ANN: Stackless Python 0.2

[Neel Krishnaswami]

In article <376636EA.84240129 at appliedbiometrics.com>,
Christian Tismer  <tismer at appliedbiometrics.com> wrote:
>
>
>Neel Krishnaswami wrote:
>
>[Stackless Python 0.2]
>
>> This is very neat, and you are completely deranged. I know just
>> enough to know that I should cheer you on, mind, but I'll try to
>> cheer loudly. Feel free to make an announce when you add coroutine
>> support. Please? :)
>
>Thanks :-)
>
>Sure I will. I'd like to know wether my binary works ok for you.
>You might also try a recursive function, it should raise an
>exception after 29999 recursions (just to have *a* limit).

Unfortunately, I couldn't get it to build (I'm on a Linux machine).
I tried copying the files from the stackless distribution into the
appropriate places in the Python source distribution, but I get 
the following error:

$ gcc -g -O2 -I./../Include -I.. -DHAVE_CONFIG_H   -c myreadline.c -o myreadline.o
In file included from ../Include/Python.h:38,
                 from myreadline.c:42:
../Include/patchlevel.h:69: parse error before `5'
../Include/patchlevel.h:69: stray '\' in program
../Include/patchlevel.h:70: stray '\' in program
../Include/patchlevel.h:71: stray '\' in program

[plus more cascading errors as a result of this]

Apparently gcc is not liking this:

/* Version as a single 4-byte hex number, e.g. 0x010502B2 == 1.5.2b2.
   Use this for numeric comparisons, e.g. #if PY_VERSION_HEX >= ... */
#define PY_VERSION_HEX ((PY_MAJOR_VERSION << 24) | \   
			(PY_MINOR_VERSION << 16) | \   
			(PY_MICRO_VERSION <<  8) | \
			(PY_RELEASE_LEVEL <<  4) | \
			(PY_RELEASE_SERIAL << 0))

The '5' in the "parse error before '5'" is the PY_MICRO_VERSION; the
macro looks ok to me, but I haven't used C to any great extent in
literally years. Am I making some very naive mistake? 

>I'm just undecided on the design. There are a couple of
>different coroutine interfaces. You find them for instance in
>Scheme, in Modula II, some Oberons, Icon, and in Tim Peter's
>example which I added to my stackless archive.
>Do you have a proposal?

Not really; all I know is a little Scheme, and that part of my brain
is telling me that "coroutines are just closures over continuations." 
Fortunately, I'm still able to realize that that's probably the
wrong interface. :)


Neel