GitNexus/gitnexus/test/integration/rust-pointer-expansion-dispatch.test.ts
Gergő Magyar 673dc6968e
fix(rust): see through Box, Rc and Arc on struct field types (#3498) (#3665)
* fix(rust): see through Box, Rc and Arc on struct field types (#3498)

The struct-field normalizer in rust/range-binding.ts cut a type at its
first `<`. A `repo: Box<User>` field was typed `Box`, so `self.repo.save()`
bound nothing. It also stripped a leading `&` but not a lifetime, so a
borrowed field, which always carries one (`&'a User`), came out as
`'a User`.

Box, Rc and Arc auto-deref on a method call, so the field now takes their
first type argument: bare or path-qualified (`std::rc::Rc<User>`), and
nested (`Rc<Box<User>>`). Borrows with a lifetime or `mut` are stripped,
and `Box<dyn Trait>` reduces to the trait through the stripDynBound helper
that parameters already use (#2604).

RefCell, Cell, Mutex, RwLock, Option and Vec are deliberately left alone.
A method on the inner type needs `.borrow()`, `.get()`, `.lock()`,
`.read()`, a match or an index first, so the receiver really is the
wrapper, and a direct call through one must not bind.

Shape arm: rust `decoratedFieldType` moves INVISIBLE-GAP -> RESOLVES, with
the edge on `User::save`. The corpus has no smart-pointer or borrowed
struct field, so the count arm and every other cell are unchanged, and the
corpus edge (2838) and drop (192) sets match main exactly. Scope-capture
fingerprints are unchanged.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(rust): keep opaque pointer fields wrapped

* fix(rust): refuse opaque macro expansions

* test(rust): pin pointer wrapper targets and opacity limits (#3665)

- Assert a same-file Box keeps its own save target while User.save stays
  unbound (review thread on custom same-named wrappers).
- Pin the documented workspace-wide recall limit: an unrelated unresolved
  import or macro_rules! keeps an otherwise valid pointer field wrapped.
- Drop per-case logging and group the opaque/expansion cases in describe
  blocks.
- Collapse the stacked pointer-field receipts in BASELINE.md into one
  current section listing every workspace-wide refusal.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* chore: preserve Rust integration notes

* test(rust): assert complete pointer targets

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-22 21:19:27 +00:00

50 lines
2 KiB
TypeScript

import { describe, it, expect } from 'vitest';
import fs from 'node:fs';
import os from 'node:os';
import path from 'node:path';
import { writeFixtureRepo, runPipelineFromRepo, getRelationships } from './resolvers/helpers.js';
const cases = [
['dependency macro', 'ext::declare_describe!();', false],
['macro-use dependency', '#[macro_use] extern crate ext; declare_describe!();', false],
['attribute macro', '#[ext::declare_describe] struct Marker;', false],
['derive macro', '#[derive(ext::Describe)] struct Marker;', false],
['include-generated items', 'include!("generated.rs");', false],
[
'nested dependency macro',
'fn seed(){ println!("{}", { ext::declare_describe!(); 0 }); }',
false,
],
// Expected limits: unrelated opaque evidence disables inference workspace-wide.
['unrelated external import', 'use serde::Serialize;', false],
['unrelated macro definition', 'macro_rules! noop { () => {}; }', false],
['standard derive', '#[derive(Clone)] struct Marker;', true],
['standard macro expression', 'fn seed(){ println!("seed"); }', true],
] as const;
describe('Rust pointer fields near macro expansion', () => {
it.each(cases)(
'%s keeps expansion-sensitive pointer ownership',
async (_name, prefix, positive) => {
const root = fs.mkdtempSync(path.join(os.tmpdir(), 'pointer-expansion-'));
try {
writeFixtureRepo(root, {
'src/lib.rs': `use std::rc::Rc;
trait Describe { fn describe(&self); }
${prefix}
struct User; impl User { fn describe(&self) {} }
struct Other; impl Other { fn describe(&self) {} }
struct Holder { repo: Rc<User> }
fn probe(h: &Holder) { h.repo.describe(); }
`,
});
const r = await runPipelineFromRepo(root, () => {});
const targets = getRelationships(r, 'CALLS')
.filter((e) => e.source === 'probe')
.map((e) => e.rel.targetId);
expect(targets).toEqual(positive ? ['Function:src/lib.rs:User.describe#0'] : []);
} finally {
fs.rmSync(root, { recursive: true, force: true });
}
},
180000,
);
});