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--------------------
FROM: ib_icf at yahoo.com.cn 
DATE: Tue, 14 Sep 2004 10:17:45 -0000 
SUBJECT: pls look at my parser, who can help me to kill this nest problem! 

I found this toy very interesting, but meet some problems, 
here is the definition of my parser: 

class ExprParser extends Parser; stat : expr | ifStat ; 
ifStat : IF ifPart END IF ; ifPart : expr THEN stat ( ELSE 
stat )? ; expr : andExpr (AND andExpr |OR andExpr )* ; 
andExpr : numExpr (EQUAL numExpr |GREAT numExpr |LESS 
numExpr |GRTEQ numExpr |LESEQ numExpr )? | LPAREN expr 
RPAREN ; numExpr : mexpr ( PLUS mexpr | MINUS mexpr )* ; 
mexpr : atom ( STAR atom | DIV atom )* ; atom : i:NUM | 
--------------------

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From: "ib_icf" <ib_icf at yahoo.com.cn>
Subject: pls look at my parser, who can help me to kill this nest problem!
Date: Tue, 14 Sep 2004 10:17:45 -0000
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