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Separating bytes usage for next change

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This commit is contained in:
Jay McCarthy 2010-05-24 12:57:32 -06:00
parent 758b944996
commit f67177f740
1 changed files with 7 additions and 4 deletions
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11
collects/compiler/zo-parse.rkt
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@ -361,6 +361,10 @@
(define-struct cport ([pos #:mutable] shared-start orig-port size bytes symtab shared-offsets decoded rns mpis))
(define (cport-get-bytes cp len)
(subbytes (cport-bytes cp) (cport-pos cp) (+ (cport-pos cp) len)))
(define (cport-get-byte cp pos)
(bytes-ref (cport-bytes cp) pos))
(define (cport-rpos cp)
(+ (cport-pos cp) (cport-shared-start cp)))
@ -369,8 +373,7 @@
(begin-with-definitions
(when ((cport-pos cp) . >= . (cport-size cp))
(error "off the end"))
(define r
(bytes-ref (cport-bytes cp) (cport-pos cp)))
(define r (cport-get-byte cp (cport-pos cp)))
(set-cport-pos! cp (add1 (cport-pos cp)))
r))
@ -436,7 +439,7 @@
(define (read-compact-bytes port c)
(begin0
(subbytes (cport-bytes port) (cport-pos port) (+ (cport-pos port) c))
(cport-get-bytes port c)
(set-cport-pos! port (+ c (cport-pos port)))))
(define (read-compact-chars port c)
@ -742,7 +745,7 @@
v)))]
[(escape)
(let* ([len (read-compact-number cp)]
[s (subbytes (cport-bytes cp) (cport-pos cp) (+ (cport-pos cp) len))])
[s (cport-get-bytes cp len)])
(set-cport-pos! cp (+ (cport-pos cp) len))
(parameterize ([read-accept-compiled #t]
[read-accept-bar-quote #t]