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_gambit#.scm
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_gambit#.scm
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;;;============================================================================
;;; File: "_gambit#.scm", Time-stamp: <2009-06-11 09:44:24 feeley>
;;; Copyright (c) 1994-2009 by Marc Feeley, All Rights Reserved.
;;;============================================================================
;; General object representation.
;; IMPORTANT: These definitions need to be consistent with the
;; definitions in the files "lib/gambit.h.in" (macros ___t... and
;; ___s...) and "gsc/_t-c-3.scm" (procedure targ-obj-subtype-integer).
;; Type tags.
(##define-macro (macro-type-fixnum) 0)
(##define-macro (macro-type-subtyped) 1)
(##define-macro (macro-type-special) 2)
(##define-macro (macro-type-pair) 3)
;; Subtype tags.
(##define-macro (macro-subtype-vector) 0)
(##define-macro (macro-subtype-pair) 1)
(##define-macro (macro-subtype-ratnum) 2)
(##define-macro (macro-subtype-cpxnum) 3)
(##define-macro (macro-subtype-structure) 4)
(##define-macro (macro-subtype-boxvalues) 5)
(##define-macro (macro-subtype-meroon) 6)
(##define-macro (macro-subtype-jazz) 7)
(##define-macro (macro-subtype-symbol) 8)
(##define-macro (macro-subtype-keyword) 9)
(##define-macro (macro-subtype-frame) 10)
(##define-macro (macro-subtype-continuation) 11)
(##define-macro (macro-subtype-promise) 12)
(##define-macro (macro-subtype-weak) 13)
(##define-macro (macro-subtype-procedure) 14)
(##define-macro (macro-subtype-return) 15)
(##define-macro (macro-subtype-foreign) 18)
(##define-macro (macro-subtype-string) 19)
(##define-macro (macro-subtype-s8vector) 20)
(##define-macro (macro-subtype-u8vector) 21)
(##define-macro (macro-subtype-s16vector) 22)
(##define-macro (macro-subtype-u16vector) 23)
(##define-macro (macro-subtype-s32vector) 24)
(##define-macro (macro-subtype-u32vector) 25)
(##define-macro (macro-subtype-f32vector) 26)
;; for alignment these 5 must be last:
(##define-macro (macro-subtype-s64vector) 27)
(##define-macro (macro-subtype-u64vector) 28)
(##define-macro (macro-subtype-f64vector) 29)
(##define-macro (macro-subtype-flonum) 30)
(##define-macro (macro-subtype-bignum) 31)
(##define-macro (macro-subtype-ovector? x) `(##fixnum.< ,x 8))
(##define-macro (macro-subtype-bvector? x) `(##fixnum.< 16 ,x))
;;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
;; Special objects.
(##define-macro (macro-absent-obj) `',(##type-cast -6 2))
(##define-macro (macro-unused-obj) `',(##type-cast -14 2))
(##define-macro (macro-deleted-obj) `',(##type-cast -15 2))
;;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
;; System procedure classes.
(##define-macro (define-prim form . exprs)
(define inlinable-procs '(
##type ##type-cast ##subtype ##subtype-set!
##not ##boolean? ##null? ##unbound? ##eq? ##eof-object?
##fixnum? ##flonum? ##special? ##pair? ##pair-mutable? ##subtyped? ##subtyped-mutable?
##subtyped.vector? ##subtyped.symbol? ##subtyped.flonum? ##subtyped.bignum?
##procedure? ##promise? ##vector? ##symbol? ##keyword? ##ratnum? ##cpxnum?
##string? ##structure? ##values? ##bignum?
##char? ;;; ##closure? ##subprocedure?
##number? ##complex?
;;; ##fixnum.max ##fixnum.min
;;; ##fixnum.wrap+ ##fixnum.+
##fixnum.+?
;;; ##fixnum.wrap* ##fixnum.*
##fixnum.*?
;;; ##fixnum.wrap- ##fixnum.- ##fixnum.-?
##fixnum.wrapquotient ##fixnum.quotient
##fixnum.remainder ##fixnum.modulo
;;; ##fixnum.bitwise-ior ##fixnum.bitwise-xor
;;; ##fixnum.bitwise-and ##fixnum.bitwise-not
##fixnum.wraparithmetic-shift ##fixnum.arithmetic-shift
##fixnum.arithmetic-shift?
##fixnum.wraparithmetic-shift-left ##fixnum.arithmetic-shift-left
##fixnum.arithmetic-shift-left?
##fixnum.arithmetic-shift-right
##fixnum.arithmetic-shift-right?
##fixnum.wraplogical-shift-right
##fixnum.wraplogical-shift-right?
##fixnum.wrapabs ##fixnum.abs ##fixnum.abs?
##fixnum.zero? ##fixnum.positive? ##fixnum.negative?
##fixnum.odd? ##fixnum.even?
;;; ##fixnum.= ##fixnum.< ##fixnum.> ##fixnum.<= ##fixnum.>=
##fixnum.->char ##fixnum.<-char
##flonum.->fixnum ##flonum.<-fixnum
;;; ##flonum.max ##flonum.min
;;; ##flonum.+ ##flonum.- ##flonum.* ##flonum./
##flonum.abs
##flonum.floor ##flonum.ceiling ##flonum.truncate ##flonum.round
##flonum.exp ##flonum.log
##flonum.sin ##flonum.cos ##flonum.tan
##flonum.asin ##flonum.acos
;;; ##flonum.atan
##flonum.expt ##flonum.sqrt
##flonum.copysign
##flonum.integer? ##flonum.zero? ##flonum.positive? ##flonum.negative?
##flonum.odd? ##flonum.even?
##flonum.finite? ##flonum.infinite? ##flonum.nan?
##flonum.<-fixnum-exact?
;;; ##flonum.= ##flonum.< ##flonum.> ##flonum.<= ##flonum.>=
##fx->char ##fx<-char
##fl->fx ##fl<-fx
##fl<-fx-exact?
;;; ##fxmax ##fxmin
;;; ##fxwrap+ ##fx+
##fx+?
;;; ##fxwrap* ##fx*
##fx*?
;;; ##fxwrap- ##fx- ##fx-?
##fxwrapquotient ##fxquotient
##fxremainder ##fxmodulo
;;; ##fxnot ##fxand
;;; ##fxior ##fxxor
##fxif ##fxbit-count ##fxlength ##fxfirst-bit-set ##fxbit-set?
##fxwraparithmetic-shift ##fxarithmetic-shift
##fxarithmetic-shift?
##fxwraparithmetic-shift-left ##fxarithmetic-shift-left
##fxarithmetic-shift-left?
##fxarithmetic-shift-right
##fxarithmetic-shift-right?
##fxwraplogical-shift-right
##fxwraplogical-shift-right?
##fxwrapabs ##fxabs ##fxabs?
##fxzero? ##fxpositive? ##fxnegative?
##fxodd? ##fxeven?
;;; ##fx= ##fx< ##fx> ##fx<= ##fx>=
##fixnum->char ##char->fixnum
##flonum->fixnum ##fixnum->flonum ##fixnum->flonum-exact?
;;; ##flmax ##flmin
;;; ##fl+ ##fl- ##fl* ##fl/
##flabs
##flfloor ##flceiling ##fltruncate ##flround
##flexp ##fllog
##flsin ##flcos ##fltan
##flasin ##flacos
;;; ##flatan
##flexpt ##flsqrt
##flcopysign
##flinteger? ##flzero? ##flpositive? ##flnegative?
##flodd? ##fleven?
##flfinite? ##flinfinite? ##flnan?
;;; ##fl= ##fl< ##fl> ##fl<= ##fl>=
##char=? ##char<? ##char>? ##char<=? ##char>=?
##char-alphabetic? ##char-numeric? ##char-whitespace?
##char-upper-case? ##char-lower-case? ##char-upcase ##char-downcase
##cons ##set-car! ##set-cdr! ##car ##cdr
##caar ##cadr ##cdar ##cddr
##caaar ##caadr ##cadar ##caddr ##cdaar ##cdadr ##cddar ##cdddr
##caaaar ##caaadr ##caadar ##caaddr ##cadaar ##cadadr ##caddar ##cadddr
##cdaaar ##cdaadr ##cdadar ##cdaddr ##cddaar ##cddadr ##cdddar ##cddddr
;;; ##list
##box? ##box ##unbox ##set-box!
;;; ##vector
##vector-length ##vector-ref ##vector-set! ##vector-shrink!
;;; ##string
##string-length ##string-ref ##string-set! ##string-shrink!
##s8vector? ;;; ##s8vector
##s8vector-length ##s8vector-ref ##s8vector-set! ##s8vector-shrink!
##u8vector? ;;; ##u8vector
##u8vector-length ##u8vector-ref ##u8vector-set! ##u8vector-shrink!
##s16vector? ;;; ##s16vector
##s16vector-length ##s16vector-ref ##s16vector-set! ##s16vector-shrink!
##u16vector? ;;; ##u16vector
##u16vector-length ##u16vector-ref ##u16vector-set! ##u16vector-shrink!
##s32vector? ;;; ##s32vector
##s32vector-length ##s32vector-ref ##s32vector-set! ##s32vector-shrink!
##u32vector? ;;; ##u32vector
##u32vector-length ##u32vector-ref ##u32vector-set! ##u32vector-shrink!
##s64vector? ;;; ##s64vector
##s64vector-length ##s64vector-ref ##s64vector-set! ##s64vector-shrink!
##u64vector? ;;; ##u64vector
##u64vector-length ##u64vector-ref ##u64vector-set! ##u64vector-shrink!
##f32vector? ;;; ##f32vector
##f32vector-length ##f32vector-ref ##f32vector-set! ##f32vector-shrink!
##f64vector? ;;; ##f64vector
##f64vector-length ##f64vector-ref ##f64vector-set! ##f64vector-shrink!
;;; ##symbol->string ##keyword->string
##closure-length ##closure-code ##closure-ref ##closure-set!
;;; ##subprocedure-id ##subprocedure-parent
;;; ##subprocedure-parent-info ##subprocedure-parent-name
##make-promise ##force ##void
##unchecked-structure-ref ##unchecked-structure-set!
##will? ##make-will ##will-testator
##mem-allocated? ##gc-hash-table?
##gc-hash-table-ref ##gc-hash-table-set! ##gc-hash-table-rehash!
##global-var-ref ##global-var-primitive-ref
##global-var-set! ##global-var-primitive-set!
##bignum.negative?
##bignum.adigit-length
##bignum.adigit-inc!
##bignum.adigit-dec!
##bignum.adigit-add!
##bignum.adigit-sub!
##bignum.mdigit-length
##bignum.mdigit-ref
##bignum.mdigit-set!
##bignum.mdigit-mul!
##bignum.mdigit-div!
##bignum.mdigit-quotient
##bignum.mdigit-remainder
##bignum.mdigit-test?
##bignum.adigit-ones?
##bignum.adigit-zero?
##bignum.adigit-negative?
##bignum.adigit-=
##bignum.adigit-<
##bignum.->fixnum
##bignum.<-fixnum
##bignum.adigit-shrink!
##bignum.adigit-copy!
##bignum.adigit-cat!
##bignum.adigit-bitwise-and!
##bignum.adigit-bitwise-ior!
##bignum.adigit-bitwise-xor!
##bignum.adigit-bitwise-not!
##bignum.fdigit-length
##bignum.fdigit-ref
##bignum.fdigit-set!
))
(let ((name
(if (symbol? form)
form
(car form))))
(let ((val
(if (symbol? form)
(if (and (pair? exprs) (null? (cdr exprs)))
(car exprs)
(error "Incorrect define-prim"))
(if (memq name inlinable-procs)
`(lambda ,(cdr form)
,form)
(if (null? exprs)
(error "define-prim can't inline" name)
`(lambda ,(cdr form)
,@exprs))))))
`(define ,name
(let ()
(##declare
(not inline)
(standard-bindings)
(extended-bindings))
,val)))))
;;;----------------------------------------------------------------------------
;; Macro to define structure accessors.
(##define-macro (macro-slot index struct . val)
(if (null? val)
`(##vector-ref ,struct ,index)
`(##vector-set! ,struct ,index ,@val)))
;;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
;; Symbol objects
;; A symbol is represented by an object vector of length 4
;; slot 0 = symbol name (a string or a fixnum <n> for a symbol named "g<n>")
;; slot 1 = hash code (non-negative fixnum)
;; slot 2 = link to next symbol in symbol table (#f for uninterned)
;; slot 3 = pointer to corresponding global variable (0 if none exists)
(##define-macro (macro-make-uninterned-symbol name hash)
`(##subtype-set!
(##vector ,name ,hash #f 0)
(macro-subtype-symbol)))
(##define-macro (macro-symbol-name s) `(macro-slot 0 ,s))
(##define-macro (macro-symbol-name-set! s x) `(macro-slot 0 ,s ,x))
(##define-macro (macro-symbol-hash s) `(macro-slot 1 ,s))
(##define-macro (macro-symbol-hash-set! s x) `(macro-slot 1 ,s ,x))
(##define-macro (macro-symbol-next s) `(macro-slot 2 ,s))
(##define-macro (macro-symbol-next-set! s x) `(macro-slot 2 ,s ,x))
;;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
;; Keyword objects
;; A keyword is represented by an object vector of length 3
;; slot 0 = keyword name (a string or a fixnum <n> for a keyword named "g<n>")
;; slot 1 = hash code (non-negative fixnum)
;; slot 2 = link to next keyword in keyword table (#f for uninterned)
(##define-macro (macro-make-uninterned-keyword name hash)
`(##subtype-set!
(##vector ,name ,hash #f)
(macro-subtype-keyword)))
(##define-macro (macro-keyword-name k) `(macro-slot 0 ,k))
(##define-macro (macro-keyword-name-set! k x) `(macro-slot 0 ,k ,x))
(##define-macro (macro-keyword-hash k) `(macro-slot 1 ,k))
(##define-macro (macro-keyword-hash-set! k x) `(macro-slot 1 ,k ,x))
(##define-macro (macro-keyword-next k) `(macro-slot 2 ,k))
(##define-macro (macro-keyword-next-set! k x) `(macro-slot 2 ,k ,x))
;;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
;; Will objects
;; A will is represented by an object vector of length 3
;; slot 0 = link to next will in list of non-executable wills
;; slot 1 = testator
;; slot 2 = action procedure
(##define-macro (macro-make-will testator action)
`(##make-will ,testator ,action))
(##define-macro (macro-will-testator w) `(macro-slot 1 ,w))
(##define-macro (macro-will-testator-set! w x) `(macro-slot 1 ,w ,x))
(##define-macro (macro-will-action w) `(macro-slot 2 ,w))
(##define-macro (macro-will-action-set! w x) `(macro-slot 2 ,w ,x))
(##define-macro (macro-will-execute! will)
`(let ((will ,will))
(##declare (not interrupts-enabled))
(let ((testator (macro-will-testator will))
(action (macro-will-action will)))
(macro-will-testator-set! will #f) ;; zap testator
(macro-will-action-set! will #f) ;; and action procedure
(let ()
(##declare (interrupts-enabled))
(if action
(action testator))
(##void)))))
;;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
;; GC hash tables
;; A GC hash table is represented by an object vector
;; slot 0 = link to next GC hash table
;; slot 1 = flags (1=weak keys, 2=weak values, 4=need rehashing, ...)
;; slot 2 = na (number of allocations before need to grow)
;; slot 3 = nd (number of deallocations before need to shrink)
;; slot 4 = key of entry #0
;; slot 5 = value of entry #0
(##define-macro (macro-gc-hash-table-nb-entries ht)
`(##fixnum.arithmetic-shift-right
(##fixnum.- (##vector-length ,ht) (macro-gc-hash-table-key0))
1))
(##define-macro (macro-gc-hash-table-minimal-nb-entries) 5)
(##define-macro (macro-make-minimal-gc-hash-table flags count)
`(let ((ht
(##vector
0
,flags
,count
0 ;; min-count
4 ;; free
(macro-unused-obj) (macro-unused-obj)
(macro-unused-obj) (macro-unused-obj)
(macro-unused-obj) (macro-unused-obj)
(macro-unused-obj) (macro-unused-obj)
(macro-unused-obj) (macro-unused-obj))))
(##subtype-set! ht (macro-subtype-weak))
ht))
(##define-macro (macro-make-gc-hash-table flags count min-count free length)
`(let ((ht
(##make-vector
(##fixnum.+ (##fixnum.arithmetic-shift-left ,length 1)
(macro-gc-hash-table-key0))
(macro-unused-obj))))
(macro-gc-hash-table-flags-set! ht ,flags)
(macro-gc-hash-table-count-set! ht ,count)
(macro-gc-hash-table-min-count-set! ht ,min-count)
(macro-gc-hash-table-free-set! ht ,free)
(##subtype-set! ht (macro-subtype-weak))
ht))
(##define-macro (macro-gc-hash-table-flags ht) `(macro-slot 1 ,ht))
(##define-macro (macro-gc-hash-table-flags-set! ht x) `(macro-slot 1 ,ht ,x))
(##define-macro (macro-gc-hash-table-count ht) `(macro-slot 2 ,ht))
(##define-macro (macro-gc-hash-table-count-set! ht x) `(macro-slot 2 ,ht ,x))
(##define-macro (macro-gc-hash-table-min-count ht) `(macro-slot 3 ,ht))
(##define-macro (macro-gc-hash-table-min-count-set! ht x)`(macro-slot 3 ,ht ,x))
(##define-macro (macro-gc-hash-table-free ht) `(macro-slot 4 ,ht))
(##define-macro (macro-gc-hash-table-free-set! ht x) `(macro-slot 4 ,ht ,x))
(##define-macro (macro-gc-hash-table-key0) 5)
(##define-macro (macro-gc-hash-table-val0) 6)
(##define-macro (macro-gc-hash-table-flag-weak-keys) 1)
(##define-macro (macro-gc-hash-table-flag-weak-vals) 2)
(##define-macro (macro-gc-hash-table-flag-key-moved) 4)
(##define-macro (macro-gc-hash-table-flag-entry-deleted) 8)
(##define-macro (macro-gc-hash-table-flag-mem-alloc-keys) 16)
(##define-macro (macro-gc-hash-table-flag-need-rehash) 32)
(##define-macro (macro-gc-hash-table-key-ref ht i*2)
`(##vector-ref ,ht (##fixnum.+ ,i*2 (macro-gc-hash-table-key0))))
(##define-macro (macro-gc-hash-table-key-set! ht i*2 x)
`(##vector-set! ,ht (##fixnum.+ ,i*2 (macro-gc-hash-table-key0)) ,x))
(##define-macro (macro-gc-hash-table-val-ref ht i*2)
`(##vector-ref ,ht (##fixnum.+ ,i*2 (macro-gc-hash-table-val0))))
(##define-macro (macro-gc-hash-table-val-set! ht i*2 x)
`(##vector-set! ,ht (##fixnum.+ ,i*2 (macro-gc-hash-table-val0)) ,x))
;;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
;; Continuation objects
;; A continuation is represented by an object vector of length 2
;; slot 0 = frame object
;; slot 1 = dynamic-environment
(##define-macro (macro-continuation-frame c) `(macro-slot 0 ,c))
(##define-macro (macro-continuation-frame-set! c x) `(macro-slot 0 ,c ,x))
(##define-macro (macro-continuation-denv c) `(macro-slot 1 ,c))
(##define-macro (macro-continuation-denv-set! c x) `(macro-slot 1 ,c ,x))
;;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
;; Promise objects
;; A promise is represented by an object vector of length 2
;; slot 0 = thunk
;; slot 1 = result (eq? to promise object itself when not yet determined)
(##define-macro (macro-make-promise thunk)
`(##make-promise thunk))
(##define-macro (macro-promise-thunk p) `(macro-slot 0 ,p))
(##define-macro (macro-promise-thunk-set! p x) `(macro-slot 0 ,p ,x))
(##define-macro (macro-promise-result p) `(macro-slot 1 ,p))
(##define-macro (macro-promise-result-set! p x) `(macro-slot 1 ,p ,x))
;;;----------------------------------------------------------------------------
(##define-macro (macro-if-forces forces noforces)
(if (memq 'force ##compilation-options)
forces
noforces))
(##define-macro (macro-force-vars vars expr)
(if (memq 'force ##compilation-options)
`(let ,(map (lambda (x) `(,x (##force ,x))) vars) ,expr)
expr))
(##define-macro (macro-if-checks checks nochecks)
(if (memq 'check ##compilation-options)
checks
nochecks))
(##define-macro (macro-no-force vars expr)
expr)
(##define-macro (macro-no-check var arg-num form expr)
expr)
(##define-macro
(define-prim-fold bool? form zero one two forcing pre-check . post-checks)
(let* ((name-fn (car form))
(name-param1 (cadr form))
(name-param2 (caddr form))
(name-others 'others)
(name-result 'result)
(name-folded-result 'folded-result)
(param-name-map
(list (cons name-param1 'param1) (cons name-param2 'param2)))
(two-wrap
(if (pair? (cadr two)) (car two) #f))
(two-call
(if (pair? (cadr two)) (cadr two) two)))
(define (param-name sym)
(cdr (assq sym param-name-map)))
(define (rewrite expr)
(let ((x (assq expr param-name-map)))
(if x
(cdr x)
(if (pair? expr)
(cons (car expr)
(map rewrite (cdr expr)))
expr))))
(define (parameter-list)
(if (null? zero)
;; 1 or more arguments
(list (param-name name-param1)
'#!optional
(list (param-name name-param2) '(macro-absent-obj))
'#!rest
name-others)
;; 0 or more arguments
(list '#!optional
(list (param-name name-param1) '(macro-absent-obj))
(list (param-name name-param2) '(macro-absent-obj))
'#!rest
name-others)))
(define (add-post-checks wrap expr arg-num cont)
(define (add-wrap x)
(if wrap
(list wrap x)
x))
(define (inside lst)
(if (null? lst)
(if cont
(cont (add-wrap name-result))
(add-wrap name-result))
(let ((check (car lst)))
(list 'if
(list (car check) name-result)
(append (list (cadr check))
(if (eq? (car check) '##pair?)
(let ((x (list '##car name-result)))
(list (if arg-num
(list '##fixnum.+ arg-num x)
x)))
'())
(list ''()
name-fn
(param-name name-param1)
(param-name name-param2)
name-others))
(inside (cdr lst))))))
(if (or cont (not (null? post-checks)))
(list 'let
(list (list name-result expr))
(inside post-checks))
(add-wrap expr)))
(define (add-forcing names expr)
(list forcing
names
expr))
(define (add-pre-check name arg-num expr)
(list pre-check
name
arg-num
(cons name-fn
(cons (param-name name-param1)
(cons (param-name name-param2)
name-others)))
expr))
(define (exactly-1-arg)
(add-forcing
(list (param-name name-param1))
(add-pre-check
(param-name name-param1)
1
(if (pair? one)
(add-post-checks
#f
(rewrite one)
#f
#f)
(rewrite one)))))
(define (exactly-2-args)
(add-post-checks
two-wrap
(rewrite two-call)
#f
#f))
(define (at-least-2-args)
(list 'let
'loop
(append (if bool?
(list (list name-folded-result #t))
'())
(list (list name-param1 (param-name name-param1))
(list name-param2 (param-name name-param2))
(list 'lst name-others)
(list 'arg-num 0)))
(add-post-checks
two-wrap
two-call
'arg-num
(lambda (result)
(list 'if
'(##null? lst)
(if bool?
(list 'and
result
name-folded-result)
result)
(list 'let
'((next (##car lst)))
(add-forcing
'(next)
(add-pre-check
'next
'(##fixnum.+ arg-num 3)
(if bool?
(list 'loop
(list 'and
result
name-folded-result)
name-param2
'next
'(##cdr lst)
'(##fixnum.+ arg-num 1))
(list 'loop
result
'next
'(##cdr lst)
'(##fixnum.+ arg-num 1)))))))))))
(define (body)
(cons 'cond
(cons (list (list '##not
(list '##eq?
(param-name name-param2)
'(macro-absent-obj)))
(add-forcing
(list (param-name name-param1)
(param-name name-param2))
(add-pre-check
(param-name name-param1)
1
(add-pre-check
(param-name name-param2)
2
(list 'if
(list '##null? name-others)
(exactly-2-args)
(at-least-2-args))))))
(append (if (null? zero)
'()
(list (list (list '##eq?
(param-name name-param1)
'(macro-absent-obj))
zero)))
(list (list 'else
(exactly-1-arg)))))))
(list 'define-prim
name-fn
(list 'lambda
(parameter-list)
(body)))))
(##define-macro
(define-prim-nary form zero one two forcing pre-check . post-checks)
`(define-prim-fold #f ,form ,zero ,one ,two ,forcing ,pre-check ,@post-checks))
(##define-macro
(define-prim-nary-bool form zero one two forcing pre-check . post-checks)
`(define-prim-fold #t ,form ,zero ,one ,two ,forcing ,pre-check ,@post-checks))
(##define-macro (define-check-type type-id type predicate . arguments)
(define (sym . lst)
(string->symbol (apply string-append (map symbol->string lst))))
(let ()
(define macro-check-type (sym 'macro-check- type-id))
(define ##fail-check-type (sym '##fail-check- type-id))
`(begin
(##define-macro (,(sym 'implement-check-type- type-id));;;;;;;;;;
'(define-fail-check-type ,type-id ,type))
(##define-macro (,macro-check-type var arg-num form expr)
(define (rest-param x)
(if (pair? x)
(rest-param (cdr x))
x))
(define (nonrest-params x)
(if (pair? x)
(cons (car x) (nonrest-params (cdr x)))
'()))
(define (key-params x)
(if (pair? x)
(if (keyword? (car x))
(cons (car x) (cons (cadr x) (key-params (cddr x))))
(key-params (cdr x)))
'()))
(define (prekey-params x)
(if (or (not (pair? x)) (keyword? (car x)))
'()
(cons (car x) (prekey-params (cdr x)))))
(define (failure name)
(let* ((k (key-params (cdr form)))
(r (rest-param (cdr form)))
(nr (nonrest-params (cdr form)))
(pk (prekey-params nr)))
(if (and (null? k) (not (null? r)))
`(,name ,arg-num '() ,(car form) ,@pk ,r)
`(,name
,arg-num
,(if (and (null? k) (null? r))
(car form)
`(##list ,(car form) ,@k ,@(if (null? r) '() (list r))))
,@pk))))
`(macro-if-checks
(if (,',predicate ,var ,@',arguments)
,expr
,(failure ',##fail-check-type))
,expr)))))
(##define-macro (define-check-index-range-macro type-id predicate . arguments)
(define (sym . lst)
(string->symbol (apply string-append (map symbol->string lst))))
(let ()
(define macro-check-type (sym 'macro-check- type-id))
`(##define-macro (,macro-check-type var arg-num ,@arguments form expr)
(define (rest-param x)
(if (pair? x)
(rest-param (cdr x))
x))
(define (nonrest-params x)
(if (pair? x)
(cons (car x) (nonrest-params (cdr x)))
'()))
(define (key-params x)
(if (pair? x)
(if (keyword? (car x))
(cons (car x) (cons (cadr x) (key-params (cddr x))))
(key-params (cdr x)))
'()))
(define (prekey-params x)
(if (or (not (pair? x)) (keyword? (car x)))
'()
(cons (car x) (prekey-params (cdr x)))))
(define (failure name)
(let* ((k (key-params (cdr form)))
(r (rest-param (cdr form)))
(nr (nonrest-params (cdr form)))
(pk (prekey-params nr)))
`(,name
,arg-num
,(if (and (null? k) (null? r))
(car form)
`(##list ,(car form) ,@k ,@(if (null? r) '() (list r))))
,@pk)))
`(macro-if-checks
(if (##fixnum? ,var)
(if (,',predicate ,var ,@,(cons 'list arguments))
,expr
,(failure '##raise-range-exception))
(if (##bignum? ,var)
,(failure '##raise-range-exception)
,(failure '##fail-check-exact-integer)))
,expr))))
(##define-macro (define-fail-check-type type-name . type-id)
(define (sym . lst)
(string->symbol (apply string-append (map symbol->string lst))))
(let ()
(define ##fail-check-type (sym '##fail-check- type-name))
`(define-prim (,##fail-check-type arg-num proc . args)
(##raise-type-exception
arg-num
,(if (pair? type-id) (car type-id) `',type-name)
proc
args))))
(##define-macro (define-library-type . args)
`(define-library-type-expand define-type define-library-type ,@args))
(##define-macro (define-library-type-expand type-definer form-name . args)
(define (generate
name
flags
id
extender
constructor
constant-constructor
predicate
implementer
type-exhibitor
prefix
fields
total-fields)
(let ((check
(##symbol-append 'macro-check- name)))
(define (generate-getter-and-setter field tail)
(let* ((descr
(##cdr field))
(field-name
(##vector-ref descr 0))
(field-index
(##vector-ref descr 1))
(getter
(##vector-ref descr 2))
(setter
(##vector-ref descr 3))
(getter-def
(if getter
(let ((getter-name
(if (##eq? getter #t)
(##symbol-append prefix
name
'-
field-name)
getter))
(macro-getter-name
(if (##eq? getter #t)
(##symbol-append 'macro-
name
'-
field-name)
(##symbol-append 'macro-
getter))))
`((define-prim (,getter-name obj)
(macro-force-vars (obj)
(,check
obj
1
(,getter-name obj)
(,macro-getter-name obj))))))
`()))
(setter-def
(if setter
(let ((setter-name
(if (##eq? setter #t)
(##symbol-append prefix
name
'-
field-name
'-set!)
setter))
(macro-setter-name
(if (##eq? setter #t)
(##symbol-append 'macro-
name
'-
field-name
'-set!)
(##symbol-append 'macro-
setter))))
`((define-prim (,setter-name obj val)
(macro-force-vars (obj)
(,check
obj
1
(,setter-name obj val)
(,macro-setter-name obj val))))))
`())))
(##append getter-def (##append setter-def tail))))
(define (generate-constructor-predicate-getters-setters)
`(,@(if #f;constructor;;;;;;;;;;;
`((define-prim (,(##car constructor) ,@parameters)
...));;;;;;;;;;
`())
,@(if predicate
`((define-prim (,predicate obj)
(macro-force-vars (obj)
(,(##symbol-append 'macro- name '?) obj))))
`())
,@(let loop ((lst1 (##reverse fields))
(lst2 '()))
(if (##pair? lst1)
(loop (##cdr lst1)
(generate-getter-and-setter (##car lst1) lst2))
lst2))))
`(begin
(##define-macro (,(##symbol-append 'implement-library-type- name))
`(begin
(,',(##symbol-append 'implement-type- name))
(,',(##symbol-append 'implement-check-type- name))
,@',(generate-constructor-predicate-getters-setters)))
,@(if extender
`((##define-macro (,extender . args)
`(define-library-type-expand
,',(##symbol-append 'define-type-of- name)
,',extender
,@args)))
`())
(,type-definer ,name
,@(if id
`(id: ,id)
`())
,@(if (##fixnum.= (##fixnum.bitwise-and flags 1) 0)
`()
`(opaque:))
,@(if extender
`(extender: ,(##symbol-append 'define-type-of- name))
`())
macros:
prefix: macro-
type-exhibitor: ,(##symbol-append 'macro-type- name)
constructor: ,(##symbol-append 'macro-make- name)
constant-constructor: ,(##symbol-append 'macro-make-constant- name)
implementer: ,(##symbol-append 'implement-type- name)
,@(##map (lambda (field)
(let* ((descr
(##cdr field))
(field-name
(##vector-ref descr 0))
(getter
(##vector-ref descr 2))
(setter
(##vector-ref descr 3))
(options
(##vector-ref descr 4))
(attributes
(##vector-ref descr 5)))
`(,field-name
,@(if (##symbol? getter)
`(,getter)
`())
,@(if (##symbol? setter)
`(,setter)
`())
,@(if (##fixnum.= (##fixnum.bitwise-and options 1) 0)
`()
`(unprintable:))
,@(if (##fixnum.= (##fixnum.bitwise-and options 2) 0)
`()
`(read-only:))
,@(if (##fixnum.= (##fixnum.bitwise-and options 4) 0)
`()
`(equality-skip:))
,@(let loop ((lst1 attributes)
(lst2 '()))
(if (##pair? lst1)
(loop (##cdr lst1)
(let ((x (##car lst1)))
(##cons (##car x)
(##cons (##cdr x)
lst2))))
(##reverse lst2))))))
fields))
(define-check-type
,name