[antlr-interest] Using ANTLRv3

[Stefan]

Hello!

I've been trying to use ANTLRv3, but it seems that I'm missing something.

I want to write a simple rule to match strings:

grammar Test;

string	:	'"' (~'"')+ '"';

D:\ANTLR\pliki>java org.antlr.Tool Test2.g
no such locale file org/antlr/tool/templates/messages/languages/pl.stg 
retrying
with English locale
ANTLR Parser Generator  Version 3.0b7 (April 12, 2007)  1989-2007
error(139): Test2.g:3:16: set complement ~'"' is empty
warning(201): Test2.g:3:19: The following alternatives are unreachable: 1

What's wrong? I guess that I only mention the '"' character, so the 
complement is empty. How do I specify the character set?


I'm writing my grammar from a specification, so I'd like to make it look 
as it's stated there, but trying to write a rule for an indentifier 
gives lots of errors:

grammar Test3;

identifier
	:	nondigit (nondigit | digit)*;

nondigit:	('a'..'z') | ('A'..'Z') | '_';
digit	:	('0'..'9');


D:\ANTLR\pliki>java org.antlr.Tool Test3.g
no such locale file org/antlr/tool/templates/messages/languages/pl.stg 
retrying
with English locale
ANTLR Parser Generator  Version 3.0b7 (April 12, 2007)  1989-2007
warning(200): Test3.g:4:30: Decision can match input such as "EOF" using 
multipl
e alternatives: 1, 2, 3
As a result, alternative(s) 2,3 were disabled for that input
warning(200): Test3.g:4:30: Decision can match input such as "'_'" using 
multipl
e alternatives: 1, 2
As a result, alternative(s) 2 were disabled for that input
warning(201): Test3.g:4:30: The following alternatives are unreachable: 2,3

warning(200): Test3.g:6:11: Decision can match input such as "'_'" using 
multipl
e alternatives: 1, 2, 3
As a result, alternative(s) 2,3 were disabled for that input
warning(200): Test3.g:6:11: Decision can match input such as "EOF" using 
multipl
e alternatives: 1, 2
As a result, alternative(s) 2 were disabled for that input
warning(201): Test3.g:6:11: The following alternatives are unreachable: 2,3

If I "inline" it like this:

identifier
	: ('a'..'z' | 'A'..'Z' | '_') (('a'..'z' | 'A'..'Z' | '_') | '0'..'9')*;	

Everything is OK. Why?


Is there going to be a complete and free documentation for ANTLRv3?


Stefan Chrobot