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Code of fasl-write is changed to use only binary output prims.

This commit is contained in:
Abdulaziz Ghuloum 2007-12-08 14:52:35 -05:00
parent 515101d188
commit 0e93ac2db9
4 changed files with 132 additions and 60 deletions
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89
lab/io-spec.ss
View File

@ -1,20 +1,51 @@
(library (io-spec)
(export
input-port? textual-port? port-eof?
input-port? output-port? textual-port? binary-port?
open-file-input-port standard-input-port current-input-port
open-bytevector-input-port
open-string-input-port
make-custom-binary-input-port
get-char lookahead-char get-u8 lookahead-u8 close-port
transcoded-port)
transcoded-port port-transcoder
close-port
port-eof?
get-char lookahead-char
get-string-n get-string-n! get-string-all get-line
get-u8 lookahead-u8
get-bytevector-n get-bytevector-n!
get-bytevector-some get-bytevector-all
port-has-port-position? port-position
port-has-set-port-position!? set-port-position!
call-with-port
)
(import
(except (ikarus)
input-port? textual-port? port-eof?
input-port? output-port? textual-port? binary-port?
open-file-input-port standard-input-port current-input-port
open-bytevector-input-port
open-string-input-port
make-custom-binary-input-port
get-char lookahead-char get-u8 lookahead-u8 close-port
transcoded-port))
transcoded-port port-transcoder
close-port
port-eof?
get-char lookahead-char
get-string-n get-string-n! get-string-all get-line
get-u8 lookahead-u8
get-bytevector-n get-bytevector-n!
get-bytevector-some get-bytevector-all
port-has-port-position? port-position
port-has-set-port-position!? set-port-position!
call-with-port
))
(define-syntax define-rrr
(syntax-rules ()
[(_ name)
(define (name . args)
(apply error 'name "not implemented" args))]))
(define-struct $port
(index size buffer base-index transcoder closed? attrs
@ -150,6 +181,10 @@
($port-close p))))
(define (output-port? p)
(and ($port? p)
($port-write! p)
#t))
(define (input-port? p)
(and ($port? p)
@ -161,6 +196,16 @@
($port-transcoder p)
#t))
(define (binary-port? p)
(and ($port? p)
(not ($port-transcoder p))))
(define (port-transcoder p)
(if ($port? p)
(let ([tr ($port-transcoder p)])
(and (transcoder? tr) tr))
(error 'port-transcoder "not a port" p)))
(define (close-port p)
(cond
[(not ($port? p))
@ -174,11 +219,10 @@
(when (procedure? close)
(close)))]))
(define-syntax define-rrr
(syntax-rules ()
[(_ name)
(define (name . args)
(apply error 'name "not implemented" args))]))
(define-rrr port-has-port-position?)
(define-rrr port-position)
(define-rrr port-has-set-port-position!?)
(define-rrr set-port-position!)
;;; ----------------------------------------------------------
(module (get-char lookahead-char)
@ -412,7 +456,6 @@
[else (get-char-utf8-mode p who)]))])]
[else (do-error p who)]))])))
(define (advance-utf8-bom p who)
(let ([i ($port-index p)]
[j ($port-size p)]
@ -624,7 +667,29 @@
(eof-object? (lookahead-u8 p)))]
[else (error 'port-eof? "not an input port" p)])))
(define-rrr open-file-input-port)
(define-rrr standard-input-port)
(define-rrr current-input-port)
(define (call-with-port p proc)
(if ($port? p)
(if (procedure? proc)
(dynamic-wind
void
(lambda () (proc p))
(lambda () (close-port p)))
(error 'call-with-port "not a procedure" proc))
(error 'call-with-port "not a port" p)))
(define-rrr get-bytevector-n)
(define-rrr get-bytevector-n!)
(define-rrr get-bytevector-some)
(define-rrr get-bytevector-all)
(define-rrr get-string-n)
(define-rrr get-string-n!)
(define-rrr get-string-all)
(define-rrr get-line)
)

9
lab/io-test.ss
View File

@ -1,8 +1,13 @@
#!/usr/bin/env scheme-script
(import
(except (ikarus) get-char get-u8 lookahead-u8 close-port input-port?
open-string-input-port)
(except (ikarus) get-char get-u8 lookahead-u8 close-port
input-port? open-string-input-port output-port?
standard-input-port current-input-port
get-bytevector-n get-bytevector-n!
get-string-n get-string-n! get-line)
(io-spec))
(define-syntax test

92
scheme/ikarus.fasl.write.ss
View File

@ -30,7 +30,10 @@
(ikarus system $bignums)
(except (ikarus code-objects) procedure-annotation)
(except (ikarus) fasl-write))
(define (put-tag c p)
(write-byte (char->integer c) p))
(define write-fixnum
(lambda (x p)
(unless (fixnum? x) (error 'write-fixnum "not a fixnum" x))
@ -48,25 +51,23 @@
(define fasl-write-immediate
(lambda (x p)
(cond
[(null? x) (write-char #\N p)]
[(null? x) (put-tag #\N p)]
[(fixnum? x)
(write-char #\I p)
(put-tag #\I p)
(write-fixnum x p)]
[(char? x)
(let ([n ($char->fixnum x)])
(if ($fx<= n 255)
(begin
(write-char #\c p)
(put-tag #\c p)
(write-byte n p))
(begin
(write-char #\C p)
(put-tag #\C p)
(write-int n p))))]
; (write-char #\C p)
; (write-char x p)]
[(boolean? x)
(write-char (if x #\T #\F) p)]
[(eof-object? x) (write-char #\E p)]
[(eq? x (void)) (write-char #\U p)]
(put-tag (if x #\T #\F) p)]
[(eof-object? x) (put-tag #\E p)]
[(eq? x (void)) (put-tag #\U p)]
[else (error 'fasl-write "not a fasl-writable immediate" x)])))
(define (ascii-string? s)
@ -74,13 +75,13 @@
(or ($fx= i n)
(and ($char<= ($string-ref s i) ($fixnum->char 127))
(f s ($fxadd1 i) n)))))
(define (count-unshared-cdrs x h n)
(cond
[(and (pair? x) (eq? (hashtable-ref h x #f) 0))
(count-unshared-cdrs ($cdr x) h ($fxadd1 n))]
[else n]))
(define (write-pairs x p h m n)
(cond
[($fx= n 0) (fasl-write-object x p h m)]
@ -97,22 +98,22 @@
(let ([n (count-unshared-cdrs d h 0)])
(cond
[($fx= n 0)
(write-char #\P p)
(put-tag #\P p)
(fasl-write-object d p h
(fasl-write-object (car x) p h m))]
[else
(cond
[($fx<= n 255)
(write-char #\l p)
(put-tag #\l p)
(write-byte n p)]
[else
(write-char #\L p)
(put-tag #\L p)
(write-int n p)])
(write-pairs d p h
(fasl-write-object (car x) p h m)
n)])))]
[(vector? x)
(write-char #\V p)
(put-tag #\V p)
(write-int (vector-length x) p)
(let f ([x x] [i 0] [n (vector-length x)] [m m])
(cond
@ -123,14 +124,14 @@
[(string? x)
(cond
[(ascii-string? x)
(write-char #\s p)
(put-tag #\s p)
(write-int (string-length x) p)
(let f ([x x] [i 0] [n (string-length x)])
(unless (fx= i n)
(write-char (string-ref x i) p)
(write-byte (char->integer (string-ref x i)) p)
(f x (fxadd1 i) n)))]
[else
(write-char #\S p)
(put-tag #\S p)
(write-int (string-length x) p)
(let f ([x x] [i 0] [n (string-length x)])
(unless (= i n)
@ -138,14 +139,14 @@
(f x (fxadd1 i) n)))])
m]
[(gensym? x)
(write-char #\G p)
(put-tag #\G p)
(fasl-write-object (gensym->unique-string x) p h
(fasl-write-object (symbol->string x) p h m))]
[(symbol? x)
(write-char #\M p)
(put-tag #\M p)
(fasl-write-object (symbol->string x) p h m)]
[(code? x)
(write-char #\x p)
(put-tag #\x p)
(write-int (code-size x) p)
(write-fixnum (code-freevars x) p)
(let ([m (fasl-write-object ($code-annotation x) p h m)])
@ -159,7 +160,7 @@
(cond
[(eq? rtd (base-rtd))
;;; rtd record
(write-char #\R p)
(put-tag #\R p)
(let ([names (struct-type-field-names x)]
[m
(fasl-write-object (struct-type-symbol x) p h
@ -173,7 +174,7 @@
(fasl-write-object (car names) p h m))])))]
[else
;;; non-rtd record
(write-char #\{ p)
(put-tag #\{ p)
(write-int (length (struct-type-field-names rtd)) p)
(let f ([names (struct-type-field-names rtd)]
[m (fasl-write-object rtd p h m)])
@ -185,16 +186,16 @@
((struct-field-accessor rtd (car names)) x)
p h m))]))]))]
[(procedure? x)
(write-char #\Q p)
(put-tag #\Q p)
(fasl-write-object ($closure-code x) p h m)]
[(bytevector? x)
(write-char #\v p)
(put-tag #\v p)
(let ([n ($bytevector-length x)])
(write-int n p)
(write-bytevector x 0 n p))
m]
[(flonum? x)
(write-char #\f p)
(put-tag #\f p)
(write-byte ($flonum-u8-ref x 7) p)
(write-byte ($flonum-u8-ref x 6) p)
(write-byte ($flonum-u8-ref x 5) p)
@ -205,11 +206,11 @@
(write-byte ($flonum-u8-ref x 0) p)
m]
[(ratnum? x)
(write-char #\r p)
(put-tag #\r p)
(fasl-write-object (numerator x) p h
(fasl-write-object (denominator x) p h m))]
[(bignum? x)
(write-char #\b p)
(put-tag #\b p)
(let ([sz ($bignum-size x)])
(write-int (if ($bignum-positive? x) sz (- sz)) p)
(let f ([i 0])
@ -235,11 +236,11 @@
(do-write x p h m)]
[(fx> mark 0) ; marked but not written
(hashtable-set! h x (fx- 0 m))
(write-char #\> p)
(put-tag #\> p)
(write-int m p)
(do-write x p h (fxadd1 m))]
[else
(write-char #\< p)
(put-tag #\< p)
(write-int (fx- 0 mark) p)
m]))]
[else (error 'fasl-write "BUG: not in hash table" x)])))
@ -290,8 +291,9 @@
(let ([code ($closure-code x)])
(unless (fxzero? (code-freevars code))
(error 'fasl-write
"Cannot write a non-thunk procedure; the one given has free vars"
(code-freevars code)))
"Cannot write a non-thunk procedure; \
the one given has free vars"
(code-freevars code)))
(make-graph code h))]
[(bytevector? x) (void)]
[(flonum? x) (void)]
@ -304,18 +306,18 @@
(lambda (x port)
(let ([h (make-eq-hashtable)])
(make-graph x h)
(write-char #\# port)
(write-char #\@ port)
(write-char #\I port)
(write-char #\K port)
(write-char #\0 port)
(write-char #\1 port)
(put-tag #\# port)
(put-tag #\@ port)
(put-tag #\I port)
(put-tag #\K port)
(put-tag #\0 port)
(put-tag #\1 port)
(fasl-write-object x port h 1)
(void))))
(define fasl-write
(case-lambda
[(x) (fasl-write-to-port x (current-output-port))]
[(x port)
(unless (output-port? port)
(error 'fasl-write "not an output port" port))
(fasl-write-to-port x port)])))
(case-lambda
[(x) (fasl-write-to-port x (current-output-port))]
[(x port)
(unless (output-port? port)
(error 'fasl-write "not an output port" port))
(fasl-write-to-port x port)])))

2
scheme/last-revision
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@ -1 +1 @@
1196
1198