[stringtemplate-interest] File based templates and maps.

[Terence Parr]

On Oct 19, 2006, at 10:08 AM, Caleb Lyness wrote:

> Hi,
>
> Thank you for the quick response. I managed to do what I wanted  
> (using a group file).
>
> Here is another interesting thing I have been playing with:
>
>    $(headerTemplate)(); null=headers/default()$
>
> It includes a default header template if the attribute has not been  
> set.

heh, cool :)

> My first try was this:
> $(headerTemplate; null="headers/default")()$
> This does not work? should it though? cf: <(expr)(argument-list)>

Hmm....interesting.  Seems like it should.

> I think it would be nice for future newbies if there was an example  
> along side the file based
> template (.st) method in the source. Would speed the learning curve  
> up a bit.
> cf: src\org\antlr\stringtemplate\test.

Add a quick tutorial :)

http://www.antlr.org/wiki/display/ST/Tutorials

Ter
>
> Here is quick .stg example:
>
> te.stg:
> group groupName;
>
> typeInitMap ::= [
>    "Integer":"0",
>     "long":"1",
>     default:"null"
> ]
>
> variable(type,name) ::= <<
>    <b>$type$</b> $name$ = $typeInitMap.(type)$;$\n$
> >>
>
> t.java:
> import java.io.File;
> import java.io.FileReader;
>
> import org.antlr.stringtemplate.StringTemplate;
> import org.antlr.stringtemplate.StringTemplateGroup;
> import org.antlr.stringtemplate.language.DefaultTemplateLexer;
>
> public class t {
>     /* Quick and very nasty example: */
>     public static void main(String[] args)
>     throws Exception
>     {
>         File templateFileName = new File("te.stg");
>         StringTemplateGroup group = new StringTemplateGroup(
>                 new FileReader(templateFileName),
>                 DefaultTemplateLexer.class //Leave away if you want  
> to use angle brace notation
>             );
>
>         StringTemplate template = group.getInstanceOf("variable");
>         template.setAttribute("type", "Integer");
>         template.setAttribute("name", "id");
>         System.out.println(template.toString());
>     }
> }
>
>
>
>
>
>
>
>>> Hi, I have been trying to use a map for file based templates. So  
>>> far no luck. Is this actually possible or have I missed the  
>>> point. I have tried too many combination to list them here, so I  
>>> just list the last thing I tried: hash map defined in reason.st:  
>>> --- $[ "1":"reason for 1", "2":"reason for 2", "D":"reason for  
>>> D", default : "unknown reason" ]$ --- Now this would make some  
>>> sense, no?
>> Hi, sorry. Those maps only work in group file formats (.stg  
>> files). Terence
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