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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.
83 lines
1.6 KiB
Plaintext
83 lines
1.6 KiB
Plaintext
;; lib/minikanren/tests/clpfd-neq.sx — fd-neq with constraint propagation.
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;; --- ground / domain interaction ---
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(mk-test
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"fd-neq-ground-distinct"
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(run*
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q
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(fresh
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(x)
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(fd-neq x 5)
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(fd-in x (list 4 5 6))
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(fd-label (list x))
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(== q x)))
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(list 4 6))
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(mk-test
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"fd-neq-ground-equal-fails"
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(run* q (fresh (x) (== x 5) (fd-neq x 5) (== q x)))
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(list))
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(mk-test
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"fd-neq-symmetric"
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(run*
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q
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(fresh
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(x)
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(fd-neq 7 x)
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(fd-in x (list 5 6 7 8 9))
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(fd-label (list x))
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(== q x)))
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(list 5 6 8 9))
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;; --- two vars with overlapping domains ---
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(mk-test
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"fd-neq-pair-from-3"
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(let
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((res (run* q (fresh (x y) (fd-in x (list 1 2 3)) (fd-in y (list 1 2 3)) (fd-neq x y) (fd-label (list x y)) (== q (list x y))))))
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(= (len res) 6))
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true)
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(mk-test
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"fd-all-distinct-3-of-3"
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(let
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((res (run* q (fresh (a b c) (fd-in a (list 1 2 3)) (fd-in b (list 1 2 3)) (fd-in c (list 1 2 3)) (fd-neq a b) (fd-neq a c) (fd-neq b c) (fd-label (list a b c)) (== q (list a b c))))))
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(= (len res) 6))
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true)
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(mk-test
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"fd-pigeonhole-fails"
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(run*
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q
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(fresh
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(a b c)
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(fd-in a (list 1 2))
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(fd-in b (list 1 2))
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(fd-in c (list 1 2))
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(fd-neq a b)
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(fd-neq a c)
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(fd-neq b c)
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(fd-label (list a b c))
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(== q (list a b c))))
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(list))
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;; --- propagation when one side becomes ground ---
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(mk-test
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"fd-neq-propagates-after-ground"
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(run*
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q
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(fresh
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(x y)
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(fd-in x (list 1 2 3))
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(fd-in y (list 1 2 3))
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(fd-neq x y)
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(== x 2)
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(fd-label (list y))
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(== q y)))
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(list 1 3))
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(mk-tests-run!)
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