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python_util_module.cpp
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// $Source: /usr/data0/leipzig_work/tmat_cvs/src/python_util_module.cpp,v $
/* *********************************************************************** */
/* */
/* Copyright (C) 2010 Kort Travis */
/* */
/* */
/* This program is free software; you can redistribute it and/or modify */
/* it under the terms of the GNU Lesser General Public License as */
/* published by the Free Software Foundation; version 2.1 of the License. */
/* */
/* This program is distributed in the hope that it will be useful, */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
/* GNU Lesser General Public License for more details. */
/* */
/* You should have received a copy of the GNU Lesser General Public */
/* License along with this program; if not, write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, */
/* USA. */
/* */
/* *********************************************************************** */
#include <portability.h>
#include <pthread.h>
#if defined(__USE_MPI)
#include <mpi.h>
#endif
#if defined(__USE_OMP)
#include <omp.h>
#endif
#if 1
#include <Python.h>
#if !defined(EMBEDDED_PYTHON)
#define NO_IMPORT_ARRAY
#else
// turned _off_ for the moment ("multiarray.so" import problems):
// #define PY_ARRAY_UNIQUE_SYMBOL PyArray_API
#endif
#include <numpy/arrayobject.h>
// #include <numpy/ufuncobject.h>
// #include <numpy/__multiarray_api.h>
// #include <numpy/__ufunc_api.h>
#endif
#include <assert.h>
#include <stdexcept>
#include <iostream>
#include <sstream>
#include <iomanip>
using std::cout;
using std::endl;
#include <complex>
#include <string>
#include <list>
#include <functional>
#if defined(__PGI)
// PGI compiler uses STLport standard template library; extensions are in "std" namespace (see _STL_EXT_NAMESPACE_ macro in "portability.h"):
#include <algorithm>
#include <numeric>
// #include <slist>
#include <hash_map>
#else
#include <algorithm>
#include <numeric>
#include <ext/algorithm>
#include <ext/numeric>
// #include <ext/slist>
#include <ext/hash_map>
#endif
#include <typeinfo>
#include <tr1/type_traits>
#include <commUtil.h>
using commUtil::abstractCommHandle;
using commUtil::readBinary;
using commUtil::writeBinary;
#include <numericalConstants.h>
#if 0
#include <gmm/gmm_kernel.h>
#include <gmm/gmm_dense_lu.h>
#include <vector_view.h>
#include <matrix_view.h>
#endif
#include <ntuple.h>
using linalg::ntuple;
#if 0
using linalg::ntuple_interval;
#endif
#include <scanner_util.h>
#include <python_util.h>
#if 0
// =========================================== BOOST::PYTHON version ===================================================================================
#include <boost/python.hpp>
/*
http://stackoverflow.com/questions/1008343/boost-python-and-python-exceptions
The proper way to do this under Boost.Python is not to use the C API directly, but install an exception translator: register_exception_translator<RuntimeException>(my_runtime_exception_translator); void my_runtime_exception_translator(RuntimeException const& ex) { PyErr_SetString(PyExc_RuntimeError, ex.toString().c_str()); }
*/
using namespace boost::python;
namespace python_util{
namespace implementation_module{
std::string python_error_string(void)
{
// assume interpreter is initialized:
std::string msg;
try{
if (NULL != PyErr_Occurred()){
// save (and clear) the error indicator:
PyObject *type_save_(NULL), *value_save_(NULL), *traceback_save_(NULL);
// "PyErr_Fetch" returns new refs (any of which may be NULL, but not all):
PyErr_Fetch(&type_save_, &value_save_, &traceback_save_);
// "PyImport_AddModule" returns borrowed ref:
// "PyModule_GetDict" returns borrowed ref:
// borrowed refs to global and local namespace dict:
PyObject
*globals_ = PyModule_GetDict(PyImport_AddModule(const_cast<char*>("__main__"))),
*locals_ = PyEval_GetLocals();
PyObject* rval_(NULL); // return values are usually "None", but I assume the refs are owned.
// re-direct stderr to string-stream:
rval_ = PyRun_String("import sys; import StringIO; stderr_save = sys.stderr; sys.stderr = StringIO.StringIO()", Py_file_input, globals_, locals_);
if (NULL == rval_){
Py_XDECREF(type_save_);
Py_XDECREF(value_save_);
Py_XDECREF(traceback_save_);
throw std::runtime_error("python_error_string: PyRun_String error return"); // throw unexpected...
}
Py_DECREF(rval_);
// restore the error indicator (consumes the refs):
PyErr_Restore(type_save_, value_save_, traceback_save_);
// print the error to the redirected stderr, re-clear the error indicator:
PyErr_Print();
rval_ = PyRun_String("msg_ = sys.stderr.getvalue()", Py_file_input, globals_, locals_);
if (NULL == rval_)
throw std::runtime_error("python_error_string: PyRun_String error return"); // throw unexpected...
Py_DECREF(rval_);
// "PyDict_GetItemString" returns borrowed ref:
PyObject* msg_ = PyDict_GetItemString(globals_, "msg_");
if (NULL == msg_)
throw std::runtime_error("python_error_string: PyDict_GetItemString error return");// throw unexpected...
msg = extract<std::string>(msg_);
// restore stderr to its original stream:
rval_ = PyRun_String("sys.stderr.close(); sys.stderr = stderr_save", Py_file_input, globals_, locals_);
if (NULL == rval_)
throw std::runtime_error("python_error_string: PyRun_String error return"); // throw unexpected...
Py_DECREF(rval_); // usually "None"
}
else
msg = "python error-state NOT set";
}
catch(const std::runtime_error& x){
msg = "python_error_string: unable to extract error information from python C/API:\n "
msg += x.what();
}
return msg;
}
void unload_interpreter(void){
if (Py_IsInitialized())
Py_Finalize();
}
// file-scope only prototypes:
void extract_simple_object_(simple_object_base *&dest, const object &src);
void insert_simple_object_(object& dest, const simple_object_base *src);
// ------------ explicit template specializations: ---------------------------
// -------------- _always_ define double-precision versions: -----------------
template <>
void extract_simple_object<std::complex<double>, double, long>
(simple_object_base *&dest, const std::string& src,
const std::string* ppreamble, const std::string* ppostscript)
{
using boost::python::extract;
try{
if (!Py_IsInitialized())
Py_Initialize();
// get global namespace;
object main_module = import(const_cast<char*>("__main__"));
object global(main_module.attr(const_cast<char*>("__dict__")));
// evaluate the string[s] in the global namespace:
if (ppreamble != NULL)
exec(ppreamble->c_str(), global, global);
std::string exec_str(
"try:\n"
" object = " + src + "\n"
"except:\n"
" print 'embedded python exception:', sys.exc_info()\n");
exec(exec_str.c_str(), global, global);
if (ppostscript != NULL)
exec(ppostscript->c_str(), global, global);
object extractable = global["object"];
#if 0
// *** DEBUG ***
exec("obj_str = repr(object)",global,global);
std::string stmp = extract<std::string>(global["obj_str"]);
cout<<"object in embedded interpreter: "<<stmp<<endl;
#endif
extract_simple_object_(dest, extractable);
#if 0 // try this later
Py_Finalize();
#endif
}
catch(error_already_set const &)
{
throw python_error("python_util::extract_simple_object:");
}
catch (...)
{
cout<<"unknown python exception: error string:"<<endl;
cout<<" "<<python_error_string()<<endl;
}
}
void extract_simple_object_(simple_object_base *&dest, const object &src)
{
using boost::python::extract;
typedef std::complex<double> C;
typedef double R;
typedef long Z;
typedef simple_object_base::object_list LIST;
typedef simple_object_base::object_map MAP;
PyObject *src_(src.ptr());
if (PyBool_Check(src_)){
dest = new simple_object<bool>(extract<bool>(src));
}
else
if (PyNumber_Check(src_)){
if (PyComplex_Check(src_))
dest = new simple_object<C>(extract<C>(src));
else
if (PyFloat_Check(src_))
dest = new simple_object<R>(extract<R>(src));
else
if (PyInt_Check(src_))
dest = new simple_object<Z>(extract<Z>(src));
}
else
if (PySequence_Check(src_)){
if (PyString_Check(src_))
dest = new simple_object<std::string>(extract<std::string>(src));
else
if (PyTuple_Check(src_) || PyList_Check(src_)){
dest = new simple_object<LIST>();
for(size_t n = 0; n < static_cast<size_t>(len(src)); ++n){
simple_object_base *dest_;
extract_simple_object_(dest_, src[n]);
dest->as<LIST>().push_back(dest_);
}
}
}
else
if (PyDict_Check(src_)){
// extract dictionary with _string_ key and arbitrary value:
dest = new simple_object<MAP>();
std::string key;
simple_object_base *val;
object dict_items(src.attr("items")());
for(size_t nitem = 0; nitem < static_cast<size_t>(len(dict_items)); ++nitem){
object item(dict_items[nitem]);
key = extract<std::string>(item[0]);
extract_simple_object_(val, item[1]);
dest->as<MAP>()[key] = val;
}
}
else{
object main_module = import(const_cast<char*>("__main__"));
object global(main_module.attr(const_cast<char*>("__dict__")));
global["bad_object"] = src;
exec("obj_str = str(bad_object)",global,global);
std::string obj_str = extract<std::string>(global["obj_str"]);
throw python_error("extract_simple_object: object type not in { <number>, <sequence>, <dictionary> }: ") + obj_str;
}
}
template <>
void insert_simple_object<std::complex<double>, double, long>
(std::string& dest, const simple_object_base *src)
{
using boost::python::extract;
try{
if (!Py_IsInitialized())
Py_Initialize();
// get global namespace;
object main_module = import(const_cast<char*>("__main__"));
object global(main_module.attr(const_cast<char*>("__dict__")));
// convert simple_object_base to boost::python object:
object dest_;
insert_simple_object_(dest_, src);
// get the string-representation and convert to a std::string:
global["object"] = dest_;
exec("obj_str = repr(object)",global,global);
dest = extract<std::string>(global["obj_str"]);
#if 0 // try this later
Py_Finalize();
#endif
}
catch(error_already_set const &)
{
throw python_error("insert_simple_object:");
}
}
void insert_simple_object_(object& dest, const simple_object_base *src)
{
typedef std::complex<double> C;
typedef double R;
typedef long Z;
typedef simple_object_base::object_list LIST;
typedef simple_object_base::object_map MAP;
// PyObject *src_(src.ptr());
if (src->is<bool>())
dest = object(src->as<bool>());
else
if (src->is<C>())
dest = object(src->as<C>());
else
if (src->is<R>())
dest = object(src->as<R>());
else
if (src->is<Z>())
dest = object(src->as<Z>());
else
if (src->is<std::string>())
dest = object((src->as<std::string>()).c_str());
else
if (src->is<LIST>()){
object dest_ = list(), obj;
const LIST &l(src->as<LIST>());
for(LIST::const_iterator itl = l.begin(), itlEnd = l.end();
itl != itlEnd;
++itl){
insert_simple_object_(obj, *itl);
dest_.attr("append")(obj);
}
dest = tuple(dest_); // repn as tuple rather than a list
}
else
if (src->is<MAP>()){
dest = dict();
std::string key;
object val;
const MAP &m(src->as<MAP>());
for(MAP::const_iterator itm = m.begin(), itmEnd = m.end();
itm != itmEnd;
++itm){
key = (*itm).first;
insert_simple_object_(val, (*itm).second);
dest[key] = val;
}
}
else
throw python_error("insert_simple_object: object type not in { std::complex<double>, double, long, std::string, object_list, object_map }");
}
template < >
void read_pickle<std::complex<double>, double, long>
(simple_object_base *&dest, const std::string& filename)
{
using boost::python::extract;
try{
if (!Py_IsInitialized())
Py_Initialize();
// get global namespace;
object main_module = import(const_cast<char*>("__main__"));
object global(main_module.attr(const_cast<char*>("__dict__")));
// evaluate the string in the global namespace:
std::string exec_str(
"import sys\n"
"try:\n"
" import pickle as PK\n"
" infile = open('" + filename + "','rb')\n"
" object = PK.load(infile)\n"
" infile.close()\n"
"except:\n"
" print 'embedded python exception:', sys.exc_info()\n");
exec(exec_str.c_str(), global, global);
object extractable = global["object"];
#if 0
// *** DEBUG ***
exec("obj_str = repr(object)",global,global);
std::string stmp = extract<std::string>(global["obj_str"]);
cout<<"object in embedded interpreter: "<<stmp<<endl;
#endif
extract_simple_object_(dest, extractable);
#if 0 // try this later
Py_Finalize();
#endif
}
catch(error_already_set const &)
{
throw python_error("python_util::read_pickle:");
}
catch (...)
{
cout<<"python_util::read_pickle: unknown python exception: error string:"<<endl;
cout<<" "<<python_error_string()<<endl;
}
}
template < >
void write_pickle<std::complex<double>, double, long>
(const std::string& filename, const simple_object_base *src)
{
using boost::python::extract;
try{
if (!Py_IsInitialized())
Py_Initialize();
// get global namespace;
object main_module = import(const_cast<char*>("__main__"));
object global(main_module.attr(const_cast<char*>("__dict__")));
// convert simple_object_base to boost::python object:
object src_;
insert_simple_object_(src_, src);
global["object"] = src_;
// get the string-representation and convert to a std::string:
std::string exec_str(
"import sys\n"
"try:\n"
" import pickle as PK\n"
" outfile = open('" + filename + "','wb')\n"
" PK.dump(object, outfile, PK.HIGHEST_PROTOCOL)\n"
" outfile.close()\n"
"except:\n"
" print 'embedded python exception:', sys.exc_info()\n");
exec(exec_str.c_str(),global,global);
#if 0 // try this later
Py_Finalize();
#endif
}
catch(error_already_set const &)
{
throw python_error("python_util::write_pickle:");
}
}
#if defined(__USE_MERE) && 0 // ------------------ temporarily turned-off --------------------------------
// -------------------------- arbitrary-precision versions: ----------------------------------------------
// ---------------- note: these definitions may co-exist with the double-precision definitions -----------
template <>
void extract_simple_object<mere::C, mere::R, mere::Z>
(simple_object_base *&dest, const std::string& src,
const std::string* ppreamble, const std::string* ppostscript)
{
using boost::python::extract;
try{
if (!Py_IsInitialized())
Py_Initialize();
// get global namespace;
object main_module = import(const_cast<char*>("__main__"));
object global(main_module.attr(const_cast<char*>("__dict__")));
// evaluate the string[s] in the global namespace:
if (ppreamble != NULL)
exec(ppreamble->c_str(), global, global);
exec((std::string("object = ") + src).c_str(), global, global);
if (ppostscript != NULL)
exec(ppostscript->c_str(), global, global);
object extractable = global["object"];
#if 0
// *** DEBUG ***
exec("obj_str = repr(object)",global,global);
std::string stmp = extract<std::string>(global["obj_str"]);
cout<<"object in embedded interpreter: "<<stmp<<endl;
#endif
extract_simple_object_(dest, extractable);
#if 0 // try this later
Py_Finalize();
#endif
}
catch(error_already_set const &)
{
throw python_error("extract_simple_object:");
}
}
void extract_simple_object_(simple_object_base *&dest, const object &src)
{
using boost::python::extract;
typedef mere::C C;
typedef mere::R R;
typedef mere::Z Z;
typedef simple_object_base::object_list LIST;
typedef simple_object_base::object_map MAP;
PyObject *src_(src.ptr());
if (PyBool_Check(src_)){
dest = new simple_object<bool>(extract<bool>(src));
}
else
if (PyNumber_Check(src_)){
if (PyComplex_Check(src_))
dest = new simple_object<C>(extract<C>(src));
else
if (PyFloat_Check(src_))
dest = new simple_object<R>(extract<R>(src));
else
if (PyInt_Check(src_))
dest = new simple_object<Z>(extract<Z>(src));
}
else
if (PySequence_Check(src_)){
if (PyString_Check(src_))
dest = new simple_object<std::string>(extract<std::string>(src));
else
if (PyTuple_Check(src_) || PyList_Check(src_)){
dest = new simple_object<LIST>();
for(size_t n = 0; n < static_cast<size_t>(len(src)); ++n){
simple_object_base *dest_;
extract_simple_object_(dest_, src[n]);
dest->as<LIST>().push_back(dest_);
}
}
}
else
if (PyDict_Check(src_)){
// extract dictionary with _string_ key and arbitrary value:
dest = new simple_object<MAP>();
std::string key;
simple_object_base *val;
object dict_items(src.attr("items")());
for(size_t nitem = 0; nitem < static_cast<size_t>(len(dict_items)); ++nitem){
object item(dict_items[nitem]);
key = extract<std::string>(item[0]);
extract_simple_object_(val, item[1]);
dest->as<MAP>()[key] = val;
}
}
else{
object main_module = import(const_cast<char*>("__main__"));
object global(main_module.attr(const_cast<char*>("__dict__")));
global["bad_object"] = src;
exec("obj_str = str(bad_object)",global,global);
std::string obj_str = extract<std::string>(global["obj_str"]);
throw python_error("extract_simple_object: object type not in { <number>, bool, <sequence>, <dictionary> }: ") + obj_str;
}
}
template <>
void insert_simple_object<mere::C, mere::R, mere::Z>
(std::string& dest, const simple_object_base *src)
{
using boost::python::extract;
try{
if (!Py_IsInitialized())
Py_Initialize();
// get global namespace;
object main_module = import(const_cast<char*>("__main__"));
object global(main_module.attr(const_cast<char*>("__dict__")));
// convert simple_object_base to boost::python object:
object dest_;
insert_simple_object_(dest_, src);
// get the string-representation and convert to a std::string:
global["object"] = dest_;
exec("obj_str = repr(object)",global,global);
dest = extract<std::string>(global["obj_str"]);
#if 0 // try this later
Py_Finalize();
#endif
}
catch(error_already_set const &)
{
throw python_error("insert_simple_object:");
}
}
void insert_simple_object_(object& dest, const simple_object_base *src)
{
typedef mere::C C;
typedef mere::R R;
typedef mere::Z Z;
typedef simple_object_base::object_list LIST;
typedef simple_object_base::object_map MAP;
// PyObject *src_(src.ptr());
if (src->is<bool>())
dest = object(src->as<bool>());
else
if (src->is<C>())
dest = object(src->as<C>());
else
if (src->is<R>())
dest = object(src->as<R>());
else
if (src->is<Z>())
dest = object(src->as<Z>());
else
if (src->is<std::string>())
dest = object((src->as<std::string>()).c_str());
else
if (src->is<LIST>()){
object dest_ = list(), obj;
const LIST &l(src->as<LIST>());
for(LIST::const_iterator itl = l.begin(), itlEnd = l.end();
itl != itlEnd;
++itl){
insert_simple_object_(obj, *itl);
dest_.attr("append")(obj);
}
dest = tuple(dest_); // repn as tuple rather than a list
}
else
if (src->is<MAP>()){
dest = dict();
std::string key;
object val;
const MAP &m(src->as<MAP>());
for(MAP::const_iterator itm = m.begin(), itmEnd = m.end();
itm != itmEnd;
++itm){
key = (*itm).first;
insert_simple_object_(val, (*itm).second);
dest[key] = val;
}
}
else
throw python_error("insert_simple_object: object type not in { std::complex<double>, double, long, bool, std::string, object_list, object_map }");
}
template < >
void read_pickle<mere::C, mere::R, mere::Z>
(simple_object_base *&dest, const std::string& filename)
{
using boost::python::extract;
try{
if (!Py_IsInitialized())
Py_Initialize();
// get global namespace;
object main_module = import(const_cast<char*>("__main__"));
object global(main_module.attr(const_cast<char*>("__dict__")));
// evaluate the string in the global namespace:
std::string exec_str(
"import sys\n"
"try:\n"
" import pickle as PK\n"
" infile = open('" + filename + "','rb')\n"
" object = PK.load(infile)\n"
" infile.close()\n"
"except:\n"
" print 'embedded python exception:', sys.exc_info()\n");
exec(exec_str.c_str(), global, global);
object extractable = global["object"];
#if 0
// *** DEBUG ***
exec("obj_str = repr(object)",global,global);
std::string stmp = extract<std::string>(global["obj_str"]);
cout<<"object in embedded interpreter: "<<stmp<<endl;
#endif
extract_simple_object_(dest, extractable);
#if 0 // try this later
Py_Finalize();
#endif
}
catch(error_already_set const &)
{
throw python_error("python_util::read_pickle:");
}
catch (...)
{
cout<<"python_util::read_pickle: unknown python exception: error string:"<<endl;
cout<<" "<<python_error_string()<<endl;
}
}
template < >
void write_pickle<mere::C, mere::R, mere::Z>
(const std::string& filename, const simple_object_base *src)
{
using boost::python::extract;
try{
if (!Py_IsInitialized())
Py_Initialize();
// get global namespace;
object main_module = import(const_cast<char*>("__main__"));
object global(main_module.attr(const_cast<char*>("__dict__")));
// convert simple_object_base to boost::python object:
object src_;
insert_simple_object_(src_, src);
global["object"] = src_;
// get the string-representation and convert to a std::string:
std::string exec_str(
"import sys\n"
"try:\n"
" import pickle as PK\n"
" outfile = open('" + filename + "','wb')\n"
" PK.dump(object, outfile, PK.HIGHEST_PROTOCOL)\n"
" outfile.close()\n"
"except:\n"
" print 'embedded python exception:', sys.exc_info()\n");
exec(exec_str.c_str(),global,global);
#if 0 // try this later
Py_Finalize();
#endif
}
catch(error_already_set const &)
{
throw python_error("write_pickle:");
}
}
#endif
} // namespace implementation_module
} // namespace python_util
// =========================================== end: BOOST::PYTHON version ==============================================================================
#else
// ====================================== python C/API only version ====================================================================================
namespace python_util{
namespace implementation_module{
std::string python_error_string(void)
{
// assume interpreter is initialized:
std::string msg;
try{
if (NULL != PyErr_Occurred()){
// save (and clear) the error indicator:
PyObject *type_save_(NULL), *value_save_(NULL), *traceback_save_(NULL);
// "PyErr_Fetch" returns new refs (any of which may be NULL, but not all):
PyErr_Fetch(&type_save_, &value_save_, &traceback_save_);
// "PyImport_AddModule" returns borrowed ref:
// "PyModule_GetDict" returns borrowed ref:
// borrowed refs to global and local namespace dict:
PyObject
*globals_ = PyModule_GetDict(PyImport_AddModule(const_cast<char*>("__main__"))),
*locals_ = PyEval_GetLocals();
PyObject* rval_(NULL); // return values are usually "None", but I assume the refs are owned.
// re-direct stderr to string-stream:
rval_ = PyRun_String("import sys; import StringIO; stderr_save = sys.stderr; sys.stderr = StringIO.StringIO()", Py_file_input, globals_, locals_);
if (NULL == rval_){
Py_XDECREF(type_save_);
Py_XDECREF(value_save_);
Py_XDECREF(traceback_save_);
throw std::runtime_error("python_error_string: PyRun_String error return"); // throw unexpected...
}
Py_DECREF(rval_);
// restore the error indicator (consumes the refs):
PyErr_Restore(type_save_, value_save_, traceback_save_);
// print the error to the redirected stderr, re-clear the error indicator:
PyErr_Print();
rval_ = PyRun_String("msg_ = sys.stderr.getvalue()", Py_file_input, globals_, locals_);
if (NULL == rval_)
throw std::runtime_error("python_error_string: PyRun_String error return"); // throw unexpected...
Py_DECREF(rval_);
// "PyDict_GetItemString" returns borrowed ref:
PyObject* msg_ = PyDict_GetItemString(globals_, "msg_");
if (NULL == msg_)
throw std::runtime_error("python_error_string: PyDict_GetItemString error return"); // throw unexpected...
msg = extract<std::string>(msg_);
// restore stderr to its original stream:
rval_ = PyRun_String("sys.stderr.close(); sys.stderr = stderr_save", Py_file_input, globals_, locals_);
if (NULL == rval_)
throw std::runtime_error("python_error_string: PyRun_String error return"); // throw unexpected...
Py_DECREF(rval_); // usually "None"
}
else
msg = "python error-state NOT set";
}
catch(const std::runtime_error& x){
msg = "python_error_string: unable to extract error information from python C/API:\n ";
msg += x.what();
}
return msg;
}
void unload_interpreter(void){
if (Py_IsInitialized())
Py_Finalize();
}
// ------------ explicit template specializations: ---------------------------
// -------------- _always_ define double-precision versions: -----------------
template <>
void extract_simple_object<std::complex<double>, double, long>
(simple_object_base *&dest, const std::string& src,
const std::string* ppreamble, const std::string* ppostscript)
{
typedef std::complex<double> C;
typedef double R;
typedef long Z;
try{
if (!Py_IsInitialized()){
Py_Initialize();
#if defined(EMBEDDED_PYTHON) && 0
import_array();
#endif
}
// "PyImport_AddModule" returns borrowed ref:
// "PyModule_GetDict" returns borrowed ref:
// borrowed refs to global and local namespace dict:
PyObject
*globals_ = PyModule_GetDict(PyImport_AddModule(const_cast<char*>("__main__"))),
*locals_ = NULL;
PyObject* rval_(NULL); // return values are usually "None", but I assume the refs are owned.
// evaluate the string[s] in the global namespace:
if (ppreamble != NULL){
rval_ = PyRun_String(ppreamble->c_str(), Py_file_input, globals_, locals_);
if (NULL == rval_)
throw std::runtime_error("extract_simple_object<C,R,Z>: PyRun_String error return");
Py_DECREF(rval_);
}
std::string exec_str(
"try:\n"
" object = " + src + "\n"
"except:\n"
" print 'embedded python exception:', sys.exc_info()\n");
rval_ = PyRun_String(exec_str.c_str(), Py_file_input, globals_, locals_);
if (NULL == rval_)
throw std::runtime_error("extract_simple_object<C,R,Z>: PyRun_String error return");
Py_DECREF(rval_); // usually "None"
if (ppostscript != NULL){
rval_ = PyRun_String(ppostscript->c_str(), Py_file_input, globals_, locals_);
if (NULL == rval_)
throw std::runtime_error("extract_simple_object<C,R,Z>: PyRun_String error return");
Py_DECREF(rval_);
}
// "PyDict_GetItemString" returns borrowed ref:
PyObject* extractable_ = PyDict_GetItemString(globals_, "object");
#if 0
// *** DEBUG ***
rval_ = PyRun_String("obj_str = repr(object)", Py_file_input, globals_, locals_);
if (NULL == rval_)
throw std::runtime_error("extract_simple_object<C,R,Z>: PyRun_String error return");
Py_DECREF(rval_);
std::string stmp = extract<std::string>(PyDict_GetItemString(globals_, "obj_str");
cout<<"object in embedded interpreter: "<<stmp<<endl;
#endif
dest = extract<C,R,Z>(extractable_);
#if 1
Py_Finalize();
#endif
}
catch(const std::runtime_error& x)
{
#if 0
PyErr_Print();
Py_Finalize();
throw x;
#else
msg += ":\n" + python_error_string();
Py_Finalize();
throw x;
#endif
}
}
template <>
void insert_simple_object<std::complex<double>, double, long>
(std::string& dest, const simple_object_base *src)
{
typedef std::complex<double> C;
typedef double R;
typedef long Z;
try{
if (!Py_IsInitialized()){
Py_Initialize();
#if defined(EMBEDDED_PYTHON) && 0
import_array();
#endif
}
// "PyImport_AddModule" returns borrowed ref:
// "PyModule_GetDict" returns borrowed ref:
// borrowed refs to global and local namespace dict:
PyObject
*globals_ = PyModule_GetDict(PyImport_AddModule(const_cast<char*>("__main__"))),
*locals_ = NULL;
PyObject* rval_(NULL); // return values are usually "None", but I assume the refs are owned.
// convert simple_object_base to python object:
PyObject* dest_ = insert<C,R,Z>(src);
// get the string-representation and convert to a std::string:
if (PyDict_SetItemString(globals_, "object", dest_)){
Py_DECREF(dest_);
throw std::runtime_error("insert_simple_object<C,R,Z>: PyDict_SetItemString error return");
}
rval_ = PyRun_String("obj_str = repr(object)", Py_file_input, globals_, locals_);
if (NULL == rval_){
Py_DECREF(dest_);
throw std::runtime_error("insert_simple_object<C,R,Z>: PyRun_String error return");
}
Py_DECREF(rval_);
// borrowed ref to "obj_str":
PyObject* obj_str_ = PyDict_GetItemString(globals_, "obj_str");
if (NULL == obj_str_)
throw std::runtime_error("insert_simple_object<C,R,Z>: PyDict_GetItemString error return");
dest = extract<std::string>(obj_str_);