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|
# 07apr12abu
# (c) Software Lab. Alexander Burger
(de task (Key . Prg)
(nond
(Prg (del (assoc Key *Run) '*Run))
((num? Key) (quit "Bad Key" Key))
((assoc Key *Run)
(push '*Run
(conc
(make
(when (lt0 (link Key))
(link (+ (eval (pop 'Prg) 1))) ) )
(ifn (sym? (car Prg))
Prg
(cons
(cons 'job
(cons
(lit
(make
(while (atom (car Prg))
(link
(cons (pop 'Prg) (eval (pop 'Prg) 1)) ) ) ) )
Prg ) ) ) ) ) ) )
(NIL (quit "Key conflict" Key)) ) )
(de forked ()
(let N (caar *Run)
(when (gt0 N)
(push '*Fork (list 'close N)) )
(push '*Fork (list 'task N)) ) )
(de timeout (N)
(if2 N (assoc -1 *Run)
(set (cdr @) (+ N))
(push '*Run (list -1 (+ N) '(bye)))
(del @ '*Run) ) )
(de abort ("N" . "Prg")
(catch 'abort
(alarm "N" (throw 'abort))
(finally (alarm 0) (run "Prg")) ) )
(de macro "Prg"
(run (fill "Prg")) )
(de later ("@Var" . "@Prg")
(macro
(task (pipe (pr (prog . "@Prg")))
(setq "@Var" (in @ (rd)))
(task (close @)) ) )
"@Var" )
(de recur recurse
(run (cdr recurse)) )
(de curry "Z"
(let ("X" (pop '"Z") "Y" (pop '"Z") "P" (filter pat? "X"))
(if2 "P" (diff "X" "P")
(list "Y" (cons 'job (lit (env @)) (fill "Z" "P")))
(cons "Y" (fill "Z" "P"))
(list "Y" (cons 'job (lit (env @)) "Z"))
(cons "Y" "Z") ) ) )
(====)
### Definitions ###
(de expr ("F")
(set "F"
(list '@ (list 'pass (box (getd "F")))) ) )
(de subr ("F")
(set "F"
(getd (cadr (cadr (getd "F")))) ) )
(de undef ("X" "C")
(when (pair "X")
(setq "C" (cdr "X") "X" (car "X")) )
(ifn "C"
(prog1 (val "X") (set "X"))
(prog1
(cdr (asoq "X" (val "C")))
(set "C"
(delq (asoq "X" (val "C")) (val "C")) ) ) ) )
(de redef "Lst"
(let ("Old" (car "Lst") "New" (name "Old"))
(set
"New" (getd "Old")
"Old" "New"
"Old" (fill (cdr "Lst") "Old") )
"New" ) )
(de daemon ("X" . Prg)
(prog1
(nond
((pair "X")
(or (pair (getd "X")) (expr "X")) )
((pair (cdr "X"))
(method (car "X") (cdr "X")) )
(NIL
(method (car "X") (get (or (cddr "X") *Class) (cadr "X"))) ) )
(con @ (append Prg (cdr @))) ) )
(de patch ("Lst" "Pat" . "Prg")
(bind (fish pat? "Pat")
(recur ("Lst")
(loop
(cond
((match "Pat" (car "Lst"))
(set "Lst" (run "Prg")) )
((pair (car "Lst"))
(recurse @) ) )
(NIL (cdr "Lst"))
(T (atom (cdr "Lst"))
(when (match "Pat" (cdr "Lst"))
(con "Lst" (run "Prg")) ) )
(setq "Lst" (cdr "Lst")) ) ) ) )
(====)
(de cache ("Var" "Str" . Prg)
(nond
((setq "Var" (car (idx "Var" "Str" T)))
(set "Str" "Str" "Str" (run Prg 1)) )
((n== "Var" (val "Var"))
(set "Var" (run Prg 1)) )
(NIL (val "Var")) ) )
(====)
### I/O ###
(de tab (Lst . @)
(for N Lst
(let V (next)
(and (gt0 N) (space (- N (length V))))
(prin V)
(and (lt0 N) (args) (space (- 0 N (length V)))) ) )
(prinl) )
(de beep ()
(prin "^G") )
(de msg (X . @)
(out 2
(print X)
(pass prinl)
(flush) )
X )
(de script (File . @)
(load File) )
(de once Prg
(unless (idx '*Once (file) T)
(run Prg 1) ) )
(de pil @
(when (== "Pil" '"Pil")
(call 'mkdir "-p" (setq "Pil" `(pack (sys "HOME") "/.pil/"))) )
(pass pack "Pil") )
(de rc (File Key . @)
(ctl File
(let Lst (in File (read))
(ifn (args)
(cdr (assoc Key Lst))
(let Val (next)
(if (assoc Key Lst)
(con @ Val)
(push 'Lst (cons Key Val)) )
(protect
(out File (println Lst)) )
Val ) ) ) ) )
(de acquire (File)
(ctl File
(let P (in File (rd))
(or
(= P *Pid)
(unless (and P (kill P 0))
(out File (pr *Pid)) ) ) ) ) )
(de release (File)
(ctl File (out File)) )
# Temporary Files
(de tmp @
(unless *Tmp
(push '*Bye '(call 'rm "-r" *Tmp))
(push '*Fork '(off *Tmp) '(del '(call 'rm "-r" *Tmp) '*Bye))
(call 'mkdir "-p" (setq *Tmp (pil "tmp/" *Pid "/"))) )
(pass pack *Tmp) )
### List ###
(de insert (N Lst X)
(conc
(cut (dec N) 'Lst)
(cons X)
Lst ) )
(de remove (N Lst)
(conc
(cut (dec N) 'Lst)
(cdr Lst) ) )
(de place (N Lst X)
(conc
(cut (dec N) 'Lst)
(cons X)
(cdr Lst) ) )
(de uniq (Lst)
(let R NIL
(filter
'((X) (not (idx 'R X T)))
Lst ) ) )
(de group (Lst)
(make
(for X Lst
(if (assoc (car X) (made))
(conc @ (cons (cdr X)))
(link (list (car X) (cdr X))) ) ) ) )
### Symbol ###
(de qsym "Sym"
(cons (val "Sym") (getl "Sym")) )
(de loc (S X)
(if (and (str? X) (= S X))
X
(and
(pair X)
(or
(loc S (car X))
(loc S (cdr X)) ) ) ) )
(de local Lst
(mapc zap Lst) )
(de import Lst
(for Sym Lst
(unless (== Sym (intern Sym))
(quit "Import conflict" Sym) ) ) )
### OOP ###
(de class Lst
(let L (val (setq *Class (car Lst)))
(def *Class
(recur (L)
(if (atom (car L))
(cdr Lst)
(cons (car L) (recurse (cdr L))) ) ) ) ) )
(de object ("Sym" "Val" . @)
(putl "Sym")
(def "Sym" "Val")
(while (args)
(put "Sym" (next) (next)) )
"Sym" )
(de extend X
(setq *Class (car X)) )
# Class variables
(de var X
(if (pair (car X))
(put (cdar X) (caar X) (cdr X))
(put *Class (car X) (cdr X)) ) )
(de var: X
(apply meta X This) )
### Math ###
(de scl ("N" . "Prg")
(if "Prg"
(let *Scl "N" (run "Prg"))
(setq *Scl "N") ) )
(de sqrt (N F)
(cond
((lt0 N) (quit "Bad argument" N))
(N
(let (A 1 B 0)
(while (>= N A)
(setq A (>> -2 A)) )
(loop
(if (> (inc 'B A) N)
(dec 'B A)
(dec 'N B)
(inc 'B A) )
(setq B (>> 1 B) A (>> 2 A))
(T (=0 A)) )
(and F (> N B) (inc 'B))
B ) ) ) )
# (Knuth Vol.2, p.442)
(de ** (X N) # N th power of X
(let Y 1
(loop
(when (bit? 1 N)
(setq Y (* Y X)) )
(T (=0 (setq N (>> 1 N)))
Y )
(setq X (* X X)) ) ) )
(de accu (Var Key Val)
(when Val
(if (assoc Key (val Var))
(con @ (+ Val (cdr @)))
(push Var (cons Key Val)) ) ) )
### Pretty Printing ###
(de *PP
T NIL if ifn when unless while until do case state for
with catch finally co ! setq default push job use let let?
prog1 later recur redef =: in out ctl tab new )
(de *PP1 let let? for redef)
(de *PP2 setq default)
(de *PP3 if2)
(de pretty (X N . @)
(setq N (abs (space (or N 0))))
(while (args)
(printsp (next)) )
(if (or (atom X) (>= 12 (size X)))
(print X)
(while (== 'quote (car X))
(prin "'")
(pop 'X) )
(let Z X
(prin "(")
(cond
((memq (print (pop 'X)) *PP)
(cond
((memq (car Z) *PP1)
(if (and (pair (car X)) (pair (cdar X)))
(when (>= 12 (size (car X)))
(space)
(print (pop 'X)) )
(space)
(print (pop 'X))
(when (or (atom (car X)) (>= 12 (size (car X))))
(space)
(print (pop 'X)) ) ) )
((memq (car Z) *PP2)
(inc 'N 3)
(loop
(prinl)
(pretty (cadr X) N (car X))
(NIL (setq X (cddr X)) (space)) ) )
((or (atom (car X)) (>= 12 (size (car X))))
(space)
(print (pop 'X)) ) ) )
((and (memq (car Z) *PP3) (>= 12 (size (head 2 X))))
(space)
(print (pop 'X) (pop 'X)) ) )
(when X
(loop
(T (== Z X) (prin " ."))
(T (atom X) (prin " . ") (print X))
(prinl)
(pretty (pop 'X) (+ 3 N))
(NIL X) )
(space) )
(prin ")") ) ) )
(de pp ("X" C)
(let *Dbg NIL
(and (pair "X") (setq C (cdr "X")))
(prin "(")
(printsp (if C 'dm 'de))
(prog1 (printsp "X")
(setq "X"
(if C
(method (if (pair "X") (car "X") "X") C)
(val "X") ) )
(cond
((atom "X") (prin ". ") (print "X"))
((atom (cdr "X"))
(ifn (cdr "X")
(print (car "X"))
(print (car "X"))
(prin " . ")
(print @) ) )
(T
(let Z "X"
(print (pop '"X"))
(loop
(T (== Z "X") (prin " ."))
(NIL "X")
(T (atom "X")
(prin " . ")
(print "X") )
(prinl)
(pretty (pop '"X") 3) )
(space) ) ) )
(prinl ")") ) ) )
(de show ("X" . @)
(let *Dbg NIL
(setq "X" (pass get "X"))
(when (sym? "X")
(print "X" (val "X"))
(prinl)
(maps
'((X)
(space 3)
(if (atom X)
(println X)
(println (cdr X) (car X)) ) )
"X" ) )
"X" ) )
(de view (X Y)
(let *Dbg NIL
(if (=T Y)
(let N 0
(recur (N X)
(when X
(recurse (+ 3 N) (cddr X))
(space N)
(println (car X))
(recurse (+ 3 N) (cadr X)) ) ) )
(let Z X
(loop
(T (atom X) (println X))
(if (atom (car X))
(println '+-- (pop 'X))
(print '+---)
(view
(pop 'X)
(append Y (cons (if X "| " " "))) ) )
(NIL X)
(mapc prin Y)
(T (== Z X) (println '*))
(println '|)
(mapc prin Y) ) ) ) ) )
### Check ###
# Assertions
(de assert Prg
(when *Dbg
(cons
(list 'unless
(if (cdr Prg) (cons 'and Prg) (car Prg))
(list 'quit "'assert' failed" (lit (car Prg))) ) ) ) )
# Unit tests
(de test (Pat . Prg)
(bind (fish pat? Pat)
(unless (match Pat (run Prg 1))
(msg Prg)
(quit "'test' failed" Pat) ) ) )
### Debug ###
`*Dbg
(load "@lib/debug.l" "@lib/led.l" "@lib/edit.l" "@lib/lint.l")
(noLint 'later (loc "@Prg" later))
# vi:et:ts=3:sw=3
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