[antlr-interest] A basic question!
ali azimi
aliaazimi at yahoo.com
Wed Jun 20 12:16:36 PDT 2007
Hello,
I know this question is very basic for all of you. But I really appreciate if you tell me what is it that I do wrong.
I get an error message when I try to generate Lexer and Parser from a grammar which includes the following:
prog: stat+ ;
stat: expr NEWLINE {System.out.println($expr.value);}
| ID '=' expr NEWLINE{memory.put($ID.text, new Integer($expr.value));}
| NEWLINE
;
The error message is as follows:
Check Grammer failed:
(116): C:\Documents and
|Expr.g:11:20: unknown attribute for rule expr: value
Consult the console for more information.
(116): C:\Documents and
|Expr.g:12:20: unknown attribute for rule expr: value
Consult the console for more information.
Thank you in advance for any advice.
Al
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