cpython/Modules/_testmultiphase.c at pythoncapi · pythoncapi/cpython · GitHub

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/* Testing module for multi-phase initialization of extension modules (PEP 489)

#include "Python.h"

/* Example objects */

typedef struct {

PyObject_HEAD

PyObject *x_attr; /* Attributes dictionary */

} ExampleObject;

typedef struct {

PyObject *integer;

} testmultiphase_state;

/* Example methods */

static int

Example_traverse(ExampleObject *self, visitproc visit, void *arg)

{

Py_VISIT(self->x_attr);

return 0;

}

static void

Example_finalize(ExampleObject *self)

{

Py_CLEAR(self->x_attr);

}

static PyObject *

Example_demo(ExampleObject *self, PyObject *args)

{

PyObject *o = NULL;

if (!PyArg_ParseTuple(args, "|O:demo", &o))

return NULL;

if (o != NULL && PyUnicode_Check(o)) {

Py_INCREF(o);

return o;

}

Py_RETURN_NONE;

}

static PyMethodDef Example_methods[] = {

{"demo", (PyCFunction)Example_demo, METH_VARARGS,

PyDoc_STR("demo() -> None")},

{NULL, NULL} /* sentinel */

};

static PyObject *

Example_getattro(ExampleObject *self, PyObject *name)

{

if (self->x_attr != NULL) {

PyObject *v = PyDict_GetItemRef(self->x_attr, name);

if (v != NULL) {

return v;

}

return PyObject_GenericGetAttr((PyObject *)self, name);

}

static int

Example_setattr(ExampleObject *self, const char *name, PyObject *v)

{

if (self->x_attr == NULL) {

self->x_attr = PyDict_New();

if (self->x_attr == NULL)

return -1;

}

if (v == NULL) {

int rv = PyDict_DelItemString(self->x_attr, name);

if (rv < 0)

PyErr_SetString(PyExc_AttributeError,

"delete non-existing Example attribute");

return rv;

}

else

return PyDict_SetItemString(self->x_attr, name, v);

}

static PyType_Slot Example_Type_slots[] = {

{Py_tp_doc, "The Example type"},

{Py_tp_finalize, Example_finalize},

{Py_tp_traverse, Example_traverse},

{Py_tp_getattro, Example_getattro},

{Py_tp_setattr, Example_setattr},

{Py_tp_methods, Example_methods},

{0, 0},

};

static PyType_Spec Example_Type_spec = {

"_testimportexec.Example",

sizeof(ExampleObject),

Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_HAVE_FINALIZE,

Example_Type_slots

};

/* Function of two integers returning integer */

PyDoc_STRVAR(testexport_foo_doc,

"foo(i,j)\n\

\n\

Return the sum of i and j.");

static PyObject *

testexport_foo(PyObject *self, PyObject *args)

{

long i, j;

long res;

if (!PyArg_ParseTuple(args, "ll:foo", &i, &j))

return NULL;

res = i + j;

return PyLong_FromLong(res);

}

/* Test that PyState registration fails */

PyDoc_STRVAR(call_state_registration_func_doc,

"register_state(0): call PyState_FindModule()\n\

register_state(1): call PyState_AddModule()\n\

register_state(2): call PyState_RemoveModule()");

static PyObject *

call_state_registration_func(PyObject *mod, PyObject *args)

{

int i, ret;

PyModuleDef *def = PyModule_GetDef(mod);

if (def == NULL) {

return NULL;

}

if (!PyArg_ParseTuple(args, "i:call_state_registration_func", &i))

return NULL;

switch (i) {

case 0:

mod = PyState_FindModule(def);

if (mod == NULL) {

Py_RETURN_NONE;

}

return mod;

case 1:

ret = PyState_AddModule(mod, def);

if (ret != 0) {

return NULL;

}

break;

case 2:

ret = PyState_RemoveModule(def);

if (ret != 0) {

return NULL;

}

break;

}

Py_RETURN_NONE;

}

static PyType_Slot Str_Type_slots[] = {

{Py_tp_base, NULL}, /* filled out in module exec function */

{0, 0},

};

static PyType_Spec Str_Type_spec = {

"_testimportexec.Str",

Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,

Str_Type_slots

};

static PyMethodDef testexport_methods[] = {

{"foo", testexport_foo, METH_VARARGS,

testexport_foo_doc},

{"call_state_registration_func", call_state_registration_func,

METH_VARARGS, call_state_registration_func_doc},

{NULL, NULL} /* sentinel */

};

static int execfunc(PyObject *m)

{

PyObject *temp = NULL;

/* Due to cross platform compiler issues the slots must be filled

* here. It's required for portability to Windows without requiring

* C++. */

Str_Type_slots[0].pfunc = &PyUnicode_Type;

/* Add a custom type */

temp = PyType_FromSpec(&Example_Type_spec);

if (temp == NULL)

goto fail;

if (PyModule_AddObject(m, "Example", temp) != 0)

goto fail;

/* Add an exception type */

temp = PyErr_NewException("_testimportexec.error", NULL, NULL);

if (temp == NULL)

goto fail;

if (PyModule_AddObject(m, "error", temp) != 0)

goto fail;

/* Add Str */

temp = PyType_FromSpec(&Str_Type_spec);

if (temp == NULL)

goto fail;

if (PyModule_AddObject(m, "Str", temp) != 0)

goto fail;

if (PyModule_AddIntConstant(m, "int_const", 1969) != 0)

goto fail;

if (PyModule_AddStringConstant(m, "str_const", "something different") != 0)

goto fail;

return 0;

fail:

return -1;

}

/* Helper for module definitions; there'll be a lot of them */

#define TEST_MODULE_DEF_EX(name, slots, methods, statesize, traversefunc) { \

PyModuleDef_HEAD_INIT, /* m_base */ \

name, /* m_name */ \

PyDoc_STR("Test module " name), /* m_doc */ \

statesize, /* m_size */ \

methods, /* m_methods */ \

slots, /* m_slots */ \

traversefunc, /* m_traverse */ \

NULL, /* m_clear */ \

NULL, /* m_free */ \

}

#define TEST_MODULE_DEF(name, slots, methods) TEST_MODULE_DEF_EX(name, slots, methods, 0, NULL)

static PyModuleDef_Slot main_slots[] = {

{Py_mod_exec, execfunc},

{0, NULL},

};

static PyModuleDef main_def = TEST_MODULE_DEF("main", main_slots, testexport_methods);

PyMODINIT_FUNC

PyInit__testmultiphase(PyObject *spec)

{

return PyModuleDef_Init(&main_def);

}

/**** Importing a non-module object ****/

static PyModuleDef def_nonmodule;

static PyModuleDef def_nonmodule_with_methods;

/* Create a SimpleNamespace(three=3) */

static PyObject*

createfunc_nonmodule(PyObject *spec, PyModuleDef *def)

{

PyObject *dct, *ns, *three;

if (def != &def_nonmodule && def != &def_nonmodule_with_methods) {

PyErr_SetString(PyExc_SystemError, "def does not match");

return NULL;

}

dct = PyDict_New();

if (dct == NULL)

return NULL;

three = PyLong_FromLong(3);

if (three == NULL) {

Py_DECREF(dct);

return NULL;

}

PyDict_SetItemString(dct, "three", three);

Py_DECREF(three);

ns = _PyNamespace_New(dct);

Py_DECREF(dct);

return ns;

}

static PyModuleDef_Slot slots_create_nonmodule[] = {

{Py_mod_create, createfunc_nonmodule},

{0, NULL},

};

static PyModuleDef def_nonmodule = TEST_MODULE_DEF(

"_testmultiphase_nonmodule", slots_create_nonmodule, NULL);

PyMODINIT_FUNC

PyInit__testmultiphase_nonmodule(PyObject *spec)

{

return PyModuleDef_Init(&def_nonmodule);

}

PyDoc_STRVAR(nonmodule_bar_doc,

"bar(i,j)\n\

\n\

Return the difference of i - j.");

static PyObject *

nonmodule_bar(PyObject *self, PyObject *args)

{

long i, j;

long res;

if (!PyArg_ParseTuple(args, "ll:bar", &i, &j))

return NULL;

res = i - j;

return PyLong_FromLong(res);

}

static PyMethodDef nonmodule_methods[] = {

{"bar", nonmodule_bar, METH_VARARGS, nonmodule_bar_doc},

{NULL, NULL} /* sentinel */

};

static PyModuleDef def_nonmodule_with_methods = TEST_MODULE_DEF(

"_testmultiphase_nonmodule_with_methods", slots_create_nonmodule, nonmodule_methods);

PyMODINIT_FUNC

PyInit__testmultiphase_nonmodule_with_methods(PyObject *spec)

{

return PyModuleDef_Init(&def_nonmodule_with_methods);

}

/**** Non-ASCII-named modules ****/

static PyModuleDef def_nonascii_latin = { \

PyModuleDef_HEAD_INIT, /* m_base */

"_testmultiphase_nonascii_latin", /* m_name */

PyDoc_STR("Module named in Czech"), /* m_doc */

0, /* m_size */

NULL, /* m_methods */

NULL, /* m_slots */

NULL, /* m_traverse */

NULL, /* m_clear */

NULL, /* m_free */

};

PyMODINIT_FUNC

PyInitU__testmultiphase_zkouka_naten_evc07gi8e(PyObject *spec)

{

return PyModuleDef_Init(&def_nonascii_latin);

}

static PyModuleDef def_nonascii_kana = { \

PyModuleDef_HEAD_INIT, /* m_base */

"_testmultiphase_nonascii_kana", /* m_name */

PyDoc_STR("Module named in Japanese"), /* m_doc */

0, /* m_size */

NULL, /* m_methods */

NULL, /* m_slots */

NULL, /* m_traverse */

NULL, /* m_clear */

NULL, /* m_free */

};

PyMODINIT_FUNC

PyInitU_eckzbwbhc6jpgzcx415x(PyObject *spec)

{

return PyModuleDef_Init(&def_nonascii_kana);

}

/*** Module with a single-character name ***/

PyMODINIT_FUNC

PyInit_x(PyObject *spec)

{

return PyModuleDef_Init(&main_def);

}

/**** Testing NULL slots ****/

static PyModuleDef null_slots_def = TEST_MODULE_DEF(

"_testmultiphase_null_slots", NULL, NULL);

PyMODINIT_FUNC

PyInit__testmultiphase_null_slots(PyObject *spec)

{

return PyModuleDef_Init(&null_slots_def);

}

/**** Problematic modules ****/

static PyModuleDef_Slot slots_bad_large[] = {

{_Py_mod_LAST_SLOT + 1, NULL},

{0, NULL},

};

static PyModuleDef def_bad_large = TEST_MODULE_DEF(

"_testmultiphase_bad_slot_large", slots_bad_large, NULL);

PyMODINIT_FUNC

PyInit__testmultiphase_bad_slot_large(PyObject *spec)

{

return PyModuleDef_Init(&def_bad_large);

}

static PyModuleDef_Slot slots_bad_negative[] = {

{-1, NULL},

{0, NULL},

};

static PyModuleDef def_bad_negative = TEST_MODULE_DEF(

"_testmultiphase_bad_slot_negative", slots_bad_negative, NULL);

PyMODINIT_FUNC

PyInit__testmultiphase_bad_slot_negative(PyObject *spec)

{

return PyModuleDef_Init(&def_bad_negative);

}

static PyModuleDef def_create_int_with_state = { \

PyModuleDef_HEAD_INIT, /* m_base */

"create_with_state", /* m_name */

PyDoc_STR("Not a PyModuleObject object, but requests per-module state"),

10, /* m_size */

NULL, /* m_methods */

slots_create_nonmodule, /* m_slots */

NULL, /* m_traverse */

NULL, /* m_clear */

NULL, /* m_free */

};

PyMODINIT_FUNC

PyInit__testmultiphase_create_int_with_state(PyObject *spec)

{

return PyModuleDef_Init(&def_create_int_with_state);

}

static PyModuleDef def_negative_size = { \

PyModuleDef_HEAD_INIT, /* m_base */

"negative_size", /* m_name */

PyDoc_STR("PyModuleDef with negative m_size"),

-1, /* m_size */

NULL, /* m_methods */

slots_create_nonmodule, /* m_slots */

NULL, /* m_traverse */

NULL, /* m_clear */

NULL, /* m_free */

};

PyMODINIT_FUNC

PyInit__testmultiphase_negative_size(PyObject *spec)

{

return PyModuleDef_Init(&def_negative_size);

}

static PyModuleDef uninitialized_def = TEST_MODULE_DEF("main", main_slots, testexport_methods);

PyMODINIT_FUNC

PyInit__testmultiphase_export_uninitialized(PyObject *spec)

{

return (PyObject*) &uninitialized_def;

}

PyMODINIT_FUNC

PyInit__testmultiphase_export_null(PyObject *spec)

{

return NULL;

}

PyMODINIT_FUNC

PyInit__testmultiphase_export_raise(PyObject *spec)

{

PyErr_SetString(PyExc_SystemError, "bad export function");

return NULL;

}

PyMODINIT_FUNC

PyInit__testmultiphase_export_unreported_exception(PyObject *spec)

{

PyErr_SetString(PyExc_SystemError, "bad export function");

return PyModuleDef_Init(&main_def);

}

static PyObject*

createfunc_null(PyObject *spec, PyModuleDef *def)

{

return NULL;

}

static PyModuleDef_Slot slots_create_null[] = {

{Py_mod_create, createfunc_null},

{0, NULL},

};

static PyModuleDef def_create_null = TEST_MODULE_DEF(

"_testmultiphase_create_null", slots_create_null, NULL);

PyMODINIT_FUNC

PyInit__testmultiphase_create_null(PyObject *spec)

{

return PyModuleDef_Init(&def_create_null);

}

static PyObject*

createfunc_raise(PyObject *spec, PyModuleDef *def)

{

PyErr_SetString(PyExc_SystemError, "bad create function");

return NULL;

}

static PyModuleDef_Slot slots_create_raise[] = {

{Py_mod_create, createfunc_raise},

{0, NULL},

};

static PyModuleDef def_create_raise = TEST_MODULE_DEF(

"_testmultiphase_create_null", slots_create_raise, NULL);

PyMODINIT_FUNC

PyInit__testmultiphase_create_raise(PyObject *spec)

{

return PyModuleDef_Init(&def_create_raise);

}

static PyObject*

createfunc_unreported_exception(PyObject *spec, PyModuleDef *def)

{

PyErr_SetString(PyExc_SystemError, "bad create function");

return PyModule_New("foo");

}

static PyModuleDef_Slot slots_create_unreported_exception[] = {

{Py_mod_create, createfunc_unreported_exception},

{0, NULL},

};

static PyModuleDef def_create_unreported_exception = TEST_MODULE_DEF(

"_testmultiphase_create_unreported_exception", slots_create_unreported_exception, NULL);

PyMODINIT_FUNC

PyInit__testmultiphase_create_unreported_exception(PyObject *spec)

{

return PyModuleDef_Init(&def_create_unreported_exception);

}

static PyModuleDef_Slot slots_nonmodule_with_exec_slots[] = {

{Py_mod_create, createfunc_nonmodule},

{Py_mod_exec, execfunc},

{0, NULL},

};

static PyModuleDef def_nonmodule_with_exec_slots = TEST_MODULE_DEF(

"_testmultiphase_nonmodule_with_exec_slots", slots_nonmodule_with_exec_slots, NULL);

PyMODINIT_FUNC

PyInit__testmultiphase_nonmodule_with_exec_slots(PyObject *spec)

{

return PyModuleDef_Init(&def_nonmodule_with_exec_slots);

}

static int

execfunc_err(PyObject *mod)

{

return -1;

}

static PyModuleDef_Slot slots_exec_err[] = {

{Py_mod_exec, execfunc_err},

{0, NULL},

};

static PyModuleDef def_exec_err = TEST_MODULE_DEF(

"_testmultiphase_exec_err", slots_exec_err, NULL);

PyMODINIT_FUNC

PyInit__testmultiphase_exec_err(PyObject *spec)

{

return PyModuleDef_Init(&def_exec_err);

}

static int

execfunc_raise(PyObject *spec)

{

PyErr_SetString(PyExc_SystemError, "bad exec function");

return -1;

}

static PyModuleDef_Slot slots_exec_raise[] = {

{Py_mod_exec, execfunc_raise},

{0, NULL},

};

static PyModuleDef def_exec_raise = TEST_MODULE_DEF(

"_testmultiphase_exec_raise", slots_exec_raise, NULL);

PyMODINIT_FUNC

PyInit__testmultiphase_exec_raise(PyObject *mod)

{

return PyModuleDef_Init(&def_exec_raise);

}

static int

execfunc_unreported_exception(PyObject *mod)

{

PyErr_SetString(PyExc_SystemError, "bad exec function");

return 0;

}

static PyModuleDef_Slot slots_exec_unreported_exception[] = {

{Py_mod_exec, execfunc_unreported_exception},

{0, NULL},

};

static PyModuleDef def_exec_unreported_exception = TEST_MODULE_DEF(

"_testmultiphase_exec_unreported_exception", slots_exec_unreported_exception, NULL);

PyMODINIT_FUNC

PyInit__testmultiphase_exec_unreported_exception(PyObject *spec)

{

return PyModuleDef_Init(&def_exec_unreported_exception);

}

static int

bad_traverse(PyObject *self, visitproc visit, void *arg) {

testmultiphase_state *m_state;

m_state = PyModule_GetState(self);

Py_VISIT(m_state->integer);

return 0;

}

static int

execfunc_with_bad_traverse(PyObject *mod) {

testmultiphase_state *m_state;

m_state = PyModule_GetState(mod);

if (m_state == NULL) {

return -1;

}

m_state->integer = PyLong_FromLong(0x7fffffff);

Py_INCREF(m_state->integer);

return 0;

}

static PyModuleDef_Slot slots_with_bad_traverse[] = {

{Py_mod_exec, execfunc_with_bad_traverse},

{0, NULL}

};

static PyModuleDef def_with_bad_traverse = TEST_MODULE_DEF_EX(

"_testmultiphase_with_bad_traverse", slots_with_bad_traverse, NULL,

sizeof(testmultiphase_state), bad_traverse);

PyMODINIT_FUNC

PyInit__testmultiphase_with_bad_traverse(PyObject *spec) {

return PyModuleDef_Init(&def_with_bad_traverse);

}

/*** Helper for imp test ***/

static PyModuleDef imp_dummy_def = TEST_MODULE_DEF("imp_dummy", main_slots, testexport_methods);

PyMODINIT_FUNC

PyInit_imp_dummy(PyObject *spec)

{

return PyModuleDef_Init(&imp_dummy_def);

}

cpython/Modules/_testmultiphase.c at pythoncapi · pythoncapi/cpython · GitHub

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