JavaCC line number in exception

Question

i use JavaCC for parsing my script... I have something like this in my *.jj

private Type parseType() throws MyScriptException:
{
    Token token;
}
{   (   token = <INT>
    |   token = <FLOAT>
    |   token = <BOOL>
    |   token = <STRING>
   )
    { return types.get(token.image); }
}

in types.get I throw an exception from type MyScriptException when anything goes wrong. But I need in the output from which line the error was caused. Can I integrate the line from error in MyScriptException?

Answer 1

The Token class has attributes that give the location of the token:

  /** The line number of the first character of this Token. */
  public int beginLine;
  /** The column number of the first character of this Token. */
  public int beginColumn;
  /** The line number of the last character of this Token. */
  public int endLine;
  /** The column number of the last character of this Token. */
  public int endColumn;