ref: 20488fc4915662e0ec50bb8c4ebc2609d6e110b4
dir: /test/test.lsp/
; -*- scheme -*-
; make label self-evaluating, but evaluating the lambda in the process
;(defmacro labl (name f)
; (list list ''labl (list 'quote name) f))
(define-macro (labl name f)
`(let (,name) (set! ,name ,f)))
;(define (reverse lst)
; ((label rev-help (λ (lst result)
; (if (null? lst) result
; (rev-help (cdr lst) (cons (car lst) result)))))
; lst ()))
(define (append- . lsts)
((label append-h
(λ (lsts)
(cond ((null? lsts) ())
((null? (cdr lsts)) (car lsts))
(#t ((label append2 (λ (l d)
(if (null? l) d
(cons (car l)
(append2 (cdr l) d)))))
(car lsts) (append-h (cdr lsts)))))))
lsts))
;(princ 'Hello '| | 'world! "\n")
;(filter (λ (x) (not (< x 0))) '(1 -1 -2 5 10 -8 0))
(define (fib n) (if (< n 2) n (+ (fib (- n 1)) (fib (- n 2)))))
;(princ (time (fib 34)) "\n")
;(dotimes (i 20000) (map-int (λ (x) (list 'quote x)) 8))
;(dotimes (i 40000) (append '(a b) '(1 2 3 4) () '(c) () '(5 6)))
;(dotimes (i 80000) (list 1 2 3 4 5))
;(set! a (map-int identity 10000))
;(dotimes (i 200) (rfoldl cons () a))
#|
(define-macro (dotimes var . body)
(let ((v (car var))
(cnt (cadr var)))
`(let ((,v 0))
(while (< ,v ,cnt)
(prog1
,(cons 'begin body)
(set! ,v (+ ,v 1)))))))
(define (map-int f n)
(if (<= n 0)
()
(let ((first (cons (f 0) ())))
((label map-int-
(λ (acc i n)
(if (= i n)
first
(begin (set-cdr! acc (cons (f i) ()))
(map-int- (cdr acc) (+ i 1) n)))))
first 1 n))))
|#
(define-macro (labl name fn)
`((λ (,name) (set! ,name ,fn)) ()))
(define (square x) (* x x))
(define (expt b p)
(cond ((= p 0) 1)
((= b 0) 0)
((even? p) (square (expt b (div0 p 2))))
(#t (* b (expt b (- p 1))))))
(define (gcd a b)
(cond ((= a 0) b)
((= b 0) a)
((< a b) (gcd a (- b a)))
(#t (gcd b (- a b)))))
; like eval-when-compile
(define-macro (literal expr)
(let ((v (eval expr)))
(if (self-evaluating? v) v (list quote v))))
(define (cardepth l)
(if (atom? l) 0
(+ 1 (cardepth (car l)))))
(define (nestlist f zero n)
(if (<= n 0) ()
(cons zero (nestlist f (f zero) (- n 1)))))
(define (mapl f . lsts)
((label mapl-
(λ (lsts)
(if (null? (car lsts)) ()
(begin (apply f lsts) (mapl- (map cdr lsts))))))
lsts))
; test to see if a symbol begins with :
(define (keywordp s)
(and (>= s '|:|) (<= s '|:~|)))
; swap the cars and cdrs of every cons in a structure
(define (swapad c)
(if (atom? c) c
(set-cdr! c (K (swapad (car c))
(set-car! c (swapad (cdr c)))))))
(define (without x l)
(filter (λ (e) (not (eq e x))) l))
(define (conscount c)
(if (pair? c) (+ 1
(conscount (car c))
(conscount (cdr c)))
0))
; _ Welcome to
; (_ _ _ |_ _ | . _ _ 2
; | (-||||_(_)|__|_)|_)
; ==================|==
;[` _ ,_ |- | . _ 2
;| (/_||||_()|_|_\|)
; |
(define-macro (while- test . forms)
`((label -loop- (λ ()
(if ,test
(begin ,@forms
(-loop-))
())))))
; this would be a cool use of thunking to handle 'finally' clauses, but
; this code doesn't work in the case where the user manually re-raises
; inside a catch block. one way to handle it would be to replace all
; their uses of 'raise' with '*_try_finally_raise_*' which calls the thunk.
; (try expr
; (catch (TypeError e) . exprs)
; (catch (IOError e) . exprs)
; (finally . exprs))
(define-macro (try expr . forms)
(let ((final (f-body (cdr (or (assq 'finally forms) '(())))))
(body (foldr
; create a function to check for and handle one exception
; type, and pass off control to the next when no match
(λ (catc next)
(let ((var (cadr (cadr catc)))
(extype (caadr catc))
(todo (f-body (cddr catc))))
`(λ (,var)
(if (or (eq ,var ',extype)
(and (pair? ,var)
(eq (car ,var) ',extype)))
,todo
(,next ,var)))))
; default function; no matches so re-raise
'(λ (e) (begin (*_try_finally_thunk_*) (raise e)))
; make list of catch forms
(filter (λ (f) (eq (car f) 'catch)) forms))))
`(let ((*_try_finally_thunk_* (λ () ,final)))
(prog1 (attempt ,expr ,body)
(*_try_finally_thunk_*)))))
(define Y
(λ (f)
((λ (h)
(f (λ (x) ((h h) x))))
(λ (h)
(f (λ (x) ((h h) x)))))))
(define yfib
(Y (λ (fib)
(λ (n)
(if (< n 2) n (+ (fib (- n 1)) (fib (- n 2))))))))
;(defun tt () (time (dotimes (i 500000) (* 0x1fffffff 1) )))
;(tt)
;(tt)
;(tt)
(define-macro (accumulate-while cnd what . body)
(let ((acc (gensym)))
`(let ((,acc (list ())))
(cdr
(prog1 ,acc
(while ,cnd
(begin (set! ,acc
(cdr (set-cdr! ,acc (cons ,what ()))))
,@body)))))))
(define-macro (accumulate-for var lo hi what . body)
(let ((acc (gensym)))
`(let ((,acc (list ())))
(cdr
(prog1 ,acc
(for ,lo ,hi
(λ (,var)
(begin (set! ,acc
(cdr (set-cdr! ,acc (cons ,what ()))))
,@body))))))))
(define (map-indexed f lst)
(if (atom? lst) lst
(let ((i 0))
(accumulate-while (pair? lst) (f (car lst) i)
(begin (set! lst (cdr lst))
(set! i (1+ i)))))))
(let ((*profiles* (table)))
(set! profile
(λ (s)
(let ((f (top-level-value s)))
(put! *profiles* s (cons 0 0))
(set-top-level-value! s
(λ args
(define tt (get *profiles* s))
(define count (car tt))
(define time (cdr tt))
(define t0 (time-now))
(define v (apply f args))
(set-cdr! tt (+ time (- (time-now) t0)))
(set-car! tt (+ count 1))
v)))))
(set! show-profiles
(λ ()
(define pr (filter (λ (x) (> (cadr x) 0))
(table-pairs *profiles*)))
(define width (+ 4
(apply max
(map (λ (x)
(length (string x)))
(cons 'Function
(map car pr))))))
(princ (string-rpad "Function" width #\ )
"#Calls Time (seconds)")
(newline)
(princ (string-rpad "--------" width #\ )
"------ --------------")
(newline)
(for-each
(λ (p)
(princ (string-rpad (string (caddr p)) width #\ )
(string-rpad (string (cadr p)) 11 #\ )
(car p))
(newline))
(simple-sort (map (λ (l) (reverse (to-proper l)))
pr)))))
(set! clear-profiles
(λ ()
(for-each (λ (k)
(put! *profiles* k (cons 0 0)))
(table-keys *profiles*)))))
#;(for-each profile
'(emit encode-byte-code const-to-idx-vec
index-of lookup-sym in-env? any every
compile-sym compile-if compile-begin
compile-arglist expand builtin->instruction
compile-app separate nconc get-defined-vars
compile-in compile compile-f delete-duplicates
map length> length= count filter append
lastcdr to-proper reverse reverse! list->vector
taboreach list-head list-tail assq memq assoc member
assv memv nreconc bq-process))
(define (filt1 pred lst)
(define (filt1- pred lst accum)
(if (null? lst) accum
(if (pred (car lst))
(filt1- pred (cdr lst) (cons (car lst) accum))
(filt1- pred (cdr lst) accum))))
(filt1- pred lst ()))
(define (filto pred lst (accum ()))
(if (atom? lst) accum
(if (pred (car lst))
(filto pred (cdr lst) (cons (car lst) accum))
(filto pred (cdr lst) accum))))
; (pairwise? p a b c d) == (and (p a b) (p b c) (p c d))
(define (pairwise? pred . args)
(or (null? args)
(let f ((a (car args)) (d (cdr args)))
(or (null? d)
(and (pred a (car d)) (f (car d) (cdr d)))))))