Hello!
Here's an update on pirate (the python to parrot compiler) from the
trenches.
Pirate started as an example that fit in one small file and it stayed
in that single file over the years while it grew into a *huge* mess:
one monolithic object performing a variety of transformations on
On Wed, 24 Aug 2005, Sam Ruby wrote:
[huge cut]
Below is from the sample that Leo provided.
# print foo.f(2)
# emulate python find_name, which checks attributes too
push_eh m_nf
$P0 = foo.f(2)
clear_eh
goto m_f
m_nf:
# getattribute would also check
On Fri, 5 Aug 2005, Leopold Toetsch wrote:
There are still issues e.g. with namespaces. I've put out numberless
mails on p6i where I invited HLL folks to discuss it and make some
proposals. Guess how many answers these mails got.
Zero? I don't think p6i is the right place for that.
We should
On Thu, 4 Aug 2005, Leopold Toetsch wrote:
Michal Wallace wrote:
And wouldn't you know it... A bug on the parrot
side cropped up out of nowhere to break them!
==17366== valgrind's libpthread.so: IGNORED call to: pthread_attr_destroy
==17366== Invalid read of size 4
==17366
Help! :)
Sam Ruby is giving a speech at OSCON tomorrow
about python on parrot.
The pirate tests run hourly against the latest
repository versions of pirate and parrot at:
http://pirate.tangentcode.com/
And wouldn't you know it... A bug on the parrot
side cropped up out of nowhere to break
On Thu, 7 Jul 2005, Larry Wall wrote:
On Thu, Jul 07, 2005 at 09:28:04PM -0400, Michal Wallace wrote:
: What I'd want is to be able to download the language
: specific extensions as a library from cpan. Better
: yet if users can do it themselves without having
: to bug me.
Hmm...
: Sure, I'd
On Thu, 7 Jul 2005, Roger Browne wrote:
Leopold Toetsch wrote:
Well, if you have some mixed environment, you'd probably build parrot on
all machines with the PMC's needed. Something like:
perl Configure.pl --with-tcl --with-python
to get these PMCs built on it.
I'm thinking of
On Fri, 1 Jul 2005, Leopold Toetsch wrote:
Kevin Tew wrote:
I've been working on a python compiler also, feel free to take a look,,
svn co http://svn.openfoundry.org/pyparrot languages/python/pyparrot
My current boggle is how to handle the self parameter to method functions.
You can do
I just set up a new list for pirate, a python
compiler for parrot.
Quite a bit of work has been done on pirate since I
last updated the website back in 2003, mostly by
Sam Ruby of http://intertwingly.net/
Sam is giving a python-on-parrot presentation at
OSCON on August 4, so I'd like to
On Wed, 25 May 2005, [EMAIL PROTECTED] wrote:
hi
python on parrot already have not develop?
Hi there,
I'm not sure I understand your question either...
But maybe this will help?
http://pirate.tangentcode.com/
- Michal
http://withoutane.com/
Hi all,
So I'm still thinking about a generic
wrapper for python modules. I would like
to be able to recompile the python standard
library (and other libraries) to run on parrot
with only a few minor patches.
I realize this is probably completely foolish,
but I'm lazy, so... :)
I've done
On Sun, 15 May 2005, Kevin Tew wrote:
I've taken the code from
http://www.intertwingly.net/stories/2004/10/05/pyrate.zip,
which I assume to be Sam's code. It was basically stubs
with a few AST nodes implemented when I started with it.
Er. Yes. I can't speak for Sam, but I interpreted his post
as
On Thu, 19 Feb 2004, Dan Sugalski wrote:
I tried to unify attributes and properties--I really did. The
problem is that they're horribly semantically different. Attributes
are class private and guaranteed across all objects of a class,
while properties are ad hoc and can be thrown on anything.
On Wed, 18 Feb 2004, Dan Sugalski wrote:
Just to let everyone know, if there aren't any comments on the scheme
in PDD 15, I'm going to implement it as-is and be done with it, at
least for now. This would be a good time to speak up--can't guarantee
that I'll put the changes in for this rev,
On Sun, 15 Feb 2004, Luke Palmer wrote:
As with Perl 6. A sub object has a Cdo trait which specifies what
to do when it's called.
Cool.
But I think findmethod is a good idea, cross-language-wise. Each
language has a different idea of what a method is, and they can
store it that way. As
On Fri, 13 Feb 2004, Dan Sugalski wrote:
We also have to have a way to fetch the method PMC for a named method
for later use, which is where the interesting bits come in.
This is required for a number of reasons, including Python, so we
have to have it. The question is... *When* is the name
On Sat, 14 Feb 2004, Michal Wallace wrote:
class Alice:
def whoami(self):
return Alice
class Bruce:
def whoami(self):
return Bruce
a = Alice()
b = Bruce()
a.whoami, b.whoami = b.whoami, a.whoami
assert a.whoami()==Bruce
On Mon, 9 Feb 2004, Melvin Smith wrote:
At 07:26 PM 2/5/2004 -0500, Will Coleda wrote:
Melvin:
Here's a warnocked imcc issue for you:
int main () {
int if = 1;
if (if) {
if = 0;
}
}
My take on it is, since it is an intermediate language, we don't need
ability to have
Dan,
What is your plan for getting python
objects working for the pie-thon?
I've made a small start on wrapping
PythonObjects as PMC's and that seems
to work. It's also a whole lot easier
than trying to recode them as PMCs
directly or writing them in imc/pir.
They just need to be tricked into
On Tue, 3 Feb 2004, Pete Lomax wrote:
.sub _main
goto L1
test:
$I1 = 1
ret
L1:
$I2 = 2
call test
print $I2 # prints 1, not 2
end
.end
...
Again, sorry to be a pain, but I'd like the truth/an update, please!
Or some hints... file
On Thu, 22 Jan 2004, Leopold Toetsch wrote:
Michal Wallace [EMAIL PROTECTED] wrote:
I'm trying to make a dynamically loaded PMC that
subclasses another dynamically loaded PMC.
Its a linker problem, but not too simple. Your analysis is correct:
pistring needs the symbol
On Fri, 23 Jan 2004 [EMAIL PROTECTED] wrote:
The subject says it all.
As parrot is designed to be targetted by many langauges,
how will it handle 'eval' opcodes for those different languages?
Shell out to a seperate process?
You could do that, or you can provide a C-based
compiler as a PMC
Hi all,
I'm hoping this is just a simple linker option, but
I've been reading ld manuals for the past few
hours and I just don't get it. :)
I'm trying to make a dynamically loaded PMC that
subclasses another dynamically loaded PMC.
I made two files in parrot/dynclasses/ :
// file 1:
On Fri, 16 Jan 2004, Dan Sugalski wrote:
2) Those that explicitly check for events
...
Ops like spin_in_event_loop (or whatever we call it) or checkevent is
in category two. They check events because, well, that's what they're
supposed to do. Compilers should emit these with some frequency,
On Fri, 16 Jan 2004, Dan Sugalski wrote:
I don't understand that part. Why the compiler?
Because we don't have the sort of control of the async environment
that hardware does to deal with interrupts.
And, realistically, all code has to deal with the possibility of
interrupts. Even if they
On Mon, 12 Jan 2004, Luke Palmer wrote:
I have somewhat a predicament. I want to create a continuation, and
have that continuation stored in the register stack that it closes
over (this is how I'm implementing a loop with continuations).
Unless I'm having a major braino, I don't think this
On Mon, 12 Jan 2004, Luke Palmer wrote:
Michal Wallace writes:
On Mon, 12 Jan 2004, Luke Palmer wrote:
I have somewhat a predicament. I want to create a continuation, and
have that continuation stored in the register stack that it closes
over (this is how I'm implementing a loop
On Mon, 12 Jan 2004, Luke Palmer wrote:
Well... A Coroutine is a pausable, resumable continuation, right?
Or basically a closure with a continuation inside it.
Both of those sentences seem wildly redundant to me. I think we might
be stuck on vocabulary. We're surely both understanding
On Sun, 11 Jan 2004, Leopold Toetsch wrote:
Michal Wallace [EMAIL PROTECTED] wrote:
When you invoke a Coroutine, it calls swap_context()
from src/sub.c ... There's an else clause in there
that either swaps or restores theinterpreter stack,
but as far as I can tell, swap_context
Hey all,
When you invoke a Coroutine, it calls swap_context()
from src/sub.c ... There's an else clause in there
that either swaps or restores theinterpreter stack,
but as far as I can tell, swap_context() is ONLY
called when entering a coroutine - not when we're
suspending it. That means all
On Fri, 9 Jan 2004, Jeff Clites wrote:
On Jan 9, 2004, at 12:24 AM, Leopold Toetsch wrote:
Michal Wallace [EMAIL PROTECTED] wrote:
#!/bin/env parrot
#
# yieldbug.imc
#
# This program should print dots forever.
# Instead it prints a few dots and then segfaults.
It does print
On Fri, 9 Jan 2004, Leopold Toetsch wrote:
Michal Wallace [EMAIL PROTECTED] wrote:
newsub $P1, .Continuation, done
For returning just use a .RetContinuation. Or still better, just omit
$P1 totally here:
.pcc_call $P0, $P1
Aha! I like that even better. :) Thanks!
Sincerely
On Fri, 9 Jan 2004, Luke Palmer wrote:
Very rarely would you not savetop before creating a *real* continuation.
But again, very rarely would you actually create a *real* continuation
(depending on your language). RetContinuations are almost always a
better choice for traditional languages,
On Fri, 9 Jan 2004, Leopold Toetsch wrote:
Michal Wallace [EMAIL PROTECTED] wrote:
Hey all,
When you invoke a Coroutine, it calls swap_context()
Can you have a look at imcc/t/syn/pcc.t, there is an coroutine
iterator test.
Yep, it has the same problem. The patch below exposes
On Wed, 7 Jan 2004, Luke Palmer wrote:
Er, sorry, that's IMCC's fault. This works:
new felix, $I0
Yep! Thanks!
Here's a short example of the final script:
.sub _main
.local object Cat
.local object felix
newclass Cat, Cat
find_type $I0, Cat
new felix, $I0
$P0 = new
On Thu, 8 Jan 2004, Leopold Toetsch wrote:
Michal Wallace [EMAIL PROTECTED] wrote:
I'm not even trying to get objects working yet. I just
need something that'll let me run setprop on it
You can attach properties to all PMCs. And WRT object instantiation:
t/pmc/object*.t but only integer
On Thu, 8 Jan 2004, Leopold Toetsch wrote:
Michal Wallace [EMAIL PROTECTED] wrote:
What exactly is the difference between an
attribute and a property?
$ perldoc docs/pdds/pdd15_objects.pod
/TRANSLATION AND GLOSSARY
Thanks. Don't mind me. I'm going to go make
a card that says RTFM on my
Luke Palmer wrote:
This patch re-implements the register backing stacks as PObjs (so
they can be garbage-collected), honors their COW flags, and adds
them to the interpreter context (where they should be, honest!).
As a healthy side-effect, it encapsulates their behavior nicely into
I love the new syntax for calling functions!
Thanks Melvin!!!
And... here's a weird bug. :)
The following code fails with the message
No Entries on UserStack! But, if you
delete either/both of the empty comment
lines and it works fine. :)
.sub _main
$P0 = new PerlString
$P0 = hello\n
#!/bin/env parrot
#
# yieldbug.imc
#
# This program should print dots forever.
# Instead it prints a few dots and then segfaults.
#
# parrot -t shows this bug:
#
#parrot: src/stacks.c:95: stack_height:
#Assertion `height == (top-n_chunks - 1) * 256 + top-used' failed.
#Aborted
#
# It
On Thu, 8 Jan 2004, Luke Palmer wrote:
@pcc_sub_call_4:
set P0, P17
set P1, P16
set I0, 0
set I1, 0
set I2, 0
set I3, -2
updatecc
savetop
invoke
done:
restoretop
set P16, P5
When the
On Tue, 2 Dec 2003, Dan Sugalski wrote:
*) Creating new objects involves calling the -init vtable entry *on
the class*. Because of this each class gets a custom vtable where the
init method has been swapped out for one (from objects.c) that
creates a new object instead.
Well, cool! How do I
On Wed, 7 Jan 2004, Luke Palmer wrote:
Should go something like this:
.sub _main
.local object Cat
.local object felix
newclass Cat, Cat
find_type $I0, Cat
felix = new $I0
# ...
.end
Thanks, but that doesn't work either. :/
The
On Wed, 3 Dec 2003, Leopold Toetsch wrote:
Dan Sugalski [EMAIL PROTECTED] wrote:
At 12:17 PM +0100 12/3/03, Leopold Toetsch wrote:
Create an Exception class hierarchy?
I'm not 100% sure I want to go with a real OO style of exceptions,
but that might just be the neo-luddite in me.
Is it possible to print out the line number
of the bad instruction when parrot encounters
an error and fails? I'm trying to get my
generated code to work with the latest version
of pirate and I'm having to rely on GOT THIS FAR
print statements to find the lines that are
giving me errors.
I
Looking more at exceptions here... I
used to be able to put arbitrary
stuff in the _message slot of a
ParrotException... Now we can only use
strings. Is that permanent?
PythonException will need to be able
to hold an arbitrary python object.
I'm faking it by stuffing my PMC into
a string
On Mon, 6 Oct 2003, Melvin Smith wrote:
In an attempt to get a handle on what the status is of all the
language compilers we have (in various states) I added
a file called LANGUAGES.STATUS under parrot/languages
Just read the file and it explains itself. Please, if you are
the author of
Sorry, I've been following this list
with one eye tied behind my back...
What happened to setline? Should I
emit something else instead?
Sincerely,
Michal J Wallace
Sabren Enterprises, Inc.
-
contact: [EMAIL PROTECTED]
hosting: http://www.cornerhost.com/
On Fri, 19 Sep 2003, Nicholas Clark wrote:
[talking about dynamically intering the debugger]
Can anyone see a sane way to do it?
Better still, can anyone see a viable way to do it on perl5?
Python does this. There's basically a hook after every
statement, and you can put whatever you want
On Sun, 7 Sep 2003, Leopold Toetsch wrote:
I'm currently investigating the AST (abstract syntax tree) interface
for Parrot. For getting a feeling, how this could look like, I've
implemented (some parts) of Yet Another Language (YAL).
I like it. What is this written in? C or Perl or what?
If
On Sun, 24 Aug 2003, Benjamin Goldberg wrote:
Togos wrote:
What's the reasoning behind putting the object a
method is being called on in P2 instead of in the
first parameter of the method? I have a feeling that
putting it as the first parameter of the method would
make the lives of
On Sun, 24 Aug 2003, Leopold Toetsch wrote:
We have two kinds of file/line information: Parrot source and HLL
source. So the C.currentline macro needs duplication or an argument
specifying, which source it should denote.
And when parrot throws an error and complains about line 5,
which one
On Fri, 22 Aug 2003, Benjamin Goldberg wrote:
Michal Wallace wrote:
On Thu, 21 Aug 2003, Benjamin Goldberg wrote:
If you want, instead, to serialize interpreter-microthreads,
however... well, you'd *still* get almost the whole interpreter
serialized, but you're getting more bang
On Thu, 21 Aug 2003, Tom Locke wrote:
(not sure who you're quoting here... dan I think)
But Parrot has continuations. Doesn't this gives me (cooperative)
microthreads? (with a little work on my part).
Sure...
So these would be real cheap right? Time and space overheads similar to
On Thu, 21 Aug 2003, Benjamin Goldberg wrote:
I hope you aren't planning on serializing just a single isolated
microthread... that wouldn't work well with what I've got in mind due to
how much stuff comes along when you serialize a continuation -- you'd
get almost the whole interpreter
On Wed, 20 Aug 2003, Tom Locke wrote:
I am currently embarking on a project to create a new language. Right now
I'm in the process of selecting the platform that's going to give me the
best starting point.
My first choice is whether to go for a VM, or a C-Python style
implementation. Right
On Sun, 17 Aug 2003, Benjamin Goldberg wrote:
Michal Wallace wrote:
Uh-oh. I just went to implement del x
and there's no op to remove a variable
from a lexical pad! :)
Why would you want to remove a variable from a lexical pad?
Surely the right thing to do would be to create a new
On Sun, 17 Aug 2003, Luke Palmer wrote:
Benjamin Goldberg writes:
Hmm... I just thought of something. Since 'set' semantics can be easily
simulated when we have only ops for 'assign' semantics, maybe imcc
itself could do this for us.
That is, by default,
$P0 = $P1 + $P2
will
On Mon, 18 Aug 2003, Benjamin Goldberg wrote:
Hmm. Do you mean
if for stmt in block:
if stmt.type == undef:
flag_as_going_to_delet(stmt.varname)
So I can create a new pad when it's assigned?
Right. You'd create a new pad just before the for, and put stmt
into
I haven't looked into this at ALL, but I was
curious about the IMCC optimization flags:
[~/pirate]: ./pirate.py -d weightless.py weightless.imc
[~/pirate]: parrot weightless.imc
ended with: L 450
total time: 23
[~/pirate]: parrot -O=1 weightless.imc
ended with: L 450
total time: 22
On Sat, 16 Aug 2003, Sean O'Rourke wrote:
Michal Wallace [EMAIL PROTECTED] writes:
Tadaa!
/me blinks at the list comprehensions.
:)
Cool stuff. test_microthreads failed for
some reason I still need to look into, but
there's a lot of cool stuff working
already. Time for Dan
On Fri, 15 Aug 2003, Leopold Toetsch wrote:
PS: have a look at the rather new Cunless a op b opcode in PIR ;-)
Cool! :)
Sincerely,
Michal J Wallace
Sabren Enterprises, Inc.
-
contact: [EMAIL PROTECTED]
hosting: http://www.cornerhost.com/
my site:
Uh-oh. I just went to implement del x
and there's no op to remove a variable
from a lexical pad! :)
Sincerely,
Michal J Wallace
Sabren Enterprises, Inc.
-
contact: [EMAIL PROTECTED]
hosting: http://www.cornerhost.com/
my site: http://www.withoutane.com/
Just tried out Kenneth Grave's yield stuff --
it works great!
But shouldn't .pcc_begin_yield and .pcc_end_yield
do saveall and restoreall, respectively?
Is there a case where we wouldn't want this?
Sincerely,
Michal J Wallace
Sabren Enterprises, Inc.
-
I said:
But shouldn't .pcc_begin_yield and .pcc_end_yield
do saveall and restoreall, respectively?
Is there a case where we wouldn't want this?
Yes, because for python anyway, I also need to
put pop_pad in there:
saveall
pop_pad
.pcc_begin_yield
.return whatever
.pcc_end_yield
It seems that exception handlers get tied to
subroutines when they're created, not when
they're actually used. For example:
## this works:
try:
f = make_function()
f.die() # raise some error
except:
pass
## this does not work:
f = make_function()
On Sat, 16 Aug 2003, Leopold Toetsch wrote:
I have put in scratchpad_delete
peek_pad P0
delete P0[foo]
deletes names only.
Thanks! works great!
Sincerely,
Michal J Wallace
Sabren Enterprises, Inc.
-
contact: [EMAIL PROTECTED]
hosting:
I expected getprop to behave like find_lex
and throw an exception if the property doesn't
exist, but it doesn't:
.sub _main
.local object Class
.local object setv
.local object getv
Class = new ParrotClass
setv = new PerlString
setv = value\n
setprop Class, name, setv # ok
On Sat, 16 Aug 2003, Sean O'Rourke wrote:
Michal Wallace [EMAIL PROTECTED] writes:
I expected getprop to behave like find_lex
and throw an exception if the property doesn't
exist, but it doesn't:
Are you sure that properties are what you want to use
here, rather than attributes (via
Tadaa!
Okay. I've done (almost) everything I can
do for python without jumping into C.
So here's a release!
http://pirate.tangentcode.com/
Check out the generator-based microthreads
demo. :) It's horribly slow, but it works!
And note the PARROT_INLINE function - a
nice little touch, I
raise hell is working great
with the new find_lex exceptions. Thanks! :)
Any plans to to add pow for PMC's?
What about separate ops for floor/true division?
http://www.python.org/doc/2.2.1/whatsnew/node7.html
Sincerely,
Michal J Wallace
Sabren Enterprises, Inc.
On Fri, 15 Aug 2003, Leopold Toetsch wrote:
When we have more classes like a Python hierarchy, we will see, how and
how far the functionality does match. If we find some, we can put in an
intermediate ParrotScalar.
I was thinking about this earlier today. Once dynamic
PMCs are working, Perl*
The following code segfaults immediately.
If you uncomment the second line (print )
it works.
However, if you then uncomment the #non_prototyped
keyword in _depth1, it segfaults immediately again.
When I say it segfaults immediately, I mean that
the initial 0 is not printed.
(Should I be
On Sun, 10 Aug 2003, Vladimir Lipskiy wrote:
Seems to be related with the multiple freeing reported by Michael.
I thought his name was Michal (:8
yes, I was born without an e. :)
Sincerely,
Michal J Wallace
Sabren Enterprises, Inc.
-
contact: [EMAIL
On Sat, 9 Aug 2003, Sean O'Rourke wrote:
Remember, the pad depth reflects lexical scope nesting,
not dynamic scoping. So if you mean current_depth as
current compile-time depth above, then you're right,
but the VM would have no way to tell. If you mean
run-time depth, which the compiler
On Mon, 11 Aug 2003, Brent Dax wrote:
Sean O'Rourke:
# * make parrotclass handle invoke
# this strikes me as the most efficient,
# but I'm not really confident with C
# so I'm hesitant to try it
#
# This seems to me like the way to go, except you might
# subclass
After running cvs up -d
and then make, a bunch of my
tests broke. Here's the problem
boiled down to the simplest case I
can find:
[~/pirate]: cat bug.imc
.sub __main__
$P2 = new PerlInt
$P2 = 1
$P3 = new PerlInt
$P3 = 1
if $P2 == $P3 goto cmp1
This is just a question I've been wondering about,
that I think could be a huge PR sell for parrot
in the python world if the answer is yes.
Could you serialize a parrot function?
In other words, if you interactively define a
function at the prompt, could you save it to
disk? (not the source
On Tue, 5 Aug 2003, Stephen Thorne wrote:
It seems to me that if we want to maximize the
number of languages using it, the generic
compiler shouldn't depend on anything but
C and parrot... But until we get it working,
I'd like to stick to a dynamic language like
On Sun, 10 Aug 2003, Leopold Toetsch wrote:
Piers Cawley [EMAIL PROTECTED] wrote:
Leopold Toetsch [EMAIL PROTECTED] writes:
As calling conventions clearly state, that the caller has to save
everything, its probably up to imcc/pcc.c to insert above
statements, if another sub gets called
On Sat, 9 Aug 2003, Benjamin Goldberg wrote:
Michal Wallace wrote:
[snip]
def f():
return g()
[snip]
# f from line 3
.pcc_sub _sub1 non_prototyped
.local object res1# (visitReturn:528)
find_lex $P2, 'g' # (callingExpression:325
On Fri, 8 Aug 2003, TOGoS wrote:
I want to be able to have a function with
this kind of signature:
func ($param1, *$otherparams)
AFAIK, there is no way to implement this
with the current calling conventions. You
would have to do something with variable
register IDs, which we don't have
On Mon, 11 Aug 2003, Thomas Vesper wrote:
Michal Wallace wrote:
Out of curiosity, why does ~ map to both
unary bitwise-not and binary bitwise-xor
in imcc?
I was expecting xor to be ^ and ^^
See Apocalypse 3 for this.
^ was reclaimed for hyperoperators.
Binary ~ was chosen
On Mon, 11 Aug 2003, Joseph F. Ryan wrote:
How are you currently throwing/catching exceptions? I think it
might be much more difficult to create a model that traps
exceptions, rather than setting up code that just figures out how
to handle an exception when it occurs. Both JVM-PIR and P6C
On Sat, 9 Aug 2003, Leopold Toetsch wrote:
Nice coincidence. S. Togos' bug report too.
Anyway, its already fixed.
Gosh you're quick. Thanks!
Want another one? :)
def g():
return 0
def f():
return g()
print f()
This prints:
'No more I register frames
On Tue, 5 Aug 2003, Piers Cawley wrote:
Approaching Python
Discussions (and coding) of the Parrot implementation of Python
continued this week. Michal Wallace is working on taking a preexisting
(but incomplete, it's a proof of concept only) python parse tree -
Wow, after
On Tue, 12 Aug 2003, Michal Wallace wrote:
I wound up getting a couple C books today. I'm
trying to see what I can do about wrapping
PyObject as a PMC...
What's the secret to making parrot recognize
a new PMC? I've got my .pmc file but I'm
not sure what to do next. The article about
making
On Tue, 5 Aug 2003, Dan Sugalski wrote:
The original thought was to use the new perl 6 grammar engine/code
to do this, but I think it'll be a while before that's ready to go.
I think perl6 is definitely the way to go, once it's ready.
BTW, what's the deal with Bundle::Perl6? I tried
Here's a new test case for t/pmc/sub.t
output_is('CODE', 'OUTPUT', set_eh - throw - clear_eh);
print start\n
newsub P20, .Exception_Handler, _handler
set_eh P20
new P30, .Exception
throw P30
print not reached\n
end
_handler:
clear_eh
print caught
Just wrapping up an all-night coding spree...
Py-pirate can now handle:
- functions (closures, recursion, etc)
- global variables
- tuples (but they turn into lists)
- dictionaries (create, setitem, getitem, print)
- list comprehensions
- raise (strings only)
- try...except
On Mon, 11 Aug 2003, Leopold Toetsch wrote:
No, the exception object isn't around anymore in the handler, so you
don't Cclear_eh there.
This could of course be just my wrong implementation.
No, it makes sense. You wouldn't want an exception in
the catch: block to trigger an infinite loop.
On Sat, 9 Aug 2003, Leopold Toetsch wrote:
As calling conventions clearly state, that the caller has to save
everything, its probably up to imcc/pcc.c to insert above statements, if
another sub gets called from a sub. I'll fix that in a minute ;-)
I just synced up with cvs and now
On Fri, 8 Aug 2003, TOGoS wrote:
Unprototyped :-) I guess I didn't make that quite
clear, enough.
Nah, you did. I just didn't think about it... :)
I think I see the problem now.
maybe this kind of unprototyped function is expected
to be uncommon enough that we can put up with having
to
On Tue, 12 Aug 2003, Leopold Toetsch wrote:
... So I'm trying to decide between two
approaches:
3) wait until classes and objects are done ;-)
4) simulate an object system with closures :)
I wound up getting a couple C books today. I'm
trying to see what I can do about wrapping
PyObject
Hey all,
Sorry for the huge code listing here, but I don't
have a simpler case. This is what pirate outputs
when it compiles the following program:
def f(x):
if x:
return 1
else:
return 0
print f(1), f(0)
As far as I can
Here is how I usually trigger a generic exception
in python:
raise hell
Traceback (most recent call last):
File stdin, line 1, in ?
NameError: name 'hell' is not defined
Unfortunately, I can't seem to trap that in parrot,
because a find_lex failure isn't an exception.
Or am
perlhash.pod says:
TODO: Steve Fink sayd:
And if there were a keys() method, then 'defined' and 'exists' are
very different. (And there ought to be, and would be if we weren't
all ignoring Leo's iterator proposal.)
I need to read that proposal :-)
Looks like the proposal got accepted?
Out of curiosity, why does ~ map to both
unary bitwise-not and binary bitwise-xor
in imcc?
I was expecting xor to be ^ and ^^
Sincerely,
Michal J Wallace
Sabren Enterprises, Inc.
-
contact: [EMAIL PROTECTED]
hosting: http://www.cornerhost.com/
my site:
On Sat, 9 Aug 2003, Sean O'Rourke wrote:
The problem is that when adder() gets returned, it
needs to remember the enclosing pad. So this needs to
be
newsub $P1, .Closure, _sub1
which (IIRC) will save the lexical environment in which
it was created (see closure.pmc), then restore
On Tue, 5 Aug 2003, Joseph Ryan wrote:
Okay, I don't have a good syntax in mind yet,
the point is it's a template language and you
can subclass/override/extend the template.
Maybe there's no syntax and it just uses
cleanly coded classes in some oo language.
Or perl6 with it's grammars and
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