[antlr-interest] simple annotation parser

[Ben Corne]

Hello

I'm trying to parse the examplary lines:
example1: "//@author Ben Corne"
example2: "//@ this is an example docstring"

However, when running this in the interpreter window on example 1 or 2, it
always seems to cut off the last last part of the letters in the resulting
tree:
http://igor.rave.org/annotation.png

here's my attempt so far:
-------------------------------
grammar Annotation;

options {
  language  = Java;
  output    = AST;
}

@header{
  package edu.vub.at.parser;
}
@lexer::header{
  package edu.vub.at.parser;
}

annotation
  : '//@'  rule
  ;

rule
  : ('\t'|'\n'|' '|'\r')* author
  | docstring
  ;

// Documentation rules
author
  : 'author'!
    (( '\t' | ' ' )+)!
    .*
    EOF
  ;

docstring
  : (( '\t' | ' ')+)!
    .*
    EOF
  ;
-------------------------------