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Marcin Grzegorczyk wrote:

> As a matter of nitpick, it doesn't have to be an interpreted language.
> D is an example of a compiled language which allows this sort of
> 'de-tokenization' of string constants, as well as compile-time string
> operations like concatenation and substringing.
>
> But, of course, none of that is available in standard C.

While we are in the process of picking nits, I believe that, in this
context, Seebs' reference to "compile time" was made regarding the
preprocessing stage. Considering this, it is not possible to look at the
contents of a variable which is defined through a grammar which your
parser (in this case the C preprocessor) either doesn't recognize as such
or simply ignores.

To put it in other words, in CPP terms a variable declaration/definition
in C is not a variable declaration at all. It is simply noise which
should be ignored. As a consequence, it doesn't exist and therefore it's
contents cannot be accessed.


Rui Maciel

On 01/29/2011 12:59 PM, Marcin Grzegorczyk wrote:
> Seebs wrote:
....
>> On some systems there's ways to look up symbols that were already defined
>> by names, but there's no way to do this at compile time. Try an
>> intepreted language.
>
> As a matter of nitpick, it doesn't have to be an interpreted language. D
> is an example of a compiled language which allows this sort of
> 'de-tokenization' of string constants, as well as compile-time string
> operations like concatenation and substringing.

The OP's example was not trying to detokenize a string constant, it was
trying to make use of a variable declared as a pointer to char.

--
James Kuyper

James Kuyper wrote:
> The OP's example was not trying to detokenize a string constant, it was
> trying to make use of a variable declared as a pointer to char.

Yes, but the OP also talked about “"anti" string”, presumably meaning a
"destringization" operator ("de-tokenization" was a wrong word to use on
my part, sorry about that). And his second example did not involve any
variables.
--
Marcin Grzegorczyk