[antlr-interest] newbie: how to use parse rule and nested curly

[Ramon V. del Rosario]

Hi, am trying to parse bind config file but is
struggling to understand how antlr parse rule work.
right now i'm just using antlr to tokenise the
file....
using a counter to parse nested { {}; }; sort of
structure but has been reading the ref manual and it 
seen the parse rule should be able to parse such a
thing easily. but can't find much notes on how to
create
the parser except the calculator.

can we create a our own object when a parse rule is
confirm? eg when acl block is found then i can

ACL a = new ACL($getText());
while ($hasNext()
	a.addElement($getText());

thanks for reading

----- sample bind config ------
acl xyz-slaves {
160.9.201.3;
};

options {
directory "/etc";
allow-transfer { xyz-slaves; localhost; };
};

--------- t.g ------------
class P extends Parser;

// how do we use the parse rule ???
document : (acl | WORDSTRING) + EOF;

acl : ACL named_block ;
opt : OPT named_block ;

named_block : WORDSTRING LPAREN (named_block |
WORDSTRING)* RPAREN SEMICOLON ;
	
class L extends Lexer;

options {
caseSensitive=false;
caseSensitiveLiterals=false;
k=7;
}

LPAREN : '{' ;

RPAREN : '}' ;

SEMICOLON : ';' ;

ACL : "acl";

OPT : "options";

WORDSTRING : (WORD | STRING)+ ;
						
protected	
STRING : '"'! (~'"')+ '"'! 	
		| '\''! (~'\'')+ '\''! ;
		
protected
WORD : ( ALPHA | INT | SYM )+ ;

protected
ALPHA : ('a'..'z')+ ;

protected
INT : ('0'..'9')+;

protected
SYM : ('.' | '!' | '=' | '_' | '/')+;

WS	:	(	' '
		|	'\t'
		|	'\r' '\n' { newline(); }
		|	'\n' { newline(); }
		)
		{$setType(Token.SKIP);}	
	;


		
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