[antlr-interest] Problem with this antlr grammar.

[doctlo-antlr at yahoo.com]

On Mon, 28 Feb 2005 23:38:20 -0800, you wrote:

>DIGIT, UPPER, LOWER, OPENB, and CLOSEB need to be "protected" so that they
>can be used inside other lexer rules.  What your grammar encounters is OPENP
>SEMI UPPER.
>
>--Loring
>
Thanks. I have one more question.
If I use this as input:
 (;GM[1-1])

I get the error message:
exception: line 1:7: expecting ']', found '-'

which if I interpret correctly means that - is not part of  ~']'.
Basically I want to include any character that is not a ], but am
unsure how.

>> -----Original Message-----
>> From: antlr-interest-bounces at antlr.org [mailto:antlr-interest-
>> bounces at antlr.org] On Behalf Of doctlo-antlr at yahoo.com
>> Sent: Monday, February 28, 2005 11:24 PM
>> To: ANTLR Interest
>> Subject: [antlr-interest] Problem with this antlr grammar.
>> 
>> header {
>> }
>> 
>> class MyLexer extends Lexer;
>> options
>> {
>>     k=3;
>> }
>> WS       : ('\n' | '\r')
>>               { _ttype = Token.SKIP; };
>> DIGIT        : '0'..'9';
>> UPPER        : 'A'..'Z';
>> LOWER        : 'a'..'z';
>> //NUMBER       : ('+'|'-')(DIGIT)+;
>> //REAL         : NUMBER '.' (DIGIT)*;
>> OPENP        : '(';
>> CLOSEP       : ')';
>> SEMI         : ';';
>> OPENB        : '[';
>> CLOSEB       : ']';
>> COLON        : ':';
>> PERIOD       : '.';
>> ESC          : '\\' ']';
>> PROP_VALUE   : OPENB ( ESC | ~']')*   CLOSEB;
>> PROP_IDENT   : UPPER (UPPER|DIGIT)?;
>> 
>> class MyParser extends Parser;
>> options
>> {
>>    k=3;
>> }
>> collection   : (game_tree)+;
>> game_tree    : OPENP sequence (game_tree)* CLOSEP;
>> sequence     : (node)+ ;
>> node         : SEMI (property)*;
>> property     : PROP_IDENT  PROP_VALUE;
>> 
>> 
>> For some reason when I feed it the following:
>> 
>> (;GM[1])
>> 
>> line 1:3: expecting CLOSEP but found 'G'.
>> 
>> I have no idea why.
>> Can someone help?
>> 
>> Thanks
>> T.L.Olczyk
>> 2.7.4