- ikarus interpreter (in lab directory) is now capable of
bootstrapping ikarus
This commit is contained in:
Abdulaziz Ghuloum
parent
3207e14fca
commit
fda2817a73
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@ -1,202 +1,468 @@
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(import (ikarus) (match))
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(import (ikarus))
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(define (make-annotated-procedure ann proc)
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(import (ikarus system $codes))
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($make-annotated-procedure ann proc))
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(define (compile-expr expr env)
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(define who 'compile-expr)
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(define (do-letrec lhs* rhs* body env)
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(let-values ([(env n) (extend-env lhs* env)])
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(let ([rhs* (map (lambda (x) (compile-expr x env)) rhs*)]
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[body (compile-expr body env)])
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(lambda (env)
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(let ([vec (make-vector n)])
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(let ([env (cons vec env)])
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(let f ([i 0] [rhs* rhs*])
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(if (null? rhs*)
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(body env)
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(begin
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(vector-set! vec i ((car rhs*) env))
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(f (+ i 1) (cdr rhs*)))))))))))
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(define (do-library-letrec lhs* loc* rhs* body env)
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(let-values ([(env n) (extend-env lhs* env)])
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(let ([rhs* (map (lambda (x) (compile-expr x env)) rhs*)]
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[body (compile-expr body env)])
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(lambda (env)
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(let ([vec (make-vector n)])
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(let ([env (cons vec env)])
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(let f ([i 0] [rhs* rhs*] [loc* loc*])
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(if (null? rhs*)
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(body env)
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(let ([v ((car rhs*) env)])
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(vector-set! vec i v)
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(global-set! (car loc*) v)
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(f (+ i 1) (cdr rhs*) (cdr loc*)))))))))))
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(define (lexical-set! env i j v)
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(vector-set! (list-ref env i) j v))
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(define (lexical-ref env i j)
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(vector-ref (list-ref env i) j))
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(define (global-set! loc v)
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(set-symbol-value! loc v))
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(define (global-ref loc)
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(top-level-value loc))
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(define (extend-env ls env)
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(define (properize x)
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(cond
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[(null? x) '()]
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[(pair? x) (cons (car x) (properize (cdr x)))]
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[else (list x)]))
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(let ([v (list->vector (properize ls))])
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(values (cons v env) (vector-length v))))
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(define (lookup x env)
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(let f ([i 0] [env env])
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(cond
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[(null? env) `(global ,x)]
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[else
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(let g ([j 0] [rib (car env)])
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(cond
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[(= j (vector-length rib))
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(f (+ i 1) (cdr env))]
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[(eq? x (vector-ref rib j)) `(lexical ,i ,j)]
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[else (g (+ j 1) rib)]))])))
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(define (compile-case-lambda ae fml* expr* env k)
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(define (compile-clause fmls expr k)
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(cond
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[(list? fmls)
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(let-values ([(env n) (extend-env fmls env)])
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(let ([expr (compile-expr expr env)])
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(lambda (env args argcount)
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(if (= n argcount)
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(expr (cons (list->vector args) env))
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(k env args argcount)))))]
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[else
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(let-values ([(env n) (extend-env fmls env)])
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(let ([expr (compile-expr expr env)])
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(lambda (env args argcount)
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(if (>= argcount n)
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(let ([vec (make-vector n)])
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(let f ([ls args] [i 0])
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(cond
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[(= i (- n 1))
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(vector-set! vec i ls)]
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[else
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(vector-set! vec i (car ls))
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(f (cdr ls) (+ i 1))]))
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(expr (cons vec env)))
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(k env args argcount)))))]))
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(let ([proc
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(let f ([fml* fml*] [expr* expr*])
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(module (click-ring unclick-ring get-traces mark-reduction!
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last-trace reset-ring)
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(define outer-ring-size 5)
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(define inner-ring-size 5)
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(define-struct cell (prev next content))
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(define (make-ring n f)
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(cond
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[(= n 1)
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(let ([cell (make-cell #f #f (f))])
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(set-cell-prev! cell cell)
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(set-cell-next! cell cell)
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cell)]
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[else
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(let ([ring (make-ring (- n 1) f)])
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(let ([next (cell-next ring)])
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(let ([cell (make-cell ring next (f))])
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(set-cell-prev! next cell)
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(set-cell-next! ring cell)
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cell)))]))
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(define (make-double-ring n m)
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(make-ring n (lambda () (make-ring m (lambda () #f)))))
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(define (ring->list x0)
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(let f ([x x0])
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(cons (cell-content x)
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(let ([x (cell-prev x)])
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(if (eq? x x0)
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'()
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(f x))))))
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(define (get-traces)
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(map ring->list (ring->list step-ring)))
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(define step-ring #f)
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(define (reset-ring)
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(set! step-ring (make-double-ring outer-ring-size inner-ring-size)))
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(define (last-trace)
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(cell-content (cell-content step-ring)))
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(define (click-ring)
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(let ([x (cell-next step-ring)])
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(set! step-ring x)
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(let ([y (cell-content x)])
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(set-cell-content! y #f))))
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(define (unclick-ring)
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(set-cell-content! (cell-content step-ring) #f)
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(set! step-ring (cell-prev step-ring)))
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(define (mark-reduction! x)
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(let ([y (cell-next (cell-content step-ring))])
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(set-cell-content! y x)
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(set-cell-content! step-ring y)))
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)
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(define (primitive-value x)
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(import (ikarus system $codes))
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(import (ikarus system $structs))
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(import (ikarus system $flonums))
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(import (ikarus system $bignums))
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(case x
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[($code-reloc-vector) (lambda (x) ($code-reloc-vector x))]
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[($code-freevars) (lambda (x) ($code-freevars x))]
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[($code-size) (lambda (x) ($code-size x))]
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[($code-annotation) (lambda (x) ($code-annotation x))]
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[($code-ref) (lambda (x i) ($code-ref x i))]
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[($code-set!) (lambda (x i v) ($code-set! x i v))]
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[($code->closure) (lambda (x) ($code->closure x))]
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[($closure-code) (lambda (x) ($closure-code x))]
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[($struct)
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(case-lambda
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[(x0)
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($struct x0)]
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[(x0 x1)
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($struct x0 x1)]
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[(x0 x1 x2)
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($struct x0 x1 x2)]
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[(x0 x1 x2 x3)
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($struct x0 x1 x2 x3)]
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[(x0 x1 x2 x3 x4)
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($struct x0 x1 x2 x3 x4)]
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[(x0 x1 x2 x3 x4 x5)
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($struct x0 x1 x2 x3 x4 x5)]
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[(x0 x1 x2 x3 x4 x5 x6)
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($struct x0 x1 x2 x3 x4 x5 x6)]
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[(x0 x1 x2 x3 x4 x5 x6 x7)
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($struct x0 x1 x2 x3 x4 x5 x6 x7)]
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[(x0 x1 x2 x3 x4 x5 x6 x7 x8)
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($struct x0 x1 x2 x3 x4 x5 x6 x7 x8)]
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[(x0 x1 x2 x3 x4 x5 x6 x7 x8 x9)
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($struct x0 x1 x2 x3 x4 x5 x6 x7 x8 x9)]
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[(x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10)
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($struct x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10)]
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[(x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11)
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($struct x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11)]
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)]
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[($struct-set!) struct-set!]
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[($struct-ref) struct-ref]
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[($annotated-procedure-annotation)
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(lambda (x) ($annotated-procedure-annotation x))]
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[($char<=) char<=?]
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[($string-ref) string-ref]
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[($flonum-u8-ref)
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(lambda (x i)
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(case i
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[(0) ($flonum-u8-ref x 0)]
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[(1) ($flonum-u8-ref x 1)]
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[(2) ($flonum-u8-ref x 2)]
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[(3) ($flonum-u8-ref x 3)]
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[(4) ($flonum-u8-ref x 4)]
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[(5) ($flonum-u8-ref x 5)]
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[(6) ($flonum-u8-ref x 6)]
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[(7) ($flonum-u8-ref x 7)]
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[else (error 'flonum-u8-ref "invalid index" i)]))]
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[($bignum-positive?) positive?]
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[($bignum-byte-ref) (lambda (x i) ($bignum-byte-ref x i))]
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[($bignum-size) (lambda (x) ($bignum-size x))]
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[else (system-value x)]))
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(define core-interpret
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(let ()
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(define who 'interpret)
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(define (lexical-set! env i j v)
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(vector-set! (list-ref env i) j v))
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(define (lexical-ref env i j)
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(vector-ref (list-ref env i) j))
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(define (global-set! loc v)
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(set-symbol-value! loc v))
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(define (global-ref loc)
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(top-level-value loc))
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(define (extend-env ls env)
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(define (properize x)
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(cond
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[(null? x) '()]
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[(pair? x) (cons (car x) (properize (cdr x)))]
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[else (list x)]))
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(let ([v (list->vector (properize ls))])
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(values (cons v env) (vector-length v))))
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(define (lookup x env)
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(let f ([i 0] [env env])
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(cond
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[(null? env) `(global ,x)]
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[else
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(let g ([j 0] [rib (car env)])
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(cond
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[(null? fml*) k]
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[else
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(compile-clause (car fml*) (car expr*)
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(f (cdr fml*) (cdr expr*)))]))])
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(lambda (env)
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(make-annotated-procedure
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(cons #f
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(if (annotation? ae)
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(annotation-source ae)
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'#f))
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(lambda args
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(proc env args (length args)))))))
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(match expr
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[(quote ,x) (lambda (env) x)]
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[,var (guard (gensym? var))
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(let ([var (lookup var env)])
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(match var
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[(lexical ,i ,j)
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(lambda (env)
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(lexical-ref env i j))]
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[(global ,loc)
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(lambda (env)
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(global-ref loc))]
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[,_ (die who "invalid variable" var)]))]
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[(set! ,lhs ,[rhs])
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(let ([lhs (lookup lhs env)])
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(match lhs
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[(lexical ,i ,j)
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(lambda (env)
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(lexical-set! env i j (rhs env)))]
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[(global ,loc)
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(lambda (env)
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(global-set! loc (rhs env)))]
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[,_ (die who "invalid set! target" lhs)]))]
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[(if ,[e0] ,[e1] ,[e2])
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(lambda (env)
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(if (e0 env) (e1 env) (e2 env)))]
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[(begin ,[e] ,[e*] ...)
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(let ([e* (cons e e*)])
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(lambda (env)
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(for-each (lambda (e) (e env)) e*)))]
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[(annotated-case-lambda ,ae [,fml* ,expr*] ...)
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(compile-case-lambda ae fml* expr* env
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(lambda (env args argcount)
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(assertion-violation 'apply
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"incorrect number of arguments"
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args)))]
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[(case-lambda [,fml* ,expr*] ...)
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(compile-case-lambda #f fml* expr* env
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(lambda (env args argcount)
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(assertion-violation 'apply
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"incorrect number of arguments"
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args)))]
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[(lambda ,fmls ,body)
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(compile-expr `(case-lambda [,fmls ,body]) env)]
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[(letrec ([,lhs* ,rhs*] ...) ,body)
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(do-letrec lhs* rhs* body env)]
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[(letrec* ([,lhs* ,rhs*] ...) ,body)
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(do-letrec lhs* rhs* body env)]
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[(library-letrec* ([,lhs* ,loc* ,rhs*] ...) ,body)
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(do-library-letrec lhs* loc* rhs* body env)]
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[(primitive ,x)
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(let ([v (system-value x)])
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(lambda (env) v))]
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[(,[e] ,[e*] ...)
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(lambda (env)
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(apply (e env) (map (lambda (e) (e env)) e*)))]
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[,x (die who "invalid expression" x)]))
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[(= j (vector-length rib))
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(f (+ i 1) (cdr env))]
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[(eq? x (vector-ref rib j)) `(lexical ,i ,j)]
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[else (g (+ j 1) rib)]))])))
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(define (get-fmls x args)
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(define (matching? fmls args)
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(cond
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[(null? fmls) (null? args)]
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[(pair? fmls) (and (pair? args) (matching? (cdr fmls) (cdr args)))]
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[else #t]))
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(define (get-cls* x)
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(if (pair? x)
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(case (car x)
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[(case-lambda) (cdr x)]
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[(annotated-case-lambda) (cddr x)]
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[else '()])
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'()))
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(let f ([cls* (get-cls* x)])
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(cond
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[(null? cls*) #f]
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[(matching? (caar cls*) args)
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(caar cls*)]
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[else (f (cdr cls*))])))
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(define (compile-letrec* binding* body env ctxt tail?)
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(let ([lhs* (map car binding*)]
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[rhs* (map cadr binding*)])
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(let-values ([(env n) (extend-env lhs* env)])
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(let ([rhs* (map (lambda (lhs rhs)
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(compile-expr rhs env lhs #f))
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lhs* rhs*)]
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[body (compile-expr body env ctxt tail?)])
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(lambda (env)
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(let ([vec (make-vector n)])
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(let ([env (cons vec env)])
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(let f ([i 0] [rhs* rhs*])
|
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(if (null? rhs*)
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(body env)
|
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(begin
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(vector-set! vec i ((car rhs*) env))
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(f (+ i 1) (cdr rhs*))))))))))))
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(define (compile-library-letrec* binding* body env ctxt tail?)
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(let ([lhs* (map car binding*)]
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[loc* (map cadr binding*)]
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[rhs* (map caddr binding*)])
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(let-values ([(env n) (extend-env lhs* env)])
|
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(let ([rhs* (map (lambda (lhs rhs)
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(compile-expr rhs env lhs #f))
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lhs* rhs*)]
|
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[body (compile-expr body env ctxt tail?)])
|
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(lambda (env)
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(let ([vec (make-vector n)])
|
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(let ([env (cons vec env)])
|
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(let f ([i 0] [rhs* rhs*] [loc* loc*])
|
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(if (null? rhs*)
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(body env)
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(let ([v ((car rhs*) env)])
|
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(vector-set! vec i v)
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(global-set! (car loc*) v)
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(f (+ i 1) (cdr rhs*) (cdr loc*))))))))))))
|
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(define (compile-case-lambda ae binding* env ctxt)
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(define (compile-clause fmls expr k)
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(let-values ([(env n) (extend-env fmls env)])
|
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(let ([expr (compile-expr expr env
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(if (pair? ctxt) (car ctxt) #f)
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#t)])
|
||||
(cond
|
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[(list? fmls)
|
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(lambda (env args argcount)
|
||||
(if (= n argcount)
|
||||
(expr (cons (list->vector args) env))
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(k env args argcount)))]
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[else
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(lambda (env args argcount)
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(let ([n1 (- n 1)])
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(if (>= argcount n1)
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(let ([vec (make-vector n)])
|
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(let f ([ls args] [i 0])
|
||||
(cond
|
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[(= i n1)
|
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(vector-set! vec i ls)]
|
||||
[else
|
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(vector-set! vec i (car ls))
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(f (cdr ls) (+ i 1))]))
|
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(expr (cons vec env)))
|
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(k env args argcount))))]))))
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(let ([proc
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(let f ([binding* binding*])
|
||||
(cond
|
||||
[(null? binding*)
|
||||
(lambda (env args argcount)
|
||||
(assertion-violation 'apply
|
||||
"incorrect number of arguments"
|
||||
args))]
|
||||
[else
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||||
(let ([b (car binding*)])
|
||||
(compile-clause (car b) (cadr b)
|
||||
(f (cdr binding*))))]))])
|
||||
(lambda (env)
|
||||
(make-annotated-procedure
|
||||
(cons
|
||||
(and (symbol? ctxt) ctxt)
|
||||
(and (annotation? ae) (annotation-source ae)))
|
||||
(lambda args
|
||||
(proc env args (length args)))))))
|
||||
(define (compile-var expr env)
|
||||
(let ([x (lookup expr env)])
|
||||
(case (car x)
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[(lexical)
|
||||
(let ([i (cadr x)] [j (caddr x)])
|
||||
(lambda (env)
|
||||
(lexical-ref env i j)))]
|
||||
[(global)
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(let ([loc (cadr x)])
|
||||
(lambda (env)
|
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(global-ref loc)))]
|
||||
[else (die who "invalid value" x)])))
|
||||
(define (compile-set! lhs rhs env)
|
||||
(let ([rhs (compile-expr rhs env lhs #f)]
|
||||
[x (lookup lhs env)])
|
||||
(case (car x)
|
||||
[(lexical)
|
||||
(let ([i (cadr x)] [j (caddr x)])
|
||||
(lambda (env)
|
||||
(lexical-set! env i j (rhs env))))]
|
||||
[(global)
|
||||
(let ([loc (cadr x)])
|
||||
(lambda (env)
|
||||
(global-set! loc (rhs env))))]
|
||||
[else (die who "invalid set! target" lhs)])))
|
||||
(define (compile-if e0 e1 e2 env ctxt tail?)
|
||||
(let ([e0 (compile-expr e0 env #f #f)]
|
||||
[e1 (compile-expr e1 env ctxt tail?)]
|
||||
[e2 (compile-expr e2 env ctxt tail?)])
|
||||
(lambda (env)
|
||||
(if (e0 env) (e1 env) (e2 env)))))
|
||||
(define (compile-begin e e* env ctxt tail?)
|
||||
(cond
|
||||
[(null? e*) (compile-expr e env ctxt tail?)]
|
||||
[else
|
||||
(let ([e0 (compile-expr e env #f #f)]
|
||||
[e* (compile-begin (car e*) (cdr e*) env ctxt tail?)])
|
||||
(lambda (env) (e0 env) (e* env)))]))
|
||||
(define (get-src/expr ae)
|
||||
(if (annotation? ae)
|
||||
(values (annotation-source ae) (annotation-stripped ae))
|
||||
(values #f (syntax->datum ae))))
|
||||
(define (compile-tail-call ae e e* env ctxt)
|
||||
(let ([e (compile-expr e env (list ctxt) #f)]
|
||||
[fmls (get-fmls e e*)])
|
||||
(let ([e*
|
||||
(let f ([e* e*] [fmls fmls])
|
||||
(cond
|
||||
[(pair? fmls)
|
||||
(cons
|
||||
(compile-expr (car e*) env (car fmls) #f)
|
||||
(f (cdr e*) (cdr fmls)))]
|
||||
[else
|
||||
(map (lambda (x) (compile-expr x env #f #f)) e*)]))])
|
||||
(if (or #t ae)
|
||||
(let-values ([(src expr) (get-src/expr ae)])
|
||||
(lambda (env)
|
||||
(let ([e (e env)] [e* (map (lambda (e) (e env)) e*)])
|
||||
(let ([tr (last-trace)])
|
||||
(mark-reduction!
|
||||
(make-trace src expr env e e*
|
||||
(if tr (+ 1 (trace-depth tr)) 0))))
|
||||
(apply e e*))))
|
||||
(lambda (env)
|
||||
(let ([e (e env)] [e* (map (lambda (e) (e env)) e*)])
|
||||
(apply e e*)))))))
|
||||
(define (compile-nontail-call ae e e* env ctxt)
|
||||
(let ([proc (compile-tail-call ae e e* env ctxt)])
|
||||
(lambda (env)
|
||||
(dynamic-wind
|
||||
click-ring
|
||||
(lambda () (proc env))
|
||||
unclick-ring))))
|
||||
(define (compile-call ae e e* env ctxt tail?)
|
||||
(define (let-pattern? e e*)
|
||||
(let ([ls (get-fmls e e*)])
|
||||
(and (list? ls) (= (length ls) (length e*)))))
|
||||
(define (compile-let e e* env ctxt tail?)
|
||||
(let ([ls (get-fmls e e*)])
|
||||
(let ([e (compile-expr e env ctxt env)]
|
||||
[e* (map (lambda (x e)
|
||||
(compile-expr e env x env))
|
||||
ls e*)])
|
||||
(lambda (env)
|
||||
(apply (e env)
|
||||
(map (lambda (e) (e env)) e*))))))
|
||||
(if (let-pattern? e e*)
|
||||
(compile-let e e* env ctxt tail?)
|
||||
(if tail?
|
||||
(compile-tail-call ae e e* env ctxt)
|
||||
(compile-nontail-call ae e e* env ctxt))))
|
||||
(define (compile-expr expr env ctxt tail?)
|
||||
(cond
|
||||
[(symbol? expr) (compile-var expr env)]
|
||||
[(and (pair? expr) (list? expr))
|
||||
(let ([a (car expr)] [d (cdr expr)])
|
||||
(case a
|
||||
[(quote) (let ([v (car d)]) (lambda (env) v))]
|
||||
[(set!) (compile-set! (car d) (cadr d) env)]
|
||||
[(if)
|
||||
(compile-if (car d) (cadr d) (caddr d) env ctxt tail?)]
|
||||
[(begin)
|
||||
(compile-begin (car d) (cdr d) env ctxt tail?)]
|
||||
[(lambda)
|
||||
(compile-case-lambda #f (list d) env ctxt)]
|
||||
[(case-lambda)
|
||||
(compile-case-lambda #f d env ctxt)]
|
||||
[(annotated-case-lambda)
|
||||
(compile-case-lambda (car d) (cdr d) env ctxt)]
|
||||
[(letrec letrec*)
|
||||
(compile-letrec* (car d) (cadr d) env ctxt tail?)]
|
||||
[(library-letrec*)
|
||||
(compile-library-letrec* (car d) (cadr d) env ctxt tail?)]
|
||||
[(primitive)
|
||||
(let ([v (primitive-value (car d))])
|
||||
(lambda (env) v))]
|
||||
[(annotated-call)
|
||||
(compile-call (car d) (cadr d) (cddr d) env ctxt tail?)]
|
||||
[(foreign-call)
|
||||
(let ([name (car d)] [args (cdr d)])
|
||||
(let ([ls (map (lambda (x) (gensym)) args)])
|
||||
(let ([code
|
||||
(real-eval
|
||||
`(lambda ,ls (foreign-call ,name . ,ls)))])
|
||||
(compile-expr `(',code . ,args) env ctxt tail?))))]
|
||||
[else
|
||||
(compile-call #f a d env ctxt tail?)]))]
|
||||
[else
|
||||
(die who "invalid expression" expr)]))
|
||||
(lambda (expr)
|
||||
((compile-expr expr '() #f #t) '()))))
|
||||
|
||||
(define-struct trace (src expr env v v* depth))
|
||||
|
||||
(define (print-trace x)
|
||||
(printf " [~a] ~s\n" (trace-depth x) (trace-expr x))
|
||||
(let ([src (trace-src x)])
|
||||
(when (pair? src)
|
||||
(printf " source: char ~a of ~a\n" (cdr src) (car src))))
|
||||
(printf " operator: ~s\n" (trace-v x))
|
||||
(printf " operands: ~s\n" (trace-v* x)))
|
||||
|
||||
(define (print-step ls)
|
||||
(let ([ls (let f ([ls ls])
|
||||
(if (or (null? ls) (not (car ls)))
|
||||
'()
|
||||
(cons (car ls) (f (cdr ls)))))])
|
||||
(unless (null? ls)
|
||||
(printf "FRAME:\n")
|
||||
(for-each print-trace (reverse ls)))))
|
||||
|
||||
(define (print-all-traces)
|
||||
(for-each print-step (get-traces)))
|
||||
|
||||
|
||||
(parameterize ([current-core-eval
|
||||
(lambda (expr)
|
||||
;(display "=================\n")
|
||||
;(pretty-print expr)
|
||||
;(display "=================\n")
|
||||
(let ([proc (compile-expr expr '())])
|
||||
(proc '())))])
|
||||
(define (start-repl)
|
||||
(display "Ikarus Interpreter\n\n")
|
||||
(new-cafe))
|
||||
(new-cafe
|
||||
(lambda (x)
|
||||
(with-exception-handler
|
||||
(lambda (con)
|
||||
(print-all-traces)
|
||||
(raise-continuable con))
|
||||
(lambda ()
|
||||
(reset-ring)
|
||||
(eval x (interaction-environment)))))))
|
||||
|
||||
(define (start-script script-name args)
|
||||
(command-line-arguments (cons script-name args))
|
||||
(with-exception-handler
|
||||
(lambda (con)
|
||||
(print-all-traces)
|
||||
(raise-continuable con))
|
||||
(lambda ()
|
||||
(reset-ring)
|
||||
(load-r6rs-script script-name #f #t))))
|
||||
|
||||
(define original-eval (current-core-eval))
|
||||
|
||||
(define (real-eval x)
|
||||
(parameterize ([current-core-eval original-eval])
|
||||
(eval x (environment '(ikarus)))))
|
||||
|
||||
(current-core-eval core-interpret)
|
||||
(apply
|
||||
(case-lambda
|
||||
[(interpreter flag script-name . rest)
|
||||
(if (string=? flag "--r6rs-script")
|
||||
(start-script script-name rest)
|
||||
(error interpreter "invalid args" (cons* flag script-name rest)))]
|
||||
[(interpreter) (start-repl)]
|
||||
[(interpreter . rest)
|
||||
(error interpreter "invalid args" rest)])
|
||||
(command-line-arguments))
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
#!eof
|
||||
|
||||
(define-struct cell (prev next content))
|
||||
|
||||
(define (make-ring n f)
|
||||
(cond
|
||||
[(= n 1)
|
||||
(let ([cell (make-cell #f #f (f))])
|
||||
(set-cell-prev! cell cell)
|
||||
(set-cell-next! cell cell)
|
||||
cell)]
|
||||
[else
|
||||
(let ([ring (make-ring (- n 1) f)])
|
||||
(let ([prev (cell-prev ring)]
|
||||
[next (cell-next ring)])
|
||||
(let ([cell (make-cell ring next (f))])
|
||||
(set-cell-next! prev cell)
|
||||
(set-cell-prev! ring cell)
|
||||
cell)))]))
|
||||
|
||||
(define (make-double-ring n m)
|
||||
(make-ring n (lambda () (make-ring m (lambda () #f)))))
|
||||
|
||||
(print-graph #t)
|
||||
|
||||
;(write (make-double-rib 5 5))
|
||||
|
|
|
|||
|
|
@ -1 +1 @@
|
|||
1775
|
||||
1776
|
||||
|
|
|
|||
|
|
@ -3921,6 +3921,14 @@
|
|||
(define (syntax-annotation x)
|
||||
(if (stx? x) (stx-expr x) x))
|
||||
|
||||
; (define (syntax-annotation x)
|
||||
; (if (stx? x)
|
||||
; (let ([expr (stx-expr x)])
|
||||
; (if (annotation? x)
|
||||
; x
|
||||
; (stx->datum x)))
|
||||
; (stx->datum x)))
|
||||
|
||||
(define (assertion-error expr pos)
|
||||
(raise
|
||||
(condition
|
||||
|
|
|
|||
Loading…
Reference in New Issue