[stringtemplate-interest] Newbie Help

[Terence Parr]

On Aug 11, 2007, at 5:49 PM, Richard Wilburn wrote:

> Hi I am new to StringTemplate :)
>
> I am trying to use StringTemplate to generate source code. I  
> realise that in order to use string template I need to think in a  
> way similar to functional programming however its been along time  
> since I have done any so I struggling a bit. I am trying to  
> generate c# code. In particular a case statement.
>
> Here is the code that is in template.st
>
> switch(eventlist)
> {
>     $events:{event|
>         case $event$:
>         $rulelist:{rule|
>             $if(event == rule))$

ST won't let you do any attribute evaluations in the template.  Pass  
in as field or method of event.  then do $if(event.isInECA1xpathquery) 
$...$endif$.

> What the output is trying to do is to take an event that occurs (we  
> don't know what it is until runtime) and try to work out (think c++  
> style event loop/message pump)  what it is with the case statement.  
> Then I have a list of ECA rules (event condition action rules that  
> I want to put in based on what their event. So event1 could be  
> mouseclicked and event2 could be keypress. ECA rules 1,2,3,10 could  
> apply to event1 and ECA rule 4 could apply to event 2. So what i  
> need to do is a comparison to get the ECA rules in the correct case  
> statement. If I haven't explained anything enough let me know.  
> Ultimately I am after some sort of string value comparison operator.
Yep, must do that computation in model though :)

Ter