* fix(cobol): a file ending inside the sequence area no longer hangs the parser
The vendored COBOL grammar's external scanner skips the fixed-format
sequence area (columns 1-6) with `while (get_column() <= 5) advance()`.
At end of input advance() is a no-op, so a file whose last line stops in
that area (` .`, `X\n .`, a sentence closed by a short ` .` line)
never reached column 7 and the scanner spun forever inside wasm. Indexing
hit the parse worker's hard timeout three times (~93 s) and stored the
file with zero symbols; the viewer's highlighter froze on the same text.
The loop now also stops at eof(). It is upstream code (present at
e99dbdc3), so the change is a standalone upstreamable fix; inputs that
parsed before are unaffected (412 NIST + ocesql test sources give
byte-identical trees with the old and new wasm, and the upstream corpus
keeps its single pre-existing failure).
Regenerates docs/grammars/tree-sitter-cobol.patch, rebuilds the wasm per
docs/grammars/tree-sitter-cobol.md, and adds an out-of-process regression
test under a hard deadline (a regression is an uninterruptible wasm loop).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* test(viewer): force the highlight deadline instead of relying on a grammar bug
The bounded-highlight test used the COBOL ` .` slice as its slice that
never finishes; the grammar fix makes it parse, so the deadline is now
forced through tokenizeBounded's deadline parameter.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Programs, sections/paragraphs (reconstructed extents over the grammar's
flat header stream), PERFORM/THRU/GO TO/CALL call edges, COPY copybook
imports incl. standalone .cpy fragments, DATA DIVISION records/fields/
88-levels with write-site impact references, and CICS flows: EXEC
LINK/XCTL program targets (literal + same-file VALUE deref), EXEC SQL
INCLUDE, and pseudo-conversational RETURN/START TRANSID hops resolved
to the owning program via a CICS framework resolver. Fixed and free
source format (free format via a scanner wide-mode sentinel).
Grammar: vendored wasm built from a patched yutaro-sakamoto/
tree-sitter-cobol (EXEC blocks as an external-scanner token, copybook
fragment entry point, single-quote continuation, COPY REPLACING
pseudo-text, NOT=, CALL GIVING, ENTRY, FREE, bitwise ops, abbreviated
relations, COBOL-2002 usages, and more). Patch + provenance + upstream
PR draft in docs/grammars/. Parse health: AWS CardDemo 43/44 native
(upstream: 9/31), 44/44 through preParse; copybooks 28/29; CobolCraft
free-format 17/17 (upstream: 0); NIST COBOL85 unchanged at 373/382.
Copybook members resolve to files like C includes (basename index,
name-matcher short-circuit so compiler-supplied members stay honestly
unresolved): CardDemo imports 5 -> 285. Impact proof: ACCT-CURR-BAL
(CVACT01Y copybook) surfaces its 4 writer programs cross-file.
Also: run-all.sh now neutralizes the ambient prompt-hook in both A/B
arms (CODEGRAPH_NO_PROMPT_HOOK=1); COBOL corpus entries for agent-eval.
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
