[antlr-interest] Calling scala methods from ANTLR grammar - lots of warnings!

[Terence Parr]

try \$eq :)
Ter
On Sep 11, 2009, at 11:12 AM, Alex Eagle wrote:

> Hi Terrance and others,
>
> I'm using ANTLR3, and in my tree grammar I'm assembling an object
> model in Scala. When I add elements to a
> scala.collection.mutable.Buffer, there's a method in scala "+=" which
> is emitted into java bytecode as "$plus$eq".
>
> So my grammar has chunks like this:
> importDeclaration
> 	: ^('import' name=qualifiedType)
> 	{ $SourceFile::file.imports().$plus$eq($name.text); }
> 	;
>
> The problem is that antlr gets upset about the "$plus" and "$eq" and
> prints errors:
> error(114): /Users/alexeagle/IdeaProjects/noop/src/main/antlr/ 
> NoopAST.g:72:2:
> attribute is not a token, parameter, or return value: eq
> error(114): /Users/alexeagle/IdeaProjects/noop/src/main/antlr/ 
> NoopAST.g:77:2:
> attribute is not a token, parameter, or return value: plus
>
> But, the grammar is still generated and works fine. So it's just  
> annoying.
>
> I've tried to find a way to escape those dollar signs, but no luck.  
> Any ideas?
>
> Thanks!
> -Alex
>
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