Task #5 step 2. The fuse-then-link refactor (#1364) left the extraction
sweep as a clean per-file boundary: raw text in → collected facts out.
This ports that sweep to the native kernel: `cfnptr_scan_files`
(codegraph-kernel/src/cfnptr.rs) strips and scans a batch of 16 files
per NAPI call, and the TS side only reads files, ships batches, interns
the returned facts, and resolves include paths. The JS sweep remains as
the fallback (no binary, feature detection against older binaries,
CODEGRAPH_KERNEL=0, or CODEGRAPH_KERNEL_CFNPTR=0).
Parity discipline: the JS regexes are the spec, so the scanners are
hand-rolled byte machines reproducing that engine — ASCII \w/\b next to
UNICODE \s (NBSP/U+2000-200A/FEFF decoded from UTF-8), alternation
order, lastIndex resume, and the observable backtracking dimensions
(INIT/ARRAY modifier and struct/star/bracket optionals, DISPATCH's
greedy segment loop); greedy shortcuts only where backtracking provably
can't rescue a match. The native stripper blanks per UTF-16 code unit,
so its output is string-identical to the TS stripper — pinned by a new
kernel arm on the strip differential oracle (fixtures + 500 seeded
random cases).
Gates, all green: new differential suite (adversarial fixture project —
CRLF, NBSP, continuations, decoy strings, unterminated comments,
backtracking shapes — indexed native-vs-JS: identical edge streams,
plus a record-level scanner check); repo differential on
git/redis/vim/SameBoy (identical, 705/852/433/180 edges); probe-hash on
the live linux kernel DB reproduced f6e1713d… (279,335 rows); linux
init counts exact 2,049,153/6,413,518; dump sha 6dd1185b… reproduced
(10,446,478 lines); full suite green ×2 (153 files / 2588 tests).
Measured (8c cg1212, quiet host): cFnPtr sub A=47.9s B=1.1 C=40.9
D=24.1 E=36.8 = 150.9s vs step 1's 179s and the pre-arc 230s (−34%
cumulative); the sweep itself halved (94.5→47.9s, JS strips
132.4k→68.9k). callback-synthesis phase 199.9→171.1s. E's attributed
wall grew from overlap shift under parallel synthesis; the phase total
is the honest number. Full record: plan §7a.10.
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Three measurements before any port. The stripCStyle split('') rewrite
(byte-identical segment-builder) measured 1.0× on 15.1M chars of linux C
— V8's ~73MB/s scan rate IS the cost, and 78s ≈ 4 strips/file × that
rate: the lever is the redundancy, not the scanner. Rewrite reverted;
the differential oracle test ships so any future rewrite stays pinned
byte-identical. E's regexes alone run at ~46MB/s (~30s of its 95s; the
rest is per-match logic and slicing).
Re-ordered attack recorded in §7a.8: step 1 = TS fuse-then-link refactor
(strip once per file, collect raw matches + declared-type tables,
text-free global linking; ≈ −70-90s, parity via collector insertion
order + the §7a.4 probe-hash gate); step 2 = native per-file extractor
behind the same boundary (raw disk text — no preParse interaction).
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
