[antlr-interest] intro..& questions

[Robert Hill]

Hi all, been lurking for a while, so I thought I'd introduce myself before
asking lots of stupid questions.. :)

Im Rob, Programmer, 20yrs experience, mainly games, but now moved to <ahem>
sensible software (where the companies don't seem to go bankrupt at the rate
of 1 a week...)
I originally used PCCTS a long time ago, and had a problem that I thought I
could solve with it, and hence, I ended up here with antlr instead! :)

I have to say, a stunningly useful bit of software Terrence, Nice one.

Environment : WinXP, antlr 2.7.5, Devstudio, and C#

So on with the daft questions, they're just usage questions really - I'll
probably have more questions as the app I'm writing becomes less trivial :)
hehe

Ok, heres the first one 

Q1. How do I get the current line number in a parser rule? 
	Im in the middle of the rule, checking the semantics and if there's
a 	problem I want to throw an exception with a new error format that's
DevStudio friendly ie 
	
	"Filename.v(25) : error blah blah blah" type of thing.

	I can see there's a line number variable in the lexers inputState,
but how do you get at it from the Parser? I know I could make them into
singletons (there will only ever be one of each anyway) and get at the lexer
that way but it just seems .. well, wrong. I cant see any other way at
getting at the lexers inputstate to fetch the line the current token was
found on..

Q2:
	Im using the string template to output the transformed source, and
im getting spurious newlines after braces ie...

structDecl(name,variables) ::=<<
struct $name${
	$variables:{$it.decl:(it.format)()$}$
}; 
>>
Outputs

Struct aName
{

Line;
Line;
}

Where is the first newline coming from after the brace? It doesn't seem to
make any difference where I place the $variables$ stuff, I always get a
newline after the brace. Its just a formatting problem, but I thought that's
what the stringtemplate was for.. to help me format stuff how I want ;)

Any help much appreciated! 
(and I bet you thought they were going to be difficult questions hehe)

Thanks.


Ps how do I get hold of Antlr V3? Sounds like a monster!