[stringtemplate-interest] ST4: Early evaluation of default arguments

[Terence Parr]

perhaps {<({...})>} works? ;)
Ter
On Apr 30, 2011, at 3:39 AM, Udo Borkowski wrote:

> Currently the only way to enforce early evaluation of template default arguments is through the syntax:
> 
>      p = {<(...)>}
> 
> I.e. one can only early evaluate anonymous template that contain just an expression tag.
> 
> 
> It would be nice to also support early evaluation on any kind of anonymous template.
> 
> E.g. in http://www.antlr.org/pipermail/stringtemplate-interest/2009-August/002097.html Ter gave the following example:
> if(cond, block, label={end<(uniq)>}) ::= << ... >>
> 
> However this will not give the expected result in ST4 (early evaluation of "end<(uniq)>").
> 
> Maybe we could extend the syntax for default arguments to also support
>       p = ({ ... })
> 
> i.e. putting "( … )" around the template forces early evaluation?
> 
> 
> What do others think?
> 
> Udo
> 
> 
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