A `union` declaration produced no symbol at all in any of the four
languages that have one. The type never entered the graph, and neither
did anything attached to it — in Rust every `impl Trait for MyUnion`
lost its edge, and the impl's methods were left with a qualifiedName
pointing at a type the graph did not contain.
`union_specifier` / `union_item` were absent from the extraction layer
entirely: no `<x>Types` list on the TS side, no dispatch branch in
either kernel walker.
They join `structTypes` (kind `struct` — NodeKind has no `union`), which
is the extension point the table-driven extractors already provide. The
body guard in extractStruct is untouched, so a bodiless `union U;` stays
a forward declaration and is still skipped, exactly like `struct U;`.
`resolveTypeAliasKind` accepts `union_specifier` too, so
`typedef union { … } N;` takes the typedef's name the way
`typedef struct { … } N;` already did. Without it the anonymous union
body would mint a second `<anonymous>` node beside the alias.
Both walkers change together so kernel<->wasm parity holds.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
First R7b language port. Grammar: tree-sitter-rust pinned =0.24.2 + wasm
vendored from tag 77a3747 (parser.c/scanner.c sha-matched against the
crates.io tarball), replacing the 2023 ABI-14 tree-sitter-wasms build —
the bump alone is precision-positive on the wasm path (receiver-qualified
instance-method resolutions replace ambiguous bare-name matches; node
sections byte-identical on ripgrep/tokio).
Walker mirrors the TS reference bug-for-bug per
docs/design/rust-lang-kernel-port-checklist.md (survey artifact): dead-code
isAsync, impl-pushes-no-scope, the impl-Trait-for-Generic<T> trait-receiver
quirk, phantom const identifiers, use-binding triple emission,
wildcard-use-emits-nothing, scoped-supertrait drop, chained-call re-encode
gated on scoped_identifier, Rocket route macros body-only.
Gates: parity sweeps 0 diffs — ripgrep 101/101, tokio 790/790,
rust-analyzer 1217/1488 (271 deferrals are token-macro-table sources that
error on BOTH arms — grammar-inherent); full-init dump-diffs byte-identical
on all three (3,857 / 13,440 / 39,030 nodes); kernel-rustlang-parity suite
(torture + CRLF + defer) in npm test; full suite green x2 with
CODEGRAPH_KERNEL_EXPECT=1.
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
ctype_lab