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lib.l
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# 22jun20abu
# (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 (++ Prg) 1))) ) )
(ifn (sym? (car Prg))
Prg
(cons
(cons 'job
(cons
(lit
(make
(while (atom (car Prg))
(link
(cons (++ Prg) (eval (++ 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 tasks Prg
(task -2 (abs (run Prg)) "Prg" Prg
(let (L (assoc @ *Run) P (run "Prg"))
(if2 (lt0 (car L)) (lt0 P)
(set (cdr L) (abs P)) # (-2 111 ..) -> (-2 999 ..)
(prog # (-2 999 ..) -> (7 ..)
(del '(task -2) '*Fork)
(ifn P
(task -2)
(set L P)
(con L (cddr L))
(push '*Fork (list 'close P) (list 'task P)) ) )
(let N (car L) # (7 ..) -> (-2 999 ...)
(del (list 'task N) '*Fork)
(del (list 'close N) '*Fork)
(set L -2)
(con L (cons (abs P) (cdr L)))
(push '*Fork '(task -2)) )
(let N (car L) # (3 ..) -> (7 ..)
(del (list 'task N) '*Fork)
(del (list 'close N) '*Fork)
(ifn P
(task N)
(set L P)
(push '*Fork (list 'close P) (list 'task P)) ) ) ) ) )
(forked) )
(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" (++ "Z") "Y" (++ "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 (cadadr (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" X . Prg)
(let K (cons (char (hash X)) X)
(nond
(Prg (caar (idx "Var" K)))
((setq "Var" (caar (idx "Var" K T)))
(set (car K) (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) )
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
(in File
(let Lst (read)
(ifn (args)
(cdr (assoc Key Lst))
(let Val (next)
(loop
(if (assoc Key Lst)
(con @ Val)
(push 'Lst (cons Key Val)) )
(NIL (args))
(setq Key (next) Val (next)) )
(protect
(out File (println Lst)) )
Val ) ) ) ) ) )
(de acquire (File)
(ctl File
(in File
(let P (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 uniq (Lst)
(let R NIL
(filter
'((X)
(not (idx 'R (cons (hash X) X) T)) )
Lst ) ) )
### 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)) ) ) ) )
(unless (== 64 64) (from "####"))
(de private ()
(let (S (intern (name "priv") T) L (symbols S))
(read)
(symbols (cons (car L) S (cdr L))) ) )
(de local ()
(symbols (list (car (symbols)))
(read) ) )
(de export (Sym)
(symbols
(list
(or
Sym
(let L (symbols)
((if (= "priv" (cadr L)) caddr cadr) L) ) ) )
(read) ) )
(de import Lst
(for Sym Lst
(unless (== Sym (intern Sym T))
(quit "Import conflict" Sym) ) )
Lst )
####
### 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") ) )
# (Knuth Vol.2, p.442)
(de ** (X N) # N th power of X
(if (ge0 N)
(let Y 1
(loop
(when (bit? 1 N)
(setq Y (* Y X)) )
(T (=0 (setq N (>> 1 N)))
Y )
(setq X (* X X)) ) )
0 ) )
# Accumulate
(de accu ("Var" Key Val)
(when Val
(if (assoc Key (val "Var"))
(con @ (+ Val (cdr @)))
(push "Var" (cons Key Val)) ) ) )
# Flooding Algorithm
(de flood ("Lst" "Fun" "Init")
(let G (mapcar '(("X") (cons "X" ("Fun" "X"))) "Lst")
(for L G
(for X (cdr L)
(let A (asoq X G)
(unless (memq (car L) (cdr A))
(con A (cons (car L) (cdr A))) ) ) ) )
(make
(recur ("Init")
(for X "Init"
(unless (memq X (made))
(link X)
(recurse (cdr (asoq X G))) ) ) ) ) ) )
### Pretty Printing ###
(de pretty (X N)
(setq N (abs (space (or N 0))))
(while (and (pair X) (== 'quote (car X)))
(prin "'")
(++ X) )
(cond
((atom X) (print X))
((memq (car X) '(de dm redef))
(_pretty
(spPrt (++ X))
(spPrt (++ X))
(prtty1 X N Z) ) )
((memq (car X) '(let let?))
(_pretty
(cond
((atom (car X))
(spPrt (++ X))
(prtty? (++ X) N) )
((>= 12 (size (car X)))
(prin " (")
(let Z (++ X)
(prtty2 Z NIL Z) )
(prin ")") )
(T
(nlPrt N)
(prin "(")
(let Z (++ X)
(prtty2 Z (+ N 3) Z) )
(prin " )") ) )
(prtty1 X N Z) ) )
((== 'for (car X))
(_pretty
(cond
((or (atom (car X)) (atom (cdar X)))
(spPrt (++ X))
(prtty? (++ X) N) )
((>= 12 (size (car X)))
(spPrt (++ X)) )
(T
(nlPrt N)
(prtty0 (++ X) (+ 3 N)) ) )
(prtty1 X N Z) ) )
((== 'if2 (car X))
(_pretty
(when (>= 12 (size (head 2 X)))
(spPrt (++ X))
(spPrt (++ X)) )
(prtty1 X N Z) ) )
((memq (car X) '(while until do state finally co))
(prtty3 X N) )
((>= 12 (size X))
(ifn (memq (car X) '(set setq default))
(print X)
(prin "(")
(let Z X
(printsp (++ X))
(prtty2 X NIL Z) )
(prin ")") ) )
((memq (car X) '(=: use later recur tab new))
(_pretty
(space)
(print (++ X))
(prtty1 X N Z) ) )
((memq (car X) '(setq default))
(_pretty
(if (cdddr X)
(prog
(nlPrt N)
(prtty2 X N Z) )
(spPrt (++ X))
(nlPrt1 (++ X) N) ) ) )
((memq (car X) '(T NIL ! if ifn when unless case casq with catch throw push bind job in out err ctl))
(prtty3 X N) )
(T (prtty0 X N)) ) )
(de _pretty "Prg"
(prin "(")
(let Z X
(print (++ X))
(run "Prg") )
(prin " )") )
(de prtty0 (X N)
(prin "(")
(let Z X
(pretty (++ X) (- -3 N))
(prtty1 X N Z) )
(prin " )") )
(de prtty1 (X N Z)
(loop
(NIL X)
(T (== Z X) (prin " ."))
(T (atom X) (prin " . ") (print X))
(nlPrt1 (++ X) N) ) )
(de prtty2 (X N Z)
(loop
(print (++ X))
(NIL X)
(T (== Z X) (prin " ."))
(T (atom X) (prin " . ") (print X))
(if N
(prtty? (++ X) N)
(space)
(print (++ X)) )
(NIL X)
(T (== Z X) (prin " ."))
(T (atom X) (prin " . ") (print X))
(if N
(nlPrt N)
(space 2) ) ) )
(de prtty3 (X N)
(prin "(")
(let Z X
(print (++ X))
(when (or (atom (car X)) (>= 12 (size (car X))))
(spPrt (++ X)) )
(when X
(prtty1 X N Z)
(space) ) )
(prin ")") )
(de prtty? (X N)
(ifn (or (atom X) (>= 12 (size X)))
(nlPrt1 X N)
(spPrt X) ) )
(de spPrt (X)
(space)
(print X) )
(de nlPrt (N)
(prinl)
(space (+ 3 N)) )
(de nlPrt1 (X N)
(prinl)
(pretty X (+ 3 N)) )
(de pp ("X" C)
(let *Dbg NIL
(pretty
(if (or C (pair "X"))
(cons 'dm "X"
(if (pair "X")
(method (car "X") (cdr "X"))
(method "X" C) ) )
(cons 'de "X" (val "X")) ) )
(prinl)
"X" ) )
(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 '+-- (++ X))
(print '+---)
(view
(++ 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
(let A (if (cdr Prg) (cons 'and Prg) (car Prg))
(cons
(list 'unless A
(list 'quit "'assert' failed" (lit A)) ) ) ) ) )
# Unit tests
(de test (Pat . Prg)
(bind (fish pat? Pat)
(unless (match Pat (run Prg 1))
(msg Prg)
(quit "'test' failed" Pat) ) ) )
### 32bit/64bit support ###
(setq *BigNum (* 256 1024 1024))
(setq 64bit? `(== *BigNum (format (format *BigNum))))
(setq *Word (if 64bit? 8 4))
(de shlib (nm)
(pack nm (case *OS ("Darwin" ".dylib") (T ".so"))) )
### Debug ###
`*Dbg
(if (info (pil "editor"))
(load (pil "editor"))
(load "@lib/led.l" "@lib/edit.l") )
(load "@lib/debug.l" "@lib/lint.l")
(noLint 'pretty 'Z)
(noLint '_pretty 'Z)
# vi:et:ts=3:sw=3