[ragel-users] access prefix

Adrian Thurston adrian.thurston at esentire.com
Tue Apr 26 15:05:40 UTC 2011


Ya that's a perfectly reasonable way to do it. I'd like to design ragel 
for the most common case. I *think* making pe, pe and eof local is more 
common, but I could be wrong.

-Adrian

On 11-04-25 09:02 PM, Brian Maher wrote:
> If it makes a difference, I actually keep p, pe, and eof in my
> "struct" for managing ragel state, so if %access defined a prefix for
> *all* state variables, then it would be a welcome change from my
> perspective.
>
> Although Adrian is right about p, pe, and eof being rather
> "transient", I find it easier to write functions that take a single
> "struct" argument that manages the ragel state.  This way I can write
> a function called state_machine that encapsulates all my actions for
> the state machine, but ends up delegating each action to a function
> that takes the "struct" as an argument.  I just find this way of
> writing code is easier for me and my editor to digest.
>
> Cheers,
> -Brian
>
> On Mon, Apr 25, 2011 at 9:06 AM, Adrian Thurston<thurston at complang.org>  wrote:
>> Hi,
>>
>> The p, pe, and eof variables are not modified because they do not need to be
>> maintained across partial executions of state machines. They are normally
>> declared as local variables in the function that contains the write exec.
>>
>> The cs variable should be modified. If you are finding it isn't for some
>> language, then that would definitely be a bug.
>>
>> -Adrian
>>
>> On 11-04-25 12:37 AM, ygrek wrote:
>>>
>>> Hello,
>>>
>>>   Is there any reason why %access defines prefix for all state variables
>>> except some (p,pe,cs,eof)?
>>>   I think it would be useful to specify prefix for all state variables (and
>>> then override some variables if
>>>   needed with individual %variable declarations).
>>>
>>
>> --
>> Dr. Adrian D. Thurston
>> http://www.complang.org/thurston/
>>
>> _______________________________________________
>> ragel-users mailing list
>> ragel-users at complang.org
>> http://www.complang.org/mailman/listinfo/ragel-users
>>
>
>
>

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