[stringtemplate-interest] outputting current template file and line number?

[Terence Parr]

Can you override STG and change the functionality?
Ter

On Jul 22, 2009, at 9:12 PM, Barrie Treloar wrote:

> On Thu, Jul 23, 2009 at 11:09 AM, Terence Parr<parrt at cs.usfca.edu>  
> wrote:
>>  take a look at the emit start stop tag thing. Is very useful for  
>> figuring
>> out where some  output came from.
>
> Ahh http://www.stringtemplate.org/api/org/antlr/stringtemplate/StringTemplateGroup.html#emitDebugStartStopStrings(boolean)
> thanks.
>
> But how do you set what the debug start/stop strings should be?
> ... looking at the code, I can't.
>
> StringTemplateGroup.emitTemplateStartDebugString() -  Line 1031
> 			out.write("<"+groupPrefix +st.getName()+">");
>
> This is probably another edge case for me.
>
> The generated template is used in another engine and will print out
> the rules that it matches, including any comments on that rule.
> So I really want the Template:LineNumber as part of that comment so I
> can see which rule fired.
>
> I dont think I want the file:line to be output for every template that
> gets invoked... that's probably going to clutter the output and I'd
> need the emitter to have a configurable start/end debug string.
>
> Maybe I could push the current template as an attribute so I could do
> <template.name>, <template.line> but I would need to expose the
> current chunk to pull out the AST since that is what has the line
> information.
> These all sound like crazy thoughts. Back to the manual way.
>
> Thanks.