Re: [gobo-eiffel-develop] Parsing parameters using the arguments library

[Bernd S. <ber...@in...>]

On Sun, 11 Mar 2007 19:52:41 +0100, Colin Adams  
<col...@ho...> wrote:

>> From reading the documentation, it seems that the parser can not check  
>> the
> number of parameters passed.
>
> It seems to me that it would be convenient to be able to set the minimum  
> and
> maximum number of parameters expected, which would then reduce the  
> checking
> the application had to do.
>
> As the number expected might differ according to the option set, then  
> this
> should be settable at the option list level (as well as on the parser,  
> if it
> is the same for all (or most) option sets).
>
> What do you think?

I had already experimented with such a features, but had not full decided  
for a satisfactory design. Currently I only differenciate between  
mandatory or not mandatory.

Giving the maximum number of occurencies seems very reasonable. With  
minimum: It seems very rare that an option is required 'at least 3 times'.  
But I might be wrong here. I will probably extend the mandatory mechanism  
to cover such cases.

Bernd