948 lines
35 KiB
Racket
948 lines
35 KiB
Racket
#lang turnstile
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(provide (rename-out [syndicate:#%module-begin #%module-begin])
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(rename-out [typed-app #%app])
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(rename-out [syndicate:begin-for-declarations declare-types])
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#%top-interaction
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require only-in
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;; Types
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Int Bool String Tuple Bind Discard Case → Behavior FacetName Field ★
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Observe Inbound Outbound Actor U
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;; Statements
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let spawn dataspace facet set! begin stop unsafe-do
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;; endpoints
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assert on
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;; expressions
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tuple λ ref observe inbound outbound
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;; values
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#%datum
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;; patterns
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bind discard
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;; primitives
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+ - * / and or not > < >= <= = equal? displayln
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;; making types
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define-type-alias
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define-constructor
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;; DEBUG and utilities
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print-type
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(rename-out [printf- printf])
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;; Extensions
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match if cond
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)
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(require (rename-in racket/match [match-lambda match-lambda-]))
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(require (rename-in racket/math [exact-truncate exact-truncate-]))
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(require (prefix-in syndicate: syndicate/actor-lang))
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(module+ test
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(require rackunit)
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(require rackunit/turnstile))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Types
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(define-base-types Int Bool String Discard ★ FacetName)
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(define-type-constructor Field #:arity = 1)
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;; (Behavior τv τi τo τa)
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;; τv is the type of thing it evaluates to
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;; τi is the type of patterns used to consume incoming assertions
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;; τo is the type of assertions made
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;; τa is the type of spawned actors
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(define-type-constructor Behavior #:arity = 4)
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(define-type-constructor Bind #:arity = 1)
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(define-type-constructor Tuple #:arity >= 0)
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(define-type-constructor U #:arity >= 0)
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(define-type-constructor Case #:arity >= 0)
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(define-type-constructor → #:arity > 0)
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(define-type-constructor Observe #:arity = 1)
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(define-type-constructor Inbound #:arity = 1)
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(define-type-constructor Outbound #:arity = 1)
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(define-type-constructor Actor #:arity = 1)
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(define-for-syntax (type-eval t)
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((current-type-eval) t))
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;; this needs to be here until I stop 'compiling' patterns and just have them expand to the right
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;; thing
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(begin-for-syntax
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(current-use-stop-list? #f))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; User Defined Types, aka Constructors
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;; τ.norm in 1st case causes "not valid type" error when file is compiled
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;; (copied from ext-stlc example)
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(define-syntax define-type-alias
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(syntax-parser
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[(_ alias:id τ:any-type)
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#'(define-syntax- alias
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(make-variable-like-transformer #'τ.norm))]
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[(_ (f:id x:id ...) ty)
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#'(define-syntax- (f stx)
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(syntax-parse stx
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[(_ x ...)
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#:with τ:any-type #'ty
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#'τ.norm]))]))
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(begin-for-syntax
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(define-splicing-syntax-class type-constructor-decl
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(pattern (~seq #:type-constructor TypeCons:id))
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(pattern (~seq) #:attr TypeCons #f))
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(struct user-ctor (typed-ctor untyped-ctor)
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#:property prop:procedure
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(lambda (v stx)
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(define transformer (user-ctor-typed-ctor v))
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(syntax-parse stx
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[(_ e ...)
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#`(#,transformer e ...)]))))
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(define-syntax (define-constructor stx)
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(syntax-parse stx
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[(_ (Cons:id slot:id ...)
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ty-cons:type-constructor-decl
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(~seq #:with
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Alias AliasBody) ...)
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#:with TypeCons (or (attribute ty-cons.TypeCons) (format-id stx "~a/t" (syntax-e #'Cons)))
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#:with MakeTypeCons (format-id #'TypeCons "make-~a" #'TypeCons)
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#:with GetTypeParams (format-id #'TypeCons "get-~a-type-params" #'TypeCons)
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#:with TypeConsExpander (format-id #'TypeCons "~~~a" #'TypeCons)
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#:with TypeConsExtraInfo (format-id #'TypeCons "~a-extra-info" #'TypeCons)
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#:with (StructName Cons- type-tag) (generate-temporaries #'(Cons Cons Cons))
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(define arity (stx-length #'(slot ...)))
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#`(begin-
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(struct- StructName (slot ...) #:reflection-name 'Cons #:transparent)
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(define-syntax (TypeConsExtraInfo stx)
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(syntax-parse stx
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[(_ X (... ...)) #'('type-tag 'MakeTypeCons 'GetTypeParams)]))
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(define-type-constructor TypeCons
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#:arity = #,arity
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#:extra-info 'TypeConsExtraInfo)
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(define-syntax (MakeTypeCons stx)
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(syntax-parse stx
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[(_ t (... ...))
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#:fail-unless (= #,arity (stx-length #'(t (... ...)))) "arity mismatch"
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#'(TypeCons t (... ...))]))
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(define-syntax (GetTypeParams stx)
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(syntax-parse stx
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[(_ (TypeConsExpander t (... ...)))
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#'(t (... ...))]))
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(define-syntax Cons
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(user-ctor #'Cons- #'StructName))
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(define-typed-syntax (Cons- e (... ...)) ≫
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#:fail-unless (= #,arity (stx-length #'(e (... ...)))) "arity mismatch"
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[⊢ e ≫ e- (⇒ : τ)] (... ...)
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----------------------
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[⊢ (#%app- StructName e- (... ...)) (⇒ : (TypeCons τ (... ...)))
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(⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))])
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(define-type-alias Alias AliasBody) ...)]))
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(begin-for-syntax
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(define-syntax ~constructor-extra-info
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(pattern-expander
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(syntax-parser
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[(_ tag mk get)
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#'(_ (_ tag) (_ mk) (_ get))])))
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(define-syntax ~constructor-type
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(pattern-expander
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(syntax-parser
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[(_ tag . rst)
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#'(~and it
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(~fail #:unless (user-defined-type? #'it))
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(~parse tag (get-type-tag #'it))
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(~Any _ . rst))])))
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(define-syntax ~constructor-exp
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(pattern-expander
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(syntax-parser
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[(_ cons . rst)
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#'(~and (cons . rst)
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(~fail #:unless (ctor-id? #'cons)))])))
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(define (inspect t)
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(syntax-parse t
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[(~constructor-type tag t ...)
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(list (syntax-e #'tag) (stx-map type->str #'(t ...)))]))
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(define (tags-equal? t1 t2)
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(equal? (syntax-e t1) (syntax-e t2)))
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(define (user-defined-type? t)
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(get-extra-info (type-eval t)))
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(define (get-type-tag t)
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(syntax-parse (get-extra-info t)
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[(~constructor-extra-info tag _ _)
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(syntax-e #'tag)]))
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(define (get-type-args t)
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(syntax-parse (get-extra-info t)
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[(~constructor-extra-info _ _ get)
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(define f (syntax-local-value #'get))
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(syntax->list (f #`(get #,t)))]))
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(define (make-cons-type t args)
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(syntax-parse (get-extra-info t)
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[(~constructor-extra-info _ mk _)
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(define f (syntax-local-value #'mk))
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(type-eval (f #`(mk #,@args)))]))
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(define (ctor-id? stx)
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(and (identifier? stx)
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(user-ctor? (syntax-local-value stx (const #f)))))
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(define (untyped-ctor stx)
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(user-ctor-untyped-ctor (syntax-local-value stx (const #f)))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Syntax
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(begin-for-syntax
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#|
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it's expensive and inflexible to fully parse these, but this is what the language
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is meant to be
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(define-syntax-class stmt
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#:datum-literals (:
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begin
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let
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set!
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spawn
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dataspace
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stop
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facet
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unsafe-do
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fields)
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(pattern (~or (begin seq:stmt ...)
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(e1:exp e2:exp)
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(let [f:id e:exp] let-fun-body:stmt)
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(set! x:id e:exp)
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(spawn τ:type s:stmt)
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(dataspace τ:type nested:stmt ...)
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(stop x:id s:stmt)
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(facet x:id (fields [fn:id τf:type ef:exp] ...) ep:endpoint ...+)
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;; note racket expr, not exp
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(unsafe-do rkt:expr ...))))
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(define-syntax-class exp
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#:datum-literals (tuple λ ref)
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(pattern (~or (o:prim-op es:exp ...)
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basic-val
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(k:kons1 e:exp)
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(tuple es:exp ...)
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(ref x:id)
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(λ [p:pat s:stmt] ...))))
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|#
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;; constructors with arity one
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(define-syntax-class kons1
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(pattern (~or (~datum observe)
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(~datum inbound)
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(~datum outbound))))
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(define (kons1->constructor stx)
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(syntax-parse stx
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#:datum-literals (observe inbound outbound)
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[observe #'syndicate:observe]
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[inbound #'syndicate:inbound]
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[outbound #'syndicate:outbound]))
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(define-syntax-class basic-val
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(pattern (~or boolean
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integer
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string)))
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(define-syntax-class prim-op
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(pattern (~or (~literal +)
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(~literal -)
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(~literal displayln))))
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#;(define-syntax-class endpoint
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#:datum-literals (on start stop)
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(pattern (~or (on ed:event-desc s)
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(assert e:expr))))
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#;(define-syntax-class event-desc
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#:datum-literals (start stop asserted retracted)
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(pattern (~or start
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stop
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(asserted p:pat)
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(retracted p:pat))))
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#;(define-syntax-class pat
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#:datum-literals (tuple _ discard bind)
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#:attributes (syndicate-pattern match-pattern)
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(pattern (~or (~and (tuple ps:pat ...)
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(~bind [syndicate-pattern #'(list 'tuple ps.syndicate-pattern ...)]
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[match-pattern #'(list 'tuple ps.match-pattern ...)]))
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(~and (k:kons1 p:pat)
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(~bind [syndicate-pattern #`(#,(kons1->constructor #'k) p.syndicate-pattern)]
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[match-pattern #`(#,(kons1->constructor #'k) p.match-pattern)]))
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(~and (bind ~! x:id τ:type)
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(~bind [syndicate-pattern #'($ x)]
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[match-pattern #'x]))
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(~and discard
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(~bind [syndicate-pattern #'_]
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[match-pattern #'_]))
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(~and x:id
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(~bind [syndicate-pattern #'x]
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[match-pattern #'(== x)]))
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(~and e:expr
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(~bind [syndicate-pattern #'e]
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[match-pattern #'(== e)])))))
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(define (compile-pattern pat bind-id-transformer exp-transformer)
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(let loop ([pat pat])
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(syntax-parse pat
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#:datum-literals (tuple discard bind)
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[(tuple p ...)
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#`(list 'tuple #,@(stx-map loop #'(p ...)))]
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[(k:kons1 p)
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#`(#,(kons1->constructor #'k) #,(loop #'p))]
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[(bind x:id τ:type)
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(bind-id-transformer #'x)]
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[discard
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#'_]
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[(~constructor-exp ctor p ...)
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(define/with-syntax uctor (untyped-ctor #'ctor))
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#`(uctor #,@(stx-map loop #'(p ...)))]
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[_
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(exp-transformer pat)])))
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(define (compile-match-pattern pat)
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(compile-pattern pat
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identity
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(lambda (exp) #`(== #,exp))))
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(define (compile-syndicate-pattern pat)
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(compile-pattern pat
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(lambda (id) #`($ #,id))
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identity)))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Subtyping
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;; TODO: subtyping for facets
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;; Type Type -> Bool
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(define-for-syntax (<: t1 t2)
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#;(printf "Checking ~a <: ~a\n" (type->str t1) (type->str t2))
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;; should add a check for type=?
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(syntax-parse #`(#,t1 #,t2)
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#;[(τ1 τ2) #:do [(displayln (type->str #'τ1))
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(displayln (type->str #'τ2))]
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#:when #f
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(error "")]
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[((~U τ1 ...) _)
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(stx-andmap (lambda (t) (<: t t2)) #'(τ1 ...))]
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[(_ (~U τ2:type ...))
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(stx-ormap (lambda (t) (<: t1 t)) #'(τ2 ...))]
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[((~Actor τ1:type) (~Actor τ2:type))
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;; should these be .norm? Is the invariant that inputs are always fully
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;; evalutated/expanded?
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(and (<: #'τ1 #'τ2)
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(<: (∩ (strip-? #'τ1) #'τ2) #'τ1))]
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[((~Tuple τ1:type ...) (~Tuple τ2:type ...))
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#:when (stx-length=? #'(τ1 ...) #'(τ2 ...))
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(stx-andmap <: #'(τ1 ...) #'(τ2 ...))]
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[(_ ~★)
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(flat-type? t1)]
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[((~Observe τ1:type) (~Observe τ2:type))
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(<: #'τ1 #'τ2)]
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[((~Inbound τ1:type) (~Inbound τ2:type))
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(<: #'τ1 #'τ2)]
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[((~Outbound τ1:type) (~Outbound τ2:type))
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(<: #'τ1 #'τ2)]
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[((~constructor-type t1 τ1:type ...) (~constructor-type t2 τ2:type ...))
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#:when (tags-equal? #'t1 #'t2)
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(and (stx-length=? #'(τ1 ...) #'(τ2 ...))
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(stx-andmap <: #'(τ1 ...) #'(τ2 ...)))]
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[((~Behavior τ-v1 τ-i1 τ-o1 τ-a1) (~Behavior τ-v2 τ-i2 τ-o2 τ-a2))
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(and (<: #'τ-v1 #'τ-v2)
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;; HMMMMMM. i2 and i1 are types of patterns. TODO
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;; Want: ∀σ. project-safe(σ, τ-i2) ⇒ project-safe(σ, τ-i1)
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(<: #'τ-i2 #'τ-i1)
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(<: #'τ-o1 #'τ-o2)
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(<: (type-eval #'(Actor τ-a1)) (type-eval #'(Actor τ-a2))))]
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[((~→ τ-in1 ... τ-out1) (~→ τ-in2 ... τ-out2))
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#:when (stx-length=? #'(τ-in1 ...) #'(τ-in2 ...))
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(and (stx-andmap <: #'(τ-in2 ...) #'(τ-in1 ...))
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(<: #'τ-out1 #'τ-out2))]
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[((~Field τ1) (~Field τ2))
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(and (<: #'τ1 #'τ2)
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(<: #'τ2 #'τ1))]
|
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[(~Discard _)
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#t]
|
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[((~Bind τ1) (~Bind τ2))
|
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(<: #'τ1 #'τ2)]
|
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;; should probably put this first.
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[_ (type=? t1 t2)]))
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|
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;; Flat-Type Flat-Type -> Type
|
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(define-for-syntax (∩ t1 t2)
|
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(unless (and (flat-type? t1) (flat-type? t2))
|
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(error '∩ "expected two flat-types"))
|
||
(syntax-parse #`(#,t1 #,t2)
|
||
[(_ ~★)
|
||
t1]
|
||
[(~★ _)
|
||
t2]
|
||
[(_ _)
|
||
#:when (type=? t1 t2)
|
||
t1]
|
||
[((~U τ1:type ...) _)
|
||
(type-eval #`(U #,@(stx-map (lambda (t) (∩ t t2)) #'(τ1 ...))))]
|
||
[(_ (~U τ2:type ...))
|
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(type-eval #`(U #,@(stx-map (lambda (t) (∩ t1 t)) #'(τ2 ...))))]
|
||
;; all of these fail-when/unless clauses are meant to cause this through to
|
||
;; the last case and result in ⊥.
|
||
;; Also, using <: is OK, even though <: refers to ∩, because <:'s use of ∩ is only
|
||
;; in the Actor case.
|
||
[((~Tuple τ1:type ...) (~Tuple τ2:type ...))
|
||
#:fail-unless (stx-length=? #'(τ1 ...) #'(τ2 ...)) #f
|
||
#:with (τ ...) (stx-map ∩ #'(τ1 ...) #'(τ2 ...))
|
||
;; I don't think stx-ormap is part of the documented api of turnstile *shrug*
|
||
#:fail-when (stx-ormap (lambda (t) (<: t (type-eval #'(U)))) #'(τ ...)) #f
|
||
(type-eval #'(Tuple τ ...))]
|
||
[((~constructor-type tag1 τ1:type ...) (~constructor-type tag2 τ2:type ...))
|
||
#:when (tags-equal? #'tag1 #'tag2)
|
||
#:with (τ ...) (stx-map ∩ #'(τ1 ...) #'(τ2 ...))
|
||
#:fail-when (stx-ormap (lambda (t) (<: t (type-eval #'(U)))) #'(τ ...)) #f
|
||
(make-cons-type t1 #'(τ ...))]
|
||
;; these three are just the same :(
|
||
[((~Observe τ1:type) (~Observe τ2:type))
|
||
#:with τ (∩ #'τ1 #'τ2)
|
||
#:fail-when (<: #'τ (type-eval #'(U))) #f
|
||
(type-eval #'(Observe τ))]
|
||
[((~Inbound τ1:type) (~Inbound τ2:type))
|
||
#:with τ (∩ #'τ1 #'τ2)
|
||
#:fail-when (<: #'τ (type-eval #'(U))) #f
|
||
(type-eval #'(Inbound τ))]
|
||
[((~Outbound τ1:type) (~Outbound τ2:type))
|
||
#:with τ (∩ #'τ1 #'τ2)
|
||
#:fail-when (<: #'τ (type-eval #'(U))) #f
|
||
(type-eval #'(Outbound τ))]
|
||
[_ (type-eval #'(U))]))
|
||
|
||
;; Type Type -> Bool
|
||
;; first type is the contents of the set
|
||
;; second type is the type of a pattern
|
||
(define-for-syntax (project-safe? t1 t2)
|
||
(syntax-parse #`(#,t1 #,t2)
|
||
[(_ (~Bind τ2:type))
|
||
(and (finite? t1) (<: t1 #'τ2))]
|
||
[(_ ~Discard)
|
||
#t]
|
||
[((~U τ1:type ...) _)
|
||
(stx-andmap (lambda (t) (project-safe? t t2)) #'(τ1 ...))]
|
||
[(_ (~U τ2:type ...))
|
||
(stx-andmap (lambda (t) (project-safe? t1 t)) #'(τ2 ...))]
|
||
[((~Tuple τ1:type ...) (~Tuple τ2:type ...))
|
||
#:when (overlap? t1 t2)
|
||
(stx-andmap project-safe? #'(τ1 ...) #'(τ2 ...))]
|
||
[((~constructor-type t1 τ1:type ...) (~constructor-type t2 τ2:type ...))
|
||
#:when (tags-equal? #'t1 #'t2)
|
||
(stx-andmap project-safe? #'(τ1 ...) #'(τ2 ...))]
|
||
[((~Observe τ1:type) (~Observe τ2:type))
|
||
(project-safe? #'τ1 #'τ2)]
|
||
[((~Inbound τ1:type) (~Inbound τ2:type))
|
||
(project-safe? #'τ1 #'τ2)]
|
||
[((~Outbound τ1:type) (~Outbound τ2:type))
|
||
(project-safe? #'τ1 #'τ2)]
|
||
[_ #t]))
|
||
|
||
;; AssertionType PatternType -> Bool
|
||
;; Is it possible for things of these two types to match each other?
|
||
;; Flattish-Type = Flat-Types + ★, Bind, Discard (assertion and pattern types)
|
||
(define-for-syntax (overlap? t1 t2)
|
||
(syntax-parse #`(#,t1 #,t2)
|
||
[(~★ _) #t]
|
||
[(_ (~Bind _)) #t]
|
||
[(_ ~Discard) #t]
|
||
[((~U τ1:type ...) _)
|
||
(stx-ormap (lambda (t) (overlap? t t2)) #'(τ1 ...))]
|
||
[(_ (~U τ2:type ...))
|
||
(stx-ormap (lambda (t) (overlap? t1 t)) #'(τ2 ...))]
|
||
[((~Tuple τ1:type ...) (~Tuple τ2:type ...))
|
||
(and (stx-length=? #'(τ1 ...) #'(τ2 ...))
|
||
(stx-andmap overlap? #'(τ1 ...) #'(τ2 ...)))]
|
||
[((~constructor-type t1 τ1:type ...) (~constructor-type t2 τ2:type ...))
|
||
(and (tags-equal? #'t1 #'t2)
|
||
(stx-andmap overlap? #'(τ1 ...) #'(τ2 ...)))]
|
||
[((~Observe τ1:type) (~Observe τ2:type))
|
||
(overlap? #'τ1 #'τ2)]
|
||
[((~Inbound τ1:type) (~Inbound τ2:type))
|
||
(overlap? #'τ1 #'τ2)]
|
||
[((~Outbound τ1:type) (~Outbound τ2:type))
|
||
(overlap? #'τ1 #'τ2)]
|
||
[_ (<: t1 t2)]))
|
||
|
||
|
||
;; Flattish-Type -> Bool
|
||
(define-for-syntax (finite? t)
|
||
(syntax-parse t
|
||
[~★ #f]
|
||
[(~U τ:type ...)
|
||
(stx-andmap finite? #'(τ ...))]
|
||
[(~Tuple τ:type ...)
|
||
(stx-andmap finite? #'(τ ...))]
|
||
[(~constructor-type _ τ:type ...)
|
||
(stx-andmap finite? #'(τ ...))]
|
||
[(~Observe τ:type)
|
||
(finite? #'τ)]
|
||
[(~Inbound τ:type)
|
||
(finite? #'τ)]
|
||
[(~Outbound τ:type)
|
||
(finite? #'τ)]
|
||
[_ #t]))
|
||
|
||
;; !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||
;; MODIFYING GLOBAL TYPECHECKING STATE!!!!!
|
||
;; !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||
|
||
(begin-for-syntax
|
||
(current-typecheck-relation <:))
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;; Statements
|
||
|
||
;; CONVENTIONS
|
||
;; The `:` key is for evaluated expressions
|
||
;; The `:i` key is for input patterns
|
||
;; The `:o` key is for output assertions
|
||
;; The `:a` key is for spawned actors
|
||
|
||
(define-typed-syntax (set! x:id e:expr) ≫
|
||
[⊢ e ≫ e- (⇒ : τ)]
|
||
[⊢ x ≫ x- (⇒ : (~Field τ-x:type))]
|
||
#:fail-unless (<: #'τ #'τ-x) "Ill-typed field write"
|
||
----------------------------------------------------
|
||
[⊢ (x- e-) (⇒ : (U)) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))])
|
||
|
||
(define-typed-syntax (stop facet-name:id cont) ≫
|
||
[⊢ facet-name ≫ facet-name- (⇐ : FacetName)]
|
||
[⊢ cont ≫ cont- (⇒ :i τ-i) (⇒ :o τ-o) (⇒ :a τ-a)]
|
||
--------------------------------------------------
|
||
[⊢ (syndicate:stop-facet facet-name- cont-) (⇒ : (U)) (⇒ :i τ-i) (⇒ :o τ-o) (⇒ :a τ-a)])
|
||
|
||
(define-typed-syntax (facet name:id ((~datum fields) [x:id τ:type e:expr] ...) ep ...+) ≫
|
||
#:fail-unless (stx-andmap flat-type? #'(τ ...)) "keep your uppity data outa my fields"
|
||
[⊢ e ≫ e- (⇐ : τ)] ...
|
||
[[name ≫ name- : FacetName] [x ≫ x- : (Field τ)] ...
|
||
⊢ [ep ≫ ep- (⇒ :i τ-i) (⇒ :o τ-o) (⇒ :a τ-a)] ...]
|
||
--------------------------------------------------------------
|
||
;; name NOT name- here because I get an error that way.
|
||
;; Since name is just an identifier I think it's OK?
|
||
[⊢ (syndicate:react (let- ([name- (syndicate:current-facet-id)])
|
||
#,(make-fields #'(x- ...) #'(e- ...))
|
||
#;(syndicate:field [x- e-] ...)
|
||
ep- ...))
|
||
(⇒ : (U)) (⇒ :i (U τ-i ...)) (⇒ :o (U τ-o ...)) (⇒ :a (U τ-a ...))])
|
||
|
||
(define-for-syntax (make-fields names inits)
|
||
(syntax-parse #`(#,names #,inits)
|
||
[((x:id ...) (e ...))
|
||
#'(syndicate:field [x e] ...)]))
|
||
|
||
(define-typed-syntax (dataspace τ-c:type s ...) ≫
|
||
;; #:do [(printf "τ-c: ~a\n" (type->str #'τ-c.norm))]
|
||
#:fail-unless (flat-type? #'τ-c.norm) "Communication type must be first-order"
|
||
[⊢ s ≫ s- (⇒ :i τ-i:type) (⇒ :o τ-o:type) (⇒ :a τ-s:type)] ...
|
||
;; #:do [(printf "dataspace types: ~a\n" (stx-map type->str #'(τ-s.norm ...)))
|
||
;; (printf "dataspace type: ~a\n" (type->str ((current-type-eval) #'(Actor τ-c.norm))))]
|
||
#:fail-unless (stx-andmap (lambda (t) (<: (type-eval #`(Actor #,t))
|
||
(type-eval #'(Actor τ-c.norm))))
|
||
#'(τ-s.norm ...))
|
||
"Not all actors conform to communication type"
|
||
#:fail-unless (stx-andmap (lambda (t) (<: t (type-eval #'(U))))
|
||
#'(τ-i.norm ...)) "dataspace init should only be a spawn"
|
||
#:fail-unless (stx-andmap (lambda (t) (<: t (type-eval #'(U))))
|
||
#'(τ-o.norm ...)) "dataspace init should only be a spawn"
|
||
#:with τ-ds-i (strip-inbound #'τ-c.norm)
|
||
#:with τ-ds-o (strip-outbound #'τ-c.norm)
|
||
#:with τ-relay (relay-interests #'τ-c.norm)
|
||
-----------------------------------------------------------------------------------
|
||
[⊢ (syndicate:dataspace s- ...) (⇒ : (U)) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U τ-ds-i τ-ds-o τ-relay))])
|
||
|
||
(define-for-syntax (strip-? t)
|
||
(type-eval
|
||
(syntax-parse t
|
||
;; TODO: probably need to `normalize` the result
|
||
[(~U τ ...) #`(U #,@(stx-map strip-? #'(τ ...)))]
|
||
[~★ #'★]
|
||
[(~Observe τ) #'τ]
|
||
[_ #'(U)])))
|
||
|
||
(define-for-syntax (strip-inbound t)
|
||
(type-eval
|
||
(syntax-parse t
|
||
;; TODO: probably need to `normalize` the result
|
||
[(~U τ ...) #`(U #,@(stx-map strip-? #'(τ ...)))]
|
||
[~★ #'★]
|
||
[(~Inbound τ) #'τ]
|
||
[_ #'(U)])))
|
||
|
||
(define-for-syntax (strip-outbound t)
|
||
(type-eval
|
||
(syntax-parse t
|
||
;; TODO: probably need to `normalize` the result
|
||
[(~U τ ...) #`(U #,@(stx-map strip-? #'(τ ...)))]
|
||
[~★ #'★]
|
||
[(~Outbound τ) #'τ]
|
||
[_ #'(U)])))
|
||
|
||
(define-for-syntax (relay-interests t)
|
||
(type-eval
|
||
(syntax-parse t
|
||
;; TODO: probably need to `normalize` the result
|
||
[(~U τ ...) #`(U #,@(stx-map strip-? #'(τ ...)))]
|
||
[~★ #'★]
|
||
[(~Observe (~Inbound τ)) #'(Observe τ)]
|
||
[_ #'(U)])))
|
||
|
||
(define-typed-syntax (spawn τ-c:type s) ≫
|
||
#:fail-unless (flat-type? #'τ-c.norm) "Communication type must be first-order"
|
||
[⊢ s ≫ s- (⇒ :i τ-i:type) (⇒ :o τ-o:type) (⇒ :a τ-a:type)]
|
||
;; TODO: s shouldn't refer to facets or fields!
|
||
#:fail-unless (<: #'τ-o.norm #'τ-c.norm)
|
||
(format "Output ~a not valid in dataspace ~a" (type->str #'τ-o.norm) (type->str #'τ-c.norm))
|
||
#:fail-unless (<: (type-eval #'(Actor τ-a.norm))
|
||
(type-eval #'(Actor τ-c.norm))) "Spawned actors not valid in dataspace"
|
||
#:fail-unless (project-safe? (∩ (strip-? #'τ-o.norm) #'τ-c.norm)
|
||
#'τ-i.norm) "Not prepared to handle all inputs"
|
||
;; #:do [(printf "spawning: ~v\n" #'s-)]
|
||
--------------------------------------------------------------------------------------------
|
||
[⊢ (syndicate:spawn (syndicate:on-start s-)) (⇒ : (U)) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a τ-c)])
|
||
|
||
(define-typed-syntax (let [f:id e:expr] body:expr) ≫
|
||
[⊢ e ≫ e- (⇒ : τ:type)]
|
||
#:fail-unless (or (procedure-type? #'τ.norm) (flat-type? #'τ.norm))
|
||
(format "let doesn't bind actions; got ~a" (type->str #'τ.norm))
|
||
[[f ≫ f- : τ] ⊢ body ≫ body- (⇒ : τ-body) (⇒ :i τ-body-i) (⇒ :o τ-body-o) (⇒ :a τ-body-a)]
|
||
------------------------------------------------------------------------
|
||
[⊢ (let- ([f- e-]) body-) (⇒ : τ-body) (⇒ :i τ-body-i) (⇒ :o τ-body-o) (⇒ :a τ-body-a)])
|
||
|
||
(define-for-syntax (procedure-type? τ)
|
||
(syntax-parse τ
|
||
[(~→ τ ...+) #t]
|
||
[_ #f]))
|
||
|
||
(define-typed-syntax (begin s ...) ≫
|
||
[⊢ s ≫ s- (⇒ :i τ1) (⇒ :o τ2) (⇒ :a τ3)] ...
|
||
------------------------------------------
|
||
[⊢ (begin- (void-) s- ...) (⇒ : (U)) (⇒ :i (U τ1 ...)) (⇒ :o (U τ2 ...)) (⇒ :a (U τ3 ...))])
|
||
|
||
(define-for-syntax (flat-type? τ)
|
||
(syntax-parse τ
|
||
[(~→ τ ...) #f]
|
||
[(~Field _) #f]
|
||
[(~Behavior _ _ _ _) #f]
|
||
[_ #t]))
|
||
|
||
(define-typed-syntax (unsafe-do rkt:expr ...) ≫
|
||
------------------------
|
||
[⊢ (let- () rkt ...) (⇒ : (U)) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))])
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;; Endpoints
|
||
|
||
(begin-for-syntax
|
||
(define-syntax-class asserted-or-retracted
|
||
#:datum-literals (asserted retracted)
|
||
(pattern (~or (~and asserted
|
||
(~bind [syndicate-kw #'syndicate:asserted]))
|
||
(~and retracted
|
||
(~bind [syndicate-kw #'syndicate:retracted]))))))
|
||
|
||
(define-typed-syntax on
|
||
[(on (~literal start) s) ≫
|
||
[⊢ s ≫ s- (⇒ :i τi) (⇒ :o τ-o) (⇒ :a τ-a)]
|
||
-----------------------------------
|
||
[⊢ (syndicate:on-start s-) (⇒ : (U)) (⇒ :i τi) (⇒ :o τ-o) (⇒ :a τ-a)]]
|
||
[(on (~literal stop) s) ≫
|
||
[⊢ s ≫ s- (⇒ :i τi) (⇒ :o τ-o) (⇒ :a τ-a)]
|
||
-----------------------------------
|
||
[⊢ (syndicate:on-stop s-) (⇒ : (U)) (⇒ :i τi) (⇒ :o τ-o) (⇒ :a τ-a)]]
|
||
[(on (a/r:asserted-or-retracted p) s) ≫
|
||
[⊢ p ≫ _ (⇒ : τp)]
|
||
#:with p- (compile-syndicate-pattern #'p)
|
||
#:with ([x:id τ:type] ...) (pat-bindings #'p)
|
||
[[x ≫ x- : τ] ... ⊢ s ≫ s- (⇒ :i τi) (⇒ :o τ-o) (⇒ :a τ-a)]
|
||
;; the type of subscriptions to draw assertions to the pattern
|
||
#:with pat-sub (replace-bind-and-discard-with-★ #'τp)
|
||
-----------------------------------
|
||
[⊢ (syndicate:on (a/r.syndicate-kw p-)
|
||
(let- ([x- x] ...) s-))
|
||
(⇒ : (U))
|
||
(⇒ :i (U τi τp))
|
||
(⇒ :o (U (Observe pat-sub) τ-o))
|
||
(⇒ :a τ-a)]])
|
||
|
||
;; FlattishType -> FlattishType
|
||
(define-for-syntax (replace-bind-and-discard-with-★ t)
|
||
(syntax-parse t
|
||
[(~Bind _)
|
||
(type-eval #'★)]
|
||
[~Discard
|
||
(type-eval #'★)]
|
||
[(~U τ ...)
|
||
(type-eval #`(U #,@(stx-map replace-bind-and-discard-with-★ #'(τ ...))))]
|
||
[(~Tuple τ ...)
|
||
(type-eval #`(Tuple #,@(stx-map replace-bind-and-discard-with-★ #'(τ ...))))]
|
||
[(~Observe τ)
|
||
(type-eval #`(Observe #,(replace-bind-and-discard-with-★ #'τ)))]
|
||
[(~Inbound τ)
|
||
(type-eval #`(Inbound #,(replace-bind-and-discard-with-★ #'τ)))]
|
||
[(~Outbound τ)
|
||
(type-eval #`(Outbound #,(replace-bind-and-discard-with-★ #'τ)))]
|
||
[(~constructor-type _ τ ...)
|
||
(make-cons-type t (stx-map replace-bind-and-discard-with-★ #'(τ ...)))]
|
||
[_ t]))
|
||
|
||
(define-typed-syntax (assert e:expr) ≫
|
||
[⊢ e ≫ e- (⇒ : τ:type)]
|
||
#:with τ-in (strip-? #'τ.norm)
|
||
-------------------------------------
|
||
[⊢ (syndicate:assert e-) (⇒ : (U)) (⇒ :i τ-in) (⇒ :o τ) (⇒ :a (U))])
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;; Expressions
|
||
|
||
(define-typed-syntax (tuple e:expr ...) ≫
|
||
[⊢ e ≫ e- (⇒ : τ)] ...
|
||
-----------------------
|
||
[⊢ (list 'tuple e- ...) (⇒ : (Tuple τ ...)) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))])
|
||
|
||
(define-typed-syntax (ref x:id) ≫
|
||
[⊢ x ≫ x- ⇒ (~Field τ)]
|
||
------------------------
|
||
[⊢ (x-) (⇒ : τ) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))])
|
||
|
||
(define-typed-syntax (λ [p s] ...) ≫
|
||
#:with (([x:id τ:type] ...) ...) (stx-map pat-bindings #'(p ...))
|
||
[[x ≫ x- : τ] ... ⊢ s ≫ s- (⇒ : τv) (⇒ :i τ1) (⇒ :o τ2) (⇒ :a τ3)] ...
|
||
;; REALLY not sure how to handle p/p-/p.match-pattern,
|
||
;; particularly w.r.t. typed terms that appear in p.match-pattern
|
||
[⊢ p ≫ _ ⇒ τ-p] ...
|
||
#:with (p- ...) (stx-map compile-match-pattern #'(p ...))
|
||
#:with (τ-in ...) (stx-map lower-pattern-type #'(τ-p ...))
|
||
--------------------------------------------------------------
|
||
;; TODO: add a catch-all error clause
|
||
[⊢ (match-lambda- [p- (let- ([x- x] ...) s-)] ...)
|
||
(⇒ : (→ (U τ-p ...) (Behavior (U τv ...) (U τ1 ...) (U τ2 ...) (U τ3 ...))))
|
||
(⇒ :i (U))
|
||
(⇒ :o (U))
|
||
(⇒ :a (U))])
|
||
|
||
;; FlattishType -> FlattishType
|
||
;; replaces (Bind τ) with τ and Discard with ★
|
||
(define-for-syntax (lower-pattern-type t)
|
||
(syntax-parse t
|
||
[(~Bind τ)
|
||
#'τ]
|
||
[~Discard
|
||
(type-eval #'★)]
|
||
[(~U τ ...)
|
||
(type-eval #`(U #,@(stx-map lower-pattern-type #'(τ ...))))]
|
||
[(~Tuple τ ...)
|
||
(type-eval #`(Tuple #,@(stx-map lower-pattern-type #'(τ ...))))]
|
||
[(~Observe τ)
|
||
(type-eval #`(Observe #,(lower-pattern-type #'τ)))]
|
||
[(~Inbound τ)
|
||
(type-eval #`(Inbound #,(lower-pattern-type #'τ)))]
|
||
[(~Outbound τ)
|
||
(type-eval #`(Outbound #,(lower-pattern-type #'τ)))]
|
||
[(~constructor-type _ τ ...)
|
||
(make-cons-type t (stx-map lower-pattern-type #'(τ ...)))]
|
||
[_ t]))
|
||
|
||
(define-typed-syntax (typed-app e_fn e_arg ...) ≫
|
||
[⊢ e_fn ≫ e_fn- (⇒ : (~→ τ_in:type ... (~Behavior τ-v τ-i τ-o τ-a)))]
|
||
#:fail-unless (stx-length=? #'[τ_in ...] #'[e_arg ...])
|
||
(num-args-fail-msg #'e_fn #'[τ_in ...] #'[e_arg ...])
|
||
[⊢ e_arg ≫ e_arg- (⇒ : τ_arg:type)] ...
|
||
;; #:do [(printf "~a\n" (stx-map type->str #'(τ_arg.norm ...)))
|
||
;; (printf "~a\n" (stx-map type->str #'(τ_in.norm ...) #;(stx-map lower-pattern-type #'(τ_in.norm ...))))]
|
||
#:fail-unless (stx-andmap <: #'(τ_arg.norm ...) (stx-map lower-pattern-type #'(τ_in.norm ...)))
|
||
"argument mismatch"
|
||
#:fail-unless (stx-andmap project-safe? #'(τ_arg.norm ...) #'(τ_in.norm ...))
|
||
"match error"
|
||
------------------------------------------------------------------------
|
||
[⊢ (#%app- e_fn- e_arg- ...) (⇒ : τ-v) (⇒ :i τ-i) (⇒ :o τ-o) (⇒ :a τ-a)])
|
||
|
||
;; it would be nice to abstract over these three
|
||
(define-typed-syntax (observe e:expr) ≫
|
||
[⊢ e ≫ e- (⇒ : τ)]
|
||
---------------------------------------------------------------------------
|
||
[⊢ (syndicate:observe e-) (⇒ : (Observe τ)) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))])
|
||
|
||
(define-typed-syntax (inbound e:expr) ≫
|
||
[⊢ e ≫ e- ⇒ τ]
|
||
---------------------------------------------------------------------------
|
||
[⊢ (syndicate:inbound e-) (⇒ : (Inbound τ)) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))])
|
||
|
||
(define-typed-syntax (outbound e:expr) ≫
|
||
[⊢ e ≫ e- ⇒ τ]
|
||
---------------------------------------------------------------------------
|
||
[⊢ (syndicate:outbound e-) (⇒ : (Outbound τ)) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))])
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;; Patterns
|
||
|
||
(define-typed-syntax (bind x:id τ:type) ≫
|
||
----------------------------------------
|
||
;; TODO: at some point put $ back in
|
||
[⊢ (void-) (⇒ : (Bind τ)) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))])
|
||
|
||
(define-typed-syntax discard
|
||
[_ ≫
|
||
--------------------
|
||
;; TODO: change void to _
|
||
[⊢ (void-) (⇒ : Discard) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))]])
|
||
|
||
;; pat -> ([Id Type] ...)
|
||
(define-for-syntax (pat-bindings stx)
|
||
(syntax-parse stx
|
||
#:datum-literals (bind tuple)
|
||
[(bind x:id τ:type)
|
||
#'([x τ])]
|
||
[(tuple p ...)
|
||
#:with (([x:id τ:type] ...) ...) (stx-map pat-bindings #'(p ...))
|
||
#'([x τ] ... ...)]
|
||
[(k:kons1 p)
|
||
(pat-bindings #'p)]
|
||
[(~constructor-exp cons p ...)
|
||
#:with (([x:id τ:type] ...) ...) (stx-map pat-bindings #'(p ...))
|
||
#'([x τ] ... ...)]
|
||
[_
|
||
#'()]))
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;; Primitives
|
||
|
||
;; hmmm
|
||
(define-primop + (→ Int Int (Behavior Int (U) (U) (U))))
|
||
(define-primop - (→ Int Int (Behavior Int (U) (U) (U))))
|
||
(define-primop * (→ Int Int (Behavior Int (U) (U) (U))))
|
||
#;(define-primop and (→ Bool Bool (Behavior Bool (U) (U) (U))))
|
||
(define-primop or (→ Bool Bool (Behavior Bool (U) (U) (U))))
|
||
(define-primop not (→ Bool (Behavior Bool (U) (U) (U))))
|
||
(define-primop < (→ Int Int (Behavior Bool (U) (U) (U))))
|
||
(define-primop > (→ Int Int (Behavior Bool (U) (U) (U))))
|
||
(define-primop <= (→ Int Int (Behavior Bool (U) (U) (U))))
|
||
(define-primop >= (→ Int Int (Behavior Bool (U) (U) (U))))
|
||
(define-primop = (→ Int Int (Behavior Bool (U) (U) (U))))
|
||
|
||
(define-typed-syntax (/ e1 e2) ≫
|
||
[⊢ e1 ≫ e1- (⇐ : Int)]
|
||
[⊢ e2 ≫ e2- (⇐ : Int)]
|
||
------------------------
|
||
[⊢ (exact-truncate- (/- e1- e2-)) (⇒ : Int) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))])
|
||
|
||
;; for some reason defining `and` as a prim op doesn't work
|
||
(define-typed-syntax (and e ...) ≫
|
||
[⊢ e ≫ e- (⇐ : Bool)] ...
|
||
------------------------
|
||
[⊢ (and- e- ...) (⇒ : Bool) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))])
|
||
|
||
(define-typed-syntax (equal? e1:expr e2:expr) ≫
|
||
[⊢ e1 ≫ e1- (⇒ : τ1:type)]
|
||
#:fail-unless (flat-type? #'τ1.norm)
|
||
(format "equality only available on flat data; got ~a" (type->str #'τ1))
|
||
[⊢ e2 ≫ e2- (⇐ : τ1)]
|
||
---------------------------------------------------------------------------
|
||
[⊢ (equal?- e1- e2-) (⇒ : Bool) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))])
|
||
|
||
(define-typed-syntax (displayln e:expr) ≫
|
||
[⊢ e ≫ e- ⇒ τ]
|
||
---------------
|
||
[⊢ (displayln- e-) (⇒ : (U)) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))])
|
||
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;; Basic Values
|
||
|
||
(define-typed-syntax #%datum
|
||
[(_ . n:integer) ≫
|
||
----------------
|
||
[⊢ (#%datum- . n) (⇒ : Int) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))]]
|
||
[(_ . b:boolean) ≫
|
||
----------------
|
||
[⊢ (#%datum- . b) (⇒ : Bool) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))]]
|
||
[(_ . s:string) ≫
|
||
----------------
|
||
[⊢ (#%datum- . s) (⇒ : String) (⇒ :i (U)) (⇒ :o (U)) (⇒ :a (U))]])
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;; Utilities
|
||
|
||
#;(define-syntax (begin/void-default stx)
|
||
(syntax-parse stx
|
||
[(_)
|
||
(syntax/loc stx (void))]
|
||
[(_ expr0 expr ...)
|
||
(syntax/loc stx (begin- expr0 expr ...))]))
|
||
|
||
|
||
|
||
(define-typed-syntax (print-type e) ≫
|
||
[⊢ e ≫ e- ⇒ τ]
|
||
#:do [(displayln (type->str #'τ))]
|
||
----------------------------------
|
||
[⊢ e- ⇒ τ])
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;; Extensions
|
||
|
||
(define-syntax (match stx)
|
||
(syntax-parse stx
|
||
[(match e [pat body] ...+)
|
||
(syntax/loc stx
|
||
(typed-app (λ [pat body] ...) e))]))
|
||
|
||
(define-syntax (if stx)
|
||
(syntax-parse stx
|
||
[(if e1 e2 e3)
|
||
(syntax/loc stx
|
||
(typed-app (λ [#f e3] [discard e2]) e1))]))
|
||
|
||
(define-typed-syntax (cond [pred:expr s] ...+) ≫
|
||
[⊢ pred ≫ pred- (⇐ : Bool)] ...
|
||
[⊢ s ≫ s- (⇒ :i τ-i) (⇒ :o τ-o) (⇒ :a τ-a)] ...
|
||
------------------------------------------------
|
||
[⊢ (cond- [pred- s-] ...) (⇒ : (U)) (⇒ :i (U τ-i ...)) (⇒ :o (U τ-o ...)) (⇒ :a (U τ-a ...))])
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;; Tests
|
||
|
||
;; WANTED UNIT TESTS
|
||
;; (check-true (<: #'(U String) #'String))
|
||
;; (check-true (<: #'(U (U)) #'String))
|
||
;; (check-true (<: #'(Actor (U (U))) #'(Actor String))
|
||
;; (check-true (<: #'(Actor (U (U))) #'(Actor (U (Observe ★) String)))
|
||
;; (check-true (<: ((current-type-eval) #'(U (U) (U))) ((current-type-eval) #'(U))))
|
||
;; (check-false (<: ((current-type-eval) #'(Actor (U (Observe ★) String Int)))
|
||
;; ((current-type-eval) #'(Actor (U (Observe ★) String)))))
|
||
;; (check-true (<: (Actor (U (Observe ★) String)) (Actor (U (Observe ★) String)))
|
||
|
||
(module+ test
|
||
(check-type 1 : Int)
|
||
|
||
(check-type (tuple 1 2 3) : (Tuple Int Int Int))
|
||
|
||
(check-type (tuple discard 1 (bind x Int)) : (Tuple Discard Int (Bind Int)))
|
||
|
||
#;(check-type (λ [(bind x Int) (begin)]) : (Case [→ (Bind Int) (Facet (U) (U) (U))]))
|
||
#;(check-true (void? ((λ [(bind x Int) (begin)]) 1))))
|
||
|
||
(define-syntax (test-syntax-class stx)
|
||
(syntax-parse stx
|
||
[(_ e class:id)
|
||
#`(let ()
|
||
(define-syntax (test-result stx)
|
||
(syntax-parse e
|
||
[(~var _ class) #'#t]
|
||
[_ #'#f]))
|
||
(test-result))]))
|