From cef06e3121e0805235d585b05cf189f850047a41 Mon Sep 17 00:00:00 2001 From: Abdulaziz Ghuloum Date: Wed, 12 Dec 2007 19:34:28 -0500 Subject: [PATCH] removed "closed?" field from port struct. --- scheme/ikarus.io.ss | 74 +++++++++++++++++++++++--------------------- scheme/last-revision | 2 +- 2 files changed, 39 insertions(+), 37 deletions(-) diff --git a/scheme/ikarus.io.ss b/scheme/ikarus.io.ss index 00c0b15..b016cbd 100644 --- a/scheme/ikarus.io.ss +++ b/scheme/ikarus.io.ss @@ -15,20 +15,19 @@ (library (ikarus system $io) (export $make-port $port-tag $port-id $port-cookie - port? $port-closed? $port-transcoder $set-port-closed?! + port? $port-transcoder $port-index $port-size $port-buffer $port-base-index $port-get-position $port-set-position! $port-close $port-read! $port-write! $set-port-index! $set-port-size! $port-attrs $set-port-attrs! $port-fast-attrs) (import (except (ikarus) port?)) (define-struct $port - (attrs index size buffer base-index transcoder closed? + (attrs index size buffer base-index transcoder id read! write! get-position set-position! close cookie)) (define port? $port?) (define $set-port-index! set-$port-index!) (define $set-port-size! set-$port-size!) (define $set-port-attrs! set-$port-attrs!) - (define $set-port-closed?! set-$port-closed?!) (define $make-port make-$port) (define fast-attrs-mask #b01111111) (define ($port-tag x) (if ($port? x) ($port-attrs x) 0)) @@ -151,29 +150,31 @@ ;;; everything above this line will turn into primitive ;;; ---------------------------------------------------------- - (define input-port-tag #b00000001) - (define output-port-tag #b00000010) - (define textual-port-tag #b00000100) - (define binary-port-tag #b00001000) - (define fast-char-text-tag #b00010000) - (define fast-u7-text-tag #b00100000) - (define fast-u8-text-tag #b01100000) - (define r6rs-mode-tag #b10000000) + (define input-port-tag #b000000001) + (define output-port-tag #b000000010) + (define textual-port-tag #b000000100) + (define binary-port-tag #b000001000) + (define fast-char-text-tag #b000010000) + (define fast-u7-text-tag #b000100000) + (define fast-u8-text-tag #b001100000) + (define r6rs-mode-tag #b010000000) + (define closed-port-tag #b100000000) - (define binary-input-port-bits #b00001001) - (define binary-output-port-bits #b00001010) - (define textual-input-port-bits #b00000101) - (define textual-output-port-bits #b00000110) + (define port-type-mask #b000001111) + (define binary-input-port-bits #b000001001) + (define binary-output-port-bits #b000001010) + (define textual-input-port-bits #b000000101) + (define textual-output-port-bits #b000000110) - (define fast-get-byte-tag #b00001001) - (define fast-get-char-tag #b00010101) - (define fast-get-utf8-tag #b00100101) - (define fast-get-latin-tag #b01100101) + (define fast-get-byte-tag #b000001001) + (define fast-get-char-tag #b000010101) + (define fast-get-utf8-tag #b000100101) + (define fast-get-latin-tag #b001100101) - (define fast-put-byte-tag #b00001010) - (define fast-put-char-tag #b00010110) - (define fast-put-utf8-tag #b00100110) - (define fast-put-latin-tag #b01100110) + (define fast-put-byte-tag #b000001010) + (define fast-put-char-tag #b000010110) + (define fast-put-utf8-tag #b000100110) + (define fast-put-latin-tag #b001100110) (define (input-port-name p) (if (input-port? p) @@ -207,13 +208,13 @@ (define ($make-custom-binary-port attrs init-size id read! write! get-position set-position! close buffer-size) (let ([bv (make-bytevector buffer-size)]) - ($make-port attrs 0 init-size bv 0 #f #f id read! write! get-position + ($make-port attrs 0 init-size bv 0 #f id read! write! get-position set-position! close #f))) (define ($make-custom-textual-port attrs init-size id read! write! get-position set-position! close buffer-size) (let ([bv (make-string buffer-size)]) - ($make-port attrs 0 init-size bv 0 #t #f id read! write! get-position + ($make-port attrs 0 init-size bv 0 #t id read! write! get-position set-position! close #f))) (define (make-custom-binary-input-port id @@ -318,7 +319,6 @@ (input-transcoder-attrs maybe-transcoder) 0 (bytevector-length bv) bv 0 maybe-transcoder - #f ;;; closed? "*bytevector-input-port*" (lambda (bv i c) 0) ;;; read! #f ;;; write! @@ -340,7 +340,6 @@ (output-transcoder-attrs transcoder) 0 buffer-size (make-bytevector buffer-size) 0 transcoder - #f "*bytevector-output-port*" #f (lambda (bv i c) @@ -403,7 +402,6 @@ (fxior textual-output-port-bits fast-char-text-tag) 0 buffer-size (make-string buffer-size) 0 #t ;;; transcoder - #f "*string-output-port*" #f (lambda (str i c) @@ -443,7 +441,6 @@ (fxior textual-input-port-bits fast-char-text-tag) 0 (string-length str) str 0 #t ;;; transcoder - #f ;;; closed? "*string-input-port*" (lambda (str i c) 0) ;;; read! #f ;;; write! @@ -459,10 +456,10 @@ (error who "not a transcoder" transcoder)) (unless (port? p) (error who "not a port" p)) (when ($port-transcoder p) (error who "not a binary port" p)) + (when ($port-closed? p) (error who "cannot transcode closed port" p)) (let ([read! ($port-read! p)] - [write! ($port-write! p)] - [closed? ($port-closed? p)]) - ($set-port-closed?! p #t) + [write! ($port-write! p)]) + ($mark-port-closed! p) (guarded-port ($make-port (cond @@ -476,7 +473,6 @@ ($port-buffer p) ($port-base-index p) transcoder - closed? ($port-id p) read! write! @@ -496,6 +492,14 @@ (and (transcoder? tr) tr)) (error 'port-transcoder "not a port" p))) + (define ($port-closed? p) + (not (fxzero? (fxand ($port-attrs p) closed-port-tag)))) + (define ($mark-port-closed! p) + ($set-port-attrs! p + (fxior closed-port-tag + (fxand ($port-attrs p) port-type-mask)))) + + (define (port-mode p) (if (port? p) (if (fxzero? (fxand ($port-attrs p) r6rs-mode-tag)) @@ -548,7 +552,7 @@ [else (when ($port-write! p) (flush-output-port p)) - ($set-port-closed?! p #t) + ($mark-port-closed! p) (let ([close ($port-close p)]) (when (procedure? close) (close)))])) @@ -1073,7 +1077,6 @@ (input-transcoder-attrs transcoder) 0 0 (make-bytevector size) 0 transcoder - #f ;;; closed? id (lambda (bv idx cnt) (let ([bytes @@ -1098,7 +1101,6 @@ (output-transcoder-attrs transcoder) 0 size (make-bytevector size) 0 transcoder - #f ;;; closed? id #f (lambda (bv idx cnt) diff --git a/scheme/last-revision b/scheme/last-revision index fe1b060..f954c7a 100644 --- a/scheme/last-revision +++ b/scheme/last-revision @@ -1 +1 @@ -1228 +1229