[antlr-interest] Please advice about float

[Gevik babakhani]

Dear all,

 

I would like to parse integers and simple floats without exponents. Is this
the correct grammar?

 

class MyLexer extends Lexer;

options {

            k=2;

}

                                                                        

NUMBER          :           INT ((FLOAT)?)

                        ;

protected

FLOAT              : ('.' INT)

                        ;

protected

INT                   :           (DIGIT)+

                        ;

 


protected                                               

DIGIT                :           '0'..'9'

                        ;

 

WS     :

    (' ' 

    | '\t' 

    | '\r' '\n' { newline(); } 

    | '\n'      { newline(); }

    ) 

    { $setType(Token.SKIP); } 

  ;

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