This site is a static rendering of the Trac instance that was used by R7RS-WG1 for its work on R7RS-small (PDF), which was ratified in 2013. For more information, see Home.

Source for ticket #439

cc


    
changetime

    
2012-10-12 04:09:02

    
component

    
WG1 - Core

    
description

    
Formal Comment

Submitter's name: Marc Feeley
Submitter's email: feeley at iro.umontreal.ca
Relevant draft: r7rs draft 6

Type: defect
Priority: major
Relevant section of draft: 6.13.1. Ports

Summary: Bidirectional ports and port-open?

R7RS states that an implementation of Scheme may have bidirectional
ports (because the input and output port types may not be disjoint).
Bidirectional ports may be useful to represent operating devices such
as serial ports, terminals, and network connections.  On some of these
ports it is useful to close the input and output sides separately
(for example closing the output side of a network connection on
which a request was sent, while leaving the input side open to
receive the response).

For this reason, the procedure port-open? is not very informative for
bidirectional ports.  It would be better to separate this into two
procedures so that each direction can be tested independently:

  (input-port-open? port)
  (output-port-open? port)

    
id

    
439

    
keywords

    

    
milestone

    

    
owner

    
cowan

    
priority

    
major

    
reporter

    
alexshinn

    
resolution

    
fixed

    
severity

    

    
status

    
closed

    
summary

    
Formal Comment: Bidirectional ports and port-open?

    
time

    
2012-07-02 04:10:18

    
type

    
defect

    
Changes

    
Change at time 2012-10-12 04:09:02

    
author

    
cowan

    
field

    
comment

    
newvalue

    

    
oldvalue

    
2

    
raw-time

    
1349989742855603

    
ticket

    
439

    
time

    
2012-10-12 04:09:02

    
Change at time 2012-10-12 04:09:02

    
author

    
cowan

    
field

    
resolution

    
newvalue

    
fixed

    
oldvalue

    

    
raw-time

    
1349989742855603

    
ticket

    
439

    
time

    
2012-10-12 04:09:02

    
Change at time 2012-10-12 04:09:02

    
author

    
cowan

    
field

    
status

    
newvalue

    
closed

    
oldvalue

    
accepted

    
raw-time

    
1349989742855603

    
ticket

    
439

    
time

    
2012-10-12 04:09:02

    
Change at time 2012-07-02 09:45:09

    
author

    
cowan

    
field

    
comment

    
newvalue

    

    
oldvalue

    
1

    
raw-time

    
1341197109025197

    
ticket

    
439

    
time

    
2012-07-02 09:45:09

    
Change at time 2012-07-02 09:45:09

    
author

    
cowan

    
field

    
owner

    
newvalue

    
cowan

    
oldvalue

    
alexshinn

    
raw-time

    
1341197109025197

    
ticket

    
439

    
time

    
2012-07-02 09:45:09

    
Change at time 2012-07-02 09:45:09

    
author

    
cowan

    
field

    
status

    
newvalue

    
accepted

    
oldvalue

    
new

    
raw-time

    
1341197109025197

    
ticket

    
439

    
time

    
2012-07-02 09:45:09