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Source for ticket #167
cc
changetime
2012-11-29 02:13:36
component
WG1 - Core
description
(Email from Vincent Manis)
Problem: Raising arbitrary objects as exceptions has been found to be nasty in some other languages (Python and C++ in particular).
This one is a tad speculative, but I'm reluctant to encourage people to write things like `(raise 4)`, because of course it doesn't respect any module boundaries. I think the intent with the descriptions of `raise` and `raise-continuable` was to allow exception hierarchies to be added in WG2 without constraining them here. I would suggest adding a new procedure:
`(make-error-object `''message''` `''obj'' ...`)`
to creates the implementation-defined object `error` is supposed to create, and adding a sentence to the `raise` and `raise-continuable` entries that says "The effect of applying this procedure to an object not created via `make-error-object` is implementation-defined." This allows WG2 to do what it wants regarding exception objects, and to limit the types of exception objects allowed, without breaking anything in WG1. `Error` can be defined as:
{{{
(define (error message . objs)
(apply make-error-object message objs))
}}}
id
167
keywords
milestone
owner
alexshinn
priority
major
reporter
cowan
resolution
wontfix
severity
status
closed
summary
Add constructor for error objects
time
2011-05-01 02:51:46
type
defect
Changes
Change at time 2012-11-29 02:13:36
author
cowan
field
comment
newvalue
oldvalue
3
raw-time
1354126416995336
ticket
167
time
2012-11-29 02:13:36
Change at time 2012-11-29 02:13:36
author
cowan
field
resolution
newvalue
wontfix
oldvalue
raw-time
1354126416995336
ticket
167
time
2012-11-29 02:13:36
Change at time 2012-11-29 02:13:36
author
cowan
field
status
newvalue
closed
oldvalue
reopened
raw-time
1354126416995336
ticket
167
time
2012-11-29 02:13:36
Change at time 2012-11-29 02:13:30
author
cowan
field
comment
newvalue
oldvalue
2
raw-time
1354126410175644
ticket
167
time
2012-11-29 02:13:30
Change at time 2012-11-29 02:13:30
author
cowan
field
resolution
newvalue
oldvalue
fixed
raw-time
1354126410175644
ticket
167
time
2012-11-29 02:13:30
Change at time 2012-11-29 02:13:30
author
cowan
field
status
newvalue
reopened
oldvalue
closed
raw-time
1354126410175644
ticket
167
time
2012-11-29 02:13:30
Change at time 2011-07-10 18:19:54
author
alexshinn
field
comment
newvalue
We voted no.
oldvalue
1
raw-time
1310296794000000
ticket
167
time
2011-07-10 18:19:54
Change at time 2011-07-10 18:19:54
author
alexshinn
field
resolution
newvalue
fixed
oldvalue
raw-time
1310296794000000
ticket
167
time
2011-07-10 18:19:54
Change at time 2011-07-10 18:19:54
author
alexshinn
field
status
newvalue
closed
oldvalue
new
raw-time
1310296794000000
ticket
167
time
2011-07-10 18:19:54