Re: [C++-sig] pygccxml and multidimensional arrays
On Wed, Apr 22, 2009 at 11:43 PM, Davidson, Josh wrote: > Is this a confirmed bug? > > Thanks, I am sorry, but I am pretty busy these days ( too much production problems and too litle people who handles them ). I will try to take a look on your problem this evening. I will let you know. Do you have some concrete usage example, so may be, I will be able to provide quick work-around? -- Roman Yakovenko C++ Python language binding http://www.language-binding.net/ ___ Cplusplus-sig mailing list Cplusplus-sig@python.org http://mail.python.org/mailman/listinfo/cplusplus-sig
Re: [C++-sig] pygccxml and multidimensional arrays
I'm using information provided by pygccxml to generate Construct objects (http://construct.wikispaces.com/) that are capable of reading and writing to data structures stored in shared memory. Right now, I just manually reverse the indices any time I detect an array type before I generate a Construct. Josh -Original Message- From: cplusplus-sig-bounces+josh.davidson=lmco@python.org [mailto:cplusplus-sig-bounces+josh.davidson=lmco@python.org] On Behalf Of Roman Yakovenko Sent: Thursday, April 23, 2009 11:11 AM To: Development of Python/C++ integration Subject: Re: [C++-sig] pygccxml and multidimensional arrays On Wed, Apr 22, 2009 at 11:43 PM, Davidson, Josh wrote: > Is this a confirmed bug? > > Thanks, I am sorry, but I am pretty busy these days ( too much production problems and too litle people who handles them ). I will try to take a look on your problem this evening. I will let you know. Do you have some concrete usage example, so may be, I will be able to provide quick work-around? -- Roman Yakovenko C++ Python language binding http://www.language-binding.net/ ___ Cplusplus-sig mailing list Cplusplus-sig@python.org http://mail.python.org/mailman/listinfo/cplusplus-sig ___ Cplusplus-sig mailing list Cplusplus-sig@python.org http://mail.python.org/mailman/listinfo/cplusplus-sig
Re: [C++-sig] pygccxml and multidimensional arrays
On Thu, Apr 23, 2009 at 8:17 PM, Davidson, Josh wrote: > I'm using information provided by pygccxml to generate Construct objects > (http://construct.wikispaces.com/) that are capable of reading and > writing to data structures stored in shared memory. Right now, I just > manually reverse the indices any time I detect an array type before I > generate a Construct. Okey. P.S. You have interesting project. Some time ago I was playing with idea to generate serialize\unserialize\[upgrade] for C++ classes based on ASN.1, but dropped it. -- Roman Yakovenko C++ Python language binding http://www.language-binding.net/ ___ Cplusplus-sig mailing list Cplusplus-sig@python.org http://mail.python.org/mailman/listinfo/cplusplus-sig
Re: [C++-sig] pygccxml and multidimensional arrays
On Thu, Apr 23, 2009 at 9:21 PM, Roman Yakovenko wrote: > On Thu, Apr 23, 2009 at 8:17 PM, Davidson, Josh > wrote: >> I'm using information provided by pygccxml to generate Construct objects >> (http://construct.wikispaces.com/) that are capable of reading and >> writing to data structures stored in shared memory. Right now, I just >> manually reverse the indices any time I detect an array type before I >> generate a Construct. > > Okey. Sorry, I forgot to add, can you open bug on SourceForge project page? Thanks. -- Roman Yakovenko C++ Python language binding http://www.language-binding.net/ ___ Cplusplus-sig mailing list Cplusplus-sig@python.org http://mail.python.org/mailman/listinfo/cplusplus-sig
Re: [C++-sig] Expanding embedded code
Robin Gilks wrote: I'm still having a problem with the python side of things - the c++ side mostly makes sense. For example, the "class instances" section of the page at http://wiki.cacr.caltech.edu/danse/index.php/Lots_more_details_on_writing_wrappers I can follow with no problems but I've no idea how to invoke it from python with either the "wrap_new_Numbers" call or the subsequent "wrap_Numbers_MemberMult" call. I just don't get what the python code should look like to get the void pointer to the class instance at all! Any chance of a Python 3 liner that shows how its done? I'm not sure what you are asking. Sticking to my example code, when you run the python script, 'instance' will be available in the global namespace, so you can make calls into it from Python. If that is not what you want, can you come up with another example ? Thanks, Stefan -- ...ich hab' noch einen Koffer in Berlin... ___ Cplusplus-sig mailing list Cplusplus-sig@python.org http://mail.python.org/mailman/listinfo/cplusplus-sig
Re: [C++-sig] Expanding embedded code
Stefan Seefeld wrote:
I'm not sure what you are asking. Sticking to my example code, when
you run the python script, 'instance' will be available in the global
namespace, so you can make calls into it from Python. If that is not
what you want, can you come up with another example ?
Thanks,
Stefan
The problem is my lack of Python knowledge - the 35+ years assembler
experience doesn't seem to count!!
I've attached a minimal set of files and a make file that I hope will
illustrate the problem. I'm generating the bindings using pybindgen
(version 0.10.0). I hope that just typing make will show all my
mistakes!! The test1.py python script has the questions - how do I get
the specific instance of the class already instantiated before calling
the script to be referenced rather than a new instance. I'm passing the
class pointer across to the script in a PyCObject but once in the python
domain I don't have a clue as to what to do with it!!
Note - I'm specifically using pybindgen so I can read the generated code
- Boost makes my brain hurt...
Cheers
--
Robin
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===
# All of the sources participating in the build are defined here
C_SRCS = testclass.C testif.C
OBJS = testif.o testclass.o
C_DEPS = testif.C
# All Target
all: testclass
# Tool invocations
testclass: $(OBJS) testclassgen.py
@echo 'Building target: $@'
@echo 'Invoking: GCC C Linker'
$(CXX) -o "testclass" testclass.o testif.o -l python2.5
@echo 'Finished building target: $@'
@echo ' '
testif.C: testclass.H
python testclassgen.py > testif.C
# Other Targets
clean:
-$(RM) $(OBJS) $(C_DEPS) testclass *.pyc
-...@echo ' '
.PHONY: all clean dependents
.SECONDARY:
INCLUDES+= -I. -I /usr/include/python2.5
CXX = g++
CC = gcc
WARNFLAGS += -W -Wall
DEBUGFLAGS = -g
CXXFLAGS += -pipe -funit-at-a-time $(DEBUGFLAGS) $(INCLUDES) $(DEFINES)
$(WARNFLAGS)
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the subject of legal or other privilege, none of which is waived or
lost by reason of this transmission.
If the receiver is not the intended addressee, please accept our
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===
'''test.py - Python source designed to demonstrate the use of python embedding'''
import testclass
class ReceiveData:
def Receive(self, ptr, command, length, packet):
print "Got command", command, "of length", length
# how do I get the CObject in ptr into 'my' without creating a new instance
my = testclass.testclass()
# this as it is now will use another instance of testclass and return garbage
print "Type should = 123, is = ", my.Gettype()
print "Size should = 45, is = ", my.Getsize()
return 0
// 1) setenv PYTHONPATH ${PYTHONPATH}:./
// 2) exe py_script class method command (int) length (int) data (string)
// eg. ./testclass test1 ReceiveData Receive 65 4 "aassddd"
#include
#include "testclass.H"
PyMODINIT_FUNC inittestclass(void);
static void delclass(void *ptr)
{
testclass * oldclass = static_cast(ptr);
delete oldclass;
return;
}
int
main (int argc, char *argv[])
{
PyObject *pName, *pModule, *pDict, *pClass, *pInstance, *pValue, *pCObject;
if (argc < 5)
{
printf(" Not enough params\n");
exit(1);
}
if (PyImport_AppendInittab("testclass", inittestclass) == -1)
{
printf("Couldn't append to initial table\n");
return 1;
}
Py_Initialize ();
pName = PyString_FromString (argv[1]);
pModule = PyImport_Import (pName);
if (PyErr_Occurred())
{
PyErr_Print();
return 1;
}
pDict = PyModule_GetDict (pModule);
if (pDict == NULL)
{
printf ("Dictionary reference to %s not found\n", argv[1]);
return 1;
}
// Build the name of a callable class
pClass = PyDict_GetItemString (pDict, "ReceiveData");
if (pClass == NULL)
{
printf ("Class %s not found in module %s\n", "ReceiveData",
