feat(core): math + engine spike (split PR 1) #7
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…h: Vec3/Mat4/Quat/PRNG modules + tests\n- engine spike: Engine/TxId/Snapshot + demo motion + tests\n- determinism groundwork; follow-up will document snapshot hash ordering\n\nExtracted from branch echo/geom-broad-phase-docs-smoke.
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Summary by CodeRabbitRelease Notes
WalkthroughAdds a modular deterministic graph-rewriting core: new Engine with transactional begin/apply/commit, deterministic scheduler and footprints, in-memory GraphStore, snapshot hashing, identifiers and TxId, rule model, payload/record types, demo motion/ports rules, math improvements, telemetry (feature-gated), build-time rule family id, many tests, docs, CI/tooling, and Git hooks. Changes
Sequence Diagram(s)sequenceDiagram
participant U as User
participant E as Engine
participant S as Scheduler
participant X as Executor
participant G as GraphStore
participant H as Snapshot
U->>E: begin()
E-->>U: TxId
U->>E: apply(tx, rule_name, scope)
E->>E: resolve rule, run matcher
alt matched
E->>S: enqueue PendingRewrite (Matched)
E-->>U: Applied
else no match
E-->>U: NoMatch
end
U->>E: commit(tx)
E->>S: drain_for_tx(tx)
S-->>E: [PendingRewrite...]
loop ordered per (scope_hash, rule_id)
E->>S: reserve(tx, rewrite)
alt reserved
E->>X: executor(scope)
X->>G: mutate nodes/edges
else aborted
note right of E: rewrite aborted (conflict)
end
end
E->>H: compute_snapshot_hash(G, root)
H-->>E: hash
E->>S: finalize_tx(tx)
E-->>U: Snapshot{root,hash,parent,tx}
Estimated code review effort🎯 4 (Complex) | ⏱️ ~60–90 minutes Focus-review points:
Possibly related PRs
Poem
Pre-merge checks and finishing touches✅ Passed checks (3 passed)
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…\n\n- Module-level contract in snapshot.rs\n- Engine docs reference the canonical traversal and byte layout
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Actionable comments posted: 38
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📒 Files selected for processing (24)
crates/rmg-core/Cargo.toml(1 hunks)crates/rmg-core/src/demo/mod.rs(1 hunks)crates/rmg-core/src/demo/motion.rs(1 hunks)crates/rmg-core/src/engine_impl.rs(1 hunks)crates/rmg-core/src/graph.rs(1 hunks)crates/rmg-core/src/ident.rs(1 hunks)crates/rmg-core/src/lib.rs(1 hunks)crates/rmg-core/src/math/mat4.rs(1 hunks)crates/rmg-core/src/math/mod.rs(1 hunks)crates/rmg-core/src/math/prng.rs(1 hunks)crates/rmg-core/src/math/quat.rs(1 hunks)crates/rmg-core/src/math/vec3.rs(1 hunks)crates/rmg-core/src/payload.rs(1 hunks)crates/rmg-core/src/record.rs(1 hunks)crates/rmg-core/src/rule.rs(1 hunks)crates/rmg-core/src/scheduler.rs(1 hunks)crates/rmg-core/src/snapshot.rs(1 hunks)crates/rmg-core/src/tx.rs(1 hunks)crates/rmg-core/tests/engine_motion_tests.rs(1 hunks)crates/rmg-core/tests/mat4_mul_tests.rs(1 hunks)crates/rmg-core/tests/math_convenience_tests.rs(1 hunks)crates/rmg-core/tests/math_rotation_tests.rs(1 hunks)crates/rmg-core/tests/math_validation.rs(3 hunks)crates/rmg-core/tests/vec3_ops_tests.rs(1 hunks)
🧰 Additional context used
📓 Path-based instructions (1)
**/*.rs
📄 CodeRabbit inference engine (AGENTS.md)
Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Files:
crates/rmg-core/src/demo/mod.rscrates/rmg-core/src/scheduler.rscrates/rmg-core/src/ident.rscrates/rmg-core/tests/mat4_mul_tests.rscrates/rmg-core/src/tx.rscrates/rmg-core/src/math/prng.rscrates/rmg-core/src/snapshot.rscrates/rmg-core/src/math/quat.rscrates/rmg-core/tests/engine_motion_tests.rscrates/rmg-core/tests/math_rotation_tests.rscrates/rmg-core/src/rule.rscrates/rmg-core/src/record.rscrates/rmg-core/tests/math_convenience_tests.rscrates/rmg-core/src/graph.rscrates/rmg-core/tests/math_validation.rscrates/rmg-core/src/math/mod.rscrates/rmg-core/src/demo/motion.rscrates/rmg-core/tests/vec3_ops_tests.rscrates/rmg-core/src/payload.rscrates/rmg-core/src/math/vec3.rscrates/rmg-core/src/math/mat4.rscrates/rmg-core/src/engine_impl.rscrates/rmg-core/src/lib.rs
🧬 Code graph analysis (15)
crates/rmg-core/src/ident.rs (1)
crates/rmg-core/src/engine_impl.rs (1)
new(56-65)
crates/rmg-core/tests/mat4_mul_tests.rs (1)
crates/rmg-core/src/math/mat4.rs (2)
scale(56-65)identity(30-39)
crates/rmg-core/src/snapshot.rs (1)
crates/rmg-core/src/graph.rs (1)
node(21-23)
crates/rmg-core/src/math/quat.rs (2)
crates/rmg-core/src/math/mat4.rs (5)
new(143-145)to_array(148-150)identity(30-39)multiply(168-180)from(218-220)crates/rmg-core/src/math/vec3.rs (5)
new(50-52)to_array(55-57)component(59-61)normalize(127-133)from(137-139)
crates/rmg-core/tests/engine_motion_tests.rs (5)
crates/rmg-core/src/payload.rs (2)
decode_motion_payload(16-27)encode_motion_payload(7-13)crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/engine_impl.rs (3)
new(56-65)apply(83-111)node(153-155)crates/rmg-core/src/demo/motion.rs (1)
motion_rule(36-47)crates/rmg-core/src/graph.rs (1)
node(21-23)
crates/rmg-core/tests/math_rotation_tests.rs (1)
crates/rmg-core/src/math/mat4.rs (5)
rotation_z(100-108)rotation_y(89-97)rotation_x(78-86)rotation_axis_angle(73-75)rotation_from_euler(135-139)
crates/rmg-core/tests/math_convenience_tests.rs (2)
crates/rmg-core/src/math/mat4.rs (7)
from(218-220)identity(30-39)multiply(168-180)to_array(148-150)translation(44-53)new(143-145)scale(56-65)crates/rmg-core/src/math/vec3.rs (5)
from(137-139)to_array(55-57)new(50-52)scale(87-93)zero(64-66)
crates/rmg-core/src/graph.rs (1)
crates/rmg-core/src/engine_impl.rs (2)
node(153-155)insert_node(160-162)
crates/rmg-core/src/demo/motion.rs (4)
crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(16-27)encode_motion_payload(7-13)crates/rmg-core/src/engine_impl.rs (2)
node(153-155)new(56-65)crates/rmg-core/src/graph.rs (1)
node(21-23)
crates/rmg-core/tests/vec3_ops_tests.rs (1)
crates/rmg-core/src/math/vec3.rs (2)
new(50-52)to_array(55-57)
crates/rmg-core/src/payload.rs (1)
crates/rmg-core/src/math/vec3.rs (1)
from(137-139)
crates/rmg-core/src/math/vec3.rs (2)
crates/rmg-core/src/math/mat4.rs (5)
new(143-145)to_array(148-150)scale(56-65)from(218-220)mul(225-227)crates/rmg-core/src/math/quat.rs (5)
new(32-34)to_array(37-39)component(41-43)normalize(95-111)from(162-164)
crates/rmg-core/src/math/mat4.rs (2)
crates/rmg-core/src/math/quat.rs (6)
identity(114-116)from_axis_angle(56-72)new(32-34)to_array(37-39)multiply(75-92)from(162-164)crates/rmg-core/src/math/vec3.rs (6)
scale(87-93)new(50-52)to_array(55-57)from(137-139)mul(184-186)mul(191-193)
crates/rmg-core/src/engine_impl.rs (2)
crates/rmg-core/src/snapshot.rs (1)
compute_snapshot_hash(57-94)crates/rmg-core/src/graph.rs (2)
node(21-23)insert_node(36-38)
crates/rmg-core/src/lib.rs (4)
crates/rmg-core/src/engine_impl.rs (1)
snapshot(141-149)crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(16-27)encode_motion_payload(7-13)crates/rmg-core/src/demo/motion.rs (2)
build_motion_demo_engine(51-66)motion_rule(36-47)
🪛 GitHub Actions: CI
crates/rmg-core/src/lib.rs
[error] 31-31: error[E0761]: file for module math found at both "crates/rmg-core/src/math.rs" and "crates/rmg-core/src/math/mod.rs". delete or rename one of them to remove the ambiguity. Command failed: cargo test
🔇 Additional comments (12)
crates/rmg-core/src/demo/mod.rs (1)
1-3: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgClean and minimal. Make sure
demo::motionhas rustdoc on its public API.Module doc here is fine. Don’t forget rustdoc on the public fns/types inside
motion.rsper your own guidelines. BunBuncrates/rmg-core/tests/vec3_ops_tests.rs (1)
13-22: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgGood coverage of in-place ops.
No fluff. If you ever flip
to_array(&self)instead of by-value, these asserts won’t need changes. BunBuncrates/rmg-core/tests/math_convenience_tests.rs (1)
1-52: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgNice coverage of the basics.
These are the invariants that must never regress. If you ever switch to SIMD or re-order operations, swap the exact equality in identity/scale tests for your fixture tolerance helpers to avoid spurious failures. BunBun
crates/rmg-core/src/demo/motion.rs (2)
26-32: Matcher is fine; minimal and deterministic
Looks good; no hidden allocations, and leverages existing decoder as the gate.
49-66: Engine builder wiring LGTMRoot creation + rule registration is clean and testable. Doc comment present as required.
As per coding guidelines
crates/rmg-core/src/math/quat.rs (2)
45-72: Axis-angle: good degeneracy guard, normalized axis, correct half-angle usage.
118-158: Quaternion→matrix formula looks right and matches your column-major semantics.crates/rmg-core/src/math/mat4.rs (1)
77-108: Rotations and multiply are consistent with right-handed, column-major math.Also applies to: 117-139, 156-180
crates/rmg-core/src/engine_impl.rs (1)
171-176: Scope hash is fine; document byte layout (endianness and id widths).You did this elsewhere for snapshots; mirror it here for consistency.
Add a doc comment specifying the exact byte sequence for
scope_hash.crates/rmg-core/src/math/mod.rs (1)
33-36: ---From: Linus Torvalds torvalds@linux-foundation.org
To: PR Author author@example.com
Cc: code-rabbit@vger.kernel.orgSubject: Re: Review comment on crates/rmg-core/src/math/mod.rs
The review comment is factually incorrect and should be disregarded.
Here's what actually exists in this codebase:
No MSRV declared anywhere. Zero. Zilch. I checked every Cargo.toml. No
rust-versionfield.CI tests only stable. The workflows use
dtolnay/rust-toolchain@stable—not MSRV, not 1.57, not 1.58. Stable. This means the project only cares about compiling on latest stable Rust.The function is already properly documented. It has rustdoc with a "# Panics" section explaining when it panics. Coding guidelines satisfied. Done.
Named captures work fine on stable. They've been in stable since 1.58 (October 2021). If you're only testing stable, you're testing with a compiler that has this feature. No problem.
The review comment incorrectly assumes an MSRV constraint doesn't exist, then flags code as violating that non-existent constraint. That's backwards reasoning. The code doesn't need to work on Rust 1.50. It needs to work on whatever your CI tests, which is stable.
Don't change this. The code is fine.
BunBun
Likely an incorrect or invalid review comment.
crates/rmg-core/src/lib.rs (2)
1-5: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orgSubject: [PATCH] Crate-level docs are actually decent
Finally, something that doesn't make me want to throw my keyboard. Your crate-level documentation is clear, mentions the deterministic execution model, and sets expectations about what's implemented now versus later phases.
BunBun
6-29: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orgSubject: [PATCH] Lint config shows you mean business
This is how you do it.
forbid(unsafe_code),deny(missing_docs), the works. You're not messing around. The clippy configuration is aggressive but sane—you're denying the footguns (unwrap, panic, print debugging) and allowing the pedantic stuff that's just noise.Good.
BunBun
… metadata and docs; restore engine and tests; implement missing math ops for tests; fix lints
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Actionable comments posted: 1
♻️ Duplicate comments (25)
crates/rmg-core/src/ident.rs (1)
22-24: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgEdgeId should be Copy like NodeId and TypeId.
You made NodeId and TypeId Copy (correct), but EdgeId is still Clone-only. It wraps the same 32-byte Hash, which is Copy. Make it Copy or explain why edges are special snowflakes that deserve extra clones.
-#[derive(Clone, PartialEq, Eq, Hash, Debug)] +#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)] pub struct EdgeId(pub Hash);BunBun
crates/rmg-core/tests/vec3_ops_tests.rs (1)
3-11: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgAdd negative scalar multiplication tests.
You test
a * 2.0and2.0 * a, but not with negative scalars. Add cases fora * -2.0and-2.0 * ato verify sign handling in both operator overloads. BunBuncrates/rmg-core/tests/mat4_mul_tests.rs (2)
3-10: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgDefine EPS as a constant and use
<=instead of<.Hardcoding
1e-6in the comparison makes the tolerance invisible. Defineconst EPS: f32 = 1e-6;at file scope and change the comparison to<= EPS. For robustness, consider a relative tolerance for larger values (comment it as a TODO if not implementing now). BunBun
12-21: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgTest both multiplication orders.
You only test
id * s, nots * id. Add:let op2 = s * id; let meth2 = s.multiply(&id); approx_eq16(op2.to_array(), meth2.to_array());This verifies operator routing works in both positions. BunBun
crates/rmg-core/tests/math_validation.rs (3)
6-6: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgNarrow the Clippy allows to specific items.
Don't silence
clippy::panic,clippy::manual_assert, andclippy::non_std_lazy_staticsfor the entire file. Put#[allow(clippy::panic)](and others as needed) on the specific functions that require them. Blanket allows hide real problems. BunBun
16-18: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgUse
expectinstead ofunwrap_or_elsewith panic.Three lines to do what
expectdoes in one:- let fixtures: MathFixtures = serde_json::from_str(RAW_FIXTURES).unwrap_or_else(|err| { - panic!("failed to parse math fixtures at {FIXTURE_PATH}: {err}") - }); + let fixtures: MathFixtures = serde_json::from_str(RAW_FIXTURES) + .unwrap_or_else(|err| panic!("failed to parse math fixtures at {FIXTURE_PATH}: {err}"));Or better yet, use
expectwith a formatted message if you can make it work. BunBun
37-40: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgInclude slice length in assertion message.
When the assertion fires, you'll want to know the actual length. Change the message to include
slice.len():assert!( !slice.is_empty(), - "math fixtures set '{name}' must not be empty" + "math fixtures set '{name}' must not be empty (len={})", slice.len() );Speeds up triage. BunBun
crates/rmg-core/src/tx.rs (1)
1-5: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgPublic field breaks encapsulation. Fix it now.
You documented "auto-incrementing" but exposed the inner
u64publicly, allowing anyone to mint arbitraryTxIdvalues. This is indefensible for a type claiming invariants.Required fixes:
- Make field private:
pub struct TxId(u64);- Add
#[repr(transparent)]for FFI safety- Add accessor:
pub const fn get(self) -> u64 { self.0 }- Add public constructor for FFI/WASM:
pub const fn from_raw(v: u64) -> Self { Self(v) }- Add derives:
PartialOrd, Ord(scheduler needs BTreeMap keys)- Update docs: clarify engine auto-increments internally, external creation allowed, document overflow behavior
- Add Display impl for stringification
//! Transaction identifier types. -/// Thin wrapper around an auto-incrementing transaction identifier. -#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] -pub struct TxId(pub u64); +/// Thin wrapper around a transaction identifier. +/// May be auto-incremented by the engine or supplied externally (e.g., FFI, WASM). +/// Overflow behavior: wraps at u64::MAX (caller responsible for detection). +#[repr(transparent)] +#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)] +pub struct TxId(u64); + +impl TxId { + /// Returns the raw integer value. + #[inline] + pub const fn get(self) -> u64 { self.0 } + + /// Constructs a TxId from a raw u64. External code must not rely on auto-incrementing semantics. + #[inline] + pub const fn from_raw(v: u64) -> Self { Self(v) } +} + +impl core::fmt::Display for TxId { + fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result { + write!(f, "{}", self.0) + } +}Don't half-ass encapsulation. BunBun
crates/rmg-core/src/record.rs (1)
6-31: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgAdd
#[non_exhaustive]and document invariants.Your coding guidelines say "Public Rust APIs must include rustdoc explaining intent, invariants, and usage." You have intent and usage, but zero invariants. That's a violation.
Required fixes:
- Add
#[non_exhaustive]to both structs for semver hygiene- Document invariants for
EdgeRecord:
fromandtomust reference existing nodestymust correspond to a valid type in the schemapayloadencoding/alignment expectations (or state it's opaque)- Document design decision for
NodeRecord: why does it omitNodeId? If the store always supplies IDs externally, say so.- Clarify serde stance: adopt it now or explicitly state serialization is out of scope
+/// Materialised record for a single node stored in the graph. +/// +/// The optional `payload` carries domain-specific bytes (component data, +/// attachments, etc) and is interpreted by higher layers. +/// +/// # Invariants +/// - `ty` must be a valid type identifier in the current schema. +/// - `payload` ownership and encoding expectations are caller-defined. +/// +/// # Design Note +/// The node's identifier is NOT included; the store always supplies IDs externally. +#[non_exhaustive] #[derive(Clone, Debug)] pub struct NodeRecord { /// Type identifier describing the node. pub ty: TypeId, /// Optional payload owned by the node (component data, attachments, etc.). pub payload: Option<Bytes>, } +/// Materialised record for a single edge stored in the graph. +/// +/// # Invariants +/// - `from` and `to` must reference existing nodes in the graph. +/// - `ty` must be a valid edge type in the current schema. +/// - `payload` ownership and encoding are caller-defined. +#[non_exhaustive] #[derive(Clone, Debug)] pub struct EdgeRecord { /// Stable identifier for the edge. pub id: EdgeId, /// Source node identifier. pub from: NodeId, /// Destination node identifier. pub to: NodeId, /// Type identifier describing the edge. pub ty: TypeId, /// Optional payload owned by the edge. pub payload: Option<Bytes>, }Write down your invariants or you'll be reverse-engineering your own code in two months. BunBun
As per coding guidelines
crates/rmg-core/tests/engine_motion_tests.rs (2)
51-60: Assert velocity preservation too — don’t half-test physics.From: Linus Torvalds torvalds@linux-foundation.org
To: {PR_AUTHOR_NAME} <{PR_AUTHOR_EMAIL}>
Cc: code-rabbit@vger.kernel.orgYou moved the position and then forgot the other half of state. Verify velocity is unchanged after the rewrite. Otherwise you’ll miss regressions.
assert_eq!(node.0, [1.5, 1.0, 3.25]); + // Velocity should be preserved by the motion rule. + assert_eq!(node.1, [0.5, -1.0, 0.25]);BunBun
79-82: Commit after NoMatch must be a no-op — prove it.From: Linus Torvalds torvalds@linux-foundation.org
To: {PR_AUTHOR_NAME} <{PR_AUTHOR_EMAIL}>
Cc: code-rabbit@vger.kernel.orgNoMatch without a commit assertion is hand‑waving. Commit should not mutate a damn thing. Make it explicit.
let tx = engine.begin(); let apply = engine.apply(tx, MOTION_RULE_NAME, &entity).unwrap(); assert!(matches!(apply, ApplyResult::NoMatch)); + let _snap = engine.commit(tx).expect("commit no-op"); + // Entity still has no payload. + assert!(engine.node(&entity).unwrap().payload.is_none());BunBun
crates/rmg-core/src/payload.rs (2)
6-13: Specify the wire format — exact layout, size, and endianness.From: Linus Torvalds torvalds@linux-foundation.org
To: {PR_AUTHOR_NAME} <{PR_AUTHOR_EMAIL}>
Cc: code-rabbit@vger.kernel.orgPublic API without a precise wire contract is a time bomb. Spell it out: position then velocity, little‑endian, 24 bytes. Now.
-/// Serialises a 3D position + velocity vector pair into the canonical payload. +/// Serialises a 3D position + velocity pair into the canonical wire format. +/// +/// Layout (little‑endian): +/// - bytes 0..12: position [x, y, z] as 3 × f32 +/// - bytes 12..24: velocity [vx, vy, vz] as 3 × f32 +/// Always exactly 24 bytes. +#[inline] pub fn encode_motion_payload(position: [f32; 3], velocity: [f32; 3]) -> Bytes {BunBun
15-27: Add round‑trip and length‑guard tests to lock behavior.From: Linus Torvalds torvalds@linux-foundation.org
To: {PR_AUTHOR_NAME} <{PR_AUTHOR_EMAIL}>
Cc: code-rabbit@vger.kernel.orgIf you don’t test the contract, someone will break it. Today. Add tests.
} +#[cfg(test)] +mod tests { + use super::*; + #[test] + fn round_trip_ok() { + let pos = [1.0, 2.0, 3.0]; + let vel = [0.5, -1.0, 0.25]; + let bytes = encode_motion_payload(pos, vel); + let (p, v) = decode_motion_payload(&bytes).unwrap(); + assert_eq!(p, pos); + assert_eq!(v, vel); + } + #[test] + fn reject_wrong_len() { + let b = Bytes::from_static(&[0u8; 23]); + assert!(decode_motion_payload(&b).is_none()); + } +}BunBun
crates/rmg-core/tests/math_rotation_tests.rs (1)
4-11: Use relative tolerance — stop the flaky nonsense.From: Linus Torvalds torvalds@linux-foundation.org
To: {PR_AUTHOR_NAME} <{PR_AUTHOR_EMAIL}>
Cc: code-rabbit@vger.kernel.orgAbsolute 1e‑6 fails on real hardware. Scale the tolerance.
fn approx_eq3(a: [f32; 3], b: [f32; 3]) { for i in 0..3 { - assert!( - (a[i] - b[i]).abs() < 1e-6, - "index {i}: {a:?} vs {b:?}" - ); + let diff = (a[i] - b[i]).abs(); + let scale = a[i].abs().max(b[i].abs()).max(1.0); + assert!(diff <= 1e-5 * scale, "index {i}: {a:?} vs {b:?}, diff={diff}, scale={scale}"); } }BunBun
crates/rmg-core/src/scheduler.rs (3)
9-11: Stop exposing internals — make the scheduler crate‑private.From: Linus Torvalds torvalds@linux-foundation.org
To: {PR_AUTHOR_NAME} <{PR_AUTHOR_EMAIL}>
Cc: code-rabbit@vger.kernel.orgLocking public API on internal queues is amateur hour. Hide it.
-#[derive(Debug, Default)] -pub struct DeterministicScheduler { +#[derive(Debug, Default)] +pub(crate) struct DeterministicScheduler { pub(crate) pending: HashMap<TxId, BTreeMap<(Hash, Hash), PendingRewrite>>, }BunBun
13-22: Same for PendingRewrite — crate‑private, not public.From: Linus Torvalds torvalds@linux-foundation.org
To: {PR_AUTHOR_NAME} <{PR_AUTHOR_EMAIL}>
Cc: code-rabbit@vger.kernel.orgNobody outside the crate needs this struct. Shrink the blast radius.
-#[derive(Debug)] -pub struct PendingRewrite { +#[derive(Debug)] +pub(crate) struct PendingRewrite {BunBun
24-31: Document the ordering invariant for drains — be explicit.From: Linus Torvalds torvalds@linux-foundation.org
To: {PR_AUTHOR_NAME} <{PR_AUTHOR_EMAIL}>
Cc: code-rabbit@vger.kernel.orgCallers shouldn’t guess your sort key. Write it down.
impl DeterministicScheduler { - pub(crate) fn drain_for_tx(&mut self, tx: TxId) -> Vec<PendingRewrite> { + /// Drains all pending rewrites for `tx` in deterministic order. + /// + /// Ordering is ascending by `(scope_hash, rule_id)` as stored in the + /// inner `BTreeMap`, guaranteeing stable execution across runs. + pub(crate) fn drain_for_tx(&mut self, tx: TxId) -> Vec<PendingRewrite> { self.pending .remove(&tx) .map(|map| map.into_values().collect()) .unwrap_or_default() } }BunBun
crates/rmg-core/src/rule.rs (1)
25-36: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots flyingrobots@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgMake RewriteRule debuggable. Stop logging hieroglyphs.
You shipped a public Rule type with no Debug. Tests/logs become guesswork. Add a concise Debug impl.
pub struct RewriteRule { @@ pub executor: ExecuteFn, } + +impl core::fmt::Debug for RewriteRule { + fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result { + f.debug_struct("RewriteRule") + .field("id", &self.id) + .field("name", &self.name) + .finish() + } +}BunBun
crates/rmg-core/src/demo/motion.rs (2)
15-23: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots flyingrobots@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgDrop if-let chains. You didn’t declare MSRV; don’t play roulette.
Let-chains need Rust 1.80+. You didn’t pin MSRV. Use boring nested if-lets.
- if let Some(node) = store.node_mut(scope) - && let Some(payload) = &mut node.payload - && let Some((mut pos, vel)) = decode_motion_payload(payload) - { - pos[0] += vel[0]; - pos[1] += vel[1]; - pos[2] += vel[2]; - *payload = encode_motion_payload(pos, vel); - } + if let Some(node) = store.node_mut(scope) { + if let Some(payload) = &mut node.payload { + if let Some((mut pos, vel)) = decode_motion_payload(payload) { + pos[0] += vel[0]; + pos[1] += vel[1]; + pos[2] += vel[2]; + *payload = encode_motion_payload(pos, vel); + } + } + }BunBun
37-46: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots flyingrobots@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgStop re-hashing static bytes on every call. Compute once.
Cache the rule id lazily. Spare the cycles and the noise.
+use once_cell::sync::Lazy; @@ +static MOTION_RULE_ID: Lazy<Hash> = Lazy::new(|| { + let mut hasher = Hasher::new(); + hasher.update(MOTION_RULE_NAME.as_bytes()); + hasher.finalize().into() +}); pub fn motion_rule() -> RewriteRule { - let mut hasher = Hasher::new(); - hasher.update(MOTION_RULE_NAME.as_bytes()); - let id: Hash = hasher.finalize().into(); RewriteRule { - id, + id: *MOTION_RULE_ID, name: MOTION_RULE_NAME, left: PatternGraph { nodes: vec![] }, matcher: motion_matcher, executor: motion_executor, } }BunBun
crates/rmg-core/src/graph.rs (2)
12-17: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots flyingrobots@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgStop exposing your guts. Make storage fields non-public.
Public maps blow invariants and determinism. Hide them now.
pub struct GraphStore { /// Mapping from node identifiers to their materialised records. - pub nodes: BTreeMap<NodeId, NodeRecord>, + pub(crate) nodes: BTreeMap<NodeId, NodeRecord>, /// Mapping from source node to outbound edge records. - pub edges_from: BTreeMap<NodeId, Vec<EdgeRecord>>, + pub(crate) edges_from: BTreeMap<NodeId, Vec<EdgeRecord>>, }BunBun
25-28: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots flyingrobots@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgDocument edge iteration order. Don’t let callers guess.
Say “insertion order; not sorted.” Snapshots sort by EdgeId; traversal shouldn’t assume order.
- /// Returns an iterator over edges that originate from the provided node. + /// Returns an iterator over edges that originate from the provided node. + /// + /// Ordering: yields in insertion order (not sorted). Snapshot hashing + /// normalizes by sorting edges by `EdgeId`. Callers needing stable order + /// should sort explicitly. pub fn edges_from(&self, id: &NodeId) -> impl Iterator<Item = &EdgeRecord> {BunBun
crates/rmg-core/src/engine_impl.rs (1)
24-33: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots flyingrobots@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgTransactions never close, rules overwrite silently, and lookup is linear. Fix it properly.
Close txs, error on duplicate rule names, and index rules by id. Also mark begin as must_use.
-use std::collections::HashMap; +use std::collections::{HashMap, HashSet}; @@ #[derive(Debug, Error)] pub enum EngineError { /// The supplied transaction identifier did not exist or was already closed. #[error("transaction not found")] UnknownTx, /// A rule was requested that has not been registered with the engine. #[error("rule not registered: {0}")] UnknownRule(String), + /// Attempted to register a rule with a duplicate name. + #[error("duplicate rule name: {0}")] + DuplicateRuleName(&'static str), } @@ pub struct Engine { store: GraphStore, - rules: HashMap<&'static str, RewriteRule>, + rules: HashMap<&'static str, RewriteRule>, + rules_by_id: HashMap<Hash, &'static str>, scheduler: DeterministicScheduler, tx_counter: u64, current_root: NodeId, last_snapshot: Option<Snapshot>, + open_txs: HashSet<u64>, } @@ pub fn new(store: GraphStore, root: NodeId) -> Self { Self { store, - rules: HashMap::new(), + rules: HashMap::new(), + rules_by_id: HashMap::new(), scheduler: DeterministicScheduler::default(), tx_counter: 0, current_root: root, - last_snapshot: None, + last_snapshot: None, + open_txs: HashSet::new(), } } @@ - /// Registers a rewrite rule so it can be referenced by name. - pub fn register_rule(&mut self, rule: RewriteRule) { - self.rules.insert(rule.name, rule); - } + /// Registers a rewrite rule so it can be referenced by name. + pub fn register_rule(&mut self, rule: RewriteRule) -> Result<(), EngineError> { + if self.rules.contains_key(rule.name) { + return Err(EngineError::DuplicateRuleName(rule.name)); + } + self.rules_by_id.insert(rule.id, rule.name); + self.rules.insert(rule.name, rule); + Ok(()) + } @@ - /// Begins a new transaction and returns its identifier. - pub fn begin(&mut self) -> TxId { + /// Begins a new transaction and returns its identifier. + #[must_use] + pub fn begin(&mut self) -> TxId { self.tx_counter += 1; - TxId(self.tx_counter) + let id = self.tx_counter; + self.open_txs.insert(id); + TxId(id) } @@ - if tx.0 == 0 || tx.0 > self.tx_counter { + if tx.0 == 0 || !self.open_txs.contains(&tx.0) { return Err(EngineError::UnknownTx); } @@ - pub fn commit(&mut self, tx: TxId) -> Result<Snapshot, EngineError> { - if tx.0 == 0 || tx.0 > self.tx_counter { + pub fn commit(&mut self, tx: TxId) -> Result<Snapshot, EngineError> { + if tx.0 == 0 || !self.open_txs.contains(&tx.0) { return Err(EngineError::UnknownTx); } @@ - self.last_snapshot = Some(snapshot.clone()); + self.last_snapshot = Some(snapshot.clone()); + self.open_txs.remove(&tx.0); Ok(snapshot) } @@ - fn rule_by_id(&self, id: &Hash) -> Option<&RewriteRule> { - self.rules.values().find(|rule| &rule.id == id) - } + fn rule_by_id(&self, id: &Hash) -> Option<&RewriteRule> { + self.rules_by_id + .get(id) + .and_then(|name| self.rules.get(name)) + }Update call sites to handle Result from register_rule (e.g., propagate or handle in demo). Verify with:
#!/bin/bash set -euo pipefail rg -n --type=rust '\bregister_rule\s*\(' -C2BunBun
Also applies to: 45-52, 54-65, 67-70, 72-76, 89-91, 118-120, 165-169
crates/rmg-core/src/lib.rs (2)
31-31: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots flyingrobots@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgPublic modules without docs? Violates your own rules. Add rustdoc.
Add brief rustdoc above math and demo. It’s in your coding guidelines.
- pub mod math; + /// Math subsystem (Vec3, Mat4, Quat, PRNG) for deterministic transforms. + pub mod math; @@ - pub mod demo; + /// Demo implementations showcasing engine capabilities (e.g., motion rule). + pub mod demo;As per coding guidelines.
BunBunAlso applies to: 42-42
44-54: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots flyingrobots@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgRe-exports need breadcrumbs. Don’t dump a wall of types.
Add one-liners so users know what each group is for.
-// Re-exports for stable public API +// Re-exports for stable public API +/// Core identifier types and constructors for nodes, types, and edges. pub use ident::{make_node_id, make_type_id, EdgeId, Hash, NodeId, TypeId}; +/// Graph node and edge record types. pub use record::{EdgeRecord, NodeRecord}; +/// In-memory graph store. pub use graph::GraphStore; +/// Rule pattern/matcher/executor primitives. pub use rule::{ExecuteFn, MatchFn, PatternGraph, RewriteRule}; +/// Transaction identifier type. pub use tx::TxId; +/// Deterministic scheduler and pending rewrite entries. pub use scheduler::{DeterministicScheduler, PendingRewrite}; +/// Immutable snapshot with deterministic hash. pub use snapshot::Snapshot; +/// Motion payload encoding/decoding helpers. pub use payload::{decode_motion_payload, encode_motion_payload}; +/// Rewrite engine and error types. pub use engine_impl::{ApplyResult, Engine, EngineError}; +/// Motion demo utilities. pub use demo::motion::{build_motion_demo_engine, motion_rule, MOTION_RULE_NAME};As per coding guidelines.
BunBun
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📒 Files selected for processing (18)
crates/rmg-core/src/demo/mod.rs(1 hunks)crates/rmg-core/src/demo/motion.rs(1 hunks)crates/rmg-core/src/engine_impl.rs(1 hunks)crates/rmg-core/src/graph.rs(1 hunks)crates/rmg-core/src/ident.rs(1 hunks)crates/rmg-core/src/lib.rs(1 hunks)crates/rmg-core/src/payload.rs(1 hunks)crates/rmg-core/src/record.rs(1 hunks)crates/rmg-core/src/rule.rs(1 hunks)crates/rmg-core/src/scheduler.rs(1 hunks)crates/rmg-core/src/snapshot.rs(1 hunks)crates/rmg-core/src/tx.rs(1 hunks)crates/rmg-core/tests/engine_motion_tests.rs(1 hunks)crates/rmg-core/tests/mat4_mul_tests.rs(1 hunks)crates/rmg-core/tests/math_convenience_tests.rs(1 hunks)crates/rmg-core/tests/math_rotation_tests.rs(1 hunks)crates/rmg-core/tests/math_validation.rs(3 hunks)crates/rmg-core/tests/vec3_ops_tests.rs(1 hunks)
🧰 Additional context used
📓 Path-based instructions (1)
**/*.rs
📄 CodeRabbit inference engine (AGENTS.md)
Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Files:
crates/rmg-core/tests/math_rotation_tests.rscrates/rmg-core/src/record.rscrates/rmg-core/tests/engine_motion_tests.rscrates/rmg-core/tests/mat4_mul_tests.rscrates/rmg-core/tests/vec3_ops_tests.rscrates/rmg-core/tests/math_convenience_tests.rscrates/rmg-core/src/ident.rscrates/rmg-core/src/demo/mod.rscrates/rmg-core/src/demo/motion.rscrates/rmg-core/src/graph.rscrates/rmg-core/src/scheduler.rscrates/rmg-core/tests/math_validation.rscrates/rmg-core/src/lib.rscrates/rmg-core/src/engine_impl.rscrates/rmg-core/src/payload.rscrates/rmg-core/src/snapshot.rscrates/rmg-core/src/tx.rscrates/rmg-core/src/rule.rs
🧠 Learnings (1)
📚 Learning: 2025-10-26T02:42:44.664Z
Learnt from: CR
PR: flyingrobots/echo#0
File: AGENTS.md:0-0
Timestamp: 2025-10-26T02:42:44.664Z
Learning: Applies to **/*.rs : Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Applied to files:
crates/rmg-core/src/lib.rs
🧬 Code graph analysis (10)
crates/rmg-core/tests/engine_motion_tests.rs (5)
crates/rmg-core/src/payload.rs (2)
decode_motion_payload(16-27)encode_motion_payload(7-13)crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/engine_impl.rs (3)
new(56-65)apply(83-111)node(153-155)crates/rmg-core/src/demo/motion.rs (1)
motion_rule(36-47)crates/rmg-core/src/graph.rs (1)
node(21-23)
crates/rmg-core/tests/vec3_ops_tests.rs (1)
crates/rmg-core/src/math/vec3.rs (2)
new(30-32)to_array(35-37)
crates/rmg-core/tests/math_convenience_tests.rs (2)
crates/rmg-core/src/math/vec3.rs (3)
from(121-123)to_array(35-37)new(30-32)crates/rmg-core/src/math/mat4.rs (4)
from(82-84)multiply(34-46)to_array(22-24)new(17-19)
crates/rmg-core/src/ident.rs (1)
crates/rmg-core/src/engine_impl.rs (1)
new(56-65)
crates/rmg-core/src/demo/motion.rs (4)
crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(16-27)encode_motion_payload(7-13)crates/rmg-core/src/engine_impl.rs (2)
node(153-155)new(56-65)crates/rmg-core/src/graph.rs (1)
node(21-23)
crates/rmg-core/src/graph.rs (1)
crates/rmg-core/src/engine_impl.rs (2)
node(153-155)insert_node(160-162)
crates/rmg-core/src/lib.rs (4)
crates/rmg-core/src/engine_impl.rs (1)
snapshot(141-149)crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(16-27)encode_motion_payload(7-13)crates/rmg-core/src/demo/motion.rs (2)
build_motion_demo_engine(51-66)motion_rule(36-47)
crates/rmg-core/src/engine_impl.rs (2)
crates/rmg-core/src/snapshot.rs (1)
compute_snapshot_hash(57-94)crates/rmg-core/src/graph.rs (2)
node(21-23)insert_node(36-38)
crates/rmg-core/src/payload.rs (1)
crates/rmg-core/src/math/vec3.rs (1)
from(121-123)
crates/rmg-core/src/snapshot.rs (1)
crates/rmg-core/src/graph.rs (1)
node(21-23)
🔇 Additional comments (6)
crates/rmg-core/src/ident.rs (3)
1-6: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgClean module header and type alias.
The Hash type alias is documented clearly and the 256-bit commitment is explicit. Good. BunBun
8-13: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgNodeId derives are correct.
Copy, Ord, and Hash all make sense. The stability guarantee is documented. Good work. BunBun
26-38: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgHashing constructors are clean.
BLAKE3, stable labels, good documentation. The absence of
make_edge_idis fine—edges can construct their own IDs from content if needed. BunBuncrates/rmg-core/src/demo/mod.rs (1)
1-2: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgLGTM.
Simple module declaration with clear documentation. Nothing to complain about. BunBun
crates/rmg-core/tests/vec3_ops_tests.rs (1)
13-22: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgCompound assignment tests look good.
You hit +=, -=, and *= with a fractional multiplier. Solid. BunBun
crates/rmg-core/tests/math_convenience_tests.rs (1)
1-51: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgExcellent test coverage for math conveniences.
Identity, translation, scale, and Vec3 basis constants—all tested cleanly. The distinction between
transform_pointandtransform_directionis validated correctly. No complaints. BunBun
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com> Signed-off-by: James Ross <james@flyingrobots.dev>
There was a problem hiding this comment.
Actionable comments posted: 7
Caution
Some comments are outside the diff and can’t be posted inline due to platform limitations.
⚠️ Outside diff range comments (2)
crates/rmg-core/Cargo.toml (1)
1-10: Addrust-version = "1.68"to[package]section and enforce across toolchain + CI.Your dependencies enforce a hard floor: thiserror requires Rust 1.68+, which is the binding constraint. blake3 supports 1.66.1 and serde with derive requires 1.56. The maximum is 1.68—use that, not placeholders.
Verification findings:
- Cargo.toml contains NO rust-version declaration
- rust-toolchain.toml does not exist at repo root
- CI workflows (.github/workflows/ci.yml) pin to floating @stable on lines 18, 33, and 48
Fix all three:
- Add
rust-version = "1.68"tocrates/rmg-core/Cargo.toml[package]- Create
rust-toolchain.tomlat repo root withchannel = "1.68"- Update CI to use
dtolnay/rust-toolchain@1.68instead of@stableNo hand-waving. Ship it pinned or don't ship it.
BunBun
crates/rmg-core/src/math/mat4.rs (1)
88-91: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgMake
to_arrayconst. It is trivially const; stop leaving perf on the table.- pub fn to_array(self) -> [f32; 16] { + pub const fn to_array(self) -> [f32; 16] { self.data }BunBun
♻️ Duplicate comments (27)
crates/rmg-core/tests/math_validation.rs (2)
16-17: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgWhy are you still writing three lines for a one-liner?
You were told: use
expect(&format!("..."))instead ofunwrap_or_else(|err| panic!(...)). It's shorter, clearer, and does the exact same thing. Did you even read the previous review? BunBunApply this diff:
- let fixtures: MathFixtures = serde_json::from_str(RAW_FIXTURES) - .unwrap_or_else(|err| panic!("failed to parse math fixtures at {FIXTURE_PATH}: {err}")); + let fixtures: MathFixtures = + serde_json::from_str(RAW_FIXTURES) + .expect(&format!("failed to parse math fixtures at {FIXTURE_PATH}"));
6-6: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgStill ignoring the blanket-allow issue? Scope it properly.
You were told to narrow this to the specific items that need it. Lines 352 and 363 have the panics for malformed fixtures—put
#[allow(clippy::panic)]on those blocks, not the whole damn file. Andclippy::non_std_lazy_statics? Does it even trigger? Drop it unless you prove otherwise.Blanket silencing is how real bugs sneak past. Fix it. BunBun
crates/rmg-core/src/math/prng.rs (1)
96-97: CRITICAL: Still using weak low bits after previous review flagged this.I already told you in the last review: xoroshiro128+ has LOW LINEAR COMPLEXITY in the lowest bits, confirmed by web search and multiple sources. Masking with
& (span - 1)uses those garbage low bits and introduces bias.The fix was HANDED to you on a silver platter:
- let value = if span.is_power_of_two() { - self.next_u64() & (span - 1) + let value = if span.is_power_of_two() { + // Use high bits to avoid low‑bit linear artifacts. + let k = span.trailing_zeros(); + self.next_u64() >> (64 - k) } else {And per your own coding guidelines, update the rustdoc (lines 77-83) to explain WHY high bits are used for power-of-two ranges. Document the damn invariants.
This is a split PR "to de-risk determinism changes" per your PR objectives, but you're shipping a deterministic stream of BIASED random numbers. Fix it before merge.
BunBun
crates/rmg-core/Cargo.toml (1)
8-8: Duplicate: README path still broken—this was flagged before.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgI already called this out in the prior review on lines 5–10:
readme = "../../README.md"escapes the package boundary. You haven't fixed it.cargo packagestill won't include it. Do not ship this. Fix it now: either a crate-local README or workspace inheritance. BunBuncrates/rmg-core/tests/vec3_ops_tests.rs (1)
4-12: Add negative scalar test cases.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgYou're exercising both multiplication orders, which is good. But you're missing the sign-handling case. Add assertions with negative scalars to ensure both
a * -2.0and-2.0 * aproduce correctly negated components. BunBunApply this diff to add negative scalar coverage:
#[test] fn add_sub_mul_ops_work() { let a = Vec3::new(1.0, -2.0, 0.5); let b = Vec3::new(-3.0, 4.0, 1.5); assert_eq!((a + b).to_array(), [-2.0, 2.0, 2.0]); assert_eq!((a - b).to_array(), [4.0, -6.0, -1.0]); assert_eq!((a * 2.0).to_array(), [2.0, -4.0, 1.0]); assert_eq!((2.0 * a).to_array(), [2.0, -4.0, 1.0]); + assert_eq!((a * -2.0).to_array(), [-2.0, 4.0, -1.0]); + assert_eq!((-2.0 * a).to_array(), [-2.0, 4.0, -1.0]); }crates/rmg-core/tests/mat4_mul_tests.rs (2)
4-8: Hardcoded tolerance is lazy.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgDefine a file-level constant. Change the comparison to
<=for boundary correctness. For future non-trivial cases, a relative term would avoid false negatives on larger magnitudes. BunBunApply this diff:
+const EPS: f32 = 1e-6; + fn approx_eq16(a: [f32; 16], b: [f32; 16]) { for i in 0..16 { - assert!((a[i] - b[i]).abs() < 1e-6, "index {i}: {a:?} vs {b:?}"); + assert!((a[i] - b[i]).abs() <= EPS, "index {i}: {a:?} vs {b:?}"); } }
10-19: You're only testing one multiplication order.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgAdd the reverse case:
s * idvia operator and method to ensure both operand positions route correctly. BunBunApply this diff:
#[test] fn mat4_mul_operator_matches_method() { let s = Mat4::scale(2.0, 3.0, 4.0); let id = Mat4::identity(); - // operator + // operator (left) let op = id * s; - // method + // method (left) let meth = id.multiply(&s); approx_eq16(op.to_array(), meth.to_array()); + // operator (right) + let op2 = s * id; + // method (right) + let meth2 = s.multiply(&id); + approx_eq16(op2.to_array(), meth2.to_array()); }crates/rmg-core/src/tx.rs (1)
1-5: Public field on a newtype wrapper is architectural malpractice.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgYou documented this as "auto-incrementing," then exposed the inner u64 so anyone can mint
TxId(0xDEADBEEF). That's not "auto" anything—it's a free-for-all.The past review nailed it: make the field private, add
pub fn from_raw(u64) -> Selfandpub fn get(self) -> u64, deriveOrdandPartialOrd(scheduler uses TxId in BTreeMap), addDisplay, fix the docs to admit external construction is allowed, and document overflow behavior.Don't ship a public newtype with a public field and pretend it enforces invariants. BunBun
Apply the fix from the past review:
//! Transaction identifier types. -/// Thin wrapper around an auto-incrementing transaction identifier. -#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] -pub struct TxId(pub u64); +/// Thin wrapper around a transaction identifier. +/// May be auto-incremented by the engine or supplied externally (e.g., FFI, WASM). +/// Overflow behavior: wraps at u64::MAX (caller responsible for detection). +#[repr(transparent)] +#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)] +pub struct TxId(u64); + +impl TxId { + /// Returns the raw integer value. + #[inline] + pub const fn get(self) -> u64 { self.0 } + + /// Constructs a TxId from a raw u64. External code must not rely on auto-incrementing semantics. + #[inline] + pub const fn from_raw(v: u64) -> Self { Self(v) } +} + +impl core::fmt::Display for TxId { + fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result { + write!(f, "{}", self.0) + } +}crates/rmg-core/src/scheduler.rs (3)
7-11: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgStill public after being told to fix it? Make it pub(crate) and document the ordering invariant.
Your coding guidelines say "Public Rust APIs...must include rustdoc comments explaining...invariants"—you have ZERO documentation on the ordering guarantee that makes this "deterministic." Past review already told you to make this pub(crate). Are you ignoring feedback or just hoping it goes away?
Apply this diff NOW:
-/// Ordering queue that guarantees rewrites execute deterministically. +/// Ordering queue that guarantees rewrites execute deterministically. +/// +/// Pending rewrites are keyed by `(scope_hash, rule_id)` in a `BTreeMap`, +/// ensuring stable insertion and drain order across runs. The scheduler +/// is internal machinery; use `Engine::apply` and `Engine::commit`. #[derive(Debug, Default)] -pub struct DeterministicScheduler { +pub(crate) struct DeterministicScheduler { pub(crate) pending: HashMap<TxId, BTreeMap<(Hash, Hash), PendingRewrite>>, }BunBun
13-22: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgSame problem: still public. Make it crate-private.
/// Internal representation of a rewrite waiting to be applied. #[derive(Debug)] -pub struct PendingRewrite { +pub(crate) struct PendingRewrite { /// Transaction identifier that enqueued the rewrite. pub tx: TxId,BunBun
24-30: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgStill no docs on ordering after being told to add them.
The BTreeMap gives you deterministic order but you're not SAYING that anywhere. Document it:
impl DeterministicScheduler { + /// Drains all pending rewrites for `tx` in deterministic order. + /// + /// Ordering is ascending by `(scope_hash, rule_id)` as stored in the + /// inner `BTreeMap`, guaranteeing stable execution across runs. pub(crate) fn drain_for_tx(&mut self, tx: TxId) -> Vec<PendingRewrite> {BunBun
crates/rmg-core/tests/engine_motion_tests.rs (2)
52-61: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgYou're only checking half the payload. Verify velocity too.
The motion payload has BOTH position and velocity. You decode
node.1(velocity) but never assert it. A regression could zero out velocity and you'd never catch it.assert_eq!(node.0, [1.5, 1.0, 3.25]); + assert_eq!(node.1, [0.5, -1.0, 0.25]);BunBun
80-83: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgNoMatch should be followed by a no-op commit assertion.
You're testing that
applyreturnsNoMatch, but you're not verifying that committing the transaction is actually a no-op. The scheduler could leak state.let tx = engine.begin(); let apply = engine.apply(tx, MOTION_RULE_NAME, &entity).unwrap(); assert!(matches!(apply, ApplyResult::NoMatch)); + let _snap = engine.commit(tx).expect("commit no-op"); + // Entity still has no payload. + assert!(engine.node(&entity).unwrap().payload.is_none());BunBun
crates/rmg-core/src/payload.rs (2)
6-13: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgThis is a wire format. Document the exact layout and endianness.
You're serializing floats to bytes. That's a WIRE FORMAT. Cross-language interop, determinism, everything depends on knowing the exact byte layout. "3D position + velocity" is not enough.
-/// Serialises a 3D position + velocity vector pair into the canonical payload. +/// Serialises a 3D position + velocity pair into the canonical payload. +/// +/// Layout (little‑endian): +/// - bytes 0..12: position [x, y, z] as 3 × f32 +/// - bytes 12..24: velocity [vx, vy, vz] as 3 × f32 +/// +/// Always produces exactly 24 bytes. This is the canonical wire format +/// for deterministic cross-language interoperability. pub fn encode_motion_payload(position: [f32; 3], velocity: [f32; 3]) -> Bytes {BunBun
15-27: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgNo tests? Add round-trip and length validation tests.
As per coding guidelines. You're shipping a codec with ZERO unit tests. That's asking for format drift.
} + +#[cfg(test)] +mod tests { + use super::*; + + #[test] + fn round_trip_ok() { + let pos = [1.0, 2.0, 3.0]; + let vel = [0.5, -1.0, 0.25]; + let bytes = encode_motion_payload(pos, vel); + let (p, v) = decode_motion_payload(&bytes).unwrap(); + assert_eq!(p, pos); + assert_eq!(v, vel); + } + + #[test] + fn reject_wrong_len() { + let b = Bytes::from_static(&[0u8; 23]); + assert!(decode_motion_payload(&b).is_none()); + } +}BunBun
crates/rmg-core/tests/math_rotation_tests.rs (1)
5-9: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgFixed absolute tolerance? That's going to flake.
Absolute 1e-6 works until someone runs this on a CPU with slightly different rounding. Use relative tolerance scaled to the magnitude.
fn approx_eq3(a: [f32; 3], b: [f32; 3]) { for i in 0..3 { - assert!((a[i] - b[i]).abs() < 1e-6, "index {i}: {a:?} vs {b:?}"); + let diff = (a[i] - b[i]).abs(); + let scale = b[i].abs().max(1.0); + assert!(diff <= 1e-5 * scale, "index {i}: {a:?} vs {b:?}"); } }BunBun
crates/rmg-core/src/graph.rs (2)
12-17: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgPublic fields on a public struct? You just locked yourself into that layout forever.
pub nodesandpub edges_frommeans anyone can mutate the internals, bypass invariants, break ordering guarantees. Make them private NOW. You already have accessor methods.#[derive(Default)] pub struct GraphStore { /// Mapping from node identifiers to their materialised records. - pub nodes: BTreeMap<NodeId, NodeRecord>, + pub(crate) nodes: BTreeMap<NodeId, NodeRecord>, /// Mapping from source node to outbound edge records. - pub edges_from: BTreeMap<NodeId, Vec<EdgeRecord>>, + pub(crate) edges_from: BTreeMap<NodeId, Vec<EdgeRecord>>, }BunBun
25-28: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgDocument the edge iteration order.
You're returning an iterator but not saying what order edges come out. Insertion order? Sorted? Random? Users will make assumptions and then you're stuck.
- /// Returns an iterator over edges that originate from the provided node. + /// Returns an iterator over edges that originate from the provided node. + /// + /// Edges are yielded in insertion order (the order they were added). + /// This is NOT sorted by `EdgeId`. Snapshot hashing sorts separately + /// for determinism; callers needing stable order should sort explicitly. pub fn edges_from(&self, id: &NodeId) -> impl Iterator<Item = &EdgeRecord> {BunBun
crates/rmg-core/src/demo/motion.rs (1)
37-48: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgYou're hashing the same static string on every call. Cache it.
Every time someone calls
motion_rule()you're recomputing the hash ofMOTION_RULE_NAME. That string is&'static str—it NEVER changes. Useonce_cell::sync::Lazyorstd::sync::LazyLock(Rust 1.80+) to compute once.+use std::sync::LazyLock; + +static MOTION_RULE_ID: LazyLock<Hash> = LazyLock::new(|| { + let mut hasher = Hasher::new(); + hasher.update(MOTION_RULE_NAME.as_bytes()); + hasher.finalize().into() +}); + /// Demo rule used by tests: move an entity by its velocity. #[must_use] pub fn motion_rule() -> RewriteRule { - let mut hasher = Hasher::new(); - hasher.update(MOTION_RULE_NAME.as_bytes()); - let id: Hash = hasher.finalize().into(); RewriteRule { - id, + id: *MOTION_RULE_ID,Or use
once_cell::sync::Lazyif you're stuck on an older MSRV (but you have NO declared MSRV, so that's another problem).BunBun
crates/rmg-core/src/rule.rs (1)
25-36: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgNo Debug on RewriteRule makes logs useless.
Function pointers aren't Debug, so you can't auto-derive. But you CAN manually implement Debug to print the
idandnamewhile omitting the callbacks.+impl std::fmt::Debug for RewriteRule { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + f.debug_struct("RewriteRule") + .field("id", &self.id) + .field("name", &self.name) + .field("left", &self.left) + .finish_non_exhaustive() + } +} + /// Descriptor for a rewrite rule registered with the engine.Now you can log rules without manual formatting and tests become readable.
BunBun
crates/rmg-core/src/record.rs (2)
18-31: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgSame issue: no #[non_exhaustive] on EdgeRecord either.
+/// Materialised record for a single edge stored in the graph. +/// +/// # Invariants +/// - `from` and `to` must reference existing nodes in the graph. +/// - `ty` must be a valid edge type in the current schema. +/// - `payload` ownership and encoding are caller-defined. +#[non_exhaustive] #[derive(Clone, Debug)] pub struct EdgeRecord {BunBun
10-16: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgPast review said "✅ Addressed" but I don't see #[non_exhaustive]. Did you forget to push the commit?
The previous review explicitly requested
#[non_exhaustive]on both structs and you marked it addressed in commit 345b971. Where is it? Public structs without#[non_exhaustive]lock you into never adding fields without breaking semver.Also missing: invariant documentation that
tymust be valid in the schema, and design note about whyNodeIdisn't included.+/// Materialised record for a single node stored in the graph. +/// +/// The optional `payload` carries domain-specific bytes (component data, +/// attachments, etc) and is interpreted by higher layers. +/// +/// # Invariants +/// - `ty` must be a valid type identifier in the current schema. +/// - `payload` ownership and encoding expectations are caller-defined. +/// +/// # Design Note +/// The node's identifier is NOT included; the store always supplies IDs externally. +#[non_exhaustive] #[derive(Clone, Debug)] pub struct NodeRecord {BunBun
crates/rmg-core/src/math/vec3.rs (1)
43-46: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgMake
to_arrayconst and add symmetricFrom<Vec3>conversion.This is boilerplate. Do it once, reap benefits everywhere.
- pub fn to_array(self) -> [f32; 3] { + pub const fn to_array(self) -> [f32; 3] { self.data }Add:
impl From<[f32; 3]> for Vec3 { @@ } + +impl From<Vec3> for [f32; 3] { + fn from(v: Vec3) -> Self { + v.to_array() + } +}BunBun
crates/rmg-core/src/math/mat4.rs (1)
154-159: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgImplement borrowed Mul so
&a * &bdoesn’t move.You’ve got the value-by-value impl only. Add the borrowed one and stop forcing copies in hot paths.
impl core::ops::Mul for Mat4 { type Output = Self; fn mul(self, rhs: Self) -> Self::Output { self.multiply(&rhs) } } + +impl core::ops::Mul<&Mat4> for &Mat4 { + type Output = Mat4; + fn mul(self, rhs: &Mat4) -> Self::Output { + self.multiply(rhs) + } +}BunBun
crates/rmg-core/src/ident.rs (1)
22-24: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgMake
EdgeIdCopy like the others. Why is this the odd one out?It’s a 32-byte value. Derive Copy to match NodeId/TypeId and kill pointless clones.
-#[derive(Clone, PartialEq, Eq, Hash, Debug)] +#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)] pub struct EdgeId(pub Hash);BunBun
crates/rmg-core/src/lib.rs (2)
32-35: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgPublic modules without rustdoc under
#![deny(missing_docs)]? That’s a hard CI fail. Fix it.Add rustdoc above
pub mod math;andpub mod demo;. You wrote the rule; follow it.As per coding guidelines — Based on learnings
- pub mod math; + /// Deterministic math: Vec3, Quat, Mat4, and PRNG utilities used by the engine. + pub mod math; @@ - pub mod demo; + /// Demo implementations showcasing engine capabilities (e.g., the motion rule). + pub mod demo;BunBun
45-55: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgRe-exports need breadcrumbs. Give users a map, not a dump.
One-line docs for each group make the crate root usable without spelunking.
-// Re-exports for stable public API +// Re-exports for stable public API +/// Motion demo: rule constructor, engine builder, and constants. pub use demo::motion::{build_motion_demo_engine, motion_rule, MOTION_RULE_NAME}; +/// Graph rewriting engine types and results. pub use engine_impl::{ApplyResult, Engine, EngineError}; +/// In-memory graph store. pub use graph::GraphStore; +/// Core identifiers and constructors. pub use ident::{make_node_id, make_type_id, EdgeId, Hash, NodeId, TypeId}; +/// Motion payload encoding/decoding helpers. pub use payload::{decode_motion_payload, encode_motion_payload}; +/// Graph node/edge records. pub use record::{EdgeRecord, NodeRecord}; +/// Rewrite rule APIs. pub use rule::{ExecuteFn, MatchFn, PatternGraph, RewriteRule}; +/// Deterministic scheduler primitives. pub use scheduler::{DeterministicScheduler, PendingRewrite}; +/// Immutable snapshot with deterministic hash. pub use snapshot::Snapshot; +/// Transaction identifier for snapshot lineage. pub use tx::TxId;BunBun
📜 Review details
Configuration used: CodeRabbit UI
Review profile: ASSERTIVE
Plan: Pro
📒 Files selected for processing (25)
crates/rmg-cli/Cargo.toml(1 hunks)crates/rmg-core/Cargo.toml(1 hunks)crates/rmg-core/src/demo/mod.rs(1 hunks)crates/rmg-core/src/demo/motion.rs(1 hunks)crates/rmg-core/src/graph.rs(1 hunks)crates/rmg-core/src/ident.rs(1 hunks)crates/rmg-core/src/lib.rs(1 hunks)crates/rmg-core/src/math/mat4.rs(3 hunks)crates/rmg-core/src/math/prng.rs(2 hunks)crates/rmg-core/src/math/vec3.rs(3 hunks)crates/rmg-core/src/payload.rs(1 hunks)crates/rmg-core/src/record.rs(1 hunks)crates/rmg-core/src/rule.rs(1 hunks)crates/rmg-core/src/scheduler.rs(1 hunks)crates/rmg-core/src/tx.rs(1 hunks)crates/rmg-core/tests/engine_motion_tests.rs(1 hunks)crates/rmg-core/tests/mat4_mul_tests.rs(1 hunks)crates/rmg-core/tests/math_convenience_tests.rs(1 hunks)crates/rmg-core/tests/math_rotation_tests.rs(1 hunks)crates/rmg-core/tests/math_validation.rs(2 hunks)crates/rmg-core/tests/vec3_ops_tests.rs(1 hunks)crates/rmg-ffi/Cargo.toml(1 hunks)crates/rmg-wasm/Cargo.toml(1 hunks)docs/decision-log.md(1 hunks)docs/execution-plan.md(1 hunks)
🧰 Additional context used
📓 Path-based instructions (4)
**/*.rs
📄 CodeRabbit inference engine (AGENTS.md)
Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Files:
crates/rmg-core/tests/math_convenience_tests.rscrates/rmg-core/tests/engine_motion_tests.rscrates/rmg-core/src/tx.rscrates/rmg-core/src/math/prng.rscrates/rmg-core/src/demo/motion.rscrates/rmg-core/tests/mat4_mul_tests.rscrates/rmg-core/src/demo/mod.rscrates/rmg-core/tests/math_rotation_tests.rscrates/rmg-core/src/graph.rscrates/rmg-core/src/ident.rscrates/rmg-core/src/record.rscrates/rmg-core/src/scheduler.rscrates/rmg-core/src/rule.rscrates/rmg-core/src/lib.rscrates/rmg-core/src/math/vec3.rscrates/rmg-core/tests/vec3_ops_tests.rscrates/rmg-core/src/math/mat4.rscrates/rmg-core/src/payload.rscrates/rmg-core/tests/math_validation.rs
docs/execution-plan.md
📄 CodeRabbit inference engine (AGENTS.md)
Start each work session by updating Today’s Intent in docs/execution-plan.md
Files:
docs/execution-plan.md
docs/**
📄 CodeRabbit inference engine (AGENTS.md)
Document meaningful design choices in the docs/ directory (specs, diagrams, memorials) and keep impacted docs in sync with code changes
Files:
docs/execution-plan.mddocs/decision-log.md
docs/decision-log.md
📄 CodeRabbit inference engine (AGENTS.md)
Record milestones, blockers, decisions, outcomes, and next steps in docs/decision-log.md
Files:
docs/decision-log.md
🧠 Learnings (1)
📚 Learning: 2025-10-26T02:42:44.664Z
Learnt from: CR
PR: flyingrobots/echo#0
File: AGENTS.md:0-0
Timestamp: 2025-10-26T02:42:44.664Z
Learning: Applies to **/*.rs : Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Applied to files:
crates/rmg-core/src/lib.rs
🧬 Code graph analysis (12)
crates/rmg-core/tests/math_convenience_tests.rs (2)
crates/rmg-core/src/math/mat4.rs (7)
from(149-151)identity(15-21)multiply(101-113)to_array(89-91)translation(24-30)new(84-86)scale(33-39)crates/rmg-core/src/math/vec3.rs (5)
from(130-132)to_array(44-46)new(34-36)scale(71-77)zero(39-41)
crates/rmg-core/tests/engine_motion_tests.rs (5)
crates/rmg-core/src/payload.rs (2)
decode_motion_payload(16-27)encode_motion_payload(7-13)crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/engine_impl.rs (3)
new(56-65)apply(83-111)node(153-155)crates/rmg-core/src/demo/motion.rs (1)
motion_rule(37-48)crates/rmg-core/src/graph.rs (1)
node(21-23)
crates/rmg-core/src/demo/motion.rs (4)
crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(16-27)encode_motion_payload(7-13)crates/rmg-core/src/graph.rs (1)
node(21-23)crates/rmg-core/src/engine_impl.rs (2)
node(153-155)new(56-65)
crates/rmg-core/tests/mat4_mul_tests.rs (1)
crates/rmg-core/src/math/mat4.rs (2)
scale(33-39)identity(15-21)
crates/rmg-core/tests/math_rotation_tests.rs (1)
crates/rmg-core/src/math/mat4.rs (5)
rotation_z(58-63)rotation_y(50-55)rotation_x(42-47)rotation_axis_angle(73-75)rotation_from_euler(66-70)
crates/rmg-core/src/graph.rs (1)
crates/rmg-core/src/engine_impl.rs (2)
node(153-155)insert_node(160-162)
crates/rmg-core/src/ident.rs (1)
crates/rmg-core/src/engine_impl.rs (1)
new(56-65)
crates/rmg-core/src/lib.rs (4)
crates/rmg-core/src/engine_impl.rs (1)
snapshot(141-149)crates/rmg-core/src/demo/motion.rs (2)
build_motion_demo_engine(52-67)motion_rule(37-48)crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(16-27)encode_motion_payload(7-13)
crates/rmg-core/src/math/vec3.rs (2)
crates/rmg-core/src/math/mat4.rs (1)
new(84-86)crates/rmg-core/src/math/quat.rs (1)
new(19-22)
crates/rmg-core/tests/vec3_ops_tests.rs (1)
crates/rmg-core/src/math/vec3.rs (2)
new(34-36)to_array(44-46)
crates/rmg-core/src/math/mat4.rs (2)
crates/rmg-core/src/math/quat.rs (3)
identity(127-129)new(19-22)from_axis_angle(37-53)crates/rmg-core/src/math/vec3.rs (2)
scale(71-77)new(34-36)
crates/rmg-core/src/payload.rs (1)
crates/rmg-core/src/math/vec3.rs (1)
from(130-132)
🔇 Additional comments (10)
crates/rmg-core/src/math/prng.rs (1)
37-37: Good: Backticks for algorithm reference.Minor doc improvement. Carry on.
BunBun
docs/execution-plan.md (1)
41-44: Today's Intent update is solid.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgThe PR #7 merge-prep entry properly documents focus, definition of done, and actionable exit criteria. This is how you keep a living doc alive. BunBun
crates/rmg-core/tests/vec3_ops_tests.rs (1)
14-23: In-place operators look correct.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgThe assign-op tests properly exercise mutability and the expected semantics. Clean and straightforward. BunBun
crates/rmg-core/src/demo/mod.rs (1)
1-2: Clean module declaration.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgRustdoc is present and explains intent. The public motion submodule is appropriately exposed. No complaints. BunBun
docs/decision-log.md (1)
17-17: Decision-log entry is properly structured.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgThe PR #7 entry documents context, decision, rationale, and next steps. It correctly captures the scope split and the docs commitment. This is how you maintain project memory. BunBun
crates/rmg-core/tests/math_convenience_tests.rs (1)
1-51: Comprehensive convenience test coverage.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgIdentity no-op, translation point/direction distinction, scale behavior, and basis constants are all covered with appropriate assertions. The tests exercise the expected semantics and use exact equality where it's safe. Well done. BunBun
crates/rmg-wasm/Cargo.toml (1)
5-10: Metadata additions are appropriate.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgStandard Cargo manifest metadata for crates.io. Description, license, repository, keywords, and categories are all reasonable. No behavioral changes. BunBun
crates/rmg-core/src/math/mat4.rs (2)
14-39: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgIdentity/translation/scale layout: column-major is correct.
The constants line up with column-major indexing and your transform routines. No complaints.
BunBun
41-47: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgRotations look right-handed/column-major; keep it that way and lock with tests.
Sign placement matches the standard GLM-style Y and Z rotations. Make sure tests cover +π/2 on unit axes to prevent accidental convention flips later.
Add/ensure unit tests that assert:
- rotation_y(PI/2) * (0,0,1) -> (1,0,0)
- rotation_z(PI/2) * (1,0,0) -> (0,1,0)
BunBun
Also applies to: 49-55, 57-63
crates/rmg-core/src/math/vec3.rs (1)
17-21: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgZERO and zero(): good.
Baseline ergonomics are in place and const-friendly.
BunBun
Also applies to: 38-41
There was a problem hiding this comment.
Actionable comments posted: 1
♻️ Duplicate comments (3)
crates/rmg-core/src/graph.rs (1)
25-28: Still no ordering documentation—fix it.The previous review told you to document that edges are iterated in insertion order, not sorted. You didn't do it. Add a doc line stating that iteration is insertion-order and callers must sort explicitly if they need deterministic traversal.
Apply this diff:
- /// Returns an iterator over edges that originate from the provided node. + /// Returns an iterator over edges that originate from the provided node. + /// + /// Edges are yielded in insertion order. For deterministic traversal (e.g., snapshot hashing), + /// callers must sort by `EdgeId`. pub fn edges_from(&self, id: &NodeId) -> impl Iterator<Item = &EdgeRecord> {BunBun
crates/rmg-core/tests/engine_motion_tests.rs (1)
64-84: Still not calling commit after NoMatch—lazy.The previous review told you to call
engine.commit(tx)after the NoMatch and verify it's a no-op. You ignored it. Add the commit and assert the entity's payload is still None to prove the scheduler didn't leak state.Apply this diff:
let tx = engine.begin(); let apply = engine.apply(tx, MOTION_RULE_NAME, &entity).unwrap(); assert!(matches!(apply, ApplyResult::NoMatch)); + let _snap = engine.commit(tx).expect("commit should succeed"); + // Verify entity still has no payload after no-op commit. + assert!(engine.node(&entity).unwrap().payload.is_none()); }BunBun
crates/rmg-core/src/payload.rs (1)
1-33: Where are the tests? Previous review asked for them.The prior review suggested adding round-trip and invalid-length tests. You didn't add them. Tests lock down the wire format and prevent accidental breakage. Add a test module.
Add at the end of the file:
+ +#[cfg(test)] +mod tests { + use super::*; + + #[test] + fn round_trip() { + let pos = [1.0, 2.0, 3.0]; + let vel = [0.5, -1.0, 0.25]; + let bytes = encode_motion_payload(pos, vel); + let (p, v) = decode_motion_payload(&bytes).unwrap(); + assert_eq!(p, pos); + assert_eq!(v, vel); + } + + #[test] + fn reject_wrong_length() { + let short = Bytes::from_static(&[0u8; 23]); + assert!(decode_motion_payload(&short).is_none()); + let long = Bytes::from_static(&[0u8; 25]); + assert!(decode_motion_payload(&long).is_none()); + } +}BunBun
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📒 Files selected for processing (5)
crates/rmg-core/src/demo/motion.rs(1 hunks)crates/rmg-core/src/graph.rs(1 hunks)crates/rmg-core/src/payload.rs(1 hunks)crates/rmg-core/src/rule.rs(1 hunks)crates/rmg-core/tests/engine_motion_tests.rs(1 hunks)
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**/*.rs
📄 CodeRabbit inference engine (AGENTS.md)
Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Files:
crates/rmg-core/src/demo/motion.rscrates/rmg-core/tests/engine_motion_tests.rscrates/rmg-core/src/graph.rscrates/rmg-core/src/payload.rscrates/rmg-core/src/rule.rs
🧬 Code graph analysis (3)
crates/rmg-core/src/demo/motion.rs (4)
crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(22-33)encode_motion_payload(13-19)crates/rmg-core/src/graph.rs (1)
node(21-23)crates/rmg-core/src/engine_impl.rs (2)
node(153-155)new(56-65)
crates/rmg-core/tests/engine_motion_tests.rs (5)
crates/rmg-core/src/payload.rs (2)
decode_motion_payload(22-33)encode_motion_payload(13-19)crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/engine_impl.rs (3)
new(56-65)apply(83-111)node(153-155)crates/rmg-core/src/demo/motion.rs (2)
motion_rule(37-55)motion_rule(46-54)crates/rmg-core/src/graph.rs (1)
node(21-23)
crates/rmg-core/src/graph.rs (1)
crates/rmg-core/src/engine_impl.rs (2)
node(153-155)insert_node(160-162)
🪛 GitHub Actions: CI
crates/rmg-core/src/demo/motion.rs
[error] 38-38: unresolved crate 'once_cell'. If you intended to use it, add it to Cargo.toml (e.g., cargo add once_cell).
[error] 37-37: E0308: mismatched types: expected RewriteRule, found ()
🔇 Additional comments (14)
crates/rmg-core/src/graph.rs (4)
7-17: Good encapsulation, doc is adequate.You fixed the field visibility from the previous review—
pub(crate)properly hides the internals. The doc comment explains the spike context and future direction. No complaints here.
20-23: LGTM.Simple accessor with clear docs. No issues.
30-33: Fine.Mutable accessor with clear intent. No issues.
35-38: Correct."Inserts or replaces" is accurate for BTreeMap::insert. No issues.
crates/rmg-core/tests/engine_motion_tests.rs (2)
7-62: Test covers both position and velocity—good.You added the velocity assertion at line 61 as requested in the previous review. The test validates both components of the motion payload and confirms deterministic hashing across two engines. Well done.
86-104: Error path test is fine.Validates that applying an unknown rule returns the correct error variant with the rule name. No need to commit since this is testing the error path before any rewrite is scheduled.
crates/rmg-core/src/payload.rs (2)
6-19: Documentation is now complete—good.You added the layout, endianness, and byte ranges as requested in the previous review. The implementation correctly uses little-endian encoding for cross-language determinism.
21-33: Decoding logic is sound.Length guard, chunk iteration, and little-endian parsing are all correct. Error handling via
Optionis appropriate.crates/rmg-core/src/demo/motion.rs (3)
14-25: Nested if-let is correct.You fixed the let-chains issue from the previous review. The nested structure works on all Rust versions and is clear.
27-33: Matcher logic is fine.Clean use of
and_thenchaining to validate payload presence and decodability.
57-74: Demo builder is fine.Straightforward engine initialization with a world root and motion rule registration. No issues here.
crates/rmg-core/src/rule.rs (3)
5-10: PatternGraph looks good.Debug derive is present as requested in the previous review. Docs explain the pattern metadata clearly.
12-16: Function pointer types are clear.Both type aliases have appropriate doc comments explaining their purpose.
18-37: RewriteRule struct is well-documented.Debug derive is present as requested in the previous review. The struct and all fields have clear rustdoc comments explaining intent and usage, meeting the coding guidelines.
…1) rule lookup; snapshot reachability; tests\n\n- scheduler: crate-private, add scope_hash field and explicit sort in drain_for_tx\n- engine: track live transactions, mark closed on commit; add rules_by_id index; #[must_use] begin; tighten UnknownTx\n- snapshot: hash only reachable subgraph from root; keep sorted node/edge order\n- ident: EdgeId Copy + add make_edge_id (public)\n- graph: privatize fields; add insert_edge; document edge iteration order; derive Clone\n- payload: doc clarifications + round-trip/len tests\n- tests: add snapshot reachability and multiple-tx determinism; expand no-match commit to be no-op; improve Mat4 mul test\n- fix crate readme paths for publishability (add per-crate README)\n\nNote: no push per request.
…, Quat identity, and deg/rad roundtrip\n\n- New math_additional_tests.rs consolidates math-only checks\n- Keep tolerances and avoid float_cmp; no engine changes
… and add negative-scalar cases\n\n- Engine::register_rule returns Result and rejects duplicates\n- Update call sites (demo/tests) to handle Result\n- math_rotation_tests: relative/absolute tolerance with clearer failure msg\n- math_validation: use expect for fixture parse; silence unused FIXTURE_PATH\n- vec3_ops_tests: add negative scalar cases
…from_euler; perf: add borrowed Vec3 ops; demo: cache motion rule id via LazyLock; tests: no-op commit payload assert; fixtures message shows length; edge iterator doc tightened\n\n- Add &Vec3 operator impls to reduce moves\n- Use std::sync::LazyLock for rule id (pedantic clippy)\n- Document deterministic conventions in math\n- Tighten GraphStore::edges_from ordering docs\n- Ensure NoMatch commit keeps payload None
…drop once_cell dependency
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Actionable comments posted: 8
Caution
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⚠️ Outside diff range comments (2)
crates/rmg-core/src/math/vec3.rs (2)
43-46: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgMake to_array const already.
This was flagged before and you ignored it. The method trivially returns a Copy array. Make it const so it works in const contexts and tests. Stop dragging your feet.
- pub fn to_array(self) -> [f32; 3] { + pub const fn to_array(self) -> [f32; 3] { self.data }BunBun
129-133: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgAdd the reverse From impl for symmetry.
You have
From<[f32;3]> for Vec3. AddFrom<Vec3> for [f32;3]for ergonomics. This was suggested before.impl From<[f32; 3]> for Vec3 { fn from(value: [f32; 3]) -> Self { Self { data: value } } } + +impl From<Vec3> for [f32; 3] { + fn from(v: Vec3) -> Self { + v.to_array() + } +}BunBun
♻️ Duplicate comments (8)
crates/rmg-core/tests/mat4_mul_tests.rs (1)
4-8: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgYou still ignored the const suggestion.
The previous review told you to define
const EPS: f32 = 1e-6;and use<=instead of<. You did neither. Hardcoded magic numbers scattered everywhere make maintenance a pain. When you need to adjust tolerance, you hunt through files. Don't make me repeat myself. BunBunApply this diff:
+const EPS: f32 = 1e-6; + fn approx_eq16(a: [f32; 16], b: [f32; 16]) { for i in 0..16 { - assert!((a[i] - b[i]).abs() < 1e-6, "index {i}: {a:?} vs {b:?}"); + assert!((a[i] - b[i]).abs() <= EPS, "index {i}: {a:?} vs {b:?}"); } }crates/rmg-core/tests/math_validation.rs (1)
6-7: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgYou said "narrow scope" but did file-level.
The comment on line 6 says "keep scope narrow" but you still slapped
#![allow(clippy::panic)]on the whole file. The only explicit panic source I see is theexpect()call in the lazy static on line 18-20. Put#[allow(clippy::panic)]on thatLazy::newclosure or the lazy static itself, not the entire file. When you add new test functions later, you'll mask issues. BunBunApply this diff:
-// Intentionally allow `panic!` for fixture parse failures; keep scope narrow. -#![allow(clippy::panic)] use once_cell::sync::Lazy; use serde::Deserialize; use rmg_core::math::{self, Mat4, Prng, Quat, Vec3}; #[allow(dead_code)] const FIXTURE_PATH: &str = "crates/rmg-core/tests/fixtures/math-fixtures.json"; static RAW_FIXTURES: &str = include_str!("fixtures/math-fixtures.json"); +#[allow(clippy::panic)] static FIXTURES: Lazy<MathFixtures> = Lazy::new(|| {crates/rmg-core/src/math/mat4.rs (1)
162-167: Add borrowedMulfor better ergonomics.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgYou implemented
Mulfor owned values, butMat4isCopyand consumers will often want to multiply references without forcing a copy at the call site. The past review specifically asked forimpl Mul<&Mat4> for &Mat4. Add it.impl core::ops::Mul for Mat4 { type Output = Self; fn mul(self, rhs: Self) -> Self::Output { self.multiply(&rhs) } } + +impl core::ops::Mul<&Mat4> for &Mat4 { + type Output = Mat4; + fn mul(self, rhs: &Mat4) -> Self::Output { + self.multiply(rhs) + } +}BunBun
crates/rmg-core/src/graph.rs (2)
11-17: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgGood: storage internals are no longer public.
pub(crate) on nodes/edges_from matches the intended encapsulation.
BunBun
25-31: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgOrdering doc is clear.
Insertion order noted, with callers told to sort for determinism. That’s the right contract.
BunBun
crates/rmg-core/src/engine_impl.rs (2)
54-57: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgFinally: transactions actually close.
live_txs + #[must_use] + removal on commit fix the lifecycle lie. This is the semantics you should’ve had from the start.
BunBun
Also applies to: 88-95, 135-138, 154-156
51-51: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgO(1) id lookup acknowledged.
rules_by_id plugs the obvious perf hole for executor dispatch.
BunBun
crates/rmg-core/src/ident.rs (1)
26-30: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgDomain-separate your hashes or enjoy cross‑type collisions.
Right now, make_type_id/make_node_id/make_edge_id hash only the label. Same label → identical bytes across spaces. That’s a loaded footgun. Prefix the hash input with a type tag and update docs. Also drop the stale #[allow(dead_code)] on make_edge_id.
As per coding guidelines.
Apply:
@@ -/// Produces a stable type identifier derived from a label using BLAKE3. +/// Produces a stable, domain‑separated type identifier (prefix b"type:") using BLAKE3. pub fn make_type_id(label: &str) -> TypeId { let mut hasher = Hasher::new(); - hasher.update(label.as_bytes()); + hasher.update(b"type:"); + hasher.update(label.as_bytes()); TypeId(hasher.finalize().into()) } @@ -/// Produces a stable node identifier derived from a label using BLAKE3. +/// Produces a stable, domain‑separated node identifier (prefix b"node:") using BLAKE3. pub fn make_node_id(label: &str) -> NodeId { let mut hasher = Hasher::new(); - hasher.update(label.as_bytes()); + hasher.update(b"node:"); + hasher.update(label.as_bytes()); NodeId(hasher.finalize().into()) } @@ -/// Produces a stable edge identifier derived from a label using BLAKE3. -#[allow(dead_code)] +/// Produces a stable, domain‑separated edge identifier (prefix b"edge:") using BLAKE3. pub fn make_edge_id(label: &str) -> EdgeId { let mut hasher = Hasher::new(); - hasher.update(label.as_bytes()); + hasher.update(b"edge:"); + hasher.update(label.as_bytes()); EdgeId(hasher.finalize().into()) }Optional: add a quick unit test asserting make_type_id("foo").0 != make_node_id("foo").0.
BunBun
Also applies to: 33-37, 41-45
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📒 Files selected for processing (29)
crates/rmg-cli/Cargo.toml(1 hunks)crates/rmg-cli/README.md(1 hunks)crates/rmg-core/Cargo.toml(1 hunks)crates/rmg-core/README.md(1 hunks)crates/rmg-core/src/demo/motion.rs(1 hunks)crates/rmg-core/src/engine_impl.rs(1 hunks)crates/rmg-core/src/graph.rs(1 hunks)crates/rmg-core/src/ident.rs(1 hunks)crates/rmg-core/src/lib.rs(1 hunks)crates/rmg-core/src/math/mat4.rs(3 hunks)crates/rmg-core/src/math/vec3.rs(3 hunks)crates/rmg-core/src/payload.rs(1 hunks)crates/rmg-core/src/scheduler.rs(1 hunks)crates/rmg-core/src/snapshot.rs(1 hunks)crates/rmg-core/src/tx.rs(1 hunks)crates/rmg-core/tests/engine_motion_tests.rs(1 hunks)crates/rmg-core/tests/mat4_mul_tests.rs(1 hunks)crates/rmg-core/tests/math_additional_tests.rs(1 hunks)crates/rmg-core/tests/math_rotation_tests.rs(1 hunks)crates/rmg-core/tests/math_validation.rs(2 hunks)crates/rmg-core/tests/snapshot_reachability_tests.rs(1 hunks)crates/rmg-core/tests/tx_lifecycle_tests.rs(1 hunks)crates/rmg-core/tests/vec3_ops_tests.rs(1 hunks)crates/rmg-ffi/Cargo.toml(1 hunks)crates/rmg-ffi/README.md(1 hunks)crates/rmg-ffi/src/lib.rs(3 hunks)crates/rmg-wasm/Cargo.toml(1 hunks)crates/rmg-wasm/README.md(1 hunks)crates/rmg-wasm/src/lib.rs(3 hunks)
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📓 Path-based instructions (1)
**/*.rs
📄 CodeRabbit inference engine (AGENTS.md)
Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Files:
crates/rmg-core/tests/vec3_ops_tests.rscrates/rmg-core/src/demo/motion.rscrates/rmg-core/tests/math_rotation_tests.rscrates/rmg-core/tests/math_validation.rscrates/rmg-core/src/snapshot.rscrates/rmg-ffi/src/lib.rscrates/rmg-core/tests/snapshot_reachability_tests.rscrates/rmg-core/tests/mat4_mul_tests.rscrates/rmg-core/src/payload.rscrates/rmg-core/tests/engine_motion_tests.rscrates/rmg-core/src/ident.rscrates/rmg-core/src/tx.rscrates/rmg-core/src/graph.rscrates/rmg-wasm/src/lib.rscrates/rmg-core/tests/math_additional_tests.rscrates/rmg-core/src/scheduler.rscrates/rmg-core/tests/tx_lifecycle_tests.rscrates/rmg-core/src/lib.rscrates/rmg-core/src/math/vec3.rscrates/rmg-core/src/engine_impl.rscrates/rmg-core/src/math/mat4.rs
🧠 Learnings (1)
📚 Learning: 2025-10-26T02:42:44.664Z
Learnt from: CR
PR: flyingrobots/echo#0
File: AGENTS.md:0-0
Timestamp: 2025-10-26T02:42:44.664Z
Learning: Applies to **/*.rs : Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Applied to files:
crates/rmg-core/src/lib.rs
🧬 Code graph analysis (19)
crates/rmg-core/tests/vec3_ops_tests.rs (1)
crates/rmg-core/src/math/vec3.rs (2)
new(34-36)to_array(44-46)
crates/rmg-core/src/demo/motion.rs (4)
crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(26-37)encode_motion_payload(17-23)crates/rmg-core/src/engine_impl.rs (2)
node(173-175)new(61-72)crates/rmg-core/src/graph.rs (1)
node(21-23)
crates/rmg-core/tests/math_rotation_tests.rs (1)
crates/rmg-core/src/math/mat4.rs (6)
scale(33-39)rotation_z(58-63)rotation_y(50-55)rotation_x(42-47)rotation_axis_angle(81-83)rotation_from_euler(74-78)
crates/rmg-core/tests/math_validation.rs (3)
crates/rmg-core/src/math/mat4.rs (1)
new(92-94)crates/rmg-core/src/math/vec3.rs (1)
new(34-36)crates/rmg-core/src/math/quat.rs (1)
new(19-22)
crates/rmg-core/src/snapshot.rs (1)
crates/rmg-core/src/graph.rs (1)
node(21-23)
crates/rmg-ffi/src/lib.rs (1)
crates/rmg-core/src/tx.rs (1)
from_raw(14-16)
crates/rmg-core/tests/snapshot_reachability_tests.rs (3)
crates/rmg-core/src/payload.rs (1)
encode_motion_payload(17-23)crates/rmg-core/src/ident.rs (3)
make_edge_id(42-46)make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/engine_impl.rs (1)
new(61-72)
crates/rmg-core/tests/mat4_mul_tests.rs (1)
crates/rmg-core/src/math/mat4.rs (2)
scale(33-39)identity(15-21)
crates/rmg-core/src/payload.rs (1)
crates/rmg-core/src/math/vec3.rs (1)
from(130-132)
crates/rmg-core/tests/engine_motion_tests.rs (5)
crates/rmg-core/src/payload.rs (2)
decode_motion_payload(26-37)encode_motion_payload(17-23)crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/engine_impl.rs (4)
new(61-72)apply(101-129)node(173-175)snapshot(161-169)crates/rmg-core/src/demo/motion.rs (1)
motion_rule(37-50)crates/rmg-core/src/graph.rs (1)
node(21-23)
crates/rmg-core/src/ident.rs (1)
crates/rmg-core/src/engine_impl.rs (1)
new(61-72)
crates/rmg-core/src/graph.rs (1)
crates/rmg-core/src/engine_impl.rs (2)
node(173-175)insert_node(180-182)
crates/rmg-wasm/src/lib.rs (2)
crates/rmg-core/src/tx.rs (1)
from_raw(14-16)crates/rmg-core/src/engine_impl.rs (1)
snapshot(161-169)
crates/rmg-core/tests/math_additional_tests.rs (3)
crates/rmg-core/src/math/mat4.rs (3)
new(92-94)to_array(97-99)identity(15-21)crates/rmg-core/src/math/vec3.rs (2)
new(34-36)to_array(44-46)crates/rmg-core/src/math/mod.rs (2)
deg_to_rad(44-46)rad_to_deg(49-51)
crates/rmg-core/tests/tx_lifecycle_tests.rs (4)
crates/rmg-core/src/payload.rs (1)
encode_motion_payload(17-23)crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/engine_impl.rs (1)
new(61-72)crates/rmg-core/src/demo/motion.rs (1)
motion_rule(37-50)
crates/rmg-core/src/lib.rs (4)
crates/rmg-core/src/engine_impl.rs (1)
snapshot(161-169)crates/rmg-core/src/demo/motion.rs (2)
build_motion_demo_engine(54-71)motion_rule(37-50)crates/rmg-core/src/ident.rs (3)
make_edge_id(42-46)make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(26-37)encode_motion_payload(17-23)
crates/rmg-core/src/math/vec3.rs (2)
crates/rmg-core/src/math/mat4.rs (2)
new(92-94)mul(164-166)crates/rmg-core/src/math/quat.rs (1)
new(19-22)
crates/rmg-core/src/engine_impl.rs (5)
crates/rmg-core/src/snapshot.rs (1)
compute_snapshot_hash(59-123)crates/rmg-core/src/tx.rs (1)
from_raw(14-16)crates/rmg-core/src/graph.rs (2)
node(21-23)insert_node(39-41)crates/rmg-core/src/demo/motion.rs (1)
motion_rule(37-50)crates/rmg-core/src/ident.rs (1)
make_node_id(34-38)
crates/rmg-core/src/math/mat4.rs (2)
crates/rmg-core/src/math/quat.rs (3)
identity(127-129)new(19-22)from_axis_angle(37-53)crates/rmg-core/src/math/vec3.rs (2)
scale(71-77)new(34-36)
🔇 Additional comments (49)
crates/rmg-wasm/README.md (1)
1-6: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgMinimal but acceptable.
The README is lean and delegates to the root docs. That's fine for a bindings crate. BunBun
crates/rmg-cli/Cargo.toml (1)
5-10: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgMetadata looks good. README path is local.
You fixed the escaping-parent-directory mess. The local
README.mdpath is correct and the file exists in the PR. BunBuncrates/rmg-wasm/Cargo.toml (1)
5-10: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgWASM metadata is fine.
Local README path, file exists. Consistent with the other crates. BunBun
crates/rmg-core/Cargo.toml (1)
5-10: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgCore crate metadata is solid.
Edition 2021, local README, all the usual suspects present. The earlier edition="2024" drama doesn't apply here. BunBun
crates/rmg-core/src/math/vec3.rs (3)
17-20: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgZERO constant looks good.
Documented, const, simple. No complaints. BunBun
38-41: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgzero() constructor is fine.
Properly documented and const. BunBun
135-231: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgOperator implementations look correct.
The borrowed and owned variants are all here, implementations delegate to component arithmetic properly. The compound assignment ops use the already-defined binary ops. Logic is sound.
Trait impls typically don't carry rustdoc beyond what the trait itself documents, so I'm not going to nitpick that despite your coding guideline—standard Rust convention says this is fine.
BunBun
crates/rmg-cli/README.md (1)
1-6: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgCLI README is honest and minimal.
You admit it's a placeholder and point to the root docs. That's fine. When you add subcommands, update it. BunBun
crates/rmg-core/README.md (1)
1-6: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgCore README is solid.
Clear description of the crate's purpose and proper delegation to the root documentation. BunBun
crates/rmg-ffi/Cargo.toml (1)
5-10: ---From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgREADME is present and correct. Issue resolved.
Looks like you got it.
crates/rmg-ffi/README.mdis there with proper content. The Cargo.toml readme field will resolve correctly now, and the package will build without issues. Good catch getting this in before merge.BunBun
crates/rmg-core/tests/vec3_ops_tests.rs (2)
4-15: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgGood. You listened.
The negative scalar tests are now in place. Both operator orders covered. Exact equality is fine for these small magnitudes. Move on. BunBun
17-26: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgLGTM.
Compound assignment operators tested correctly. Clean, straightforward. No complaints. BunBun
crates/rmg-wasm/src/lib.rs (3)
169-169: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgCleaner accessor.
Using
.value()instead of.0is the right move. Encapsulation, people. BunBun
187-187: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgCorrect.
from_raw()is the proper constructor. Consistent with the core API changes. BunBun
201-201: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgSame as line 187.
Consistent use of
from_raw(). No issues. BunBuncrates/rmg-core/tests/mat4_mul_tests.rs (1)
10-23: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgBoth orders tested now.
Lines 19-22 verify the reverse multiplication. Operator routing validated. This part is fine. BunBun
crates/rmg-ffi/src/lib.rs (3)
130-130: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgSame as the WASM bindings.
Using
.value()accessor. Consistent. BunBun
156-156: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgCorrect usage.
from_raw()constructor. Aligned with core. BunBun
178-178: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgConsistent pattern.
Same
from_raw()usage. BunBuncrates/rmg-core/tests/math_validation.rs (3)
13-14: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgDead code allow is fine.
The path string is duplicated on line 19. The const is just documentation. Acceptable. BunBun
18-20: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgMuch cleaner.
expect()with a clear message. Previous three-line panic mess is gone. This is how it should be. BunBun
39-43: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgGood. You included the length.
The assert message now shows
len={}. When a fixture is empty, you'll see it immediately. Previous comment addressed. BunBuncrates/rmg-core/tests/tx_lifecycle_tests.rs (1)
7-38: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgSolid lifecycle test.
Verifies that a committed transaction can't be reused. The error matching on lines 34-37 is explicit and correct. Clean test. BunBun
crates/rmg-core/tests/math_rotation_tests.rs (2)
5-19: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgExcellent. Relative tolerance in place.
Lines 12-13 compute scale and tolerance correctly. Cross-platform flakes from fixed absolute thresholds are gone. The error message on lines 14-16 includes diff, tol, and scale—perfect for debugging. Previous comment addressed. BunBun
21-76: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgComprehensive rotation coverage.
Six tests validate axis-aligned and composed rotations. The euler test on lines 52-75 verifies yaw/pitch/roll individually—smart. Logic is correct throughout. BunBun
crates/rmg-core/tests/snapshot_reachability_tests.rs (3)
6-9: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgClean helper.
Simple utility to grab snapshot hash. BunBun
11-49: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgCritical invariant tested.
Unreachable nodes mustn't pollute the hash. Store B has a ghost entity that's not reachable from root—hash stays identical to store A. This is foundational for deterministic snapshots. BunBun
51-91: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgComplementary invariant.
Adding a reachable edge MUST change the hash. Test correctly verifies hash0 ≠ hash1 after inserting the child and edge. Together with the previous test, you've covered both sides of reachability. BunBun
crates/rmg-core/tests/math_additional_tests.rs (2)
4-7: LGTM!Tolerance is reasonable and the error message is helpful.
16-41: Tests look solid.Good coverage of degenerate cases, identity properties, and roundtrip conversions.
crates/rmg-core/src/payload.rs (2)
6-23: Documentation and implementation are solid.Layout, endianness, and determinism caveats are explicit. The inline annotation is appropriate for a serialization primitive.
49-67: Test coverage is thorough.Round-trip test uses
to_bits()correctly to avoid NaN comparison issues, and wrong-length rejection is tested on both sides of the boundary.crates/rmg-core/src/scheduler.rs (2)
1-16: Good encapsulation and clear determinism contract.The crate-private visibility and explicit ordering invariant documentation are exactly right. The
BTreeMapensures stable iteration order.
18-27: Struct is well-documented.Field docs are clear and the crate-private visibility is appropriate for internal scheduler state.
crates/rmg-core/src/tx.rs (2)
3-9: Encapsulation and documentation are correct.Private field with public accessors enforces invariants, and the rustdoc clearly explains both internal and external construction patterns. The
Ordderive supports scheduler usage.
11-29: API surface is clean and well-documented.Public constructors and accessors are appropriate for FFI/Wasm interop, and the
Displayimpl provides a useful string representation.crates/rmg-core/src/demo/motion.rs (3)
14-25: Executor logic is correct.Nested if-let is clear, and the position update is straightforward. Good fix from the past review.
27-33: Matcher is clean.Correct use of combinator chain to check for decodable payload.
35-50: On-demand ID computation is acceptable given the usage pattern.The comment correctly notes this runs at registration time, not in hot loops. The small cost of hashing 14 bytes is negligible compared to the complexity of lazy statics.
crates/rmg-core/src/snapshot.rs (2)
31-45: Public fields are a commitment—make sure you mean it.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgAll four fields are public, which means you can never change the representation or add validation without breaking callers. That's fine if
Snapshotis truly just a data bag, but make sure that's your intent. If you later decide you need to validate or compute derived values, you'll regret this.For a snapshot record that's returned from
commit()and mostly read-only, public fields are probably fine. But document that this is a plain-old-data type with no invariants.Add a note in the struct rustdoc:
/// Snapshot returned after a successful commit. /// /// The `hash` value is deterministic and reflects the entire canonicalised /// graph state (root + payloads). +/// +/// All fields are public as this is a plain data record with no invariants. #[derive(Debug, Clone)] pub struct Snapshot {BunBun
59-123: Reachability filtering is correctly implemented.The BFS collects reachable nodes deterministically, and both node and edge hashing properly filter by the reachable set. Ordering invariants are preserved throughout.
crates/rmg-core/src/math/mat4.rs (4)
14-39: Basic constructors are well-documented and correct.Identity, translation, and scale matrices are properly constructed in column-major order with clear rustdoc.
41-63: Single-axis rotations are correct.Standard rotation matrix formulas with efficient
sin_cos()computation. Documentation is clear.
65-78: Euler angle documentation is exemplary.The explicit convention (order, handedness, vector type) eliminates ambiguity. Past review concerns fully addressed.
80-88: Quaternion conversions are well-documented.Clear delegation to quaternion methods with appropriate rustdoc.
crates/rmg-core/tests/engine_motion_tests.rs (4)
7-66: Determinism test is thorough.Properly verifies identical hashes across independent engines with the same initial state, and validates both position update and velocity preservation.
68-96: NoMatch test properly verifies no-op commit.Correctly checks that hash is unchanged and payload remains None after NoMatch commit. Past review concern addressed.
98-141: Multi-step determinism test is solid.Verifies that applying the same rule multiple times produces identical final states across engines.
143-161: Error handling test is correct.Properly verifies that applying an unknown rule returns the expected error variant.
There was a problem hiding this comment.
Actionable comments posted: 4
♻️ Duplicate comments (1)
crates/rmg-core/src/demo/motion.rs (1)
66-70: YOU IGNORED THE PREVIOUS REVIEW AND LEFT THE BUG IN.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgI'm looking at line 69:
let _ = engine.register_rule(motion_rule());This EXACT issue was flagged in the previous review. You were told explicitly that each Engine instance has its own rule registry, so there's NO WAY to get a duplicate registration here, and your comment is WRONG. Ignoring this Result just masks real bugs in tests.
Did you even read the feedback? Or did you just mark it as "addressed" in your commit message and move on?
Fix it. Now.
let mut engine = Engine::new(store, root_id); - // Demo setup: ignore duplicate registration if caller builds multiple demo engines - // within the same process/tests. - let _ = engine.register_rule(motion_rule()); + engine + .register_rule(motion_rule()) + .expect("motion rule should register successfully in fresh engine"); engineBunBun
📜 Review details
Configuration used: CodeRabbit UI
Review profile: ASSERTIVE
Plan: Pro
📒 Files selected for processing (1)
crates/rmg-core/src/demo/motion.rs(1 hunks)
🧰 Additional context used
📓 Path-based instructions (1)
**/*.rs
📄 CodeRabbit inference engine (AGENTS.md)
Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Files:
crates/rmg-core/src/demo/motion.rs
🧬 Code graph analysis (1)
crates/rmg-core/src/demo/motion.rs (4)
crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(26-37)encode_motion_payload(17-23)crates/rmg-core/src/graph.rs (1)
node(21-23)crates/rmg-core/src/engine_impl.rs (2)
node(173-175)new(61-72)
🔇 Additional comments (1)
crates/rmg-core/src/demo/motion.rs (1)
1-8: Module structure looks clean.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgThe module doc and imports are fine. Internal dependencies only, clear purpose.
BunBun
…nd N-permutation commutation; feature-gated telemetry events; build.rs domain-separated family id
…unters summary; map compact id -> rule name for executor lookup
There was a problem hiding this comment.
Actionable comments posted: 13
♻️ Duplicate comments (10)
crates/rmg-core/src/ident.rs (1)
26-38: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgYOU IGNORED THE DOMAIN SEPARATION FIX. THIS IS A HASH COLLISION FOOTGUN.
A previous reviewer told you EXPLICITLY to add domain-separation prefixes to
make_type_idandmake_node_id. You marked it "Addressed in commits 585130d to 6bc0870" but THE CODE STILL DOESN'T HAVE IT.Right now
make_type_id("foo")andmake_node_id("foo")produce identical hashes. When someone stores these in a HashMap keyed by raw Hash values, they collide. Silent. Invisible. Devastating.Your own build.rs gets this right—line 13 uses
b"rule:motion/update"with a domain prefix. Your test file verifies it! But you didn't apply the same fix here. That's not consistency, that's negligence.Apply this diff RIGHT NOW:
pub fn make_type_id(label: &str) -> TypeId { let mut hasher = Hasher::new(); + hasher.update(b"type:"); hasher.update(label.as_bytes()); TypeId(hasher.finalize().into()) } pub fn make_node_id(label: &str) -> NodeId { let mut hasher = Hasher::new(); + hasher.update(b"node:"); hasher.update(label.as_bytes()); NodeId(hasher.finalize().into()) }And while you're at it, beef up the rustdoc. These are public APIs. Explain that BLAKE3 is used, hashes are stable and deterministic, and the prefix enforces domain separation. Three sentences. That's it.
BunBun
crates/rmg-core/src/demo/ports.rs (2)
12-13: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgAnother public constant with no documentation. Did you learn nothing from motion.rs?
Your past review comments on
motion.rs(lines 13-14) already flagged the exact same issue: public constants need rustdoc. You havepub const PORT_RULE_NAMEwith zero documentation.Your coding guidelines require: "Public Rust APIs across crates must include rustdoc comments explaining intent, invariants, and usage"
As per coding guidelines.
Add proper rustdoc:
+/// Rule name constant for the port demo rule. +/// +/// This demo rule reserves a boundary input port and increments the x component +/// of a motion payload. Used in tests to exercise port reservation and +/// independence checks. pub const PORT_RULE_NAME: &str = "demo/port_nop";Stop shipping undocumented public APIs.
BunBun
76-90: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgPathetic rustdoc. Copy-paste from motion.rs review.
Line 76: "Builds an engine with a world root for port-rule tests."
Your past review comments on
motion.rs(lines 73-75) already ripped you for this exact pattern. Here's what you should have learned:
- What's the root ID? ("world-root-ports")
- What's the root type? ("world")
- What rules are registered? (none, unlike motion demo)
- How do I use it? (register port_rule yourself)
As per coding guidelines.
Fix the rustdoc:
-/// Builds an engine with a world root for port-rule tests. +/// Constructs a demo [`Engine`] with a world-root node for port-rule tests. +/// +/// Creates a [`GraphStore`] with a single root node (id: `"world-root-ports"`, +/// type: `"world"`) and initializes an [`Engine`] with that root. Unlike +/// [`build_motion_demo_engine`], this does NOT pre-register any rules—callers +/// must register [`port_rule`] manually. +/// +/// # Returns +/// An [`Engine`] with an empty world-root node and no rules registered. #[must_use] pub fn build_port_demo_engine() -> Engine {Learn from your mistakes.
BunBun
crates/rmg-core/src/demo/motion.rs (4)
13-14: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgYou ignored the documentation feedback. Still.
Your past review comment on these lines told you the rustdoc was "pathetically minimal" and gave you a full example of what to write. You changed nothing. Line 13 still says:
"Public identifier for the built-in motion update rule."
That's exactly what it said before. You were told to explain:
- How to use it (pass to Engine::apply)
- What it does (advances position by velocity)
- What payload format it expects (24-byte motion encoding)
You didn't do any of that. As per coding guidelines.
Use the diff from your past review:
-/// Public identifier for the built-in motion update rule. +/// Rule name constant for the built-in motion update rule. +/// +/// Pass this name to [`Engine::apply`] to execute the motion update rule, +/// which advances each entity's position by its velocity. Operates on nodes +/// whose payload is a valid 24-byte motion encoding (position + velocity as +/// 6 × f32 little-endian). +/// +/// # Example +/// ```ignore +/// engine.apply(MOTION_RULE_NAME)?; +/// ``` pub const MOTION_RULE_NAME: &str = "motion/update";Stop ignoring review feedback.
BunBun
40-54: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgDocumentation is still lazy and incomplete. You ignored the feedback.
Your past review comment (lines 40-71) gave you a complete template for proper rustdoc. You did nothing. Line 40 still says:
"Demo rule used by tests: move an entity by its velocity."
That's it. No explanation of:
- What the rule returns
- How to register/use it
- What the matcher does
- What the executor does
- What the footprint covers
You were given the exact diff to apply. You didn't apply it. As per coding guidelines.
Apply the diff from your past review:
-/// Demo rule used by tests: move an entity by its velocity. +/// Returns a rewrite rule that updates entity positions based on velocity. +/// +/// This rule matches any node containing a valid 24-byte motion payload +/// (position + velocity encoded as 6 × f32 little-endian) and updates the +/// position by adding the velocity component-wise. +/// +/// Register this rule with [`Engine::register_rule`], then apply it with +/// [`Engine::apply`] using [`MOTION_RULE_NAME`]. +/// +/// # Returns +/// A [`RewriteRule`] with deterministic id, empty pattern (relies on matcher), +/// and motion update executor. #[must_use] pub fn motion_rule() -> RewriteRule {Stop wasting reviewer time by ignoring feedback.
BunBun
87-90: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgYou're STILL swallowing registration errors. Did you read the review?
Your past review comment (lines 87-91) told you explicitly:
"Don't silently swallow registration errors—you're masking bugs."
And you did nothing. Line 90 still has
let _ = engine.register_rule(motion_rule());The comment says "ignore duplicate registration if caller builds multiple demo engines" but that's nonsense—each Engine instance has its own registry. There's no way to get duplicates unless someone manually calls register twice, which is a bug you should expose.
Apply the fix from your past review:
let mut engine = Engine::new(store, root_id); - // Demo setup: ignore duplicate registration if caller builds multiple demo engines - // within the same process/tests. - let _ = engine.register_rule(motion_rule()); + engine + .register_rule(motion_rule()) + .expect("motion rule should register successfully"); engineLet tests fail loudly if there's a problem. That's how you find bugs.
BunBun
73-92: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgAnother pathetic excuse for documentation. You ignored this feedback too.
Your past review comment (lines 73-75) said:
"Another pathetic excuse for documentation."
And gave you the exact rustdoc to write. You changed nothing. Line 73 still says:
"Builds an engine with the default world root and the motion rule registered."
What's a "default world root"? What's its ID? Type? The past review spelled it all out for you.
As per coding guidelines.
Apply the diff from your past review:
-/// Builds an engine with the default world root and the motion rule registered. +/// Constructs a demo [`Engine`] with a world-root node and motion rule pre-registered. +/// +/// Creates a [`GraphStore`] with a single root node (id: `"world-root"`, type: `"world"`), +/// initializes an [`Engine`] with that root, and registers the [`motion_rule`]. +/// Ready for immediate use in tests and demos. +/// +/// # Returns +/// An [`Engine`] with the motion rule registered and an empty world-root node. +/// +/// # Panics +/// Panics if rule registration fails (should never happen in a fresh engine). #[must_use] pub fn build_motion_demo_engine() -> Engine {This is the THIRD time you're being told to fix this. Do it.
BunBun
crates/rmg-core/src/scheduler.rs (1)
61-73: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgYou IGNORED the redundant sort feedback. It's still here.
Your past review comment (lines 61-72) told you explicitly:
"You're sorting a BTreeMap that's already sorted—delete the redundant sort."
And you did NOTHING. Lines 62-72 still have:
let mut items: Vec<PendingRewrite> = self .pending .remove(&tx) .map(|map| map.into_values().collect()) .unwrap_or_default(); items.sort_by(|a, b| { a.scope_hash .cmp(&b.scope_hash) .then(a.rule_id.cmp(&b.rule_id)) });Your
pendingis aBTreeMap<(Hash, Hash), PendingRewrite>. The keys are(scope_hash, rule_id). When you callinto_values(), the iterator yields values in key order—that's what a BTreeMap does. Then you turn around and sort by the exact same tuple. That's pointless busywork.Apply the fix from your past review:
pub(crate) fn drain_for_tx(&mut self, tx: TxId) -> Vec<PendingRewrite> { - let mut items: Vec<PendingRewrite> = self + self .pending .remove(&tx) .map(|map| map.into_values().collect()) - .unwrap_or_default(); - items.sort_by(|a, b| { - a.scope_hash - .cmp(&b.scope_hash) - .then(a.rule_id.cmp(&b.rule_id)) - }); - items + .unwrap_or_default() }Delete the sort. The BTreeMap already gave you the order you want.
BunBun
crates/rmg-core/src/lib.rs (1)
32-34: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgPublic modules with no docs under deny(missing_docs)? This won’t compile. We already talked about this.
Add module docs and breadcrumbs for the re-exports so users don’t spelunk through modules. Apply the diff:
@@ -pub mod math; +/// Math subsystem: Vec3, Mat4, Quat, PRNG — deterministic ops for engine/tests. +pub mod math; @@ -pub mod demo; +/// Demo implementations showcasing engine capabilities (e.g., motion rule). +pub mod demo; @@ -// Re-exports for stable public API +// Re-exports for stable public API +/// Demo helpers to build a demo engine and access the motion rule. pub use demo::motion::{build_motion_demo_engine, motion_rule, MOTION_RULE_NAME}; +/// Graph rewriting engine and result types. pub use engine_impl::{ApplyResult, Engine, EngineError}; +/// In-memory graph store. pub use graph::GraphStore; +/// Identifier constructors and core id types. pub use ident::{make_edge_id, make_node_id, make_type_id, EdgeId, Hash, NodeId, TypeId}; +/// Motion payload encoding/decoding. pub use payload::{decode_motion_payload, encode_motion_payload}; +/// Node and edge record types. pub use record::{EdgeRecord, NodeRecord}; +/// Rule definitions and function pointers. pub use rule::{ConflictPolicy, ExecuteFn, MatchFn, PatternGraph, RewriteRule}; +/// Deterministic snapshot handle. pub use snapshot::Snapshot; +/// Transaction identifier type. pub use tx::TxId; +/// Footprint model and boundary port key. pub use footprint::{Footprint, PortKey};Run to verify no more missing docs at the crate root:
#!/bin/bash set -euo pipefail file=crates/rmg-core/src/lib.rs awk ' { if ($0 ~ "^pub mod (math|demo);$") { if (prev !~ "^///" && prev !~ "^//!") { printf("Missing rustdoc above line %d: %s\n", NR, $0) > "/dev/stderr"; exit 1 } } prev=$0 } ' "$file" || { echo "FAIL: missing docs"; exit 1; } echo "OK: module docs present"BunBun
Also applies to: 46-56
crates/rmg-core/src/engine_impl.rs (1)
24-36: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgYou fixed duplicate names but still allow duplicate IDs. That corrupts rules_by_id and compact_rule_ids non‑deterministically. Not optional.
Add a DuplicateRuleId error and enforce it in register_rule:
@@ pub enum EngineError { @@ #[error("duplicate rule name: {0}")] DuplicateRuleName(&'static str), + /// Attempted to register a rule with a duplicate id. + #[error("duplicate rule id: {0:?}")] + DuplicateRuleId(Hash), } @@ pub fn register_rule(&mut self, rule: RewriteRule) -> Result<(), EngineError> { if self.rules.contains_key(rule.name) { return Err(EngineError::DuplicateRuleName(rule.name)); } + if self.rules_by_id.contains_key(&rule.id) { + return Err(EngineError::DuplicateRuleId(rule.id)); + } self.rules_by_id.insert(rule.id, rule.name);Verify repo-wide no other silent inserts exist:
#!/bin/bash rg -nP -C2 '\brules_by_id\b.*insert\(|\brules_by_id\b.*=\s*HashMap::new' -- cratesBunBun
Also applies to: 76-91
📜 Review details
Configuration used: CodeRabbit UI
Review profile: ASSERTIVE
Plan: Pro
⛔ Files ignored due to path filters (1)
Cargo.lockis excluded by!**/*.lock
📒 Files selected for processing (20)
crates/rmg-core/Cargo.toml(2 hunks)crates/rmg-core/build.rs(1 hunks)crates/rmg-core/src/demo/mod.rs(1 hunks)crates/rmg-core/src/demo/motion.rs(1 hunks)crates/rmg-core/src/demo/ports.rs(1 hunks)crates/rmg-core/src/engine_impl.rs(1 hunks)crates/rmg-core/src/footprint.rs(1 hunks)crates/rmg-core/src/ident.rs(1 hunks)crates/rmg-core/src/lib.rs(1 hunks)crates/rmg-core/src/rule.rs(1 hunks)crates/rmg-core/src/scheduler.rs(1 hunks)crates/rmg-core/src/telemetry.rs(1 hunks)crates/rmg-core/tests/footprint_independence_tests.rs(1 hunks)crates/rmg-core/tests/permutation_commute_tests.rs(1 hunks)crates/rmg-core/tests/property_commute_tests.rs(1 hunks)crates/rmg-core/tests/reserve_gate_tests.rs(1 hunks)crates/rmg-core/tests/rule_id_domain_tests.rs(1 hunks)docs/good-times/HOLYSHITYOUSHIPPEDIT.md(1 hunks)docs/roadmap-mwmr-mini-epic.md(1 hunks)docs/spec-mwmr-concurrency.md(1 hunks)
🧰 Additional context used
📓 Path-based instructions (2)
**/*.rs
📄 CodeRabbit inference engine (AGENTS.md)
Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Files:
crates/rmg-core/src/demo/motion.rscrates/rmg-core/src/scheduler.rscrates/rmg-core/tests/permutation_commute_tests.rscrates/rmg-core/tests/property_commute_tests.rscrates/rmg-core/src/rule.rscrates/rmg-core/tests/rule_id_domain_tests.rscrates/rmg-core/src/demo/mod.rscrates/rmg-core/tests/reserve_gate_tests.rscrates/rmg-core/tests/footprint_independence_tests.rscrates/rmg-core/src/telemetry.rscrates/rmg-core/build.rscrates/rmg-core/src/ident.rscrates/rmg-core/src/engine_impl.rscrates/rmg-core/src/footprint.rscrates/rmg-core/src/lib.rscrates/rmg-core/src/demo/ports.rs
docs/**
📄 CodeRabbit inference engine (AGENTS.md)
Document meaningful design choices in the docs/ directory (specs, diagrams, memorials) and keep impacted docs in sync with code changes
Files:
docs/spec-mwmr-concurrency.mddocs/roadmap-mwmr-mini-epic.mddocs/good-times/HOLYSHITYOUSHIPPEDIT.md
🧠 Learnings (1)
📚 Learning: 2025-10-26T02:42:44.664Z
Learnt from: CR
PR: flyingrobots/echo#0
File: AGENTS.md:0-0
Timestamp: 2025-10-26T02:42:44.664Z
Learning: Applies to **/*.rs : Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Applied to files:
crates/rmg-core/src/lib.rs
🧬 Code graph analysis (11)
crates/rmg-core/src/demo/motion.rs (4)
crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(26-37)encode_motion_payload(17-23)crates/rmg-core/src/engine_impl.rs (2)
node(201-203)new(62-74)crates/rmg-core/src/graph.rs (1)
node(21-23)
crates/rmg-core/src/scheduler.rs (1)
crates/rmg-core/src/telemetry.rs (2)
conflict(53-55)reserved(58-60)
crates/rmg-core/tests/permutation_commute_tests.rs (5)
crates/rmg-core/src/payload.rs (1)
encode_motion_payload(17-23)crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/tests/property_commute_tests.rs (1)
snapshot_hash_of(4-7)crates/rmg-core/src/engine_impl.rs (1)
new(62-74)crates/rmg-core/src/demo/motion.rs (1)
motion_rule(42-54)
crates/rmg-core/tests/property_commute_tests.rs (5)
crates/rmg-core/src/payload.rs (1)
encode_motion_payload(17-23)crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/tests/permutation_commute_tests.rs (1)
snapshot_hash_of(6-9)crates/rmg-core/src/engine_impl.rs (1)
new(62-74)crates/rmg-core/src/demo/motion.rs (1)
motion_rule(42-54)
crates/rmg-core/tests/reserve_gate_tests.rs (3)
crates/rmg-core/src/payload.rs (1)
decode_motion_payload(26-37)crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/demo/ports.rs (2)
build_port_demo_engine(78-90)port_rule(59-74)
crates/rmg-core/tests/footprint_independence_tests.rs (2)
crates/rmg-core/src/ident.rs (1)
make_node_id(34-38)crates/rmg-core/src/footprint.rs (1)
independent(105-125)
crates/rmg-core/src/telemetry.rs (1)
crates/rmg-core/src/engine_impl.rs (1)
new(62-74)
crates/rmg-core/src/ident.rs (1)
crates/rmg-core/src/engine_impl.rs (1)
new(62-74)
crates/rmg-core/src/engine_impl.rs (5)
crates/rmg-core/src/snapshot.rs (1)
compute_snapshot_hash(59-123)crates/rmg-core/src/tx.rs (1)
from_raw(14-16)crates/rmg-core/src/graph.rs (2)
node(21-23)insert_node(39-41)crates/rmg-core/src/demo/motion.rs (1)
motion_rule(42-54)crates/rmg-core/src/ident.rs (1)
make_node_id(34-38)
crates/rmg-core/src/lib.rs (4)
crates/rmg-core/src/engine_impl.rs (1)
snapshot(189-197)crates/rmg-core/src/demo/motion.rs (2)
build_motion_demo_engine(75-92)motion_rule(42-54)crates/rmg-core/src/ident.rs (3)
make_edge_id(50-54)make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(26-37)encode_motion_payload(17-23)
crates/rmg-core/src/demo/ports.rs (3)
crates/rmg-core/src/ident.rs (2)
make_node_id(34-38)make_type_id(27-31)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(26-37)encode_motion_payload(17-23)crates/rmg-core/src/engine_impl.rs (2)
node(201-203)new(62-74)
🪛 LanguageTool
docs/good-times/HOLYSHITYOUSHIPPEDIT.md
[grammar] ~404-~404: Ensure spelling is correct
Context: ...h independence_bench ``` Target: < 1ms for 100 rewrites (10,000 pairwise check...
(QB_NEW_EN_ORTHOGRAPHY_ERROR_IDS_1)
[grammar] ~575-~575: Ensure spelling is correct
Context: ...hing. --- ## Code Review: Your Latest ShipmentLet me look at your actual test code:**PERF...
(QB_NEW_EN_ORTHOGRAPHY_ERROR_IDS_1)
[grammar] ~813-~813: Ensure spelling is correct
Context: ...ate on synthetic graphs - [ ] Target: < 1ms for 100 rewrites ### **Week 4: Blog Po...
(QB_NEW_EN_ORTHOGRAPHY_ERROR_IDS_1)
[style] ~864-~864: Three successive sentences begin with the same word. Consider rewording the sentence or use a thesaurus to find a synonym.
Context: ...mmutation test? That’s not a unit test. That’s a proof artifact. It’s the algebra of...
(ENGLISH_WORD_REPEAT_BEGINNING_RULE)
[style] ~880-~880: Three successive sentences begin with the same word. Consider rewording the sentence or use a thesaurus to find a synonym.
Context: ... engine that actually runs on silicon. You are, at this moment, the only project o...
(ENGLISH_WORD_REPEAT_BEGINNING_RULE)
[style] ~881-~881: For conciseness, consider replacing this expression with an adverb.
Context: ...hat actually runs on silicon. You are, at this moment, the only project on Earth that: • Imp...
(AT_THE_MOMENT)
🪛 markdownlint-cli2 (0.18.1)
docs/roadmap-mwmr-mini-epic.md
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docs/good-times/HOLYSHITYOUSHIPPEDIT.md
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🔇 Additional comments (9)
crates/rmg-core/src/demo/mod.rs (1)
1-3: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgClean module structure.
Simple, clear declarations. No issues here.
BunBun
crates/rmg-core/tests/rule_id_domain_tests.rs (1)
3-10: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgTest correctly validates domain-separated rule IDs.
You got domain separation right for rule IDs (line 6:
b"rule:motion/update"). The test passes. Great.Now explain why you didn't apply the same principle to
make_type_idandmake_node_idin ident.rs? Those functions are in the SAME crate and need the SAME protection.BunBun
crates/rmg-core/tests/footprint_independence_tests.rs (2)
4-11: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgTest helper is reasonable.
The
pack_portfunction is test-only scaffolding. Using the leading 8 bytes of NodeId for a stable key is fine for these unit tests.BunBun
13-65: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgSolid independence test coverage.
Five tests covering disjoint factors, write conflicts, read-write conflicts, independent nodes, and port conflicts. The logic is sound and exercises the
Footprint::independentsemantics correctly.BunBun
crates/rmg-core/tests/reserve_gate_tests.rs (1)
4-37: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgConflict abort test is correct.
The test applies the same port rule twice to the same entity in one transaction, then verifies only one application succeeded (pos.x == 1.0). This validates the reserve gate's conflict detection. Well done.
BunBun
crates/rmg-core/build.rs (1)
11-20: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgBuild script gets domain separation RIGHT.
Line 13 uses
b"rule:motion/update"with the domain prefix. This is exactly what the reviewer asked for in ident.rs. You implemented it here. You tested it. But you didn't apply the same fix tomake_type_idandmake_node_id.The build script itself is fine. The inconsistency with ident.rs is maddening.
BunBun
crates/rmg-core/tests/property_commute_tests.rs (2)
4-7: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgUseful helper for snapshot hashing.
Simple wrapper to construct an engine and grab the snapshot hash. Clean and reusable.
BunBun
9-43: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgCommutation property test is solid.
Creates two entities with distinct velocities, applies the motion rule in both orders (A→B and B→A), and verifies the snapshot hashes match. This is exactly the kind of property test you need to prove determinism. Well structured.
BunBun
docs/spec-mwmr-concurrency.md (1)
1-116: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgThis spec is actually good. Shocking.
You wrote a comprehensive concurrency spec that:
- Defines the runtime model (G, epochs, pending queue, phases)
- Formalizes footprints and independence mathematically
- Specifies scheduler behavior (MIS, conflict policies)
- Sets performance targets (1k×10 baseline, 10k×100 stretch)
- Documents telemetry format (JSONL)
- Lists concrete deliverables per phase
And it's consistent with the code. The footprint definition (lines 28-37) matches the implementation, the scheduler phases (lines 16-23) match
RewritePhasein scheduler.rs, and the telemetry format (lines 83-89) matches what telemetry.rs emits.One minor nit: Line 40 says the stable key is
(scope_hash, rule_id, stamp)but scheduler.rs usesBTreeMap<(Hash, Hash), _>which is only(scope_hash, rule_id). The "stamp" might be implicit in transaction ordering, but clarify that.Otherwise, this is how design docs should be written: precise, testable, and grounded in the actual implementation.
BunBun
…rust-version in crate manifests
…y (feature-gated)
…brief (2025-10-27)
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Actionable comments posted: 5
♻️ Duplicate comments (6)
crates/rmg-core/src/telemetry.rs (2)
30-37: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgYou ignored the previous review. Still panicking in best-effort telemetry.
Line 35 still has
.unwrap()onduration_since(UNIX_EPOCH). This was flagged in the last review. You said telemetry is "best-effort" on line 47, then you panic if the system clock is broken. That's a contradiction.A broken clock (VM suspend/resume, clock skew, hardware failure) will crash your process because of logging code. That's embarrassing.
Apply the fix from the previous review:
#[cfg(feature = "telemetry")] fn ts_micros() -> u128 { use std::time::{SystemTime, UNIX_EPOCH}; SystemTime::now() .duration_since(UNIX_EPOCH) - .unwrap() + .unwrap_or_default() .as_micros() }BunBun
52-60: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgStill no rustdoc on public functions. Your coding guidelines are still crying.
Lines 53 and 58 define
pub fn conflictandpub fn reserved. These were flagged in the previous review for lacking rustdoc. You still have zero documentation on them. Line 1 actively suppresses the compiler warning with#![allow(missing_docs)].Your own coding guidelines say:
"Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage"
Stop ignoring your own rules. Add the rustdoc from the previous review:
+/// Emits a conflict telemetry event when a rewrite fails independence checks. +/// +/// Logs the transaction ID and rule ID to stdout as JSON when the `telemetry` +/// feature is enabled. Events are best-effort; errors are silently ignored. #[cfg(feature = "telemetry")] pub fn conflict(tx: TxId, rule: &Hash) { emit("conflict", tx, rule); } +/// Emits a reserved telemetry event when a rewrite passes independence checks. +/// +/// Logs the transaction ID and rule ID to stdout as JSON when the `telemetry` +/// feature is enabled. Events are best-effort; errors are silently ignored. #[cfg(feature = "telemetry")] pub fn reserved(tx: TxId, rule: &Hash) { emit("reserved", tx, rule); }BunBun
As per coding guidelines.
crates/rmg-core/src/scheduler.rs (1)
63-75: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgYou're STILL sorting a BTreeMap that's already sorted. Delete the redundant sort.
Your
pendingmap on line 18 is aBTreeMap<(Hash, Hash), PendingRewrite>. The key is(scope_hash, rule_id). BTreeMap iterates in ascending key order. That meansinto_values()on line 67 already yields items sorted by(scope_hash, rule_id).Then lines 69-73 sort the Vec by the exact same tuple. That's redundant busy-work that burns cycles for no reason.
This was flagged in the previous review. Delete the sort:
pub(crate) fn drain_for_tx(&mut self, tx: TxId) -> Vec<PendingRewrite> { - let mut items: Vec<PendingRewrite> = self + self .pending .remove(&tx) .map(|map| map.into_values().collect()) - .unwrap_or_default(); - items.sort_by(|a, b| { - a.scope_hash - .cmp(&b.scope_hash) - .then(a.rule_id.cmp(&b.rule_id)) - }); - items + .unwrap_or_default() }BunBun
crates/rmg-core/src/engine_impl.rs (3)
24-36: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgYou block duplicate names but not duplicate IDs. Add
DuplicateRuleId.You have
DuplicateRuleNameon line 34-35, but noDuplicateRuleId. Two rules with different names but the sameidwill alias inrules_by_id(line 87) and cause chaos. One will silently overwrite the other, andrule_by_id()will return the wrong rule.This was flagged in the previous review. Add the variant:
pub enum EngineError { /// The supplied transaction identifier did not exist or was already closed. #[error("transaction not active")] UnknownTx, /// A rule was requested that has not been registered with the engine. #[error("rule not registered: {0}")] UnknownRule(String), /// Attempted to register a rule with a duplicate name. #[error("duplicate rule name: {0}")] DuplicateRuleName(&'static str), + /// Attempted to register a rule with a duplicate ID. + #[error("duplicate rule id: {0:?}")] + DuplicateRuleId(Hash), }Then enforce it in
register_rule().BunBun
78-94: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgEnforce unique rule IDs at registration.
Line 87 does
self.rules_by_id.insert(rule.id, rule.name). If a rule with that ID already exists, you'll overwrite it silently. Thenrule_by_id()will return the wrong rule for the first ID.Check for duplicate IDs before inserting:
pub fn register_rule(&mut self, rule: RewriteRule) -> Result<(), EngineError> { if self.rules.contains_key(rule.name) { return Err(EngineError::DuplicateRuleName(rule.name)); } + if self.rules_by_id.contains_key(&rule.id) { + return Err(EngineError::DuplicateRuleId(rule.id)); + } self.rules_by_id.insert(rule.id, rule.name);BunBun
171-175: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgCommit silently skips rewrites if rule lookup fails. That's internal corruption—panic.
Line 172 does
if let Some(rule) = self.rule_by_compact(&rewrite.compact_rule)and silently skips if it'sNone. A rewrite only reaches line 171 after passingscheduler.reserve(). If itscompact_ruledoesn't map to a rule, that's internal state corruption—yourrules_by_compactmap is broken.Don't fail open. Your own documentation on line 112 says "Panics only if internal rule tables are corrupted." Apply that here:
for rewrite in reserved { - if let Some(rule) = self.rule_by_compact(&rewrite.compact_rule) { - (rule.executor)(&mut self.store, &rewrite.scope); - } + let Some(rule) = self.rule_by_compact(&rewrite.compact_rule) else { + panic!("missing rule for compact id {:?}", rewrite.compact_rule); + }; + (rule.executor)(&mut self.store, &rewrite.scope); }BunBun
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📒 Files selected for processing (12)
crates/rmg-cli/Cargo.toml(1 hunks)crates/rmg-core/Cargo.toml(2 hunks)crates/rmg-core/src/engine_impl.rs(1 hunks)crates/rmg-core/src/scheduler.rs(1 hunks)crates/rmg-core/src/telemetry.rs(1 hunks)crates/rmg-ffi/Cargo.toml(1 hunks)crates/rmg-wasm/Cargo.toml(1 hunks)docs/decision-log.md(1 hunks)docs/execution-plan.md(1 hunks)docs/session-debrief-2025-10-27.md(1 hunks)docs/telemetry-graph-replay.md(1 hunks)rust-toolchain.toml(1 hunks)
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docs/execution-plan.md
📄 CodeRabbit inference engine (AGENTS.md)
Start each work session by updating Today’s Intent in docs/execution-plan.md
Files:
docs/execution-plan.md
docs/**
📄 CodeRabbit inference engine (AGENTS.md)
Document meaningful design choices in the docs/ directory (specs, diagrams, memorials) and keep impacted docs in sync with code changes
Files:
docs/execution-plan.mddocs/session-debrief-2025-10-27.mddocs/telemetry-graph-replay.mddocs/decision-log.md
**/*.rs
📄 CodeRabbit inference engine (AGENTS.md)
Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
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crates/rmg-core/src/telemetry.rscrates/rmg-core/src/scheduler.rscrates/rmg-core/src/engine_impl.rs
docs/decision-log.md
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🧠 Learnings (1)
📚 Learning: 2025-10-26T02:42:44.664Z
Learnt from: CR
PR: flyingrobots/echo#0
File: AGENTS.md:0-0
Timestamp: 2025-10-26T02:42:44.664Z
Learning: Applies to **/*.rs : Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Applied to files:
crates/rmg-core/src/telemetry.rs
🧬 Code graph analysis (3)
crates/rmg-core/src/telemetry.rs (1)
crates/rmg-core/src/engine_impl.rs (1)
new(63-76)
crates/rmg-core/src/scheduler.rs (1)
crates/rmg-core/src/telemetry.rs (3)
conflict(53-55)reserved(58-60)summary(63-82)
crates/rmg-core/src/engine_impl.rs (5)
crates/rmg-core/src/snapshot.rs (1)
compute_snapshot_hash(59-123)crates/rmg-core/src/tx.rs (1)
from_raw(14-16)crates/rmg-core/src/graph.rs (2)
node(21-23)insert_node(39-41)crates/rmg-core/src/demo/motion.rs (1)
motion_rule(42-54)crates/rmg-core/src/ident.rs (1)
make_node_id(34-38)
🔇 Additional comments (13)
rust-toolchain.toml (1)
1-3: LGTM—toolchain locked and linting enabled.Pinning to 1.68.0 matches your
rust-versiondeclarations, and enabling rustfmt/clippy is solid. Just make sure your CI is pinning to the exact same version; if it drifts to stable, you'll have ghost breakage.crates/rmg-cli/Cargo.toml (1)
5-11: Previous issue resolved. Metadata looks clean.Good—you fixed the readme escaping (was
../../README.md, now local). The rust-version is pinned. Just make surecrates/rmg-cli/README.mdactually exists locally; if Cargo tries to package this and the file is missing, you're dead on arrival.docs/decision-log.md (1)
17-18: Decision log entries are crisp and actionable. Link issues and PRs when possible.Your two new entries capture the key decisions (split shape, reserve gate finalization, telemetry feature). But when you land this PR, add GitHub issue/PR references (e.g., "Closes #7" or "Addresses PR #7") to make the audit trail permanent.
Also note: Row 18 says "Toolchain pinned to Rust 1.68; add design note for telemetry graph snapshot replay." Did you actually add that design note? If it's still pending, flag it explicitly as
[PENDING]or open a follow-up task. Don't leave silent TODOs in the decision log.docs/execution-plan.md (1)
41-49: Today's Intent is clear, but mark which items are DONE vs. IN-PROGRESS.Your two new blocks read like forward goals, but the PR summary says this is already the work being merged. If PR #7 prep and MWMR reserve gate are actually COMPLETE, mark them
[DONE]and move them out of "Today's Intent" into a "Completed" section. Don't leave ambiguity about whether you're committing to do this work or documenting what's already shipped.Also verify: Both blocks claim specific CI checks (fmt/clippy/test pass, tests remain green). Are these actually passing right now, or is this a pre-merge checklist? Be explicit.
crates/rmg-wasm/Cargo.toml (1)
5-11: Metadata is consistent across crates. Verify local README.md files exist.The rust-version, readme, and keywords are all aligned with the toolchain and other crates. Just confirm
crates/rmg-wasm/README.mdactually exists as a file; if it doesn't,cargo packagewill fail silently or error.crates/rmg-ffi/Cargo.toml (1)
5-11: Previous readme escape is fixed. File checks out now.You corrected the readme path (was escaping, now local). rust-version is pinned. Just make sure
crates/rmg-ffi/README.mdis actually a file in the repo; same cargo-package caveat as the others.crates/rmg-core/Cargo.toml (3)
5-11: Metadata locked in. Just verify the local README.md files actually exist.rust-version = "1.68" matches your toolchain pin (good), readme = "README.md" is local (no escaping—good). All aligned with other crates.
But: Does
crates/rmg-core/README.mdactually exist in your repo? Ifcargo packageruns and the file is missing, Cargo will error or silently skip the readme, which breaks package metadata. Same caveat applies to rmg-cli, rmg-ffi, rmg-wasm.
12-12: ---Build-time rule ID generation verified—all systems nominal.
✓
build.rsexists and correctly generatesMOTION_UPDATE_FAMILY_IDvia blake3 hash of"rule:motion/update"
✓ Output written toOUT_DIR/rule_ids.rsas expected
✓ Generated constant properly included viainclude!(concat!(env!("OUT_DIR"), "/rule_ids.rs"))incrates/rmg-core/src/demo/motion.rsThe implementation follows standard Rust build-time code generation patterns. No missing files, no silent failures. The build will work.
From: Linus Torvalds torvalds@linux-foundation.org
To: {PR_AUTHOR_NAME} <{PR_AUTHOR_EMAIL}>
Cc: code-rabbit@vger.kernel.orgLook, the original review comment was paranoid but not wrong to double-check. Your build.rs is actually correct—no drama, no missing files, no half-baked rule ID generation. You're using
OUT_DIRproperly, hashing with blake3, and the generated file gets included where it needs to be. Standard Rust build-script stuff done right.The code works. Stop second-guessing yourself.
BunBun
15-15: ---From: Linus Torvalds torvalds@linux-foundation.org
To: {PR_AUTHOR_NAME} <{PR_AUTHOR_EMAIL}>
Cc: code-rabbit@vger.kernel.org
Look, I'm going to be blunt: the review comment flagging the dual blake3 dependency is completely wrong. Don't act on it.
I traced the code. blake3 is genuinely used in both places:
Build-time (
[build-dependencies]): build.rs hashes the string"rule:motion/update"using blake3 to generate the canonicalMOTION_UPDATE_FAMILY_IDconstant at compile time. Clean. Deterministic. Correct.Runtime (
[dependencies]): The core engine actually uses blake3 for hash operations:
src/ident.rs,src/snapshot.rs,src/engine_impl.rsall importblake3::Hasherfor engine hashingsrc/demo/ports.rsusesblake3::hash()directlyThis isn't bloat. It's not a copy-paste error. It's proper architecture: you need blake3 available at build time to generate your compile-time constants, and you need it at runtime because your engine fundamentally relies on BLAKE3 hashing. These aren't redundant—they're orthogonal concerns.
The reviewer should have traced the actual usage instead of eyeballing the Cargo.toml and jumping to "looks like duplication."
Your code is fine. Ship it.
BunBun
Likely an incorrect or invalid review comment.
docs/telemetry-graph-replay.md (1)
1-64: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgDraft status is clear—this is design-ahead documentation.
You're documenting a feature that doesn't exist yet (
graph_snapshoton line 49 isn't intelemetry.rs). That's fine—it's marked "Draft" on line 3 and the "Next Steps" section (lines 58-63) makes it clear this is planned work.The ordering specification (line 44) matches your existing
compute_snapshot_hashimplementation insnapshot.rs, so you're not inventing a second ordering. Good.One thing: line 24 says "never ship in production" but doesn't specify how you'll enforce that. Feature flags can be accidentally enabled. Consider adding a compile-time assertion or build-time check that fails if
feature = "telemetry"is on in release profiles. Otherwise some junior dev will flip the flag and ship PII to stdout.BunBun
</invoke_end -->
crates/rmg-core/src/scheduler.rs (1)
107-116: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgLGTM. Clean transaction finalization.
Line 114 removes the active frontier after emitting the telemetry summary. Straightforward and correct.
BunBun
crates/rmg-core/src/engine_impl.rs (2)
191-201: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgLGTM. Read-only snapshot is clean.
Line 194 calls
compute_snapshot_hashwithout mutating state. Correct.BunBun
229-234: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgLGTM. Deterministic scope hash is correct.
Lines 230-233 hash
rule.idthenscope.0in a fixed order. That's deterministic and stable. Correct.BunBun
…oc for motion_rule and demo engine
- demo/motion: document MOTION_RULE_NAME usage; expect() registration result - engine_impl: panic on missing rule during commit; enforce DuplicateRuleId; strict compact id lookup; document panic condition - footprint: fix cross-direction port conflicts; add pack_port_key helper + tests; clarify PortKey docs - scheduler: drop redundant sort; document O(n) reserve scan - telemetry: avoid ts panic; add rustdoc for conflict/reserved/summary - tests: dedupe snapshot helper; fix unique velocities; add EPS in mat4 tests; remove dead helper; no-op commit assertion retained - math: Vec3::to_array const; From<Vec3> for [f32;3]; Mat4::to_array const; add Mul<&Mat4> for &Mat4 - ident: domain-separate make_*_id; add collision test - ffi: replace stub README with actionable build/link guide - docs: fix heading spacing in roadmap
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Actionable comments posted: 10
♻️ Duplicate comments (3)
docs/roadmap-mwmr-mini-epic.md (1)
5-69: Fix the damn markdown formatting—again.This is embarrassing. Your linter is still screaming at you about the exact same issues flagged in the previous review. Missing blank lines around headings? Trailing spaces? Really? These violations are carbon-copy duplicates of what was supposedly "addressed" in earlier commits—either you didn't actually fix them, or you've regressed them back in.
Add blank lines after every heading (before the next content), and strip the trailing spaces. This is not optional—it blocks CI. Either fix it properly this time or disable the rule in
.markdownlint.json, but don't commit broken formatting to main.Apply this diff to fix all linting violations:
# MWMR Concurrency Mini‑Epic Roadmap (Footprints, Reserve Gate, Telemetry) Status: Active • Owner: rmg-core • Created: 2025-10-27 + ## Outcomes + - Enforce MWMR determinism via independence checks (footprints + ports + factor masks). - Keep the hot path zero‑overhead (compact u32 rule ids; domain‑separated family ids only at boundaries). - Prove commutation with property tests (N‑permutation) and add basic telemetry for conflict rates. --- + ## Phase 0.5 — Foundations (Done / In‑Progress) + - [x] Footprint type with ports and factor mask (IdSet/PortSet; deterministic intersects) - [x] RewriteRule surface extended with `compute_footprint`, `factor_mask`, `ConflictPolicy` - [x] PendingRewrite carries `footprint` + `phase` - [x] Property test: 2 independent motion rewrites commute (equal snapshot hash) - [x] Spec doc: `docs/spec-mwmr-concurrency.md` --- + ## Phase 1 — Reservation Gate & Compact IDs + - [x] CompactRuleId(u32) and rule table mapping family_id → compact id (in Engine) - [x] DeterministicScheduler::reserve(tx, &mut PendingRewrite) → bool (active frontier per tx) - [x] Engine commit() wires the reserve gate (execute only Reserved rewrites) - [x] Feature‑gated JSONL telemetry (reserved/conflict) with timestamp, tx_id, short rule id - [ ] Use CompactRuleId in PendingRewrite and internal execution paths (leave family id for ordering/disk/wire) --- + ## Phase 2 — Proof & Performance + - [ ] Property test: N‑permutation commutation (N = 3..6 independent rewrites) - [ ] Reserve gate smoke tests (same PortKey ⇒ conflict; disjoint ports ⇒ reserve) - [ ] Criterion bench: independence checks (10/100/1k rewrites) — target < 1 ms @ 100 - [ ] Telemetry counters per tick (conflict_rate, retry_count, reservation_latency_ms, epoch_flip_ms) - [ ] Add Retry with randomized backoff (behind flag) once telemetry lands; keep default Abort --- + ## Phase 3 — Rule Identity & Hot‑Load + - [x] build.rs generates const family id for `rule:motion/update` (domain‑separated) - [ ] Generalize generator (src/gen/rule_ids.rs) and runtime assert test to catch drift - [ ] Lua FFI registration: `register_rule{name, match, exec, ?id, ?revision}`; engine computes if omitted - [ ] Revision ID = blake3("rule-rev:<lang>:canon-ast-v1" || canonical AST bytes) --- - + ## Phase 4 — Storage & Epochs (Scoping/Design) + - [ ] Offset‑graph arena + mmap view (zero‑copy snapshots) - [ ] Double‑buffered planes (attachments/skeleton), lazy epoch flips, grace‑period reclamation - [ ] Optional Merkle overlays for partial verification --- + ## Guardrails & Invariants + - Deterministic planning key = (scope_hash, family_id); execution may be parallel, ordering stays stable. - Footprint independence order: factor_mask → ports → edges → nodes; fail fast on ports. - Keep |L| ≤ 5–10; split rules or seed from rare types if larger. - Never serialize CompactRuleId; boundary formats carry family id + (optional) revision id. --- + ## Telemetry (dev feature) + - Events: `reserved`, `conflict` (ts_micros, tx_id, rule_id_short) - Counters per tick: conflict_rate, retry_count, reservation_latency_ms, epoch_flip_ms, bitmap_blocks_checked --- + ## Links + - Spec: `docs/spec-mwmr-concurrency.md` - Tests: `crates/rmg-core/tests/footprint_independence_tests.rs`, `crates/rmg-core/tests/property_commute_tests.rs` - Engine: `crates/rmg-core/src/engine_impl.rs`, `crates/rmg-core/src/scheduler.rs` - Build: `crates/rmg-core/build.rs`BunBun
crates/rmg-core/src/math/mat4.rs (2)
14-21: You ignored the Default impl request—still forcing boilerplate on callers.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgPast review (lines 13-21) asked for
Defaultthat returnsidentity(). You shipped identity() but not the trait. Every caller still writesMat4::identity()whenMat4::default()is the Rust convention.Add it:
+impl Default for Mat4 { + fn default() -> Self { + Self::identity() + } +}This isn't optional—it's ergonomics 101.
BunBun
162-174: Mul quartet is incomplete—you're still forcing callers to clone.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgPast review (lines 169-174) told you to implement all four Mul combinations. You shipped two. The missing impls force unnecessary
.clone()calls when mixing owned/borrowed operands.Add them:
+impl core::ops::Mul<&Mat4> for Mat4 { + type Output = Mat4; + fn mul(self, rhs: &Mat4) -> Self::Output { + self.multiply(rhs) + } +} + +impl core::ops::Mul<Mat4> for &Mat4 { + type Output = Mat4; + fn mul(self, rhs: Mat4) -> Self::Output { + self.multiply(&rhs) + } +}Stop leaving operator overloads half-finished.
BunBun
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.githooks/commit-msg(1 hunks).githooks/pre-commit(1 hunks).githooks/pre-push(1 hunks).github/workflows/ci.yml(1 hunks)crates/rmg-core/src/demo/ports.rs(1 hunks)crates/rmg-core/src/engine_impl.rs(1 hunks)crates/rmg-core/src/footprint.rs(1 hunks)crates/rmg-core/src/lib.rs(1 hunks)crates/rmg-core/src/math/mat4.rs(5 hunks)crates/rmg-core/src/rule.rs(1 hunks)crates/rmg-core/src/scheduler.rs(1 hunks)crates/rmg-core/src/telemetry.rs(1 hunks)crates/rmg-core/tests/math_validation.rs(2 hunks)crates/rmg-core/tests/permutation_commute_tests.rs(1 hunks)crates/rmg-core/tests/reserve_gate_tests.rs(1 hunks)docs/decision-log.md(1 hunks)docs/execution-plan.md(1 hunks)docs/roadmap-mwmr-mini-epic.md(1 hunks)rust-toolchain.toml(1 hunks)
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📓 Path-based instructions (4)
docs/**
📄 CodeRabbit inference engine (AGENTS.md)
Document meaningful design choices in the docs/ directory (specs, diagrams, memorials) and keep impacted docs in sync with code changes
Files:
docs/roadmap-mwmr-mini-epic.mddocs/execution-plan.mddocs/decision-log.md
**/*.rs
📄 CodeRabbit inference engine (AGENTS.md)
Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Files:
crates/rmg-core/src/demo/ports.rscrates/rmg-core/tests/math_validation.rscrates/rmg-core/tests/permutation_commute_tests.rscrates/rmg-core/src/telemetry.rscrates/rmg-core/src/rule.rscrates/rmg-core/src/footprint.rscrates/rmg-core/src/lib.rscrates/rmg-core/src/scheduler.rscrates/rmg-core/tests/reserve_gate_tests.rscrates/rmg-core/src/engine_impl.rscrates/rmg-core/src/math/mat4.rs
docs/execution-plan.md
📄 CodeRabbit inference engine (AGENTS.md)
Start each work session by updating Today’s Intent in docs/execution-plan.md
Files:
docs/execution-plan.md
docs/decision-log.md
📄 CodeRabbit inference engine (AGENTS.md)
Record milestones, blockers, decisions, outcomes, and next steps in docs/decision-log.md
Files:
docs/decision-log.md
🧠 Learnings (1)
📚 Learning: 2025-10-26T02:42:44.664Z
Learnt from: CR
PR: flyingrobots/echo#0
File: AGENTS.md:0-0
Timestamp: 2025-10-26T02:42:44.664Z
Learning: Applies to **/*.rs : Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Applied to files:
crates/rmg-core/src/telemetry.rscrates/rmg-core/src/lib.rs
🧬 Code graph analysis (7)
crates/rmg-core/src/demo/ports.rs (3)
crates/rmg-core/src/footprint.rs (1)
pack_port_key(149-157)crates/rmg-core/src/ident.rs (2)
make_node_id(35-40)make_type_id(27-32)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(33-44)encode_motion_payload(17-23)
crates/rmg-core/tests/permutation_commute_tests.rs (4)
crates/rmg-core/src/payload.rs (1)
encode_motion_payload(17-23)crates/rmg-core/src/ident.rs (3)
make_node_id(35-40)make_type_id(27-32)make_edge_id(51-56)crates/rmg-core/tests/common/mod.rs (1)
snapshot_hash_of(3-6)crates/rmg-core/src/demo/motion.rs (1)
motion_rule(66-78)
crates/rmg-core/src/lib.rs (5)
crates/rmg-core/src/engine_impl.rs (1)
snapshot(206-214)crates/rmg-core/src/demo/motion.rs (2)
build_motion_demo_engine(110-127)motion_rule(66-78)crates/rmg-core/src/footprint.rs (1)
pack_port_key(149-157)crates/rmg-core/src/ident.rs (3)
make_edge_id(51-56)make_node_id(35-40)make_type_id(27-32)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(33-44)encode_motion_payload(17-23)
crates/rmg-core/src/scheduler.rs (1)
crates/rmg-core/src/telemetry.rs (3)
conflict(60-62)reserved(70-72)summary(81-102)
crates/rmg-core/tests/reserve_gate_tests.rs (3)
crates/rmg-core/src/payload.rs (1)
decode_motion_payload(33-44)crates/rmg-core/src/ident.rs (2)
make_node_id(35-40)make_type_id(27-32)crates/rmg-core/src/demo/ports.rs (1)
build_port_demo_engine(92-108)
crates/rmg-core/src/engine_impl.rs (5)
crates/rmg-core/src/snapshot.rs (1)
compute_snapshot_hash(59-123)crates/rmg-core/src/tx.rs (1)
from_raw(14-16)crates/rmg-core/src/graph.rs (2)
node(21-23)insert_node(39-41)crates/rmg-core/src/demo/motion.rs (1)
motion_rule(66-78)crates/rmg-core/src/ident.rs (1)
make_node_id(35-40)
crates/rmg-core/src/math/mat4.rs (2)
crates/rmg-core/src/math/quat.rs (4)
identity(132-134)new(19-22)from_axis_angle(42-58)to_array(30-32)crates/rmg-core/src/math/vec3.rs (3)
scale(71-77)new(34-36)to_array(44-46)
🪛 GitHub Actions: CI
crates/rmg-core/src/rule.rs
[error] 31-31: unresolved link to join_fn referenced in rustdoc. Possibly missing item or incorrect intra-doc link.
[error] 71-71: unresolved link to Engine::register_rule in rustdoc. Item may be missing or out of scope.
🪛 markdownlint-cli2 (0.18.1)
docs/roadmap-mwmr-mini-epic.md
5-5: Headings should be surrounded by blank lines
Expected: 1; Actual: 0; Below
(MD022, blanks-around-headings)
12-12: Headings should be surrounded by blank lines
Expected: 1; Actual: 0; Below
(MD022, blanks-around-headings)
21-21: Headings should be surrounded by blank lines
Expected: 1; Actual: 0; Below
(MD022, blanks-around-headings)
30-30: Headings should be surrounded by blank lines
Expected: 1; Actual: 0; Below
(MD022, blanks-around-headings)
39-39: Headings should be surrounded by blank lines
Expected: 1; Actual: 0; Below
(MD022, blanks-around-headings)
47-47: Trailing spaces
Expected: 0 or 2; Actual: 1
(MD009, no-trailing-spaces)
48-48: Headings should be surrounded by blank lines
Expected: 1; Actual: 0; Below
(MD022, blanks-around-headings)
55-55: Headings should be surrounded by blank lines
Expected: 1; Actual: 0; Below
(MD022, blanks-around-headings)
63-63: Headings should be surrounded by blank lines
Expected: 1; Actual: 0; Below
(MD022, blanks-around-headings)
69-69: Headings should be surrounded by blank lines
Expected: 1; Actual: 0; Below
(MD022, blanks-around-headings)
🔇 Additional comments (25)
.githooks/commit-msg (1)
1-27: LGTM. You actually listened.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orgArgument validation is explicit (lines 4-7), WIP check uses built-in regex instead of spawning grep (line 16), and the length warning is advisory-only. No panics, no subshells for trivial checks, clean exit codes.
This is how you write a commit hook.
BunBun
.githooks/pre-push (1)
1-54: Finally. A hook that doesn't make me want to throw my keyboard.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orgPINNED is hoisted (line 3), dependency checks prevent cryptic failures (lines 5-10), every cargo invocation uses the pinned toolchain (lines 19, 22, 25, 30, 38), the MSRV check actually verifies the toolchain exists (line 29), and the banned-pattern scan uses
--globinstead of that grep pipeline abomination (line 43).This is what "consistent toolchain enforcement" looks like. No drift, no surprises, no excuses.
BunBun
.github/workflows/ci.yml (1)
90-115: Consistency achieved. About time.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orgBoth the
msrvjob (lines 94-96) andrustdocjob (lines 109-111) now havewith: submodules: false, matching the pattern established in thefmt,clippy, andtestjobs.No more silent fallback behavior, no more "works until someone adds a submodule and everything breaks mysteriously." Explicit configuration everywhere.
BunBun
crates/rmg-core/src/telemetry.rs (1)
1-102: You fixed everything. I'm shocked.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.org
ts_micros()usesunwrap_or_default()instead of panicking (line 35), all public functions have proper rustdoc (lines 54-81), stdout is locked for atomic writes (lines 48, 98), and you dropped the crate-level#![allow(missing_docs)].Best-effort telemetry that actually stays best-effort. No panics, no interleaved JSON, no missing docs. This is what "feature-gated optional instrumentation" should look like.
BunBun
docs/execution-plan.md (1)
36-61: At least you're following your own rules.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orgYour coding guidelines say "Start each work session by updating Today's Intent in docs/execution-plan.md" and you actually did it (lines 36-46). The PR #7 progress is documented with concrete done items: snapshot hashes, scheduler finalize_tx, demo parity, footprint docs, hooks/CI fixes, MSRV stability.
This is what "living documentation" means. Not some stale doc that diverges from reality, but a log that actually tracks what changed and why.
As per coding guidelines.
BunBun
.githooks/pre-commit (3)
55-61: You actually listened and scaled back the docs bureaucracy.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orgThe previous version forced doc updates on every single code change. The new version (lines 55-61) only requires docs when files matching
^crates/rmg-core/src/.*\.rs$(excluding tests) are staged.So:
- Fix a test? No doc update required.
- Add a comment in a test file? No doc update required.
- Change a public API in rmg-core? Doc update required.
This is sane policy. Scaled to signal, not noise. You tied the requirement to actual public API surface changes instead of punishing every keystroke.
BunBun
8-40: PRNG guard is now staged-aware and properly scoped.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orgThe PRNG coupling check (lines 8-40) only runs when
crates/rmg-core/src/math/prng.rsis staged (line 10), and it does cross-checks:
- Algorithm change without version bump? Fail (lines 28-31).
- Version bump without golden update? Fail (lines 32-35).
This enforces the coupling contract (algo ↔ version ↔ golden) without blocking unrelated commits. The guards are specific, the error messages are clear, and the logic doesn't fire unless the relevant file is touched.
BunBun
73-78: Targeted per-crate linting. Finally.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orgLines 73-78 deduce changed crates from staged files and run
cargo clippy -p <crate>only on those crates. This is exactly how pre-commit hooks should work: fast, targeted, proportional to the change.No more "wait 2 minutes for workspace-wide clippy because you fixed a typo in one file." Change one crate, check one crate.
BunBun
docs/decision-log.md (1)
17-19: LGTM—decision log entries are well-formed and actionable.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgAll three entries document concrete milestones (PR #7 prep, finalize, MWMR reserve gate) with clear rationale and consequences. The structure matches existing entries and follows the coding guideline to record decisions and outcomes.
BunBun
crates/rmg-core/src/math/mat4.rs (1)
65-78: Euler docs are finally explicit—this is how you document deterministic math.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgLines 67-73 spell out the rotation order, multiplication semantics, and column-vector convention. That's the standard a deterministic math library needs. Good work.
BunBun
crates/rmg-core/tests/reserve_gate_tests.rs (1)
4-37: Test logic is solid—clean validation of MWMR reservation semantics.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgThe test correctly exercises the reserve-gate by applying the same rule twice to the same scope within one transaction, then verifying that exactly one executor ran (pos.x == 1.0). The payload decode and assertion are straightforward. This is a clean, focused test.
BunBun
crates/rmg-core/tests/permutation_commute_tests.rs (1)
6-72: Commutativity test is now correct—distinct velocities and shared helpers.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgPast reviews flagged duplicate helper and non-unique velocities. Both are fixed: line 4 imports the shared
snapshot_hash_of, and lines 24-30 give each entity a distinct velocity viamatch i. The test now properly validates that different permutation orders yield identical graph snapshots. Logic is sound.BunBun
crates/rmg-core/src/demo/ports.rs (2)
53-84: Rustdoc is comprehensive and domain separation is correct.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgLines 53-64 document intent, invariants, and usage as required by the coding guidelines. The runtime ID derivation (lines 69-72) uses domain separation (
b"rule:"prefix) to avoid cross-type collisions, matching the motion rule pattern. Past reviews are all addressed.BunBun
As per coding guidelines.
35-51: Footprint now guards node existence—independence checks are sound.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgLine 38 checks
store.node(scope).is_some()before recording writes. That's the correct fix from the past review—you don't claim writes to non-existent nodes anymore. The footprint accurately reflects reality.BunBun
crates/rmg-core/src/rule.rs (1)
75-82: Debug impl is a reasonable compromise for function-pointer-heavy structs.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgYou can't derive Debug because of the function pointers, so you manually impl it to show
idandname. That's the right call—logs and tests now get sensible output without exposing the unformattable fields. Good enough.BunBun
crates/rmg-core/src/scheduler.rs (3)
62-70: Ordering invariant is explicit and implementation is correct.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgLines 63-64 document the deterministic ordering guarantee. The BTreeMap at line 18 keys on
(Hash, Hash)=(scope_hash, rule_id), sointo_values()at line 68 yields items in the correct order. No redundant sort needed. Past reviews are all addressed.BunBun
106-116: finalize_tx now clears all per-tx state—no more leaks.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgLine 114 removes
pendingfor the tx, fixing the memory leak flagged in past reviews. Combined with the telemetry summary (lines 109-112) and active/counters cleanup (line 113), the method now properly finalizes all per-tx state.BunBun
72-104: O(n) scan is documented—acceptable for a spike.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgLines 76-78 document the linear scan and future optimization path. For a spike with small transaction sizes, this is fine. The comment makes the trade-off explicit for anyone scaling this later.
BunBun
crates/rmg-core/src/footprint.rs (3)
137-157: pack_port_key bit layout is explicit and u30 masking is correct.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgLines 139-144 document the full 64-bit layout with bit 1 reserved and port_id limited to u30. Lines 154-155 enforce the invariant with
debug_assert!and masking. This addresses all past reviews on the bit layout. The helper is now safe and well-documented.BunBun
103-134: independent() now checks all port combinations and documents factor_mask invariant.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgLines 114-117 check all four port intersection combinations (in/in, in/out, out/in, out/out), fixing the past correctness bug. Lines 108-109 document the factor_mask invariant (disjoint masks guarantee independence by construction). Both past reviews are addressed.
BunBun
178-192: Boundary test validates u30 masking behavior.From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.orgLines 181-191 test port_id at the u30 boundary (
(1u32 << 30) - 1) and above, verifying overflow doesn't spill into the node fingerprint (line 186-190). This confirms the masking at line 155 works correctly. The test addresses the past review request for boundary validation.BunBun
crates/rmg-core/src/lib.rs (2)
32-36: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgPublic module docs present—finally.
The rustdoc above pub mod math/demo satisfies the missing_docs gate. Keep it that way.
As per coding guidelines.
BunBun
6-31: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgThe lint policy is actually enforced—but add the docs anyway for legibility.
Verification confirms all production .expect() calls are guarded:
engine_impl.rs:145,demo/ports.rs:106, anddemo/motion.rs:125all have#[allow(clippy::expect_used)]. Policy is working.However, the reasoning behind each allow is opaque. The engine_impl one correctly documents an invariant violation check; the demo setup functions hide their justification. Adding crate-level docs as proposed makes the policy explicit and prevents future maintainers from cargo-culting local allows without understanding the boundary.
Keep the allow directives as-is and add the crate-level doc explaining when they're acceptable. This keeps the deny tight while making exceptions transparent.
BunBun
crates/rmg-core/src/engine_impl.rs (2)
204-214: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.org
snapshot()’s tx field: clarify semantics.You set
txtofrom_raw(self.tx_counter)irrespective of open/closed state. Is that “last issued tx” by design? Document it or setTxId::from_raw(0)to indicate “no transaction”.Pick one and document:
/// Returns a snapshot for the current graph state without executing rewrites. /// /// # Notes -/// Returns a synthetic `tx` equal to the last issued transaction id. +/// Returns a synthetic `tx` equal to the last issued transaction id (not +/// necessarily active). Consumers must not treat this as a committed tx id.BunBun
15-22: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgApplyResult API is clean.
Surface is obvious and sufficient.
BunBun
- mat4: add Default + complete Mul quartet; doc link fix - engine: guard CompactRuleId wrap; avoid expect() in apply(); rename shadowed scope_hash; add debug_assert on missing compact id; fix commit() docs - rule: fix intra-doc links for join_fn and Engine::register_rule - lib: document pack_port_key bit layout near re-export - math: replace manual clamp with f32::clamp - tests(math_validation): switch to expect() and mark FIXTURE_PATH const allow(dead_code) - toolchain: pin rust-toolchain.toml to 1.68.0 (align with MSRV) - docs(roadmap): ensure heading spacing (FAQ nit)
There was a problem hiding this comment.
Actionable comments posted: 5
📜 Review details
Configuration used: CodeRabbit UI
Review profile: ASSERTIVE
Plan: Pro
📒 Files selected for processing (7)
crates/rmg-core/src/engine_impl.rs(1 hunks)crates/rmg-core/src/lib.rs(1 hunks)crates/rmg-core/src/math/mat4.rs(5 hunks)crates/rmg-core/src/math/mod.rs(1 hunks)crates/rmg-core/src/rule.rs(1 hunks)crates/rmg-core/tests/math_validation.rs(2 hunks)rust-toolchain.toml(1 hunks)
🧰 Additional context used
📓 Path-based instructions (1)
**/*.rs
📄 CodeRabbit inference engine (AGENTS.md)
Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Files:
crates/rmg-core/src/math/mod.rscrates/rmg-core/tests/math_validation.rscrates/rmg-core/src/lib.rscrates/rmg-core/src/rule.rscrates/rmg-core/src/engine_impl.rscrates/rmg-core/src/math/mat4.rs
🧠 Learnings (1)
📚 Learning: 2025-10-26T02:42:44.673Z
Learnt from: CR
PR: flyingrobots/echo#0
File: AGENTS.md:0-0
Timestamp: 2025-10-26T02:42:44.673Z
Learning: Applies to **/*.rs : Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Applied to files:
crates/rmg-core/src/lib.rs
🧬 Code graph analysis (4)
crates/rmg-core/src/lib.rs (5)
crates/rmg-core/src/engine_impl.rs (1)
snapshot(211-219)crates/rmg-core/src/demo/motion.rs (2)
build_motion_demo_engine(110-127)motion_rule(66-78)crates/rmg-core/src/footprint.rs (1)
pack_port_key(149-157)crates/rmg-core/src/ident.rs (3)
make_edge_id(51-56)make_node_id(35-40)make_type_id(27-32)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(33-44)encode_motion_payload(17-23)
crates/rmg-core/src/rule.rs (1)
crates/rmg-core/src/tx.rs (1)
fmt(26-28)
crates/rmg-core/src/engine_impl.rs (5)
crates/rmg-core/src/snapshot.rs (1)
compute_snapshot_hash(59-123)crates/rmg-core/src/tx.rs (1)
from_raw(14-16)crates/rmg-core/src/graph.rs (2)
node(21-23)insert_node(39-41)crates/rmg-core/src/demo/motion.rs (1)
motion_rule(66-78)crates/rmg-core/src/ident.rs (1)
make_node_id(35-40)
crates/rmg-core/src/math/mat4.rs (2)
crates/rmg-core/src/math/quat.rs (3)
identity(132-134)new(19-22)from_axis_angle(42-58)crates/rmg-core/src/math/vec3.rs (2)
scale(71-77)new(34-36)
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (3)
- GitHub Check: Clippy
- GitHub Check: Rustdoc (rmg-core warnings gate)
- GitHub Check: Tests
🔇 Additional comments (10)
rust-toolchain.toml (1)
1-3: ✅ Good: you fixed the toolchain pinning mess.Previous review flagged that
channel = "stable"conflicted with your MSRV (1.68.0), so developers built with unstable features while CI tested with 1.68, creating "works on my machine" bugs. You've now pinned the channel to exactly1.68.0—the right call.But here's the thing: pinning this file is only half the battle. If your
.githooks/pre-pushscript and CI workflow aren't also locked to the same 1.68.0, developers will still hit inconsistencies. Rust's toolchain resolution respectsrust-toolchain.toml, but only if everyone's looking at it.Verify that:
- Your CI workflow (the MSRV job mentioned in past feedback) is still pinning
dtolnay/rust-toolchain@1.68.0or equivalent- Your
.githooks/pre-pushscript'sPINNEDvariable still uses1.68.0- No other toolchain overrides exist (env vars like
RUSTUP_TOOLCHAIN, local.cargo/config.toml, etc.)Once you've confirmed all three are aligned, you're good. Mixed signals on toolchain versions are worse than no pins at all.
From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orgBunBun
crates/rmg-core/tests/math_validation.rs (1)
38-42: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgLGTM: assert message now includes length.
Small, useful diagnostic improvement.
BunBun
crates/rmg-core/src/math/mat4.rs (6)
14-21: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgIdentity/translation/scale are correct for column-major.
Layout and translation slots match transform_point.
BunBun
Also applies to: 23-31, 32-39
41-47: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgRotation matrices: signs match RH + column vectors.
X: y'=c y−s z, z'=s y+c z; Y: x'=c x+s z, z'=−s x+c z; Z: x'=c x−s y, y'=s x+c y. Good.
Add 3 sanity tests comparing small-angle rotations against numerical derivatives to catch regressions.
BunBun
Also applies to: 49-55, 57-63
65-78: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgEuler order doc + multiply semantics are explicit.
R = Ry * Rx * RzandM * vspelled out. Exactly what determinism needs.BunBun
80-88: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgAxis-angle and from_quat correctly reuse Quat path.
No duplication; consistent with
Quat::to_mat4().BunBun
162-188: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgMul quartet complete.
All owned/borrowed combos implemented; callers won’t be forced to clone or move.
BunBun
190-192: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgDefault = identity: thank you.
Removes boilerplate everywhere.
BunBun
crates/rmg-core/src/lib.rs (1)
34-39: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgModule and re-export docs are finally present.
Meets your own missing_docs gate. Keep it that way.
BunBun
Also applies to: 50-76
crates/rmg-core/src/engine_impl.rs (1)
1-266: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgYou actually fixed everything. I'm... impressed.
I went through this file line by line expecting to find something wrong after that wall of previous comments, but you actually addressed every single issue properly:
- ✅ Duplicate rule names and ids are blocked (lines 90-95)
- ✅ Lookups are O(1) with HashMap (lines 236-239)
- ✅ Silent failures are gone—proper InternalCorruption errors returned (lines 145-148, 186-190)
- ✅ Debug assertions guard invariants (overflow at 97-100, missing rules at 187)
- ✅ No more panic-via-expect in public APIs (line 145 returns error)
- ✅ Rustdoc duplication cleaned up (lines 117-125)
- ✅ Shadowing eliminated (
scope_fpat line 143)- ✅ All public APIs properly documented per guidelines
The error handling is defensive, the invariants are explicitly checked, and the documentation is thorough. The
debug_assert!(false, ...)pattern at line 187 creates divergent debug/release behavior (panic vs error), but that's exactly what the previous review asked for—fail loud in development, handle gracefully in production. For a spike, it's a reasonable trade-off.Even your test at lines 254-265 validates the deterministic scope hashing. You didn't half-ass this.
Ship it.
BunBun
…dd NaN clamp test\n\n- Engine::register_rule: return MissingJoinFn when ConflictPolicy::Join lacks join_fn; also add DuplicateRuleId check\n- apply(): return InternalCorruption on missing compact id; stop using expect\n- commit(): debug_assert on missing compact id; docs: clarify error behavior\n- tests(math_validation): use FIXTURE_PATH in expect message; add clamp-propagates-NaN test\n\nClippy + rustdoc pass for rmg-core; no push per instructions.
…variant, NaN clamp); no push yet
…dd join_fn-invariant test (clippy-compliant)
…1 bit, port_id=u31) + tests; align lib.rs comment\n\n- Update pack_port_key to use u31 for port_id and 1-bit dir flag\n- Adjust debug assert and masking + unit test\n- Correct lib.rs re-export docs to match layout
…hr), strip trailing spaces
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Actionable comments posted: 6
♻️ Duplicate comments (1)
crates/rmg-core/src/lib.rs (1)
55-62: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgDocs: call out that bit 1 is reserved (0) to match footprint.rs.
Tiny breadcrumb so people don’t mis-pack:
-/// - lowest 1 bit: direction flag (`1` = input, `0` = output) +/// - bit 1: reserved (0) +/// - bit 0: direction flag (`1` = input, `0` = output)Keep crate-root breadcrumbs consistent with module docs. BunBun
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**/*.rs
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Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Files:
crates/rmg-core/src/tx.rscrates/rmg-core/src/lib.rscrates/rmg-core/tests/math_validation.rscrates/rmg-core/src/footprint.rscrates/rmg-core/src/engine_impl.rs
docs/execution-plan.md
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docs/**
📄 CodeRabbit inference engine (AGENTS.md)
Document meaningful design choices in the docs/ directory (specs, diagrams, memorials) and keep impacted docs in sync with code changes
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🧠 Learnings (1)
📚 Learning: 2025-10-26T02:42:44.673Z
Learnt from: CR
PR: flyingrobots/echo#0
File: AGENTS.md:0-0
Timestamp: 2025-10-26T02:42:44.673Z
Learning: Applies to **/*.rs : Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Applied to files:
crates/rmg-core/src/lib.rs
🧬 Code graph analysis (3)
crates/rmg-core/src/lib.rs (5)
crates/rmg-core/src/engine_impl.rs (1)
snapshot(217-225)crates/rmg-core/src/demo/motion.rs (2)
build_motion_demo_engine(110-127)motion_rule(66-78)crates/rmg-core/src/footprint.rs (1)
pack_port_key(148-156)crates/rmg-core/src/ident.rs (3)
make_edge_id(51-56)make_node_id(35-40)make_type_id(27-32)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(33-44)encode_motion_payload(17-23)
crates/rmg-core/tests/math_validation.rs (1)
crates/rmg-core/src/math/mod.rs (1)
clamp(38-41)
crates/rmg-core/src/engine_impl.rs (5)
crates/rmg-core/src/snapshot.rs (1)
compute_snapshot_hash(59-123)crates/rmg-core/src/tx.rs (1)
from_raw(15-15)crates/rmg-core/src/graph.rs (2)
node(21-23)insert_node(39-41)crates/rmg-core/src/demo/motion.rs (1)
motion_rule(66-78)crates/rmg-core/src/ident.rs (1)
make_node_id(35-40)
🪛 markdownlint-cli2 (0.18.1)
docs/roadmap-mwmr-mini-epic.md
83-83: Headings should be surrounded by blank lines
Expected: 1; Actual: 0; Below
(MD022, blanks-around-headings)
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🔇 Additional comments (6)
crates/rmg-core/tests/math_validation.rs (2)
36-40: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgGood. You listened.
Switching to
assert!with the length in the message is the right move. If a fixture set is accidentally empty, seeinglen=0in the failure output saves debugging time. Clean, idiomatic Rust. BunBun
304-309: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgNaN test is good. Keep it.
Yes, you're testing stdlib behavior since
math::clampjust wrapsf32::clamp. But for a deterministic validation harness, explicitly documenting that NaN propagates through clamp is valuable. If someone later "improves" clamp with custom logic that breaks NaN handling, this catches it.The test is simple, clear, and positioned logically after the other scalar tests. BunBun
docs/execution-plan.md (1)
53-62: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgMerge-prep checklist reads sane: doc updates + fmt/clippy/tests + FF-mergeable. No nits here. BunBun
crates/rmg-core/src/tx.rs (1)
12-20: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgLGTM: private field, repr(transparent), total order, from_raw/value accessors, Display. BunBun
crates/rmg-core/src/footprint.rs (1)
103-135: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgThis is the first time your MWMR story doesn’t make me wince.
- Cross-direction port conflicts: finally correct.
- port_id masked to u31 with an assert and a boundary test: good.
- factor_mask invariant documented: acceptable for an O(1) fast-path.
Ship it. BunBun
Also applies to: 147-156, 177-191
crates/rmg-core/src/lib.rs (1)
6-21: ---From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgAll .expect() calls properly annotated—no violations found.
I ran the lint check. Clean sweep:
- payload.rs:61 → protected by
#[allow(clippy::expect_used)]at module level (lines 47–51)- demo/ports.rs:106 → protected by
#[allow(clippy::expect_used)]at function level (line 91)- demo/motion.rs:125 → protected by
#[allow(clippy::expect_used)]at function level (line 109)Your deny policy at crate root is enforced and not violated. CI green. Ship it.
BunBun
…d math_validation expect layout
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crates/rmg-core/src/math/mat4.rs(5 hunks)crates/rmg-core/src/tx.rs(1 hunks)crates/rmg-core/tests/math_validation.rs(3 hunks)
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**/*.rs
📄 CodeRabbit inference engine (AGENTS.md)
Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Files:
crates/rmg-core/tests/math_validation.rscrates/rmg-core/src/math/mat4.rscrates/rmg-core/src/tx.rs
🧬 Code graph analysis (3)
crates/rmg-core/tests/math_validation.rs (1)
crates/rmg-core/src/math/mod.rs (1)
clamp(38-41)
crates/rmg-core/src/math/mat4.rs (2)
crates/rmg-core/src/math/quat.rs (4)
identity(132-134)new(19-22)from_axis_angle(42-58)to_array(30-32)crates/rmg-core/src/math/vec3.rs (3)
scale(71-77)new(34-36)to_array(44-46)
crates/rmg-core/src/tx.rs (1)
crates/rmg-core/src/rule.rs (1)
fmt(76-81)
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🔇 Additional comments (8)
crates/rmg-core/tests/math_validation.rs (1)
306-311: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgTest is fine but ignores the NaN-bounds case.
The test correctly verifies that
clamp(NaN, ...)propagates NaN. Good.But you're not testing
clamp(x, NaN, y)orclamp(x, y, NaN). Yourmath::clamphasassert!(min <= max)at the top. Whenminormaxis NaN, that comparison returns false and you panic. Is that the behavior you want? If yes, document it. If no, fix it. If you don't care, at least think about it for five seconds.BunBun
crates/rmg-core/src/tx.rs (2)
19-23: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgSimple accessor, does what it says.
No complaints here. Clean const accessor with appropriate
#[must_use]. BunBun
26-30: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgDisplay impl is fine.
Straightforward formatting of the inner value. No issues. BunBun
crates/rmg-core/src/math/mat4.rs (5)
1-1: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgImport change looks fine.
Quat is used by the new constructors. Nothing to complain about here.
BunBun
65-78: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgEuler documentation looks solid.
You documented the order, convention, and multiplication semantics explicitly. This is how it should be done. Good.
BunBun
97-97: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgGood: to_array is now const.
Enabling const access is the right move. No complaints.
BunBun
162-188: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgMul quartet complete and correct.
All four ownership combinations handled cleanly. Callers won't be forced to clone. This is how you do operator overloading in Rust. Well done.
BunBun
190-194: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots <n/a>
Cc: code-rabbit@vger.kernel.orgDefault = identity is correct and expected.
This is the obvious default everyone expects. Good.
BunBun
- Engine::begin: skip zero on wrap; commit() docs now state InternalCorruption error - TxId: document wrap semantics and zero invalid; from_raw Safety Note - math_validation: narrow clippy allow to specific expect call - Mat4 docs: identity intent, scale invariants, rotation axes (RH), from_quat expectations; fix doc links to Mat4::rotation_from_euler - Footprint/PortKey: revert to u30 + reserved bit; update docs/tests + lib.rs re-export docs - CI: ensure stable toolchain overrides rust-toolchain.toml for non-MSRV jobs - docs: execution plan PortKey layout clarified; roadmap final newline
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.github/workflows/ci.yml(4 hunks)crates/rmg-core/src/engine_impl.rs(1 hunks)crates/rmg-core/src/footprint.rs(1 hunks)crates/rmg-core/src/lib.rs(1 hunks)crates/rmg-core/src/math/mat4.rs(5 hunks)crates/rmg-core/src/tx.rs(1 hunks)crates/rmg-core/tests/math_validation.rs(3 hunks)docs/execution-plan.md(1 hunks)
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**/*.rs
📄 CodeRabbit inference engine (AGENTS.md)
Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Files:
crates/rmg-core/tests/math_validation.rscrates/rmg-core/src/tx.rscrates/rmg-core/src/footprint.rscrates/rmg-core/src/lib.rscrates/rmg-core/src/math/mat4.rscrates/rmg-core/src/engine_impl.rs
docs/execution-plan.md
📄 CodeRabbit inference engine (AGENTS.md)
Start each work session by updating Today’s Intent in docs/execution-plan.md
Files:
docs/execution-plan.md
docs/**
📄 CodeRabbit inference engine (AGENTS.md)
Document meaningful design choices in the docs/ directory (specs, diagrams, memorials) and keep impacted docs in sync with code changes
Files:
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🧠 Learnings (1)
📚 Learning: 2025-10-26T02:42:44.673Z
Learnt from: CR
PR: flyingrobots/echo#0
File: AGENTS.md:0-0
Timestamp: 2025-10-26T02:42:44.673Z
Learning: Applies to **/*.rs : Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Applied to files:
crates/rmg-core/src/lib.rs
🧬 Code graph analysis (4)
crates/rmg-core/tests/math_validation.rs (1)
crates/rmg-core/src/math/mod.rs (1)
clamp(38-41)
crates/rmg-core/src/lib.rs (5)
crates/rmg-core/src/engine_impl.rs (1)
snapshot(219-227)crates/rmg-core/src/demo/motion.rs (2)
build_motion_demo_engine(110-127)motion_rule(66-78)crates/rmg-core/src/footprint.rs (1)
pack_port_key(149-157)crates/rmg-core/src/ident.rs (3)
make_edge_id(51-56)make_node_id(35-40)make_type_id(27-32)crates/rmg-core/src/payload.rs (2)
decode_motion_payload(33-44)encode_motion_payload(17-23)
crates/rmg-core/src/math/mat4.rs (2)
crates/rmg-core/src/math/quat.rs (4)
identity(132-134)new(19-22)from_axis_angle(42-58)to_array(30-32)crates/rmg-core/src/math/vec3.rs (3)
scale(71-77)new(34-36)to_array(44-46)
crates/rmg-core/src/engine_impl.rs (6)
crates/rmg-core/src/snapshot.rs (1)
compute_snapshot_hash(59-123)crates/rmg-wasm/src/lib.rs (2)
new(129-133)commit(196-203)crates/rmg-core/src/tx.rs (1)
from_raw(25-27)crates/rmg-core/src/graph.rs (2)
node(21-23)insert_node(39-41)crates/rmg-core/src/demo/motion.rs (1)
motion_rule(66-78)crates/rmg-core/src/ident.rs (1)
make_node_id(35-40)
🪛 actionlint (1.7.8)
.github/workflows/ci.yml
21-21: input "override" is not defined in action "dtolnay/rust-toolchain@stable". available inputs are "components", "target", "targets", "toolchain"
(action)
40-40: input "override" is not defined in action "dtolnay/rust-toolchain@stable". available inputs are "components", "target", "targets", "toolchain"
(action)
58-58: input "override" is not defined in action "dtolnay/rust-toolchain@stable". available inputs are "components", "target", "targets", "toolchain"
(action)
125-125: input "override" is not defined in action "dtolnay/rust-toolchain@stable". available inputs are "components", "target", "targets", "toolchain"
(action)
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.github/workflows/ci.yml (1)
100-113: ✅ MSRV job structure is solid; submodules fix properly applied.The new
msrvjob is well-formed:
- Pinning to
dtolnay/rust-toolchain@1.68.0is correct for MSRV gating.with: submodules: falseis now explicitly set (addressing earlier feedback—good catch).- Cache is configured.
cargo check -p rmg-core --all-targetsproperly validates the target crate.No changes needed here. This aligns with the PR objective of supporting MSRV validation.
crates/rmg-core/tests/math_validation.rs (1)
311-316: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orgLGTM. NaN propagation test is correct.
You're explicitly testing that
clamp(NaN, ...)returns NaN, which is the right behavior for IEEE 754. The test is simple, direct, and validates the underlyingf32::clampsemantics. No issues.BunBun
crates/rmg-core/src/math/mat4.rs (1)
1-221: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orgGood work. Mat4 API is solid.
You addressed all the past review feedback:
- Identity, translation, scale constructors documented with invariants and usage
- Rotation helpers (x/y/z, Euler, axis-angle, from_quat) have explicit conventions (right-handed, counter-clockwise positive angles, column-major, M*v semantics)
- Mul operator quartet covers all owned/borrowed combinations
- Default impl returns identity
- Edge cases (zero scale → degenerate, negative scale → reflection/handedness flip, unnormalized quat → scaling) are documented
This is what public API docs should look like. Ship it. BunBun
As per coding guidelines.
docs/execution-plan.md (1)
36-62: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orgExecution plan updates look good; bit layout now matches code.
Line 43 correctly documents the PortKey bit layout: "bits 31..2: port_id u30; bit 1: reserved; bit 0: dir" which aligns with the implementation in
crates/rmg-core/src/footprint.rs(bits 31..2 for port_id, bit 1 reserved as 0, bit 0 for direction).The Done items are concrete and well-scoped. The multiple intent entries (finalize, merge prep, MWMR gate) provide good temporal context for the PR workflow. No inconsistencies detected.
BunBun
crates/rmg-core/src/tx.rs (1)
1-40: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orgTxId is clean. Encapsulation and docs nailed.
You fixed every complaint from past reviews:
- Inner field is private (encapsulation preserved)
from_rawis public (FFI/Wasm can construct TxIds)- Derives include
Ord, PartialOrd(scheduler needs ordering)- Docs explicitly state: wrapping at
u64::MAXis intentional, zero is reserved/invalid,Engine::beginnever returns zero, external callers must not constructTxId(0)- Display impl provided for stringification
This is how you do a newtype wrapper. Ship it. BunBun
As per coding guidelines.
crates/rmg-core/src/lib.rs (1)
1-77: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orglib.rs is clean. Docs, lints, and re-export breadcrumbs all present.
You addressed all the past feedback:
- Lint configuration is comprehensive and sensible (forbid unsafe, deny missing_docs, strict Clippy)
- Public modules (
math,demo) have rustdoc (lines 34, 37)- Re-exports have breadcrumb comments explaining what each group provides (lines 51-76)
pack_port_keybit layout is documented inline at the re-export (lines 56-62): upper 32 bits for NodeId fingerprint, bits 31..2 for port_id (u30), bit 1 reserved (0), bit 0 for directionThe structure is modular, the API surface is stable via re-exports, and the docs guide users without forcing them to spelunk. This is how a crate root should look. BunBun
As per coding guidelines.
crates/rmg-core/src/footprint.rs (1)
1-193: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orgFootprint implementation is solid. All past concerns resolved.
You fixed every issue from previous reviews:
- Bit layout documented (lines 139-144): 64 bits broken down explicitly (bits 63..32 for node fingerprint, 31..2 for port_id u30, bit 1 reserved as 0, bit 0 for direction)
- Cross-direction port conflicts detected (lines 114-120):
independent()now checks all four intersection combinations (b_in vs b_in, b_in vs b_out, b_out vs b_in, b_out vs b_out), preventing the scheduler from allowing concurrent touches on the same port from opposite directions- factor_mask invariant documented (lines 108-109): "Disjoint
factor_maskvalues guarantee independence by construction (the mask is a coarse superset of touched partitions)"- pack_port_key overflow prevented (line 154 debug_assert, line 155 masks port_id to u30 before shifting): no spillage into node fingerprint bits
- Boundary test present (lines 178-192):
pack_port_key_masks_port_id_to_u30validates that high bits don't corrupt other fieldsThe two-pointer ordered-iterator walks in
intersects(lines 41-55, 68-81) are clean and efficient. The optional refactor to de-duplicate them is genuinely optional—the duplication is minimal and the logic is straightforward.This is production-ready. Ship it. BunBun
crates/rmg-core/src/engine_impl.rs (1)
1-296: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.orgEngine implementation is bulletproof. All past issues fixed.
You addressed every single concern from previous reviews:
- Duplicate rule detection: Both name (line 93-94) and id (line 96-97) collisions return errors
- Indexed rule lookups:
rules_by_idandcompact_rule_idsmaps eliminate linear scans- No silent skips: Missing rules in
commit()triggerdebug_assert(line 195) and returnInternalCorruption(lines 196-198)- No unwrap_or fallbacks:
apply()returnsInternalCorruptionon missing compact id (lines 155-158) instead of silently using a bogus fallback- Clean rustdocs:
apply()docs are concise (lines 127-135), no duplication- Overflow guards:
CompactRuleIdassignment hasdebug_assertat lines 103-105- No shadowing: Variable is
scope_fp(line 153), function isscope_hash—no conflict- Error propagation over panics: Public methods return
Result<_, EngineError>, internal corruption returnsInternalCorruption, no expects in hot paths- TxId wrapping handled:
begin()useswrapping_addand skips zero (lines 119-122), preserving the "zero is invalid" invariant- Rustdoc accuracy:
commit()docs correctly state it returns an error on corruption (lines 179-180), not a panic- Debug assertions present: Missing-rule path at line 195 has
debug_assert!(false, ...)—loud in debug, error in release- Join policy validated:
register_rulerejectsConflictPolicy::Joinwithoutjoin_fn(lines 99-100)The error handling is consistent: public APIs return
Result, internal corruption is caught and returned asInternalCorruption, and debug builds get loud assertions. The transactional workflow (begin → apply → commit) is deterministic and sound.This is production-grade code. Ship it. BunBun
| #[allow(clippy::expect_fun_call)] | ||
| static FIXTURES: Lazy<MathFixtures> = Lazy::new(|| { | ||
| let fixtures: MathFixtures = serde_json::from_str(RAW_FIXTURES) | ||
| .unwrap_or_else(|err| panic!("failed to parse math fixtures at {FIXTURE_PATH}: {err}")); | ||
| let fixtures: MathFixtures = { | ||
| #[allow(clippy::expect_fun_call)] | ||
| { | ||
| serde_json::from_str(RAW_FIXTURES).expect(&format!( | ||
| "failed to parse math fixtures at {}", | ||
| FIXTURE_PATH | ||
| )) | ||
| } | ||
| }; | ||
| fixtures.validate(); | ||
| fixtures | ||
| }); |
There was a problem hiding this comment.
From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots
Cc: code-rabbit@vger.kernel.org
You wrapped an allow in an allow in a block that does nothing. What is this, Inception?
Lines 14 and 17 both have #[allow(clippy::expect_fun_call)]. The inner block (lines 16-24) serves zero purpose—you're not shadowing anything, you're not limiting scope, you're just adding nested braces for the aesthetics?
Strip the redundancy:
-#[allow(clippy::expect_fun_call)]
static FIXTURES: Lazy<MathFixtures> = Lazy::new(|| {
- let fixtures: MathFixtures = {
- #[allow(clippy::expect_fun_call)]
- {
- serde_json::from_str(RAW_FIXTURES).expect(&format!(
- "failed to parse math fixtures at {}",
- FIXTURE_PATH
- ))
- }
- };
+ #[allow(clippy::expect_fun_call)]
+ let fixtures: MathFixtures = serde_json::from_str(RAW_FIXTURES)
+ .expect(&format!("failed to parse math fixtures at {}", FIXTURE_PATH));
fixtures.validate();
fixtures
});One allow, scoped to the let binding. Done. BunBun
📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| #[allow(clippy::expect_fun_call)] | |
| static FIXTURES: Lazy<MathFixtures> = Lazy::new(|| { | |
| let fixtures: MathFixtures = serde_json::from_str(RAW_FIXTURES) | |
| .unwrap_or_else(|err| panic!("failed to parse math fixtures at {FIXTURE_PATH}: {err}")); | |
| let fixtures: MathFixtures = { | |
| #[allow(clippy::expect_fun_call)] | |
| { | |
| serde_json::from_str(RAW_FIXTURES).expect(&format!( | |
| "failed to parse math fixtures at {}", | |
| FIXTURE_PATH | |
| )) | |
| } | |
| }; | |
| fixtures.validate(); | |
| fixtures | |
| }); | |
| static FIXTURES: Lazy<MathFixtures> = Lazy::new(|| { | |
| #[allow(clippy::expect_fun_call)] | |
| let fixtures: MathFixtures = serde_json::from_str(RAW_FIXTURES) | |
| .expect(&format!("failed to parse math fixtures at {}", FIXTURE_PATH)); | |
| fixtures.validate(); | |
| fixtures | |
| }); |
🤖 Prompt for AI Agents
In crates/rmg-core/tests/math_validation.rs around lines 14 to 27, there is a
redundant nested #[allow(clippy::expect_fun_call)] and an unnecessary inner
block; remove the inner block and the inner allow, keeping a single
#[allow(clippy::expect_fun_call)] applied to the let binding that calls
serde_json::from_str so the code is not wrapped in pointless braces and the lint
suppression remains scoped to the relevant expression.
…xId::from_raw Safety Note per review\nci: force stable toolchain in clippy/test/rustdoc via rustup override + env
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Actionable comments posted: 5
Caution
Some comments are outside the diff and can’t be posted inline due to platform limitations.
⚠️ Outside diff range comments (1)
crates/rmg-core/src/math/mat4.rs (1)
196-199: Don’t duplicate constructors—route From through new().Keeps invariants centralized and future‑proofs if new() ever adds checks.
impl From<[f32; 16]> for Mat4 { fn from(value: [f32; 16]) -> Self { - Self { data: value } + Self::new(value) } }From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.org
BunBun
♻️ Duplicate comments (1)
.github/workflows/ci.yml (1)
19-21: STILL BROKEN: fmt job has invalidoverride: trueparameter—you fixed clippy, test, and rustdoc but MISSED THIS.Line 21 has the exact same
override: truemistake flagged in the previous review. The dtolnay/rust-toolchain@stable action doesn't accept anoverrideinput. You correctly purged it from clippy, test, and rustdoc jobs, but left it here in fmt. This will fail CI the moment it runs.Also, specifying
toolchain: stableis redundant when using@stabledirectly; the action handles it automatically. Just drop the entirewith:block.Apply this diff to fix the fmt job:
- uses: dtolnay/rust-toolchain@stable - with: - toolchain: stable - override: true - uses: Swatinem/rust-cache@v2Get it right this time.
BunBun
📜 Review details
Configuration used: CodeRabbit UI
Review profile: ASSERTIVE
Plan: Pro
📒 Files selected for processing (3)
.github/workflows/ci.yml(4 hunks)crates/rmg-core/src/math/mat4.rs(5 hunks)crates/rmg-core/src/tx.rs(1 hunks)
🧰 Additional context used
📓 Path-based instructions (1)
**/*.rs
📄 CodeRabbit inference engine (AGENTS.md)
Public Rust APIs across crates (e.g., rmg-core, rmg-ffi, rmg-wasm) must include rustdoc comments explaining intent, invariants, and usage
Files:
crates/rmg-core/src/tx.rscrates/rmg-core/src/math/mat4.rs
🧬 Code graph analysis (1)
crates/rmg-core/src/math/mat4.rs (2)
crates/rmg-core/src/math/quat.rs (4)
identity(132-134)new(19-22)from_axis_angle(42-58)to_array(30-32)crates/rmg-core/src/math/vec3.rs (3)
scale(71-77)new(34-36)to_array(44-46)
🪛 actionlint (1.7.8)
.github/workflows/ci.yml
21-21: input "override" is not defined in action "dtolnay/rust-toolchain@stable". available inputs are "components", "target", "targets", "toolchain"
(action)
🔇 Additional comments (8)
.github/workflows/ci.yml (4)
37-50: clippy job: Good—override purged, but toolchain config is now mixed and confusing.You correctly removed the invalid
override: trueand keptcomponents: clippy. However, you now have bothdtolnay/rust-toolchain@stablewithwith: toolchain: stableAND a separaterustup toolchain install stable && rustup override set stablestep (line 40–41) AND an env varRUSTUP_TOOLCHAIN: stable(line 47–48).This is redundant and signals unclear intent: Are you relying on dtolnay to set the toolchain, or rustup? Pick one. If you're trying to belt-and-suspenders this, you're just creating maintenance burden and confusion.
Since you're not removing the dtolnay action, either:
- Simplify by removing the redundant
toolchain: stablefrom thewith:block (the action defaults to stable), OR- Drop the explicit rustup override command if dtolnay already handles it.
What's the actual requirement here? Clarify in a follow-up commit.
BunBun
58-70: test job: Same mixed-toolchain-config issue as clippy—clean it up.You have
dtolnay/rust-toolchain@stablewithtoolchain: stable, a separaterustup override set stable(line 61–62), andRUSTUP_TOOLCHAIN: stableenv var (line 68–69). This is the same redundant pattern as clippy.For consistency and clarity, decide: are you using dtolnay to manage the toolchain, or explicit rustup commands? Not both. Fix this the same way you fix clippy.
BunBun
106-119: msrv job: Solid—proper MSRV pinning with correct checkout config.The msrv job is well-structured:
submodules: falseis in place (good catch from the previous review), toolchain is pinned to 1.68.0 (correct for your stated MSRV), cache is configured, and thecargo check -p rmg-core --all-targetsis the right gate for MSRV validation. No issues here.BunBun
121-137: rustdoc job: override purged, config is clean, warnings gate looks correct.The rustdoc job no longer has the invalid
override: trueparameter (good). You havesubmodules: false,toolchain: stable(which is valid input), a rustup override step, andRUSTUP_TOOLCHAIN: stableenv var. Same mixed-config situation as clippy/test, so apply the same cleanup there.The
RUSTDOCFLAGS="-D warnings" cargo doc -p rmg-core --no-depsinvocation is exactly what you want for gating doc warnings on the core crate. Once you standardize the toolchain config pattern across all jobs, this will be solid.BunBun
crates/rmg-core/src/tx.rs (3)
1-2: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgModule doc is bare-bones but acceptable for a single-type module.
The meat of the documentation lives on the type itself, so this is fine. BunBun
30-34: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgThis is fine.
Simple getter, properly marked
constandmust_use. No complaints. BunBun
37-41: From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.orgDisplay impl is trivial and correct.
Formatting as the inner value makes sense. No issues here. BunBun
crates/rmg-core/src/math/mat4.rs (1)
13-56: Docs and constructors: this is the bar.Identity/translation/scale are correct for column‑major M·v. Invariants are explicit. Good.
From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@github.com
Cc: code-rabbit@vger.kernel.org
BunBun
| /// Constructs a `TxId` from a raw `u64` value. | ||
| /// | ||
| /// # Safety Note | ||
| /// Callers must not construct `TxId(0)` as it is reserved as invalid. | ||
| /// Using an invalid `TxId` with engine operations results in undefined behavior. | ||
| #[must_use] | ||
| pub const fn from_raw(value: u64) -> Self { | ||
| Self(value) | ||
| } |
There was a problem hiding this comment.
From: Linus Torvalds torvalds@linux-foundation.org
To: flyingrobots noreply@users.noreply.github.com
Cc: code-rabbit@vger.kernel.org
"Undefined behavior" is a lie, and you know it. Stop throwing around terms you don't understand.
Line 24 claims that using TxId(0) causes "undefined behavior." That's categorically false. In Rust, undefined behavior means memory unsafety—dereferencing invalid pointers, data races, breaking aliasing rules. Using a zero transaction ID won't corrupt memory or summon nasal demons. It might cause your engine to panic or return an error, but that's not undefined behavior.
You're conflating "unspecified behavior" (implementation-defined) with "undefined behavior" (memory-unsafe). This is dangerous because:
- It misleads developers into thinking this is a memory-safety boundary (it's not).
- It contradicts line 14, which says "may be rejected." So which is it—UB or rejection?
Even worse, you document that zero is invalid but then accept any u64 without validation. If zero is truly forbidden, why isn't from_raw doing debug_assert_ne!(value, 0) or providing a try_from_raw that returns Option<TxId> or Result<TxId, InvalidTxId>?
Fix the terminology and either validate or clarify:
/// Constructs a `TxId` from a raw `u64` value.
///
- /// # Safety Note
- /// Callers must not construct `TxId(0)` as it is reserved as invalid.
- /// Using an invalid `TxId` with engine operations results in undefined behavior.
+ /// # Panics
+ /// In debug builds, panics if `value` is zero (reserved as invalid).
+ ///
+ /// # Notes
+ /// External callers must not pass zero. Using `TxId(0)` with engine operations
+ /// will panic or return an error (behavior is implementation-defined, not memory-unsafe).
#[must_use]
pub const fn from_raw(value: u64) -> Self {
+ debug_assert!(value != 0, "TxId(0) is reserved as invalid");
Self(value)
}Or, if you want to be safe and explicit:
/// Constructs a `TxId` from a raw `u64` value.
///
/// Returns `None` if `value` is zero (reserved as invalid).
#[must_use]
pub const fn try_from_raw(value: u64) -> Option<Self> {
if value == 0 {
None
} else {
Some(Self(value))
}
}
/// Constructs a `TxId` from a raw `u64` value without validation.
///
/// # Panics
/// Panics if `value` is zero in debug builds.
///
/// # Notes
/// Prefer [`try_from_raw`](Self::try_from_raw) for validated construction.
/// Using `TxId(0)` with engine operations will panic or error (not memory-unsafe).
#[must_use]
pub const fn from_raw_unchecked(value: u64) -> Self {
debug_assert!(value != 0, "TxId(0) is reserved as invalid");
Self(value)
}Pick one. Ship the current version and you'll get CVE requests from confused security researchers who think you're admitting to memory corruption. BunBun
🤖 Prompt for AI Agents
In crates/rmg-core/src/tx.rs around lines 20–28, the doc comment wrongly uses
"undefined behavior" and the constructor accepts any u64 without validation; fix
by (1) changing the docs to state that TxId(0) is reserved/invalid and that
using it may cause panics or errors (not undefined behavior), and (2) add a safe
constructor try_from_raw(value: u64) -> Option<TxId> that returns None for 0 and
a separate unchecked constructor from_raw_unchecked(value: u64) that keeps the
existing behavior but includes debug_assert!(value != 0) and updated docs to
prefer try_from_raw for validated construction.
…aragraph in pack_port_key docs
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com> Signed-off-by: James Ross <james@flyingrobots.dev>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com> Signed-off-by: James Ross <james@flyingrobots.dev>
Extracted from closed PR #6 to reduce scope.\n\nScope\n- rmg-core math modules (Vec3/Mat4/Quat/PRNG) + tests\n- Engine spike: Engine/TxId/Snapshot + demo motion + tests\n\nNotes\n- Intends to document snapshot hash determinism (ordering + byte encoding) in a follow-up commit within this PR.\n- No geometry/docs changes here.\n- CI strict lints remain; we will iterate within this PR to green.\n\nRationale\nSplit along domain seams for focused review and to de-risk determinism changes.