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Squash merge of 76 commits from loops/minikanren. Adds lib/minikanren/ — a complete miniKanren-on-SX implementation built on top of lib/guest/match.sx, validating the lib-guest unify-and-match kit as intended. Modules (20 .sx files, ~1700 LOC): unify, stream, goals, fresh, conde, condu, conda, run, relations, peano, intarith, project, nafc, matche, fd, queens, defrel, clpfd, tabling Phases 1–5 fully done (core miniKanren API, all classic relations, matche, conda, project, nafc). Phase 6 — native CLP(FD): domain primitives, fd-in / fd-eq / fd-neq / fd-lt / fd-lte / fd-plus / fd-times / fd-distinct / fd-label, with constraint reactivation iterating to fixed point. N-queens via FD: 4-queens 2 solutions, 5-queens 10 solutions (vs naive timeout past N=4). Phase 7 — naive ground-arg tabling: table-1 / table-2 / table-3. Fibonacci canary: tab-fib(25) = 75025 in seconds, naive fib(25) times out at 60s. Ackermann via table-3: A(3,3) = 61. 71 test files, 644+ tests passing across the suite. Producer/consumer SLG (cyclic patho, mutual recursion) deferred — research-grade work. The lib-guest validation experiment is conclusive: lib/minikanren/ unify.sx adds ~50 lines of local logic (custom cfg, deep walk*, fresh counter) over lib/guest/match.sx's ~100-line kit. The kit earns its keep ~3× by line count.
46 lines
923 B
Plaintext
46 lines
923 B
Plaintext
;; lib/minikanren/tests/queens.sx — N-queens, the classic miniKanren benchmark.
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;; --- safe-diag (helper) ---
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(mk-test
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"safe-diag-different-cols-different-distance"
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(run* q (safe-diag 1 4 2))
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(list (make-symbol "_.0")))
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(mk-test
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"safe-diag-same-distance-fails"
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(run* q (safe-diag 1 4 3))
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(list))
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(mk-test
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"safe-diag-same-distance-other-direction-fails"
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(run* q (safe-diag 4 1 3))
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(list))
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;; --- ino-each / range ---
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(mk-test
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"range-1-to-4"
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(range-1-to-n 4)
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(list 1 2 3 4))
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(mk-test "range-empty" (range-1-to-n 0) (list))
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;; --- 4-queens: two solutions ---
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(mk-test
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"queens-4"
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(let
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((sols (run* q (fresh (a b c d) (== q (list a b c d)) (queens-cols (list a b c d) 4)))))
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(and
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(= (len sols) 2)
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(and
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(some
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(fn (s) (= s (list 2 4 1 3)))
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sols)
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(some
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(fn (s) (= s (list 3 1 4 2)))
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sols))))
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true)
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(mk-tests-run!)
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