Fcalva/chibi-scheme
1
0
Fork 0
mirror of https://github.com/ashinn/chibi-scheme.git synced 2025-05-20 14:19:18 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

Using brace-notation for write/ss for records not containing any shares.

Browse source
This commit is contained in:
Alex Shinn 2012-06-02 20:11:54 +09:00
parent a56b497a00
commit befe63d6ba
1 changed files with 47 additions and 51 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

98
lib/srfi/38.scm
View file

@ -55,58 +55,54 @@
(set-cdr! cell count)
(set! count (+ count 1))))
(cont x cell)))))
(cond
((null? shared)
(write x out))
(else
(let wr ((x x))
(check-shared
x
""
(lambda (x shared?)
(cond
((pair? x)
(display "(" out)
(wr (car x))
(let lp ((ls (cdr x)))
(check-shared
ls
" . "
(lambda (ls shared?)
(cond ((null? ls))
((pair? ls)
(cond
(shared?
(display "(" out)
(wr (car ls))
(check-shared
(cdr ls)
" . "
(lambda (ls shared?) (lp ls)))
(display ")" out))
(else
(display " " out)
(wr (car ls))
(lp (cdr ls)))))
(let wr ((x x))
(check-shared
x
""
(lambda (x shared?)
(cond
((pair? x)
(display "(" out)
(wr (car x))
(let lp ((ls (cdr x)))
(check-shared
ls
" . "
(lambda (ls shared?)
(cond ((null? ls))
((pair? ls)
(cond
(shared?
(display "(" out)
(wr (car ls))
(check-shared
(cdr ls)
" . "
(lambda (ls shared?) (lp ls)))
(display ")" out))
(else
(display " . " out)
(wr ls))))))
(display ")" out))
((vector? x)
(display "#(" out)
(let ((len (vector-length x)))
(cond ((> len 0)
(wr (vector-ref x 0))
(do ((i 1 (+ i 1)))
((= i len))
(display " " out)
(wr (vector-ref x i))))))
(display ")" out))
((let ((type (type-of x)))
(and (type? type) (type-printer type)))
=> (lambda (printer) (printer x wr out)))
(else
(write x out))))))))))
(display " " out)
(wr (car ls))
(lp (cdr ls)))))
(else
(display " . " out)
(wr ls))))))
(display ")" out))
((vector? x)
(display "#(" out)
(let ((len (vector-length x)))
(cond ((> len 0)
(wr (vector-ref x 0))
(do ((i 1 (+ i 1)))
((= i len))
(display " " out)
(wr (vector-ref x i))))))
(display ")" out))
((let ((type (type-of x)))
(and (type? type) (type-printer type)))
=> (lambda (printer) (printer x wr out)))
(else
(write x out))))))))
(define write/ss write-with-shared-structure)