On 2011-07-07 09:16, Johan Råde wrote:
Thanks for all the help! Here is a 3rd and last question.
Once I have figured this one out, I will be done porting my project from
boost.python to SIP.
I need to translate C++ exceptions to Python exceptions.
I have a function that does that:
void translate(const std::exception& e)
{
if(dynamic_cast<const FailedToOpenFile*>(&e))
PyErr_SetString(PyExc_IOError, e.what());
else if(dynamic_cast<const EndOfFile*>(&e))
PyErr_SetString(PyExc_EOFError, e.what());
...
}
Next I need to "apply" this function to all wrapped functions.
With boost.python I do that as follows:
boost::python::register_exception_translator<std::exception>(&translate);
With SWIG I do:
%exception {
try {
$action
} catch(const std::exception& e) {
translate(e);
return NULL;
}
}
How do I do that with SIP?
I tried adding the following directive to my sip file, but it seems to
have no effect. There is still a crash when an exception is thrown in
the C++ code.
%Exception std::exception
{
%TypeHeaderCode
# include "../../Common.h"
# include "../../TextTable/Exceptions.h"
%End
%RaiseCode
SIP_BLOCK_THREADS
translate(sipExceptionRef)
SIP_UNBLOCK_THREADS
%End
};
The functions translate is declared in the header Exceptions.h and is
defined as
void translate(const std::exception& e)
{
if(dynamic_cast<const FailedToOpenFile*>(&e))
PyErr_SetString(PyExc_IOError, e.what());
else if(dynamic_cast<const EndOfFile*>(&e))
PyErr_SetString(PyExc_EOFError, e.what());
...
}
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