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dft_tools/pytriqs/wrap_generator/wrapper.mako.cpp
Olivier Parcollet 28a12c7b2f ipython triqs magic v1 
- first version of triqs magic for the notebook
- add add_preamble to the wrap_generator.
2014-06-01 21:00:07 +02:00

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//--------------------- includes and using -------------------------------------
#define TRIQS_PYTHON_WRAPPER_MODULE_${module.name}
%for file in module.include_list :
%if file.startswith('<'):
#include ${file}
%else:
#include "${file}"
%endif
%endfor
using dcomplex = std::complex<double>;
%for ns in module.using:
using ${ns};
%endfor
#include <triqs/python_tools/wrapper_tools.hpp>
#include <triqs/utility/signal_handler.hpp>
using namespace triqs::py_tools;
${module._preamble}
//--------------------- a dict of python function used in the module but not exposed to user (cf init function) ----------------
%if len(module.python_functions) + len(module.hidden_python_functions) > 0 :
static PyObject * _module_hidden_python_function = NULL;
%endif
// We use the order, in the following order (which is necessary for compilation : we need the converters in the implementations)
// - function/method declaration
// - implement type, and all tables
// - implement the converter of types, then of associated regular_type if any.
// - implement functions/method.
//
//----------------------------------------------------------------
//--------------------- function declarations -------------------
//----------------------------------------------------------------
//--------------------- all functions/methods with args, kwds, including constructors -----------------------------
%for py_meth, module_or_class_name, self_c_type in module._all_args_kw_functions() :
static ${'PyObject*' if not py_meth.is_constructor else 'int'} ${module_or_class_name}_${py_meth.py_name}(PyObject *self, PyObject *args, PyObject *keywds);
%endfor
// ------------------------------- Loop on all classes ----------------------------------------------------
%for c in module.classes.values() :
// ----------------------------
// start class : ${c.py_type}
// ----------------------------
//--------------------- all pure python methods -----------------------------
%for f_name, (f,ty,doc) in c.pure_python_methods.items():
static PyObject* ${c.py_type}_${f_name} (PyObject *self, PyObject *args, PyObject *keywds);
%endfor
//--------------------- all members -----------------------------
%for m in c.members:
static PyObject * ${c.py_type}__get_member_${m.py_name} (PyObject *self, void *closure);
%if not m.read_only:
static int ${c.py_type}__set_member_${m.py_name} (PyObject *self, PyObject *value, void *closure);
%endif
%endfor
//--------------------- all properties -----------------------------
%for p in c.properties :
static PyObject * ${c.py_type}__get_prop_${p.name} (PyObject *self, void *closure);
%if p.setter :
static int ${c.py_type}__set_prop_${p.name} (PyObject *self, PyObject *value, void *closure);
%endif
%endfor
//--------------------- [] -----------------------------
%if "__len__impl" in c.methods :
static Py_ssize_t ${c.py_type}___len__(PyObject *self);
%endif
%if "__getitem__impl" in c.methods :
static PyObject* ${c.py_type}___getitem__(PyObject *self, PyObject *key);
%endif
%if "__setitem__impl" in c.methods :
static int ${c.py_type}___setitem__(PyObject *self, PyObject *key, PyObject *v);
%endif
//--------------------- reduce -----------------------------
%if c.serializable == "via_string" :
static PyObject* ${c.py_type}___reduce__ (PyObject *self, PyObject *args, PyObject *keywds);
%endif
//--------------------- reduce version 2 -----------------------------
%if c.serializable == "tuple" :
static PyObject* ${c.py_type}___reduce__ (PyObject *self, PyObject *args, PyObject *keywds);
static PyObject* ${c.py_type}___reduce_reconstructor__ (PyObject *self, PyObject *args, PyObject *keywds);
%endif
//--------------------- hdf5 : write part -----------------------------
static PyObject* ${c.py_type}___write_hdf5__ (PyObject *self, PyObject *args);
//--------------------- repr -----------------------------
%if c.is_printable :
static PyObject* ${c.py_type}___repr__ (PyObject *self);
static PyObject* ${c.py_type}___str__ (PyObject *self);
%endif
//--------------------- Arithmetic declaration only -----------------------------
% for op_name, op in c.number_protocol.items():
%if op.arity == 2:
static PyObject * ${c.py_type}_${op_name} (PyObject* v, PyObject *w);
%elif op.arity ==1:
static PyObject * ${c.py_type}_${op_name} (PyObject *v);
%endif
%endfor
// ----------------------------
// stop class : ${c.py_type}
// ----------------------------
%endfor // cc classes
//----------------------------------------------------------------
//--------------------- implementation --------------------------
//----------------------------------------------------------------
// ------------------------------- Loop on all classes ----------------------------------------------------
%for c in module.classes.values() :
// ----------------------------
// start class : ${c.py_type}
// ----------------------------
//--------------------- define all the types and the converter functions -----------------------------
// the python type
typedef struct {
PyObject_HEAD
${c.c_type} * _c;
} ${c.py_type};
// the new
static PyObject* ${c.py_type}_new(PyTypeObject *type, PyObject *args, PyObject *kwds) {
${c.py_type} *self;
self = (${c.py_type} *)type->tp_alloc(type, 0);
if (self != NULL) {
try {
self->_c = NULL;
##//%if not c.c_type_is_view :
##// self->_c = new ${c.c_type}{};
##//%else :
##// self->_c = new ${c.c_type}{typename ${c.c_type}::regular_type{}}; // no default constructor for views
##//%endif
}
catch (std::exception const & e) {
std::cout << e.what()<<std::endl;
PyErr_SetString(PyExc_RuntimeError, "Default constructor of class ${c.py_type} is throwing an exception !");
return NULL;
}
}
return (PyObject *)self;
}
// dealloc
static void ${c.py_type}_dealloc(${c.py_type}* self) {
if (self->_c != NULL) delete self->_c; // should never be null, but I protect it anyway
self->ob_type->tp_free((PyObject*)self);
}
//--------------------- Iterator by wrapping the C++ -----------------------------
%if c.iterator :
// I used the doc and http://stackoverflow.com/questions/1815812/how-to-create-a-generator-iterator-with-the-python-c-api
// to write this
// the iterator type
typedef struct {
PyObject_HEAD
PyObject * container;
${c.c_type}::${c.iterator.c_type} iter, end;
} ${c.py_type}__iterator;
// dealloc
static void ${c.py_type}__iterator_dealloc(${c.py_type}__iterator * self) {
Py_XDECREF(self->container);
self->ob_type->tp_free((PyObject*)self);
}
// the __iter__ of the iterator type : returns itself
PyObject* ${c.py_type}__iterator__iter__(PyObject *self) {
Py_INCREF(self);
return self;
}
// the next() method of the iterator
PyObject* ${c.py_type}__iterator__iternext__(PyObject *self);
static PyTypeObject ${c.py_type}__iteratorType = {
PyObject_HEAD_INIT(NULL)
0, /*ob_size*/
"${module.name}.${c.py_type}__iterator", /*tp_name*/
sizeof(${c.py_type}__iterator), /*tp_basicsize*/
0, /*tp_itemsize*/
(destructor)${c.py_type}__iterator_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash */
0, /*tp_call*/
0, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_ITER, /* tp_flags: Py_TPFLAGS_HAVE_ITER tells python to use tp_iter and tp_iternext fields. */
"Internal ${c.py_type} iterator object.", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
${c.py_type}__iterator__iter__, /* tp_iter: __iter__() method */
${c.py_type}__iterator__iternext__ /* tp_iternext: next() method */
};
// the __iter__ of the main type: return a new iterator. Need to allocate and init it by hand (no init method).
PyObject* ${c.py_type}___iter__(PyObject *self);
%endif
//--------------------- Register as_number -----------------------------
%if c.number_protocol :
static PyNumberMethods ${c.py_type}_as_number = {
%for op_name in ["add", "subtract", "multiply", "divide", "remainder", "divmod", "power", "negative", "positive", "absolute", "nonzero", "invert", "lshift", "rshift", "and", "xor", "or", "coerce", "int", "long", "float", "oct", "hex", "inplace_add", "inplace_subtract", "inplace_multiply", "inplace_divide", "inplace_remainder", "inplace_power", "inplace_lshift", "inplace_rshift", "inplace_and", "inplace_xor", "inplace_or", "floor_divide ", "true_divide ", "inplace_floor_divide ", "inplace_true_divide ", "index "] :
% if op_name in c.number_protocol and c.number_protocol[op_name].arity==2 :
(binaryfunc)${c.py_type}_${op_name}, /*nb_${op_name}*/
%elif op_name in c.number_protocol and c.number_protocol[op_name].arity==1 :
(unaryfunc)${c.py_type}_${op_name}, /*nb_${op_name}*/
%else :
0, /*nb_${op_name}*/
%endif
%endfor
};
%endif
//--------------------- Register as_mapping -----------------------------
%if c.has_mapping_protocol :
static PyMappingMethods ${c.py_type}_mapping {
%if "__len__impl" in c.methods :
(lenfunc)${c.py_type}___len__, /* mp_length */
%else:
NULL, /* mp_length */
%endif
%if "__getitem__impl" in c.methods :
(binaryfunc)${c.py_type}___getitem__, /* mp_subscript*/
%else:
NULL, /* mp_subscript*/
%endif
%if "__setitem__impl" in c.methods :
(objobjargproc)${c.py_type}___setitem__ /* mp_ass_subscript*/
%else:
NULL /* mp_ass_subscript*/
%endif
};
%endif
//--------------------- Register members and properties -----------------------------
static PyGetSetDef ${c.py_type}_getseters[] = {
%for mb in [m for m in c.members if not m.read_only] :
{"${mb.py_name}", (getter)${c.py_type}__get_member_${mb.py_name}, ${c.py_type}__set_member_${mb.py_name}, "${mb.doc}", NULL},
%endfor
%for mb in [m for m in c.members if m.read_only] :
{"${mb.py_name}", (getter)${c.py_type}__get_member_${mb.py_name}, NULL, "${mb.doc}", NULL},
%endfor
%for p in [p for p in c.properties if p.setter ] :
{"${p.name}", (getter)${c.py_type}__get_prop_${p.name}, ${c.py_type}__set_prop_${p.name}, "${p.doc}", NULL},
%endfor
%for p in [p for p in c.properties if not p.setter ] :
{"${p.name}", (getter)${c.py_type}__get_prop_${p.name}, NULL, "${p.doc}", NULL},
%endfor
{NULL} /* Sentinel */
};
//--------------------- Register the methods for the types -----------------------------
static PyMethodDef ${c.py_type}_methods[] = {
%for meth_name, meth in c.methods.items():
%if not meth_name.startswith('__') :
{"${meth_name}", (PyCFunction)${c.py_type}_${meth_name}, METH_VARARGS| METH_KEYWORDS ${"|METH_STATIC" if meth.is_static else ""}, "${c.methods[meth_name]._generate_doc()}" },
%endif
%endfor
%if c.serializable :
{"__reduce__", (PyCFunction)${c.py_type}___reduce__, METH_VARARGS, "Internal " },
%endif
##%if c.serializable == "tuple" :
## {"__reduce_reconstructor__", (PyCFunction)${c.py_type}___reduce_reconstructor__, METH_VARARGS|METH_STATIC, "Internal " },
##%endif
##%if c.hdf5:
{"__write_hdf5__", (PyCFunction)${c.py_type}___write_hdf5__, METH_VARARGS, "Internal : hdf5 writing via C++ " },
##%endif
%for meth_name, (meth,ty,doc) in c.pure_python_methods.items():
{"${meth_name}", (PyCFunction)${c.py_type}_${meth_name}, METH_VARARGS| METH_KEYWORDS, "${doc}" },
%endfor
{NULL} /* Sentinel */
};
//--------------------- The xxxType table -----------------------------
static PyTypeObject ${c.py_type}Type = {
PyObject_HEAD_INIT(NULL)
0, /*ob_size*/
"${module.full_name}.${c.py_type}", /*tp_name*/
sizeof(${c.py_type}), /*tp_basicsize*/
0, /*tp_itemsize*/
(destructor)${c.py_type}_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
${"&%s___repr__"%c.py_type if c.is_printable else 0}, /*tp_repr*/
${"&%s_as_number"%c.py_type if c.number_protocol else 0}, /*tp_as_number*/
0, /*tp_as_sequence*/
${"&%s_mapping"%c.py_type if c.has_mapping_protocol else 0}, /*tp_as_mapping*/
0, /*tp_hash */
${c.py_type+"___call__" if "__call__" in c.methods else 0}, /*tp_call*/
${"&%s___str__"%c.py_type if c.is_printable else 0}, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |Py_TPFLAGS_CHECKTYPES, /*tp_flags*/
"${c.doc}", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
${c.py_type+"___iter__" if c.iterator else 0}, /* tp_iter */
0, /* tp_iternext */
${c.py_type}_methods, /* tp_methods */
0, /* tp_members */
${c.py_type}_getseters, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
${"(initproc)%s___init__"%c.py_type if c.constructor else 0}, /* tp_init */
0, /* tp_alloc */
${c.py_type}_new, /* tp_new */
};
//--------------------- converters for the class c -----------------------------
namespace triqs { namespace py_tools {
template <> struct py_converter<${c.c_type}> {
template<typename U> static PyObject * c2py(U&& x){
${c.py_type} *self;
self = (${c.py_type} *)${c.py_type}Type.tp_alloc(&${c.py_type}Type, 0);
if (self != NULL) {
self->_c = new ${c.c_type}{std::forward<U>(x)};
}
return (PyObject *)self;
}
static ${c.c_type} & py2c(PyObject * ob){
auto *_c = ((${c.py_type} *)ob)->_c;
if (_c == NULL) TRIQS_RUNTIME_ERROR << "Severe internal error : _c is null in py2c for type ${c.c_type} !";
return *_c;
}
static bool is_convertible(PyObject *ob, bool raise_exception){
if (PyObject_TypeCheck(ob, & ${c.py_type}Type)) {
if (((${c.py_type} *)ob)->_c != NULL) return true;
if (raise_exception) PyErr_SetString(PyExc_TypeError, "Severe internal error : Python object of ${c.py_type} has a _c NULL pointer !!");
return false;
}
if (raise_exception) PyErr_SetString(PyExc_TypeError, "Python object is not a ${c.py_type}");
return false;
}
};
// TO BE MOVED IN GENERAL HPP
%if c.implement_regular_type_converter :
// ${c.py_type} is wrapping a view, we are also implementing the converter of the associated regular type
template<> struct py_converter<${c.regular_type}> {
using regular_type = ${c.regular_type};
using conv = py_converter<${c.c_type}>;
static PyObject *c2py(regular_type &g) { return conv::c2py(g); }
static PyObject *c2py(regular_type &&g) { return conv::c2py(g); }
static bool is_convertible(PyObject * ob, bool raise_exception) { return conv::is_convertible(ob, raise_exception); }
static regular_type py2c(PyObject *ob) { return conv::py2c(ob); }
};
%endif
}} // namespace py_tools
// ----------------------------
// stop class : ${c.py_type}
// ----------------------------
%endfor ## loop on classes
//--------------------- Converters of enums --------------------------
%for en in module.enums :
namespace triqs { namespace py_tools {
template <> struct py_converter<${en.c_name}> {
static PyObject * c2py(${en.c_name} x) {
%for n,val in enumerate(en.values[:-1]) :
if (x == ${val}) return PyString_FromString("${val}");
%endfor
return PyString_FromString("${en.values[-1]}"); // last case separate to avoid no return warning of compiler
}
static ${en.c_name} py2c(PyObject * ob){
std::string s=PyString_AsString(ob);
%for n,val in enumerate(en.values[:-1]) :
if (s == "${val}") return ${val};
%endfor
return ${en.values[-1]};
}
static bool is_convertible(PyObject *ob, bool raise_exception) {
if (!PyString_Check(ob)) {
if (raise_exception) PyErr_SetString(PyExc_ValueError, "Convertion of C++ enum ${en.c_name} : the object is not a string");
return false;
}
std::string s=PyString_AsString(ob);
%for n,val in enumerate(en.values) :
if (s == "${val}") return true;
%endfor
if (raise_exception) {
auto err = "Convertion of C++ enum ${en.c_name} : \nThe string \"" + s +"\" is not in [${','.join([str(x) for x in en.values])}]";
PyErr_SetString(PyExc_ValueError, err.c_str());
}
return false;
}
};
}}
%endfor
//--------------------- Parser auxiliary functions for PyArg_ParseTupleAndKeywords --------------------------
// adapter needed for parsing with PyArg_ParseTupleAndKeywords later in the functions
// We need several slighly different version for
// - wrapped types : we handle them by pointer
// - non wrapped_type : by value
// - view : needs to be rebinded, not assigned.
// Selection of the converter for each type is done later, Cf _get_proper_converter.
// take the object a pointer to the place into which convert the object.
// return 1 (success), 0 (failure). If fails, also set the python exception which will be analyzed later.
template<typename T>
static int converter_for_parser_non_wrapped_type(PyObject * ob, T * p) {
if (!convertible_from_python<T>(ob,true)) return 0;
*p = convert_from_python<T>(ob);
return 1;
}
template<typename T>
static int converter_for_parser_wrapped_type(PyObject * ob, T ** p) {
if (!convertible_from_python<T>(ob,true)) return 0;
*p = &(convert_from_python<T>(ob)); // wrapped types are manipulated by pointers.
return 1;
}
template<typename T>
static int converter_for_parser_view_type(PyObject * ob, T * p) {
if (!convertible_from_python<T>(ob,true)) return 0;
p->rebind(convert_from_python<T>(ob));
return 1;
}
//--------------------- define all functions/methods with args, kwds, including constructors -----------------------------
%for py_meth, module_or_class_name, self_c_type in module._all_args_kw_functions() :
static ${'PyObject*' if not py_meth.is_constructor else 'int'} ${module_or_class_name}_${py_meth.py_name}(PyObject *self, PyObject *args, PyObject *keywds) {
<%
n_overload = len(py_meth.overloads)
has_overloads = (n_overload>1)
%>
%if not py_meth.is_constructor :
PyObject * py_result; //final result
%endif
%if has_overloads :
PyObject * errors[${n_overload}] = {${",".join(n_overload*['NULL'])}}; //errors of the parsing attempts...
%endif
%if py_meth.python_precall :
pyref res_py; // the intermediate result of the pretreatment
// get the module where the function is
static pyref module = pyref::module("${py_meth.python_precall.rsplit('.',1)[0]}");
if (module.is_null()) goto error_return;
// get the function (only once)
static pyref py_fnt = module.attr("${py_meth.python_precall.rsplit('.',1)[1]}");
// call the function : return must be a tuple args, kw to replace the current args, kw
res_py = PyObject_Call(py_fnt, args, keywds);
if (PyErr_Occurred()) goto error_return;
if (!PyTuple_Check(res_py) || (PyTuple_Size(res_py)!=2))
{ PyErr_SetString(PyExc_RuntimeError,"${py_meth.python_precall} must return a tuple (args,kw) "); goto error_return; }
args = PyTuple_GetItem(res_py,0);
keywds = PyTuple_GetItem(res_py,1); // Borrowed ref, Cf res_py comment above.
if (!PyTuple_Check(args)) { PyErr_SetString(PyExc_RuntimeError,"${py_meth.python_precall}: return error : first element must be a tuple of arguments"); goto error_return; }
if (!PyDict_Check(keywds)) { PyErr_SetString(PyExc_RuntimeError,"${py_meth.python_precall}: return error : second element must be a dict"); goto error_return; }
%endif
// If no overload, we avoid the err_list and let the error go through (to save some code).
%for n_overload, overload in enumerate(py_meth.overloads) :
{// overload ${overload._get_c_signature()}
// define the variable to be filled by the parsing method
// wrapped types are converted to a pointer, other converted types to a value or a view
%for t,n,d in overload.args :
%if t in module._wrapped_types :
${t}* ${n} = NULL; // ${t} is a wrapped type
%elif is_type_a_view(t):
${t} ${n} = typename ${t}::regular_type{}; // ${t} is a view, but not wrapped
%else:
${t} ${n} ${'=%s'%d if d else ''}; // ${t} is a regular type
%endif
%endfor
static char *kwlist[] = {${",".join([ '"%s"'%n for t,n,d in overload.args] + ["NULL"])}};
static const char * format = "${overload._parsing_format()}";
if (PyArg_ParseTupleAndKeywords(args, keywds, format, kwlist ${"".join([ module._get_proper_converter(t) + ' ,&%s'%n for t,n,d in overload.args])})) {
%if overload.is_method and not overload.is_constructor and not overload.no_self_c and not overload.is_static :
auto & self_c = convert_from_python<${self_c_type}>(self);
%endif
%if overload.is_static :
using self_class = ${self_c_type};
%endif
try {
%if overload.release_GIL_and_enable_signal :
PyOS_sighandler_t sig = PyOS_getsig(SIGINT);
triqs::signal_handler::start(); // start the C++ signal handler
Py_BEGIN_ALLOW_THREADS;
try {
%endif
${overload._get_calling_pattern()}; // the call is here. It sets up "result" : sets up in the python layer.
%if overload.release_GIL_and_enable_signal :
}
catch(...) {
// an error has occurred : clean GIL, handler and rethrow
Py_BLOCK_THREADS; // cf python include, ceval.h, line 72 comments and below.
triqs::signal_handler::stop(); // stop the C++ signal handler
PyOS_setsig(SIGINT, sig);
throw; //
}
Py_END_ALLOW_THREADS;
triqs::signal_handler::stop();
PyOS_setsig(SIGINT, sig);
%endif
%if not overload.is_constructor :
%if overload.rtype != "void" :
py_result = convert_to_python(std::move(result));
%else:
Py_INCREF(Py_None);
py_result = Py_None;
%endif
%endif
goto post_treatment; // eject, computation is done
}
%if not py_meth.is_constructor:
CATCH_AND_RETURN("calling C++ overload \n ${overload._get_c_signature()} \nin implementation of ${'method' if py_meth.is_method else 'function'} ${module_or_class_name}.${py_meth.py_name}", NULL);
%else:
CATCH_AND_RETURN ("in calling C++ overload of constructor :\n${overload._get_c_signature()}",-1);
%endif
}
%if has_overloads :
else { // the overload does not parse the arguments. Keep the error set by python, for later use, and clear it.
PyObject * ptype, *ptraceback; // unused.
PyErr_Fetch(&ptype, &errors[${n_overload}], &ptraceback);
Py_XDECREF(ptype); Py_XDECREF(ptraceback);
}
%endif
} // end overload ${overload._get_c_signature()}
%endfor # overload
%if has_overloads :
// finally, no overload was successful. Composing a detailed error message, with the reason of failure of all overload !
{
std::string err_list = "Error: no suitable C++ overload found in implementation of ${'method' if py_meth.is_method else 'function'} ${module_or_class_name}.${py_meth.py_name}\n";
%for n_overload, overload in enumerate(py_meth.overloads) :
err_list += "\n ${overload._get_c_signature()} \n failed with the error : \n ";
if (errors[${n_overload}])err_list += PyString_AsString(errors[${n_overload}]);
err_list +="\n";
Py_XDECREF(errors[${n_overload}]);
%endfor
PyErr_SetString(PyExc_TypeError,err_list.c_str());
}
%endif
goto error_return;
post_treatment:
%if py_meth.python_postcall :
if (py_result) { // should always be true
static pyref module2 = pyref::module("${py_meth.python_postcall.rsplit('.',1)[0]}");
static pyref py_fnt2 = module.attr("${py_meth.python_postcall.rsplit('.',1)[1]}");
PyObject * res_final = PyObject_CallFunctionObjArgs(py_fnt2, py_result, NULL);
Py_XDECREF(py_result);
py_result = res_final; // stealing the ref
}
%endif
return ${'py_result' if not py_meth.is_constructor else '0'};
error_return :
return ${'NULL' if not py_meth.is_constructor else '-1'};
}
%endfor
// ------------------------------- Loop on all classes ----------------------------------------------------
%for c in module.classes.values() :
//--------------------- define all pure python methods -----------------------------
// The methods called from an external module
%for f_name, (f,ty,doc) in c.pure_python_methods.items():
%if ty=='module':
static PyObject* ${c.py_type}_${f_name} (PyObject *self, PyObject *args, PyObject *keywds) {
static pyref module = pyref::module("${f.module}");
if (module.is_null()) {
PyErr_SetString(PyExc_ImportError,"Can not import module ${f.module}");
return NULL;
}
static pyref py_fnt = module.attr("${f.py_name}");
if (py_fnt.is_null()) {
PyErr_SetString(PyExc_ImportError,"Can not import function ${f.py_name} in module ${f.module}");
return NULL;
}
pyref args2 = PySequence_Concat(PyTuple_Pack(1,self),args);
PyObject * ret = PyObject_Call(py_fnt, args2,keywds);
return ret;
}
%else :
// The methods with inline code in the module
static PyObject* ${c.py_type}_${f_name} (PyObject *self, PyObject *args, PyObject *keywds) {
pyref args2 = PySequence_Concat(PyTuple_Pack(1,self),args);
PyObject * ret = PyObject_Call(PyDict_GetItemString(PyModule_GetDict(_module_hidden_python_function),"${f}"), args2, keywds);
return ret;
}
%endif
%endfor
//--------------------- define all members -----------------------------
%for m in c.members:
static PyObject * ${c.py_type}__get_member_${m.py_name} (PyObject *self, void *closure) {
auto & self_c = convert_from_python<${c.c_type}>(self);
return convert_to_python(self_c.${m.c_name});
}
%if not m.read_only:
static int ${c.py_type}__set_member_${m.py_name} (PyObject *self, PyObject *value, void *closure) {
if (value == NULL) { PyErr_SetString(PyExc_TypeError, "Cannot delete the attribute ${m.py_name}"); return -1; }
if (!convertible_from_python<${m.c_type}>(value, true)) return -1;// exception is set by the converter
auto & self_c = convert_from_python<${c.c_type}>(self);
try {
self_c.${m.c_name} = convert_from_python<${m.c_type}>(value);
}
CATCH_AND_RETURN("in setting the attribute '${m.py_name}'",-1);
return 0;
}
%endif
%endfor ## c.members
//--------------------- define all properties -----------------------------
%for p in c.properties :
static PyObject * ${c.py_type}__get_prop_${p.name} (PyObject *self, void *closure) {
%if isinstance(p.getter, str):
// pure python call
static pyref py_fnt = pyref::module("${p.getter.rsplit('.',1)[0]}").attr("${p.getter.rsplit('.',1)[1]}");
return py_fnt(self).new_ref();
%else:
auto & self_c = convert_from_python<${c.c_type}>(self);
${p.getter._get_calling_pattern()}; // defines result, which can not be void (property would return None ??)
return convert_to_python(result);
%endif
}
%if p.setter :
static int ${c.py_type}__set_prop_${p.name} (PyObject *self, PyObject *value, void *closure) {
if (value == NULL) { PyErr_SetString(PyExc_AttributeError, "Cannot delete the attribute ${p.name}"); return -1; }
if (!convertible_from_python<${p.setter.args[0][0]}>(value, true)) return -1;
auto & self_c = convert_from_python<${c.c_type}>(self);
try {
self_c.${p.setter.c_name} (convert_from_python<${p.setter.args[0][0]}>(value));
}
CATCH_AND_RETURN("in setting the attribute '${m.py_name}'",-1);
return 0;
}
%endif
%endfor ## c.properties
//--------------------- [] implementation -----------------------------
%if "__len__impl" in c.methods :
static Py_ssize_t ${c.py_type}___len__(PyObject *self) {
auto & self_c = convert_from_python<${c.c_type}>(self);
try {
${c.methods['__len__impl'].overloads[0]._get_calling_pattern()};
return result;
}
CATCH_AND_RETURN("in calling C++ function for __len__ :\n${overload._get_c_signature()}", -1);
}
%endif
// The __getitem__impl has been implemented with other methods. We redirect the call to the general for (args, kw)
// after rebuilding args.
%if "__getitem__impl" in c.methods :
static PyObject* ${c.py_type}___getitem__(PyObject *self, PyObject *key) {
pyref args = (PyTuple_Check(key) ? borrowed(key) : pyref(PyTuple_Pack(1,key)));
return ${c.py_type}___getitem__impl(self,args,NULL);
}
%endif
%if "__setitem__impl" in c.methods :
static int ${c.py_type}___setitem__(PyObject *self, PyObject *key, PyObject *v) {
pyref args = (PyTuple_Check(key) ? borrowed(key) : pyref(PyTuple_Pack(1,key)));
pyref args2 = PySequence_Concat(args, PyTuple_Pack(1,v));
pyref res = ${c.py_type}___setitem__impl(self,args2,NULL);
return (res.is_null() ? -1 : 0); // the function will return None, we want to change to an int
}
%endif
//--------------------- reduce -----------------------------
%if c.serializable == "via_string" :
// we make the unserialize function using the convertion of a C++ lambda !
static PyObject* ${c.py_type}___reduce__ (PyObject *self, PyObject *args, PyObject *keywds) {
static PyObject* pyfoo = NULL; // never need to decref it, it is static
if (!pyfoo) {
auto lambda = [](std::string const &s) -> PyObject *{
try {
%if not c.c_type_is_view :
return convert_to_python( triqs::deserialize<${c.c_type}>(s));
%else:
return convert_to_python( ${c.c_type} ( triqs::deserialize<typename ${c.c_type}::regular_type>(s)));
%endif
}
CATCH_AND_RETURN("in boost unserialization of object ${c.py_type}",NULL);
};
pyfoo = convert_to_python(std::function<PyObject *(std::string)>{lambda}); // new ref
}
auto & self_c = convert_from_python<${c.c_type}>(self);
return Py_BuildValue("(Os)",pyfoo, triqs::serialize(self_c).c_str()); // pyfoo ref ++ by Py_BuildValue
}
%endif
//--------------------- reduce version 2 -----------------------------
%if c.serializable == "tuple" :
// we make the unserialize function using the convertion of a C++ lambda !
static PyObject* ${c.py_type}___reduce__ (PyObject *self, PyObject *args, PyObject *keywds) {
auto & self_c = convert_from_python<${c.c_type}>(self);
pyref r = pyref::module("${module.full_name}").attr("__reduce_reconstructor__${c.py_type}");
if (r.is_null()) {
PyErr_SetString(PyExc_ImportError,
"Can not find the reconstruction function ${module.full_name}.__reduce_reconstructor__${c.py_type}");
return NULL;
}
return Py_BuildValue("(NN)", r.new_ref() , reductor{}.apply_to(self_c)); // pyfoo ref ++ by Py_BuildValue
//return Py_BuildValue("(NN)", borrowed(self).attr("__class__").attr("__module__").attr("__reduce_reconstructor__").new_ref(), reductor{}.apply_to(self_c)); // pyfoo ref ++ by Py_BuildValue
}
//
static PyObject* ${c.py_type}___reduce_reconstructor__ (PyObject *self, PyObject *args, PyObject *keywds) {
try {
%if not c.c_type_is_view :
${c.c_type} result;
%else:
typename ${c.c_type}::regular_type result;
%endif
auto r = reconstructor{args};
result.serialize(r,0);// make sure reconstructor is a friend as boost::serialization::access
return convert_to_python(std::move(result));
}
CATCH_AND_RETURN("in boost unserialization of object ${c.py_type}",NULL);
}
%endif
//--------------------- repr -----------------------------
%if c.is_printable :
static PyObject* ${c.py_type}___repr__ (PyObject *self) {
auto & self_c = convert_from_python<${c.c_type}>(self);
std::stringstream fs; fs << self_c;
return PyString_FromString(fs.str().c_str());
}
static PyObject* ${c.py_type}___str__ (PyObject *self) {
auto & self_c = convert_from_python<${c.c_type}>(self);
std::stringstream fs; fs << self_c;
return PyString_FromString(fs.str().c_str());
}
%endif
//--------------------- hdf5 : write part -----------------------------
%if not c.hdf5 :
/// hdf5 is not defined for this object, we still but a function + exception for a clear and early error message.
static PyObject* ${c.py_type}___write_hdf5__ (PyObject *self, PyObject *args) {
PyErr_SetString(PyExc_NotImplementedError, "No hdf5 support for the object ${c.py_type}");
return NULL;
}
%else:
static PyObject* ${c.py_type}___write_hdf5__ (PyObject *self, PyObject *args) {
triqs::h5::group gr;
const char * key;
if (!PyArg_ParseTuple(args, "O&s", converter_for_parser_non_wrapped_type<triqs::h5::group>, &gr, &key)) return NULL;
auto & self_c = convert_from_python<${c.c_type}>(self);
try {
h5_write(gr, key, self_c);
}
CATCH_AND_RETURN("in h5 writing of object ${c.py_type}",NULL);
Py_RETURN_NONE;
}
// Make the reader function for the type and register it in the hdf archive module
// This function is called once in the module init function
static void register_h5_reader_for_${c.py_type} () {
auto reader = [] (PyObject * h5_gr, std::string const & name) -> PyObject *{
auto gr = convert_from_python<triqs::h5::group>(h5_gr);
// declare the target C++ object, with special case if it is a view...
%if not c.c_type_is_view :
${c.c_type} ret;
%else:
typename ${c.c_type}::regular_type ret;
%endif
try { // now read
h5_read (gr, name, ret);
}
CATCH_AND_RETURN("in h5 reading of object ${c.py_type}", NULL);
return convert_to_python(${c.c_type}(std::move(ret))); // cover the view and value case
}; // end reader lambda
pyref h5_reader = convert_to_python(std::function<PyObject*(PyObject *, std::string)> (reader));
pyref module = pyref::module("pytriqs.archive.hdf_archive_schemes");
auto register_class = module.attr("register_class");
pyref res = PyObject_CallFunctionObjArgs(register_class, (PyObject*)(&${c.py_type}Type), Py_None, (PyObject*)h5_reader, NULL);
//pyref res = PyObject_CallFunction(register_class, "OOO", (PyObject*)(&${c.py_type}Type), Py_None, (PyObject*)h5_reader);
}
%endif
//--------------------- Arithmetic implementation -----------------------------
// IMPROVE ERROR TREATEMENT LIKE OTHER ORDINARY METHODS
% for op_name, op in c.number_protocol.items():
%if op.arity == 2:
static PyObject * ${c.py_type}_${op_name} (PyObject* v, PyObject *w){
%if op.python_precall :
// get the function to call
static pyref py_fnt = pyref::module("${op.python_precall.rsplit('.',1)[0]}").attr("${op.python_precall.rsplit('.',1)[1]}");
// call the function : return must be a tuple args, kw to replace the current args, kw
pyref res = py_fnt(v,w);
if (!res.is_None()) return res.new_ref(); // new ref or NULL
// otherwise the precall has failed to make the operation, proceed with the overloads
%endif
%for overload in op.overloads :
if (convertible_from_python<${overload.args[0][0]}>(v,false) && convertible_from_python<${overload.args[1][0]}>(w,false)) {
try {
${regular_type_if_view_else_type(overload.rtype)} r = convert_from_python<${overload.args[0][0]}>(v) ${overload._get_calling_pattern()} convert_from_python<${overload.args[1][0]}>(w);
return convert_to_python(std::move(r)); // in two steps to force type for expression templates in C++
}
CATCH_AND_RETURN("in calling C++ overload \n ${overload._get_c_signature()} \nin implementation of operator ${overload._get_calling_pattern()} ", NULL)
}
%endfor
PyErr_SetString(PyExc_RuntimeError,"Error: no C++ overload found in implementation of operator ${overload._get_calling_pattern()} ");
return NULL;
}
%elif op.arity == 1:
static PyObject * ${c.py_type}_${op_name} (PyObject *v){
%for overload in op.overloads :
if (py_converter<${overload.args[0][0]}>::is_convertible(v,false)) {
try {
${regular_type_if_view_else_type(overload.rtype)} r = ${overload._get_calling_pattern()}(convert_from_python<${overload.args[0][0]}>(v));
return convert_to_python(std::move(r)); // in two steps to force type for expression templates in C++
}
CATCH_AND_RETURN("in calling C++ overload \n ${overload._get_c_signature()} \nin implementation of operator ${overload._get_calling_pattern()} ", NULL)
}
%endfor
PyErr_SetString(PyExc_RuntimeError,"Error: no C++ overload found in implementation of operator ${overload._get_calling_pattern()} ");
return NULL;
}
%endif
%endfor
//--------------------- Implementation of iterator by wrapping the C++ -----------------------------
%if c.iterator :
// the next() method of the iterator
PyObject* ${c.py_type}__iterator__iternext__(PyObject *self) {
auto * self_c = (${c.py_type}__iterator *)self;
if (self_c->iter != self_c->end) {
%if c.iterator.c_cast_type:
PyObject *res = convert_to_python((${c.iterator.c_cast_type})(*(self_c->iter)));// make a COPY, I can not wrap a ref in python !
%else:
PyObject *res = convert_to_python(*(self_c->iter));// make a COPY, I can not wrap a ref in python !
%endif
++self_c->iter;
return res;
} else {
PyErr_SetNone(PyExc_StopIteration);
return NULL;
}
}
// the __iter__ of the main type: return a new iterator. Need to allocate and init it by hand (no init method).
PyObject* ${c.py_type}___iter__(PyObject *self) {
auto & self_c = convert_from_python<${c.c_type}>(self);
auto * p = PyObject_New(${c.py_type}__iterator, &${c.py_type}__iteratorType);
if (!p) return NULL;
p->container = self;
Py_INCREF(self); // We keep an owned reference to the container object (e.g. [x for x in g.mesh], if the container is a temporary and the iterator lives longer than its python reference).
p->iter = ${c.iterator.begin}(self_c);
p->end = ${c.iterator.end}(self_c);
return (PyObject *)p;
}
%endif
%endfor ## Big loop on classes c
//------------------------------------------------------------------------
//--------------------- MODULE --------- -----------------------------
//------------------------------------------------------------------------
//--------------------- module function table -----------------------------
// the table of the function of the module...
static PyMethodDef module_methods[] = {
%for pyf in module.functions.values():
{"${pyf.py_name}", (PyCFunction)${module.name}_${pyf.py_name}, METH_VARARGS| METH_KEYWORDS, "${pyf._generate_doc()}"},
%endfor
%for c in module.classes.values() :
%if c.serializable == "tuple" :
{"__reduce_reconstructor__${c.py_type}", (PyCFunction)${c.py_type}___reduce_reconstructor__, METH_VARARGS, "Internal " },
%endif
%endfor
{NULL} /* Sentinel */
};
//--------------------- module init function -----------------------------
// The code of all module python functions
%for f in module.python_functions.values() :
static const char * _module_python_function_code_${f.name} =
${f.code};
%endfor
%for f in module.hidden_python_functions.values() :
static const char * _module_hidden_python_function_code_${f.name} =
${f.code};
%endfor
#ifndef PyMODINIT_FUNC /* declarations for DLL import/export */
#define PyMODINIT_FUNC void
#endif
PyMODINIT_FUNC
init${module.name}(void)
{
PyObject* m;
%for c in module.classes.values() :
if (PyType_Ready(&${c.py_type}Type) < 0) return;
%if c.iterator :
// initializing the ${c.py_type}__iterator
${c.py_type}__iteratorType.tp_new = PyType_GenericNew;
if (PyType_Ready(&${c.py_type}__iteratorType) < 0) return;
Py_INCREF(&${c.py_type}__iteratorType);
%endif
%endfor
m = Py_InitModule3("${module.name}", module_methods, "${module.doc}");
if (m == NULL) return;
%for c in module.classes.values() :
Py_INCREF(&${c.py_type}Type);
PyModule_AddObject(m, "${c.py_type}", (PyObject *)&${c.py_type}Type);
%endfor
// hdf5 registration
%for c in [c for c in module.classes.values() if c.hdf5]:
register_h5_reader_for_${c.py_type}();
%endfor
%if len(module.classes) >0 :
// declare the exported wrapper functions
static void * _exported_wrapped_convert_fnt[3*${len(module.classes)}];
// init the array with the function pointers
%for n,c in enumerate(module.classes.values()) :
_exported_wrapped_convert_fnt[3*${n}] = (void *)convert_to_python<${c.c_type_absolute}>;
_exported_wrapped_convert_fnt[3*${n}+1] = (void *)convert_from_python<${c.c_type_absolute}>;
_exported_wrapped_convert_fnt[3*${n}+2] = (void *)convertible_from_python<${c.c_type_absolute}>;
%endfor
/* Create a Capsule containing the API pointer array's address */
PyObject *c_api_object = PyCapsule_New((void *)_exported_wrapped_convert_fnt, "${module.full_name}._exported_wrapper_convert_fnt", NULL);
if (c_api_object != NULL) PyModule_AddObject(m, "_exported_wrapper_convert_fnt", c_api_object);
%endif
%if len(module.python_functions) + len(module.hidden_python_functions) > 0 :
PyObject* main_module = PyImport_AddModule("__main__"); //borrowed
PyObject* global_dict = PyModule_GetDict(main_module); //borrowed
// load and compile the module function defined in pure python
%for f in module.python_functions.values() :
if (!PyRun_String( _module_python_function_code_${f.name},Py_file_input, global_dict, PyModule_GetDict(m) )) return;
%endfor
// now the hidden python function ...
_module_hidden_python_function = PyModule_New("hidden_functions");
// if we wish to still see the functions...
PyModule_AddObject(m, "__hidden_fnt", _module_hidden_python_function);
PyObject * d = PyModule_GetDict(_module_hidden_python_function); //borrowed
%for f in module.hidden_python_functions.values() :
if (!PyRun_String( _module_hidden_python_function_code_${f.name}, Py_file_input, global_dict ,d)) return;
%endfor
%endif
}
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