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|
;==============================================================================
; file: "_nonstd.scm"
; Copyright (C) 1994-1998 by Marc Feeley, All Rights Reserved.
(##include "header.scm")
;------------------------------------------------------------------------------
; Non-standard procedures
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(##define-macro (define-runtime-macro pattern . rest)
(define (form-size parms) ; this definition must match the one in "_eval.scm"
(let loop ((l parms) (n 1))
(if (pair? l)
(loop (cdr l) (+ n 1))
(if (null? l) n (- 0 n)))))
`(##top-cte-add-macro!
##interaction-cte
',(car pattern)
(##cons ',(form-size (cdr pattern))
(lambda ,(cdr pattern) ,@rest))))
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(define (exit #!optional (status (absent-obj)))
(if (##eq? status (absent-obj))
(##exit)
(force-vars (status)
(##exit status))))
(define (error msg . args)
(##call-with-current-continuation
(lambda (cont) (##sequentially (lambda ()
(##identify-error
"ERROR"
#f
(##frame-locat (##continuation->first-frame cont))
msg
args
'())
(##debug-repl cont #t))))))
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(define-runtime-macro (include filename)
`(##include ,filename))
(define-runtime-macro (define-macro pattern body . rest)
`(##define-macro ,pattern ,body ,@rest))
(define-runtime-macro (declare . rest)
`(##declare ,@rest))
(define-runtime-macro (namespace . rest)
`(##namespace ,@rest))
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(define-runtime-macro (dynamic-define var val)
`(##dynamic-define ',var ,val))
(define-runtime-macro (dynamic-ref var)
`(##dynamic-ref ',var))
(define-runtime-macro (dynamic-set! var val)
`(##dynamic-set! ',var ,val))
(define-runtime-macro (dynamic-let bindings body . rest)
(##dynamic-let-build
(##cons 'dynamic-let (##cons bindings (##cons body rest)))))
(define (##dynamic-let-build src)
(define (build src bindings)
(if (##pair? bindings)
(let ((binding (##car bindings)))
(##shape src (##sourcify binding src) 2)
(let ((x (##car binding)))
(if (##not (##symbol? x))
(##signal '##signal.syntax-error src "Identifier expected"))
(let ((rest (build src (##cdr bindings))))
(##cons (##list '##cons (##list 'quote x) (##cadr binding))
rest))))
(if (##null? bindings)
'()
(##signal '##signal.syntax-error src "Ill-terminated bindings"))))
(##list '##dynamic-let
(##cons '##list
(build (##sourcify src (##make-source #f #f))
(##cadr src)))
(##cons 'lambda (##cons '() (##cddr src)))))
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(define-runtime-macro (define-structure name . field-defs)
(define (err)
(##signal '##signal.syntax-error
(##sourcify
(##cons 'define-structure (##cons name field-defs))
(##make-source #f #f))
"Ill-formed special form:"
'define-structure))
(define (sym . strings)
(##string->symbol (##apply ##string-append strings)))
(if (##symbol? name)
(let ((name-str (##symbol->string name)))
(define (generate-accessors fields i tag)
(if (##null? fields)
'()
(let* ((field (##car fields))
(field-str (##symbol->string field))
(field-ref (sym name-str "-" field-str))
(field-set! (sym name-str "-" field-str "-set!")))
(##cons `(define ,field-set!
(lambda (x y)
(##declare (extended-bindings))
(##structure-set! x ,i y ',tag)))
(##cons `(define ,field-ref
(lambda (x)
(##declare (extended-bindings))
(##structure-ref x ,i ',tag)))
(generate-accessors (##cdr fields)
(##fixnum.+ i 1)
tag))))))
(define (generate-definitions rev-all-fields rev-printed-fields)
(let* ((all-fields (##reverse rev-all-fields))
(printed-fields (##reverse rev-printed-fields))
(tag (##list->vector
(##cons name
(##cons (##length printed-fields)
all-fields)))))
`(begin
,@(generate-accessors all-fields 1 tag)
(define ,(sym name-str "?")
(lambda (x)
(##declare (extended-bindings))
(and (##structure? x)
(##eq? (##vector-ref x 0) ',tag))))
(define ,(sym "make-" name-str)
(lambda (,@all-fields)
(##declare (extended-bindings))
(##subtype-set! (##vector ',tag ,@all-fields)
,(subtype-structure)))))))
(let loop1 ((l1 field-defs) (l2 '()))
(if (##pair? l1)
(let ((rest (##cdr l1)) (field (##car l1)))
(cond ((##symbol? field)
(loop1 rest (##cons field l2)))
((and (or (##null? field) (##pair? field))
(##not (##pair? rest)))
(let ((printed-fields l2))
(let loop2 ((l1 field) (l2 l2))
(if (##pair? l1)
(let ((rest (##cdr l1)) (field (##car l1)))
(cond ((##symbol? field)
(loop2 rest (##cons field l2)))
(else
(err))))
(generate-definitions l2 printed-fields)))))
(else
(err))))
(generate-definitions l2 l2))))
(err)))
(define (##structure-ref obj i tag)
(if (and (##structure? obj)
(##eq? (##vector-ref obj 0) tag))
(##vector-ref obj i)
(##structure-error tag i #f (##list obj))))
(define (##structure-set! obj i v tag)
(if (and (##structure? obj)
(##eq? (##vector-ref obj 0) tag))
(begin (##vector-set! obj i v) (##void))
(##structure-error tag i #t (##list obj v))))
(define (##structure-error tag i set!? args)
(let ((name-str (##symbol->string (##vector-ref tag 0)))
(field-str (##symbol->string (##vector-ref tag (##fixnum.+ i 1)))))
(##runtime-error (##string-append "Structure of type `"
name-str
"' expected")
(##string->symbol
(if set!?
(##string-append name-str "-" field-str "-set!")
(##string-append name-str "-" field-str)))
args)))
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(define (set-gc-report! report?)
(set! ##gc-report report?)
(##void))
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(define (void)
(##void))
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(define (runtime)
(let* ((v (##cpu-time))
(user (##vector-ref v 0))
(sys (##vector-ref v 1)))
(##* (##+ user sys) 1e-9)))
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(define (cpu-time)
(##cpu-time))
(define (real-time)
(##real-time))
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(define-runtime-macro (time expr)
`(##time (lambda () ,expr) ',expr))
(define (##time thunk expr)
(let ((at-start (##process-statistics)))
(let ((result (thunk)))
(let ((at-end (##process-statistics)))
(let* ((out
(##repl-out))
(rt
(##repl-readtable))
(real-nsecs
(##- (##vector-ref at-end 0) (##vector-ref at-start 0)))
(user-nsecs
(##- (##vector-ref at-end 1) (##vector-ref at-start 1)))
(sys-nsecs
(##- (##vector-ref at-end 2) (##vector-ref at-start 2)))
(gc-user-nsecs
(##- (##vector-ref at-end 3) (##vector-ref at-start 3)))
(gc-sys-nsecs
(##- (##vector-ref at-end 4) (##vector-ref at-start 4)))
(nb-gcs
(##- (##vector-ref at-end 5) (##vector-ref at-start 5)))
(minflt
(##- (##vector-ref at-end 9) (##vector-ref at-start 9)))
(majflt
(##- (##vector-ref at-end 10) (##vector-ref at-start 10)))
(bytes-allocated
(##- (##- (##vector-ref at-end 6) (##vector-ref at-start 6))
(##+ (if (##interp-procedure? thunk)
(##vector-ref at-end 7) ; thunk call frame space
0)
(##vector-ref at-end 8))))) ; at-end structure space
(define (pluralize n msg)
(##write-string " " out)
(if (##= n 0)
(##write-string "no" out)
(##write n out rt #f))
(##write-string msg out)
(if (##not (##= n 1))
(##write-string "s" out)))
(##write (##list 'time expr) out rt #f)
(##newline out)
(##write-string " " out)
(##write (##round (##/ real-nsecs 1000000)) out rt #f)
(##write-string " ms real time" out)
(##newline out)
(##write-string " " out)
(##write (##round (##/ (##+ user-nsecs sys-nsecs) 1000000)) out rt #f)
(##write-string " ms cpu time (" out)
(##write (##round (##/ user-nsecs 1000000)) out rt #f)
(##write-string " user, " out)
(##write (##round (##/ sys-nsecs 1000000)) out rt #f)
(##write-string " system)" out)
(##newline out)
(pluralize nb-gcs " collection")
(if (##not (##= nb-gcs 0))
(begin
(##write-string " accounting for " out)
(##write (##round (##/ (##+ gc-user-nsecs gc-sys-nsecs) 1000000)) out rt #f)
(##write-string " ms cpu time (" out)
(##write (##round (##/ gc-user-nsecs 1000000)) out rt #f)
(##write-string " user, " out)
(##write (##round (##/ gc-sys-nsecs 1000000)) out rt #f)
(##write-string " system)" out)))
(##newline out)
(pluralize bytes-allocated " byte")
(##write-string " allocated" out)
(##newline out)
(pluralize minflt " minor fault")
(##newline out)
(pluralize majflt " major fault")
(##newline out)
result)))))
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(define ##gensym-count -1)
(define (gensym #!optional (p (absent-obj)))
(force-vars (p)
(let ((prefix (if (##eq? p (absent-obj)) 'g p)))
(check-symbol prefix (gensym p)
(##make-uninterned-symbol
(##string-append (##symbol->string prefix)
(begin
(set! ##gensym-count (##+ ##gensym-count 1))
(##number->string ##gensym-count 10))))))))
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(define (will? x)
(force-vars (x)
(##will? x)))
(define (make-will testator #!optional (action (absent-obj)))
(if (##eq? action (absent-obj))
(##make-will testator)
(force-vars (action)
(check-procedure action (make-will testator action)
(##make-will testator action)))))
(define (will-testator x)
(force-vars (x)
(check-will x (will-testator x)
(##will-testator x))))
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(define (argv)
##processed-argv)
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(define (getenv name)
(force-vars (name)
(check-string name (getenv name)
(##getenv name))))
;------------------------------------------------------------------------------
|
