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python_embed: managed to pass arguments to base constructor

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Ciro Santilli 六四事件 法轮功
2020-02-25 00:00:02 +00:00
parent 721980c4e2
commit 7c6bb29bc8
3 changed files with 35 additions and 28 deletions
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18
userland/libs/python_embed/pure.c
View File

@@ -254,13 +254,16 @@ my_native_module_MyDerivedNativeClass_init(my_native_module_MyDerivedNativeClass
{ {
static char *kwlist[] = {"first", "last", "number", "first2", "last2", "number2", NULL}; static char *kwlist[] = {"first", "last", "number", "first2", "last2", "number2", NULL};
PyObject *first = NULL, *last = NULL, *first2 = NULL, *last2 = NULL, *tmp; PyObject *first = NULL, *last = NULL, *first2 = NULL, *last2 = NULL, *tmp;
int number; int ret;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|OOiOOi", kwlist, if (!PyArg_ParseTupleAndKeywords(args, kwds, "|OOOOOi", kwlist,
&first, &last, &number, &first2, &last2, &self->number2)) &first, &last, &tmp, &first2, &last2, &self->number2))
return -1; return -1;
/* Call parent class constructor. TODO learn how to remove the /* args is a PyTuple, extract the first 3 arguments into a new
* "*2" args that are consumed by this constructor.. */ * tuple to serve as arguments of the base class. */
if (my_native_module_MyNativeClassType.tp_init((PyObject *) self, args, kwds) < 0) PyObject *base_args = PySequence_GetSlice(args, 0, 3);
ret = my_native_module_MyNativeClassType.tp_init((PyObject *) self, base_args, kwds);
Py_DECREF(base_args);
if (ret < 0)
return -1; return -1;
if (first2) { if (first2) {
tmp = self->first2; tmp = self->first2;
@@ -306,7 +309,8 @@ my_native_module_MyDerivedNativeClass_name2(my_native_module_MyDerivedNativeClas
PyErr_SetString(PyExc_AttributeError, "last2"); PyErr_SetString(PyExc_AttributeError, "last2");
return NULL; return NULL;
} }
return PyUnicode_FromFormat("%S %S %S %S", self->base.first, self->base.last, self->first2, self->last2); return PyUnicode_FromFormat("%S %S %S %S",
self->base.first, self->base.last, self->first2, self->last2);
} }
static PyMethodDef my_native_module_MyDerivedNativeClass_methods[] = { static PyMethodDef my_native_module_MyDerivedNativeClass_methods[] = {

6
userland/libs/python_embed/pure.py
View File

@@ -23,7 +23,7 @@ def test_native_class():
my_native_object.first = 'ih' my_native_object.first = 'ih'
assert my_native_object.name() == 'ih ' assert my_native_object.name() == 'ih '
# TODO see TODO in pure.c. my_derived_native_object = my_native_module.MyDerivedNativeClass('ab', 'cd', 13, 'ef', 'gh', 21)
#my_derived_native_object = my_native_module.MyDerivedNativeClass('ab', 'cd', 13, 'ef', 'gh', 21) assert my_derived_native_object.name() == 'ab cd'
#print(my_derived_native_object.name2()) assert my_derived_native_object.name2() == 'ab cd ef gh'
return 13 return 13

39
userland/libs/python_embed/pure_cpp.cpp
View File

@@ -137,12 +137,12 @@ my_native_module_MyNativeClass_init(my_native_module_MyNativeClass *self, PyObje
} }
static PyMemberDef my_native_module_MyNativeClass_members[] = { static PyMemberDef my_native_module_MyNativeClass_members[] = {
{"first", T_OBJECT_EX, offsetof(my_native_module_MyNativeClass, first), 0, {(char*)"first", T_OBJECT_EX, offsetof(my_native_module_MyNativeClass, first), 0,
"first name"}, (char*)"first name"},
{"last", T_OBJECT_EX, offsetof(my_native_module_MyNativeClass, last), 0, {(char*)"last", T_OBJECT_EX, offsetof(my_native_module_MyNativeClass, last), 0,
"last name"}, (char*)"last name"},
{"number", T_INT, offsetof(my_native_module_MyNativeClass, number), 0, {(char*)"number", T_INT, offsetof(my_native_module_MyNativeClass, number), 0,
"custom number"}, (char*)"custom number"},
{NULL} {NULL}
}; };
@@ -232,13 +232,16 @@ my_native_module_MyDerivedNativeClass_init(my_native_module_MyDerivedNativeClass
{ {
static const char *kwlist[] = {"first", "last", "number", "first2", "last2", "number2", NULL}; static const char *kwlist[] = {"first", "last", "number", "first2", "last2", "number2", NULL};
PyObject *first = NULL, *last = NULL, *first2 = NULL, *last2 = NULL, *tmp; PyObject *first = NULL, *last = NULL, *first2 = NULL, *last2 = NULL, *tmp;
int number; int ret;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|OOiOOi", (char**)kwlist, if (!PyArg_ParseTupleAndKeywords(args, kwds, "|OOOOOi", (char**)kwlist,
&first, &last, &number, &first2, &last2, &self->number2)) &first, &last, &tmp, &first2, &last2, &self->number2))
return -1; return -1;
/* Call parent class constructor. TODO learn how to remove the /* args is a PyTuple, extract the first 3 arguments into a new
* "*2" args that are consumed by this constructor.. */ * tuple to serve as arguments of the base class. */
if (my_native_module_MyNativeClassType.tp_init((PyObject *) self, args, kwds) < 0) PyObject *base_args = PySequence_GetSlice(args, 0, 3);
ret = my_native_module_MyNativeClassType.tp_init((PyObject *) self, base_args, kwds);
Py_DECREF(base_args);
if (ret < 0)
return -1; return -1;
if (first2) { if (first2) {
tmp = self->first2; tmp = self->first2;
@@ -256,12 +259,12 @@ my_native_module_MyDerivedNativeClass_init(my_native_module_MyDerivedNativeClass
} }
static PyMemberDef my_native_module_MyDerivedNativeClass_members[] = { static PyMemberDef my_native_module_MyDerivedNativeClass_members[] = {
{"first2", T_OBJECT_EX, offsetof(my_native_module_MyDerivedNativeClass, first2), 0, {(char*)"first2", T_OBJECT_EX, offsetof(my_native_module_MyDerivedNativeClass, first2), 0,
"first2 name2"}, (char*)"first2 name2"},
{"last2", T_OBJECT_EX, offsetof(my_native_module_MyDerivedNativeClass, last2), 0, {(char*)"last2", T_OBJECT_EX, offsetof(my_native_module_MyDerivedNativeClass, last2), 0,
"last2 name2"}, (char*)"last2 name2"},
{"number2", T_INT, offsetof(my_native_module_MyDerivedNativeClass, number2), 0, {(char*)"number2", T_INT, offsetof(my_native_module_MyDerivedNativeClass, number2), 0,
"custom number2"}, (char*)"custom number2"},
{NULL} {NULL}
}; };