add stlc+rec-iso files; rename record files; start exist
- previously forgot to add stlc+rec-iso.rkt and tests
- rename files with records (eg stlc+var, stlc+rec+sub)
- use "reco" to avoid confusion with recursive types ("rec")
- start exist.rkt --- existential types
This commit is contained in:
Stephen Chang
parent
46598499d1
commit
e678912c2c
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@ -6,12 +6,13 @@ A file extends its immediate parent file.
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- stlc+lit.rkt
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- ext-stlc.rkt
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- stlc+tup.rkt
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- stlc+var.rkt
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- stlc+reco+var.rkt
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- stlc+cons.rkt
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- stlc+box.rkt
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- stlc+rec-iso.rkt
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- exist.rkt
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- stlc+sub.rkt
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- stlc+rec+sub.rkt (also pull in tup from stlc+var.rkt)
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- stlc+reco+sub.rkt (also pull in tup from stlc+reco+var.rkt)
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- sysf.rkt
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- fomega.rkt
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- fomega2.rkt
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12
tapl/exist.rkt
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12
tapl/exist.rkt
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@ -0,0 +1,12 @@
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#lang racket/base
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(require "typecheck.rkt")
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(require (except-in "stlc+reco+var.rkt" #%app λ)
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(prefix-in stlc: (only-in "stlc+reco+var.rkt" #%app λ)))
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(provide (rename-out [stlc:#%app #%app] [stlc:λ λ]))
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(provide (except-out (all-from-out "stlc+reco+var.rkt") stlc:#%app stlc:λ))
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;; existential types
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;; Types:
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;; - types from stlc+reco+var.rkt
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;; Terms:
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;; - terms from stlc+reco+var.rkt
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@ -1,17 +1,17 @@
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#lang racket/base
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(require "typecheck.rkt")
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(require (prefix-in stlc: (only-in "stlc+var.rkt" #%app))
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(except-in "stlc+var.rkt" #%app))
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(require (prefix-in stlc: (only-in "stlc+reco+var.rkt" #%app))
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(except-in "stlc+reco+var.rkt" #%app))
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(provide (rename-out [stlc:#%app #%app] [cons/tc cons]))
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(provide (except-out (all-from-out "stlc+var.rkt") stlc:#%app))
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(provide (except-out (all-from-out "stlc+reco+var.rkt") stlc:#%app))
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(provide nil isnil head tail)
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;; Simply-Typed Lambda Calculus, plus cons
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;; Types:
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;; - types from stlc+var.rkt
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;; - types from stlc+reco+var.rkt
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;; - List constructor
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;; Terms:
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;; - terms from stlc+var.rkt
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;; - terms from stlc+reco+var.rkt
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;; TODO: enable HO use of list primitives
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52
tapl/stlc+rec-iso.rkt
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52
tapl/stlc+rec-iso.rkt
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@ -0,0 +1,52 @@
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#lang racket/base
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(require "typecheck.rkt")
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(require (prefix-in stlc: (only-in "stlc+reco+var.rkt" #%app λ type=?))
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(except-in "stlc+reco+var.rkt" #%app λ type=?))
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(provide (rename-out [stlc:#%app #%app] [stlc:λ λ]))
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(provide (except-out (all-from-out "stlc+reco+var.rkt")
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stlc:#%app stlc:λ (for-syntax stlc:type=?)))
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(provide μ fld unfld (for-syntax type=?))
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;; stlc + (iso) recursive types
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;; Types:
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;; - types from stlc+reco+var.rkt
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;; - μ
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;; Terms:
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;; - terms from stlc+reco+var.rkt
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;; - fld/unfld
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(begin-for-syntax
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;; extend to handle μ
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(define (type=? τ1 τ2)
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;(printf "(τ=) t1 = ~a\n" #;τ1 (syntax->datum τ1))
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;(printf "(τ=) t2 = ~a\n" #;τ2 (syntax->datum τ2))
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(syntax-parse (list τ1 τ2)
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[(((~literal #%plain-lambda) (x:id ...) k1 ... t1)
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((~literal #%plain-lambda) (y:id ...) k2 ... t2))
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#:when (= (stx-length #'(x ...)) (stx-length #'(y ...)))
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#:with (z ...) (generate-temporaries #'(x ...))
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((current-type=?) (substs #'(z ...) #'(x ...) #'t1)
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(substs #'(z ...) #'(y ...) #'t2))]
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[_ (stlc:type=? τ1 τ2)]))
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(current-type=? type=?)
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(current-typecheck-relation type=?))
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(define-syntax (μ stx)
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(syntax-parse stx
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[(_ (tv:id) τ_body)
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#'(λ (tv) τ_body)]))
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(define-syntax (unfld stx)
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(syntax-parse stx
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[(_ τ:ann e)
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#:with ((~literal #%plain-lambda) (tv:id) τ_body) #'τ.norm
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#:with [e- τ_e] (infer+erase #'e)
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#:when ((current-typecheck-relation) #'τ_e #'τ.norm)
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(⊢ #'e- (subst #'τ.norm #'tv #'τ_body))]))
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(define-syntax (fld stx)
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(syntax-parse stx
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[(_ τ:ann e)
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#:with ((~literal #%plain-lambda) (tv:id) τ_body) #'τ.norm
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#:with [e- τ_e] (infer+erase #'e)
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#:when ((current-typecheck-relation) #'τ_e (subst #'τ.norm #'tv #'τ_body))
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(⊢ #'e- #'τ.norm)]))
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@ -1,15 +1,15 @@
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#lang racket/base
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(require "typecheck.rkt")
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;; want to use type=? and eval-type from stlc+var.rkt, not stlc+sub.rkt
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;; want to use type=? and eval-type from stlc+reco+var.rkt, not stlc+sub.rkt
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(require (except-in "stlc+sub.rkt" #%app #%datum sub? type=? type-eval)
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(prefix-in stlc: (only-in "stlc+sub.rkt" #%app #%datum sub?))
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(except-in "stlc+var.rkt" #%app #%datum +)
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(prefix-in var: (only-in "stlc+var.rkt" #%datum)))
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(except-in "stlc+reco+var.rkt" #%app #%datum +)
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(prefix-in var: (only-in "stlc+reco+var.rkt" #%datum)))
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(provide (rename-out [stlc:#%app #%app]
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[datum/tc #%datum]))
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(provide (except-out (all-from-out "stlc+sub.rkt") stlc:#%app stlc:#%datum
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(for-syntax stlc:sub?))
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(except-out (all-from-out "stlc+var.rkt") var:#%datum))
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(except-out (all-from-out "stlc+reco+var.rkt") var:#%datum))
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(provide (for-syntax sub?))
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;; Simply-Typed Lambda Calculus, plus subtyping, plus records
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@ -11,7 +11,7 @@
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(provide (for-syntax type=?))
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;; Simply-Typed Lambda Calculus, plus variants
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;; Simply-Typed Lambda Calculus, plus records and variants
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;; Type relations:
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;; - type=? extended to strings
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;; define-type-alias (also provided to programmer)
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@ -1,4 +1,4 @@
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#lang s-exp "../stlc+var.rkt"
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#lang s-exp "../exist.rkt"
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(require "rackunit-typechecking.rkt")
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;; define-type-alias
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@ -3,15 +3,16 @@
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(require "stlc+lit-tests.rkt")
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(require "ext-stlc-tests.rkt")
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(require "stlc+tup-tests.rkt")
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(require "stlc+var-tests.rkt")
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(require "stlc+reco+var-tests.rkt")
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(require "stlc+cons-tests.rkt")
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(require "stlc+box-tests.rkt")
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(require "stlc+rec-iso-tests.rkt")
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(require "stlc+sub-tests.rkt")
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(require "stlc+rec+sub-tests.rkt")
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(require "stlc+reco+sub-tests.rkt")
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(require "sysf-tests.rkt")
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(require "exist-tests.rkt")
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(require "fomega-tests.rkt")
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(require "fomega2-tests.rkt")
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231
tapl/tests/stlc+rec-iso-tests.rkt
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231
tapl/tests/stlc+rec-iso-tests.rkt
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@ -0,0 +1,231 @@
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#lang s-exp "../stlc+rec-iso.rkt"
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(require "rackunit-typechecking.rkt")
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(define-type-alias IntList (μ (X) (∨ [: "nil" Unit] [: "cons" (× Int X)])))
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(define-type-alias ILBody (∨ [: "nil" Unit] [: "cons" (× Int IntList)]))
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;; nil
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(define nil (fld {IntList} (var "nil" = (void) as ILBody)))
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(check-type nil : IntList)
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; cons
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(define cons (λ ([n : Int] [lst : IntList]) (fld {IntList} (var "cons" = (tup n lst) as ILBody))))
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(check-type cons : (→ Int IntList IntList))
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(check-type (cons 1 nil) : IntList)
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(typecheck-fail (cons 1 2))
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(typecheck-fail (cons "1" nil))
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; isnil
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(define isnil
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(λ ([lst : IntList])
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(case (unfld {IntList} lst)
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["nil" n => #t]
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["cons" p => #f])))
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(check-type isnil : (→ IntList Bool))
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(check-type (isnil nil) : Bool ⇒ #t)
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(check-type (isnil (cons 1 nil)) : Bool ⇒ #f)
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(typecheck-fail (isnil 1))
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(typecheck-fail (isnil (cons 1 2)))
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(check-type (λ ([f : (→ IntList Bool)]) (f nil)) : (→ (→ IntList Bool) Bool))
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(check-type ((λ ([f : (→ IntList Bool)]) (f nil)) isnil) : Bool ⇒ #t)
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; hd
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(define hd
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(λ ([lst : IntList])
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(case (unfld {IntList} lst)
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["nil" n => 0]
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["cons" p => (proj p 0)])))
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(check-type hd : (→ IntList Int))
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(check-type (hd nil) : Int ⇒ 0)
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(typecheck-fail (hd 1))
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(check-type (hd (cons 11 nil)) : Int ⇒ 11)
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; tl
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(define tl
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(λ ([lst : IntList])
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(case (unfld {IntList} lst)
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["nil" n => lst]
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["cons" p => (proj p 1)])))
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(check-type tl : (→ IntList IntList))
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(check-type (tl nil) : IntList ⇒ nil)
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(check-type (tl (cons 1 nil)) : IntList ⇒ nil)
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(check-type (tl (cons 1 (cons 2 nil))) : IntList ⇒ (cons 2 nil))
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(typecheck-fail (tl 1))
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;; previous stlc+var tests ----------------------------------------------------
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;; define-type-alias
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(define-type-alias Integer Int)
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(define-type-alias ArithBinOp (→ Int Int Int))
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;(define-type-alias C Complex) ; error, Complex undefined
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(check-type ((λ ([x : Int]) (+ x 2)) 3) : Integer)
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(check-type ((λ ([x : Integer]) (+ x 2)) 3) : Int)
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(check-type ((λ ([x : Integer]) (+ x 2)) 3) : Integer)
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(check-type + : ArithBinOp)
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(check-type (λ ([f : ArithBinOp]) (f 1 2)) : (→ (→ Int Int Int) Int))
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;; records (ie labeled tuples)
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(check-type "Stephen" : String)
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(check-type (tup ["name" = "Stephen"] ["phone" = 781] ["male?" = #t]) :
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(× [: "name" String] [: "phone" Int] [: "male?" Bool]))
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(check-type (proj (tup ["name" = "Stephen"] ["phone" = 781] ["male?" = #t]) "name")
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: String ⇒ "Stephen")
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(check-type (proj (tup ["name" = "Stephen"] ["phone" = 781] ["male?" = #t]) "name")
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: String ⇒ "Stephen")
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(check-type (proj (tup ["name" = "Stephen"] ["phone" = 781] ["male?" = #t]) "phone")
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: Int ⇒ 781)
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(check-type (proj (tup ["name" = "Stephen"] ["phone" = 781] ["male?" = #t]) "male?")
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: Bool ⇒ #t)
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(check-not-type (tup ["name" = "Stephen"] ["phone" = 781] ["male?" = #t]) :
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(× [: "my-name" String] [: "phone" Int] [: "male?" Bool]))
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(check-not-type (tup ["name" = "Stephen"] ["phone" = 781] ["male?" = #t]) :
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(× [: "name" String] [: "my-phone" Int] [: "male?" Bool]))
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(check-not-type (tup ["name" = "Stephen"] ["phone" = 781] ["male?" = #t]) :
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(× [: "name" String] [: "phone" Int] [: "is-male?" Bool]))
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;; variants
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(check-type (var "coffee" = (void) as (∨ [: "coffee" Unit])) : (∨ [: "coffee" Unit]))
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(check-not-type (var "coffee" = (void) as (∨ [: "coffee" Unit])) : (∨ [: "coffee" Unit] [: "tea" Unit]))
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(typecheck-fail ((λ ([x : (∨ [: "coffee" Unit] [: "tea" Unit])]) x)
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(var "coffee" = (void) as (∨ [: "coffee" Unit]))))
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(check-type (var "coffee" = (void) as (∨ [: "coffee" Unit] [: "tea" Unit])) : (∨ [: "coffee" Unit] [: "tea" Unit]))
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(check-type (var "coffee" = (void) as (∨ [: "coffee" Unit] [: "tea" Unit] [: "coke" Unit]))
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: (∨ [: "coffee" Unit] [: "tea" Unit] [: "coke" Unit]))
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(typecheck-fail
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(case (var "coffee" = (void) as (∨ [: "coffee" Unit] [: "tea" Unit]))
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["coffee" x => 1])) ; not enough clauses
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(typecheck-fail
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(case (var "coffee" = (void) as (∨ [: "coffee" Unit] [: "tea" Unit]))
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["coffee" x => 1]
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["teaaaaaa" x => 2])) ; wrong clause
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(typecheck-fail
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(case (var "coffee" = (void) as (∨ [: "coffee" Unit] [: "tea" Unit]))
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["coffee" x => 1]
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["tea" x => 2]
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["coke" x => 3])) ; too many clauses
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(typecheck-fail
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(case (var "coffee" = (void) as (∨ [: "coffee" Unit] [: "tea" Unit]))
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["coffee" x => "1"]
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["tea" x => 2])) ; mismatched branch types
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(check-type
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(case (var "coffee" = 1 as (∨ [: "coffee" Int] [: "tea" Unit]))
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["coffee" x => x]
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["tea" x => 2]) : Int ⇒ 1)
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(define-type-alias Drink (∨ [: "coffee" Int] [: "tea" Unit] [: "coke" Bool]))
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(check-type ((λ ([x : Int]) (+ x x)) 10) : Int ⇒ 20)
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(check-type (λ ([x : Int]) (+ (+ x x) (+ x x))) : (→ Int Int))
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(check-type
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(case ((λ ([d : Drink]) d)
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(var "coffee" = 1 as (∨ [: "coffee" Int] [: "tea" Unit] [: "coke" Bool])))
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["coffee" x => (+ (+ x x) (+ x x))]
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["tea" x => 2]
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["coke" y => 3])
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: Int ⇒ 4)
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(check-type
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(case ((λ ([d : Drink]) d) (var "coffee" = 1 as Drink))
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["coffee" x => (+ (+ x x) (+ x x))]
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["tea" x => 2]
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["coke" y => 3])
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: Int ⇒ 4)
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;; previous tests: ------------------------------------------------------------
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;; tests for tuples -----------------------------------------------------------
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(check-type (tup 1 2 3) : (× Int Int Int))
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(check-type (tup 1 "1" #f +) : (× Int String Bool (→ Int Int Int)))
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(check-not-type (tup 1 "1" #f +) : (× Unit String Bool (→ Int Int Int)))
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(check-not-type (tup 1 "1" #f +) : (× Int Unit Bool (→ Int Int Int)))
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(check-not-type (tup 1 "1" #f +) : (× Int String Unit (→ Int Int Int)))
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(check-not-type (tup 1 "1" #f +) : (× Int String Bool (→ Int Int Unit)))
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(check-type (proj (tup 1 "2" #f) 0) : Int ⇒ 1)
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(check-type (proj (tup 1 "2" #f) 1) : String ⇒ "2")
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(check-type (proj (tup 1 "2" #f) 2) : Bool ⇒ #f)
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(typecheck-fail (proj (tup 1 "2" #f) 3)) ; index too large
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(typecheck-fail (proj 1 2)) ; not tuple
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;; ext-stlc.rkt tests ---------------------------------------------------------
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;; should still pass
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;; new literals and base types
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(check-type "one" : String) ; literal now supported
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(check-type #f : Bool) ; literal now supported
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(check-type (λ ([x : Bool]) x) : (→ Bool Bool)) ; Bool is now valid type
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;; Unit
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(check-type (void) : Unit)
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(check-type void : (→ Unit))
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(typecheck-fail ((λ ([x : Unit]) x) 2))
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(typecheck-fail ((λ ([x : Unit])) void))
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(check-type ((λ ([x : Unit]) x) (void)) : Unit)
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;; begin
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(typecheck-fail (begin))
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(check-type (begin 1) : Int)
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(typecheck-fail (begin 1 2 3))
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(check-type (begin (void) 1) : Int ⇒ 1)
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;;ascription
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(typecheck-fail (ann 1 : Bool))
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(check-type (ann 1 : Int) : Int ⇒ 1)
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(check-type ((λ ([x : Int]) (ann x : Int)) 10) : Int ⇒ 10)
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; let
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(check-type (let () (+ 1 1)) : Int ⇒ 2)
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(check-type (let ([x 10]) (+ 1 2)) : Int)
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(typecheck-fail (let ([x #f]) (+ x 1)))
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(check-type (let ([x 10] [y 20]) ((λ ([z : Int] [a : Int]) (+ a z)) x y)) : Int ⇒ 30)
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(typecheck-fail (let ([x 10] [y (+ x 1)]) (+ x y))) ; unbound identifier
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(check-type (let* ([x 10] [y (+ x 1)]) (+ x y)) : Int ⇒ 21)
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(typecheck-fail (let* ([x #t] [y (+ x 1)]) 1))
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; letrec
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(typecheck-fail (letrec ([(x : Int) #f] [(y : Int) 1]) y))
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(typecheck-fail (letrec ([(y : Int) 1] [(x : Int) #f]) x))
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|
||||
(check-type (letrec ([(x : Int) 1] [(y : Int) (+ x 1)]) (+ x y)) : Int ⇒ 3)
|
||||
|
||||
;; recursive
|
||||
(check-type
|
||||
(letrec ([(countdown : (→ Int String))
|
||||
(λ ([i : Int])
|
||||
(if (= i 0)
|
||||
"liftoff"
|
||||
(countdown (- i 1))))])
|
||||
(countdown 10)) : String ⇒ "liftoff")
|
||||
|
||||
;; mutually recursive
|
||||
(check-type
|
||||
(letrec ([(is-even? : (→ Int Bool))
|
||||
(λ ([n : Int])
|
||||
(or (zero? n)
|
||||
(is-odd? (sub1 n))))]
|
||||
[(is-odd? : (→ Int Bool))
|
||||
(λ ([n : Int])
|
||||
(and (not (zero? n))
|
||||
(is-even? (sub1 n))))])
|
||||
(is-odd? 11)) : Bool ⇒ #t)
|
||||
|
||||
;; tests from stlc+lit-tests.rkt --------------------------
|
||||
; most should pass, some failing may now pass due to added types/forms
|
||||
(check-type 1 : Int)
|
||||
;(check-not-type 1 : (Int → Int))
|
||||
;(typecheck-fail "one") ; literal now supported
|
||||
;(typecheck-fail #f) ; literal now supported
|
||||
(check-type (λ ([x : Int] [y : Int]) x) : (→ Int Int Int))
|
||||
(check-not-type (λ ([x : Int]) x) : Int)
|
||||
(check-type (λ ([x : Int]) x) : (→ Int Int))
|
||||
(check-type (λ ([f : (→ Int Int)]) 1) : (→ (→ Int Int) Int))
|
||||
(check-type ((λ ([x : Int]) x) 1) : Int ⇒ 1)
|
||||
(typecheck-fail ((λ ([x : Bool]) x) 1)) ; Bool now valid type, but arg has wrong type
|
||||
;(typecheck-fail (λ ([x : Bool]) x)) ; Bool is now valid type
|
||||
(typecheck-fail (λ ([f : Int]) (f 1 2))) ; applying f with non-fn type
|
||||
(check-type (λ ([f : (→ Int Int Int)] [x : Int] [y : Int]) (f x y))
|
||||
: (→ (→ Int Int Int) Int Int Int))
|
||||
(check-type ((λ ([f : (→ Int Int Int)] [x : Int] [y : Int]) (f x y)) + 1 2) : Int ⇒ 3)
|
||||
(typecheck-fail (+ 1 (λ ([x : Int]) x))) ; adding non-Int
|
||||
(typecheck-fail (λ ([x : (→ Int Int)]) (+ x x))) ; x should be Int
|
||||
(typecheck-fail ((λ ([x : Int] [y : Int]) y) 1)) ; wrong number of args
|
||||
(check-type ((λ ([x : Int]) (+ x x)) 10) : Int ⇒ 20)
|
||||
|
||||
|
|
@ -1,4 +1,4 @@
|
|||
#lang s-exp "../stlc+rec+sub.rkt"
|
||||
#lang s-exp "../stlc+reco+sub.rkt"
|
||||
(require "rackunit-typechecking.rkt")
|
||||
|
||||
;; record subtyping tests
|
||||
181
tapl/tests/stlc+reco+var-tests.rkt
Normal file
181
tapl/tests/stlc+reco+var-tests.rkt
Normal file
|
|
@ -0,0 +1,181 @@
|
|||
#lang s-exp "../stlc+reco+var.rkt"
|
||||
(require "rackunit-typechecking.rkt")
|
||||
|
||||
;; define-type-alias
|
||||
(define-type-alias Integer Int)
|
||||
(define-type-alias ArithBinOp (→ Int Int Int))
|
||||
;(define-type-alias C Complex) ; error, Complex undefined
|
||||
|
||||
(check-type ((λ ([x : Int]) (+ x 2)) 3) : Integer)
|
||||
(check-type ((λ ([x : Integer]) (+ x 2)) 3) : Int)
|
||||
(check-type ((λ ([x : Integer]) (+ x 2)) 3) : Integer)
|
||||
(check-type + : ArithBinOp)
|
||||
(check-type (λ ([f : ArithBinOp]) (f 1 2)) : (→ (→ Int Int Int) Int))
|
||||
|
||||
;; records (ie labeled tuples)
|
||||
(check-type "Stephen" : String)
|
||||
(check-type (tup ["name" = "Stephen"] ["phone" = 781] ["male?" = #t]) :
|
||||
(× [: "name" String] [: "phone" Int] [: "male?" Bool]))
|
||||
(check-type (proj (tup ["name" = "Stephen"] ["phone" = 781] ["male?" = #t]) "name")
|
||||
: String ⇒ "Stephen")
|
||||
(check-type (proj (tup ["name" = "Stephen"] ["phone" = 781] ["male?" = #t]) "name")
|
||||
: String ⇒ "Stephen")
|
||||
(check-type (proj (tup ["name" = "Stephen"] ["phone" = 781] ["male?" = #t]) "phone")
|
||||
: Int ⇒ 781)
|
||||
(check-type (proj (tup ["name" = "Stephen"] ["phone" = 781] ["male?" = #t]) "male?")
|
||||
: Bool ⇒ #t)
|
||||
(check-not-type (tup ["name" = "Stephen"] ["phone" = 781] ["male?" = #t]) :
|
||||
(× [: "my-name" String] [: "phone" Int] [: "male?" Bool]))
|
||||
(check-not-type (tup ["name" = "Stephen"] ["phone" = 781] ["male?" = #t]) :
|
||||
(× [: "name" String] [: "my-phone" Int] [: "male?" Bool]))
|
||||
(check-not-type (tup ["name" = "Stephen"] ["phone" = 781] ["male?" = #t]) :
|
||||
(× [: "name" String] [: "phone" Int] [: "is-male?" Bool]))
|
||||
|
||||
;; variants
|
||||
(check-type (var "coffee" = (void) as (∨ [: "coffee" Unit])) : (∨ [: "coffee" Unit]))
|
||||
(check-not-type (var "coffee" = (void) as (∨ [: "coffee" Unit])) : (∨ [: "coffee" Unit] [: "tea" Unit]))
|
||||
(typecheck-fail ((λ ([x : (∨ [: "coffee" Unit] [: "tea" Unit])]) x)
|
||||
(var "coffee" = (void) as (∨ [: "coffee" Unit]))))
|
||||
(check-type (var "coffee" = (void) as (∨ [: "coffee" Unit] [: "tea" Unit])) : (∨ [: "coffee" Unit] [: "tea" Unit]))
|
||||
(check-type (var "coffee" = (void) as (∨ [: "coffee" Unit] [: "tea" Unit] [: "coke" Unit]))
|
||||
: (∨ [: "coffee" Unit] [: "tea" Unit] [: "coke" Unit]))
|
||||
|
||||
(typecheck-fail
|
||||
(case (var "coffee" = (void) as (∨ [: "coffee" Unit] [: "tea" Unit]))
|
||||
["coffee" x => 1])) ; not enough clauses
|
||||
(typecheck-fail
|
||||
(case (var "coffee" = (void) as (∨ [: "coffee" Unit] [: "tea" Unit]))
|
||||
["coffee" x => 1]
|
||||
["teaaaaaa" x => 2])) ; wrong clause
|
||||
(typecheck-fail
|
||||
(case (var "coffee" = (void) as (∨ [: "coffee" Unit] [: "tea" Unit]))
|
||||
["coffee" x => 1]
|
||||
["tea" x => 2]
|
||||
["coke" x => 3])) ; too many clauses
|
||||
(typecheck-fail
|
||||
(case (var "coffee" = (void) as (∨ [: "coffee" Unit] [: "tea" Unit]))
|
||||
["coffee" x => "1"]
|
||||
["tea" x => 2])) ; mismatched branch types
|
||||
(check-type
|
||||
(case (var "coffee" = 1 as (∨ [: "coffee" Int] [: "tea" Unit]))
|
||||
["coffee" x => x]
|
||||
["tea" x => 2]) : Int ⇒ 1)
|
||||
(define-type-alias Drink (∨ [: "coffee" Int] [: "tea" Unit] [: "coke" Bool]))
|
||||
(check-type ((λ ([x : Int]) (+ x x)) 10) : Int ⇒ 20)
|
||||
(check-type (λ ([x : Int]) (+ (+ x x) (+ x x))) : (→ Int Int))
|
||||
(check-type
|
||||
(case ((λ ([d : Drink]) d)
|
||||
(var "coffee" = 1 as (∨ [: "coffee" Int] [: "tea" Unit] [: "coke" Bool])))
|
||||
["coffee" x => (+ (+ x x) (+ x x))]
|
||||
["tea" x => 2]
|
||||
["coke" y => 3])
|
||||
: Int ⇒ 4)
|
||||
|
||||
(check-type
|
||||
(case ((λ ([d : Drink]) d) (var "coffee" = 1 as Drink))
|
||||
["coffee" x => (+ (+ x x) (+ x x))]
|
||||
["tea" x => 2]
|
||||
["coke" y => 3])
|
||||
: Int ⇒ 4)
|
||||
|
||||
;; previous tests: ------------------------------------------------------------
|
||||
;; tests for tuples -----------------------------------------------------------
|
||||
(check-type (tup 1 2 3) : (× Int Int Int))
|
||||
(check-type (tup 1 "1" #f +) : (× Int String Bool (→ Int Int Int)))
|
||||
(check-not-type (tup 1 "1" #f +) : (× Unit String Bool (→ Int Int Int)))
|
||||
(check-not-type (tup 1 "1" #f +) : (× Int Unit Bool (→ Int Int Int)))
|
||||
(check-not-type (tup 1 "1" #f +) : (× Int String Unit (→ Int Int Int)))
|
||||
(check-not-type (tup 1 "1" #f +) : (× Int String Bool (→ Int Int Unit)))
|
||||
|
||||
(check-type (proj (tup 1 "2" #f) 0) : Int ⇒ 1)
|
||||
(check-type (proj (tup 1 "2" #f) 1) : String ⇒ "2")
|
||||
(check-type (proj (tup 1 "2" #f) 2) : Bool ⇒ #f)
|
||||
(typecheck-fail (proj (tup 1 "2" #f) 3)) ; index too large
|
||||
(typecheck-fail (proj 1 2)) ; not tuple
|
||||
|
||||
;; ext-stlc.rkt tests ---------------------------------------------------------
|
||||
;; should still pass
|
||||
|
||||
;; new literals and base types
|
||||
(check-type "one" : String) ; literal now supported
|
||||
(check-type #f : Bool) ; literal now supported
|
||||
|
||||
(check-type (λ ([x : Bool]) x) : (→ Bool Bool)) ; Bool is now valid type
|
||||
|
||||
;; Unit
|
||||
(check-type (void) : Unit)
|
||||
(check-type void : (→ Unit))
|
||||
(typecheck-fail ((λ ([x : Unit]) x) 2))
|
||||
(typecheck-fail ((λ ([x : Unit])) void))
|
||||
(check-type ((λ ([x : Unit]) x) (void)) : Unit)
|
||||
|
||||
;; begin
|
||||
(typecheck-fail (begin))
|
||||
(check-type (begin 1) : Int)
|
||||
(typecheck-fail (begin 1 2 3))
|
||||
(check-type (begin (void) 1) : Int ⇒ 1)
|
||||
|
||||
;;ascription
|
||||
(typecheck-fail (ann 1 : Bool))
|
||||
(check-type (ann 1 : Int) : Int ⇒ 1)
|
||||
(check-type ((λ ([x : Int]) (ann x : Int)) 10) : Int ⇒ 10)
|
||||
|
||||
; let
|
||||
(check-type (let () (+ 1 1)) : Int ⇒ 2)
|
||||
(check-type (let ([x 10]) (+ 1 2)) : Int)
|
||||
(typecheck-fail (let ([x #f]) (+ x 1)))
|
||||
(check-type (let ([x 10] [y 20]) ((λ ([z : Int] [a : Int]) (+ a z)) x y)) : Int ⇒ 30)
|
||||
(typecheck-fail (let ([x 10] [y (+ x 1)]) (+ x y))) ; unbound identifier
|
||||
|
||||
(check-type (let* ([x 10] [y (+ x 1)]) (+ x y)) : Int ⇒ 21)
|
||||
(typecheck-fail (let* ([x #t] [y (+ x 1)]) 1))
|
||||
|
||||
; letrec
|
||||
(typecheck-fail (letrec ([(x : Int) #f] [(y : Int) 1]) y))
|
||||
(typecheck-fail (letrec ([(y : Int) 1] [(x : Int) #f]) x))
|
||||
|
||||
(check-type (letrec ([(x : Int) 1] [(y : Int) (+ x 1)]) (+ x y)) : Int ⇒ 3)
|
||||
|
||||
;; recursive
|
||||
(check-type
|
||||
(letrec ([(countdown : (→ Int String))
|
||||
(λ ([i : Int])
|
||||
(if (= i 0)
|
||||
"liftoff"
|
||||
(countdown (- i 1))))])
|
||||
(countdown 10)) : String ⇒ "liftoff")
|
||||
|
||||
;; mutually recursive
|
||||
(check-type
|
||||
(letrec ([(is-even? : (→ Int Bool))
|
||||
(λ ([n : Int])
|
||||
(or (zero? n)
|
||||
(is-odd? (sub1 n))))]
|
||||
[(is-odd? : (→ Int Bool))
|
||||
(λ ([n : Int])
|
||||
(and (not (zero? n))
|
||||
(is-even? (sub1 n))))])
|
||||
(is-odd? 11)) : Bool ⇒ #t)
|
||||
|
||||
;; tests from stlc+lit-tests.rkt --------------------------
|
||||
; most should pass, some failing may now pass due to added types/forms
|
||||
(check-type 1 : Int)
|
||||
;(check-not-type 1 : (Int → Int))
|
||||
;(typecheck-fail "one") ; literal now supported
|
||||
;(typecheck-fail #f) ; literal now supported
|
||||
(check-type (λ ([x : Int] [y : Int]) x) : (→ Int Int Int))
|
||||
(check-not-type (λ ([x : Int]) x) : Int)
|
||||
(check-type (λ ([x : Int]) x) : (→ Int Int))
|
||||
(check-type (λ ([f : (→ Int Int)]) 1) : (→ (→ Int Int) Int))
|
||||
(check-type ((λ ([x : Int]) x) 1) : Int ⇒ 1)
|
||||
(typecheck-fail ((λ ([x : Bool]) x) 1)) ; Bool now valid type, but arg has wrong type
|
||||
;(typecheck-fail (λ ([x : Bool]) x)) ; Bool is now valid type
|
||||
(typecheck-fail (λ ([f : Int]) (f 1 2))) ; applying f with non-fn type
|
||||
(check-type (λ ([f : (→ Int Int Int)] [x : Int] [y : Int]) (f x y))
|
||||
: (→ (→ Int Int Int) Int Int Int))
|
||||
(check-type ((λ ([f : (→ Int Int Int)] [x : Int] [y : Int]) (f x y)) + 1 2) : Int ⇒ 3)
|
||||
(typecheck-fail (+ 1 (λ ([x : Int]) x))) ; adding non-Int
|
||||
(typecheck-fail (λ ([x : (→ Int Int)]) (+ x x))) ; x should be Int
|
||||
(typecheck-fail ((λ ([x : Int] [y : Int]) y) 1)) ; wrong number of args
|
||||
(check-type ((λ ([x : Int]) (+ x x)) 10) : Int ⇒ 20)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user