[antlr-interest] How to make this work ??

[v_vivekg <v_vivekg at yahoo.com>]

Hi all,

I have binary and hex digits defined as follows :

protected
BDIG		: ('0'|'1') ;
protected
HDIG		:	(options {warnWhenFollowAmbig = false;} :('0'..'9') )
			|	('A'..'F')
			|	('a'..'f')
			;

and Binary String and Hex String defined as follows in the lexer

B_STRING : "'"   (BDIG)+  "'B"  ;
H_STRING : "'"   (HDIG)+  "'H"  ;

Now the problem is that this definition is not able to
parse the string of type '01010111'H . The code goes into
binary string parsing and gives error that 'B was expected
but 'H was found instead.
I tried with semantic and syntatic predicates with lot of
options but unable to make this work.

Kindly help on how this simple thing can be made to work.










 

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