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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.
87 lines
2.1 KiB
Plaintext
87 lines
2.1 KiB
Plaintext
;; lib/minikanren/tests/condu.sx — Phase 2 piece D tests for `onceo` and `condu`.
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;; --- onceo: at most one answer ---
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(mk-test
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"onceo-single-success-passes-through"
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(let
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((q (mk-var "q")))
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(let
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((res (stream-take 5 ((onceo (== q 7)) empty-s))))
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(map (fn (s) (mk-walk q s)) res)))
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(list 7))
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(mk-test
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"onceo-multi-success-trimmed-to-one"
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(let
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((q (mk-var "q")))
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(let
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((res (stream-take 5 ((onceo (mk-disj (== q 1) (== q 2) (== q 3))) empty-s))))
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(map (fn (s) (mk-walk q s)) res)))
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(list 1))
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(mk-test
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"onceo-failure-stays-failure"
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((onceo (== 1 2)) empty-s)
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(list))
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(mk-test
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"onceo-conde-trimmed"
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(let
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((q (mk-var "q")))
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(let
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((res (stream-take 5 ((onceo (conde ((== q "a")) ((== q "b")))) empty-s))))
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(map (fn (s) (mk-walk q s)) res)))
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(list "a"))
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;; --- condu: first clause with successful head wins ---
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(mk-test
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"condu-first-clause-wins"
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(let
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((q (mk-var "q")))
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(let
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((res (stream-take 10 ((condu ((== q 1)) ((== q 2))) empty-s))))
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(map (fn (s) (mk-walk q s)) res)))
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(list 1))
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(mk-test
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"condu-skips-failing-head"
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(let
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((q (mk-var "q")))
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(let
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((res (stream-take 10 ((condu ((== 1 2)) ((== q 100)) ((== q 200))) empty-s))))
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(map (fn (s) (mk-walk q s)) res)))
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(list 100))
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(mk-test
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"condu-all-fail-empty"
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((condu ((== 1 2)) ((== 3 4)))
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empty-s)
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(list))
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(mk-test "condu-empty-clauses-fail" ((condu) empty-s) (list))
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;; --- condu commits head's first answer; rest-goals can still backtrack
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;; within that committed substitution but cannot revisit other heads. ---
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(mk-test
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"condu-head-onceo-rest-runs"
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(let
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((q (mk-var "q")) (r (mk-var "r")))
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(let
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((res (stream-take 10 ((condu ((mk-disj (== q 1) (== q 2)) (== r 99))) empty-s))))
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(map (fn (s) (list (mk-walk q s) (mk-walk r s))) res)))
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(list (list 1 99)))
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(mk-test
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"condu-rest-goals-can-fail-the-clause"
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(let
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((q (mk-var "q")))
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(let
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((res (stream-take 10 ((condu ((== q 1) (== 2 3)) ((== q 99))) empty-s))))
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(map (fn (s) (mk-walk q s)) res)))
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(list))
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(mk-tests-run!)
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