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feat(kernel): R4 — Java port with Lombok synthesis, gate passed, default-on

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Java joins the native kernel (codegraph-kernel/src/java.rs), mirroring
the wasm extractor's Java paths bug-for-bug: package namespaces,
imports, javadoc, annotations→decorates, type_list inheritance,
static-final constants, enum constants, anonymous classes (including
the TS side's 0-based-line quirk on the extends ref), method_invocation
calls with the this.field unwrap and the Foo.getInstance().bar() chain
encoding (#645/#608), static-member value reads, method-reference
fn-refs (#756), value-reference edges, and the full Lombok member
synthesizer (#912: Getter/Setter/Data/Value/Builder/ToString/
EqualsAndHashCode/Slf4j-family with taken-member dedup). The shared
docstring/textutil modules moved to crate level. Grammar:
tree-sitter-java 0.23.5, with the wasm grammar vendored from the same
tag (parser.c sha-matched) replacing tree-sitter-wasms' 2023-era build.

Gate (plan §4c): extraction sweeps 100% — gson 262/262, retrofit
341/341, dubbo 4,048/4,048 — plus a Java torture fixture in npm test;
full-init dump-diffs byte-identical on gson (49,766 rows), retrofit
(62,735), and dubbo (441,266 rows); all R2/R3 repos re-verified; Linux
container runs all 23 kernel tests green under CODEGRAPH_KERNEL_EXPECT=1.

The gate caught a real cross-language bug: fn-ref dedupe and value-ref
self-target checks must compare node ID STRINGS, not node-table rows —
ids collide for same-(kind, name, line) nodes, which minified one-line
bundles hit routinely (retrofit's website JS exposed it; latent in the
TS/JS walker since R2, never released). Fixed in both walkers.

Benchmark honesty: dubbo fresh-init on an 11-core Mac is ~flat
(parse-loop wall 5,020→4,394ms; total ~11.3s both arms) because that
wall is main-thread-bound (reads + store), not worker-CPU-bound — the
§6 expectation assumed otherwise. Where worker CPU binds the kernel
delivers: dubbo on a 2-CPU/6GB container drops 27.8-28.6s → 22.3-22.8s
(~1.25×). The identified lever for the many-core headline is decoding
kernel buffers directly into store rows (skipping per-node JS object
materialization); the buffer contract already carries everything.

DEFAULT_ROUTED now includes java. Full suite: 2,467 tests pass.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Colby McHenry
2026-07-16 23:25:29 -05:00
co-authored by Claude Fable 5
parent c8cca9a601
commit 03d54e47a1
19 changed files with 1828 additions and 30 deletions
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__tests__/kernel-tsjs-parity.test.ts
+6 -1
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@@ -60,7 +60,7 @@ let savedEnv: Record<string, string | undefined>;
describe.skipIf(!kernelBuilt)('kernel TS/JS extraction parity', () => {
beforeAll(async () => {
await initGrammars();
await loadGrammarsForLanguages(['typescript', 'tsx', 'javascript', 'jsx']);
await loadGrammarsForLanguages(['typescript', 'tsx', 'javascript', 'jsx', 'java']);
});
beforeEach(() => {
@@ -105,6 +105,11 @@ describe.skipIf(!kernelBuilt)('kernel TS/JS extraction parity', () => {
assertParity('fixtures/torture.js', fs.readFileSync(file, 'utf8'), 'javascript');
});
it('torture fixture (java): Lombok, anonymous classes, method refs, chains', () => {
const file = path.join(FIXTURE_DIR, 'Torture.java');
assertParity('fixtures/Torture.java', fs.readFileSync(file, 'utf8'), 'java');
});
it.each(REAL_SOURCES)('real source parity: %s', (rel) => {
const file = path.join(__dirname, '..', rel);
assertParity(rel, fs.readFileSync(file, 'utf8'), 'typescript');