[antlr-interest] Parsing numeric and alphanumeric

[Vishal Soni]

Hi,

I need to parse numeric and alphanumeric tokens in ANTLR. The tokens can be
Numbers or Alphanumeric that start with numbers


For e.g.

1111 ===> is a number
1AABC_ ===> is a Alphanumeric token
A_112===>is alphanumeric
_11111 => is alphanumeric


How would I define a grammar for something like this?

-- 
Thanks,
Vishal
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