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rose-ash/lib/datalog/scoreboard.md
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datalog: rule-shape validators in dl-add-rule! (253/253)
Two malformed-rule paths used to slip through:

- Empty head list `{:head () :body ()}` was accepted; the rule
  would never fire but the relation-name lookup later returned
  nil with confusing downstream errors.
- Non-list body (`{:head (...) :body 42}`) crashed in `rest`
  during safety check with a cryptic "rest: 1 list arg".

dl-add-rule! now checks head shape (non-empty list with symbol
head) and body type (list) before any safety walk. Errors are
descriptive and surface at add time rather than during the next
saturation.

2 new eval tests.
2026-05-10 21:09:33 +00:00

421 B

datalog scoreboard

253 / 253 passing (0 failure(s)).

Suite Passed Total Status
tokenize 29 29 ok
parse 22 22 ok
unify 28 28 ok
eval 38 38 ok
builtins 23 23 ok
semi_naive 8 8 ok
negation 10 10 ok
aggregates 20 20 ok
api 20 20 ok
magic 34 34 ok
demo 21 21 ok