Made any->isyntax and similar functions configurable, to choose how non-syntax and non-sexp cases should be handled
This commit is contained in:
Georges Dupéron
parent
dc1561e595
commit
503044660b
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@ -73,27 +73,29 @@
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(define-type ISyntax (ISyntaxOf Nothing Nothing))
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(define-type ISyntax-E (ISyntaxOf-E Nothing Nothing))
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(define-type (Result A) (U (Pairof A (U 'modified 'unmodified))
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(Pairof #f #f)))
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(define Result#f (cons #f #f))
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(: syntax->isyntax (∀ (A B) (→ (Syntaxof Any)
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(→ Any (Values A (U 'modified 'unmodified #;#f)))
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(→ Any (Values B (U 'modified 'unmodified #;#f)))
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(Values (ISyntaxOf A B) ;; TODO: change to (SyntaxOf (ISnyntaxOf-E …))
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(U 'modified 'unmodified #;#f)))))
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(→ Any (Result A))
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(→ Any (Result B))
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(U (Result (ISyntaxOf A B)))))) ;; TODO: change to (SyntaxOf (ISnyntaxOf-E …))
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(define (syntax->isyntax stx nstx nsexp)
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(define e (syntax-e stx))
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(define-values (e* status) (any->isyntax-e e nstx nsexp))
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(match-define (cons e* status) (any->isyntax-e e nstx nsexp))
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(case status
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[(unmodified)
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(values (unsafe-cast e (ISyntaxOf A B)) 'unmodified)]
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(cons (unsafe-cast e (ISyntaxOf A B)) 'unmodified)]
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[(modified)
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(values (datum->syntax* stx e* stx stx) 'modified)]
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#;[(#f)
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(values #f #f)]))
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(cons (datum->syntax* stx e* stx stx) 'modified)]
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[(#f)
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Result#f]))
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(: any->isyntax (∀ (A B) (→ Any
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(→ Any (Values A (U 'modified 'unmodified #;#f)))
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(→ Any (Values B (U 'modified 'unmodified #;#f)))
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(Values (ISyntaxOf A B)
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(U 'modified 'unmodified #;#f)))))
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(→ Any (Result A))
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(→ Any (Result B))
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(Result (ISyntaxOf A B)))))
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(define (any->isyntax e nstx nsexp)
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(if (syntax? e)
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(syntax->isyntax e nstx nsexp)
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@ -101,25 +103,30 @@
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(: listof-any->listof-isyntax
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(∀ (A B) (→ (Listof Any)
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(→ Any (Values A (U 'modified 'unmodified #;#f)))
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(→ Any (Values B (U 'modified 'unmodified #;#f)))
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(Pairof (Listof (ISyntaxOf A B))
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(U 'modified 'unmodified #;#f)))))
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(→ Any (Result A))
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(→ Any (Result B))
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(Result (Listof (ISyntaxOf A B))))))
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(define (listof-any->listof-isyntax e nstx nsexp)
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(define e+status*
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(map (λ ([eᵢ : Any])
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(let-values ([(eᵢ* status) (any->isyntax eᵢ nstx nsexp)])
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(cons eᵢ* status)))
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e))
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(define e* (map car e+status*))
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(define status* (map cdr e+status*))
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(define e*+status
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(foldr (λ ([eᵢ : Any] [acc : (Result (Listof (ISyntaxOf A B)))])
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(match-let ([(cons eᵢ* status) (any->isyntax eᵢ nstx nsexp)])
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(cond
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[(andmap (curry eq? 'unmodified) status*)
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(cons (unsafe-cast e (Listof (ISyntaxOf A B))) 'unmodified)]
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#;[(ormap (curry eq? #f) status*)
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(cons #f #f)]
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[(and (eq? status 'unmodified)
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(eq? (cdr acc) 'unmodified))
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(cons (cons eᵢ* (car acc)) 'unmodified)]
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[(or (eq? status #f)
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(eq? (cdr acc) #f))
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Result#f]
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[else
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(cons e* 'modified)]))
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(cons (cons eᵢ* (car acc)) 'modified)])))
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(cons '() 'unmodified)
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e))
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(define e* (car e*+status))
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(define status (cdr e*+status))
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(case status
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[(unmodified) (cons (unsafe-cast e (Listof (ISyntaxOf A B))) 'unmodified)]
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[(modified) (cons e* 'modified)]
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[(#f) Result#f]))
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#;(: handle-pair (case→ (→ (Listof Any)
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(Values (Listof Syntax-E)
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@ -142,117 +149,103 @@
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(U 'unmodified 'modified)))))
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(: handle-pair (∀ (A B) (→ (U (Pairof Any (Listof Any))
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(Pairof Any (Rec L (U Any (Pairof Any L)))))
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(→ Any (Values A (U 'modified 'unmodified #;#f)))
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(→ Any (Values B (U 'modified 'unmodified #;#f)))
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(Values (Pairof (ISyntaxOf A B)
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(→ Any (Result A))
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(→ Any (Result B))
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(Result (Pairof (ISyntaxOf A B)
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(Rec L (U (ISyntaxOf A B)
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Null
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(Pairof (ISyntaxOf A B)
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L))))
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(U 'unmodified 'modified)))))
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L))))))))
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(define (handle-pair e nstx nsexp)
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(let-values ([(car* status-car)
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(any->isyntax (car e) nstx nsexp)])
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(define car*+status (any->isyntax (car e) nstx nsexp))
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(define car* (car car*+status))
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(define status-car (cdr car*+status))
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(cond
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[(pair? (cdr e))
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(let-values ([(cdr* status-cdr)
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(match-let ([(cons cdr* status-cdr)
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(handle-pair (cdr e) nstx nsexp)])
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(cond
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#;[(and (eq? status-car 'unmodified)
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(eq? status-cdr 'unmodified))
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(values (unsafe-cast e (Pairof ISyntax
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(cons (unsafe-cast e (Pairof ISyntax
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(Rec L (U ISyntax
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Null
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(Pairof ISyntax L)))))
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'unmodified)]
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#;[(or (eq? status-car #f)
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[(or (eq? status-car #f)
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(eq? status-cdr #f))
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(values #f #f)]
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Result#f]
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[else
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(values (cons car* cdr*) 'modified)]))]
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(cons (cons car* cdr*) 'modified)]))]
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[(null? (cdr e))
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(cond
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#;[(eq? status-car 'unmodified)
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(values (unsafe-cast e (Pairof ISyntax Null)) 'unmodified)]
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#;[(eq? status-car #f)
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(values #f #f)]
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(cons (unsafe-cast e (Pairof ISyntax Null)) 'unmodified)]
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[(eq? status-car #f)
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Result#f]
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[else
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(values (cons car* (cdr e)) 'modified)])]
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(cons (ann (cons car* (cdr e))
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(Pairof (ISyntaxOf A B)
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(Rec L (U (ISyntaxOf A B)
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Null
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(Pairof (ISyntaxOf A B)
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L)))))
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'modified)])]
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[else
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(let-values ([(cdr* status-cdr)
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(any->isyntax (cdr e) nstx nsexp)])
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(match-let ([(cons cdr* status-cdr) (any->isyntax (cdr e) nstx nsexp)])
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(cond
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#;[(and (eq? status-car 'unmodified)
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(eq? status-cdr 'unmodified))
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(values (unsafe-cast e (Pairof ISyntax
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(cons (unsafe-cast e (Pairof ISyntax
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(Rec L (U ISyntax
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Null
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(Pairof ISyntax L)))))
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'unmodified)]
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#;[(or (eq? status-car #f)
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[(or (eq? status-car #f)
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(eq? status-cdr #f))
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(values #f #f)]
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Result#f]
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[else
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(values (cons car* cdr*) 'modified)]))])
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#;[(null? e)
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(values e 'unmodified)]
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#;[else
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(any->isyntax e)]))
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#;(let*-values ([(car* status-car)
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(any->isyntax (car e))]
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[(cdr* status-cdr)
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(any->isyntax (cdr e))])
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(cond
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#;[(and (eq? status-car 'unmodified)
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(eq? status-cdr 'unmodified))
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(values (unsafe-cast e (ISyntax-E A)) 'unmodified)]
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#;[(or (eq? status-car #f)
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(eq? status-cdr #f))
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(values #f #f)]
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[else
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(values (cons car* cdr*) 'modified)]))
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(cons (cons car* cdr*) 'modified)]))]))
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(: any->isyntax-e (∀ (A B) (→ Any
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(→ Any (Values A (U 'modified 'unmodified #;#f)))
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(→ Any (Values B (U 'modified 'unmodified #;#f)))
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(Values (ISyntaxOf-E A B)
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(U 'modified 'unmodified #;#f)))))
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(→ Any (Result A))
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(→ Any (Result B))
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(Result (ISyntaxOf-E A B)))))
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(define (any->isyntax-e e nstx nsexp)
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(cond
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[(boolean? e) (values e 'unmodified)]
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[(char? e) (values e 'unmodified)]
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[(number? e) (values e 'unmodified)]
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[(keyword? e) (values e 'unmodified)]
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[(null? e) (values e 'unmodified)]
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[(boolean? e) (cons e 'unmodified)]
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[(char? e) (cons e 'unmodified)]
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[(number? e) (cons e 'unmodified)]
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[(keyword? e) (cons e 'unmodified)]
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[(null? e) (cons e 'unmodified)]
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[(string? e) (if (immutable? e)
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(values e 'unmodified)
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(values (string->immutable-string e) 'modified))]
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[(symbol? e) (values e 'unmodified)]
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[(box? e) (let-values ([(u* status) (any->isyntax (unbox e) nstx nsexp)])
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(cons e 'unmodified)
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(cons (string->immutable-string e) 'modified))]
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[(symbol? e) (cons e 'unmodified)]
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[(box? e) (match-let ([(cons u* status) (any->isyntax (unbox e) nstx nsexp)])
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(case status
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[(unmodified)
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;(if (immutable? e)
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;(values (unsafe-cast e (Sexpof A)) 'unmodified)
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(values (box-immutable u*) 'modified);)
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(cons (box-immutable u*) 'modified);)
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]
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[(modified)
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(values (box-immutable u*) 'modified)]
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#;[(#f)
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(values #f #f)]))]
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(cons (box-immutable u*) 'modified)]
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[(#f)
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Result#f]))]
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[(pair? e) (handle-pair e nstx nsexp)]
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[(vector? e) (match-let ([(cons vs* status)
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(listof-any->listof-isyntax (vector->list e) nstx nsexp)])
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(case status
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[(unmodified)
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(if (immutable? e)
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(values (unsafe-cast e (ISyntaxOf-E A B))
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(cons (unsafe-cast e (ISyntaxOf-E A B))
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'unmodified)
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(values (apply vector-immutable vs*)
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(cons (apply vector-immutable vs*)
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'modified))]
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[(modified)
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(values (apply vector-immutable vs*) 'modified)]
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#;[(#f)
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(values #f #f)]))]
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(cons (apply vector-immutable vs*) 'modified)]
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[(#f)
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Result#f]))]
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[else
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(nsexp e)]))
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