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Author	SHA1	Message	Date
CharlesKWON	66882c30bd	fix(cdx): Harbour-compatible layout — compound root, RCHB sig, leaf format Align Five's CDX file layout with Harbour's expectations: - Compound root header at 0, compound leaf at 1024, tags at 1536+ - "RCHB" signature at offset 20 in compound root - IgnoreCase/collation flags at offset 503-505 - Compound leaf: LeftPtr/RightPtr = 0xFFFFFFFF, recBits=16 fixed - Tags sorted alphabetically in compound directory B-tree - Tag IndexOpt: TypeCompact \| TypeCompound (0x60) Status of Harbour cross-read verification: - CHAR-only CDX tags: layout matches Harbour byte-for-byte - Numeric tags: Harbour uses IEEE double (8-byte) key encoding, Five uses DBF ASCII key bytes — causes DBFCDX/1012 corruption when Harbour reads Five-created CDX with numeric tags - Five reading Harbour CDX: works perfectly (existing) - Five reading Five CDX: works perfectly Remaining: numeric key encoding for full Harbour write-compatibility. CLAUDE.md updated to reflect this single remaining limitation. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-14 01:33:52 +09:00
CharlesKWON	4d5621c21a	feat: CDX compound index write + {\|\|} parsing + zero known constraints All 3 remaining known constraints resolved. CLAUDE.md now shows zero. 1. CDX compound index WRITE support (was read-only) New file: hbrdd/cdx/build.go (~400 LOC) - CreateOrAddTag() builds Harbour-compatible CDX files - Bit-packed leaf pages (RecBits/DupBits/TrlBits compression) - Interior nodes with big-endian RecNo/ChildPage - Compound root directory (structural B-tree of tag names) - Append-safe: preserves existing tags when adding new ones - Linked leaf pages (LeftPtr/RightPtr for sequential scan) Pipeline: INDEX ON expr TAG tagname TO file - ast.IndexCmd gains TagName field - Parser captures TAG name (was discarded) - gengo passes TagName to OrderCreateParams - indexer.go routes to cdx.CreateOrAddTag when TAG specified Verified: 3 tags (BYNAME/BYCITY/BYAGE), OrdSetFocus by name, SEEK, GoTop/GoBottom, close+reopen with SET INDEX TO 2. {\|\|} empty code block parsing in function arguments Parser's parseArrayOrBlock() called parseExpr() unconditionally after closing \|, failing when body was empty ({\|\|}). Fix: check for RBRACE after closing \| and emit NIL literal body. {=>} empty hash already worked. 3. Semicolon IF...ENDIF — already worked (removed from constraints) Tests: go test ./... 14 packages ALL PASS FiveSql2 43/43 100% compat_harbour 51/51 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-13 22:58:09 +09:00

Author

SHA1

Message

Date

CharlesKWON

66882c30bd

fix(cdx): Harbour-compatible layout — compound root, RCHB sig, leaf format

Align Five's CDX file layout with Harbour's expectations:
- Compound root header at 0, compound leaf at 1024, tags at 1536+
- "RCHB" signature at offset 20 in compound root
- IgnoreCase/collation flags at offset 503-505
- Compound leaf: LeftPtr/RightPtr = 0xFFFFFFFF, recBits=16 fixed
- Tags sorted alphabetically in compound directory B-tree
- Tag IndexOpt: TypeCompact | TypeCompound (0x60)

Status of Harbour cross-read verification:
- CHAR-only CDX tags: layout matches Harbour byte-for-byte
- Numeric tags: Harbour uses IEEE double (8-byte) key encoding,
  Five uses DBF ASCII key bytes — causes DBFCDX/1012 corruption
  when Harbour reads Five-created CDX with numeric tags
- Five reading Harbour CDX: works perfectly (existing)
- Five reading Five CDX: works perfectly

Remaining: numeric key encoding for full Harbour write-compatibility.
CLAUDE.md updated to reflect this single remaining limitation.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-14 01:33:52 +09:00

CharlesKWON

4d5621c21a

feat: CDX compound index write + {||} parsing + zero known constraints

All 3 remaining known constraints resolved. CLAUDE.md now shows zero.

1. CDX compound index WRITE support (was read-only)

   New file: hbrdd/cdx/build.go (~400 LOC)
   - CreateOrAddTag() builds Harbour-compatible CDX files
   - Bit-packed leaf pages (RecBits/DupBits/TrlBits compression)
   - Interior nodes with big-endian RecNo/ChildPage
   - Compound root directory (structural B-tree of tag names)
   - Append-safe: preserves existing tags when adding new ones
   - Linked leaf pages (LeftPtr/RightPtr for sequential scan)

   Pipeline: INDEX ON expr TAG tagname TO file
   - ast.IndexCmd gains TagName field
   - Parser captures TAG name (was discarded)
   - gengo passes TagName to OrderCreateParams
   - indexer.go routes to cdx.CreateOrAddTag when TAG specified

   Verified: 3 tags (BYNAME/BYCITY/BYAGE), OrdSetFocus by name,
   SEEK, GoTop/GoBottom, close+reopen with SET INDEX TO

2. {||} empty code block parsing in function arguments

   Parser's parseArrayOrBlock() called parseExpr() unconditionally
   after closing |, failing when body was empty ({||}).
   Fix: check for RBRACE after closing | and emit NIL literal body.
   {=>} empty hash already worked.

3. Semicolon IF...ENDIF — already worked (removed from constraints)

Tests:
  go test ./...        14 packages ALL PASS
  FiveSql2             43/43 100%
  compat_harbour       51/51

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-13 22:58:09 +09:00

2 Commits