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datalog: db + naive eval + safety analysis (Phase 3, 87/87)
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db.sx: facts indexed by relation name, rules list, dl-add-fact!
(rejects non-ground), dl-add-rule! (rejects unsafe — head vars
not in positive body). eval.sx: dl-saturate! fixpoint, dl-query
with deduped projected results. Negation and arithmetic raise
clear errors (Phase 4/7 to follow). 15 eval tests: transitive
closure, sibling, same-gen, grandparent, cyclic reach, safety.
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giles
2026-05-07 23:41:27 +00:00
parent 8046df7ce5
commit 9bc70fd2a9
7 changed files with 663 additions and 14 deletions
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lib/datalog/scoreboard.md
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@@ -1,9 +1,10 @@
# datalog scoreboard
**72 / 72 passing** (0 failure(s)).
**87 / 87 passing** (0 failure(s)).
| Suite | Passed | Total | Status |
|-------|--------|-------|--------|
| tokenize | 26 | 26 | ok |
| parse | 18 | 18 | ok |
| unify | 28 | 28 | ok |
| eval | 15 | 15 | ok |