux package run passes 75/76 tests; the pre-existing currency-format expectation differs (
US$4.00versus$4.00). Final-head macOS CI passed: all 76 package tests, 231 Swift Testing app-host tests, and 377 XCTest cases (two skipped, no failures). The CLI product lane also passed. Native app-host evidence. The preceding integration head passed all 74 package tests and 213 app-host tests, including the unread-row test repaired by #14568. Live sidebar dogfood was not performed.Need help on this PR? Tag
@codesmith-botwith what you need. Autofix is disabled.Summary by cubic
Fixes the custom sidebar Swift view interpreter so an explicit
returnin a view helper actually exits the function, and makes file-scopelet/vardeclarations visible inside user functions.returnterminated it, andevalIf,evalFor, andevalSwitchpropagate that up to the view function call.returninsideif,for, andswitch, plus file-scope forward, cyclic, unresolved, and seeded-state-shadowing bindings.Written for commit fe0709e. Summary will update on new commits.
Summary by CodeRabbit
Changelog
Fixed: Custom sidebar helper functions can return views and resolve file-scope bindings.