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Author SHA1 Message Date
Gergő Magyar
66f9ec8eff
feat(java): add Java to MIGRATED_LANGUAGES with 100% scope-resolution parity (#1805)
* feat(java): add Java to MIGRATED_LANGUAGES with 100% scope-resolution parity

Route Java through the scope-resolution pipeline instead of the legacy
single-threaded call processor, fixing the analyze hang on large Java
codebases (issue #1741).

Changes:
- Add Java to MIGRATED_LANGUAGES (registry-primary-flag.ts)
- Add tree-sitter queries for var type inference (call-result, alias,
  field-access, enhanced-for), instanceof/switch pattern bindings,
  and method references (User::getName, this::save, User::new)
- Fix importedName to use simple class name instead of FQN so
  finalize binding materialization matches correctly
- Implement buildJavaMro with IMPLEMENTS edge transitive closure
  for interface default method resolution
- Implement populateJavaPackageSiblings for same-package implicit
  class visibility across files
- Implement cross-file return-type mirroring from imported class
  files via populateRangeBindings hook
- Add var type binding post-processing in captures.ts to resolve
  call-result and alias chains from same-file return types
- Add variable-aware argument type inference for overload resolution
- Fix pickConstructorOrClass to walk child scopes for Constructor
  defs (scope-resolution places them in Function scopes)
- Remove over-aggressive field_access suppression in shouldEmitReadMember
  so ACCESSES edges emit for field steps in method chains
- Enable collapseMemberCallsByCallerTarget for legacy parity
- Update unit tests to use Ruby as unmigrated language example

Parity: 178/178 integration tests pass in both registry-primary
and legacy modes.

* fix(java): address code review findings for scope-resolution migration

- pickConstructorOrClass: skip inner Class scopes when walking
  children for Constructor defs (prevents resolving to wrong
  constructor in nested-class scenarios)
- populateJavaCrossFileReturnTypes: filter out parameter-annotation
  bindings from class-scope mirroring to prevent foreign parameter
  types from shadowing local variables
- resolveVarTypeBindings: detect ambiguous names (overloaded methods
  with different return types, same-named variables across scopes)
  and skip resolution rather than last-write-wins
- sharedPrefixLength renamed to sharedSegmentCount: segment-based
  directory proximity for deterministic sort ordering
- Add MAX_PACKAGE_FILES cap (500) to skip O(N^2) package-siblings
  injection for pathologically large packages

* perf(java): optimize hot paths in scope-resolution migration

- Replace O(D^2) list.some() dedup with O(1) Set lookup in
  populateJavaPackageSiblings binding injection
- Replace queue.shift() O(N) with index-based O(1) iteration
  in closeInterfaces BFS traversal
- Cache sharedSegmentCount results per file in sort comparator
  to avoid redundant path splitting

* perf(ingestion): skip deferred accumulation for registry-primary languages

The legacy call/import/heritage processing path accumulates extracted
data from ALL files during the parse phase, then skips registry-primary
files one-by-one during processing.  For a 25K-file Java codebase this
wastes ~150 MB holding calls that are never consumed.

Gate the accumulation with a per-chunk file-path cache: calls, imports,
heritage, constructor bindings, and assignments for registry-primary
languages (Java, Python, TypeScript, Go, C#, C, C++, PHP, JavaScript,
Kotlin) are no longer pushed into the deferred arrays.  The scope-
resolution pipeline handles these languages independently.

Verified: 2258/2258 resolver integration tests pass across all languages.

* fix(java): address Codex adversarial review findings

- Cross-file return binding: detect ambiguous method names across
  imported classes (two classes with same-named methods but different
  return types) and delete the binding rather than first-wins
- Package-siblings: only inject top-level classes (parent is Module
  scope) to prevent nested/inner classes from leaking to package scope
- Add diagnostic log when MAX_PACKAGE_FILES cap fires so operators
  know same-package visibility was disabled for a large package

* fix(test): force REGISTRY_PRIMARY_JAVA=false in legacy call-processor unit tests

Three call-processor test suites use .java file paths to exercise
legacy DAG features (MRO fast path, interface dispatch, class lookup
fallback).  Now that Java is in MIGRATED_LANGUAGES, the call-processor
skips Java files.  Force the flag off in beforeEach/afterEach so the
legacy path runs, matching the existing Python pattern in the same file.

---------

Co-authored-by: Test <test@example.com>
2026-05-24 14:29:26 +01:00
Gergő Magyar
ab077b4c29
feat(ingestion): TypeScript registry-primary scope resolution (Ring 3) (#1050)
* feat(ingestion): TypeScript registry-primary scope resolution (Ring 3)

- Add TypeScript ScopeResolver stack (query/captures/interpret, import decomposition, hooks, arity, merge, receiver binding) and register in SCOPE_RESOLVERS.

- Harden shared compound receiver and receiver-bound CALLS pass for map for-of tuple bindings, dotted typeRef shapes, and callable-alias fallbacks.

- Flip TypeScript into MIGRATED_LANGUAGES; refresh AGENTS.md and type-resolution-system.md.

- Shared finalize-algorithm updates for cross-file scope parity.

- Tests: TS scope-resolution unit suite; legacy call-processor suite forces REGISTRY_PRIMARY_TYPESCRIPT=0; registry-primary flag test opts out TS in override scenario.

Made-with: Cursor

* fix(ingestion): SCC-ordered cross-file return-type propagation + multi-hop re-export resolution

Fix CI failures on PR #1050 (TypeScript registry-primary migration) by
making `propagateImportedReturnTypes` deterministic via reverse-
topological SCC ordering and updating the multi-hop re-export contract
to match `followReexportChain` behavior.

Why: the legacy pass mirrored an intermediate ref instead of the
terminal type when an importer was processed before its source module
had its own typeBindings chain-followed (4-file alias chain regression
in `ts-simple` fixture: `models.User -> service.user -> app.user`
collapsed to `getUser` instead of `User`). Reverse-topological walk of
`indexes.sccs` (leaves first) lets every importer see the source's
already-followed terminal type in a single pass.

Changes:
- `imported-return-types.ts`: rewrite to walk SCCs leaves-first, chain-
  follow the source module's typeBindings BEFORE mirroring, and chain-
  follow the importer's typeBindings AFTER mirroring. Cyclic SCCs
  reach a partial fixpoint (no convergence guarantee, ts-circular only
  asserts no-throw).
- `finalize-algorithm.ts`: docstring update on `FinalizeFile.localDefs`
  to reflect that `followReexportChain` resolves multi-hop re-exports
  through barrels even when intermediates do not surface the name -
  surfacing is now a static optimization, not a correctness requirement.
- `contract/scope-resolver.ts` Invariant I3: explicitly document the
  SCC ordering requirement.
- `pipeline/run.ts`: split PROF timer into `finalize` and `propagate`
  so the pass's cost is observable independently.
- `ARCHITECTURE.md` Performance notes: describe SCC-ordered propagation.
- `imported-return-types.ts`: expand chain-depth comment (2x effective
  depth from pre/post follow), add multi-ref break rationale, add
  `ts-simple` motivating-fixture pointer.

Tests:
- `finalize-algorithm.test.ts`: add 4 cases (3-hop chain, cyclic
  re-export visited-set guard, wildcard re-export fall-through,
  multi-source first-match-wins); fix misleading shared nodeId in the
  thick variant; rename and update the multi-hop test for the new
  contract (transitiveVia assertion on the thin variant).
- `imported-return-types.test.ts` (NEW): unit tests for the SCC pass
  pinning topological collapse, local-annotation guard, missing-source
  skip, and cyclic-SCC no-throw.
- `cross-file-binding.test.ts` + `ts-deep-alias-chain` fixture (NEW):
  5-file integration regression guard for SCC-ordered propagation
  through 4 module boundaries.

Validation: 865 scope-resolution + cross-file tests pass on Windows;
typecheck clean across both packages; only pre-existing Swift overload
failures remain (verified on PR base commit, environmental).

Made-with: Cursor

* fix(ingestion): address PR #1050 review findings — side-effect imports, resolve-cache perf, adapter signature

Three independent fixes surfaced by the production-readiness review of
the TypeScript registry-primary scope-resolution migration (RFC #909
Ring 3). All three pass under both REGISTRY_PRIMARY_TYPESCRIPT=0 and =1.

1. Side-effect imports were silently dropped (correctness regression).
   The legacy DAG emitted IMPORTS edges for `import './polyfill'` because
   its tree-sitter query matches `(import_statement source: (string))`
   regardless of clause. The new registry-primary path returned `[]`
   from `splitImportStatement()` for clause-less imports, so no
   ParsedImport / ImportEdge was ever produced — silent file-level edge
   loss. Add a generic 'side-effect' variant to `ParsedImport` and
   `ImportEdge['kind']` in `gitnexus-shared`; finalize resolves the
   target file and pre-finalizes the edge (no `targetDefId`, no
   `BindingRef`) so the SCC fixpoint loop skips it. The TypeScript
   provider now emits + interprets the new kind end-to-end. The
   variant is intentionally generic so other languages (Rust
   `use foo as _`, Python module-init) can adopt it.

2. Per-import re-derivation in `resolveImportTarget` (perf regression).
   The TS adapter built `new Set(allFilePaths)` on every call and let
   `resolveTsImportTarget` re-derive `allFileList` /
   `normalizedFileList` and discard the `resolveCache`. For a workspace
   with N files and M imports that's O(N × M) work per pass. Wrap the
   adapter in a closure that memoizes all five derived values keyed on
   the orchestrator's `ReadonlySet` identity; reset only when the set
   reference changes (start of new pass). New cost: O(N + M).

3. Misleading fake `ParsedImport` in the adapter (architecture).
   The adapter constructed `{ kind: 'named', localName: '_',
   importedName: '_', targetRaw }` to call `resolveTsImportTarget`,
   even though only `targetRaw` and the structural-typed context are
   read. Extract `resolveTsTarget(targetRaw, ctx)` so the adapter has
   an honest signature; `resolveTsImportTarget` still works for other
   callers. Also extract `narrowTsContext` for the type narrowing.

Tests: - New 4-file fixture `typescript-side-effect-imports` with two
    side-effect imports + one named import.
  - New "TypeScript side-effect imports" describe in
    `test/integration/resolvers/typescript.test.ts` (parity-gated by
    `ci-scope-parity.yml` — runs under both flag states).
  - Updated 2 unit tests to expect 1 side-effect ParsedImport and 4
    `@import.statement` matches (was 0 / 3).
  - 785 / 785 TS scope-resolution tests pass under both
    REGISTRY_PRIMARY_TYPESCRIPT=0 and =1.
Made-with: Cursor

* fix(scope): address Codex adversarial review findings on PR #1050

Four findings from the Codex adversarial review broke registry-primary
TypeScript resolution for common patterns. All four now have unit and
integration regression coverage that pass under both
`REGISTRY_PRIMARY_TYPESCRIPT=0` (legacy DAG) and the default
registry-primary path.

[high] tsconfig path aliases dropped:
Threaded `tsconfigPaths` through ScopeResolver via a new opaque
`resolutionConfig` parameter and a `loadResolutionConfig(repoPath)`
hook. The orchestrator (`scopeResolutionPhase` + `runScopeResolution`)
loads it once per workspace pass and forwards into every
`resolveImportTarget` call. TypeScript resolver now resolves
`@/services/user` style imports through the standard resolver's alias
branch.

[high] TSX parsed with the wrong grammar:
`emitTsScopeCaptures` now picks the parser/query by `filePath`
(`.tsx` -> TSX grammar) and validates cached trees against the
expected grammar via the new exported `tsCachedTreeMatchesGrammar`
helper. Stale TS-grammar trees for `.tsx` files no longer leak through
the scope query.

[medium] Literal dynamic imports never linked:
Added `kind: 'dynamic-resolved'` to `ParsedImport` and `ImportEdge`.
The decomposer emits a synthetic `@import.literal` capture for
string-literal dynamic imports; the interpreter maps that to
`dynamic-resolved`; finalize pre-finalizes it as a file-level terminal
(same shape as `side-effect`). `import('./feature')` now produces a
real IMPORTS edge under the registry-primary path. Legacy DAG keeps
its existing behavior — the new integration assertion is gated behind
the flag.

[medium] Namespace re-exports invisible from barrels:
The decomposer now emits TWO captures for `export * as ns from './m'`
— the existing `reexport-namespace` import draft AND a synthetic
`@declaration.namespace` capture (via `buildNamespaceDeclarationMatch`).
The latter creates a Namespace `SymbolDefinition` in the barrel's
`localDefs`, so downstream `import { ns } from './barrel'` resolves
through `findExportByName`.

Regression fixtures under `gitnexus/test/fixtures/lang-resolution/`:
- typescript-tsconfig-aliases (`@/` alias)
- typescript-tsx-jsx (Button.tsx + App.tsx with JSX)
- typescript-dynamic-import (`await import('./feature')`)
- typescript-reexport-namespace (`export * as Models from './base'`)

Validation:
- gitnexus-shared builds clean
- gitnexus typecheck clean
- 385/385 TS scope-resolution tests pass under both
  `REGISTRY_PRIMARY_TYPESCRIPT=0` and default

Made-with: Cursor

* perf(scope): O(1) defById lookup + bounded re-export depth (PR #1050 round 3)

Addresses the round-3 PR #1050 reviews (Claude adversarial + xkonjin):
both flagged the existing O(N²) `findDefById` linear scan in
`materializeBindings` and the unbounded recursion in
`followReexportChain` as production-readiness blockers for TypeScript
monorepos. Both fixes land alongside their regression tests under
both `REGISTRY_PRIMARY_TYPESCRIPT=0` and the default registry-primary
path.

[high] materializeBindings O(N_files × N_defs × N_edges) → O(N_defs + N_edges):
Build a `nodeId → SymbolDefinition` index map once at the top of
`materializeBindings` (one O(N_defs) pass), then replace the per-edge
`findDefById(files, edge.targetDefId)` linear scan with an O(1)
`defById.get(edge.targetDefId)` lookup. Also drop the now-unused
`findDefById` helper. At realistic TypeScript monorepo scale (~5k
files × ~50 defs/file × ~100k linked import edges) this is the
difference between ~25 s and a few ms inside finalize. Regression
test in `finalize-algorithm.test.ts` builds 200 leaf files +
1 consumer importing one symbol from each, asserts every binding
materializes correctly.

[medium] followReexportChain unbounded recursion:
The existing `visited` set caps depth at `O(N_files)` but allows
recursion proportional to barrel-chain depth, mismatching the
explicit "Iterative DFS to avoid stack overflow" policy in
`tarjanSccs`. Added a `MAX_REEXPORT_DEPTH = 100` constant and a
`depth` parameter to `followReexportChain` (defaults to 0); each
recursive call passes `depth + 1` and the function returns `null`
when the cap is exceeded. 100 is comfortably above any realistic
hand-authored barrel chain (typical depth 1-5; auto-generated
barrels rarely exceed 20) while staying well below JS engine call
stack limits. Regression test wires a 200-link reexport chain and
verifies the crawl terminates cleanly with `linkStatus: 'unresolved'`
(no terminal def reachable within the budget).

[low] synthesizeInstanceofNarrowings bare-identifier-only limitation:
xkonjin's review #4 noted that the LHS narrowing only handles bare
identifiers (`if (x instanceof Foo)`), not member expressions
(`if (user.address instanceof Address)`). Added a JSDoc note
explaining the constraint and pointing readers at field-type
resolution as the workaround for member-chain receivers.

Validation:
- gitnexus-shared builds clean
- gitnexus typecheck clean
- 413/413 tests pass under both flag states for finalize-algorithm +
  TS unit + TS integration suites
- 972/972 tests pass across full scope-resolution + Python +
  C# integration smoke (no cross-language regression)

Made-with: Cursor

* refactor(finalize): replace recursive followReexportChain with SCC-condensed iterative closure

The legacy `followReexportChain` walked re-export drafts via mutual
recursion guarded by a per-call visited set + a `MAX_REEXPORT_DEPTH`
ceiling. Recursion is fragile (call-stack ceiling, no bound on depth
that's actually meaningful), so this replaces it with a structurally
better algorithm: a precomputed per-file re-export closure built by
running Tarjan SCC over the re-export sub-graph and propagating names
in reverse-topological order with a bounded intra-SCC fixpoint.

Algorithm (`buildReexportClosures` in finalize-algorithm.ts):

  1. Sub-graph: build the directed graph of `reexport` + `wildcard`
     drafts only (regular/namespace/dynamic imports do not contribute).
  2. SCC condensation: run the same iterative `tarjanSccs` already
     used for the file-level import graph; output is in reverse-topo
     order so out-of-SCC neighbors are always already-finalized.
  3. Per-SCC propagation:
       - Acyclic singleton: one pass populates from neighbors' closures.
       - Cyclic SCC: bounded fixpoint capped at |SCC|+1 iterations.
         With first-wins precedence the closure map is monotone, so
         each name needs at most |SCC| hops to traverse the cycle.

Precedence (preserved from the recursive crawl):
  - Named re-exports take precedence over wildcards.
  - Within each kind, declaration order wins.

Lookup at finalize time becomes O(1) (`lookupReexportedName`), down
from O(chain_depth × drafts) per consult and recursive at that.

Properties vs the legacy implementation:
  - Stack-safe by construction; no `MAX_REEXPORT_DEPTH` guard needed.
  - 1000-hop barrel chains now resolve in full (legacy capped at 100
    and surfaced anything deeper as `unresolved`).
  - Cycles handled structurally via SCC, not via per-call visited set.
  - Same observable semantics: every existing test passes unchanged.

Tests:
  - Replace the obsolete `MAX_REEXPORT_DEPTH (200-hop chain stops
    cleanly without stack overflow)` test (which asserted the OLD
    bug — that deep chains failed to resolve) with a positive
    1000-hop test that asserts full resolution + accurate
    `transitiveVia`. Proves both the recursion is gone AND the
    closure correctly inherits the leaf def across all hops.
  - Update commentary on adjacent re-export tests to reference the
    closure mechanism.
  - Update `FinalizeFile.localDefs` JSDoc + import-decomposer.ts
    inline doc to point at `buildReexportClosures` instead of the
    removed function name.

Validation: - gitnexus-shared builds cleanly.
  - gitnexus typechecks cleanly.
  - 28/28 finalize-algorithm.test.ts tests pass (incl. new 1000-hop).
  - 801/801 TypeScript scope-resolution tests pass under default
    (registry-primary) AND `REGISTRY_PRIMARY_TYPESCRIPT=0` (legacy DAG).
  - 404/404 Python + C# integration tests pass — no regression in
    cross-language consumers of the shared `finalize`.
Made-with: Cursor

* fix(scope): remove non-null assertions from scope resolution

Made-with: Cursor

* fix(scope): address TypeScript review follow-ups

Made-with: Cursor

* fix(scope): address TypeScript import review follow-ups

Add regression coverage for non-binding import edges and circular TypeScript bindings so PR #1050 review concerns stay visible without changing runtime semantics.

Made-with: Cursor
2026-04-26 08:23:08 +01:00
Copilot
ff4ae89aaa
feat(python): scope-based call resolution + registry-primary flip + perf + generalization (RFC #909 Ring 3) (#980)
* Initial plan

* plan: Python scope-based resolution migration

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* feat(python): scope-based resolution provider hooks + 62 tests

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* refactor(python): split scope-hooks monolith into focused modules

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* test(python): integration-style scope-resolution tests + suffixResolve fallback

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* wire python scope-based resolution end-to-end (initial pass)

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* keep legacy IMPORTS for python (heritage needs importMap), scope phase owns CALLS only

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* test(python): remove parallel scope-resolution integration test

The new test/integration/python-scope-resolution.test.ts duplicated coverage
the reviewer explicitly rejected. The existing
test/integration/resolvers/python.test.ts (191 tests, driven by
runPipelineFromRepo) is the source of truth for Ring 3 parity.

Also document the IMPORTS-emission follow-up gap: wiring emitImportEdges
in python-scope-emit.ts today regresses 10 IMPORTS-edge fixtures because
the scope-extractor's ImportEdge coverage is narrower than legacy
pythonImportConfig.importResolver. Tracked as a follow-up.

Baseline with REGISTRY_PRIMARY_PYTHON=1 is unchanged: 109/191 pass.

* feat(ingestion): scope-resolution phase owns Python IMPORTS edges (RFC #909 Ring 3)

When `REGISTRY_PRIMARY_PYTHON=1`, IMPORTS graph edges for Python files are now
emitted exclusively by the new scope-resolution path. The legacy
`import-processor` still runs — heritage resolution needs its importMap /
namedImportMap / moduleAliasMap population — but its graph edge emission is
gated per-language so Python no longer double-emits.

This closes the reviewer's second change request on PR #980: "the legacy path
must be turned off". Legacy IMPORTS edges for Python are now off by default
when the flag is enabled.

Three bugs were fixed to make the new path's coverage match legacy:

1. **Root-file bailout** (import-resolvers/python.ts): `resolvePythonImportInternal`
   returned null immediately when the importer file lived at the repo root
   (importerDir === ''). The ancestor directory walk further down already
   handles this case correctly; the early return was the bug. Proximity check
   now only runs when importerDir is non-empty, and the ancestor walk sees
   root-level files for the first time.

2. **External dotted imports** (languages/python/import-target.ts): the new
   path fell straight through to `suffixResolve` for multi-segment imports,
   which happily matched `django.apps` to a local `accounts/apps.py`. Mirror
   `pythonImportStrategy`'s `hasRepoCandidate` guard — suffix-match only when
   the leading segment exists somewhere in-repo as a package, __init__.py,
   or namespace directory.

3. **suffixResolve ambiguity** (languages/python/import-target.ts): the
   shared `suffixResolve` helper requires a pre-built `SuffixIndex` to
   disambiguate ties. Without one it falls back to an O(files) scan that
   silently picks the first match when the last segment collides across
   directories (e.g. `accounts.models` matching `billing/models.py`).
   Replaced with `resolveAbsoluteFromFiles` — exact lookup first, then a
   deterministic suffix match.

Validation:
- Flag OFF: 191/191 pass (no regression).
- Flag ON: 109/191 pass (82 fail — exact baseline match; remaining 82 are
  unchanged CALLS-edge provider-feature gaps tracked as Phase B follow-ups).
- `tsc --noEmit`: clean.

The 82 CALLS failures cluster into 44 describe blocks covering type-inference
features (assignment chains, walrus, class-level annotations, constructor
inference, C3 MRO, overload dispatch, return-type inference) that need
dedicated Ring 3 follow-up work. Each cluster is tracked against the RFC #909
shadow-parity gate (>=99% fixtures / >=98% corpus) in the per-language ticket.

* ci(scope-resolution): automatic parity gate driven by MIGRATED_LANGUAGES

Adds the Ring 3 parity gate the RFC §6.4 requires: when a language's
scope-resolution migration is marked complete, CI runs its resolver
integration test twice on every PR (once with the legacy DAG, once with
the registry-primary path) and both must pass.

The "is this language migrated" signal is a single TypeScript constant:

  // gitnexus/src/core/ingestion/registry-primary-flag.ts
  export const MIGRATED_LANGUAGES: ReadonlySet<SupportedLanguages> =
    new Set([ /* SupportedLanguages.Python when ready */ ]);

Adding a language here has three simultaneous effects:

  1. `isRegistryPrimary(lang)` defaults to true for that language in
     production (env-var override still wins if set explicitly).
  2. `.github/workflows/ci-scope-parity.yml` auto-discovers the set via
     `npx tsx scripts/ci-list-migrated-languages.ts`, builds a parity
     matrix, and runs:
       - `REGISTRY_PRIMARY_<LANG>=0 npx vitest run resolvers/<slug>.test.ts`
       - `REGISTRY_PRIMARY_<LANG>=1 npx vitest run resolvers/<slug>.test.ts`
     Both legs must pass for the job to succeed.
  3. Legacy-path gating in call-processor.ts / import-processor.ts kicks
     in automatically through the same `isRegistryPrimary` lookup.

No JSON registry, no manual workflow edit, no second source of truth —
contributors update the Set and CI picks it up. Empty Set = parity job
is a skipped matrix (workflow still reports success).

The new `scope-parity` reusable workflow is added to ci.yml's `needs`
graph and ci-status gate. Its result must be `success` (skipped would
mean upstream discover job failed and should block).

Validation (with empty MIGRATED_LANGUAGES set):
- flag OFF: 191/191 pass (no behavior change)
- flag ON (manual REGISTRY_PRIMARY_PYTHON=1): 82 fails = baseline exact match
- `npx tsc --noEmit`: clean
- concurrency-convention script: pass
- tsx discovery script: emits `[]` correctly

* ci(scope-resolution): keep MIGRATED_LANGUAGES empty; fix linter auto-uncomment

Previous commit's example entry got auto-uncommented (linter preferred a
type-checkable `SupportedLanguages.Python` over a commented-out reference).
That would have triggered the parity CI gate against Python, which today
has 82 known flag-on failures — unintended and would block the PR.

Use the explicit generic `new Set<SupportedLanguages>([])` so an empty set
still type-checks without needing an uncommented-out sample member.
Example in the comment now has `//   SupportedLanguages.Python,` so it
remains illustrative without participating in the set.

* feat(python): capture constructor-inferred + annotated type bindings

Extends the Python scope-extractor with two new type-binding capture
patterns so receiver-typed method dispatch has concrete type bindings
to work from:

1. `u: User = ...` / `u: User` — variable annotations. `@type-binding.annotation`
   anchor, `source: 'annotation'`.
2. `u = User("alice")` — assignment RHS is a bare-identifier call (Python
   has no `new` keyword; constructor-shaped calls are syntactically
   identical to function calls). `@type-binding.constructor` anchor,
   `source: 'constructor-inferred'`.

The runtime query lives in `query.ts` (the `.scm` file is documentation
per the comment at its top); both are updated.

Fixes 19 failures across these resolver fixtures (flag-on 82 → 63):
- Python constructor-inferred type resolution (3)
- Python class-level annotation resolution (3)
- Python nullable receiver resolution (3)
- Python member-call / receiver-constrained / constructor-call (3)
- Python assignment chain propagation (2)
- Python walrus / match-case / chained method (3)
- Python member access iterable for-loop (2)

* feat(python): strip nullable unions + prefer annotations over inference

Two linked changes that together fix the 4 nullable-receiver tests:

1. `stripNullable` in Python's `interpretTypeBinding` unwraps `User | None`,
   `None | User`, and `Optional[User]` to `User`, so receiver-typed
   resolution treats nullable receivers identically to non-nullable ones.
   Three-arm unions (`User | Error | None`) are left unchanged — truly
   ambiguous for single-receiver inference.

2. Source-strength ordering in `pass4CollectTypeBindings`. When multiple
   matches fire for the same bound name in the same scope — e.g. the
   `u: User = find()` idiom where both the annotation and
   constructor-inferred patterns match — the explicit annotation now
   wins regardless of query-match arrival order. Rank:
     explicit (annotation / parameter-annotation / return-annotation / self) > inferred

Also reorders the two Python patterns in query.ts / scopes.scm so the
constructor-inferred pattern appears first — a belt-and-braces fallback
that keeps behavior deterministic if the shared priority ranking is ever
revisited.

Fixes 4 failures (flag-on 63 → 59):
- Python nullable receiver resolution (4 tests)

Flag-off regression check: 191/191 still pass.

* feat(python): walrus, qualified-call, match-case type bindings

Extends the constructor-inferred family of captures with three more
assignment-shaped patterns that all bind a variable to a class-like type:

- Walrus: `(u := User(...))` → `u: User` via `(named_expression)`.
- Qualified call RHS: `u = models.User(...)` → `u: models.User` via
  `(attribute)` node .text. Falls through resolveTypeRef Phase 2
  (QualifiedNameIndex dotted fallback).
- Match as-pattern: `case User() as u:` → `u: User` via `(as_pattern)`
  + `(class_pattern (dotted_name))`.

Fixes 2 failures (flag-on 59 → 57):
- Python walrus operator type inference
- Python match/case as-pattern type binding

Qualified-call constructor tests still fail because they require
cross-module qualifiedName registration (models.User → models.py's User
class) which isn't yet wired in the Python extractor. Tracked as
follow-up alongside module-import CALLS (#337) resolution.

* feat(python): chain type bindings + strip list[T] generic for for-loop

Adds two capture patterns and a shared transitive-closure pass that
together handle Python's variable-aliasing and for-loop-over-typed-
iterable patterns:

1. `(assignment left: (identifier) right: (identifier))` — `alias = u`.
2. `(for_statement left: (identifier) right: (identifier))` — `for u in users`.

Both emit `@type-binding.alias` with the RHS identifier as rawName. The
shared `pass4CollectTypeBindings` now runs a final transitive-closure
walk that follows identifier-chain TypeRefs through the declaring scope
and its ancestors (depth-capped, cycle-guarded) so `alias` ultimately
points at the class type instead of another local variable name.

Generic stripping in `interpret.ts` unwraps single-arg collection
wrappers — `list[User]`, `set[User]`, `Iterable[User]`, etc. — to the
element type. Multi-arg generics (`dict[str, User]`, `Callable[...]`)
are left alone; their semantics aren't unambiguous.

Fixes 8 failures (flag-on 57 → 49):
- Python assignment chain propagation (4)
- Python nullable + assignment chain (2)
- Python walrus operator (:=) assignment chain (2)

Flag-off still 191/191.

* feat(python): namespace & class receiver resolution + file-level caller fallback

Adds a Python-specific post-resolution pass `emitReceiverBoundCalls`
that closes two receiver gaps the shared `MethodRegistry.lookup` doesn't
cover:

1. **Namespace receivers** — `import models; models.User()` /
   `import models as m; m.User()`. The shared `lookupReceiverType` only
   walks `scope.typeBindings`; namespace imports never land there
   (they're filtered out of `scope.bindings` when the target module
   has no self-named def, per `finalize-algorithm.ts:540`). The new
   pass walks `indexes.imports` directly, builds a per-file
   `localName → targetFilePath` map, and emits CALLS/ACCESSES edges
   against the target file's `localDefs`.

2. **Class-name receivers** — `Dog.classify("dog")`. The shared resolver
   requires typeBindings; class bindings in `scope.bindings` are never
   consulted as receivers. The new pass checks class-kind bindings in
   the call scope's chain and resolves members via `ownerId`.

Also fixes module-level call attribution: `resolveCallerGraphId` now
falls back to the File node id (`generateId('File', filePath)`) when no
enclosing function/method/class is found. Matches legacy DAG behavior
for module-scope calls like `u = models.User()` at the top of app.py.

Fixes 4 failures (flag-on 49 → 45):
- Python module import CALLS resolution (Issue #337) (4 of 7)

Flag-off still 191/191.

* feat(python): dotted-typebinding receiver resolution

Adds case 3 to `emitReceiverBoundCalls`: when a receiver's typeBinding
has a dotted rawName like `u: models.User` (the constructor-inferred
form fired by `u = models.User(...)`), walk the namespace map + target
file's defs to find the class, then look up the member via ownerId.

`resolveTypeRef`'s QualifiedNameIndex fallback can't cover this because
the target class's qualifiedName in models.py is just `"User"`, not
`"models.User"` — the dotted form only exists in the call-site file's
receiver expression. This pass bridges that gap without modifying the
shared registry.

Fixes 9 more failures (flag-on 45 → 36):
- Python qualified constructor inference (2)
- Python module import CALLS resolution (Issue #337) (3)
- (cluster overlap — several downstream tests in assignment/nullable/
  walrus that propagate through qualified-ctor bindings also benefit)

Flag-off still 191/191.

* feat(python): consult finalized bindings for receiver resolution

`findClassBindingInScope` now walks BOTH:
  1. `scope.bindings` — pre-finalize local declarations (origin: 'local')
  2. `indexes.bindings` — post-finalize cross-file imports/namespaces

Without (2) we were blind to any class brought in via
`from models import Dog` at the call site's file, because the
scope-extractor's Pass 2 only populates local bindings and the
cross-file finalize produces a separate bindings map that never lands
on `scope.bindings`.

Case 2 (`Dog.classify()`) now walks MRO so inherited static/class
methods resolve — `Dog.classify()` where `classify` lives on `Animal`.

Case 4 (simple typeBinding like `u: U` from aliased import) now uses
`findClassBindingInScope` instead of the shared `resolveTypeRef`,
because `resolveTypeRef`'s `ctx.scopes` only sees pre-finalize local
bindings too.

Fixes 4 more failures (flag-on 36 → 32):
- Python method enrichment > Dog.classify static (1)
- Python static/classmethod class-as-receiver (2)
- Python alias import resolution (1)

Flag-off still 191/191.

* refactor(python-scope): extract language-agnostic emit-core/

Unit 1 of the python migration architectural plan
(docs/plans/2026-04-19-001-refactor-python-migration-architectural-plan.md).

Splits python-scope-emit.ts (~945 → 481 lines) by lifting 14 generic
graph-feeding primitives into emit-core/:
  - graph-node-lookup, graph-id, emit-edge
  - emit-references, emit-imports
  - scope-walkers (findReceiverTypeBinding, findClassBindingInScope,
    findOwnedMember, findExportedDef)
  - namespace-targets, method-dispatch-bridge

Each file carries a "Next-consumer contract" JSDoc so future language
migrations (TS #927, JS #928, Java, Kotlin, Ruby) import from emit-core
rather than re-implementing. python-scope-emit.ts keeps only the four
Python-specific pieces: runPythonScopeResolution (orchestrator),
buildPythonMro, emitReceiverBoundCalls (4 cases), populateMethodOwnerIds
— these move to languages/python/emit/ in Unit 11.

Pure refactor, zero behavior change:
  - flag-off: 191/191 python.test.ts pass (identical baseline).
  - flag-on (REGISTRY_PRIMARY_PYTHON=1): 32 fail / 159 pass (identical
    baseline — the refactor neither fixes nor regresses any test).
  - tsc --noEmit clean.

* feat(python-scope): arity metadata + bind function decls in parent scope

Unit 2 of the python migration architectural plan
(docs/plans/2026-04-19-001-refactor-python-migration-architectural-plan.md).

Two changes that the registry-primary path needs before any of the
arity-sensitive failures can move:

1. Arity metadata on scope-extracted Function/Method defs.
   - New helper `languages/python/arity-metadata.ts` reuses
     `pythonMethodConfig.extractParameters` so self/cls stripping,
     defaults, and *args/**kwargs detection match legacy semantics.
   - `emit-captures.ts` synthesizes
     `@declaration.parameter-count` /
     `@declaration.required-parameter-count` /
     `@declaration.parameter-types` captures on every
     `@declaration.function` match.
   - Generic `scope-extractor.ts buildDefFromDeclarationMatch` reads
     the three optional captures into `SymbolDefinition`. Absence is
     still the no-op default for non-Python providers.

2. Hoist function/class declaration bindings to the enclosing scope.
   The "innermost scope containing the anchor" default placed
   `def greet(...)` inside greet's OWN body — invisible to other
   module-level callers, so every flag-on free-call resolved to
   `unresolved`. The hoist condition (`anchor range == innermost
   range`) only fires for scope-creating declarations, so variable /
   for-loop captures whose anchor is a child identifier stay put.
   Hooks can still override via `bindingScopeFor`.

Verification:
  - Flag-off: 191/191 (identical baseline).
  - Flag-on (REGISTRY_PRIMARY_PYTHON=1): 31 fail / 160 pass
    (was 32/159; the hoist unblocks free-call resolution end-to-end).
  - tsc --noEmit clean.

Per-(source,target) edge collapse for multi-call-site cases
(default-params, variadic) still pending — landing it without
regressing the static-method find_user fixture (which expects two
distinct edges through different targets) needs the ownership-aware
qualified-id work that lands with Unit 4 / Unit 11.

* feat(python-scope): capture function return-type annotations

Unit 3 of the python migration architectural plan
(docs/plans/2026-04-19-001-refactor-python-migration-architectural-plan.md).

Wires the `def get_user() -> User` return-type annotation into the
typeBindings stream so the existing constructor-inferred + transitive
chain machinery can resolve `u = get_user(); u.save()` to `User#save`
without any orchestrator change.

Changes:
- `query.ts` + `scopes.scm`: new `@type-binding.return` pattern keyed by
  the function name (matches RFC §5.1 canonical vocabulary).
- `interpret.ts`: maps `@type-binding.return` to the existing
  `'return-annotation'` source label (no shared change needed).
- `scope-extractor.ts pass4CollectTypeBindings`: extends the Pass 2
  auto-hoist (anchor range == innermost scope range → bind in parent)
  to type bindings as well — return-type bindings whose anchor IS the
  function_definition land in the function's enclosing scope so
  callers see them.

Same-file return-type inference is now end-to-end:
  `def get_user() -> User: ...` + `u = get_user()` produces
  `u: User (return-annotation)` in the caller's scope via
  `followChainedRef`.

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 31 fail / 160 pass (no change — every remaining
  return-type test in this fixture set is *cross-file*; carrying
  `get_user → User` across module boundaries lands with the
  cross-file typeBinding propagation work in Unit 5/7).
- tsc --noEmit clean.

* feat(python-scope): resolve dotted receivers via class-scope field types

Unit 4 partial — the dotted-receiver case (`user.address.save()`).

Class-body annotations like `class User: address: Address` already
land in the class scope's typeBindings via the existing
`@type-binding.annotation` capture. This commit consumes that signal:

- Build a `Map<classDefId, Scope>` from every parsed file's class
  scopes once per resolution pass.
- New Case 0 in `emitReceiverBoundCalls`: when the receiver's name
  contains a dot, walk the chain — resolve the head's type, then for
  each remaining segment look up that field's type in the owner
  class's scope.typeBindings, then emit the call against the final
  class with MRO walk.
- Cross-scope lookups use each TypeRef's `declaredAtScope` so an
  imported `Address` resolves in the file that owns the field
  declaration, not the file holding the call site.

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 29 fail / 162 pass (was 31/160; both `Field type
  resolution` fixtures now pass — same-file and cross-file disambig).
- tsc --noEmit clean.

Remaining Unit 4 work (write ACCESSES, `self.X` for-loop iteration)
needs Unit 6's tuple/iterable destructuring before it can land —
`for u in self.users` requires the iterable typing path.

* feat(python-scope): chain receiver via call-expression return types

Unit 5 — extends the compound-receiver case to handle call-expression
receivers (`svc.get_user().save()`).

`resolveCompoundReceiverClass` is the single recursive entry point for
all compound receivers. Three shapes:
  - bare identifier — typeBinding chain
  - dotted `obj.field[.field]…` — class-scope field types
  - call `expr.method()` — recurse into expr, look up method's
    return-type typeBinding on its class scope

Method return-type bindings auto-hoist to the parent (class) scope per
Unit 3, so `methodClassScope.typeBindings.get(methodName)` is the
canonical lookup. Free-call return types (`get_user()`) walk the
caller's scope chain.

Depth-capped at 4 hops to bound recursion.

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 28 fail / 163 pass (was 29/162; `Python chained method
  call resolution` now passes).
- tsc --noEmit clean.

Two related tests (`city.save() via method chain`, `c.greet().save()
depth-2 MRO`) still fail because the captures yield typeBindings
shaped like `city → user.get_city` (no trailing parens — the capture
grabs the attribute text). Resolving those needs a follow step that
detects the call-shape rawName and feeds it through the compound
recurser. Lands with the chain-typeBinding work in a follow-up.

* feat(python-scope): free-call fallback consults finalized bindings

Unit 7 — closes the cross-file free-call gap.

The shared `MethodRegistry.lookup` walks `scope.bindings` (pre-finalize
local-only) for free-call resolution. Cross-file imports land in
`indexes.bindings` (post-finalize). Without the dual-source lookup,
`from x import f; f()` resolves to "unresolved" and no CALLS edge is
emitted.

Two changes:

- `emit-core/scope-walkers.ts`: new `findCallableBindingInScope` —
  same dual-source pattern as `findClassBindingInScope`, but accepts
  Function/Method/Constructor. Promoted to emit-core because every
  language with cross-file imports needs the same lookup.
- `python-scope-emit.ts emitFreeCallFallback`: post-pass that walks
  every free-call reference site, looks up the callee with the new
  helper, and emits via `tryEmitEdge`. Pre-seeds `seen` from the
  shared resolver's emissions so we never double-count.

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 22 fail / 169 pass (was 28/163; +6 tests including
  the Python overload dispatch fixtures, ancestor-directory imports,
  and same-name module-alias collision).
- tsc --noEmit clean.

* feat(python-scope): super() receiver dispatches up the MRO

Unit 8 — `super().method()` inside a class method walks the enclosing
class's MRO chain (skipping self) and resolves to the first ancestor
that owns the method.

New receiver branch in `emitReceiverBoundCalls` recognizes
`super(...)` syntactically (regex-cheap), finds the enclosing class
via a new `findEnclosingClassDef` scope-walk helper, then re-uses
`scopes.methodDispatch.mroFor` + `findOwnedMember` from the existing
class-receiver path. Handled before the compound-receiver case so
`super()` doesn't fall into the bare-identifier branch where `super`
isn't a binding.

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 21 fail / 170 pass (was 22/169; `super().save() inside
  User to BaseModel.save` now passes).
- tsc --noEmit clean.

* feat(python-scope): suppress shared resolver on member-call sites

Unit 9 — `app_metrics.get_metrics()` (namespace import alias) was
emitting two CALLS edges: a wrong self-call from the shared
resolver's free-call fallback, plus the correct namespace-receiver
edge from the Python post-pass.

Mechanism:

- `emit-core/emit-references.ts`: new optional `skipSites` parameter
  (`Set<string>` of `${filePath}:${line}:${col}` keys). When supplied,
  references at those positions are skipped — the provider has
  already emitted (or chosen not to emit) for that site.
- `python-scope-emit.ts`: reorders Phase 4 — receiver-bound + free-
  call fallback run FIRST, populating `handledSites`. The shared
  `emitReferencesViaLookup` then runs with that set so the resolver's
  fallback can't fight a precise per-receiver emission. Site keys are
  added only on successful tryEmitEdge (not for sites the post-pass
  saw but couldn't resolve — those still get a chance from the shared
  path).

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 20 fail / 171 pass (was 21/170; same-name module-alias
  collision now resolves correctly).
- tsc --noEmit clean.

* feat(python-scope): propagate return-type bindings across imports

Closes the cross-file return-type propagation gap that left tests
like `u = get_user(); u.save()` (where get_user lives in another
file) with `u` typed as the function name instead of its return type.

The shared finalize pass copies callable bindings (`from x import f`
puts `f` in the importer's bindings) but typeBindings stay file-local
because they live on `Scope.typeBindings`, not on the index. Mutate
post-finalize:

- For each module-scope import binding (`origin: 'import'` or
  `'reexport'`), look up the source file's module-scope typeBinding
  for the def's simple name. If present (return-annotation source),
  mirror it under the importer's local alias. Skip when the importer
  already has its own typeBinding for the name (explicit local always
  wins).
- After propagation, re-run a chain-follow on every scope's
  typeBindings — pass-4 ran before propagation and missed any chain
  whose terminal lived in a foreign file. Same algorithm as
  `followChainedRef` in scope-extractor, but operates on the
  finalized scopes so propagated entries are visible.

Mutating `Scope.typeBindings` is safe — `draftToScope` constructs a
plain `new Map(...)`, not a frozen one.

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 16 fail / 175 pass (was 20/171; +4 — both cross-file
  return-type tests, plus two related propagation cases).
- tsc --noEmit clean.

* feat(python-scope): for-loop call-iterable typeBinding

Adds `(for_statement left: (identifier) right: (call function:
(identifier)))` to the typeBinding capture set. Combined with Unit 3's
return-type capture and the cross-file return-type propagation pass,
this makes `for u in get_users(): u.save()` resolve to `User.save`
even when `get_users` is imported from another module.

Captured as `@type-binding.alias` (rawName = function identifier,
without parens) so the existing chain-follow walks the alias to the
function's return-type binding without any new code path.

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 12 fail / 179 pass (was 16/175; +4 for-loop call-iterable
  tests across get_users / get_repos fixtures).
- tsc --noEmit clean.

* feat(python-scope): collapse free-call edges per (caller, target)

Free calls (no explicit receiver) now emit a single CALLS edge per
(caller, target) pair regardless of how many call sites the caller
contains. Mirrors the legacy DAG's per-pair dedup contract — what
the `default-params`, `variadic`, and `overload` fixtures expect.

Member calls keep position-based dedup so distinct resolved targets
(e.g. UserService.find_user vs AdminService.find_user from the same
caller) still produce distinct edges.

Implementation: bypass `tryEmitEdge` (which dedupes positionally) and
hand-roll the relationship with a position-independent rel.id
(`rel:CALLS:<caller>-><target>`). Site handling is now unconditional —
even when the dedup-collapse skips the actual emit, we mark the site
handled so the shared `emit-references` doesn't fight us with its
fallback.

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 10 fail / 181 pass (was 12/179; +2 — both `default
  parameter arity` tests now pass).
- tsc --noEmit clean.

* fix(python-scope): match legacy CALLS reason for import-resolved free calls

The arity-narrowing test asserts \`rel.reason === 'import-resolved'\`
for cross-file free-call edges. Switch the free-call fallback's
reason to mirror legacy DAG semantics:
  - target-file !== source-file → 'import-resolved'
  - same file                   → 'local-call'

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 9 fail / 182 pass (was 10/181; +1 arity-narrowing test).
- tsc --noEmit clean.

* fix(python-scope): drop dead pre-seeding from receiver-bound pass

The pre-seeding loop at the top of \`emitReceiverBoundCalls\` populated
\`seen\` with every reference the shared resolver had already resolved.
That was useful when emit-references ran FIRST. After Unit 9 reversed
the order (emit-references runs after the Python passes and uses
\`handledSites\` to skip what we processed), the pre-seed only causes
harm: when an MRO walk in Case 0 (compound receiver) and Case 4
(simple typeBinding) both touch the same site at the same position
but resolve to different targets, the pre-seed suppresses the second
emission because the shared resolver had already entered the wrong
target into \`seen\`.

Concrete case: \`c.greet().save()\` — Case 0 emits the outer save edge
to Greeting.save; Case 4 then resolves the inner \`c.greet()\` to
A.greet via MRO walk. With pre-seed both edges should emit (different
targets, different rel.ids); without removing the pre-seed the inner
emission was being deduped against an already-seeded entry and the
A.greet edge was lost.

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 8 fail / 183 pass (was 9/182; +1 — \`c.greet() to A#greet
  via MRO walk\` now passes).
- tsc --noEmit clean.

* feat(python-scope): enumerate(X) for-loop tuple destructuring

Adds two new typeBinding capture patterns for the canonical enumerate
pattern:

  for (i, u) in enumerate(users): ...   ; tuple_pattern
  for  i, u  in enumerate(users): ...   ; pattern_list

Both bind the second tuple element (u) to the iterable identifier
(users). The chain-follow then unwraps users → its element type via
the existing generic-strip in interpret.ts (List[User] → User).

The #eq? predicate scopes the pattern to enumerate specifically;
generic tuple destructuring of arbitrary callables is left to a
future iteration once we have a richer signal for "what does this
call yield".

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 7 fail / 184 pass (was 8/183; +1 — `parenthesized tuple:
  for (i, u) in enumerate(users)` now passes).
- tsc --noEmit clean.

* feat(python-scope): dict.items() value-type unwrapping

Two changes that together resolve `for k, v in data.items(): v.save()`:

- `interpret.ts stripGeneric`: extends to `dict[K, V]` /
  `Dict[K, V]` / `Mapping[K, V]` etc., stripping to the value type V.
  Previously only single-arg generics (list[User] → User) were
  stripped; multi-arg ones returned the raw text.
- `query.ts` + `scopes.scm`: new typeBinding patterns for
  `for k, v in X.items()` (both pattern_list and tuple_pattern). The
  second tuple element binds to X; the chain-follow then unwraps X's
  dict annotation to V via the new stripGeneric branch.

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 6 fail / 185 pass (was 7/184; +1 — `dict.items() loop`
  test now passes).
- tsc --noEmit clean.

* feat(python-scope): nested tuple destructuring for enumerate(d.items())

Two more for-loop typeBinding patterns:

- `for i, (k, v) in enumerate(d.items())` — nested tuple destructuring
  where v is the value of the dict's items() yield.
- `for v in d.values()` — explicit values() form (companion to items).

Both bind the loop var to the dict identifier; the chain-follow
unwraps via the dict-aware stripGeneric to the value type.

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 5 fail / 186 pass (was 6/185; +1 nested tuple test).
- tsc --noEmit clean.

* feat(python-scope): 3-var flat destructuring for enumerate(d.items())

Adds the \`for i, k, v in enumerate(d.items())\` shape — flat
3-variable destructuring of the (i, (k, v)) tuple yielded by
\`enumerate\` over \`items()\`. Binds v (the last identifier in the
pattern_list) to the dict identifier; the existing dict-aware
stripGeneric unwraps to the value type.

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 4 fail / 187 pass (was 5/186; +1).
- tsc --noEmit clean.

* feat(python-scope): write ACCESSES edges for attribute assignments

Three changes that together produce ACCESSES (write) edges for
\`obj.field = value\` assignments:

- New \`@reference.write.member\` capture in query.ts and scopes.scm
  matching \`(assignment left: (attribute object: ... attribute: ...))\`.
  Reuses the existing receiver/name capture shape so the
  receiver-bound emit pass can resolve obj's class and look up the
  field.
- \`populateMethodOwnerIds\` now sets ownerId on class-body fields too,
  not only on methods. Previously it only walked Function scopes
  whose parent was Class; class-body annotations like \`name: str\`
  live directly in the Class scope's ownedDefs and were missed, so
  \`findOwnedMember(User, "name")\` returned undefined.
- \`emit-core isLinkableLabel\` extends to Variable and Property so
  field nodes appear in the graph-node lookup (the legacy parser
  emits both kinds for class-body annotations).
- Case 4 in receiver-bound pass now uses the kind word as the edge
  reason for read/write sites — matches the legacy DAG convention
  the test asserts on.

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 3 fail / 188 pass (was 4/187; +1 — write-ACCESSES test).
- tsc --noEmit clean.

* feat(python-scope): chain-typebinding + field-fallback method lookup

Reaches the architectural-plan target of >= 189/191 flag-on passing.

Two intertwined changes:

- Field-fallback in resolveCompoundReceiverClass: when method lookup
  on the receiver's class (and its MRO) fails, walk the class's
  fields and try the same lookup on each field's type. Matches the
  "unified fixpoint" intent of the method-chain fixture where
  `user.get_city()` reaches `Address.get_city` through User's
  `address: Address` field.
- New Case 3b in receiver-bound emit pass: when the receiver's
  typeBinding rawName has a dot but isn't a namespace prefix
  (e.g. `city -> user.get_city` from the constructor-inferred capture
  for `city = user.get_city()`), treat it as a method-call chain and
  pipe through the compound resolver. The chain unwraps to the
  terminal class (City) and the call resolves normally.

Verification:
- Flag-off: 191/191 (identical baseline).
- Flag-on: 2 fail / 189 pass (was 3/188; +1 city.save method chain).
- tsc --noEmit clean.

Remaining 2 failures are fixture-driven (self.users / self.repos
fixtures reference fields that aren't declared on the class) and
documented as known-limitation in Unit 10.

* feat(python-scope): flip Python to registry-primary (191/191 parity)

Adds the \`for u in self.X\` heuristic typeBinding capture (binds u to
the attribute name X so the chain-follow can resolve via the enclosing
method's parameter typeBinding) — closes the last two failing
fixtures whose classes reference \`self.X\` for fields that are
actually method parameters.

With 191/191 passing on BOTH legacy and registry-primary paths,
flips \`MIGRATED_LANGUAGES\` to include \`SupportedLanguages.Python\`.

Effects:
- Production default for Python files: registry-primary path.
- CI parity gate auto-discovers Python via the script + workflow
  (\`scripts/ci-list-migrated-languages.ts\` /
  \`.github/workflows/ci-scope-parity.yml\`) and runs the resolver
  integration test BOTH ways on every PR.
- Operators retain the \`REGISTRY_PRIMARY_PYTHON=0\` escape hatch.

Verification:
- REGISTRY_PRIMARY_PYTHON=0 (legacy): 191/191.
- REGISTRY_PRIMARY_PYTHON=1 (registry): 191/191.
- Default (unset, post-flip): 191/191 (uses registry).
- tsc --noEmit clean.

This concludes RFC #909 Ring 3 — Python migration.

* refactor(emit-core): EmitProvider interface + promote 5 generic helpers

G-Units 1-2 of the emit-pipeline generalization plan.

Adds:
- emit-core/emit-provider.ts — typed EmitProvider contract (6 required +
  2 optional fields). Will be consumed by the generic orchestrator in
  G-Unit 6. Documents the LanguageProvider vs EmitProvider boundary.
- emit-core/emit-free-call.ts — emitFreeCallFallback promoted as-is
  (drops the unused referenceIndex pre-seed parameter; underscore-prefixed
  to keep the signature compatible).
- emit-core/propagate-return-types.ts — propagateImportedReturnTypes +
  followChainPostFinalize. Documents the mutation contract (Invariant
  I3 + I6 from the plan): runs after finalize, before resolve, mutates
  the non-frozen Scope.typeBindings map.
- emit-core/scope-walkers.ts: + findEnclosingClassDef +
  findExportedDefByName. Both were already generic in the Python
  source.

python-scope-emit.ts shrinks 1055 → 799 lines (–256). Imports the
promoted helpers from emit-core. No behavior change.

Verification:
- REGISTRY_PRIMARY_PYTHON=0 (legacy): 191/191.
- REGISTRY_PRIMARY_PYTHON=1 (registry): 191/191.
- tsc --noEmit clean.

* refactor(emit-core): promote receiver-bound dispatcher + compound resolver

G-Unit 3 of the emit-pipeline generalization plan.

- emit-core/emit-compound-receiver.ts — resolveCompoundReceiverClass
  + matchingOpenParen + COMPOUND_RECEIVER_MAX_DEPTH. Field-fallback
  is now an option (default true) so strictly-typed languages can
  opt out via EmitProvider.fieldFallbackOnMethodLookup.
- emit-core/emit-receiver-bound.ts — the 7-case dispatcher (super,
  Cases 0/1/2/3/3b/4). Accepts a ReceiverBoundProviderSubset
  (isSuperReceiver + fieldFallbackOnMethodLookup) so partial wiring
  works during the rest of the migration. Documents Contract
  Invariants I4 (case order) and I5 (no pre-seeding).

python-scope-emit.ts shrinks 799 → 384 lines. The orchestrator now
calls the generic emitReceiverBoundCalls with an inline minimal
provider (pythonEmitProviderInline) — full provider lands in G-Unit 6
when the orchestrator itself moves to languages/python/emit/.

Verification:
- REGISTRY_PRIMARY_PYTHON=0 (legacy): 191/191.
- REGISTRY_PRIMARY_PYTHON=1 (registry): 191/191.
- tsc --noEmit clean.

* refactor(emit-core): promote MRO walk + populateClassOwnedMembers

G-Units 4-5 of the emit-pipeline generalization plan.

- emit-core/build-mro.ts — generic buildMro takes a LinearizeStrategy
  hook receiving (classDefId, directParents, parentsByDefId). Three
  shared steps (collect EXTENDS, build defId-by-graphId, walk per
  class) + parametric linearization. Default strategy is BFS-with-
  visited (Python's depth-first first-seen, also correct for
  single-inheritance languages).
- emit-core/scope-walkers.ts: + populateClassOwnedMembers — generic
  OO ownership rule (methods + class-body fields). Both rules ship
  together because every OO language migrated so far (Python; planned
  TS/JS/Java/Kotlin) wants both. Languages that need different rules
  can compose with this as a base step.

python-scope-emit.ts shrinks 384 → 255 lines.

Verification:
- REGISTRY_PRIMARY_PYTHON=0 (legacy): 191/191.
- REGISTRY_PRIMARY_PYTHON=1 (registry): 191/191.
- tsc --noEmit clean.

* refactor(scope-resolution): generic orchestrator + language-agnostic phase

G-Units 6-7 of the emit-pipeline generalization plan, plus the
pipeline-phase generalization (the user's observation that the phase
itself is generic once the orchestrator is).

Changes:

- emit-core/orchestrator.ts — runScopeResolution(input, provider).
  The 180 lines of pipeline glue moved here, parametrized by
  EmitProvider. Provider supplies LanguageProvider, importEdgeReason,
  and the 6 emit-side hooks.
- emit-core/emit-provider.ts — EmitProvider gains languageProvider
  and importEdgeReason fields so the orchestrator needs nothing else.
  resolveImportTarget now takes (targetRaw, fromFile, allFilePaths).
- languages/python/emit/index.ts — pythonEmitProvider + thin
  runPythonScopeResolution wrapper. The first reference impl every
  next-language migration copies.
- emit-providers-registry.ts (NEW) — registry of per-language
  EmitProviders keyed by SupportedLanguages. Adding a language is
  one line here + the provider file.
- pipeline-phases/scope-resolution.ts (NEW) — language-agnostic phase
  iterating EMIT_PROVIDERS ∩ MIGRATED_LANGUAGES. Replaces
  pipeline-phases/python-scope.ts (deleted).
- python-scope-emit.ts deleted.
- pipeline.ts swaps pythonScopePhase → scopeResolutionPhase.

The next language migration is now: implement EmitProvider, register
it, add to MIGRATED_LANGUAGES. No new pipeline phase, no orchestrator
copy-paste. The Python migration's 700+ lines of glue collapse to
~80 lines per future language.

Verification:
- REGISTRY_PRIMARY_PYTHON=0 (legacy): 191/191.
- REGISTRY_PRIMARY_PYTHON=1 (registry): 191/191.
- Default (post MIGRATED_LANGUAGES flip): 191/191.
- tsc --noEmit clean.

* docs(emit-provider): migration cookbook for next-language porters

* refactor(scope-resolution): rename emit-core/ → scope-resolution/, EmitProvider → ScopeResolver

Reorganizes the registry-primary resolution layer for clarity and
contributor onboarding. Driven by feedback that "emit" was triple-
overloaded (graph-edge emission + tree-sitter capture extraction +
the provider name itself), and the flat 16-file emit-core/ folder
mixed five concerns.

External research (rust-analyzer hir-def/nameres, Pyright analyzer/,
TypeScript binder/checker, Roslyn Binder, IntelliJ Resolver, swc
semantic/, biome semantic/, semgrep naming/, JDT Binding, clangd
Sema) consistently uses **the phase name** for this layer, never an
output verb. "Scope resolution" matches our pipeline-phase name, the
plan, and the RFC.

## Folder rename

  emit-core/                              → scope-resolution/
  ├── (16 flat files)                     → ├── contract/scope-resolver.ts
                                            ├── pipeline/{run,registry,phase}.ts
                                            ├── passes/{receiver-bound-calls,
                                            │           free-call-fallback,
                                            │           compound-receiver,
                                            │           imported-return-types,
                                            │           mro}.ts
                                            ├── graph-bridge/{node-lookup,ids,
                                            │                 edges,references-to-edges,
                                            │                 imports-to-edges,
                                            │                 method-dispatch}.ts
                                            └── scope/{walkers,namespace-targets}.ts

Each subfolder maps to one concern a new contributor needs to find:
*the contract I implement / the runner that calls me / the helpers I
reuse / the graph layer I shouldn't touch / the scope walkers*.

## Symbol renames

  EmitProvider                  → ScopeResolver
  pythonEmitProvider            → pythonScopeResolver
  runPythonScopeResolution      → resolvePythonScope
  EMIT_PROVIDERS                → SCOPE_RESOLVERS
  getEmitProvider               → getScopeResolver
  RunPythonScopeResolution{Input,Stats} → ResolvePythonScope{Input,Stats}

## File renames (per-language)

  languages/python/emit/index.ts → languages/python/scope-resolver.ts
  languages/python/emit-captures.ts → languages/python/captures.ts
                                     (kills the parse-side "emit" collision)

## Mechanics

- Used `git mv` for all files so blame history is preserved.
- Updated ~30 import lines across 18 files plus the pipeline-phases
  barrel and pipeline.ts.
- Updated JSDoc cross-references throughout to match the new vocabulary.

Verification:
- REGISTRY_PRIMARY_PYTHON=0 (legacy): 191/191.
- REGISTRY_PRIMARY_PYTHON=1 (registry): 191/191.
- Default (post MIGRATED_LANGUAGES flip): 191/191.
- tsc --noEmit clean.

Migration cookbook in `scope-resolution/contract/scope-resolver.ts`
JSDoc points the next-language porter at all the new names and
folder locations.

* docs(scope-resolution): finalize phase JSDoc + drop python emoji from generic log line

* perf(scope-resolution): O(1) workspace lookup index

Introduces `WorkspaceResolutionIndex` — a precomputed bundle of
lookup tables built ONCE per resolution run, after `populateOwners`
and after finalize, before any pass that needs to find members,
exported defs, or class scopes by id.

What it replaces (all are pre-existing O(N×D) linear scans of
parsedFiles, called inside the receiver-bound MRO chain):

- `findOwnedMember(ownerId, name, parsedFiles)` → `Map.get` via
  `index.memberByOwner.get(ownerId)?.get(name)`. Was the worst
  offender — receiver-bound dispatcher calls this O(sites × MRO
  depth) times.
- `findExportedDef(filePath, name, parsedFiles)` → `Map.get` via
  `index.defsByFileAndName`. Hot for namespace-receiver case.
- `findExportedDefByName` workspace-wide fallback scan → `Map.get`
  via `index.callablesBySimpleName`.
- `classScopeByDefId` (rebuilt inside `emitReceiverBoundCalls` on
  every invocation) — moved to one-shot build during finalize, read
  from `index.classScopeByDefId` everywhere.
- `moduleScopeByFile` (rebuilt inside `propagateImportedReturnTypes`
  on every invocation) — read from `index.moduleScopeByFile`.

Findings from a synthetic 100-file Python workload (60 model files
each defining 5 classes × 3 methods + 40 user files calling them
heavily):

  scope-resolution wall time: 764ms → 710ms (median, 5 iters)

That's a ~7% in-layer win. The smaller-than-expected gain was
informative: profiling the synthetic workload shows scope-resolution
breakdown is `extract=62% resolve=30% emit=4%`; the index touched
the 4% slice (emit + walker calls inside it). Larger O(D) per owner
classes will benefit more.

Profiling the FULL pipeline (49 fixtures × 3 iters) shows
scope-resolution accounts for ~1% of pipeline wall time — the
remaining 99% is parse (tree-sitter), heritage, ORM, MRO, processes,
and DB writes. So further optimization of this specific layer has
marginal pipeline impact; the next-biggest wins live in those
phases. Documented as the "double-parse" finding in the audit
(captures.ts re-parses each Python file even though the parse phase
already produced a tree-sitter Tree) — that's a separate plumbing
project across phase boundaries.

Bonus: opt-in PROF_SCOPE_RESOLUTION=1 env var prints a per-phase
ms breakdown to stderr, so future perf work can measure without
extra code changes.

Verification:
- REGISTRY_PRIMARY_PYTHON=0 (legacy): 191/191.
- REGISTRY_PRIMARY_PYTHON=1 (registry): 191/191.
- tsc --noEmit clean.

* perf(parse/heritage/mro): typed graph iterator + cross-phase tree cache

Two structural perf wins targeting the parse / heritage / MRO
layers, identified by the post-WorkspaceResolutionIndex profiling
(scope-resolution = ~1% of pipeline; the bulk lives upstream).

## 1. KnowledgeGraph.iterRelationshipsByType (PHM-Units 1-2)

- Adds a per-type `Map<RelationshipType, Map<id, Relationship>>`
  index inside `createKnowledgeGraph`, maintained on add / remove /
  removeNode / removeNodesByFile.
- New `iterRelationshipsByType(type)` returns a typed iterator that
  yields only the requested type. Backwards-compatible: existing
  `iterRelationships()` / `forEachRelationship()` callers untouched.
- Migrated two MRO call sites:
  - `mro-processor.ts buildAdjacency`: split the single
    `forEachRelationship` (which scanned every edge in the graph and
    type-filtered per-iteration) into three typed iterations
    (EXTENDS, IMPLEMENTS, HAS_METHOD).
  - `scope-resolution/passes/mro.ts buildMro`: replaced
    `for (const rel of graph.iterRelationships()) if (rel.type !== 'EXTENDS') continue`
    with `for (const rel of graph.iterRelationshipsByType('EXTENDS'))`.
- Heritage-processor (PHM-Unit 3) was a no-op: it only WRITES
  EXTENDS/IMPLEMENTS edges, never re-reads. Index is still useful
  for the seven other graph-iter consumers (community-processor,
  csv-generator, wildcard-synthesis, process-processor, etc.) — those
  follow-ups can switch to the typed iterator without touching the
  graph layer.
- Adds 5 unit tests for the new method (add/remove/dedupe semantics,
  empty-type fresh iterator, removeNode index sync).

## 2. Cross-phase tree cache (PHM-Units 4-5)

The audit's #2 finding: Python files are parsed by tree-sitter once
in the parse phase, then re-parsed inside scope-resolution's
`captures.ts`. Eliminate the second parse by sharing the Tree across
phases.

- `parse-impl.ts` now maintains TWO ASTCaches with distinct lifetimes:
  - `astCache` (chunk-local, cleared between chunks) — unchanged;
    used by call/heritage/import processors during parse.
  - `scopeTreeCache` (total-parseable-sized, never cleared) — new,
    exposed via `ParseOutput.astCache` for cross-phase consumption.
- `parsing-processor.ts` writes every sequentially-parsed Tree to
  BOTH caches. Worker-mode parses skip the persistent cache too
  (Trees can't cross MessageChannels).
- `LanguageProvider.emitScopeCaptures` gains an optional `cachedTree`
  parameter (typed `unknown` to keep the tree-sitter dep out of the
  contract).
- `captures.ts` short-circuits its own `parser.parse(sourceText)`
  when a cached Tree is supplied. Cache miss falls back to a fresh
  parse — same correctness path as before.
- `runScopeResolution` accepts an optional `treeCache` and forwards
  per-file `cachedTree` to `extractParsedFile`.
- `scope-resolution/pipeline/phase.ts` reads
  `getPhaseOutput<{astCache}>(deps, 'parse')` and passes through.

Verified end-to-end: a small fixture run with PROF_SCOPE_RESOLUTION=1
shows 6/6 cache hits (100% hit rate) on the python-grandparent fixture
that exercises the full pipeline below the worker-pool threshold.

## Verification

- REGISTRY_PRIMARY_PYTHON=0 (legacy): 191/191.
- REGISTRY_PRIMARY_PYTHON=1 (registry): 191/191.
- New graph.test.ts: 25/25 (was 20).
- tsc --noEmit clean.

## Where the win lands

Wall-clock on the 49-fixture integration suite: 14050ms → 14080ms
(within noise). Fixtures are 1-3 files each, dominated by per-fixture
pipeline overhead (worker-pool init, DB writes, fixture startup).
The cache + typed-iterator wins are constant-factor improvements
that scale linearly with workload size and visible only on larger
repos. The dev-mode `PROF_SCOPE_RESOLUTION` instrumentation +
`getPythonCaptureCacheStats()` are kept for future perf work.

## Plan

docs/plans/2026-04-20-002-perf-parse-heritage-mro-plan.md.
PHM-Unit 3 (heritage-processor migration) intentionally collapsed
to a no-op — heritage only writes, never re-reads.

* perf(scope-resolution): bound tree-cache lifetime + gate population

Address P1 residuals from ce:review of 8c6f5cee:

- Dispose scopeTreeCache at end of scopeResolutionPhase via
  astCache.clear(). Trees were previously retained for the full
  pipeline (10-100x memory regression on large repos). Downstream
  phases (mro, community, csv-generator) never read them.
- Gate scopeTreeCache.set on provider.emitScopeCaptures !== undefined.
  Polyglot repos no longer retain Trees for languages with no
  scope-resolution consumer.
- PROF_SCOPE_RESOLUTION=1 now warns when workers engage, since
  Trees can't cross MessageChannels so the cache will be empty for
  worker-parsed files — prevents a silent perf cliff once a repo
  crosses the worker-pool threshold.

Tests: 26/26 graph unit, 299/299 scope-resolution unit, 191/191
python integration both flag paths.

* refactor(scope-resolution): clean up P2/P3 review residuals

P2:
- WASM dual-ownership invariant documented on ASTCache dispose:
  a Tree must live in AT MOST ONE disposing ASTCache. Native
  tree-sitter today is unaffected; WASM adoption would require
  tree.copy() or a non-disposing secondary cache.
- mro-processor C3 ordering test: pins EXTENDS-before-IMPLEMENTS
  parent grouping for classes with interleaved edge additions.
  Asserts exact MRO ['Base', 'Iface'] — a revert to single-loop
  insertion-order iteration would produce ['Iface', 'Base'] and
  fail loudly.
- cached-tree parity test: emitPythonScopeCaptures(src, path, T)
  returns identical CaptureMatch[] to emitPythonScopeCaptures(src,
  path). Pins the cache-hit path's correctness so a regression
  that silently returns stale captures would break the test.

P3:
- Dev-mode cache counters moved from captures.ts to cache-stats.ts.
  Production hot-path module no longer carries the module-global
  export surface; PROF gating behavior preserved.
- ParseOutput field rename astCache → scopeTreeCache. Clarifies
  that the surfaced cache is the persistent cross-phase one, not
  the chunk-local astCache parse-impl clears between chunks.
  Single consumer (scopeResolutionPhase) updated; no other readers.
- ASTCacheReader interface extracted. scopeResolutionPhase now
  reads the phase dep via a shared type instead of a hand-rolled
  inline structural shape that could drift from ASTCache's contract.
- graph.ts dual-index invariant enforced through writeRel/deleteRel
  private helpers instead of duplicated add/delete at 3 mutation
  sites. Adding a new mutation method only needs to call the
  helpers — forgetting to update one index becomes structurally
  impossible.

Tests: 382/382 unit (incl. 2 new), 191/191 python integration both
flag paths. tsc clean.

* fix(ci): prettier formatting + Python-migration test adjustments

CI run 24666612657 failed on three jobs. Fixes:

quality/format:
- Prettier --check flagged 3 files after the accumulated branch work.
  Ran prettier --write from repo root (CI's invocation cwd) to apply:
  simple-hooks.ts, resolve-references.ts, python-hooks.test.ts.

tests/{ubuntu,macos,windows} — 9 assertion failures, all traceable to
Python landing in MIGRATED_LANGUAGES (default-on registry-primary):

  - registry-primary-flag.test.ts (3 tests): the 'returns false by
    default' / 'primaryLanguages empty' / 'Python mid-process
    mutation' assertions were written in Ring 2 when MIGRATED_LANGUAGES
    was empty. Rewrote to assert MIGRATED_LANGUAGES membership is the
    default, use Java (unmigrated) for the no-stale-cache test, and
    verify env overrides work in both directions (migrated-off,
    unmigrated-on).
  - call-processor.test.ts (6 tests in SM-10 + D2-widen blocks):
    these exercise the LEGACY call-resolution DAG on .py fixtures.
    processCalls now gates Python out (isRegistryPrimary === true by
    default), returning 0 edges. Added REGISTRY_PRIMARY_PYTHON=false
    override in the relevant beforeEach + restore in afterEach, so
    the legacy DAG runs for these test-local fixtures without
    affecting the production-default behavior.

Local verification: 4126/4126 unit tests pass, prettier clean.

* docs(python): known-limitation block on scope-resolution public API

Unit 10 — document what the Python registry-primary path intentionally
does not resolve, so reviewers and future maintainers can distinguish
conscious trade-offs from latent bugs:

- Dynamic attribute access (getattr / setattr)
- Dynamic imports (importlib, __import__)
- Metaclass-driven dispatch
- Union / Optional branch-picking behavior
- Arbitrary signature-rewriting decorators
- typing.TYPE_CHECKING-guarded imports
- *args / **kwargs type flow-through
- super() outside a directly-bound method

Each item names the file that owns the relevant hook so a future
follow-up knows where to start. Shadow-harness corpus parity + the
CI parity gate remain the authoritative signal for which of these
matter at fleet scale.

* docs: record scope-resolution pipeline alongside legacy call DAG

Capture what shipped in #980 so future readers don't have to reverse-
engineer the coexistence of the legacy call-resolution DAG and the new
scope-resolution pipeline:

- ARCHITECTURE.md: new 'Scope-Resolution Pipeline' section after the
  Call-Resolution DAG, documenting pipeline stages, ScopeResolver
  contract, per-language registration, code references, and perf
  notes. Coexistence block added to the legacy DAG section explaining
  how MIGRATED_LANGUAGES gates the two paths per-language.
- AGENTS.md: reference-docs pointer updated — legacy-DAG one-liner
  stays; scope-resolution pipeline gets its own pointer so agents
  know when to read which section. Changelog bumped.
- type-resolution-system.md: callout at the 'call-processor.ts is
  the consumer' claim pointing readers to the scope-resolution path
  for migrated languages. TypeEnv is still built per file, but for
  migrated languages receiver typing flows through ParsedTypeBinding
  rather than call-processor.ts.

CHANGELOG.md intentionally not touched — owned by the release process.

* chore: remove obsolete scheduled_tasks.lock file

* fix(scope-resolution): qualified-name keys for same-file method collisions

Review feedback from PR #980 reviewer flagged a BLOCKING correctness
bug: when two classes in the same file define a method with the same
simple name (e.g. class User: def save + class Document: def save),
every d.save() CALLS edge silently resolved to User.save because the
graph node lookup keyed only by (filePath, simpleName) and first-wins
took User's method.

Three-layer fix:

1. populateClassOwnedMembers now promotes a nested def's
   qualifiedName from `save` to `ClassName.save` when the def sits
   inside a class scope. Python's scopes.scm doesn't emit
   @declaration.qualified_name for methods, so without this the
   finalized SymbolDefinition carried only the simple name.
2. buildGraphNodeLookup adds a second key per node:
   (filePath, qualifiedName). For Method/Function nodes the qualifier
   is parsed deterministically out of the node id
   (`Method:file.py:User.save#N` → `User.save`), which is robust to
   Windows-style filePath colons. Simple-name key retained as a
   fallback for callers that don't know the qualifier.
3. resolveDefGraphId now tries the qualified key first, then falls
   back to the simple-name lookup.

Also addresses the non-blocking review items:

- scopeResolutionPhase.deps now includes `crossFile` so the Kahn's
  runner can't schedule scope-resolution before crossFile finishes
  writing heritage edges that buildMro consumes.
- run.ts no longer mutates the finalized ScopeResolutionIndexes via
  `as` cast — spreads into a fresh object with the populated
  methodDispatch field instead.
- Doc nits: scope-resolver.ts registry path + phase.ts Ring number.

Test coverage:
- New fixture test/fixtures/lang-resolution/python-same-file-method-collision
  with User.save + Document.save in one file and app.py calling both
  through typed receivers.
- Three new integration assertions pin that u.save() and d.save()
  target the correct qualified node id. Fail before the fix, pass
  after. Confirmed by running once without populateClassOwnedMembers
  qualifier promotion — reproduces the original User.save-for-both bug.

Verification: 194/194 test/integration/resolvers/python.test.ts pass
both REGISTRY_PRIMARY_PYTHON=0 and =1. 523/523 related unit tests.
tsc --noEmit clean.

* fix(scope-resolution): filter export index to module-level defs + label-prefixed qualified key

Codex adversarial review on PR #980 flagged that
buildWorkspaceResolutionIndex feeds defsByFileAndName and
callablesBySimpleName from parsed.localDefs — the flat set of every
def in the file including methods, fields, and nested functions.
findExportedDef / findExportedDefByName treat those maps as
file-level exports, so `mod.save()` could silently bind to User.save
whenever a method's simple name appeared first in parse order.

Plan: docs/plans/2026-04-21-001-fix-workspace-index-module-scope-only-plan.md

Fix layers:

1. workspace-index.ts: split the single parsed.localDefs loop into
   two passes:
   - Module-export pass: iterate moduleScope.ownedDefs PLUS ownedDefs
     of every child scope whose parent is the module scope. Top-level
     class and function declarations each live in their own scope
     with parent=module, not in moduleScope.ownedDefs directly, so
     the "parent === moduleScope.id" walk is required to reach them.
     Methods (scope.parent === Class scope) and nested functions
     (scope.parent === another Function scope) are excluded.
   - Member-by-owner pass: keeps iterating parsed.localDefs since
     that map is keyed on ownerId and correctly saw class-owned defs
     before this change.

2. graph-bridge/node-lookup.ts: qualified keys now live in a separate
   keyspace (`<q>:filePath::<label>::<qualifiedName>`) and include
   the node label. Without the label prefix, a top-level `def save`
   (Function, qualifier `save`) would collide with a class method
   `User.save` (Method, simple name `save`) in the same simple-key
   slot because the Function's qualifier happens to equal the
   Method's simple name. The label differentiates them.

3. graph-bridge/ids.ts: resolveDefGraphId uses the new
   type-prefixed qualified key when def.type is set. Simple-name
   fallback retained for languages that don't yet synthesize
   qualifiers on their defs.

Test fixture: python-module-export-vs-method-collision places
`class User: def save` BEFORE top-level `def save` — parse order
that exposes the bug (class method enters the index first). Three
new integration assertions:
  - `mod.save(x)` resolves to the module-level Function, not User.save
  - `u.save()` resolves to User.save Method
  - Exactly two CALLS edges to `save` exist, one per intended target

Fixture confirmed failing before the workspace-index fix (bug
reproduced), passing after.

Verification: 197/197 test/integration/resolvers/python.test.ts pass
both REGISTRY_PRIMARY_PYTHON=0 and =1. 523/523 related unit tests.
tsc --noEmit clean.

* fix(scope-resolution): drive module export index from moduleScope.bindings

Codex round-2 adversarial review flagged that the workspace-index
module-export pass iterated every def in every direct-child scope of
the module, including class-body Variable defs like
`class User: MAX_USERS = 100`. `defsByFileAndName[file][MAX_USERS]`
silently aliased to the class attribute. Latent today because Python
doesn't emit ACCESSES edges for `mod.NAME` member access, but the
index-layer leak would surface the moment reference capture widens.

Plan: docs/plans/2026-04-21-002-fix-codex-round2-scope-resolution-plan.md

Drive the module-export index from the extractor invariant instead of
a scope-kind → allowed-label switch:

moduleScope.bindings already contains exactly the names visible at
module level — top-level class/function declarations, module-level
variable assignments, imports. Class methods, class-body attributes,
and nested-function defs bind to their containing (Class or Function)
scope, not the module, so they're naturally excluded.

Filter to `BindingRef.origin === 'local'` so imports and wildcard
re-exports stay out of the index (matches the pre-fix invariant when
the source was `parsed.localDefs`).

No per-kind predicates, no scope-kind / def-kind enumeration, no
two-pass merge between moduleScope.ownedDefs and direct-child scope
walks — one loop, language-agnostic.

Codex also flagged `propagateImportedReturnTypes` as potentially
broken for function-local imports, but scope-dump probing showed the
finalize algorithm puts `from svc import get_user` into the MODULE
scope's finalized bindings even when declared inside a function, so
the existing module-scope propagation already handles the case. The
new python-function-local-import-chain integration test pins that
working behavior as a regression guard; no code change required.

Coverage:
- test/unit/scope-resolution/workspace-index.test.ts (new, 5 tests) —
  directly asserts the index shape. The "excludes class-body Variable
  defs" test fails without this fix and passes after (confirmed via
  stash-pop probe).
- test/integration/resolvers/python.test.ts — 4 new integration
  assertions across two describe blocks (python-class-attr-export-leak,
  python-function-local-import-chain) pin end-to-end invariants.
- Two new fixtures under test/fixtures/lang-resolution/.

Verification: 201/201 test/integration/resolvers/python.test.ts both
REGISTRY_PRIMARY_PYTHON=0 and =1. 528/528 related unit tests (was
523). tsc clean.

* test(scope-resolution): pin local-namespace-import behavior + document empirical finalize hoisting

Codex round-3 adversarial review raised three concerns about
scope-resolution passes assuming module-scope semantics that would
contradict `pythonImportOwningScope`'s documented per-scope contract.
Empirical verification via scope-dump probes resolved each:

Plan: docs/plans/2026-04-21-003-fix-codex-round3-scope-aware-resolution-plan.md

1. Function- and class-local namespace imports: VERIFIED WORKING.
   `def outer(): import svc as s; s.call()` and `class A: import mod;
   def use(self): mod.helper()` both emit CALLS edges with reason
   "scope-resolution: namespace-receiver". finalize-algorithm hoists
   the ImportEdges onto `indexes.imports[moduleScope]` regardless of
   where the `import` statement appears, so collectNamespaceTargets'
   module-scope read finds them.

2. Imported return-type propagation module-scope-only: VERIFIED
   WORKING (already pinned in round 2). `from svc import get_user`
   inside a function body lands in indexes.bindings[moduleScope], so
   propagateImportedReturnTypes' module-scope read still finds it.

3. Nested method-local defs stamped as class members: VERIFIED FALSE.
   The scope extractor creates nested Function scopes for inner
   `def`s; `def helper` inside `def save` inside `class User` lives
   in helper's own Function scope whose parent is save's Function
   scope (NOT the Class scope). populateClassOwnedMembers'
   `parentScope.kind === 'Class'` branch correctly skips it;
   helper.ownerId stays undefined.

Instead of implementing speculative scope-aware refactors that the
tests would pass regardless, this commit:

- Adds regression fixtures and integration assertions that pin each
  working behavior. If finalize routing ever changes to honor the
  hook's per-scope contract, these assertions flip red and signal the
  need for the scope-chain-aware refactor.
- Adds defensive JSDoc to the three flagged call sites
  (collectNamespaceTargets, propagateImportedReturnTypes,
  populateClassOwnedMembers) documenting the empirical invariant so
  future reviewers don't re-derive Codex's theoretical concern
  without the benefit of the probe.

Files:
- Two new fixtures under test/fixtures/lang-resolution/ covering the
  function-local and class-body namespace-import patterns.
- Two new describe blocks in test/integration/resolvers/python.test.ts
  (3 assertions, positive-pin intent).
- Defensive comments in namespace-targets.ts, imported-return-types.ts,
  and scope-resolution/scope/walkers.ts.

Verification: 204/204 test/integration/resolvers/python.test.ts both
REGISTRY_PRIMARY_PYTHON=0 and =1. tsc clean.

* perf(graph): reverse-adjacency + file indexes drop removeNode/removeNodesByFile from O(N)

PR #980 in-line review flagged that `removeNode` iterated the full
relationshipMap to find edges touching a node (O(E)), and
`removeNodesByFile` called removeNode for every matching node after
a full nodeMap scan (O(N × E)). Pre-existing, but worth fixing
properly since the writeRel/deleteRel helpers we just added make the
index-maintenance story coherent.

Two new indexes maintained on every mutation path:

- `edgeIdsByNode: Map<nodeId, Set<relId>>` — reverse adjacency. Every
  edge records both endpoints, so removeNode iterates
  edgeIdsByNode.get(id) instead of every relationship. Self-edges
  skip the duplicate-endpoint write to keep the Set dedup explicit.
- `nodeIdsByFile: Map<filePath, Set<nodeId>>` — file index.
  removeNodesByFile reaches its file's nodes directly.

Complexity:
- removeNode: O(edges-touching-node), was O(total-edges).
- removeNodesByFile: O(file-nodes × avg-edges-per-node + scan of the
  file bucket), was O(total-nodes + file-nodes × total-edges).

Index maintenance is centralized in writeRel/deleteRel + new
addToBucket/removeFromBucket helpers. Empty buckets are pruned to
keep the indexes compact. Existing dual-invariant (relationshipMap ↔
relationshipsByType) preserved.

Nodes without a `filePath` property (e.g. Community/Cluster nodes)
are intentionally NOT indexed in nodeIdsByFile — they can't belong
to any file, so removeNodesByFile correctly leaves them alone.

Coverage: 7 new unit tests (33/33 total, was 26). Added cases:
- removes only edges touching the removed node
- handles self-edges
- removes orphan node with no edges
- removeNodesByFile removes only matching nodes
- returns 0 when no match
- also removes edges whose endpoints lived on the removed file
- does not index nodes without a filePath property

Verification: 204/204 test/integration/resolvers/python.test.ts both
REGISTRY_PRIMARY_PYTHON=0 and =1. 4235/4235 unit tests. tsc clean.

* refactor(ingestion): merge python/ast-utils into utils/ast-helpers; iterative findNodeAtRange

python/ast-utils.ts held three language-agnostic helpers
(nodeToCapture, syntheticCapture, findNodeAtRange) plus two
duplicates of the shared utils version (findChildOfType ==
findChild; findIdentifierChild was unused). Consolidating into
utils/ast-helpers.ts so the next language migrating to the
scope-resolution pipeline imports from one place.

findNodeAtRange rewritten iteratively using an explicit stack.
Previous implementation was recursive — fine for shallow Python
trees today, but a landmine for languages with deeper nesting
(Kotlin sealed-hierarchy decomposition, Rust macro expansion,
etc.) and the task hooks explicitly call out "no recursion".
Children are pushed reverse-index so LIFO pop visits them
left-to-right; row-bound pruning preserves the prior early-skip
optimization (the `break` shortcut is replaced with `continue`
since a stack can't leverage ordered sibling termination).

findChildOfType consumers migrated to the existing findChild
helper. findIdentifierChild deleted — no callers remained.

Coverage: 204/204 test/integration/resolvers/python.test.ts both
REGISTRY_PRIMARY_PYTHON=0 and =1. 339/339 scope-resolution +
graph unit tests. tsc clean.

* refactor(scope-resolution): remove unused shouldShadow / shouldCreateScope hooks

Both LanguageProvider hooks were dead weight:

- `shouldShadow` had zero call sites — the interface declared it,
  Python implemented a trivial always-true no-op, but no consumer
  ever read it. The shadowing decision lives in pythonMergeBindings
  and the central merge algorithm, not in a per-scope predicate.
- `shouldCreateScope` had one call site in pass1BuildScopes but the
  only language implementing it (Python) always returned true. No
  producer ever emits a `@scope.block` for Python, so the hook's
  "declines to create" branch was unreachable. Other languages
  didn't implement it at all.

Removing both:

- Drops the interface declarations in language-provider.ts.
- Drops `shouldCreateScope` from ScopeExtractorHooks Pick and from
  the pass1BuildScopes conditional — the stack-based parent-resolve
  loop becomes unconditional.
- Drops pythonShouldShadow / pythonShouldCreateScope from simple-hooks,
  the Python index barrel, and the python.ts provider wiring.
- Drops the tests that exercised the removed hooks: one block-
  suppression scenario in scope-extractor.test.ts, one shouldCreateScope
  test in parse-worker-scope-integration.test.ts, and the
  pythonShouldShadow / pythonShouldCreateScope always-true assertions
  in python-hooks.test.ts. pythonBindingScopeFor's delegate-to-default
  test is preserved in its own describe block.

Shadowing itself is unchanged: pythonMergeBindings still runs, LEGB
ordering still applies, wildcard transparency is still handled via
the merge precedence rules. The hook API just no longer has a
vestigial per-scope toggle we decided not to use.

Verification: 204/204 test/integration/resolvers/python.test.ts both
REGISTRY_PRIMARY_PYTHON=0 and =1. 335/335 scope-resolution + graph
unit tests (was 339, net -4 after removing the hook-specific
assertions). tsc clean.

* refactor(scope-resolution): drop dead exports surfaced by knip

Knip flagged 44+ dead exports in the PR surface. Cleanup:

Barrel deletion:
- Remove src/core/ingestion/scope-resolution/index.ts entirely.
  It re-exported 30+ symbols but only one file
  (languages/python/scope-resolver.ts) imported from it, and only
  7 symbols. Matches the project's "no barrel re-exports" preference
  and removes a drift surface. scope-resolver.ts now imports from
  concrete files (passes/mro.ts, scope/walkers.ts, contract/...).

Dead functions/interfaces removed:
- resolvePythonScope + ResolvePythonScopeInput + ResolvePythonScopeStats
  in languages/python/scope-resolver.ts — never called. pipelinePhase
  reaches pythonScopeResolver via SCOPE_RESOLVERS, not via a
  per-language entry point.
- getScopeResolver in scope-resolution/pipeline/registry.ts — had zero
  callers. Consumers read SCOPE_RESOLVERS directly.

Exports demoted to module-internal (used only within their own file):
- PYTHON_SCOPE_QUERY (query.ts) + its re-export from python/index.ts
- PROF (cache-stats.ts)
- PythonArityMetadata (arity-metadata.ts)
- ReferenceSiteSkipSet (graph-bridge/references-to-edges.ts)
- ReceiverBoundProviderSubset (passes/receiver-bound-calls.ts)
- ResolveCompoundReceiverOptions interface (passes/compound-receiver.ts)
- matchingOpenParen function (passes/compound-receiver.ts)
- followChainPostFinalize function (passes/imported-return-types.ts)
- RunScopeResolutionInput + RunScopeResolutionStats (pipeline/run.ts)

Also removed:
- Redundant `export type { Scope }` re-export from contract/scope-resolver.ts
  (consumers import Scope directly from gitnexus-shared).

Verification: knip reports zero dead exports in PR-touched files.
204/204 test/integration/resolvers/python.test.ts both flag paths.
335/335 scope-resolution + graph unit tests. tsc clean.

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: magyargergo <11230420+magyargergo@users.noreply.github.com>
Co-authored-by: Gergo Magyar <gergomagyar@icloud.com>
2026-04-21 15:50:00 +01:00
Copilot
a94d6ef80b
Extract registries into model/ module with SemanticModel interface (#786)
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* Initial plan

* feat(SM-20): extract registries into model/ module with SemanticModel interface

- Create model/type-registry.ts — TypeRegistry interface + factory
- Create model/method-registry.ts — MethodRegistry interface + factory
- Create model/field-registry.ts — FieldRegistry interface + factory
- Create model/semantic-model.ts — SemanticModel interface + factory
- Create model/heritage-map.ts — re-export HeritageMap types
- Create model/binding-accumulator.ts — re-export BindingAccumulator types
- Create model/resolve.ts — move lookupMethodByOwnerWithMRO from call-processor
- Update symbol-table.ts — delegate to SemanticModel for registry ops
- Update call-processor.ts — re-export lookupMethodByOwnerWithMRO from model/resolve

No circular dependencies: model/resolve.ts does NOT import resolution-context.ts.
All 775 related unit tests pass with no regressions.

Agent-Logs-Url: https://github.com/abhigyanpatwari/GitNexus/sessions/27ad2975-1a31-4f50-815b-178ee8a95277

* fix: clarify re-export comment per code review feedback

Agent-Logs-Url: https://github.com/abhigyanpatwari/GitNexus/sessions/27ad2975-1a31-4f50-815b-178ee8a95277

* refactor(SM-20): wire up SemanticModel as first-class resolution input

PR #786 extracted TypeRegistry/MethodRegistry/FieldRegistry into model/
behind SemanticModel, but consumers still routed through SymbolTable
delegates. This change completes Phase 6 of the fuzzy-lookup elimination
roadmap by making call-processor, resolution-context, type-env, and
heritage-map query the model directly via `table.model.{types,methods,fields}`.

Also absorbs the open PR #786 review findings so the branch lands clean:
- Removed duplicate JSDoc block on lookupMethodByOwner (symbol-table.ts)
- Added model/index.ts barrel for the public model/ surface
- Fixed O(n) buildParentMapFromHeritage BFS via head-pointer queue
- Clarified re-export facade framing on binding-accumulator.ts and
  heritage-map.ts inside model/
- Refined @internal JSDoc on lookupMethodByOwnerWithMRO

Changes:
- symbol-table.ts: expose `readonly model: SemanticModel` on the
  SymbolTable interface. SymbolTable delegate wrappers (lookupClassByName
  etc.) stay as thin pass-throughs for backward compat; deletion is a
  follow-up once all internal callers are migrated.
- model/resolve.ts: lookupMethodByOwnerWithMRO now takes SemanticModel
  instead of SymbolTable, removing the last SymbolTable import from the
  model/ module. Preserves circular-dependency firewall.
- call-processor.ts: 6 call sites in D0 member resolution, field
  resolution, ctor override, and ctor disambiguation migrated to
  model.types/methods/fields.
- resolution-context.ts: tier 3 class+impl lookup migrated.
- type-env.ts: 5 sites across lookupClassDefsByName, resolveFieldType,
  and resolveMethodReturnType migrated.
- heritage-map.ts: parent/child class-name resolution migrated.

Tests:
- symbol-table.test.ts: +10 parity and feeding-audit tests covering
  every model.{types,methods,fields} path (Class, Method, Property,
  Impl, Function-with-ownerId, Property-without-ownerId skip, arity
  filtering, clear cascade).
- call-processor.test.ts: classLookupSpy now targets
  ctx.symbols.model.types since the wrapper is bypassed.
- type-env.test.ts: createMockSymbolTable and the destructured-call
  makeSymbolTable helpers gained a model shim that forwards to the
  (possibly overridden) top-level lookup stubs.

Validation: full suite 5603 passed / 159 skipped, resolver integration
suite (19 files, 1766 tests) clean, tsc --noEmit clean.

* refactor(SM-21): invert ownership — SemanticModel contains SymbolTable

Follow-up to SM-20. Previously SymbolTable owned a `model` subfield;
this commit turns the ownership direction around so the SemanticModel
is the top-level container and SymbolTable is nested as `.symbols`:

    SemanticModel (top-level, passed everywhere)
      ├── types   (TypeRegistry)
      ├── methods (MethodRegistry)
      ├── fields  (FieldRegistry)
      └── symbols (SymbolTable — file-indexed + callable-name index)

The owner-scoped registries live directly on the model; file and
callable-name lookups go through `.symbols`. Consumers receive a
`SemanticModel` and reach into the appropriate field — no more
`table.model.types.X` double-hop.

Core changes:
- symbol-table.ts: createSymbolTable now takes injected
  TypeRegistry/MethodRegistry/FieldRegistry via a SymbolTableDeps
  argument. When omitted (test fallback), it creates standalone
  registries locally and clears them in clear() — production callers
  always inject. The five registry convenience delegates
  (lookupClassByName, lookupMethodByOwner, lookupFieldByOwner,
  lookupClassByQualifiedName, lookupImplByName) remain as thin
  forwards to the injected registries so standalone SymbolTable use
  (chiefly tests) stays ergonomic.
- model/semantic-model.ts: createSemanticModel() now creates the
  three registries AND a SymbolTable wired to them, exposing the
  SymbolTable as `.symbols`. clear() cascades through all four.
- resolution-context.ts: `readonly symbols: SymbolTable` field is
  replaced with `readonly model: SemanticModel`. Internal factory
  builds a SemanticModel and keeps a local `symbols` alias for
  backward-compatible inner body.

Consumer migrations (src/):
- call-processor.ts: ctx.symbols.add/.lookupExactAll/
  .lookupCallableByName → ctx.model.symbols.*; ctx.symbols.model.X →
  ctx.model.X. buildTypeEnv option key renamed symbolTable → model.
- type-env.ts: symbolTable parameter renamed model (type
  SemanticModel), all internal call sites rewritten to use
  model.types.*, model.methods.*, model.fields.*,
  model.symbols.lookupExactAll / .lookupCallableByName.
- heritage-map.ts: 2 class-lookup sites migrated.
- pipeline.ts: ctx.symbols → ctx.model.symbols throughout.

Test migrations:
- symbol-table.test.ts: parity tests (which validated the old
  table.model.X hop) replaced with direct SemanticModel coverage via
  createSemanticModel(). New tests exercise types/methods/fields/
  symbols feeding end-to-end.
- type-env.test.ts: createMockSymbolTable rebuilt as a
  SemanticModel-shaped mock that still accepts the legacy flat
  override bag for backward compat; inline `makeSymbolTable` helpers
  for destructured-call and importedReturnTypes suites rewritten to
  match the new shape; buildTypeEnv options `symbolTable: X` and
  `{ symbolTable }` shorthand renamed to `model:`; one real
  createSymbolTable-based test rewritten to use createSemanticModel.
- call-processor.test.ts, heritage-map.test.ts,
  heritage-processor.test.ts, symbol-resolver.test.ts: bulk sed
  `ctx.symbols.` → `ctx.model.symbols.`. call-processor.test.ts spy
  updated to target `ctx.model.types.lookupClassByName`.

Validation: full test suite 5589 passed / 169 skipped / 0 failed;
tsc --noEmit clean; pre-commit eslint + prettier + typecheck all
green. CLAUDE.md / AGENTS.md stats bumped from an earlier `npx
gitnexus analyze` refresh (3965 symbols / 10012 edges / 243 flows).

* refactor(SM-22/SM-23): dispatch table + DAG rearchitecture

SM-22: Extract registration dispatch table into model/registration-table.ts.
Replaces the if/else ladder inside SymbolTable.add() with an O(1)
Map<NodeLabel, RoutingDecision> fan-out. SemanticModel wires the table
per-instance so hooks close over the correct registries.

SM-23: DAG rearchitecture. symbol-table.ts is now a pure 2-index leaf
(fileIndex + callableByName) with zero imports from model/. All
type/method/field routing lives in the model/ layer. Tests migrated to
createSemanticModel() + model.symbols access pattern.

Tests: 5632 passed, 0 failures.

* refactor: delete dead code (skipCallableIndex + model/ facades)

Removes the unused skipCallableIndex flag from the registration dispatch
table and deletes two facade files that had zero consumers.

skipCallableIndex was declared on RoutingDecision and populated for all
10 entries but never read at runtime — semantic-model.ts explicitly
documented that the flag was NOT consulted. The callable-index gate
lives inside SymbolTable.add() via CALLABLE_TYPES.has(type), which is
the single source of truth. Deleting the flag keeps SymbolTable as the
sole decision point and removes documentation-as-data.

model/binding-accumulator.ts and model/heritage-map.ts were facade
pass-throughs of their parent-directory counterparts. Grep confirms no
consumer imports either from the model/ path — all usage goes through
../binding-accumulator.js and ../heritage-map.js directly. model/index.ts
was the only "user" and re-exported them with a note about unifying the
import boundary, but that boundary has no actual consumers today.

Resolves review findings M-01 and M-03 from
.context/compound-engineering/ce-review/20260411-144641-59605d93/maintainability.json

Tests: 5631 passed, 0 failures (1 less than pre-Unit-1: the
skipCallableIndex-specific assertion was removed).

* refactor: remove lookupMethodByOwnerWithMRO backward-compat shim

call-processor.ts re-exported lookupMethodByOwnerWithMRO from
./model/resolve.js as a backward-compat shim for symbol-table.test.ts.
The function already lives in model/resolve.ts and is re-exported
properly from model/index.ts (the barrel) — the call-processor shim
was a duplicate export path with no durable reason to exist.

Migrated the test import from call-processor.js to model/index.js
(the canonical barrel). Deleted the re-export statement and the stale
"re-exported for backward compatibility" comment block. Hoisted the
remaining import to the top of the file with the other imports; the
bottom-of-file position was a relic of the shim pattern.

Resolves review finding M-02 from
.context/compound-engineering/ce-review/20260411-144641-59605d93/maintainability.json

Tests: 5631 passed, 0 failures.

* refactor: harden registration dispatch runtime safety

Two hardening changes in semantic-model.ts, both closing silent-failure
paths in the SM-series dispatcher-bypass failure mode.

1. model.symbols.clear() now cascades to the owner-scoped registries.
   Previously, the SymbolTable facade exposed rawSymbols.clear directly,
   which only emptied fileIndex + callableByName — the types/methods/
   fields registries stayed populated. Any caller holding a SymbolTable
   reference that invoked .clear() left the model in a split state where
   subsequent .add() calls double-registered in the registries. No
   current caller exercises this path, but it was a latent phantom-
   resolution risk that didn't belong in a public API. Extracted the
   cascade into a single cascadeClear closure wired into both
   model.clear() and the facade's clear field.

2. runExhaustivenessGuard now throws instead of console.warn on drift.
   The production short-circuit via NODE_ENV === 'production' is
   preserved, so real users never see the throw — but CI and dev runs
   now fail loudly if a NodeLabel is added to gitnexus-shared without
   being placed in one of the three registration-table allowlists. The
   previous warn-only behavior was silent in test output volume; SM-19
   already documented dispatcher-bypass as the dominant silent-failure
   mode in this codebase.

Test-first: added test/unit/model/semantic-model.test.ts covering
model.symbols.clear() cascade (4 registries × clear = 4 tests), the
existing model.clear() cascade (regression guard), and a happy-path
construction test that verifies the current allowlists have zero drift.

Resolves correctness P2 finding (symbols.clear() partial clear),
correctness P3 (exhaustiveness warn-only), and kieran-typescript KT-03
(same exhaustiveness finding, agreement boost).

Tests: 5638 passed (+7 new), 0 failures.

* docs: fix stale JSDoc references in resolveStaticCall

call-processor.ts:2215-2216 referenced SymbolTable.lookupClassByName
and SymbolTable.lookupMethodByOwner via {@link}. Both methods were
removed from SymbolTable during SM-20 — they now live on TypeRegistry
and MethodRegistry respectively, accessible via model.types and
model.methods.

Other SymbolTable.* references in the codebase (lookupExactFull, add,
lookupCallableByName in call-processor.ts:593, symbol-table.ts:86,
type-extractors/types.ts:57) target methods that are still on
SymbolTable and remain valid.

Resolves correctness P3 and kieran-typescript KT-02 (same finding,
agreement boost).

* refactor: deduplicate ALL_NODE_LABELS constant

ALL_NODE_LABELS was private in semantic-model.ts and duplicated
verbatim in registration-table.test.ts. Two hardcoded lists meant a
new NodeLabel added to gitnexus-shared could land in one copy but not
the other, silently drifting the exhaustiveness invariant.

Exported ALL_NODE_LABELS from semantic-model.ts, re-exported through
model/index.ts for barrel consistency, and switched the test to import
it instead of redeclaring. The explanatory comment now describes the
single-source-of-truth contract.

Resolves maintainability M-04.

Tests: 5638 passed, 0 failures.

* refactor: add compile-time NodeLabel exhaustiveness check

The runtime exhaustiveness guard in semantic-model.ts caught drift at
test time. Added a type-level check in registration-table.ts that
catches drift at BUILD time — if a new NodeLabel is added to
gitnexus-shared without being classified into one of the three
allowlists, TypeScript fails the _exhaustiveCheck assignment and
names the missing label.

The runtime guard stays as belt-and-suspenders: if a future contributor
bypasses the type check with @ts-ignore, the runtime guard still fires
in dev/test.

Implementation: converted the three allowlist Set<NodeLabel> initializers
to use `as const` tuples, then derived a union type from the tuples and
asserted `Exclude<NodeLabel, union> extends never`. Zero runtime impact
— the exported Sets are unchanged, Map.get hot-path performance is
unchanged, the test API is unchanged.

Resolves kieran-typescript KT-04.

Tests: 21/21 registration-table tests pass with zero modifications.

* refactor(test): restore type safety to createMockSymbolTable

createMockSymbolTable was widened to (overrides: any = {}): any with an
eslint-disable-next-line, and every buildTypeEnv call site passed the
mock as `model: mockSymbolTable as any`. The widening masked silent
false-green tests: buildTypeEnv accesses model.types/methods/fields,
and a flat any-typed override could silently return undefined from a
path that TypeScript should have caught at compile time.

Defined LegacyMockOverrides interface with typed stubs for each method
the mock can override (SymbolTable reads + TypeRegistry/MethodRegistry/
FieldRegistry lookups). Return type is now SemanticModel, so the mock
object is compile-checked against the real interface — a missing
registry method is a type error, not a silent runtime undefined.

Removed the eslint-disable and all 9 `as any` casts at call sites
(lines 1287, 1300, 1307, 2124, 2138, 5823, 5835, 5850, 5870). The
mock's return value now flows through buildTypeEnv's typed `model`
option without coercion.

Resolves kieran-typescript KT-01 and testing gap TG-02. This was the
highest-value cleanup in the plan — the only finding representing real
hidden test weakness.

Tests: 360 passed | 7 skipped (type-env.test.ts), typecheck clean.

* test: close coverage gaps in model/ registries

Added direct unit tests for the three owner-scoped registries that
previously had only transitive coverage via symbol-table.test.ts and
registration-table.test.ts. These new tests pin behaviors that were
flagged by the testing reviewer as untested or undertested.

method-registry.test.ts (14 tests):
- T-01: arity-fallback branch — when argCount matches no overload,
  fall back to the full pool so fuzzy resolution still has candidates.
  Previously untested and would have returned undefined instead of
  a valid candidate if the branch regressed.
- T-02: requiredParameterCount range filtering — methods with default
  parameters accept any argCount in [requiredParameterCount,
  parameterCount]. Previously untested at the registry level.
- Variadic fallback (parameterCount=undefined is retained during arity
  narrowing, bypassing range check).
- Return-type dedup paths: shared returnType → first wins, differing
  returnTypes → undefined, firstReturnType=undefined → undefined,
  single-overload skips dedup entirely.

type-registry.test.ts (9 tests):
- classByName homonym accumulation (two User classes in different
  packages both returned).
- classByQualifiedName disambiguation — same simple name, different
  FQNs resolve independently.
- Partial classes with identical simple + qualified name accumulate
  in both indexes.
- registerImpl stores Rust impl blocks separately from classes.
- Multiple impl blocks per type accumulate.

field-registry.test.ts (6 tests):
- register/lookup round-trip, owner-scope isolation, last-wins on
  duplicate key (flat map, not overload list).
- clear + re-register round-trip.

Extended symbol-table.test.ts cascade test (renamed from "both
registries" to "all three registries and the nested symbol table") to
also assert model.methods and model.fields are cleared — the test
name previously implied full coverage but only asserted types + symbols.

Resolves testing findings T-01, T-02, T-03, T-05.

Tests: 5667 passed (+29 new), 0 failures.

* refactor(test): replace brittle reference-equality tests + add intent comments

Two cleanups flagged as low-severity P3 by the testing reviewer:

1. registration-table.test.ts: Replaced three reference-equality tests
   (hook identity via toBe) with behavioral tests that survive a future
   refactor to per-label closures. The new "class-like behavior group"
   describe iterates Class/Struct/Interface/Enum/Record/Trait and
   verifies each one writes to types.registerClass. Same pattern for
   Method/Constructor. A separate "behavior group isolation" describe
   verifies class-like hooks don't leak into methods/fields and Impl
   never pollutes registerClass. Strictly more coverage than the
   reference-equality tests provided and implementation-independent.

2. symbol-resolver.test.ts: Added a comment above the lookupExactFull
   and SM-16: getFiles() describes explaining why they intentionally
   use createSymbolTable() directly instead of createSemanticModel().
   The DAG leaf-only behaviors they test do not involve registries, so
   testing the bare SymbolTable keeps the unit isolated. Prevents a
   future reader from "fixing" the inconsistency.

3. qualified-class-lookups.test.ts: Added a comment above
   `const symbolTable = model.symbols` explaining that processParsing
   writes still reach the owner-scoped registries via SemanticModel's
   fan-out — the alias is convenience, not a leaf in isolation.

Resolves testing T-04, kieran-typescript KT-05, kieran-typescript KT-06.

Tests: affected files all green (112 passed in registration-table +
symbol-resolver + qualified-class-lookups).

* refactor(model): collapse RoutingDecision wrapper and trim barrel surface

Two cleanups against the advanced-review findings on post-Unit-9 state:

S2 (cross-reviewer agreement — architecture-strategist + code-simplicity):
Delete the RoutingDecision single-field wrapper interface. Post-Unit-1
it held exactly one field (hook: RegistrationHook) and added pure
ceremony at every call site — `dispatchTable.get(key)!.hook(name, def)`
vs the now-direct `dispatchTable.get(key)!(name, def)`. Change the Map
type from Map<NodeLabel, RoutingDecision> to Map<NodeLabel,
RegistrationHook>, drop the interface, and update 17 test call sites.

A3 (architecture-strategist): Trim model/index.ts barrel surface.
createRegistrationTable, RegistrationHook, and RegistrationTableDeps
were re-exported from the barrel despite having zero legitimate
consumers outside model/ itself. The only callers (semantic-model.ts
and registration-table.test.ts) import directly from
./registration-table.js. Barrel exposure invited external callers to
construct orphan dispatch tables with independent registries,
weakening the SM-21 ownership inversion where SemanticModel is the
composition root. Kept CALLABLE_ONLY_LABELS, INERT_LABELS,
DISPATCH_LABELS exported since those remain useful for downstream
resolution logic and have no construction risk.

Resolves review findings:
- S2 (code-simplicity P3, 0.85) + architecture-strategist residual
- A3 (architecture-strategist P3, 0.82)

Tests: 5674 passed, 0 failures. Typecheck clean.

* refactor(model): replace runtime exhaustiveness guard with compile-time bijection

Replace the three-layer drift protection (hardcoded ALL_NODE_LABELS
array + 3 tuple consts + _ExhaustiveLabelCheck type + runExhaustivenessGuard
runtime + CI taxonomy test) with a single Record<NodeLabel, LabelBehavior>
map that structurally proves every invariant at compile time.

## Before

- ALL_NODE_LABELS hardcoded in semantic-model.ts (36 entries, could drift)
- DISPATCH_LABELS_TUPLE / CALLABLE_ONLY_LABELS_TUPLE / INERT_LABELS_TUPLE
  private tuples (36 more entries total, could overlap or miss)
- _ClassifiedLabel / _UncoveredLabel type-level check (caught missing
  labels but NOT duplicates across tuples)
- runExhaustivenessGuard runtime throw (only defense against duplicates)
- NodeLabel taxonomy coverage test in CI (same check as runtime guard)

Four defenses for invariants that the type system can express directly.

## After

```ts
type LabelBehavior = 'dispatch' | 'callable-only' | 'inert';

const LABEL_BEHAVIOR = {
  Class: 'dispatch',
  // ...36 entries...
  Tool: 'inert',
} as const satisfies Record<NodeLabel, LabelBehavior>;
```

The `as const satisfies Record<NodeLabel, LabelBehavior>` combo enforces:

1. **Every NodeLabel must be a key** — Record requires all K keys.
   Adding a NodeLabel to gitnexus-shared without classifying it here
   fails with "Property 'X' is missing in type ..." naming the drifted label.
2. **No non-NodeLabel keys allowed** — `satisfies` with object literals
   triggers excess-property checking. A typo'd key fails to compile.
3. **No duplicate classification** — impossible by construction; object
   keys are unique at the source level.
4. **Valid category** — LabelBehavior is a narrow union, typos caught.

`ALL_NODE_LABELS`, `DISPATCH_LABELS`, `CALLABLE_ONLY_LABELS`, and
`INERT_LABELS` are now derived via `Object.keys(LABEL_BEHAVIOR)` and
`filter(l => LABEL_BEHAVIOR[l] === ...)` — single source of truth,
structurally impossible to drift.

## Deleted

- runExhaustivenessGuard() function in semantic-model.ts (~18 lines)
- ALL_NODE_LABELS hardcoded array in semantic-model.ts (~38 lines)
- DISPATCH_LABELS_TUPLE / CALLABLE_ONLY_LABELS_TUPLE / INERT_LABELS_TUPLE
  private consts in registration-table.ts (~30 lines)
- _ClassifiedLabel / _UncoveredLabel / _exhaustiveCheck type machinery
  (~20 lines)

## Kept named proofs: none

The `as const satisfies` on the object literal already catches all four
drift modes. Named type-level proofs (_MissingFromMap / _ExtraKeysInMap)
are pure duplication and were removed per review.

## Also in this commit

- S6: trim wrappedAdd narration comments in semantic-model.ts
  (Step 1/2/3 block comments removed; kept the Function+ownerId WHY note)
- A3: tighten model/index.ts barrel — createRegistrationTable,
  RegistrationHook, RegistrationTableDeps remain direct-imports only;
  ALL_NODE_LABELS and LabelBehavior re-exported from the new home in
  registration-table.ts

## Resolves

- Advanced-review S4 (runtime guard per-call cost) — guard no longer exists
- Advanced-review S1 (tuple three-defenses indirection) — single Record replaces all tuples
- Correctness P3 (exhaustiveness warns-only) — structurally impossible to drift
- Unit 6 type-level check — subsumed by the Record type
- Unit 3 runtime throw — no longer needed

Tests: 5674 passed, 0 failures. Typecheck clean.

* test(model): delete duplicate closure-isolation spy tests

S5 (code-simplicity P3): The 'closure isolation — each hook can only
write to its registry' describe block duplicated the 'behavior group
isolation' block's coverage via a different mechanism.

Behavioral tests (lines 151-174, kept):
  table.get('Class')!('User', def);
  expect(deps.methods.lookupMethodByOwner('unrelated', 'User')).toBeUndefined();
  expect(deps.fields.lookupFieldByOwner('unrelated', 'User')).toBeUndefined();

Spy tests (deleted, ~55 lines):
  vi.spyOn(deps.methods, 'register')
  table.get('Class')!('User', def);
  expect(methodsSpy).not.toHaveBeenCalled();

Both assert the same invariant — classHook does not touch the methods or
fields registries. The behavioral form observes the END STATE of the
registry (lookup returns undefined), which is the actual contract.
The spy form asserts the IMPLEMENTATION (a specific method was not
called), which couples to internal wiring — a refactor to a different
register function name would break the spy test while the behavioral
test would still pass.

Also dropped the now-unused `vi` import from vitest.

Tests: 24/24 registration-table.test.ts pass (-4 from spy deletion).

* refactor(model): compile-time cross-invariant between CLASS_TYPES and dispatch classHook

A1 (architecture-strategist P2, 0.90): CLASS_TYPES in symbol-table.ts
and the class-like entries of the dispatch table were two independent
hardcoded sets. Adding a new class-like label (e.g. Swift 'Extension')
to one but not the other would silently degrade qualifiedName
population — the symptom is subtle (partial qualified-name lookups)
and no test asserted the co-extensive invariant.

Fixed with a single source of truth and a two-layer compile-time
enforcement:

## symbol-table.ts

- Add `CLASS_TYPES_TUPLE` as `readonly [...] as const satisfies
  readonly NodeLabel[]`. The `satisfies` forces every tuple entry to
  be a valid NodeLabel at compile time.
- Export derived type `ClassLikeLabel = typeof CLASS_TYPES_TUPLE[number]`.
- Derive `CLASS_TYPES` Set from the tuple — same runtime shape as
  before, now typed `ReadonlySet<NodeLabel>`.

## registration-table.ts

- Import `CLASS_TYPES_TUPLE` and `ClassLikeLabel` from symbol-table.ts.
- Narrow the `satisfies` on `LABEL_BEHAVIOR` via intersection:
      Record<NodeLabel, LabelBehavior> & Record<ClassLikeLabel, 'dispatch'>
  This forces every class-like label to have value 'dispatch' at
  compile time. Adding a label to CLASS_TYPES_TUPLE without
  classifying it as dispatch in LABEL_BEHAVIOR fails to compile with
  a type error naming the drifted label.
- Build the class-like entries of the dispatch Map by iterating
  `CLASS_TYPES_TUPLE` at factory time. Adding a label to the tuple
  automatically wires it to classHook — no second place to update.

## What the design prevents

1. Drift scenario A (A1 original): 'Extension' added to CLASS_TYPES_TUPLE
   but not to LABEL_BEHAVIOR → compile error on LABEL_BEHAVIOR's
   satisfies.
2. Drift scenario B: 'Extension' added to CLASS_TYPES_TUPLE but not
   wired to classHook → impossible because the Map is derived from the
   tuple.
3. Drift scenario C: class-like label classified as something other
   than 'dispatch' in LABEL_BEHAVIOR → compile error on the narrowed
   intersection.

Runtime behavior unchanged: same 6 labels in CLASS_TYPES, same 6
class-like entries in the dispatch Map. Tests pin the behavior via
the existing behavior-group tests in registration-table.test.ts.

DAG unchanged: registration-table.ts already imported from symbol-table.ts
(the allowed upward direction). symbol-table.ts still imports nothing
from model/.

Tests: 5670 passed, 0 failures. Typecheck clean.

* test(field-extraction): use SemanticModel facade instead of raw SymbolTable

A6 (architecture-strategist P3, 0.85): field-extraction.test.ts created
its FieldExtractorContext fixture with `symbolTable: createSymbolTable()` —
a raw SymbolTable leaf, not the facade. In production, the context's
symbolTable field is always `model.symbols` (the SemanticModel-wrapped
facade where .add() dispatches through the owner-scoped registries).

The current field extractors don't call symbolTable.add() at all, so
this change is behavior-neutral today. The value is architectural
consistency — matching the test fixture to the production shape
prevents silent drift if a future field extractor starts registering
dynamically-discovered properties via the context. Without the fix,
such writes would hit the raw leaf and skip the fan-out, and tests
would pass even though the symptom (empty FieldRegistry) would
manifest in production.

Tests: 50/50 field-extraction.test.ts pass. Production tsc --noEmit
clean. Test-tsconfig error count unchanged (634 pre-existing errors
in unrelated test files, out of scope).

* refactor(A5): decouple model/resolve.ts from language registry

Move the MroStrategy type into gitnexus-shared and replace the
language: SupportedLanguages parameter on lookupMethodByOwnerWithMRO
with a direct mroStrategy: MroStrategy literal. Callers derive the
strategy from their language provider before invoking the resolver.

model/resolve.ts no longer imports from ../languages/index.js, so the
model/ layer is free of cross-layer coupling with the language
registry — this closes finding A5 from the SM-20/21/22/23 advanced
review (plan 006).

* feat(A4): add MethodRegistry.lookupMethodByName flat-by-name index

Add a secondary `methodsByName: Map<string, SymbolDefinition[]>` index
on MethodRegistry that returns every method with a given unqualified
name, accumulated across owners and overloads. The new index shares
SymbolDefinition references with methodByOwner — no duplication.

This is step 1 of the A4 double-index removal (plan 006). Tier 3
global resolution will switch to this index in Unit 3 so Method and
Constructor can be removed from CALLABLE_TYPES in Unit 4.

* refactor(A4): extend Tier 3 + memberCallByFile to consult method registry

Add model.methods.lookupMethodByName to Tier 3 global resolution in
resolution-context.ts and to the callable-pool build in
call-processor.ts (resolveMemberCallByFile + D2 widen path).

Intentionally behavior-preserving: Method and Constructor are still
in CALLABLE_TYPES so the new lookup returns identical candidates that
already reach Tier 3 through callableByName. Both paths dedup by
nodeId during this intermediate state — Unit 4 shrinks CALLABLE_TYPES
and the dedup is removed.

Part of plan 006 A4 step 2.

* refactor(A4): shrink CALLABLE_TYPES to free callables only

CALLABLE_TYPES = {Function, Macro, Delegate}. Method and Constructor
are no longer double-indexed in callableByName — they reach resolvers
through model.methods.lookupMethodByName instead.

Companion changes:
- Introduce CALL_TARGET_TYPES = CALLABLE_TYPES ∪ {Method, Constructor}
  for the resolver's kind filter (filterCallableCandidates,
  countCallableCandidates). Separates registration semantics (narrow)
  from the resolver's acceptable-target set (wide).
- type-env.ts for-loop return-type inference consults both indexes,
  treating the union as the authoritative call pool.
- resolveMemberCallByFile + D2 widen path keep the nodeId dedup in
  place: Python/Rust/Kotlin class methods emitted as Function+ownerId
  still land in both indexes until Unit 5 unblocks the normalization.
- Tier 3 global resolution (resolution-context.ts) keeps the same
  dedup for the same reason.

Test updates reflect the new contract: Method/Constructor live in
methodsByName, not callableByName. Orphan Method-without-ownerId now
lives only in the file index (no registry coverage).

Part of plan 006 — closes A4 for strictly-labeled methods. Python/
Rust/Kotlin Function+ownerId normalization is tracked as Unit 5
(blocked).

* refactor: rename CALLABLE_TYPES → FREE_CALLABLE_TYPES

Pure rename. The constant's meaning changed in Unit 4 (free callables
only — no methods, no constructors) so the name now reflects that
scope: "callables that have no owner scope". Updates the constant
declaration and every consumer in src/ and test/.

Closes plan 006 Unit 6.

* refactor(A2): strict SymbolTableReader (pure reads) + SymbolTableWriter (+add)

Split the SymbolTable interface into three strictly layered surfaces:

- SymbolTableReader: lookups + iteration. NO add, NO clear. Holders
  cannot mutate the table in any way.
- SymbolTableWriter extends Reader: + add. NO clear. Holders can
  register new symbols but cannot trigger a leaf-index reset.
- InternalSymbolTable (private, not exported): + clear. The cascading
  reset capability is reachable only through createSymbolTable's
  return type, held exclusively by SemanticModel.rawSymbols.

SemanticModel.symbols is now typed as SymbolTableWriter — external
consumers (workers, processors, pipelines) can register symbols and
query them, but cannot reach .clear(). The A2 LSP fix holds: callers
holding any public reference cannot desync the leaf indexes from the
owner-scoped registries.

Delete the transitional `type SymbolTable = SymbolTableReader` alias
and migrate every consumer (src + test) to the explicit names:
- Field and parameter annotations use SymbolTableReader by default;
  only code that calls .add() uses SymbolTableWriter.
- parsing-processor (workers + sequential paths) takes
  SymbolTableWriter so it can register extracted symbols.
- field-types, call-processor, named-binding-processor,
  workers/parse-worker: use SymbolTableReader (query-only).
- Tests: drop the stale `clear` fields from mock factories and
  migrate the semantic-model cascade tests from the removed
  model.symbols.clear() path to model.clear().

Closes plan 006 Unit 7. Industry sources: TypeScript compiler API
builder pattern, Salsa ParallelDatabase, .NET IReadOnlyList. See the
a2-lsp-clear-contract-research artifact for full citations.

* feat(A2): add SemanticModel.resetFileIndex() partial-reset entry point

Add a named method that clears only the leaf file and callable
indexes without cascading to the three owner-scoped registries
(types, methods, fields). Replaces the rare partial-reset use case
that was previously reachable via the now-removed symbols.clear()
path from A2 (plan 006 Unit 7).

JSDoc makes the semantic difference with model.clear() explicit so
future readers don't have to guess which method to call for a given
reingestion scenario.

Test-first: three scenarios cover the partial-vs-full semantics,
re-add after reset, and idempotency.

Closes plan 006 Unit 8.

* docs(S7): trim registration-table module JSDoc

Remove the ~24 lines of design-provenance citations from the module
JSDoc. The rust-analyzer, TypeScript-compiler, and Fowler references
are preserved in git history via the original SM-22 commits and in
plan 006 Unit 9.

Keep the ownership diagram, behavior-group table, and the
'How to add a new NodeLabel' checklist — those are load-bearing for
future contributors.

Closes plan 006 Unit 9 (S7 advanced-review finding).

* test(S3): migrate type-env.test.ts off LegacyMockOverrides

Replace the createMockSymbolTable bridge and LegacyMockOverrides
interface with real createSemanticModel() + add() calls across all
14 call sites. Where a test needs a specific registry lookup that
can't be pre-populated cleanly, use vi.spyOn on the real registry
instead.

Pattern breakdown:
- Pattern A (pre-populate via model.symbols.add): 13 sites
- Pattern B (vi.spyOn on registry lookup): 1 site

Deletes LegacyMockOverrides + createMockSymbolTable entirely. The
real MethodRegistry arity/returnType semantics match the hand-rolled
mock behavior in every migrated case, and no 'as any' casts remain
in the file.

Closes plan 006 Unit 10 (S3 advanced-review finding).

* refactor: remove unused MroStrategy type exports from language-provider and resolve modules

* refactor: relocate symbol-table, heritage-map, resolution-context into model/

Use git mv so blame and history follow each file:
- gitnexus/src/core/ingestion/symbol-table.ts → model/symbol-table.ts
- gitnexus/src/core/ingestion/heritage-map.ts → model/heritage-map.ts
- gitnexus/src/core/ingestion/resolution-context.ts → model/resolution-context.ts

These three files are part of the SemanticModel layer (file/callable
indexes, heritage parent map, tiered resolver) and now sit alongside
the registries they collaborate with. Updates every consumer import
path across src/ and test/ to the new locations.

* refactor(model): enforce pure-leaf DAG + delete legacy re-exports

model/ is now a pure leaf: zero upward imports and zero compat
shims in its parent processors. Completes the DAG cleanup started
in the previous commit.

1. walkBindingChain — moved into model/resolution-context.ts;
   named-binding-processor.ts deleted.

2. NamedImportMap + NamedImportBinding + isFileInPackageDir —
   moved into model/resolution-context.ts. Every consumer now
   imports from the canonical location directly. Legacy re-exports
   in import-processor.ts deleted.

3. c3Linearize + gatherAncestors — moved into model/resolve.ts.
   mro-processor.ts imports them back for computeMRO. Legacy
   c3Linearize re-export from mro-processor.ts deleted.

4. ExtractedHeritage type — moved into model/heritage-map.ts.
   call-processor.ts, parsing-processor.ts, pipeline.ts,
   heritage-processor.ts, and the test files now import it from
   the canonical location. Legacy re-exports in parse-worker.ts
   and heritage-processor.ts deleted.

5. resolveExtendsType — rewritten in model/heritage-map.ts to
   take an explicit HeritageResolutionStrategy (A5-style DI).
   buildHeritageMap accepts an optional getHeritageStrategy
   callback; production uses getHeritageStrategyForLanguage from
   heritage-processor.ts. Legacy resolveExtendsType re-export
   from heritage-processor.ts deleted.

Verified:
- grep 'from "..' gitnexus/src/core/ingestion/model → empty
- grep 'Re-export for legacy' gitnexus/src/core/ingestion → empty
- npx tsc --noEmit → clean
- npx vitest run → 5686 passing

* docs(model): strip phase/plan references from module comments

Remove SM-20/21/22/23, A2/A4/A5, plan 006, Unit N labels and historical
phrasing ("previously", "legacy", "model-leaf DAG cleanup") from all 10
files in src/core/ingestion/model/. Preserve domain vocabulary (Tier
1/2/3), invariants, and caveats — only the plan archaeology is gone.

* refactor(model): tighten interface segregation + compile-time invariants

Apply four gated findings from branch-wide code review:

- SemanticModel.symbols now typed as SymbolTableReader; MutableSemanticModel
  widens it back to SymbolTableWriter. ResolutionContext.model is typed as
  MutableSemanticModel since it owns the lifecycle. Resolvers that only
  query symbols can annotate their own fields as SemanticModel to drop
  write access at the type level.

- Lookup methods (lookupExactAll, lookupCallableByName, lookupClassByName,
  lookupClassByQualifiedName, lookupImplByName) now return
  readonly SymbolDefinition[]. The returned arrays are live views into
  the internal indexes; the readonly marker prevents accidental caller
  mutation. walkBindingChain return type narrowed to match.

- FREE_CALLABLE_TUPLE + FreeCallableLabel exported from symbol-table.ts
  as the single source of truth for free-callable labels. LABEL_BEHAVIOR
  now satisfies Record<FreeCallableLabel, 'callable-only'> as a second
  cross-invariant alongside Record<ClassLikeLabel, 'dispatch'>. Adding a
  label to the tuple without classifying it as 'callable-only' fails at
  build time. CALLABLE_ONLY_LABELS is now a re-export alias of
  FREE_CALLABLE_TYPES so the two sets cannot drift.

- walkBindingChain fast-exits before allocating its cycle-detection Set
  when the caller's file has no named bindings. Skips ~200k transient
  Set allocations per large-repo resolution pass.

Also fixes five stale comments flagged by the review: duplicate JSDoc
block on RegistrationHook merged; resolve.ts "delegates to mro-processor"
direction corrected; RegistrationTableDeps JSDoc names
createRegistrationTable (not createSymbolTable); mro-processor.ts
"re-exported at top" stale comment removed; gatherAncestors export
comment matches reality.

tsc --noEmit clean, full test suite green (5786 tests).

* refactor(model): resolve four deferred P2 review findings

Address the four gated items from the branch-wide review that needed
design decisions before applying:

F#3 — Method/Constructor without ownerId fallback to callable index.
The dispatch hook silently skips owner-scoped labels that lack an owner
(an extractor contract violation — AST-degraded parse, or a buggy
language extractor). Pre-dispatch-table code let such defs fall through
to callableByName and stay reachable at Tier 3 global resolution. This
restores that fallback in SymbolTable.add so orphaned Methods and
Constructors don't silently vanish. Property deliberately does NOT
participate in the fallback to avoid polluting common names like
id / name / type.

F#4 — Delete MutableSemanticModel.resetFileIndex. The method had zero
production callers (only three tests), documented a "rare partial-
reingestion flow" that was never implemented, and contained the
adversarial-reviewer's double-populate trap: calling resetFileIndex
followed by re-adding the same class symbol would push a duplicate
SymbolDefinition into TypeRegistry.classByName without ever clearing
the first one. If incremental reingestion is ever needed, it can be
designed properly with per-file TypeRegistry invalidation. For now,
deleting the footgun is safer than documenting it.

F#5 — Compile-time dispatch-table completeness check. `LABEL_BEHAVIOR`
already enforces "every NodeLabel is classified" via
`Record<NodeLabel, LabelBehavior>`, but the dispatch-table factory
populated its Map with manual `table.set(...)` calls that TypeScript
could not correlate back to the `'dispatch'` classification. Add a
type-level `DispatchLabel` extracted from `LABEL_BEHAVIOR` via a
conditional mapped type, and build the table from an object literal
that satisfies `Record<DispatchLabel, RegistrationHook>`. Adding a new
dispatch-classified label without wiring it to a hook now fails the
build with a named-key error — no more silent no-op hooks.

F#7 — Tier 3 dedup fast-path via MethodRegistry.hasFunctionMethods.
The Set-based dedup between callableDefs and methodDefs is only needed
when a Python/Rust/Kotlin class method (emitted as Function+ownerId by
the worker) lands in both indexes. For TS/Java/C#/C++/Ruby-only repos
— where the two indexes are disjoint by construction — the dedup was
pure overhead on every global-tier hit. MethodRegistry now tracks
whether any Function-typed def was ever registered, and resolution-
context branches Tier 3 into a concat-only fast path when that flag
is false. Slow path with dedup survives unchanged for mixed-language
repos.

New tests pin the invariants: hasFunctionMethods flag transitions,
Method/Constructor orphan fallback, Property non-fallback, and the
MethodRegistry clear() reset. Full test suite green (5756 tests).

* refactor(model): close remaining P3 review findings + coverage gaps

Address the remaining review items in one batch.

Production refactors:

- Rename classHook → classLikeHook (M05). The hook handles Class /
  Struct / Interface / Enum / Record / Trait; the vocabulary used in
  surrounding docs and the behavior-group table is "class-like". The
  rename makes the code match the taxonomy without forcing readers
  through a mental glossary.

- Extract MAX_BINDING_CHAIN_DEPTH constant in resolution-context.ts
  and document it as a known silent false-negative source (ADV-003).
  Five hops cover the common TypeScript monorepo pattern; raising the
  cap is a one-line change if a real repo exceeds it. walkBindingChain
  consumes the constant so the 5 magic number no longer floats free.

- Replace defs.filter() allocation in MethodRegistry.lookupMethodByOwner
  with a two-pass streaming count + conditional materialization
  (PERF-04). Pure-match and pure-reject arity paths now skip the
  filtered-array allocation entirely; only the discriminating case
  (at least one match AND at least one rejection) pays it.

- Rewrite NOOP_SYMBOL_TABLE in parse-worker.ts and NOOP_SYMBOL_TABLE_SEQ
  in parsing-processor.ts to implement all six SymbolTableReader
  methods (ADV-005). The `as unknown as SymbolTableReader` cast is
  removed in favor of a direct SymbolTableReader annotation, so future
  additions to the interface surface as compile errors on the stubs
  instead of silently falling through.

- type-env.ts getCallableUnionCount and getFirstCallable now take
  `model: SemanticModel` as an explicit argument instead of reaching
  into the enclosing `model!` non-null assertion (KT-003). Callers
  enter via an `if (model)` guard and pass the narrowed reference, so
  the non-null precondition is visible at the type level and the
  closures cannot be accidentally extracted into a context without
  the guard.

- Tier 3 dedup in resolution-context.ts now covers all four index reads
  (classDefs, implDefs, callableDefs, methodDefs) via a pushUnique
  helper (C-03). Previously classDefs and implDefs were spread directly
  without dedup; any theoretical nodeId collision would have produced
  duplicates in globalDefs.

Test infrastructure:

- Extract makeDef / makeMethod factory helpers into
  test/unit/model/helpers.ts (T-07). The four registry/table test
  files now import the shared helper and specialize with overrides,
  removing ~25 lines of duplicated boilerplate and creating a single
  point of maintenance.

New test coverage:

- T-01: c3 BFS fallback — cyclic Python hierarchy that fails c3
  linearization and must fall back to heritageMap.getAncestors() BFS
  order. Added to the lookupMethodByOwnerWithMRO describe block.

- T-02: Tier 2a-named precedence — verifies the binding chain walker
  fires before Tier 2a import-scoped when an aliased import
  `import { User as U } from B` competes with a raw same-name Tier 2a
  hit. Also pins Tier 1 same-file precedence over Tier 2a-named.

- T-03: Tier 3 Function+ownerId dedup — end-to-end test that a Python
  class method emitted as `Function + ownerId` yields exactly ONE Tier
  3 candidate (not two). Companion test pins the fast-path branch for
  hasFunctionMethods === false repos.

- T-06: walkBindingChain guards — circular re-export detection,
  depth-cap exceeded drop, and boundary case at exactly
  MAX_BINDING_CHAIN_DEPTH hops resolving successfully.

All tests added to a new test/unit/model/resolution-context.test.ts
dedicated to ResolutionContext.resolve() tier-precedence invariants.

Full suite: 5708 passing (minus the known Windows LBUG lock flake
that passes in isolation).

---------

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2026-04-12 01:06:55 +01:00
Copilot
d9960c62bf
SM-19: Delete resolveCallTarget — replace with thin dispatcher (#770)
* Initial plan

* SM-19: Replace resolveCallTarget with thin dispatcher

Delete the monolithic resolveCallTarget function (~200 lines) and replace it
with a 15-line thin dispatcher that routes to resolveMemberCall,
resolveStaticCall, or resolveFreeCall. Extract module-alias resolution and
file-based member-call fallback into dedicated helper functions.

- resolveCallTarget body reduced from ~200 lines to ~15 lines
- Extract resolveModuleAliasedCall helper (Python/Ruby module imports)
- Extract resolveMemberCallByFile helper (trait dispatch, overload disambiguation)
- Extract singleCandidate helper (constructor alias fallback, name-based fallback)
- Update unit tests for new dispatcher semantics
- Update doc comments referencing deleted D0-D4 paths

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* SM-19: Add singleCandidate tail fallback for member calls with unresolvable receiver type

Agent-Logs-Url: https://github.com/abhigyanpatwari/GitNexus/sessions/469eac38-b0c0-4a26-a2ff-3eb06299730b

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* fix(SM-19): address all PR #770 review findings + fix CI

Fixes all 5 test failures (2 unit + 3 integration) and addresses 10
review findings from comment 4225312416.

Critical fix — singleCandidate null-route guard
The SM-19 dispatcher chained singleCandidate as an unconditional tail
fallback for member calls with receiverTypeName. This bypassed the
SM-10 R3 null-route contract: when the receiver type IS in the index
but file/owner filtering produced zero matches, the old code returned
null (genuine miss), but the new code fell through to singleCandidate
(false-positive CALLS edge).

Root cause: resolveMemberCallByFile returns null for two semantically
different reasons — (1) type not found in the index at all, and
(2) type found but no candidate matched after narrowing. The dispatcher
treated both as "try the next fallback." The old resolveCallTarget
exited the entire function on case 2.

Fix: after the scoped resolvers both return null, check whether the
receiver type resolves in the index. If it does (case 2), null-route
— the scoped resolvers made the right decision. If it doesn't (case 1,
e.g. PHP 'mixed', dynamic types), singleCandidate is the correct last
resort. ctx.resolve is cached so the check is free.

This fixes:
- Unit: no heritageMap null-route test (was getting 1 edge, expects 0)
- Integration: Rust c.trait_only() negative test
- Integration: 3 PHP heritage + alias tests (singleCandidate correctly
  fires when the receiver type is not in the index)

Performance (findings #1, #2, #3)
- Thread pre-computed tiered result into resolveModuleAliasedCall via
  new tieredOverride parameter — eliminates the duplicate ctx.resolve
  call on every module-alias path.
- Add countCallableCandidates helper that short-circuits at threshold
  without allocating an intermediate array — replaces the
  filterCallableCandidates(...).length > 1 allocation in skipMember.
- resolveMemberCallByFile lookupCallableByName caching deferred to a
  follow-up (finding #2) — the fix requires threading widenCache
  through the file-scoped resolver which is a larger change.

Code quality (findings #4, #5)
- Remove dead code: redundant conditional in resolveMemberCallByFile
  where both branches returned null.
- Move WidenCache type declaration from mid-file (between JSDoc blocks)
  to adjacent to CONSTRUCTOR_TARGET_TYPES with other type declarations.

Formatting
- Applied prettier to call-processor.ts (CI format check was failing).

Verification
- tsc --noEmit clean
- 3188 unit tests pass (0 skipped real tests)
- 1766 resolver integration tests pass
- Zero regressions — all PHP, Rust, and no-heritageMap tests green

Review: https://github.com/abhigyanpatwari/GitNexus/pull/770#issuecomment-4225312416

* fix(SM-19): restore module-alias narrowing and constructor disambiguation

Codex adversarial review on PR #770 surfaced two silent regressions in the
SM-19 thin dispatcher:

Finding 1 [high] — Typed member calls bypassed module-alias narrowing.
When two homonym receiver types are both imported by the caller, the
import-scoped tier no longer narrows and the owner/file resolvers see
genuine ambiguity. The dispatcher null-routed silently, dropping valid
CALLS edges. Fix: consult `resolveModuleAliasedCall` at the top of the
typed-member branch so an active alias on `call.receiverName` picks the
aliased file before the generic resolvers run.

Finding 2 [medium] — Constructor dispatch lost overload disambiguation.
When `resolveStaticCall` bails (ambiguous or ownerless Constructor pool)
and the caller supplied `overloadHints` / `preComputedArgTypes`, the
branch fell straight through to `singleCandidate` — which also bails on
multiple same-arity survivors. Fix: between `resolveStaticCall` and
`singleCandidate`, run constructor-filtered overload disambiguation on
the tiered pool. Only engages when a narrowing signal is present;
preserves SM-10 R3 null-route for genuinely ambiguous cases.

Tests:
- call-processor.test.ts: 3 new dispatcher-level regression tests
  covering real-homonym alias narrowing, constructor overload
  disambiguation with `argTypes`, and null-route control
- symbol-table.test.ts: update `module alias homonyms` test which
  previously codified the Finding 1 regression; now asserts resolution
  to the aliased file's method

Verification: 3191 unit + 2398 integration tests pass; tsc --noEmit
clean; prettier clean.

* refactor(SM-19): address code review findings with clean-code pass

Code review on commit f424685e surfaced one P1 correctness regression and
two P2 maintainability concerns. This commit closes all ten findings:

P1 — Alias helper placement regression
  - resolveModuleAliasedCall now runs as a FALLBACK in the typed-member
    branch, after resolveMemberCall/resolveMemberCallByFile return null.
    Previously it short-circuited BEFORE scoped resolvers, leaking unrelated
    homonyms from the aliased file when a local var coincidentally matched
    a module alias.
  - Added type-file verification guard: alias narrowing only fires when the
    alias target file is among the receiver type's defining files. Prevents
    cross-type false positives and hardens SM-10 R3.

P2 — Thin-dispatcher drift (roadmap Phase 3)
  - Extracted disambiguateByOverloadOrArgTypes shared helper. Centralizes
    the overloadHints → preComputedArgTypes precedence rule used by both
    member and constructor resolvers.
  - Folded constructor overload disambiguation into resolveStaticCall as
    step 4.5 (between the ambiguous-pool bail and the instantiable-class
    fallback). resolveStaticCall now accepts optional overloadHints /
    preComputedArgTypes symmetric with resolveMemberCallByFile.
  - Dispatcher's constructor branch returns to a 2-line delegation.
  - resolveMemberCallByFile now calls the shared helper instead of inlining
    the ternary.

P2 — Missing test coverage
  - owner-scoped wins over alias narrowing (alias with unrelated target
    class must not override unique owner-scoped answer)
  - alias narrowing rejects unrelated target type (type-file guard)
  - alias fallthrough: receiverName not in alias map
  - alias fallthrough: alias target file has no matching method
  (overloadHints-for-constructor variant transitively covered via the
   extracted helper's member-path tests; direct dispatcher test deferred
   as it requires real OverloadHints fixture parsing)

P3 — Clarity and durability
  - Stripped "Codex SM-19 Finding N" prefixes from comments. Replaced with
    durable explanations of WHY each guarded branch exists.
  - Added cross-reference comment at the tail-branch resolveModuleAliasedCall
    call site pointing to the typed-member branch usage.

Verification: 3195 unit + 1766 resolver integration + 2398 full integration
tests pass. tsc --noEmit clean. prettier clean.

Plan: docs/plans/2026-04-11-002-fix-sm19-code-review-findings-plan.md

---------

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2026-04-11 10:20:57 +01:00
Copilot
100858f8c8
feat(SM-18): Delete lookupFuzzy, lookupFuzzyCallable, globalIndex, callableIndex (#769)
* Initial plan

* Update test files for SymbolTable interface changes

Remove lookupFuzzy, lookupFuzzyCallable, globalIndex, and callableIndex
references from all test files. Replace lookupFuzzyCallable with
lookupCallableByName. Update getStats assertions to only expect
{ fileCount }. Remove tests that exclusively tested removed methods.

Files updated:
- symbol-table.test.ts: Remove lookupFuzzy describe block and all
  globalIndex/callableIndex tests, update callable method references
- symbol-resolver.test.ts: Remove SM-16 lookupFuzzy test block,
  update Tier 3 describe title
- type-env.test.ts: Update all mock SymbolTable objects and spy
  variable names
- call-form.test.ts: Update ownerId propagation test

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* feat(SM-18): Remove lookupFuzzy, lookupFuzzyCallable, globalIndex, callableIndex

Remove from SymbolTable interface and implementation:
- lookupFuzzy method
- lookupFuzzyCallable method
- globalIndex Map
- callableIndex Map (renamed to callableByName, backing lookupCallableByName)

Add lookupCallableByName as the targeted replacement for fuzzy callable
lookups. Migrate all production callers:
- resolution-context.ts: lookupFuzzyCallable → lookupCallableByName
- type-env.ts: lookupFuzzyCallable → lookupCallableByName
- call-processor.ts: lookupFuzzy → lookupCallableByName (D2 widen paths)

Remove fuzzyCallCount/fuzzyCallableCallCount stats and globalSymbolCount
from getStats(). Update pipeline.ts logging accordingly.

Memory savings: globalIndex stored every non-Property symbol (typically
the largest index by entry count). Removing it eliminates one Map plus
all its per-name arrays — net savings proportional to unique symbol
count in the project.

Agent-Logs-Url: https://github.com/abhigyanpatwari/GitNexus/sessions/4a658c69-41a9-4d57-8527-50ca544ca967

* fix(SM-18): address all PR #769 review findings

1. type-env.test.ts mock: add missing lookupImplByName + getFiles methods.

2. Macro/Delegate tests: 2 new tests confirm C/C++ Macro and C# Delegate
   are indexed in callableByName.

3. D2 widen path test: module-alias scenario verifying lookupCallableByName
   resolves methods in aliased files that shadow same-file definitions.

4. CALLABLE_TYPES unified: exported from symbol-table.ts (single source of
   truth), imported in call-processor.ts. Removed duplicate
   CALLABLE_SYMBOL_TYPES constant.

5. getStats() observability restored: tier hit counters (tierSameFile,
   tierImportScoped, tierGlobal, tierMiss) replace the removed
   fuzzyCallCount diagnostic.

* chore(SM-18): remove unnecessary `as any` casts on valid NodeLabel types

Macro, Delegate, TypeAlias, Const, and Variable are all valid NodeLabel
values in gitnexus-shared. The casts suppressed type checking without
purpose and signaled false uncertainty.

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2026-04-10 14:56:24 +01:00
Copilot
ab956f113c
feat(SM-15): Wire BindingAccumulator into processCallsFromExtracted for cross-file return type propagation (#763)
* Initial plan

* Initial setup - Phase 9 BindingAccumulator cross-file return type wiring

Agent-Logs-Url: https://github.com/abhigyanpatwari/GitNexus/sessions/7cee6490-090d-4714-8cb5-a704168ff47a

* feat(SM-15): wire BindingAccumulator into processCallsFromExtracted for Phase 9 cross-file return type propagation

Agent-Logs-Url: https://github.com/abhigyanpatwari/GitNexus/sessions/7cee6490-090d-4714-8cb5-a704168ff47a

* fix(SM-15): address all PR #763 review findings

Performance (R1)
- Changed _fileScopeByFile from Map<string, [string,string][]> to
  Map<string, Map<string,string>>. fileScopeGet(filePath, name) is
  now O(1) — replaces the O(n) linear scan + defensive-copy alloc
  that ran once per ConstructorBinding entry. fileScopeEntries()
  reconstructs tuples from Map.entries() for backward compat.
- Updated finalize() dev-mode invariant to compare deduplicated Map
  size rather than raw array length (Map.set deduplicates same-name).

Lifecycle (R2)
- Documented that Phase 9 intentionally reads pre-finalize because
  finalize() cannot move before both the worker consumer (line 984)
  AND the sequential-path writer (line 1061). Pre-finalize reads are
  safe because finalize() is write-lock-only with no side effects.
  Replaced the ambiguous "populated but not yet finalized" comment
  with the full lifecycle ordering explanation.

Sequential-path parity (R3)
- Wired bindingAccumulator into processCalls at line 797 (sequential
  path) so verifyConstructorBindings gets the Phase 9 fallback.
- Added bindingAccumulator parameter to processAssignmentsFromExtracted
  signature and wired it at the pipeline.ts call site (line 1026).
- Both paths now produce identical Phase 9 behavior for the same code.

Tracking comments (R4)
- Added "Overlapping mechanism (N of 3)" cross-references at:
  1. buildImportedReturnTypes (~line 109)
  2. collectExportedBindings (~line 168)
  3. Phase 9 fallback in verifyConstructorBindings (~line 563)
  Each links to the other two and notes future unification.

Language coverage (R5)
- Added 5 new Phase 9 integration test suites in cross-file-binding.test.ts:
  JavaScript, C++, C#, PHP, Ruby. Each uses the existing fixture
  directories and asserts getUser() → User → user.save() resolves.
  Total cross-file binding tests: 52 (was 37).

Quality asymmetry (R6)
- Added inline comment at the Phase 9 fallback noting worker-path
  entries are Tier 0/1 only and that binding accuracy is structurally
  lower for large repos where the worker path dominates.

Tests (+21 new)
- 6 fileScopeGet unit tests (happy path, unknown file/name, mixed
  scopes, post-dispose, duplicate varName last-write-wins)
- 15 integration tests across 5 new language suites

Verification
- tsc --noEmit clean
- 3147 unit tests pass (+6 new)
- 52 cross-file binding integration tests pass (+15 new)
- 1766 resolver integration tests pass
- Zero regressions

Plan: docs/plans/2026-04-10-001-fix-sm15-review-findings-plan.md
Review: https://github.com/abhigyanpatwari/GitNexus/pull/763#issuecomment-4220354242

* fix(SM-15): gate accumulator fallback on resolution tier and fix sequential file-order dependency

Two Codex adversarial reviews identified medium-severity bugs in the Phase 9
BindingAccumulator fallback:

1. Local-first violation: the fallback fired regardless of whether ctx.resolve()
   found same-file candidates, letting an imported callee shadow a local one
   and produce false CALLS edges. Fixed by gating on tiered.tier !== 'same-file'
   and callableDefs.length <= 1.

2. Sequential file-order dependency: processCalls flushed and verified per-file,
   so consumer files processed before their providers missed accumulator bindings.
   Fixed by splitting into a flush pre-pass (all files) then a resolution loop,
   mirroring the worker path's "all appends before any reads" pattern.

Also adds 11 consumer-before-provider integration test fixtures (one per
supported language) and 4 unit tests for tier gating edge cases.

* refactor(SM-15): eliminate duplicated prepare logic in processCalls two-pass split

Replace the duplicated pre-pass + legacy-path code (parse → query → heritage
→ TypeEnv → exports) with a single preparation loop followed by a resolution
loop. Both paths now share the same preparation code — the only conditional
is the accumulator flush.

Side benefit: globalParentMap is now fully populated before any resolution
runs, improving cross-file isSubclassOf accuracy regardless of file order.

Net -118 lines (226 removed, 108 added).

* fix(SM-15): address PR #763 third-pass review findings

1. Update stale dispose() JSDoc — remove forward-reference to Phase 9
   wiring that is now complete; document actual consumers.

2. Add processAssignmentsFromExtracted Phase 9 unit test — verifies the
   accumulator fallback produces ACCESSES write edges when the SymbolTable
   has no returnType for the callee.

---------

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2026-04-10 10:29:31 +01:00
Copilot
bb68cc1eb0
Extract resolveMemberCall from resolveCallTarget (SM-11) (#744)
* Initial plan

* feat(SM-11): extract resolveMemberCall from resolveCallTarget

- Create resolveMemberCall(ownerType, methodName, currentFile, ctx, heritageMap?)
  that uses owner-scoped + MRO resolution only (no fuzzy lookup)
- resolveCallTarget delegates member calls (D0 path) to resolveMemberCall
- walkMixedChain uses resolveMemberCall for owner-scoped member-call resolution
- Add 7 unit tests for resolveMemberCall covering direct, inherited, MRO,
  null cases, and confidence tier assertions
- Export resolveMemberCall for external use

Agent-Logs-Url: https://github.com/abhigyanpatwari/GitNexus/sessions/3b7889a9-5f2f-4572-8904-45084210f10d

* fix(SM-11): address PR #744 review

Blocking fixes:

- B1: Revert unrelated package-lock.json gitnexus-shared addition

- B2: Document confidence-tier semantic change on resolveMemberCall

Performance / coupling fixes:

- S1: walkMixedChain now calls resolveMethodByOwner directly (hot path) to avoid throwaway ResolveResult allocation per chain step

- S2: Thread tier from resolveMethodByOwner via { def, tier } tuple; eliminates double ctx.resolve

Alignment with semantic-model plan (Phase 3 target):

- resolveMethodByOwner now iterates ALL class-like candidates from ctx.resolve, deduplicating matches by nodeId. Absorbs D4's ownerId-filtering into the owner-scoped path.

- Handles homonym classes (two Users in different files) without falling through to D1-D4 fuzzy widening

- Shared-ancestor MRO walks automatically dedup (both homonyms walk to same base method)

- Unified direct-vs-MRO lookup under a single canWalkMRO check

Tests added:

- T1: Three D0 skip-condition tests via new _resolveCallTargetForTesting internal export (overloadHints, preComputedArgTypes, hasActiveModuleAlias)

- T2: Rust qualified-syntax null test (trait-inherited method) + direct impl control

- T3: C++ leftmost-base diamond inheritance test

- B2 lock-in: cross-file class tier assertion

- Homonym disambiguation: only-one-owns-method, both-own-method ambiguity, shared-ancestor MRO convergence

Verification:

- tsc --noEmit: clean

- vitest run test/unit/: 3014 passed

- vitest run test/integration/resolvers/: 1746 passed

* test(SM-11): address second PR #744 review round + per-language integration tests

Review fixes (https://github.com/abhigyanpatwari/GitNexus/pull/744#issuecomment-4211877593):

P1 (Performance): Replace Map allocation in resolveMethodByOwner with a firstDef+ambiguous flag pattern. Zero allocation for the common single-candidate case on the hot path — the previous Map approach allocated on every member call regardless of whether deduplication was needed.

P2 (Test gap): Strengthen the module-alias D0 skip test with a homonym fixture (two Users in different files). Previously the test passed whether or not D0 was actually bypassed; the new version proves D0 must be skipped by showing that resolveMemberCall directly returns null (ambiguous) but D1-D4 with alias narrowing picks the right one. Also fixes the underlying D2-vs-alias widening interaction: when filteredCandidates was narrowed by module-alias disambiguation, D2 no longer widens back to the full fuzzy pool (introduces aliasNarrowed boolean flag).

L1 (Language coverage): Add C# and Kotlin implements-split tests at the resolveMemberCall layer.

L2 (Maintainability): Export OverloadHints as @internal so the test can use a direct cast instead of fragile Parameters<...> type inference.

Per-language integration tests:

- rust-child-extends-parent: Direct impl method resolution via D0 (with honest documentation of the trait-method-as-Function gap that is Phase 5 / SM-16 scope)

- java-interface-default-method: User implements Validator with default method resolved via implements-split MRO

- csharp-interface-default-method: Same pattern for C# 8.0+ default interface methods

- kotlin-interface-default-method: Same pattern for Kotlin interfaces with default implementations

- python-multi-level-mro: 3-level C3 linearization (Grandparent ← Parent ← Child)

- cpp-diamond-inheritance: Classic diamond (Base ← A, B ← Derived) via leftmost-base MRO

Verification:

- tsc --noEmit: clean

- vitest run test/unit/: 3015 passed

- vitest run test/integration/resolvers/: 1763 passed (+17 new per-language tests)

* fix(SM-11): Codex adversarial review corrections + deeper D0 fixes

Addresses the three high-severity findings from the Codex adversarial review of PR #744 (https://github.com/abhigyanpatwari/GitNexus/pull/744#issuecomment-4212075120), plus four deeper fixes discovered during regression triage. All discovered issues are now addressed end-to-end rather than papered over with tail-return fallbacks.

Codex review findings:

R1 (C++ diamond): The cpp-diamond-inheritance fixture used non-virtual inheritance, which is genuinely ambiguous in real C++ (two Base subobjects). Changed A and B to use 'virtual public Base' so there's a single shared Base subobject and d.method() is an unambiguous call that the leftmost-base MRO walk correctly resolves.

R2 (C# default-interface): The csharp-interface-default-method fixture called user.Validate() via a User-typed variable, but C# does not inherit default interface methods as callable class members — the call is only valid through an interface-typed variable. Changed App.cs to 'IValidator user = new User(...)' which is the idiomatic dispatch pattern.

R3 (resolveCallTarget tail-return): When D1-D4 receiver filtering produced zero file-matched and zero owner-matched candidates for a member call, the function fell through to the permissive single-candidate tail return — silently emitting CALLS edges for methods that don't belong to the receiver. Added an explicit null-route inside the D1-D4 block that fires only when both filters yielded 0.

R4 (Rust negative assertion): Added the c.trait_only() negative integration test in rust.test.ts demonstrating that direct member calls on Rust structs do not walk trait ancestry. The test now passes because of R3 (previously fell through to the tail return).

Regression triage discoveries:

1. D0 was dead code on the sequential pipeline. The sequential path sets overloadHints for every call regardless of whether the method is overloaded, and the original D0 skip condition '!overloadHints && !preComputedArgTypes' was therefore always false. The Java/C#/C++ SM-9/SM-10 inheritance tests were passing ONLY via the tail-return fallback. Fix: narrow the skip to 'overloadHints && filteredCandidates.length > 1' — skip D0 only when there are actually multiple candidates that need overload disambiguation.

2. lookupMethodByOwner couldn't disambiguate arity-differing overloads (e.g. C++ greet() vs greet(string)). With D0 now firing on the sequential path, same-name/different-arity overloads would collapse to an arbitrary first pick. Fix: added an optional argCount parameter to lookupMethodByOwner + lookupMethodByOwnerWithMRO that filters the overload set by parameterCount/requiredParameterCount before the returnType dedup.

3. Python and Rust class methods are captured as Function nodes (not Method) with ownerId set to the class. The methodByOwner index only accepted 'Method' and 'Constructor' types, so Python class methods and Rust trait methods were invisible to D0. Fix: extended the methodByOwner indexing condition to include 'Function' when ownerId is set. This also unlocks the Rust trait-method negative assertion by ensuring the qualified-syntax MRO strategy has something to return null for.

4. D0 was being skipped when a local variable shadowed an imported module name (Python 'from models.c import C; c = C()' creates both a module alias 'c → models/c.py' AND a typed local 'c'). Fix: the D0 skip now gates on 'aliasNarrowed' (a new boolean tracking whether the alias block actually narrowed filteredCandidates) instead of 'hasActiveModuleAlias'. If the method isn't in the aliased module, the receiver is a typed local variable and D0 should run.

5. PHP trait walk missed the HasTimestamps trait because lookupClassByName did not include 'Trait' type. buildHeritageMap uses lookupClassByName to resolve parent names, so 'BaseModel use HasTimestamps' was failing to register an ancestor edge for BaseModel → HasTimestamps. Fix: added 'Trait' to CLASS_TYPES. The trait is now a valid class-like type for heritage resolution (PHP use, Rust impl Trait for Struct, Scala traits).

Test updates:

- Updated the 'no heritageMap' unit test in call-processor.test.ts to assert the correct null-route behavior instead of the old tail-return fallback.

- Added a new unit test asserting Trait inclusion in the class set.

- Updated the 'does NOT include other type-like labels' test to remove Trait from its rejection set.

Verification:

- tsc --noEmit: clean

- vitest run test/unit/: 3016 passed (+1 new Trait inclusion test)

- vitest run test/integration/resolvers/: 1764 passed (+1 new Rust negative assertion)

- Zero regressions

---------

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2026-04-09 09:52:12 +01:00
Copilot
d9ba9aa998
SM-10: Add MRO fast path before D2 fuzzy widening in resolveCallTarget (#741)
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* Initial plan

* Add MRO fast path before D2 fuzzy widening in resolveCallTarget

When receiverTypeName is known, try resolveMethodByOwner (owner-scoped
+ MRO lookup) before falling back to the expensive lookupFuzzy in D2.
This short-circuits cross-file member call resolution for the common
non-overloaded case.

The fast path is skipped when overload disambiguation hints are
available (overloadHints or preComputedArgTypes) to avoid picking the
wrong overload for same-return-type overloaded methods.

Passes heritageMap to resolveCallTarget from all 4 call sites:
- Language seed path (processCalls)
- Sequential path (processCalls)
- walkMixedChain fallback
- Worker path (processCallsFromExtracted)

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* fix(SM-10): address PR #741 review

Correctness:
- Module-alias guard for D0. When call.receiverName matches an active
  entry in ctx.moduleAliasMap for the current file, D0 is now skipped
  and resolution falls through to D1-D4 which respects the
  alias-narrowed candidate pool. Prevents a homonymous class in a
  different file from being picked by ctx.resolve(receiverTypeName)
  inside resolveMethodByOwner. New unit test pins the contract.

Unit tests (call-processor.test.ts — 3 new):
- D0 hit: child.parentMethod() resolves via MRO walk when
  heritageMap is provided.
- D0 skipped: same scenario still resolves via D1-D4 when heritageMap
  is undefined (backward-compat guard).
- Module-alias guard: two files both define class User with a save()
  method; 'import auth_mod as auth' in app.py must resolve
  auth.user.save() to auth_mod.py, not user_mod.py.

Integration language coverage (+3 fixtures/tests):
- swift-child-extends-parent — first-wins, gated on swiftAvailable.
- ruby-child-extends-parent   — first-wins.
- php-child-extends-parent    — first-wins (uses ParentClass since
  'Parent' is a PHP reserved word).

* test(SM-10): address second PR #741 review round

Unit tests (call-processor.test.ts, +2 new):
- overloadHints guard: Java source with two same-return-type overloads
  method(int) and method(String), int added first so lookupMethodByOwner
  would return it. processCalls auto-generates overloadHints for Java,
  forcing D0 to be skipped. o.method("hello") must resolve to
  method(String) via literal-inferred disambiguation.
- preComputedArgTypes guard: worker-path equivalent via
  processCallsFromExtracted with ExtractedCall.argTypes=['String'].
  Same two overloads, same correctness guarantee.

Integration tests (+2 fixtures + test blocks):
- go-child-extends-parent    — struct embedding, first-wins
  (Go structs are labeled 'Struct' not 'Class' in GitNexus).
- dart-child-extends-parent  — extends, first-wins, gated on
  dartAvailable like other Dart tests.

Documentation:
- Expanded the fallthrough comment in resolveMethodByOwner to clarify
  that unknown-extension paths land on plain lookupMethodByOwner
  without an ancestor walk, and that D1-D4 still runs on D0 miss.

* test(SM-10): D0 miss with heritageMap present falls through to D1-D4

Closes the last remaining gap from PR #741 review round 3. The existing
'D0 skipped' test only covered the heritageMap=undefined case, leaving
the miss-with-heritageMap path implicitly covered by integration tests
only. This adds a focused unit test where:

- Class Obj has a method doWork findable via tiered resolution
  (import-scoped) but intentionally NOT registered in methodByOwner
  (no ownerId), so lookupMethodByOwner misses.
- heritageMap is provided but built from an empty heritage array, so
  getAncestors(class:Obj) returns []. The MRO walk yields no parents.
- lookupMethodByOwnerWithMRO therefore returns undefined → D0 miss.
- D1 resolves the receiver type; D2 widens via lookupFuzzy;
  D3 file-filter picks the single matching candidate.
- A CALLS edge must still be emitted — D0 miss must not swallow
  the call.

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: magyargergo <11230420+magyargergo@users.noreply.github.com>
Co-authored-by: Gergo Magyar <gergomagyar@icloud.com>
2026-04-08 23:24:07 +01:00
Copilot
b75e76d44a
feat(SM-8): Build HeritageMap from accumulated ExtractedHeritage[] (#739)
* Initial plan

* feat(SM-8): add HeritageMap with MRO-aware parent/ancestor lookup

- New heritage-map.ts: HeritageMap interface with getParents() and getAncestors()
- buildHeritageMap() consumes ExtractedHeritage[], resolves names via lookupClassByName
- Cycle protection and bounded depth (MAX_ANCESTOR_DEPTH=32) in getAncestors
- Worker path: HeritageMap built from deferredWorkerHeritage, threaded into processCallsFromExtracted
- Sequential path: Heritage accumulated across chunks, HeritageMap built after all chunks, passed to processCalls
- 18 unit tests covering parent lookup, multi-level, diamond, cycles, missing parent, bounded depth

Agent-Logs-Url: https://github.com/abhigyanpatwari/GitNexus/sessions/c413e0a3-5d63-4ddb-8ece-02fe6ed99efd

Co-authored-by: magyargergo <11230420+magyargergo@users.noreply.github.com>

* test: rename cycle test for clarity per code review

Agent-Logs-Url: https://github.com/abhigyanpatwari/GitNexus/sessions/c413e0a3-5d63-4ddb-8ece-02fe6ed99efd

Co-authored-by: magyargergo <11230420+magyargergo@users.noreply.github.com>

* refactor(SM-8): merge implementor map into heritage map

- Add `getImplementorFiles(interfaceName)` to HeritageMap interface
- Build implementor index (interface name → file paths) alongside parent
  lookup in `buildHeritageMap`, using same `resolveExtendsType` logic
- Remove `ImplementorMap` type, `buildImplementorMap`, `mergeImplementorMaps`
  from call-processor.ts
- Update `findInterfaceDispatchTargets`, `processCalls`, and
  `processCallsFromExtracted` to use HeritageMap for both parent
  lookup and implementor dispatch
- Pipeline: single `buildHeritageMap` call replaces separate
  buildImplementorMap + buildHeritageMap for both worker and
  sequential paths
- Migrate implementor tests from call-processor.test.ts to
  heritage-map.test.ts (4 new getImplementorFiles tests)
- Update interface dispatch test to use buildHeritageMap instead
  of hand-constructed ImplementorMap

Agent-Logs-Url: https://github.com/abhigyanpatwari/GitNexus/sessions/085dffb4-b31e-4aa5-9aa3-4314bc0010e7

Co-authored-by: magyargergo <11230420+magyargergo@users.noreply.github.com>

* test: rename implementor test for clarity per code review

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* fix(SM-8): address PR #739 review comments

- pipeline.ts: cache chunk file contents from Pass 1 to eliminate
  double-read of sequential chunks in Pass 2. Peak memory drains
  incrementally as Pass 2 processes each chunk.
- heritage-map.ts: document Rust trait-impl omission from implementor
  index and the interface-name collision limitation.
- heritage-map.test.ts: add six tests covering the extends->IMPLEMENTS
  path across C# (interfaceNamePattern), Swift (heritageDefaultEdge),
  Java (symbol-table Interface lookup), Kotlin, PHP, and the Rust
  trait-impl omission.
- pipeline.ts: comment why the heritage accumulation uses a manual
  push loop instead of spread (ref #650).

* test(SM-8): address second PR #739 review pass

- Add TypeScript implements test to getImplementorFiles (closes
  the .ts coverage gap flagged by the bot reviewer).
- Tighten deep-chain boundary assertion from toBeLessThanOrEqual(32)
  to toBe(32) so a future regression returning fewer ancestors
  fails loudly. Added an ancestors[31] === 'class:Level32' check
  to pin the upper boundary.

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: magyargergo <11230420+magyargergo@users.noreply.github.com>
Co-authored-by: Gergo Magyar <gergomagyar@icloud.com>
2026-04-08 19:00:08 +01:00
MyShining
3388ae16d7
[cli] Replace Phase P class checks with class lookup index (#734)
* refactor(call-processor): use class lookup index in phase p

* test(call-processor): cover class lookup fallback

---------

Co-authored-by: 许恩宁 <xuenning@qiyi.com>
2026-04-08 14:48:54 +01:00
Chirag Nighut
e2de9271fc
feat(java): method references, worker overload disambiguation, interface dispatch (#540)
* feat(java): method references + worker overload disambiguation (TypeEnv + argTypes)

Fix two Java gaps: (1) method references (obj::method) via
  tree-sitter @call + parseJavaMethodReference wired through extractLanguageCallSiteSeed for parse-worker and call-processor; (2) overloaded calls with typed
  non-literal args by extending OverloadHints with TypeEnv for identifiers and adding ExtractedCall.argTypes from extractCallArgTypes on the worker path with
  matchCandidatesByArgTypes (inferJvmLiteralType remains for literals).

* test(csharp): expect interface-dispatch edge for IRepository.Save in heritage fixture

* refactor(ingestion): move parseJavaMethodReference to call-sites/java.ts

* refactor(ingestion): defer worker call resolution until implementor map is complete

* style: prettier + remove unused import for CI quality checks

Made-with: Cursor

* fix(ingestion): implementor map for C# base_list + sequential pipeline path

- buildImplementorMap: treat extends rows as implements when resolveExtendsType
  says IMPLEMENTS (worker heritage mirrors parse-worker, all base_list as extends)
- Worker path: pass ctx into buildImplementorMap(deferredWorkerHeritage, ctx)
- Sequential path: extract heritage before processCalls and pass implementor map
  so small repos get interface-dispatch CALLS (fixes csharp-proj integration test)

Made-with: Cursor

* perf(pipeline): accumulate sequential implementor map without O(E) per chunk

- Merge buildImplementorMap(chunk heritage) into one map each sequential chunk so
  work is O(heritage) per chunk and interface dispatch sees prior chunks (worker parity)
- Drop unused globalImplementorMap + redundant merge after worker pass

Made-with: Cursor
2026-03-28 16:59:28 +00:00
Gergő Magyar
bf09eab95b
feat: configure prettier with pre-commit hook (#563)
* feat: configure prettier with pre-commit hook integration

Add prettier, lint-staged, and prettier-plugin-tailwindcss at the repo
root with husky pre-commit hook integration. Moves husky from
gitnexus/ to root package.json for reliable hook installation.

- Root package.json with prepare/format/format:check scripts
- .prettierrc with endOfLine:lf and tailwindStylesheet for TW v4
- .prettierignore excluding fixtures, vendor, generated, *.d.ts, *.md
- .gitattributes enforcing LF line endings for Windows consistency
- Pre-commit hook uses direct node_modules/.bin/ paths (no npx)

* style: apply prettier formatting to entire codebase

One-time bulk format. No logic changes.
Use .git-blame-ignore-revs to skip this commit in git blame.

* chore: add .git-blame-ignore-revs for prettier format commit

* perf: pre-commit hook runs only tests related to staged files

Use vitest --related to scope test execution to tests that import
the changed files, instead of running the full suite on every commit.

* perf: remove vitest from pre-commit hook, keep in CI only

Pre-commit now runs lint-staged + tsc only. Tests run in CI
(ci-tests.yml) where they belong — keeps commits fast.

* ci: add prettier format check to quality workflow

PRs will now fail if code isn't formatted with prettier.
2026-03-28 14:58:04 +00:00
marxo126
c437acf6bb
feat: deep flow detection — consumer access tracking, middleware chains, error shapes, api_impact tool (#482) 2026-03-23 22:13:48 +00:00
Gergo Magyar
fff716dd92 feat(type-resolution): Phase 14 enhancements — single-pass seeding, Tarjan's SCC, cross-file return types
E0: Fix AST cache thrashing in re-resolution loop (was creating size-1
cache per file), batch file reads per topological level, add
MAX_CROSS_FILE_REPROCESS=2000 cap for adversarial repos.

E1: seedCrossFileReceiverTypes() — enrich ExtractedCall.receiverTypeName
from ExportedTypeMap+namedImportMap in O(1) Map lookups, eliminating
re-parse for ~80-90% of single-hop cross-file receiver types.

E2: computeImportCycleSCCs() — iterative Tarjan's SCC on cycle subgraph
from Kahn's output. Dev-mode diagnostic logging of individual import
cycle components.

E3: buildImportedReturnTypes() + ReturnTypeLookup extension — cross-file
return type propagation with corrected local-first priority (SymbolTable
checked first, cross-file fallback only on 0 matches, ambiguous 2+
returns undefined).

E4: PARALLEL_RE_RESOLUTION_THRESHOLD constant, timing metrics, worker
parallelization design comments (deferred implementation).

24 new tests (6 E1 + 6 E2 + 7 E3 unit + 5 E3 integration). All 3478
tests pass.
2026-03-20 12:00:36 +00:00
Gergő Magyar
604b575e4b
feat: Phase 7 type resolution — return-aware loop inference & PHP class-property iterables (#341)
* feat(type-resolution): Phase 7.1+7.2 foundation — ReturnTypeLookup, context object, pendingCallResults

- Move extractReturnTypeName + helpers from call-processor.ts to type-extractors/shared.ts
  (breaks circular import risk: call-processor → type-env → type-extractors → call-processor)
- Add SymbolTable.lookupFuzzyCallable(name) — lazy callable-only index, O(1) per call,
  invalidated on add(); avoids per-call .filter() on lookupFuzzy results
- Add ReturnTypeLookup interface (conservative: undefined when 0 or 2+ callables match)
- Add ForLoopExtractorContext interface — replaces 4 positional params with context object;
  update all 10 language extractor implementations (go, ts, py, jvm×2, cs, rs, rb, php, c-cpp)
- Add PendingAssignment discriminated union (kind: 'copy' | 'callResult');
  update PendingAssignmentExtractor in all 9 language extractors that implement it
- Wire buildTypeEnv: build ReturnTypeLookup from optional symbolTable; split pendingAssignments
  into pendingCopies + pendingCallResults; add Tier 2b call-result propagation loop
- Update call-processor.test.ts to import extractReturnTypeName from shared.ts

* feat(type-resolution): Phase 7.3 — call_expression iterables in for-loop extractors (7 languages)

Extends for-loop type extraction in all 7 typed-iteration languages to
resolve element types when the iterable is a direct function call.

**New capability**: `for (var u : getUsers())` in Java, `for u in get_users()`
in Python, `for user in getUsers()` in TypeScript, etc. now resolve
`u`/`user` to the callee's return element type via lookupRawReturnType +
extractElementTypeFromString.

Changes per language:
- types.ts: extend ReturnTypeLookup with lookupRawReturnType (raw return
  string for container-type extraction); update ForLoopExtractorContext
  with returnTypeLookup field
- type-env.ts: implement lookupRawReturnType on the concrete ReturnTypeLookup
  built in buildTypeEnv (same guards as lookupReturnType, no extractReturnTypeName)
- go.ts: call_expression branch in range_clause — identifier func or
  selector_expression method; existing isChannelType guards updated
- typescript.ts: identifier fn branch inside call_expression handler
- python.ts: identifier fn branch inside call handler
- jvm.ts (Java): method_invocation without object field in enhanced_for_statement
- jvm.ts (Kotlin): simple_identifier callee branch in call_expression node
- csharp.ts: identifier fn branch in invocation_expression handler
- rust.ts: identifier func branch in call_expression handler (alongside
  existing field_expression/method-call path)

All branches follow the same conservative pattern:
  lookupRawReturnType(callee) → extractElementTypeFromString → bind loop var

* feat(type-resolution): Phase 7.4 — PHP \$this->property iterable via @var class property scan

Adds Strategy C to PHP's extractForLoopBinding for the pattern:

  foreach (\$this->property as \$item)

when Strategy A (resolveIterableElementType) and Strategy B (scopeEnv lookup)
both fail to find the element type.

Strategy C: when the iterable is a member_access_expression with object '$this',
walk up the AST to the enclosing class_declaration, scan its declaration_list
for a property_declaration whose variable_name matches the property, and extract
the element type from:
  1. PHPDoc @var annotation on a preceding comment sibling (/** @var User[] */)
  2. PHP 7.4+ native type field (e.g. UserRepo \$repo — skips generic 'array')

This eliminates the @param workaround that was previously required in the
php-foreach-member-access fixture (which used @param User[] \$users on the method
to populate the method's scopeEnv with a \$users binding).

New helpers in php.ts:
- PHPDOC_VAR_RE: regex for @var extraction
- extractClassPropertyElementType: reads @var or native type from a property_declaration
- findClassPropertyElementType: scans class body for a named property

Tests added (type-env.test.ts):
- PHP: resolves from @var User[] without @param workaround
- PHP: conservative — no binding for unknown property
- PHP: multi-class file — both classes resolve independently

Fixture updated (php-foreach-member-access/App.php):
- Removed the @param User[] \$users workaround from processMembers()
- Test now validates the natural class-property-based resolution path

* docs: mark Phase 7 complete in type-resolution-roadmap.md

Records that 7A (call_expression iterables, 7 languages), 7B (PHP
$this->property via @var scan), and 7C (ReturnTypeLookup + context object)
are all shipped. Adds implementation notes and strikethroughs on resolved
language-specific gaps.

* fix(docs): update project references to feat-phase7-type-resolution in AGENTS.md and CLAUDE.md

* feat(type-resolution): Phase 7.5 — PHP call_expression foreach + integration tests for 7 languages

Add integration test coverage for Phase 7.3's call_expression iterable
resolution across all 7 languages (Go, TypeScript, Python, Java, Kotlin,
PHP, Rust). Each test creates a fixture with competing User/Repo classes
that both define save(), then verifies for-loop iteration over a function
call's return value resolves to the correct class.

PHP was missing function_call_expression support in its for-loop extractor.
Three changes fix this:
- php.ts extractForLoopBinding: handle function_call_expression and
  member_call_expression iterables via returnTypeLookup
- php.ts normalizePhpReturnType: preserve array notation (User[]) in
  SymbolTable so lookupRawReturnType returns useful container types
- parse-worker.ts + parsing-processor.ts: upgrade uninformative AST
  return types (array, iterable) with PHPDoc @return annotations

35 new integration tests (5 per language), 2525 total tests passing.

* fix(type-resolution): address PR #341 review findings — PHP asymmetry + dormant infrastructure docs

- Replace normalizePhpType with extractElementTypeFromString in PHP call-expression
  foreach paths, aligning with all 6 other language extractors and preventing
  incorrect binding of bare non-container types like User
- Add NOTE comments clarifying pendingCallResults Tier 2b is infrastructure-ready
  but no extractor populates it yet
- Expand Go channel-type comments explaining why non-channel assumption is safe

* fix(type-resolution): address verification review — docs accuracy + PHP fallback guard

- Roadmap lines 86/100: correct pendingCallResults from "active" to "dormant infrastructure (Phase 9)"
- type-resolution-system.md line 363: update to reflect Phase 7.3 loop inference is delivered
- type-resolution-system.md line 409: clarify for-loop call-expression resolution (done) vs general assignment propagation (pending)
- php.ts:127: add declaration_list type guard on fallback to prevent silent wrong results
2026-03-18 08:39:38 +00:00
Gergő Magyar
f0132c1077
feat: Phase 6 type resolution — for-loop Tier 1c, pattern matching, container descriptors, 10-language coverage (#318)
* feat: Phase 6 type resolution — pattern matching, for-loop Tier 1c, coverage completion

- Add patternBindingNodeTypes gate to LanguageTypeConfig for 50% perf improvement
- Expand ForLoopExtractor signature with optional declarationTypeNodes + scope
- Add extractElementTypeFromString shared utility for container type parsing
- Python match/case: extractPatternBinding for `case User() as u:` pattern
- C# refactor: move is_pattern_expression from extractDeclaration to extractPatternBinding
- Ruby: add extractPendingAssignment for assignment chain propagation
- TS/JS: add for-loop Tier 1c for `for (const user of users)` with User[] inference
- Python: add for-loop Tier 1c for `for user in users:` with type annotation inference
- Go: add for-loop Tier 1c for `for _, user := range users` with []User inference
- Fix 'Property' as any stale cast in call-processor.ts
- Add dual return-type string length cap (2048 pre-cap, 512 post-cap)
- Add chain call integration tests for C#, Go, Rust, Python, JS, C++
- Add Python match/case integration test fixtures
- 27 new extractElementTypeFromString unit tests
- 3 for-loop edge cases skipped (declarationTypeNodes scope key lookup)

* fix: address code review findings for Phase 6

- Add missing patternBindingNodeTypes to C# typeConfig (perf gate)
- Add 2048-char input length guard to extractElementTypeFromString
- Skip Python match/case integration tests (call extraction needs query updates)

* reorganise

* fix: Phase 1 bug fixes — Go range semantics, typed_parameter, bracket depth

- Go single-var range correctly returns early for slices/maps (index, not element)
- Go single-var range on channels correctly resolves element type
- Added map_type and channel_type to extractGoElementTypeFromTypeNode
- Added isChannelType helper for channel detection before skip decision
- Added 'typed_parameter' to TYPED_PARAMETER_TYPES for Python annotated params
- Fixed bracket depth tracking in extractElementTypeFromString — only match
  selected closeChar at depth 0, return undefined for mismatched brackets
- Un-skipped 3 prematurely skipped tests (TS local const, Python List/Sequence)
- Added tests for map range, single-var range semantics, bracket edge cases

* refactor: Phase 2 architecture — shared helper, required params, decoupled type nodes

- Extract resolveIterableElementType shared helper in shared.ts implementing
  3-strategy fallback (declarationTypeNodes → scopeEnv string → AST walk)
- Refactor TS, Python, Go extractors to use shared helper (eliminates 3x duplication)
- Make ForLoopExtractor params required (aligned with PatternBindingExtractor)
- Update Java, Kotlin, C# extractor signatures to accept required params
- Decouple declarationTypeNodes from scopeEnv — capture raw type annotation
  nodes BEFORE extractDeclaration for container types (User[], []User, List[User])
- Hybrid approach: direct name extraction + keysBefore fallback for multi-declarator
- Document declarationTypeNodes invariant change (superset of scopeEnv)

* feat: Phase 3 partial — Rust for-loop + C# var foreach Tier 1c

- Rust: add extractForLoopBinding with for_expression support
  - Handles &users, &mut users via reference_expression unwrapping
  - extractRustElementTypeFromTypeNode: generic_type, reference_type, slice/array
  - findRustParamElementType: AST walk with reference/mut pattern unwrapping
  - 4 unit tests (Vec<User>, &[User], range expr negative, no-annotation negative)

- C#: upgrade foreach to handle var (implicit_type) via Tier 1c
  - extractCSharpElementTypeFromTypeNode: generic_name, array_type, nullable_type
  - findCSharpParamElementType: AST walk to method_declaration parameters
  - 3 unit tests (var foreach, explicit type regression, no-annotation negative)

* feat: Phase 3 complete — all language gaps + pattern matching

Kotlin Tier 1c:
- Unannotated for-loop resolves via shared helper
- extractKotlinElementTypeFromTypeNode handles type_projection unwrapping
- findKotlinParamElementType walks to function_declaration

Java Tier 1c:
- var foreach resolves via shared helper
- extractJavaElementTypeFromTypeNode handles generic_type, array_type
- findJavaParamElementType walks to method_declaration

TypeScript:
- readonly User[] unwrapped via readonly_type → array_type recursion

C# switch patterns:
- declaration_pattern added to patternBindingNodeTypes
- extractPatternBinding handles standalone declaration_pattern (switch case/expr)

Rust match arms:
- match_arm added to patternBindingNodeTypes
- extractPatternBinding extended with match_arm → match_expression parent traversal

Python:
- as_pattern tries childForFieldName('alias') before positional fallback

Tests: 237 pass (was 224), 13 new tests added

* feat: Phase 4 — known limitation tests, match arm fix, final verification

- Fix Rust match_arm pattern extraction: unwrap match_pattern to get
  tuple_struct_pattern inside (tree-sitter-rust wraps in match_pattern node)
- Add first-writer-wins regression test for match arm scope leakage
- Add 5 documented skip tests for known limitations:
  - TS destructured for-of (tuple destructuring)
  - Python tuple unpacking in for-loops
  - TS instanceof narrowing (block-level scoping)
  - Rust for with .iter() (method call iterable)
  - Ruby block parameters (closure param inference)

Final: 238 passed, 5 skipped (documented limitations), tsc clean

* test: integration tests for all Phase 6 language gaps + fix Rust param pattern field

Integration test fixtures and tests (30 new tests, all with exact match + negative):

Rust for-loop (5 tests):
- for user in &users with Vec<User> → User#save, negative Repo#save
- for repo in &repos with Vec<Repo> → Repo#save, negative User#save

Rust match arm (5 tests):
- match opt { Some(user) => user.save() } → User#save, negative Repo#save
- if let Ok(repo) = res → Repo#save, negative User#save

C# var foreach (5 tests):
- foreach (var user in users) with List<User> → User#Save, negative Repo#Save
- foreach (var repo in repos) with List<Repo> → Repo#Save

C# switch pattern (4 tests):
- is User user → User#Save, case Repo repo → Repo#Save

Kotlin unannotated for (4 tests):
- for (user in users) with List<User> → user.save, negative repo.save

Go map range (3 tests):
- for _, user := range userMap with map[string]User → User#Save, negative

TypeScript readonly (4 tests):
- for (const user of users) with readonly User[] → user.save, negative

Bug fix: type-env.ts parameter branch now falls back to childForFieldName('pattern')
for Rust parameters (Rust uses 'pattern' not 'name' for parameter names)

* test: add assertion bodies to known limitation skip tests

Convert empty skip test stubs to proper tests with parse/buildTypeEnv/expect
assertions following the codebase convention (e.g., call-processor.test.ts:319).
Each skip test now documents the exact expected behavior, so removing .skip
will cause a meaningful failure when the limitation is eventually fixed.

Also clarify Python integration skip tests as call-extraction issues (not
type-env) and Swift integration skips as build-dep issues (self/super
resolution code already exists in type-env.ts).

* feat: resolve 4 known limitation skip tests + method-aware type arg selection

Unskip 4 of 5 type-env known limitations with full integration test coverage:

1. TS destructured for-of: handle array_pattern by binding last named child
   to element type. Fix Map<K,V> to return last generic arg (value type).
2. Python dict.items() loop: handle `call` iterables + `pattern_list` left
   side. Fix dict[K,V] extraction via type_parameter with last-arg heuristic.
   Unwrap `type` wrapper in extractPyElementTypeFromAnnotation.
3. TS instanceof narrowing: add extractPatternBinding for binary_expression
   with positional child access. First-writer-wins (not block-scoped).
4. Rust .iter() for-loops: handle call_expression in for_expression value
   node by extracting receiver from field_expression.

Method-aware type arg resolution:
- Add TypeArgPosition ('first'|'last') to resolveIterableElementType
- .keys()/.keySet()/.Keys → first type arg (key); all else → last (value)
- Thread position through all 3 strategy callbacks in TS/Rust/Python
- Add predefined_type to extractSimpleTypeName for TS primitives (string etc)

New fixtures: rust-iter-for-loop, typescript-destructured-for-of,
typescript-instanceof-narrowing, python-dict-items-loop.
248 unit tests pass (6 new), 1 skip (Ruby block params).

* feat: container descriptor table for generic type arg resolution

Replace simple KEY_METHODS heuristic with CONTAINER_DESCRIPTORS table
that maps 30+ container types across all languages to their type parameter
semantics per access method.

Key improvements:
- Container-aware resolution: HashMap.iter() correctly yields V (arity 2),
  while Vec.iter() yields T (arity 1) — same method, different semantics
- Cross-language coverage: Map/HashMap/BTreeMap/dict/Dict/Dictionary/
  ConcurrentHashMap + List/Vec/Set/HashSet/Queue/Deque/Stack etc.
- Method categorization: keyMethods (keys/keySet/Keys) vs valueMethods
  (values/get/pop/iter/first/last) per container type
- Fallback for unknown containers: still uses method name heuristic,
  so MyCache<K,V>.keys() correctly returns first arg
- Exported getContainerDescriptor() for future heritage-chain lookups

Each language extractor now passes containerTypeName from scopeEnv to
methodToTypeArgPosition for descriptor-aware resolution.

252 unit tests pass (4 new descriptor tests), 1 skip (Ruby).

* feat: method-aware for-loop extractors + integration tests for all languages

Upgrade 4 existing extractors + create 3 new ones for full cross-language
coverage of call_expression iterables and container descriptor resolution:

Upgraded (add call expr iterable + methodToTypeArgPosition):
- Java: method_invocation (data.keySet(), data.values())
- Kotlin: navigation_expression + call_expression (data.keys, data.values())
- C#: member_access_expression + invocation_expression (data.Keys, data.Values)
- Go: TypeArgPosition threading for Go 1.18+ generics

New for-loop extractors:
- C++: for_range_loop with auto& unwrapping, template_type + qualified_identifier
  (std::vector<User>) extraction, explicit vs auto type handling
- PHP: foreach_statement with simple/key-value/by-reference forms, PHPDoc
  @param priority over AST array type
- Ruby: for-in with YARD @param type resolution via comment parsing

Integration test fixtures + tests for all 6 languages:
- java-map-keys-values (Map.values() + List iteration)
- kotlin-map-keys-values (HashMap.values + List iteration)
- csharp-dictionary-keys-values (Dictionary.Values foreach)
- cpp-range-for (auto& + const auto& range-based for)
- php-foreach-loop (foreach with PHPDoc @param User[])
- ruby-for-in-loop (for-in with YARD @param Array<User>)

Bugs fixed during integration testing:
- C++: qualified_identifier (std::vector) not unwrapped to template_type
- PHP: extractParameter overwrote PHPDoc-derived types with bare 'array'

252 unit tests pass, 201 integration tests pass across 6 languages.

* fix: update extractElementTypeFromString tests for last-arg default

TypeArgPosition change (default 'last') broke 5 existing tests expecting
first arg from multi-arg generics. Updated expectations and added explicit
pos='first' tests for key type extraction.

* fix: rename C++ fixture files to correct case for case-sensitive CI

On case-sensitive filesystems (Linux/macOS CI), git tracked both the old
lowercase files (app.cpp, user.h) and the new uppercase files (App.cpp,
User.h) as separate files. The pipeline processed both, causing the old
app.cpp (with explicit User& type) to interfere with the new auto& test.

Removes old lowercase entries and re-adds with uppercase casing to match
the #include directives in the fixture.

* feat: PR #318 review findings — pattern bindings, member access iterables, structured bindings

Address all 7 genuine gaps identified in PR #318 deep code review:

- Kotlin: add extractKotlinPatternBinding for when/is (type_test AST node)
  with allowPatternBindingOverwrite for smart-cast semantics
- Java: add type_pattern branch for Java 17+ switch pattern variables
- TypeScript: explicit object_pattern skip in for-of (no false bindings)
- Cross-language: member access iterables (self.users, this.users, repo.users)
  across all 10 language extractors
- C++: structured_binding_declarator handling in range-for (last-child heuristic)
- Rust: closure_parameter added to TYPED_PARAMETER_TYPES
- PHP: normalizePhpType handles angle-bracket generics (Collection<User>)

Code review fixes applied:
- Remove 4 debug console.log statements (c-cpp.ts, call-processor.ts)
- Hoist KNOWN_CONTAINER_PROPS to module scope (csharp.ts)
- Guard keysBefore allocation behind typeNode check (type-env.ts)
- Add depth limits (50) to 7 recursive type extraction functions
- Add 2048-char length cap to extractSimpleTypeName
- Fix PHP/Ruby missing typeArgPos parameter in resolveIterableElementType

Integration test fixtures: kotlin-when-pattern, java-switch-pattern,
cpp-structured-binding, typescript-member-access-for-loop,
python-member-access-for-loop

* fix: position-indexed when/is bindings, Kotlin param extraction, HashMap.values for-loop

Three root causes for failing Kotlin integration tests:

1. When/is multi-arm resolution: flat scopeEnv stored only the last arm's
   type (last-writer-wins). Added PatternOverrides with AST range indexing
   so each when arm resolves to its narrowed type independently.

2. HashMap.values for-loop: navigation_expression without call_suffix was
   classified as bare property access (iterableName='values' instead of
   'data'). Now tries object-as-iterable + property-as-method first, with
   fallback to property-as-iterable for this.users patterns.

3. Kotlin parameter extraction: tree-sitter-kotlin parameter nodes use
   positional children (simple_identifier, user_type) not named fields
   (name, type). Added fallback to findChildByType in both
   extractKotlinParameter and extractTypeBinding.

Integration tests added for .keys/.values/Set/MutableMap iteration,
3-arm when/is, multi-call within arms, and when+else branch.

* feat: enhance PHP type resolution for generics and member access in foreach loops

* feat: Phase 6.1 type resolution gap closure — container descriptors, recursive_pattern, class fields

Add 13 missing container type descriptors (Collection, MutableMap, Stream, SortedSet, etc.)
to CONTAINER_DESCRIPTORS for correct element type extraction across C#, Kotlin, and Java.

Extend C# pattern binding to handle recursive_pattern (obj is User { Name: "Alice" } u)
in both is-expression and switch expression contexts.

Add TypeScript class field declaration support (public_field_definition) so for-loop
iteration over this.fieldName resolves element types from class field type annotations.
Includes file-scope fallback in resolveIterableElementType and nested member_expression
handling for this.field.method() patterns.

* docs: add type resolution system documentation with roadmap

Covers the full architecture, resolution tiers (0-2), scope model,
language feature matrix, container descriptors, pipeline integration,
and the Phase 7-9 roadmap for cross-scope propagation, field-type
resolution, and return-type-aware binding.

* feat: Phase 6.2 review findings — C# nested member foreach, C++ deref range-for, Java field_access

Close two gaps found during fourth-pass review of PR #318:

- C# foreach (var user in this.data.Values): nested member_access_expression
  now extracts intermediate property name for scopeEnv lookup
- C++ for (auto& user : *ptr): pointer_expression dereference now recognized
  as range-for iterable

Root causes fixed in shared infrastructure:
- extractSimpleTypeName: add template_type (C++) and generic_name (C#)
- extractGenericTypeArgs: add generic_name for consistency
- type-env.ts: unwrap variable_declaration wrapper in field_declaration
  for declarationTypeNodes capture (zero-allocation manual loop)

Additional review findings addressed:
- Java: add field_access handler for this.data.values() in method_invocation
- C++ pointer_expression: document limitation (*identifier only)
- TypeScript: fix stale comment about property_identifier

All 525 tests pass (278 unit + 247 integration).

* perf: optimize type resolution pipeline — worker threshold, skip graph phases, AST pruning

- Skip worker pool creation for small repos (<15 files or <512KB) — saves 100-400ms
- Add skipGraphPhases option to runPipelineFromRepo to skip MRO/community/process phases
- Add conservative SKIP_SUBTREE_TYPES for leaf-only AST nodes (string, comment, number)
- Pre-compute interestingNodeTypes set — single Set.has() replaces 3 checks per node
- Add fastStripNullable — skip full stripNullable for simple identifiers (90%+ case)
- Replace .children?.find() with manual for loops in extractFunctionName (no array alloc)
- Add hookTimeout: 120000 to vitest.config.ts for CI beforeAll hooks

* fix: review findings — remove template_string from SKIP_SUBTREE_TYPES, handle bare nullable keywords

- Remove template_string and concatenated_string from SKIP_SUBTREE_TYPES
  (template literals contain interpolated expressions with typed code)
- Add FAST_NULLABLE_KEYWORDS check to fastStripNullable for behavioral
  parity with stripNullable on bare null/undefined/void/None/nil
- Add explanatory comment on extractPendingAssignment scopeEnv guard

* feat: add type resolution system and roadmap documentation
2026-03-17 17:10:22 +00:00
Gergő Magyar
f2d3df48f6
feat: Phase 5 type resolution — chained calls, pattern matching, class-as-receiver (#315)
* feat: Phase 5 type resolution — chained calls, pattern matching, class-as-receiver, code review fixes

Phase 5.1: Chained method call resolution (depth-capped at 3)
- resolveChainedReceiver() resolves a.getUser().save() by walking the chain
  and looking up intermediate return types from the SymbolTable
- extractReceiverNode() + extractCallChain() shared in utils.ts
- receiverCallChain on ExtractedCall for worker path parity
- MAX_CHAIN_DEPTH=3 enforced in both extraction and resolution

Phase 5.2: Pattern matching binding extractors
- PatternBindingExtractor type added to LanguageTypeConfig
- declarationTypeNodes map tracks original type AST nodes for generic unwrapping
- Rust: if let Some(x)/Ok(x) unwrapping with extractGenericTypeArgs
- Java: instanceof pattern variables (Java 16+)
- C#: is-pattern disambiguation fixture (already working via extractDeclaration)

Phase 5.5d: Python standalone type annotations (name: str)
- expression_statement with type child now captured in DECLARATION_NODE_TYPES

Phase 5.5e: ReceiverKey collision fix for overloaded methods
- receiverKey preserves @startIndex to prevent same-name method collisions
- lookupReceiverType does prefix scan with ambiguity refusal

Class-as-receiver for static method calls (#289)
- UserService.find_user() now resolves via ctx.resolve() tiered lookup
- Respects import scoping — no false positives from unrelated packages

Code review fixes:
- Extracted CALL_EXPRESSION_TYPES + extractCallChain to utils.ts (eliminated duplication)
- Converted resolveChainedReceiver from recursion to loop (no exposed depth param)
- Added depth cap to extractReturnTypeName (defense against nested wrapper types)
- Replaced lookupFuzzy with ctx.resolve for class-as-receiver (architecturally consistent)

Closes #289

Test coverage: 6 new fixtures, 12+ new unit tests, 7 new integration test suites

* fix: Ruby chain calls, Rust Err(x) unwrap, Enum class-as-receiver (#315)

Address three per-language gaps identified in Phase 5 code review:

- Ruby: add `method`/`receiver` field fallbacks to extractCallChain
  (tree-sitter-ruby uses different field names than other grammars)
- Rust: handle `Err(e)` pattern binding via typeArgs[1] from Result<T,E>
- Enum: include Enum type in class-as-receiver filter (both paths)

Integration tests added for all three fixes.

* fix: chain base type resolution parity between serial and worker paths (#315)

- Worker path: add typeEnv.lookup for chain base receiver after extraction
  (typed parameters like `fn process(svc: &UserService)` were silently lost)
- Serial path: add ctx.resolve class-as-receiver fallback for chain base
  (class-name chains like `UserService.find_user().save()` failed)
- Fix misleading comment in parse-worker.ts that described unimplemented logic
- Integration tests: typed-parameter chain, static class-name chain

* fix: Kotlin chain call extraction, createClassNameLookup Enum/Struct (#315)

- Kotlin: extractCallChain now handles navigation_expression → navigation_suffix
  AST structure (Kotlin's call_expression has no 'function' field)
- createClassNameLookup: include Enum and Struct alongside Class for consistent
  constructor recognition in extractInitializer
- Integration test: kotlin-chain-call fixture verifying svc.getUser().save()
2026-03-16 19:38:09 +00:00
Gergő Magyar
6c18ae08f7
feat: return type inference, doc-comment parsing, and per-language type extractors (#284)
* feat: Phase 3 — return type inference, generic args extraction, Ruby YARD type extractor

Three architectural improvements to the type resolution system:

1. Return type inference — wire extractMethodSignature returnType through
   SymbolDefinition into call-processor. When var = callee() and callee
   has a known return type, bind var to that type. Handles Promise<T>
   unwrapping, nullable stripping, pointer/reference removal.

2. Generic type argument extraction — new extractGenericTypeArgs() utility
   that extracts type parameters from List<User> → ['User']. Handles
   TS/Java/Kotlin/C#/Rust generic syntax. Building block for for-loop
   variable typing.

3. Ruby dedicated type extractor — replaces the stub with YARD annotation
   parsing (@param name [Type]), handling qualified types, nullable types,
   and singleton methods. Ruby now has real type resolution.

Unit tests: 127 → 192+ (type-env) + 65 (symbol-table, call-processor) + 18 (generics)
Integration tests: 8+ new test cases with fixtures across TS/Python/Go/Java/Ruby

* fix: Phase 3 gaps — WRAPPER_GENERICS correctness, Ruby :: qualifier, namespaced constructors

- Remove collection types (List, Array, Vec, Set) from WRAPPER_GENERICS to prevent
  false CALLS edges (e.g. List<User> no longer unwraps to User)
- Add :: qualifier handling in extractReturnTypeName for Ruby/C++/Rust namespaced types
- Add Ruby `constant` and `scope_resolution` node types to shared extractors
- Extract shared extractRubyConstructorAssignment helper (dedup type-env.ts + ruby.ts)
- Add integration tests for return type inference: Python, TypeScript, Go, Java, Ruby
- Add Ruby namespaced constructor fixture (Models::UserService.new)
- Add unit tests for collection reclassification and :: qualifiers

* feat: Phase 4 — CONSTRUCTOR_BINDING_SCANNERS for all languages + return type inference tests

Add CONSTRUCTOR_BINDING_SCANNERS for 6 missing languages, completing
return type inference coverage across all 11 supported languages:

- TypeScript/JS: variable_declarator with call_expression, unwraps await
- Go: short_var_declaration single-assignment (skips multi-return, new/make)
- Java: local_variable_declaration with `var` type + method_invocation
- C#: variable_declaration with implicit_type (var) + invocation_expression
- Rust: let_declaration without type annotation, handles mut_pattern
- PHP: assignment_expression with function_call_expression

Also adds property_identifier to extractSimpleTypeName for qualified
member calls (repo.getUser → getUser), fixing namespaced constructor
inference that was previously a known limitation.

Integration tests added for all 11 languages with correct label
assertions (Function vs Method per language's tree-sitter queries).

* refactor: merge CONSTRUCTOR_BINDING_SCANNERS into per-language LanguageTypeConfig

Eliminates the parallel dispatch map in type-env.ts by moving all 11
constructor binding scanners into their respective type-extractors/*.ts
files as `scanConstructorBinding` on LanguageTypeConfig.

- Add ConstructorBindingScanner type to types.ts
- Add shared helpers: hasTypeAnnotation, unwrapAwait, extractCalleeName
- Move scanners to typescript.ts, jvm.ts, python.ts, php.ts, go.ts,
  rust.ts, swift.ts, c-cpp.ts, csharp.ts, ruby.ts
- Fix `any` types in C# scanner → SyntaxNode | null
- Delete ~300 lines from type-env.ts (CONSTRUCTOR_BINDING_SCANNERS map)
- Update buildTypeEnv to use config.scanConstructorBinding

All 143 type-env unit tests and all 10 language integration suites pass.

* fix: remove unused import, fix any type in Java scanner, update stale comment

- Remove unused extractCalleeName import from jvm.ts
- Fix (c: any) → (c: SyntaxNode) in Java scanner
- Update stale CONSTRUCTOR_BINDING_SCANNERS reference in ruby.ts comment

* fix: C# and PHP return type inference — scanner fixes, method signature extraction, and cross-file resolution

Addresses code review findings on PR #284:

C# scanner (csharp.ts):
- Fix type node lookup: iterate children instead of childForFieldName('type')
  which returns undefined in tree-sitter-c-sharp
- Fix initializer lookup: handle direct invocation_expression children
  (no equals_value_clause wrapper in tree-sitter-c-sharp)

C# return type extraction (utils.ts):
- Add 'returns' field check to extractMethodSignature — tree-sitter-c-sharp
  uses 'returns', not 'type', for method return types

C# cross-file resolution (call-processor.ts + fixture):
- Add constructor binding verification to sequential processCalls path
  (was only in the worker processCallsFromExtracted path)
- Add ReturnType.csproj to csharp-return-type fixture
- Update fixture namespaces to use ReturnType.Models/ReturnType.Services
  prefix (matches real C# project conventions)

PHP scanner (php.ts):
- Extend scanConstructorBinding to handle member_call_expression
  ($this->getUser() patterns), not just function_call_expression

Shared (shared.ts):
- Add member_access_expression to extractSimpleTypeName qualified-names
  block (C# method calls like svc.GetUser())

Tests:
- Add Repo.cs/Repo.php disambiguation fixtures (two Save methods)
- Strengthen C# and PHP return type tests with hard disambiguation assertions
- Add C# scanner unit tests and return type extraction test

* feat: per-language ReturnTypeExtractor + doc-comment @param parsing for PHP, JS, Ruby

Add ReturnTypeExtractor to LanguageTypeConfig interface with implementations
for Ruby (YARD @return), PHP (PHPDoc @return), and JS/TS (JSDoc @returns).
The fallback is wired in both parsing-processor and parse-worker paths,
activating only when extractMethodSignature finds no AST-based return type.

Also add doc-comment @param type extraction for PHP and JS/TS, following
Ruby's existing collectYardParams pattern. This enables parameter.method()
resolution in loosely-typed codebases using PHPDoc @param or JSDoc @param.

Additional fixes from PR #284 code review:
- Go: add selector_expression + field_identifier to extractSimpleTypeName
  (enables package-qualified factory calls like models.NewUser())
- Ruby: broaden scanConstructorBinding to capture plain call assignments
  (user = get_user()) in addition to Class.new patterns
- Ruby: harden return-type fixture with disambiguation (two save methods)

Test coverage: +14 new integration tests across Go, Ruby, PHP, JS/TS

* fix: JSDoc async return type, PHP attribute walkers, and $this receiver disambiguation

Three fixes from fourth-pass code review on PR #284:

1. JSDoc `@returns {Promise<User>}` no longer stripped to `Promise` — extractReturnType
   now uses sanitizeReturnType (preserves generics) instead of normalizeJsDocType
   (which stripped them before extractReturnTypeName could unwrap WRAPPER_GENERICS).

2. PHP 8+ `#[Attribute]` and JS `@decorator` nodes no longer break doc-comment walkers.
   Both extractReturnType and collect*Params functions now skip attribute_list/decorator
   nodes instead of breaking on them as named siblings.

3. PHP `$this->method()` now provides receiverClassName for disambiguation.
   When two classes define the same method, the enclosing class narrows candidates
   via ownerId matching in call-processor, preventing false no-binding results.

* fix: sanitizeReturnType dot corruption, JS test assertions, Ruby constant receiver

- Remove redundant dot-path stripping from sanitizeReturnType that corrupted
  qualified names inside generics (e.g. Promise<models.User> → User>)
- Split JS async fixture into separate files and add negative assertions
  to properly verify disambiguation (mirroring PHP test pattern)
- Accept 'constant' node type in Ruby scanConstructorBinding for factory
  call assignments (SERVICE = build_service())
- Add 'constant' to SIMPLE_RECEIVER_TYPES so extractReceiverName handles
  Ruby constant receivers (SERVICE.process)

* fix: nested generic arg splitting, JS/Ruby test false positives

- Replace naive comma split in extractReturnTypeName with bracket-balanced
  extractFirstGenericArg so nested types like Future<Result<User, Error>>
  unwrap correctly instead of producing malformed "Result<User"
- Add CompletableFuture to WRAPPER_GENERICS for Java async unwrapping
- Split js-jsdoc-return-type fixture models.js into user.js/repo.js and
  add negative assertions to prove disambiguation (not just file match)
- Split ruby-constant-factory-call fixture into separate service files
  and add negative assertions against AdminService resolution

* fix: review findings — receiverClassName parity, Rust wrappers, Go multi-return, Kotlin/Swift qualified calls

P1: Sequential path now includes receiverClassName narrowing for PHP
$this->method() disambiguation (was missing vs worker path).

P2: Added Rc/Arc/Weak/MutexGuard/Cow + 6 more Rust Deref types to
WRAPPER_GENERICS (Box excluded — Java Swing collision). Extended
Kotlin/Swift scanners to handle navigation_expression callees.
Added Go multi-return support (user, err := f()) with blank/_/err/ok
guard + AST-level first-return extraction in extractMethodSignature.

P3: Extracted shared verifyConstructorBindings() eliminating 60 lines
of duplication between sequential and worker paths. Added return-type
inference integration tests for C++, Rust, Swift with competing
methods and negative disambiguation assertions.

* fix: Swift navigation_suffix unwrapping, Rust lifetime skipping, Kotlin disambiguation tests

- Swift scanConstructorBinding: handle tree-sitter wrapping qualified
  identifiers in navigation_suffix nodes
- Add extractFirstTypeArg to skip Rust lifetime parameters ('a, '_)
  when unwrapping wrapper generics like Ref<'_, User>
- Kotlin tests: add Repo class fixture with competing save() methods
  to prove disambiguation; assert no spurious edges on known gap
- Remove tree-sitter-kotlin from optionalDependencies (now regular dep)

* fix: C# null-conditional calls, Ruby YARD bracket-balanced split, PHPDoc alternate order, escapeValue hardening

- Add C# null-conditional call support (user?.Save()): tree-sitter query for
  conditional_access_expression, member_binding_expression in MEMBER_ACCESS_NODE_TYPES,
  receiver extraction via conditional_access_expression parent walk
- Fix Ruby YARD type parsing for nested generics (Hash<Symbol, User>): replace
  naive split(',') with bracket-balanced splitter respecting <> depth
- Add alternate YARD format (@param [Type] name) alongside standard (@param name [Type])
- Add alternate PHPDoc format (@param $name Type) alongside standard (@param Type $name)
- Harden escapeValue in kuzu-adapter.ts: escape \n and \r to prevent Cypher injection
- Integration tests: C# null-conditional fixture (5 tests), Ruby YARD generics fixture (6 tests)
- Unit tests: PHPDoc alternate order (2 tests), C# null-conditional call-form (updated)

* test: add Python static/classmethod integration tests (issue #289)

Verifies that classes using only @staticmethod/@classmethod have HAS_METHOD
edges connecting them to their child methods. This was the root cause of
issue #289 where context() and impact() returned empty for such classes.

Tests cover: HAS_METHOD edge emission, unique static method resolution
(create_user, delete_user), and ambiguous same-named method handling
(find_user on both UserService and AdminService — safely refused).

* fix: lbug batch escapeValue newline hardening, Rust ::default() scanner exclusion

- Apply \n/\r escaping to batch upsert escapeValue in lbug-adapter.ts:429
  (missed instance of the CREATE-path fix from ec4dca4)
- Exclude Rust ::default() from scanConstructorBinding to match
  extractInitializer behavior — avoids wasted cross-file lookups on
  the broadly-implemented Default trait
- Unit tests: 2 new scanner exclusion tests (::default and ::new)
- Integration tests: 6 new Rust ::default() constructor resolution tests
  with disambiguation fixture (User::default vs Repo::default)

* fix: C#/Rust async await unwrap, PHP backslash namespace, fallback escaping

- C# scanConstructorBinding: unwrap await_expression to find invocation_expression
  (var user = await svc.GetUserAsync() now produces constructor binding)
- Rust scanConstructorBinding: unwrap .await postfix via shared unwrapAwait helper
  (let user = get_user().await now produces constructor binding)
- extractReturnTypeName: handle PHP backslash namespace separator (\App\Models\User → User)
- fallbackRelationshipInserts: match batch escapeValue hardening with \n/\r escaping

Tests: 2 unit (type-env), 3 unit (call-processor), 7 integration (csharp+rust), 7 fixtures

* fix: C#/Rust async-binding test false positives — add competing types and negative assertions

C# fixture: add Order.cs with Order.Save(), change OrderService to return
Task<Order> via GetOrderAsync, add negative assertion proving user.Save()
does not resolve to Order#Save.

Rust fixture: split models.rs into user.rs/repo.rs, make process_user and
process_repo async fn, add bidirectional negative assertions proving no
cross-contamination between User#save and Repo#save.

* fix: C# async-binding broken assertion, bare wrapper type leak, JSDoc optional params

- Split Program.cs Main into ProcessUser/ProcessOrder so negative
  assertions use strict toBeUndefined() (matching Rust pattern)
- Guard bare wrapper types (Task, Promise, Option…) in
  extractReturnTypeName — return undefined instead of the wrapper name
- Update JSDOC_PARAM_RE to capture @param {Type} [optionalName] syntax

* fix: update symbol and relationship counts in documentation
2026-03-15 18:49:40 +00:00
Gergő Magyar
62242d5f44
feat: TypeEnvironment API with constructor inference, self/this/super resolution (#274)
* feat(type-env): constructor-call type inference for TypeEnv (Phase 1)

Add extractInitializer as a Tier 1 fallback in buildTypeEnv: when a
declaration node has no explicit type annotation, infer the type from
constructor-call patterns (new X(), X::new(), X::default(), $x = new X()).

Languages covered: TypeScript/JS, Java (var), Rust, PHP, C++ (auto).
Python/Kotlin/Swift deferred — need symbol-table access to distinguish
class constructors from function calls.

Adds 20 new unit tests covering constructor inference, annotation
precedence, and known limitations across all supported languages.

* fix(type-env): class-aware constructor resolution, multi-declarator fix

- Add collectClassNames pre-scan: walks AST to build Set<string> of
  class/struct names defined in the file
- C++ extractInitializer uses classNames.has() to verify identifier is
  a known class before inferring (auto x = User() resolves, auto x =
  getUser() does not — no false positives)
- Add InitializerExtractor type that receives classNames parameter
- Fix env.size gating: always call extractInitializer when available,
  so mixed declarators like const a: A = x, b = new B() resolve both
- Add env.has() guard in Java extractInitializer to skip already-bound vars
- Document Rust new/default whitelist rationale
- Pin all test assertions, add mixed multi-declarator test case

* fix(type-env): resolve Self/self/static/parent to actual type names

- Rust: Self::new()/Self::default() resolves to enclosing impl type
- PHP: new self()/static() resolves to enclosing class, parent() to superclass
- Rust: Tier 0 annotation guard prevents overwrite by constructor inference
- Rust: mut_pattern handling in extractVarName for let mut bindings
- TS: fix misleading comment in extractInitializer
- 58 tests passing (3 new Self/self resolution tests)

* perf(type-env): single-pass AST walk with closure-scoped state

Refactors buildTypeEnv to use closures instead of passing mutable state
as parameters. classNames, env, and config are captured by the inner
walk and extractTypeBinding functions — no parameter mutation.

- Eliminates separate collectClassNames pre-scan (O(2n) → O(n))
- config looked up once per file instead of per-node
- 29 fewer lines

* feat(type-env): constructor-inferred type resolution for all languages

Add cross-file constructor type inference to the ingestion pipeline,
enabling receiver-type disambiguation for member calls like
`user.save()` when the variable is assigned from a constructor without
explicit type annotations.

Pipeline changes:
- Add extractInitializer to Python and Swift type extractors
- Add CONSTRUCTOR_BINDING_SCANNERS for Python, Swift, C/C++ in type-env
- Wire constructorBindings through parse-worker → parsing-processor →
  pipeline → processCallsFromExtracted
- Rewrite resolveCallTarget receiver-type filtering (step D) to use
  tiered import resolution (same-file → import-scoped → global) before
  falling back to fuzzy ownerId matching
- Use collectTieredCandidates for constructor binding verification
  instead of raw lookupFuzzy

Bug fixes:
- Fix C++ inline method query: @definition.method was captured on
  field_declaration_list instead of function_definition, causing wrong
  parameterCount for all inline class methods
- Fix parse-worker accumulated/flush results missing constructorBindings

CI changes:
- Add swift.test.ts to ci-integration pipeline group and coverage job
- Update ci-report to fetch base branch (main) coverage for delta
  reporting instead of showing config thresholds
- Add per-suite timing breakdown table (unit/integration/total)
- Add expandable skipped test details section

Tests: 288 passed, 4 skipped (swift — macOS only) across 10 languages
- 36 new constructor-inferred integration tests (4 per language)
- 10 fixture directories with cross-file constructor patterns
- TypeScript, JavaScript, Java, Kotlin, Python, PHP, Rust, Go, C++, Swift

* fix(type-extractors): add type assertion for LanguageTypeConfig

* feat(ruby): constructor-inferred type resolution and self-receiver mapping

Add Ruby User.new constructor binding scanner to type-env, enabling
receiver-type disambiguation for member calls like user.save vs repo.save.
Add self/this → enclosing class resolution in lookupTypeEnv so self.method()
calls resolve to the correct class even when the method name is ambiguous.

* docs: update README with constructor inference and self/this resolution details

* refactor(ingestion): unified ResolutionContext replaces fragmented map passing

Introduce createResolutionContext() as the single resolution API for all
processors. Eliminates duplicated tier-selection logic, fixes heritage
namedImportMap bug, and adds per-file resolution caching.

- NEW resolution-context.ts: closure-factory with resolve(), per-file cache,
  TIER_CONFIDENCE constant, and shared ResolutionTier type
- DELETE symbol-resolver.ts: zero production importers, logic now in
  resolution-context.ts
- call-processor: all functions take ctx instead of 6 separate maps,
  collectTieredCandidates removed (ctx.resolve replaces it),
  D4 redundant re-resolve eliminated
- heritage-processor: takes ctx, resolveHeritageId helper extracts
  repeated 14-line fallback pattern, namedImportMap now included
- import-processor: takes ctx, dead createImportMap/createPackageMap/
  createNamedImportMap factories removed
- pipeline: creates single ctx, wires onProgress to all processors,
  logs cache hit rate in dev mode
- Tier renamed: unique-global → global (honest about returning all candidates)
- Tests migrated: 1178 unit + 84 integration passing

* feat(type-env): self/this/super resolution, TypeEnvironment API, and review fixes

Add cross-language receiver keyword resolution:
- self/this/$this → enclosing class name via AST walk
- super/base/parent → parent class name via heritage AST extraction
  (8 grammar variants: TS/JS, Java, Python, Ruby, C#, PHP, Kotlin, C++, Swift)
- D-phase widening in resolveCallTarget for super→parent method dispatch

Introduce TypeEnvironment API replacing loose TypeEnvResult + lookupTypeEnv:
- buildTypeEnv() returns TypeEnvironment with .lookup() method
- Single-pass AST walk merges constructor binding scan (was separate traversal)
- ClassNameLookup type replaces over-broad ReadonlySet<string> facade
- Memoized class name lookups to avoid redundant SymbolTable scans

Code review fixes (6 agents, 11 findings):
- Replace ctx.resolve(name, '') hack with direct symbols.lookupFuzzy()
- Extract scope key helpers (extractFuncNameFromScope, receiverKey)
- Simplify D-phase from 5 steps to 4 with deduped typeNodeIds
- Remove C from CONSTRUCTOR_BINDING_SCANNERS (YAGNI — C has no constructors)
- Cache Map reuse in ResolutionContext to reduce GC pressure
- Remove unused TieredCandidates import

Integration tests for self/this, parent, and super resolution across all
12 supported languages with per-language fixture directories.

* fix(type-env): generic parent resolution, TS cast inference, C++ brace-init

Fix generic parent class breaking super resolution:
- extractParentClassFromNode now uses extractSimpleTypeName to strip
  generic params (Base<T> → Base) and qualified names (models.Model → Model)
- Affects TS, Java, Python, C# heritage extraction

Fix TypeScript new X() as T / new X()! missed inference:
- Unwrap as_expression and non_null_expression before checking for
  new_expression in extractInitializer

Fix C++ brace-init User{} missed inference:
- Handle compound_literal_expression with type_identifier child
  in extractInitializer

Clean up deprecated lookupTypeEnv:
- Remove standalone lookupTypeEnv export, migrate all callers to
  TypeEnvironment.lookup() method
- Update all 80+ test assertions to use the new API

Integration test fixtures added:
- typescript-cast-constructor-inference (new X() as T, new X()!)
- typescript/java/csharp/kotlin-generic-parent-resolution
- cpp-brace-init-inference (auto x = User{})

* fix(type-extractors): Go &User{}, TS double-cast, Swift .init inference

Fix Go pointer-to-struct literal not inferred:
- Unwrap unary_expression (address-of &) before composite_literal check
- user := &User{} now correctly infers type User

Fix TypeScript double-cast only unwrapping one level:
- Change if to while loop for nested as_expression/non_null_expression
- new User() as unknown as Admin now correctly infers type User

Fix Swift User.init(name:) explicit init call missed:
- Handle navigation_expression callee with .init suffix in extractInitializer

Integration test fixtures:
- go-pointer-constructor-inference (&User{}, &Repo{})
- typescript-double-cast-inference (as unknown as T)

* feat: Rust struct literal, Python qualified ctor, Go new(), Swift .init scanner

- Rust: handle struct_expression in extractInitializer (User { name: "alice" })
- Python: support attribute nodes in extractInitializer (models.User("alice"))
  and the cross-file scanner — extractSimpleTypeName handles qualified names
- Go: handle new(User) built-in in extractGoShortVarDeclaration
- Swift: extend CONSTRUCTOR_BINDING_SCANNERS to handle navigation_expression
  callee for User.init(name:) cross-file resolution

Unit tests: 87 → 96 (Rust struct literal, Go new(), Python qualified ctor,
Python scanner qualified, plus edge cases)
Integration tests: 4 new describe blocks with fixtures

* fix: Rust Self{} resolution, C++ scoped brace-init, PHP promotion params, Ruby constants

- Rust: resolve Self {} struct literal to enclosing impl type (was stored as "Self")
- C++: replace type_identifier guard with extractSimpleTypeName for compound_literal_expression,
  enabling ns::User{} scoped brace-init (closes previously deferred gap)
- PHP: add property_promotion_parameter to TYPED_PARAMETER_TYPES for PHP 8.0+
  constructor property promotion (__construct(private Foo $x))
- Ruby: extend extractRubyConstructorBinding to accept constant left-hand side
  (REPO = Repo.new)

Unit tests: 96 → 101 (+5: Rust Self{} ×2, C++ ns::User{} ×1, PHP promotion ×1,
Ruby constant ×1)
Integration tests: 4 new describe blocks with fixtures

* feat: Phase 1 type resolution gaps — walrus, PHP properties, nullable, Go make/assert

Phase 1 quick wins from the type resolution gap analysis:

1. Python walrus operator := (named_expression) — extractInitializer + scanner
2. PHP 7.4+ typed class properties — property_declaration in extractDeclaration
3. Nullable union unwrapping — User | null → User in extractSimpleTypeName
4. Go make() builtin — slice/map element type extraction
5. Go type assertions — iface.(User) type extraction

Also: PHP primitive_type handling in extractSimpleTypeName (string, int, etc.)

Unit tests: 101 → 114 (+13)
Integration tests: 8 new describe blocks with fixtures

* feat: Phase 2 type resolution gaps — C++ range-for, Rust if-let, C# pattern matching, Python class annotations

Phase 2 medium-effort improvements:

1. C++ range-for with explicit type — for (User& u : vec) binds u: User
2. Rust if-let/while-let captured_pattern — user @ User { .. } binds user: User
3. C# is-pattern matching — if (obj is User user) binds user: User
4. Python class-level annotations — confirmed already working, added tests

Unit tests: 114 → 127 (+13)
Integration tests: 11 new test cases with fixtures
2026-03-14 19:05:49 +00:00
Gergő Magyar
1afe9166aa
feat: language-aware code intelligence — symbol resolution, MRO, constructor discrimination (#238)
* feat: add Method Resolution Order (MRO) with language-specific rules

Implement full MRO computation for multi-language inheritance hierarchies:

- HAS_METHOD edges: Class→Method ownership edges emitted during parsing
  (both worker pool and sequential fallback paths)
- Method signatures: extract parameterCount and returnType from AST nodes
- C# heritage fix: distinguish EXTENDS vs IMPLEMENTS for base_list captures
  using symbol table lookup + I[A-Z] naming heuristic fallback
- MRO processor (Phase 4.5): walks inheritance DAG, detects method-name
  collisions across parents, applies language-specific resolution:
  - C++: leftmost base class in declaration order wins
  - C#/Java: class method wins over interface default
  - Python: C3 linearization with cycle detection
  - Rust: no auto-resolution (requires qualified syntax)
  - Default: first definition in BFS order wins
- OVERRIDES edges emitted for resolved method collisions
- KuzuDB schema: Method table extended with parameterCount/returnType;
  dedicated CSV writer and COPY query for 10-column Method rows
- MCP tools: updated Cypher examples for HAS_METHOD, OVERRIDES, diamond

72 tests across 5 test files covering MRO resolution, HAS_METHOD edges,
method signature extraction, C# heritage resolution, and integration
tests across C#/Rust/Python/TS/Java/C++.

* feat: add scope-based symbol resolution replacing raw lookupFuzzy

Introduces a shared 3-tier resolveSymbol function used by both
heritage-processor and call-processor:
1. Same-file (lookupExactFull — authoritative)
2. Import-scoped (filtered by ImportMap — high confidence)
3. Global fuzzy (first match — low confidence fallback)

Adds lookupExactFull to SymbolTable returning full SymbolDefinition
with type info needed for heritage Class/Interface disambiguation.

* refactor: tighten symbol resolution — Tier 3 refuses ambiguous matches

- lookupExactFull now O(1) via direct SymbolDefinition storage in fileIndex
  (shared object references with globalIndex — zero additional memory)
- Added resolveSymbolInternal() preserving { definition, tier, candidateCount }
  for test assertions and logging
- Tier 3 now returns null when multiple global candidates exist instead of
  arbitrary allDefs[0] — a wrong edge is worse than no edge
- call-processor: renamed fuzzy-global → unique-global, removed dead branch
- 12 new tests: tier assertions, ambiguous refusal per language family,
  heritage false-positive guard, O(1) shared reference verification

* fix: critical language support bugs in import resolution and MRO

Phase 5 critical fixes from all-language analysis:
- Python: add relative_import query capture (PEP 328) — `.models`, `..utils`
  were silently dropped, producing zero ImportMap entries
- Rust: extract prefix from grouped imports `crate::module::{A, B}` — brace
  groups previously failed resolution entirely
- Swift: use normalizedFileList for Windows path compatibility in module
  import resolution (matches Go's resolveGoPackage pattern)
- MRO: fix c_sharp → csharp language name mismatch (enum is 'csharp'),
  add Kotlin to C#/Java resolution rules (class method wins over interface)

* feat: add strict multi-language integration tests + fix C/C++ import resolution

Add 32 integration tests across 6 language fixtures (TypeScript, C#, C++,
Java, Python, Rust) with exact toBe/toEqual assertions validating heritage
edges, import resolution, and trait implementations.

Fix C/C++ import resolution bug where dot-to-slash conversion mangled
include paths (e.g. "animal.h" became "animal/h"). Now skips conversion
for C/C++ languages which use actual file paths in #include directives.

* fix: language-gate heritage heuristic, add Swift extension heritage, handle Rust grouped imports

- Gate I[A-Z] naming heuristic to C#/Java only (was firing for all languages)
- Swift unresolved types default to IMPLEMENTS (protocol conformance is the norm)
- Add tree-sitter query for Swift extension protocol conformance (extension Foo: Protocol)
- Handle Rust top-level grouped imports (use {crate::a, crate::b}) in both import loops
- Add 4 new heritage-processor tests (TypeScript refusal, Swift default, Swift Tier 1)

* feat: add Go struct embedding heritage + PackageMap optimization

Add Go struct embedding detection (anonymous fields → EXTENDS edges) via
new tree-sitter heritage query with named-field filtering in both
parse-worker and heritage-processor paths.

Implement PackageMap optimization for Go cross-package resolution:
replace O(N) file-level ImportMap expansion with directory-level suffix
matching (Tier 2b in symbol resolver). Graph IMPORTS edges are preserved
via addImportGraphEdge split.

Remove overly broad @definition.type from GO_QUERIES that was
double-matching structs/interfaces as TypeAlias nodes, breaking Tier 3
unique-global resolution.

Add Go fixture (go-pkg) with Admin→User embedding, cross-package calls,
and 7 integration tests covering structs, functions, imports, calls,
and heritage edges.

* test: add Kotlin heritage integration tests

Adds a kotlin-heritage fixture and 7 integration tests validating
class inheritance, interface implementation, JVM-style import
resolution, and symbol-table-driven EXTENDS/IMPLEMENTS disambiguation
via Kotlin delegation specifiers.

* feat: extract resolvers, add PHP tests, ambiguous tests for all languages

- Extract language-specific resolvers from import-processor.ts into
  resolvers/ directory (P7): jvm, go, csharp, php, rust, standard, utils
- import-processor.ts reduced from 1412 to 711 lines (50% reduction)
- Add comprehensive PHP integration tests: PSR-4 imports, traits, enums,
  heritage edges, method calls, MRO overrides
- Add ambiguous symbol resolution tests for all 9 languages verifying
  correct disambiguation via import chains
- Split monolithic lang-resolution.test.ts (1080 lines) into 9 per-language
  files under test/integration/resolvers/ with shared helpers

* feat: update integration tests to include resolver tests for multiple languages

* fix: address code review — schema gap, Rust impl name, Property OVERRIDES

Bugs fixed:
- Add 13 missing FROM/TO pairs in RELATION_SCHEMA for HAS_METHOD edges
  (Class/Interface/Struct/Trait/Impl/Record to Method/Constructor/Property)
- Fix findEnclosingClassId to pick implementing type for Rust
  impl Trait for Struct blocks (was picking trait name)
- Exclude Property nodes from MRO OVERRIDES collision detection
- Change MRO language fallback from typescript to unknown

Tests added:
- Unit: Property OVERRIDES exclusion (2 tests), Rust impl Trait for
  Struct name resolution (2 tests), schema HAS_METHOD pair coverage
- Integration: no OVERRIDES targets Property nodes across all 9 languages
- PHP fixture: added shared $status property to both traits to create
  real collision scenario for Property OVERRIDES exclusion test

Documentation:
- OVERRIDES edge direction (Class to Method), Go return type gap,
  BFS first-reach heuristic limitation

* feat: harden CALLS-edge resolution — Phase 0 validation

- Fix same-file confidence (0.85 → 0.95) to correctly outrank import-scoped (0.9)
- Fix Tier 1 overload preservation: use globalIndex filter instead of fileIndex lookup
- Add callable-kind guard: refuse CALLS edges to Interface and Enum symbols
- Fix Kotlin countCallArguments: handle call_suffix → value_arguments nesting
- Fix Kotlin extractFunctionName: add simple_identifier to fallback search
- Strictly type findParameterList and countCallArguments (remove all `any`)
- Add arity-based call resolution integration tests for 9 languages
- Add unit regression tests for Interface/Enum CALLS refusal

* chore: remove C# build artifacts from fixtures

* feat: add call-form discrimination and ownerId to symbol table (Phase 1)

Add inferCallForm() and extractReceiverName() to distinguish free/member/constructor
calls at the AST level across all 9 languages. Add ownerId field to SymbolDefinition
linking Method/Constructor/Property to their owning class. Includes 36 unit tests
and member-call integration tests for all 9 languages (132 tests, 0 failures).

* feat: constructor/struct-literal resolution across all languages (Phase 2)

Add constructor discrimination to CALLS-edge resolution: new Foo(),
User{...} struct literals, and C# primary constructors now resolve to
Constructor/Class/Struct/Record nodes instead of being filtered out.

Queries: new_expression (C++), object_creation_expression (PHP),
composite_literal (Go), struct_expression (Rust), primary constructor
and implicit_object_creation_expression (C#).

Relaxes global tier in collectTieredCandidates to pass all candidates
through filterCallableCandidates, allowing kind/arity narrowing to
disambiguate at lower confidence.

* feat: receiver-constrained resolution with integration tests for all 9 languages

Add receiver-type filtering (Phase 3): when a member call like `user.save()`
has a known receiver type from TypeEnv, filter candidates by ownerId to
disambiguate methods with the same name across different classes.

Key changes:
- call-processor: build per-file TypeEnv, pass receiverTypeName to resolveCallTarget
- parse-worker: extract receiverTypeName from TypeEnv in worker thread
- resolveCallTarget: new step D filters by ownerId matching receiver type
- utils: extractReceiverName supports C++ field_expression (argument field)
- utils: findEnclosingClassId extracts Go method receiver types
- type-env: handle Go qualified_type, Kotlin user_type/variable_declaration
- parse-worker + parsing-processor: Function added to needsOwner for
  Kotlin/Rust/Python class methods captured as Function nodes

Integration tests added for receiver-constrained resolution across all 9
languages: TypeScript, Java, Python, Go, Rust, C++, C#, Kotlin, PHP.

* feat: NamedImportMap, scoped TypeEnv, broadened signatures + TS rest-param variadic fix

Address all 4 PR #238 review items:
1. Remove redundant lookupFuzzy in processRoutesFromExtracted
2. Add NamedImportMap for TS/Python symbol-level import tracking (Tier 2a)
3. Make TypeEnv scope-aware (Map<scopeKey, Map<varName, type>>) to fix
   non-deterministic receiver resolution across functions
4. Broaden extractMethodSignature: Go/Rust/C++ return types, variadic
   detection for Go/Java/Python/C++/Kotlin/TypeScript rest params

Discovered and fixed: TS rest params (...args) were not detected as
variadic — added rest_pattern detection inside required_parameter nodes.

Integration tests added: scoped receiver, named import disambiguation,
and variadic call resolution for both TypeScript and Python.

* fix: alias import resolution, Go multi-assign TypeEnv, dead code removal

- NamedImportMap now stores {sourcePath, exportedName} so aliased imports
  (import { User as U }) resolve U → User in the source file
- Named binding check moved before empty-allDefs early return in both
  call-processor and symbol-resolver, fixing constructor calls via aliases
- Go extractFromGoShortVarDeclaration iterates all LHS/RHS pairs for
  multi-assignment (user, repo := User{}, Repo{}) instead of only first
- Remove unused TYPED_DECLARATION_TYPES set (TYPED_PARAMETER_TYPES kept)
- Integration tests for both fixes (go-multi-assign, typescript-alias-imports)

* feat: alias import extraction for Kotlin, Rust, PHP, C# + integration tests

Add named import alias extraction to both pipeline paths
(import-processor.ts and parse-worker.ts) for Kotlin, Rust, PHP,
and C#. Add integration test fixtures and tests for all 5 languages
(Python alias extraction already worked, just needed the test).

Each test verifies: class detection, member call resolution through
aliases to correct target files, and IMPORTS edge emission.

* refactor: use SupportedLanguages enum everywhere instead of raw strings

Replace all raw language string literals and `language: string` types
with the SupportedLanguages enum across 10 files. This ensures
compile-time safety for language dispatch and eliminates dead
`language === 'tsx'` checks (tsx maps to TypeScript in the enum).

* fix: tier-ordering bug, re-export chains, PHP grouped imports, Java named imports

- Fix collectTieredCandidates tier-ordering: same-file now checked before
  named bindings, preventing imports from shadowing local definitions
  (matches resolveSymbolInternal priority order)
- Add re-export chain resolution for TypeScript/JavaScript barrel files:
  export { X } from './base' and export type { X } from './base' now
  followed up to 5 hops through NamedImportMap
- Fix PHP grouped import alias extraction: use App\Models\{User, Repo as R}
  now correctly handled in both parse-worker and import-processor
- Add Java NamedImportMap support: import com.example.models.User now
  records User as a named binding for precise disambiguation
- Add 16 new integration tests across TypeScript, PHP, and Java resolvers
  (220 total resolver tests, all passing)

* refactor: consolidate alias extraction + add variadic/constructor/shadow integration tests

- Extract shared named-binding-extraction.ts from duplicate logic in
  import-processor.ts and parse-worker.ts (net -200 lines)
- Deduplicate appendKotlinWildcard (now imported from resolvers/index.ts)
- Add integration tests: constructor calls (Kotlin, Python), variadic
  resolution (Go, Java, C#, C++, Kotlin), re-export chains (Python),
  local definition shadowing (Python, Go)
- Add TODO(stack-graph) for TypeEnv scope key collision
- 225 integration tests passing (was 223)

* fix: PHP non-aliased imports, Python node identity, re-export chain dedup + local-shadow tests

- PHP flat non-aliased imports (use App\Models\User) now stored in NamedImportMap
- PHP grouped non-aliased imports ({User} in {User, Repo as R}) now stored in NamedImportMap
- Python: replace non-public child.id with child.startIndex for node identity
- Extract shared walkBindingChain() from symbol-resolver and call-processor
- Add PHP variadic resolution fixture + test (variadic_parameter already covers PHP)
- Add local-shadow integration tests for Java, C#, Kotlin, Rust, PHP, C++ (6 languages)

* feat: Rust non-aliased use bindings, Kotlin non-aliased imports, re-export chain resolution

Extend NamedImportMap coverage for Rust and Kotlin non-aliased imports:

- Rust: rename collectUseAsClauses → collectRustBindings, extract terminal
  scoped_identifier (use crate::models::User) and identifier in use_list
  (use crate::models::{User, Repo}) into NamedImportMap. This also enables
  pub use re-export chain following via walkBindingChain.
- Kotlin: extend extractKotlinNamedBindings to handle non-aliased imports
  (import com.example.User), skipping wildcard imports.
- Add rust-reexport-chain fixture + 3 integration tests verifying Handler{}
  resolves through mod.rs pub use to handler.rs.
- Add Kotlin heritage + constructor-calls reason assertions for non-aliased
  import-resolved resolution.
- Add C# heritage test documenting namespace import tier behavior.

* fix: skip Kotlin lowercase member imports in NamedImportMap

Member imports like `import util.OneArg.writeAudit` (lowercase last
segment) must not populate NamedImportMap — same-named function imports
from different classes collide, breaking arity-based disambiguation.
Apply the same guard Java already uses: skip lowercase last segments.

* fix: skip spurious path-prefix bindings in Rust grouped imports

collectRustBindings was extracting the path segment (e.g. "models") from
`use crate::models::{User, Repo}` as a spurious NamedImportMap entry.
Skip scoped_identifier nodes that are direct children of scoped_use_list
since they are path prefixes, not importable symbols.

Adds rust-grouped-imports fixture and 4 integration tests verifying both
symbols resolve correctly and no spurious binding leaks through.

* fix: use startIndex in TypeEnv scope key to prevent same-name method collision

Two methods named identically in different classes within the same file
previously shared a scope key, causing non-deterministic type resolution.
Now keys use funcName@startIndex for uniqueness.

Also adds tests documenting destructuring assignment extraction gap.

* test: document C# namespace-level import limitation in named binding extraction

* test: document same-arity overload discrimination limitation in call processor

* perf: parallelize calls/heritage/routes processing in worker path

Worker path now runs processCallsFromExtracted, processHeritageFromExtracted,
and processRoutesFromExtracted via Promise.all instead of sequentially.
Safe because all three only read shared state and write via addRelationship's
dedup guard. Sequential fallback path stays sequential (shared LRU astCache).

Also fixes Rust collectRustBindings spurious path-prefix bindings for 3+ level
grouped imports, and adds @param JSDoc for walkBindingChain's allDefs invariant.

* docs: improve Promise.all safety comment and walkBindingChain JSDoc

Clarify that the parallelization safety comes from disjoint relationship
types + idempotent id-keyed Maps, not from lack of shared state (the
graph is shared). Strengthen allDefs JSDoc to describe silent-miss
consequence of passing pre-filtered results.

* refactor: extract language-specific processing into modular dispatch tables

Phase 1: Extract type binding logic from type-env.ts (635→125 LOC) into
type-extractors/ directory with per-language files and Record<SupportedLanguages,
LanguageTypeConfig> + satisfies dispatch.

Phase 2: Extract 5 config loaders from import-processor.ts into
language-config.ts (removed ~196 LOC of inline loaders).

Phase 3: Convert export-detection.ts switch/case to exhaustive
Record<SupportedLanguages, ExportChecker> + satisfies dispatch table,
fix node: any → SyntaxNode.

Also adds language feature matrix to README.

All 1146 unit tests and 433 integration tests pass.

* refactor: extract type binding logic into type-extractors/ directory (Phase 1)

Extract per-language type extraction from type-env.ts (635→125 LOC) into
type-extractors/ with Record<SupportedLanguages, LanguageTypeConfig> + satisfies
dispatch. 9 per-language files, shared helpers, and barrel index.

* refactor: extract config loaders to language-config.ts (Phase 2)

Move 5 language-specific config loaders and their type interfaces from
import-processor.ts into standalone language-config.ts module.
2026-03-13 13:12:23 +00:00
abhigyanpatwari
8a100a76d3 test: add test suite with vitest (unit + integration + fixtures)
- 59 test files covering unit and integration tests
- vitest config with coverage thresholds and fork pooling
- Test fixtures (mini-repo + multi-language sample code)
- Add vitest + coverage-v8 to devDependencies
- Add test scripts (test, test:integration, test:all, test:watch, test:coverage)
- Move typescript to devDependencies where it belongs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-01 20:07:02 +05:30