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Implement nested named repeats, remove mismatch name tests for now

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This commit is contained in:
Max New 2013-11-06 22:42:13 -06:00
parent 3b64ee8c81
commit 707bd5f20d
3 changed files with 31 additions and 30 deletions
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45
pkgs/redex-pkgs/redex-lib/redex/private/env.rkt
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@ -3,7 +3,7 @@
(provide (struct-out env) (provide (struct-out env)
empty-env empty-env
add-name add-name
add-nrep pure-nrep
env-union env-union
(struct-out t-env) (struct-out t-env)
t-env-name-ref t-env-name-ref
@ -36,23 +36,18 @@
(define update identity) (define update identity)
(env (hash-update names n update default) nreps)]) (env (hash-update names n update default) nreps)])
(: add-nrep : Env Symbol Env Tag Pattern -> Env) (: pure-nrep : Symbol Env Tag Pattern -> Env)
(define/match (add-nrep e n repnv tag pat) (define (pure-nrep n repnv tag pat)
[((env names nreps) _ _ _ _) (: nreps : (HashTable Symbol (Pairof Env (Tagged Pattern))))
(: update-nreps : (Pairof Env (Tagged Pattern)) -> (Pairof Env (Tagged Pattern))) (define nreps
(define/match (update-nreps e-t) (hash-set (ann (hash) (HashTable Symbol (Pairof Env (Tagged Pattern))))
[((cons nv tagged)) n
(cons (env-union nv repnv) (cons repnv
(hash-set tagged tag pat))]) (hash-set (ann (hash) (Tagged Pattern))
(: default : (-> (Pairof Env (Tagged Pattern)))) tag
(define (default) pat))))
(: tagged : (Tagged Pattern)) (env (hash)
(define tagged (hash-set (ann (hash) (Tagged Pattern)) nreps))
tag pat))
(cons repnv tagged))
(env names
(hash-update nreps n update-nreps default
))])
(: t-env-name-ref : TEnv Symbol -> Pattern) (: t-env-name-ref : TEnv Symbol -> Pattern)
(define/match (t-env-name-ref e n) (define/match (t-env-name-ref e n)
@ -71,12 +66,12 @@
(define names-union (define names-union
(hash-union ns1 (hash-union ns1
ns2 ns2
(λ (v1 v2) v1))) (λ (_ v1 v2) v1)))
(: combo : (Pairof Env (Tagged Pattern)) (Pairof Env (Tagged Pattern)) -> (Pairof Env (Tagged Pattern))) (: combo : Symbol (Pairof Env (Tagged Pattern)) (Pairof Env (Tagged Pattern)) -> (Pairof Env (Tagged Pattern)))
(define/match (combo e-t1 e-t2) (define/match (combo _ e-t1 e-t2)
[((cons nv1 t1) (cons nv2 t2)) [(_ (cons nv1 t1) (cons nv2 t2))
(cons (env-union nv1 nv2) (cons (env-union nv1 nv2)
(hash-union t1 t2 (λ (_1 _2) (error "2 tags should never collide"))))]) (hash-union t1 t2 (λ (t _1 _2) (error (format "2 tags should never collide, but these did: ~s, ~s with tag: ~s in envs ~s and ~s" _1 _2 t e1 e2)))))])
(define nreps-union (define nreps-union
(hash-union rs1 rs2 combo)) (hash-union rs1 rs2 combo))
(env names-union nreps-union)]) (env names-union nreps-union)])
@ -85,7 +80,7 @@
(define (key-set m) (define (key-set m)
(list->set (hash-keys m))) (list->set (hash-keys m)))
(: hash-union : (All (k v) (HashTable k v) (HashTable k v) (v v -> v) -> (HashTable k v))) (: hash-union : (All (k v) (HashTable k v) (HashTable k v) (k v v -> v) -> (HashTable k v)))
(define (hash-union m1 m2 combo) (define (hash-union m1 m2 combo)
(: ks1 : (Setof k)) (: ks1 : (Setof k))
(: ks2 : (Setof k)) (: ks2 : (Setof k))
@ -98,6 +93,6 @@
(define v2 (hash-ref m2 k (thunk #f))) (define v2 (hash-ref m2 k (thunk #f)))
(define v (define v
(cond [(and v1 v2) (cond [(and v1 v2)
(combo v1 v2)] (combo k v1 v2)]
[else (or v1 v2 (error "absurd"))])) [else (or v1 v2 (error "absurd"))]))
(values k v))) (values k v)))

5
pkgs/redex-pkgs/redex-lib/redex/private/preprocess-pat.rkt
View File

@ -50,15 +50,14 @@
[`(repeat ,p #f #f) [`(repeat ,p #f #f)
(ann-pat empty-env sub-pat)] (ann-pat empty-env sub-pat)]
[`(repeat ,p ,n #f) [`(repeat ,p ,n #f)
(match-define (ann-pat subenv _) (match-define (ann-pat subenv subp)
(walk p)) (walk p))
(define tag (get-and-inc!)) (define tag (get-and-inc!))
(ann-pat (add-nrep empty-env n subenv tag p) (ann-pat (pure-nrep n subenv tag subp)
`(repeat ,tag ,n #f))] `(repeat ,tag ,n #f))]
[`(repeat ,p ,n ,m) [`(repeat ,p ,n ,m)
(unimplemented (format "mismatch repeat (..._!_): ~s ~s" n m))] (unimplemented (format "mismatch repeat (..._!_): ~s ~s" n m))]
[_ (walk sub-pat)]))) [_ (walk sub-pat)])))
(define list-env (define list-env
(for/fold ([accenv empty-env]) (for/fold ([accenv empty-env])
([sub-apat (in-list ann-sub-pats)]) ([sub-apat (in-list ann-sub-pats)])

11
pkgs/redex-pkgs/redex-test/redex/tests/enum-test.rkt
View File

@ -86,7 +86,8 @@
(p (number_!_1 number_!_1)) (p (number_!_1 number_!_1))
(n (p_!_1 p_!_1)) (n (p_!_1 p_!_1))
(x number)) (x number))
;; Mismatch isn't working for now, will come back to this.
#;#;#;
(try-it 100 M m) (try-it 100 M m)
(try-it 100 M n) (try-it 100 M n)
(try-it 100 M p) (try-it 100 M p)
@ -98,14 +99,20 @@
(try-it 20 VarMentioned var) (try-it 20 VarMentioned var)
;; Named repeats
(define-language NRep (define-language NRep
(v (natural ..._1 natural ..._1)) (v (natural ..._1 natural ..._1))
(v2 (v ..._1 v ..._2 v ..._1 v ..._2)) (v2 (v ..._1 v ..._2 v ..._1 v ..._2))
(v3 (natural_1 ..._1 natural_1 ..._1))) (v3 (natural_1 ..._1 natural_1 ..._1))
(v4 (((natural_1 #t) ..._1) ..._2 ((#f natural_1) ..._1) ..._2))
;; The motherlode
(v5 ((string_7 (((natural_1 variable_2) ..._1 any_3) ..._2)) ..._3 (((any_3 (variable_2 natural_1) ..._1) ..._2) string_7) ..._3)))
(try-it 100 NRep v) (try-it 100 NRep v)
(try-it 100 NRep v2) (try-it 100 NRep v2)
(try-it 100 NRep v3) (try-it 100 NRep v3)
(try-it 100 NRep v4)
(try-it 100 NRep v5)
;; Test production sort ;; Test production sort
(define-language rec (define-language rec