[antlr-interest] java.g NUM_INT

[Terence Parr]

Fixed in main line.

Ter


On Wednesday, September 24, 2003, at 02:17 PM, Ray Waldin wrote:

> Yes.  There appears to be an extraneous '|' following 'FLOAT_SUFFIX' 
> in the predicate causing it to return true in all cases.  The 
> corrected patch is:
>
> --- old/java.g  2003-09-23 15:20:05.000000000 -0700
> +++ java.g      2003-09-24 14:10:18.000000000 -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
>
> Sorry for any confusion this may have caused.
>
> -Ray
>
> Ernest Pasour wrote:
>
> When I tried sticking this fix in, it allowed a number like 083 to 
> pass through as an Integer.  I'm not sure exactly why no error is 
> thrown though.  Do you see that behavior?
>
> -----Original Message-----
> From: Ray Waldin [mailto:ray at waldin.net]
> Sent: Tuesday, September 23, 2003 7:38 PM
> To: antlr-interest at yahoogroups.com
> Subject: [antlr-interest] java.g NUM_INT
>
>
> I sent this earlier and it never showed up on the list, so here it is
> again...
>
>
> 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 the archives.  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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