[antlr-interest] java.g NUM_INT
Ray Waldin
ray at waldin.net
Tue Sep 23 15:44:58 PDT 2003
Hi everyone,
I'm new to this group, so apologies if this issue has been raised
before. I wasn't able to find any reference to it. In java.g (Version
1.20) it seems that the NUM_INT rule is broken for cases of floats and
doubles which have leading zeros and contain the digits 8 or 9 in the
decimal integer or mantissa part.
While the following cases work (by sheer luck, I believe):
> 07.0f
> 06d
> 07e0
these do not:
> 08.0f
> 09d
> 08e0
A quick fix can be found below.
-Ray
--- old/java.g 2003-09-23 15:20:05.000000000 -0700
+++ java.g 2003-09-23 15:21:28.000000000 -0700
@@ -1234,6 +1234,7 @@
}
: HEX_DIGIT
)+
+ | (('0'..'9')+
('.'|EXPONENT|FLOAT_SUFFIX|)) => ('0'..'9')+ // float or double with
leading zero
|
('0'..'7')+
// octal
)?
| ('1'..'9') ('0'..'9')*
{isDecimal=true;} // non-zero decimal
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