[antlr-interest] grammar notation (every char except...)

[bace.spam at gmx.net]

Hi all,

I am totally new to antlr, but I have some practice with other parser gernerators. I want to recognize something like 

"// comment/goes^&on //" and
"## comment/goes^&on ##"

So I want to allow everything inside, except the "//" and except the "##". It is a principle to let the tokens as much as atomic as possible, isn't it. I think 

TOKEN_COMMENT : "//" .* "//";

is not recommended. Better should be

TOKEN_SLASH : '/';

I could also imagine to define

TOKEN_TAG : "//";

instead of TOKEN_SLASH.


How can I specify the content (all chars allowed, except "//") in the grammar with antlr (I use 2.7.7)?

comment
  :  TOKEN_TAG ~("//" | "##")* TOKEN_TAG
  ;

and a lot of other further notations like ( . | ~"//" | ~"##" )* are not accepted. Has anyone an idea to get this problem solved?

Thank you very much and looking forward to your reply,
Markus
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