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Colby Mchenry
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Issue #2338: a Dart getter read (`x.area`, `s.label`) linked nothing, so `codegraph callers area` was empty while `x.grow()` worked, and a member an extension adds to an ENUM (`s.shout()` through `extension ShapeInfo on Shape`) never resolved. Issue #2327: `callers Report` saw only parameter and return types; the type an extension is `on`, field types, and types named in bodies and initializers (`Future<Report?>.value(null)`, riverpod's `final reportProvider = Family<Report?, String>()`) recorded nothing. Causes: - The Dart body walker only emitted calls (a selector with an argument list); a member read is a selector without one, so it produced no ref. - For a typed receiver, resolveMethodOnType looks for `Type::member` and the type's supertype edges; an extension's member is `ShapeInfo::shout`. On a class receiver the call fell through to name matching, which found a unique `twice` by luck; on an enum the "type the project doesn't declare" guard (it only counts classes) returned null. - Type references were taken from function and method signatures only. Fix (TS extractor and the Rust kernel, mirrored): - A member read `x.area` / `x?.area` / `Type.getter` whose receiver is a plain name, and that is not a call, is sent as a `references` ref named `x.area` on the member. The resolver (matchDartMemberRead, ahead of every other strategy) types the receiver — a static read through a project type, a parameter or local in scope, else a field of the enclosing class — and links the getter that type reaches: declared on it or a type it extends, mixes in or implements, else added by an extension on one of those (an unnamed extension only in its own library). The edge is `calls`: a Dart getter is a method node, reading it runs it, and `calls` is what callers, impact and explore's flow follow (as Ruby's paren-less `x.area` and VB.NET's paren-less calls through #2355 already are). A field read, a getter of a type outside the project and an untyped receiver link nothing; there is no name-only fallback. Kotlin/Swift/C#/TS link no instance property reads today. - resolveMethodOnType, for Dart, falls back to a member an extension on the type (or a supertype) adds when no declaration of the type has it. - `references` refs for the type an extension is `on`, a field's declared type and initializer (from its class — Dart fields mint no nodes), an enum field, a top-level variable's type (from the file), a constant's initializer (from the constant), and every type a function body names: locals, generic arguments, casts, type tests, catch clauses. Skipped: a `new`/`const` constructor's class (already instantiates/calls), an import prefix (`p` in `p.Foo`), built-ins, and lowercase names, which in Dart are built-ins (`num`, `dynamic`) or error-recovery artifacts around syntax the grammar predates (dot shorthands). A class whose field holds its own type does not get a self-edge. Verification: __tests__/dart-getter-reads.test.ts (7 tests) and __tests__/dart-type-positions.test.ts (3 tests) fail 8/10 on main (both the TS path and main's kernel) and pass on both arms here; the 2 that pass on main are the controls. New kernel parity fixture TortureReadsTypes.dart (+CRLF); kernel-dart-parity passes with CODEGRAPH_KERNEL_EXPECT=1, and scripts/kernel-parity.mjs over bloc/riverpod/flutter-samples is 0 diffs (2,103 files byte-parity, 300 parse-error files defer as before). tsc and build clean; the issues' repros now list c/a/b for area/label/shout and Holder, ReportX, reportProvider and run for Report. Validation (kernel loaded, main vs this branch): nodes unchanged, 0 edges removed, no new self-loops. - felangel/bloc: 16,372 -> 18,276 edges (+550 getter-read calls, +1,354 type references) - rrousselGit/riverpod: 76,432 -> 81,909 (+598 getter reads, +13 extension-method calls, +4,866 type references) - flutter/samples: 26,133 -> 26,943 (+142 getter reads, +668 type refs) Spot-checked 16 getter reads and 16 type references against source. Index time within noise on riverpod (median of 5 interleaved runs); reads that link nothing are kept for re-resolution like failed calls (riverpod db 92.9 -> 103.2 MB). No EXTRACTION_VERSION bump: it already moved to 28 this release. Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>