’ ;
As well as succinctly express notions such as “any byte” — without listing
every possible 8-bit value and having to check against them to accept a byte.
> On Apr 1, 2021, at 11:05, John P. Hartmann wrote:
>
> Write your own scanner in C.
>
> On 4/1/21 16:28, Stephen Taylor via
lex return each character as a token? Can
>>> you special-case 0 to not have the token value 0? That is, flex does this:
>>>
>>> \x00 { return ZERO; }
>>>
>>> And then in your grammar:
>>>
>>> %token ZERO
>>>
>>> an
n a phone..not 100% sure the syntax is right.)
>
> -Chris
>
>
>> On Mar 30, 2021, at 12:37 PM, Stephen Taylor via Users list for the GNU
>> Bison parser generator wrote:
>>
>> I am trying to parse binary files and obviously need to write rules that
>>
I am trying to parse binary files and obviously need to write rules that
include the 8-bit value 0x00 — flex appears to allow me to obtain an 8-bit
scanner using the -8 option. I seem to be able to use ‘\x01’ to ‘\xFF’ for
individual terminal symbols in Bison rules. Unfortunately, ‘\x00’ is used
