From: Powell, Gary (powellg_at_[hidden])
Date: 2003-10-17 17:19:30
Actually,
switch_(condition)
[
case_(label1)[expr1],
case_(label2)[expr2],
case_(label3)[expr3]
default_[expr4]
]
----------------------------------
has problems with "default_[expr4]"
but I think
switch_(condition)
[
case_(label1)[expr1],
case_(label2)[expr2],
case_(label3)[expr3]
.default_[expr4]
]
or
switch_(condition)
[
case_(label1)[expr1],
case_(label2)[expr2],
case_(label3)[expr3],
default_(expr4)
]
could be made to work.
The nice thing about having .default is that it could end the sequence of case_()[]'s by generating a unique expression template which would not allow either a operator,(expression) or operator,(case_expression).
what you also want to avoid is allowing:
switch_(condition)
[
case_(label1)[expr1],
expr1a,
case_(label2)[expr2],
case_(label3)[expr3]
.default_[expr4]
]
or
switch_(condition)
[
case_(label1),
expr1,
case_(label2)[expr2],
case_(label3)[expr3]
.default_[expr4]
]
or
switch_(condition)
[
case_(label1),
expr1,
case_(label2)[expr2]
.default_[expr4],
case_(label3)[expr3]
]
where a useless expression is inserted into the middle of the case statements.
BTW, Jaakko and I did most of this work a while ago, playing around, but if Phoenix-2 the merger of LL and Phoenix is due out, there is no point in pushing updates to LL.
-Gary-