giles
57a84b372d
Some checks failed
Test, Build, and Deploy / test-build-deploy (push) Failing after 57s
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.
91 lines
2.2 KiB
Plaintext
91 lines
2.2 KiB
Plaintext
;; lib/minikanren/tests/rdb.sx — relational database queries.
|
|
;;
|
|
;; Demonstrates how miniKanren can serve as a Datalog-style query engine
|
|
;; over fact tables. Tables are SX lists of tuples; the relation just
|
|
;; wraps `membero` over the table.
|
|
|
|
(define
|
|
rdb-employees
|
|
(list
|
|
(list "alice" "engineering" 100000)
|
|
(list "bob" "marketing" 80000)
|
|
(list "carol" "engineering" 90000)
|
|
(list "dave" "engineering" 85000)
|
|
(list "eve" "sales" 75000)))
|
|
|
|
(define
|
|
rdb-projects
|
|
(list
|
|
(list "alice" "compiler")
|
|
(list "carol" "compiler")
|
|
(list "dave" "runtime")
|
|
(list "alice" "runtime")
|
|
(list "eve" "outreach")))
|
|
|
|
;; Relation views over the tables.
|
|
|
|
(define
|
|
employees
|
|
(fn (name dept salary) (membero (list name dept salary) rdb-employees)))
|
|
|
|
(define
|
|
on-project
|
|
(fn (name project) (membero (list name project) rdb-projects)))
|
|
|
|
;; --- queries ---
|
|
|
|
(mk-test
|
|
"rdb-engineering-staff"
|
|
(let
|
|
((res (run* q (fresh (n s) (employees n "engineering" s) (== q n)))))
|
|
(and
|
|
(= (len res) 3)
|
|
(and
|
|
(some (fn (n) (= n "alice")) res)
|
|
(and
|
|
(some (fn (n) (= n "carol")) res)
|
|
(some (fn (n) (= n "dave")) res)))))
|
|
true)
|
|
|
|
(mk-test
|
|
"rdb-high-salary"
|
|
(let
|
|
((res (run* q (fresh (n d s) (employees n d s) (lto-i 85000 s) (== q (list n s))))))
|
|
(and
|
|
(= (len res) 2)
|
|
(and
|
|
(some (fn (r) (= r (list "alice" 100000))) res)
|
|
(some (fn (r) (= r (list "carol" 90000))) res))))
|
|
true)
|
|
|
|
(mk-test
|
|
"rdb-join-employee-project"
|
|
(let
|
|
((res (run* q (fresh (n d s) (employees n d s) (on-project n "compiler") (== q n)))))
|
|
(and
|
|
(= (len res) 2)
|
|
(and
|
|
(some (fn (n) (= n "alice")) res)
|
|
(some (fn (n) (= n "carol")) res))))
|
|
true)
|
|
|
|
(mk-test
|
|
"rdb-engineers-on-runtime"
|
|
(let
|
|
((res (run* q (fresh (n s) (employees n "engineering" s) (on-project n "runtime") (== q n)))))
|
|
(and
|
|
(= (len res) 2)
|
|
(and
|
|
(some (fn (n) (= n "alice")) res)
|
|
(some (fn (n) (= n "dave")) res))))
|
|
true)
|
|
|
|
(mk-test
|
|
"rdb-people-on-multiple-projects"
|
|
(let
|
|
((res (run* q (fresh (n p1 p2) (on-project n p1) (on-project n p2) (nafc (== p1 p2)) (== q n)))))
|
|
(some (fn (n) (= n "alice")) res))
|
|
true)
|
|
|
|
(mk-tests-run!)
|