Commit Graph
9 Commits
Author SHA1 Message Date
swaitsandClaude Opus 4.6 aa09783cdd test: 100% mutation kill rate, cargo-mutants v27, #[mutants::skip] (0.3.2)
89 mutants tested: 59 caught, 30 unviable (type system rejects them),
0 missed. Added mutants dev-dep for #[mutants::skip] on legacy-msrv
dead code. Upgraded cargo-mutants to v27.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-01 10:19:20 -06:00
swaitsandClaude Opus 4.6 b91fbb2ed9 test: mutation testing, block boundary tests, exact-fit decode tests (0.3.2)
Added cargo-mutants with 88 mutants tested, 59 caught, 0 missed. Added
targeted tests for 254-byte block boundary encoding (interop-verified)
and exact-fit/too-small decode buffer sizing for the batch zero path.
111 tests total (was 106).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-31 22:12:40 -06:00
swaitsandClaude Opus 4.6 777a37d4cd perf: decode rewrite, encode zeros optimization, iai-callgrind benchmarks (0.3.1)
Decode rewritten with shrinking-slice pattern (split_first/split_at)
instead of index arithmetic. Decode zeros 14% faster, decode nonzero
flips from 5% behind corncobs to 2% ahead, decode mixed closes to tied.

Encode zeros fast path moved before split_at — now tied with cobs
(was 6% behind). Code size reduced to 821B (was 869B).

Replaced criterion with iai-callgrind for deterministic instruction-count
benchmarks via Valgrind. Zero run-to-run variance. Expanded to 162
benchmarks across 9 sizes.

ucobs now wins or ties 16 of 18 benchmarks vs corncobs and cobs.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-31 21:43:06 -06:00
swaitsandClaude Opus 4.6 ff883d6f8e docs: update README benchmarks with fresh 7840U numbers and emoji indicators
Replace all N100 benchmark data with accurate 7840U results. Add emoji
legend (winner/loser/tie) to every comparison row. Update crate property
table, machine description, and recommendation prose to reflect current
competitive picture.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-31 16:30:05 -06:00
swaitsandClaude Opus 4.6 63ebaa0232 docs: document legacy-msrv feature in README and crate docs
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-31 00:39:48 -06:00
swaitsandClaude Opus 4.6 3d674989ab feat: const fn encode, decode optimization, comprehensive docs and examples
- Make `encode` const fn for compile-time COBS encoding (MSRV bumped to 1.83)
- Optimize decode by removing unnecessary branch in inner loop
- Add comprehensive rustdoc with examples for every function
- Add crate-level doc sections: quick start, buffer sizing, framing,
  stream parsing, compile-time encoding, error handling
- Expand README with decision matrix, examples section, testing depth
- Bump version to 0.2.0

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-30 18:31:41 -06:00
swaitsandClaude Opus 4.6 531f5311d8 docs: update README to use just commands instead of cargo
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-30 17:23:25 -06:00
swaitsandClaude Opus 4.6 a5e3e5f63b feat: add benchmarks, justfile, optimize throughput, harden quality gates
Benchmarking & comparison:
- Add criterion benchmarks (ucobs vs cobs 0.3 vs corncobs 0.1)
- Add Python cobs benchmark script
- Add performance comparison section to README with full results

Performance:
- Rewrite encode to scan-and-bulk-copy via copy_from_slice
- Rewrite decode to bulk-copy via copy_from_slice
- ~2-4x throughput improvement; now matches corncobs on most workloads

Quality hardening:
- Add #![forbid(unsafe_code)], #![warn(missing_docs)], #[must_use]
- Add [lints.rust] unsafe_code = "forbid" in Cargo.toml
- Add rust-version (MSRV) = "1.56"
- Add docs.rs metadata
- 106 tests: 80 unit/corpus + 25 property tests (25k cases each = 625k total)
- External test vectors from: Wikipedia, Cheshire & Baker paper, nanocobs,
  cobs-c, cobs2-rs, Jacques Fortier, Python cobs package
- Add fuzz_small_dest fuzz target (encode/decode with undersized buffers)
- Improve doc examples to show sentinel append/strip convention

Infrastructure:
- Add justfile with test (nextest), check, bench, fuzz, miri, fmt targets
- cargo-nextest for parallel test execution
- Update .gitignore for Python cache files

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-30 17:19:12 -06:00
swaitsandClaude Opus 4.6 08063391e8 feat: initial release of ucobs 0.1.0
μCOBS — Consistent Overhead Byte Stuffing encoder/decoder.
no_std, zero-alloc, spec-compliant (Cheshire & Baker 1999).
44 tests + doctests, property-based testing, fuzz targets,
cross-validation against corncobs.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-30 11:26:27 -06:00