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Add PyMapping_HasKeyWithError() function#73

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Merged
vstinner merged 2 commits intomainfrommapping_hasattr
Sep 19, 2023
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8 changes: 8 additions & 0 deletionsdocs/api.rst
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Original file line numberDiff line numberDiff line change
Expand Up@@ -58,6 +58,14 @@ Python 3.13

See `PyMapping_GetOptionalItemString() documentation <https://docs.python.org/dev/c-api/mapping.html#c.PyMapping_GetOptionalItemString>`__.

.. c:function:: int PyMapping_HasKeyWithError(PyObject *obj, PyObject *key)

See `PyMapping_HasKeyWithError() documentation <https://docs.python.org/dev/c-api/mapping.html#c.PyMapping_HasKeyWithError>`__.

.. c:function:: int PyMapping_HasKeyStringWithError(PyObject *obj, const char *key)

See `PyMapping_HasKeyStringWithError() documentation <https://docs.python.org/dev/c-api/mapping.html#c.PyMapping_HasKeyStringWithError>`__.

.. c:function:: int PyModule_Add(PyObject *module, const char *name, PyObject *value)

See `PyModule_Add() documentation <https://docs.python.org/dev/c-api/module.html#c.PyModule_Add>`__.
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26 changes: 25 additions & 1 deletionpythoncapi_compat.h
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Expand Up@@ -711,7 +711,8 @@ PyObject_GetOptionalAttrString(PyObject *obj, const char *name, PyObject **resul
#endif


// gh-106307 added PyObject_GetOptionalAttr() to Python 3.13.0a1
// gh-106307 added PyObject_GetOptionalAttr() and
// PyMapping_GetOptionalItemString() to Python 3.13.0a1
#if PY_VERSION_HEX < 0x030D00A1
static inline int
PyMapping_GetOptionalItem(PyObject *obj, PyObject *key, PyObject **result)
Expand All@@ -738,6 +739,7 @@ PyMapping_GetOptionalItemString(PyObject *obj, const char *key, PyObject **resul
key_obj = PyString_FromString(key);
#endif
if (key_obj == NULL) {
*result = NULL;
return -1;
}
rc = PyMapping_GetOptionalItem(obj, key_obj, result);
Expand All@@ -746,6 +748,28 @@ PyMapping_GetOptionalItemString(PyObject *obj, const char *key, PyObject **resul
}
#endif

// gh-108511 added PyMapping_HasKeyWithError() and
// PyMapping_HasKeyStringWithError() to Python 3.13.0a1
#if PY_VERSION_HEX < 0x030D00A1
static inline int
PyMapping_HasKeyWithError(PyObject *obj, PyObject *key)
{
PyObject *res;
int rc = PyMapping_GetOptionalItem(obj, key, &res);
Py_XDECREF(res);
return rc;
}

static inline int
PyMapping_HasKeyStringWithError(PyObject *obj, const char *key)
{
PyObject *res;
int rc = PyMapping_GetOptionalItemString(obj, key, &res);
Py_XDECREF(res);
return rc;
}
#endif


// gh-106004 added PyDict_GetItemRef() and PyDict_GetItemStringRef()
// to Python 3.13.0a1
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69 changes: 46 additions & 23 deletionstests/test_pythoncapi_compat_cext.c
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Expand Up@@ -50,6 +50,10 @@
# define ASSERT_REFCNT(expr)
#endif

// Marker to check that pointer value was set
static const char uninitialized[] = "uninitialized";
#define UNINITIALIZED_OBJ ((PyObject *)uninitialized)


static PyObject*
create_string(const char *str)
Expand DownExpand Up@@ -806,7 +810,7 @@ test_weakref(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
}

// test PyWeakref_GetRef(), reference is alive
PyObject *ref =Py_True; // marker to check that value was set
PyObject *ref =UNINITIALIZED_OBJ;
assert(PyWeakref_GetRef(weakref, &ref) == 1);
assert(ref == obj);
assert(Py_REFCNT(obj) == (refcnt + 1));
Expand DownExpand Up@@ -1016,28 +1020,28 @@ test_getattr(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))

// test PyObject_GetOptionalAttr(): attribute exists
attr_name = create_string("version");
value =Py_True; // marker value
value =UNINITIALIZED_OBJ;
assert(PyObject_GetOptionalAttr(obj, attr_name, &value) == 1);
assert(value != _Py_NULL);
Py_DECREF(value);
Py_DECREF(attr_name);

// test PyObject_GetOptionalAttrString(): attribute exists
value =Py_True; // marker value
value =UNINITIALIZED_OBJ;
assert(PyObject_GetOptionalAttrString(obj, "version", &value) == 1);
assert(value != _Py_NULL);
Py_DECREF(value);

// test PyObject_GetOptionalAttr(): attribute doesn't exist
attr_name = create_string("nonexistant_attr_name");
value =Py_True; // marker value
value =UNINITIALIZED_OBJ;
assert(PyObject_GetOptionalAttr(obj, attr_name, &value) == 0);
assert(value == _Py_NULL);
Py_DECREF(attr_name);
assert(!PyErr_Occurred());

// test PyObject_GetOptionalAttrString(): attribute doesn't exist
value =Py_True; // marker value
value =UNINITIALIZED_OBJ;
assert(PyObject_GetOptionalAttrString(obj, "nonexistant_attr_name", &value) == 0);
assert(value == _Py_NULL);
assert(!PyErr_Occurred());
Expand All@@ -1056,37 +1060,56 @@ test_getitem(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
assert(value != _Py_NULL);
PyObject *obj = Py_BuildValue("{sO}", "key", value);
assert(obj != _Py_NULL);
PyObject *key;
PyObject *present_key, *missing_key;
PyObject *item;

present_key = create_string("key");
missing_key = create_string("dontexist");

// test PyMapping_GetOptionalItem(): key is present
key = create_string("key");
item = Py_True; // marker value
assert(PyMapping_GetOptionalItem(obj, key, &item) == 1);
item = UNINITIALIZED_OBJ;
assert(PyMapping_GetOptionalItem(obj, present_key, &item) == 1);
assert(item == value);
Py_DECREF(item);
Py_DECREF(key);
assert(!PyErr_Occurred());

// test PyMapping_HasKeyWithError(): key is present
assert(PyMapping_HasKeyWithError(obj, present_key) == 1);
assert(!PyErr_Occurred());

// test PyMapping_GetOptionalItemString(): key is present
item =Py_True; // marker value
item =UNINITIALIZED_OBJ;
assert(PyMapping_GetOptionalItemString(obj, "key", &item) == 1);
assert(item == value);
Py_DECREF(item);

// test PyMapping_HasKeyStringWithError(): key is present
assert(PyMapping_HasKeyStringWithError(obj, "key") == 1);
assert(!PyErr_Occurred());

// test PyMapping_GetOptionalItem(): missing key
key = create_string("dontexist");
item = Py_True; // marker value
assert(PyMapping_GetOptionalItem(obj, key, &item) == 0);
item = UNINITIALIZED_OBJ;
assert(PyMapping_GetOptionalItem(obj, missing_key, &item) == 0);
assert(item == _Py_NULL);
Py_DECREF(key);
assert(!PyErr_Occurred());

// test PyMapping_HasKeyWithError(): missing key
assert(PyMapping_HasKeyWithError(obj, missing_key) == 0);
assert(!PyErr_Occurred());

// test PyMapping_GetOptionalItemString(): missing key
item =Py_True; // marker value
item =UNINITIALIZED_OBJ;
assert(PyMapping_GetOptionalItemString(obj, "dontexist", &item) == 0);
assert(item == _Py_NULL);

// test PyMapping_HasKeyStringWithError(): missing key
assert(PyMapping_HasKeyStringWithError(obj, "dontexist") == 0);
assert(!PyErr_Occurred());

Py_DECREF(obj);
Py_DECREF(value);
Py_DECREF(present_key);
Py_DECREF(missing_key);
Py_RETURN_NONE;
}

Expand DownExpand Up@@ -1147,45 +1170,45 @@ test_dict_api(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
PyErr_Clear();

// test PyDict_GetItemRef(), key is present
get_value =Py_Ellipsis; // marker value
get_value =UNINITIALIZED_OBJ;
assert(PyDict_GetItemRef(dict, key, &get_value) == 1);
assert(get_value == value);
Py_DECREF(get_value);

// test PyDict_GetItemStringRef(), key is present
get_value =Py_Ellipsis; // marker value
get_value =UNINITIALIZED_OBJ;
assert(PyDict_GetItemStringRef(dict, "key", &get_value) == 1);
assert(get_value == value);
Py_DECREF(get_value);

// test PyDict_GetItemRef(), missing key
get_value =Py_Ellipsis; // marker value
get_value =UNINITIALIZED_OBJ;
assert(PyDict_GetItemRef(dict, missing_key, &get_value) == 0);
assert(!PyErr_Occurred());
assert(get_value == NULL);

// test PyDict_GetItemStringRef(), missing key
get_value =Py_Ellipsis; // marker value
get_value =UNINITIALIZED_OBJ;
assert(PyDict_GetItemStringRef(dict, "missing_key", &get_value) == 0);
assert(!PyErr_Occurred());
assert(get_value == NULL);

// test PyDict_GetItemRef(), invalid dict
get_value =Py_Ellipsis; // marker value
get_value =UNINITIALIZED_OBJ;
assert(PyDict_GetItemRef(invalid_dict, key, &get_value) == -1);
assert(PyErr_ExceptionMatches(PyExc_SystemError));
PyErr_Clear();
assert(get_value == NULL);

// test PyDict_GetItemStringRef(), invalid dict
get_value =Py_Ellipsis; // marker value
get_value =UNINITIALIZED_OBJ;
assert(PyDict_GetItemStringRef(invalid_dict, "key", &get_value) == -1);
assert(PyErr_ExceptionMatches(PyExc_SystemError));
PyErr_Clear();
assert(get_value == NULL);

// test PyDict_GetItemRef(), invalid key
get_value =Py_Ellipsis; // marker value
get_value =UNINITIALIZED_OBJ;
assert(PyDict_GetItemRef(dict, invalid_key, &get_value) == -1);
assert(PyErr_ExceptionMatches(PyExc_TypeError));
PyErr_Clear();
Expand Down
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