[antlr-interest] String Template Questions
Terence Parr
parrt at cs.usfca.edu
Fri Jun 6 13:24:49 PDT 2008
On Jun 6, 2008, at 1:20 PM, David Beckedorff wrote:
>
> Q1.
>
> I have a template hierarchy going, so
>
> group WebAppSiLayer : FeatureBase ;
>
>
> Now in my Java program, I have:
>
> StringTemplateGroup featureBaseSTG =
> StringTemplateGroup.loadGroup("FeatureBase");
> featureBaseSTG.registerRenderer(Object.class, new
> StFormatRenderer());
>
> …
>
> StringTemplateGroup siLayerSTG =
> StringTemplateGroup.loadGroup("WebAppSiLayer", featureBaseSTG);
> siLayerSTG.registerRenderer(Object.class, new StFormatRenderer());
>
>
> So the question is whether the second registration of my
> StFormatRenderer class (implements AttributeRenderer) is actually
> necessary, since it has already been registered with the super-
> template?
Well,You'll have to try it, but I believe I look upwards in the
hierarchy if I do not see a renderer register.
>
> Q2.
>
> In ANTLR's Java.stg file, there are, I guess, template
> interpolations like <@imports>, <@end>, <@members>, <@preamble>,
> etc. What's the purpose of the '@' characters? What's going on here?
>
That is a template region. Look at that keyword in a search of the doc.
Ter
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