[antlr-interest] Flagging better errors

[chintan rao]

Hi,
The code genrated by antlr currently gives errors like
line 0:1 : expected token WS found WHATEVER
or some thing similar

suppose antlr grammar allows one to describe what WS tokes is
would it not be better
 it is better to get warnings like

line 0:1:expected whitespace found whatever

can't the grammar have a facility to provide the decription of the token
some thing like
WS
description
{
      return "whitespace";
}
:
('  '|'\t') ;

now while flaggng errors WS would be replaced by description :)

I dont whether antlr has this already


cheers,
Chintan