[antlr-interest] Strategy for generating text pattern for a decrementing value

[Felix Dorner]

Simon Woods wrote:
> Hi
>
> I am translating a language into a new form, so I have a grammar, tree 
> walker and several templates.
>
> In the original language, there may be an occurance of a particular 
> expression which contains a number, N. If this expression occurs, 
> based on the value this number, I want to generate a text pattern 
> something like
>
> "mytextpattern-(N) OR mytextpattern-(N-1) OR mytextpattern-(N-2) OR 
> mytextpattern-(N-3) ..." until N = 0
Today I had my first amazing StringTemplate experience. I am amazed, 
although I don't know if thats the way to go, I find this really freaky

myNrule: NUMBER {

StringTemplate s = new StringTemplate("mytextpattern-($number; separator 
= )OR$)");
int i = Integer.parseInt($Number.text);
    for (; i >= 0; i--){
        s.setAttribute("number", new Integer(i)) // need to pass an object
    }
}

There may be syntax errors, I really dont get along with all those rule 
attributes.