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Datalog has no function symbols in argument positions, but the
existing dl-add-fact! / dl-add-rule! validators only checked that
literals were ground (no free variables). A compound like `+(1, 2)`
contains no variables, so:
p(+(1, 2)).
=> stored as the unreduced tuple `(p (+ 1 2))`
double(*(X, 2)) :- n(X). n(3).
=> saturates `double((* 3 2))` instead of `double(6)`
Added dl-simple-term? (number / string / symbol) and an
args-simple? walker, used by:
- dl-add-fact!: all args must be simple terms
- dl-add-rule!: rule head args must be simple terms (variables
are symbols, so they pass)
Compounds remain legal in body literals where they encode `is` /
arithmetic / aggregate sub-goals. Error messages name the offending
literal and point the user at the body-only mechanism.
2 new regression tests; conformance 271/271.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
18 lines
421 B
Markdown
18 lines
421 B
Markdown
# datalog scoreboard
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**271 / 271 passing** (0 failure(s)).
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| Suite | Passed | Total | Status |
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|-------|--------|-------|--------|
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| tokenize | 31 | 31 | ok |
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| parse | 23 | 23 | ok |
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| unify | 29 | 29 | ok |
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| eval | 42 | 42 | ok |
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| builtins | 26 | 26 | ok |
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| semi_naive | 8 | 8 | ok |
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| negation | 10 | 10 | ok |
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| aggregates | 23 | 23 | ok |
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| api | 22 | 22 | ok |
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| magic | 36 | 36 | ok |
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| demo | 21 | 21 | ok |
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