[SR-Dev] script parsing: string switch support

[Andrei Pelinescu-Onciul]

On Feb 20, 2009 at 11:15, Daniel-Constantin Mierla <miconda at gmail.com> wrote:
> Hello Andrei,
> 
> On 02/20/2009 12:50 AM, Andrei Pelinescu-Onciul wrote:
> >[...]
> >
> >script parsing: string switch support
> >  
> that's great, thanks. From the next example, to understand the the case 
> can take expression that evaluates to static strings or integers?

Yes.
There are the following restriction:

- case labels must be static (no vars allowed)
- in the same switch you can have only one type of case labels: strings
  or integers (1)
- the first case label sets the required type for all the others
 (so if your first case label is a string => all the other must be
 strings, if it's an integer all the other must be integers).

(1) - could be changed in some cases (e.g. string case with some int
label allowed, which could be automatically converted to string), but I
 think it would too confusing and I disallowed it (in general having
 mixed types in a switch() are 99% an error).

I still think that using a different switch() name for strings will be
less confusing (e.g. switch() for integers and match() for strings).

Any opinion on how to differentiate regular expressions from strings?
Right now a '/' in front means a regular expression (but there's no way
to specify case insensitive match for example).

> 
> Now, with while and switch in there I can work to get most of my configs 
> working with sip-router.

Warning: the while works only with integers :-)


Andrei