[EMAIL PROTECTED] wrote:
>
> On 05 Aug 2001 13:34:02 +0200, Dominik Vogt wrote:
> >
> > How about this enhancement to conditional commands:
> >
> > Next (conditions) { false-action } true-action
> >
> This may work, but is this the best possible solution? This syntax is not
> very readable and having else-command before then-command does not make it
> better. As before there is still a limit to one command in both branches,
> so you are forced to create small functions without a real need. It also
> adds a problem of escaping curly brackets in else-command when needed.
> What about parsing of nested conditional commands, braces in braces? :)
> It seems that an idea of 2 commands on the same line is not very good.
I think we can already do conditional code using self modifying
functions:
AddtoFunc true_case
+ I true case commands
+ ...
AddToFunc false_case
+ I false case commands
+ ...
AddToFunc its_true
+ I DestroyFunc conditional_code
+ I AddToFunc conditional_code I true_case
AddToFunc its_false
+ I DestroyFunc conditional_code
+ I AddToFunc conditional_code I false_case
AddToFunc test
+ I its_true
+ I Next (whatever) its_false
+ I conditional_code
I know it's a bit wordy but it's probably possible to use FvwmM4 to wrap
it up into something a bit easier to type.
>
> Here is my revised proposal that solves all problems described above.
long example snipped...
> There are 5 new commands "if", "else", "elsif", "{" and "}" in this
> proposal. No existing command syntax is changed, which is an advantage.
But then you'll end up doing a "while" command, then a "switch", then a
"break" and I think you've got youself a new language to learn. I think
the SCWM approach is better if this is what you want i.e. put a real
interpreter in there (I'd prefer TCL since I already know it) so that
people don't have to learn a new language and we don't have to design
and test it.
Cheers,
Tim.
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