('if 'if)
('let 'let)
('lambda 'lambda)
+ ('case 'case)
('closure 'closure) ; only available in codegen
('static-string 'static-string) ; only available in codegen
('stack 'stack) ; only available in codegen (tag that value is passed via stack)
('app (map f x))
('lambda `(lambda ,(lambda-args x) ,(f (lambda-body x))))
('if `(if ,@(map f (cdr x))))
+ ('case `(case ,(f (case-expr x))
+ ,@(map (lambda (x)
+ (list (car x) (f (cadr x))))
+ (case-cases x))))
('stack `(stack ,(cadr x) ,(f (caddr x))))
(else x)))
(inner (lambda-body x)))]
['if (append (f x)
(flat-map inner (cdr x)))]
+ ['case (append (f x)
+ (inner (case-expr x))
+ (flat-map inner (map cadr (case-cases x))))]
['stack (append (f x)
(inner (caddr x)))]
[else (f x)]))
(define let-bindings cadr)
(define let-body cddr)
+(define case-expr cadr)
+(define case-cases cddr)
+
; (let ([(foo a b) (foo 123 345)]) a)
; |
; v
; |
; v
; (foo . ((A foo constructor) . (abs Int (abs Bool A))))
- ; (foo~0 . ((A foo 0) . (abs A Int)))
- ; (foo~1 . ((A foo 1) . (abs A Bool)))
+ ; (foo~0 . ((A foo 0 Int) . (abs A Int)))
+ ; (foo~1 . ((A foo 1 Bool) . (abs A Bool)))
; (bar . ((A bar constructor) . (abs Bool A)))
- ; (bar~0 . ((A bar 0) . (abs A Bool)))
+ ; (bar~0 . ((A bar 0 Bool) . (abs A Bool)))
; ------+-------------------------------------
; tor | info | type
(fold-right (lambda (x acc) `(abs ,x ,acc)) t products))
(define (destructor ctor-name prod-type part-type index)
- (let ([name (dtor-name ctor-name index)])
- (cons name (cons (list prod-type ctor-name index) `(abs ,prod-type ,part-type)))))
+ (let* ([name (dtor-name ctor-name index)]
+ [info (list prod-type ctor-name index part-type)])
+ (cons name (cons info `(abs ,prod-type ,part-type)))))
(let ([type-name (car data-layout)]
[ctors (cdr data-layout)])