diff options
Diffstat (limited to 'Objects/typeobject.c')
| -rw-r--r-- | Objects/typeobject.c | 9558 |
1 files changed, 4779 insertions, 4779 deletions
diff --git a/Objects/typeobject.c b/Objects/typeobject.c index 07a8cd9..a94508d 100644 --- a/Objects/typeobject.c +++ b/Objects/typeobject.c @@ -13,22 +13,22 @@ they normally would. This is why the maximum size is limited to MCACHE_MAX_ATTR_SIZE, since it might be a problem if very large strings are used as attribute names. */ -#define MCACHE_MAX_ATTR_SIZE 100 -#define MCACHE_SIZE_EXP 10 -#define MCACHE_HASH(version, name_hash) \ - (((unsigned int)(version) * (unsigned int)(name_hash)) \ - >> (8*sizeof(unsigned int) - MCACHE_SIZE_EXP)) +#define MCACHE_MAX_ATTR_SIZE 100 +#define MCACHE_SIZE_EXP 10 +#define MCACHE_HASH(version, name_hash) \ + (((unsigned int)(version) * (unsigned int)(name_hash)) \ + >> (8*sizeof(unsigned int) - MCACHE_SIZE_EXP)) #define MCACHE_HASH_METHOD(type, name) \ - MCACHE_HASH((type)->tp_version_tag, \ - ((PyUnicodeObject *)(name))->hash) + MCACHE_HASH((type)->tp_version_tag, \ + ((PyUnicodeObject *)(name))->hash) #define MCACHE_CACHEABLE_NAME(name) \ - PyUnicode_CheckExact(name) && \ - PyUnicode_GET_SIZE(name) <= MCACHE_MAX_ATTR_SIZE + PyUnicode_CheckExact(name) && \ + PyUnicode_GET_SIZE(name) <= MCACHE_MAX_ATTR_SIZE struct method_cache_entry { - unsigned int version; - PyObject *name; /* reference to exactly a str or None */ - PyObject *value; /* borrowed */ + unsigned int version; + PyObject *name; /* reference to exactly a str or None */ + PyObject *value; /* borrowed */ }; static struct method_cache_entry method_cache[1 << MCACHE_SIZE_EXP]; @@ -37,325 +37,325 @@ static unsigned int next_version_tag = 0; unsigned int PyType_ClearCache(void) { - Py_ssize_t i; - unsigned int cur_version_tag = next_version_tag - 1; - - for (i = 0; i < (1 << MCACHE_SIZE_EXP); i++) { - method_cache[i].version = 0; - Py_CLEAR(method_cache[i].name); - method_cache[i].value = NULL; - } - next_version_tag = 0; - /* mark all version tags as invalid */ - PyType_Modified(&PyBaseObject_Type); - return cur_version_tag; + Py_ssize_t i; + unsigned int cur_version_tag = next_version_tag - 1; + + for (i = 0; i < (1 << MCACHE_SIZE_EXP); i++) { + method_cache[i].version = 0; + Py_CLEAR(method_cache[i].name); + method_cache[i].value = NULL; + } + next_version_tag = 0; + /* mark all version tags as invalid */ + PyType_Modified(&PyBaseObject_Type); + return cur_version_tag; } void PyType_Modified(PyTypeObject *type) { - /* Invalidate any cached data for the specified type and all - subclasses. This function is called after the base - classes, mro, or attributes of the type are altered. - - Invariants: - - - Py_TPFLAGS_VALID_VERSION_TAG is never set if - Py_TPFLAGS_HAVE_VERSION_TAG is not set (e.g. on type - objects coming from non-recompiled extension modules) - - - before Py_TPFLAGS_VALID_VERSION_TAG can be set on a type, - it must first be set on all super types. - - This function clears the Py_TPFLAGS_VALID_VERSION_TAG of a - type (so it must first clear it on all subclasses). The - tp_version_tag value is meaningless unless this flag is set. - We don't assign new version tags eagerly, but only as - needed. - */ - PyObject *raw, *ref; - Py_ssize_t i, n; - - if (!PyType_HasFeature(type, Py_TPFLAGS_VALID_VERSION_TAG)) - return; - - raw = type->tp_subclasses; - if (raw != NULL) { - n = PyList_GET_SIZE(raw); - for (i = 0; i < n; i++) { - ref = PyList_GET_ITEM(raw, i); - ref = PyWeakref_GET_OBJECT(ref); - if (ref != Py_None) { - PyType_Modified((PyTypeObject *)ref); - } - } - } - type->tp_flags &= ~Py_TPFLAGS_VALID_VERSION_TAG; + /* Invalidate any cached data for the specified type and all + subclasses. This function is called after the base + classes, mro, or attributes of the type are altered. + + Invariants: + + - Py_TPFLAGS_VALID_VERSION_TAG is never set if + Py_TPFLAGS_HAVE_VERSION_TAG is not set (e.g. on type + objects coming from non-recompiled extension modules) + + - before Py_TPFLAGS_VALID_VERSION_TAG can be set on a type, + it must first be set on all super types. + + This function clears the Py_TPFLAGS_VALID_VERSION_TAG of a + type (so it must first clear it on all subclasses). The + tp_version_tag value is meaningless unless this flag is set. + We don't assign new version tags eagerly, but only as + needed. + */ + PyObject *raw, *ref; + Py_ssize_t i, n; + + if (!PyType_HasFeature(type, Py_TPFLAGS_VALID_VERSION_TAG)) + return; + + raw = type->tp_subclasses; + if (raw != NULL) { + n = PyList_GET_SIZE(raw); + for (i = 0; i < n; i++) { + ref = PyList_GET_ITEM(raw, i); + ref = PyWeakref_GET_OBJECT(ref); + if (ref != Py_None) { + PyType_Modified((PyTypeObject *)ref); + } + } + } + type->tp_flags &= ~Py_TPFLAGS_VALID_VERSION_TAG; } static void type_mro_modified(PyTypeObject *type, PyObject *bases) { - /* - Check that all base classes or elements of the mro of type are - able to be cached. This function is called after the base - classes or mro of the type are altered. - - Unset HAVE_VERSION_TAG and VALID_VERSION_TAG if the type - inherits from an old-style class, either directly or if it - appears in the MRO of a new-style class. No support either for - custom MROs that include types that are not officially super - types. - - Called from mro_internal, which will subsequently be called on - each subclass when their mro is recursively updated. - */ - Py_ssize_t i, n; - int clear = 0; - - if (!PyType_HasFeature(type, Py_TPFLAGS_HAVE_VERSION_TAG)) - return; - - n = PyTuple_GET_SIZE(bases); - for (i = 0; i < n; i++) { - PyObject *b = PyTuple_GET_ITEM(bases, i); - PyTypeObject *cls; - - if (!PyType_Check(b) ) { - clear = 1; - break; - } - - cls = (PyTypeObject *)b; - - if (!PyType_HasFeature(cls, Py_TPFLAGS_HAVE_VERSION_TAG) || - !PyType_IsSubtype(type, cls)) { - clear = 1; - break; - } - } - - if (clear) - type->tp_flags &= ~(Py_TPFLAGS_HAVE_VERSION_TAG| - Py_TPFLAGS_VALID_VERSION_TAG); + /* + Check that all base classes or elements of the mro of type are + able to be cached. This function is called after the base + classes or mro of the type are altered. + + Unset HAVE_VERSION_TAG and VALID_VERSION_TAG if the type + inherits from an old-style class, either directly or if it + appears in the MRO of a new-style class. No support either for + custom MROs that include types that are not officially super + types. + + Called from mro_internal, which will subsequently be called on + each subclass when their mro is recursively updated. + */ + Py_ssize_t i, n; + int clear = 0; + + if (!PyType_HasFeature(type, Py_TPFLAGS_HAVE_VERSION_TAG)) + return; + + n = PyTuple_GET_SIZE(bases); + for (i = 0; i < n; i++) { + PyObject *b = PyTuple_GET_ITEM(bases, i); + PyTypeObject *cls; + + if (!PyType_Check(b) ) { + clear = 1; + break; + } + + cls = (PyTypeObject *)b; + + if (!PyType_HasFeature(cls, Py_TPFLAGS_HAVE_VERSION_TAG) || + !PyType_IsSubtype(type, cls)) { + clear = 1; + break; + } + } + + if (clear) + type->tp_flags &= ~(Py_TPFLAGS_HAVE_VERSION_TAG| + Py_TPFLAGS_VALID_VERSION_TAG); } static int assign_version_tag(PyTypeObject *type) { - /* Ensure that the tp_version_tag is valid and set - Py_TPFLAGS_VALID_VERSION_TAG. To respect the invariant, this - must first be done on all super classes. Return 0 if this - cannot be done, 1 if Py_TPFLAGS_VALID_VERSION_TAG. - */ - Py_ssize_t i, n; - PyObject *bases; - - if (PyType_HasFeature(type, Py_TPFLAGS_VALID_VERSION_TAG)) - return 1; - if (!PyType_HasFeature(type, Py_TPFLAGS_HAVE_VERSION_TAG)) - return 0; - if (!PyType_HasFeature(type, Py_TPFLAGS_READY)) - return 0; - - type->tp_version_tag = next_version_tag++; - /* for stress-testing: next_version_tag &= 0xFF; */ - - if (type->tp_version_tag == 0) { - /* wrap-around or just starting Python - clear the whole - cache by filling names with references to Py_None. - Values are also set to NULL for added protection, as they - are borrowed reference */ - for (i = 0; i < (1 << MCACHE_SIZE_EXP); i++) { - method_cache[i].value = NULL; - Py_XDECREF(method_cache[i].name); - method_cache[i].name = Py_None; - Py_INCREF(Py_None); - } - /* mark all version tags as invalid */ - PyType_Modified(&PyBaseObject_Type); - return 1; - } - bases = type->tp_bases; - n = PyTuple_GET_SIZE(bases); - for (i = 0; i < n; i++) { - PyObject *b = PyTuple_GET_ITEM(bases, i); - assert(PyType_Check(b)); - if (!assign_version_tag((PyTypeObject *)b)) - return 0; - } - type->tp_flags |= Py_TPFLAGS_VALID_VERSION_TAG; - return 1; + /* Ensure that the tp_version_tag is valid and set + Py_TPFLAGS_VALID_VERSION_TAG. To respect the invariant, this + must first be done on all super classes. Return 0 if this + cannot be done, 1 if Py_TPFLAGS_VALID_VERSION_TAG. + */ + Py_ssize_t i, n; + PyObject *bases; + + if (PyType_HasFeature(type, Py_TPFLAGS_VALID_VERSION_TAG)) + return 1; + if (!PyType_HasFeature(type, Py_TPFLAGS_HAVE_VERSION_TAG)) + return 0; + if (!PyType_HasFeature(type, Py_TPFLAGS_READY)) + return 0; + + type->tp_version_tag = next_version_tag++; + /* for stress-testing: next_version_tag &= 0xFF; */ + + if (type->tp_version_tag == 0) { + /* wrap-around or just starting Python - clear the whole + cache by filling names with references to Py_None. + Values are also set to NULL for added protection, as they + are borrowed reference */ + for (i = 0; i < (1 << MCACHE_SIZE_EXP); i++) { + method_cache[i].value = NULL; + Py_XDECREF(method_cache[i].name); + method_cache[i].name = Py_None; + Py_INCREF(Py_None); + } + /* mark all version tags as invalid */ + PyType_Modified(&PyBaseObject_Type); + return 1; + } + bases = type->tp_bases; + n = PyTuple_GET_SIZE(bases); + for (i = 0; i < n; i++) { + PyObject *b = PyTuple_GET_ITEM(bases, i); + assert(PyType_Check(b)); + if (!assign_version_tag((PyTypeObject *)b)) + return 0; + } + type->tp_flags |= Py_TPFLAGS_VALID_VERSION_TAG; + return 1; } static PyMemberDef type_members[] = { - {"__basicsize__", T_INT, offsetof(PyTypeObject,tp_basicsize),READONLY}, - {"__itemsize__", T_INT, offsetof(PyTypeObject, tp_itemsize), READONLY}, - {"__flags__", T_LONG, offsetof(PyTypeObject, tp_flags), READONLY}, - {"__weakrefoffset__", T_LONG, - offsetof(PyTypeObject, tp_weaklistoffset), READONLY}, - {"__base__", T_OBJECT, offsetof(PyTypeObject, tp_base), READONLY}, - {"__dictoffset__", T_LONG, - offsetof(PyTypeObject, tp_dictoffset), READONLY}, - {"__mro__", T_OBJECT, offsetof(PyTypeObject, tp_mro), READONLY}, - {0} + {"__basicsize__", T_INT, offsetof(PyTypeObject,tp_basicsize),READONLY}, + {"__itemsize__", T_INT, offsetof(PyTypeObject, tp_itemsize), READONLY}, + {"__flags__", T_LONG, offsetof(PyTypeObject, tp_flags), READONLY}, + {"__weakrefoffset__", T_LONG, + offsetof(PyTypeObject, tp_weaklistoffset), READONLY}, + {"__base__", T_OBJECT, offsetof(PyTypeObject, tp_base), READONLY}, + {"__dictoffset__", T_LONG, + offsetof(PyTypeObject, tp_dictoffset), READONLY}, + {"__mro__", T_OBJECT, offsetof(PyTypeObject, tp_mro), READONLY}, + {0} }; static PyObject * type_name(PyTypeObject *type, void *context) { - const char *s; + const char *s; - if (type->tp_flags & Py_TPFLAGS_HEAPTYPE) { - PyHeapTypeObject* et = (PyHeapTypeObject*)type; + if (type->tp_flags & Py_TPFLAGS_HEAPTYPE) { + PyHeapTypeObject* et = (PyHeapTypeObject*)type; - Py_INCREF(et->ht_name); - return et->ht_name; - } - else { - s = strrchr(type->tp_name, '.'); - if (s == NULL) - s = type->tp_name; - else - s++; - return PyUnicode_FromString(s); - } + Py_INCREF(et->ht_name); + return et->ht_name; + } + else { + s = strrchr(type->tp_name, '.'); + if (s == NULL) + s = type->tp_name; + else + s++; + return PyUnicode_FromString(s); + } } static int type_set_name(PyTypeObject *type, PyObject *value, void *context) { - PyHeapTypeObject* et; - char *tp_name; - PyObject *tmp; - - if (!(type->tp_flags & Py_TPFLAGS_HEAPTYPE)) { - PyErr_Format(PyExc_TypeError, - "can't set %s.__name__", type->tp_name); - return -1; - } - if (!value) { - PyErr_Format(PyExc_TypeError, - "can't delete %s.__name__", type->tp_name); - return -1; - } - if (!PyUnicode_Check(value)) { - PyErr_Format(PyExc_TypeError, - "can only assign string to %s.__name__, not '%s'", - type->tp_name, Py_TYPE(value)->tp_name); - return -1; - } - - /* Check absence of null characters */ - tmp = PyUnicode_FromStringAndSize("\0", 1); - if (tmp == NULL) - return -1; - if (PyUnicode_Contains(value, tmp) != 0) { - Py_DECREF(tmp); - PyErr_Format(PyExc_ValueError, - "__name__ must not contain null bytes"); - return -1; - } - Py_DECREF(tmp); - - tp_name = _PyUnicode_AsString(value); - if (tp_name == NULL) - return -1; - - et = (PyHeapTypeObject*)type; - - Py_INCREF(value); - - Py_DECREF(et->ht_name); - et->ht_name = value; - - type->tp_name = tp_name; - - return 0; + PyHeapTypeObject* et; + char *tp_name; + PyObject *tmp; + + if (!(type->tp_flags & Py_TPFLAGS_HEAPTYPE)) { + PyErr_Format(PyExc_TypeError, + "can't set %s.__name__", type->tp_name); + return -1; + } + if (!value) { + PyErr_Format(PyExc_TypeError, + "can't delete %s.__name__", type->tp_name); + return -1; + } + if (!PyUnicode_Check(value)) { + PyErr_Format(PyExc_TypeError, + "can only assign string to %s.__name__, not '%s'", + type->tp_name, Py_TYPE(value)->tp_name); + return -1; + } + + /* Check absence of null characters */ + tmp = PyUnicode_FromStringAndSize("\0", 1); + if (tmp == NULL) + return -1; + if (PyUnicode_Contains(value, tmp) != 0) { + Py_DECREF(tmp); + PyErr_Format(PyExc_ValueError, + "__name__ must not contain null bytes"); + return -1; + } + Py_DECREF(tmp); + + tp_name = _PyUnicode_AsString(value); + if (tp_name == NULL) + return -1; + + et = (PyHeapTypeObject*)type; + + Py_INCREF(value); + + Py_DECREF(et->ht_name); + et->ht_name = value; + + type->tp_name = tp_name; + + return 0; } static PyObject * type_module(PyTypeObject *type, void *context) { - PyObject *mod; - char *s; - - if (type->tp_flags & Py_TPFLAGS_HEAPTYPE) { - mod = PyDict_GetItemString(type->tp_dict, "__module__"); - if (!mod) { - PyErr_Format(PyExc_AttributeError, "__module__"); - return 0; - } - Py_XINCREF(mod); - return mod; - } - else { - s = strrchr(type->tp_name, '.'); - if (s != NULL) - return PyUnicode_FromStringAndSize( - type->tp_name, (Py_ssize_t)(s - type->tp_name)); - return PyUnicode_FromString("builtins"); - } + PyObject *mod; + char *s; + + if (type->tp_flags & Py_TPFLAGS_HEAPTYPE) { + mod = PyDict_GetItemString(type->tp_dict, "__module__"); + if (!mod) { + PyErr_Format(PyExc_AttributeError, "__module__"); + return 0; + } + Py_XINCREF(mod); + return mod; + } + else { + s = strrchr(type->tp_name, '.'); + if (s != NULL) + return PyUnicode_FromStringAndSize( + type->tp_name, (Py_ssize_t)(s - type->tp_name)); + return PyUnicode_FromString("builtins"); + } } static int type_set_module(PyTypeObject *type, PyObject *value, void *context) { - if (!(type->tp_flags & Py_TPFLAGS_HEAPTYPE)) { - PyErr_Format(PyExc_TypeError, - "can't set %s.__module__", type->tp_name); - return -1; - } - if (!value) { - PyErr_Format(PyExc_TypeError, - "can't delete %s.__module__", type->tp_name); - return -1; - } + if (!(type->tp_flags & Py_TPFLAGS_HEAPTYPE)) { + PyErr_Format(PyExc_TypeError, + "can't set %s.__module__", type->tp_name); + return -1; + } + if (!value) { + PyErr_Format(PyExc_TypeError, + "can't delete %s.__module__", type->tp_name); + return -1; + } - PyType_Modified(type); + PyType_Modified(type); - return PyDict_SetItemString(type->tp_dict, "__module__", value); + return PyDict_SetItemString(type->tp_dict, "__module__", value); } static PyObject * type_abstractmethods(PyTypeObject *type, void *context) { - PyObject *mod = PyDict_GetItemString(type->tp_dict, - "__abstractmethods__"); - if (!mod) { - PyErr_Format(PyExc_AttributeError, "__abstractmethods__"); - return NULL; - } - Py_XINCREF(mod); - return mod; + PyObject *mod = PyDict_GetItemString(type->tp_dict, + "__abstractmethods__"); + if (!mod) { + PyErr_Format(PyExc_AttributeError, "__abstractmethods__"); + return NULL; + } + Py_XINCREF(mod); + return mod; } static int type_set_abstractmethods(PyTypeObject *type, PyObject *value, void *context) { - /* __abstractmethods__ should only be set once on a type, in - abc.ABCMeta.__new__, so this function doesn't do anything - special to update subclasses. - */ - int res = PyDict_SetItemString(type->tp_dict, - "__abstractmethods__", value); - if (res == 0) { - PyType_Modified(type); - if (value && PyObject_IsTrue(value)) { - type->tp_flags |= Py_TPFLAGS_IS_ABSTRACT; - } - else { - type->tp_flags &= ~Py_TPFLAGS_IS_ABSTRACT; - } - } - return res; + /* __abstractmethods__ should only be set once on a type, in + abc.ABCMeta.__new__, so this function doesn't do anything + special to update subclasses. + */ + int res = PyDict_SetItemString(type->tp_dict, + "__abstractmethods__", value); + if (res == 0) { + PyType_Modified(type); + if (value && PyObject_IsTrue(value)) { + type->tp_flags |= Py_TPFLAGS_IS_ABSTRACT; + } + else { + type->tp_flags &= ~Py_TPFLAGS_IS_ABSTRACT; + } + } + return res; } static PyObject * type_get_bases(PyTypeObject *type, void *context) { - Py_INCREF(type->tp_bases); - return type->tp_bases; + Py_INCREF(type->tp_bases); + return type->tp_bases; } static PyTypeObject *best_base(PyObject *); @@ -367,357 +367,357 @@ static void update_all_slots(PyTypeObject *); typedef int (*update_callback)(PyTypeObject *, void *); static int update_subclasses(PyTypeObject *type, PyObject *name, - update_callback callback, void *data); + update_callback callback, void *data); static int recurse_down_subclasses(PyTypeObject *type, PyObject *name, - update_callback callback, void *data); + update_callback callback, void *data); static int mro_subclasses(PyTypeObject *type, PyObject* temp) { - PyTypeObject *subclass; - PyObject *ref, *subclasses, *old_mro; - Py_ssize_t i, n; - - subclasses = type->tp_subclasses; - if (subclasses == NULL) - return 0; - assert(PyList_Check(subclasses)); - n = PyList_GET_SIZE(subclasses); - for (i = 0; i < n; i++) { - ref = PyList_GET_ITEM(subclasses, i); - assert(PyWeakref_CheckRef(ref)); - subclass = (PyTypeObject *)PyWeakref_GET_OBJECT(ref); - assert(subclass != NULL); - if ((PyObject *)subclass == Py_None) - continue; - assert(PyType_Check(subclass)); - old_mro = subclass->tp_mro; - if (mro_internal(subclass) < 0) { - subclass->tp_mro = old_mro; - return -1; - } - else { - PyObject* tuple; - tuple = PyTuple_Pack(2, subclass, old_mro); - Py_DECREF(old_mro); - if (!tuple) - return -1; - if (PyList_Append(temp, tuple) < 0) - return -1; - Py_DECREF(tuple); - } - if (mro_subclasses(subclass, temp) < 0) - return -1; - } - return 0; + PyTypeObject *subclass; + PyObject *ref, *subclasses, *old_mro; + Py_ssize_t i, n; + + subclasses = type->tp_subclasses; + if (subclasses == NULL) + return 0; + assert(PyList_Check(subclasses)); + n = PyList_GET_SIZE(subclasses); + for (i = 0; i < n; i++) { + ref = PyList_GET_ITEM(subclasses, i); + assert(PyWeakref_CheckRef(ref)); + subclass = (PyTypeObject *)PyWeakref_GET_OBJECT(ref); + assert(subclass != NULL); + if ((PyObject *)subclass == Py_None) + continue; + assert(PyType_Check(subclass)); + old_mro = subclass->tp_mro; + if (mro_internal(subclass) < 0) { + subclass->tp_mro = old_mro; + return -1; + } + else { + PyObject* tuple; + tuple = PyTuple_Pack(2, subclass, old_mro); + Py_DECREF(old_mro); + if (!tuple) + return -1; + if (PyList_Append(temp, tuple) < 0) + return -1; + Py_DECREF(tuple); + } + if (mro_subclasses(subclass, temp) < 0) + return -1; + } + return 0; } static int type_set_bases(PyTypeObject *type, PyObject *value, void *context) { - Py_ssize_t i; - int r = 0; - PyObject *ob, *temp; - PyTypeObject *new_base, *old_base; - PyObject *old_bases, *old_mro; - - if (!(type->tp_flags & Py_TPFLAGS_HEAPTYPE)) { - PyErr_Format(PyExc_TypeError, - "can't set %s.__bases__", type->tp_name); - return -1; - } - if (!value) { - PyErr_Format(PyExc_TypeError, - "can't delete %s.__bases__", type->tp_name); - return -1; - } - if (!PyTuple_Check(value)) { - PyErr_Format(PyExc_TypeError, - "can only assign tuple to %s.__bases__, not %s", - type->tp_name, Py_TYPE(value)->tp_name); - return -1; - } - if (PyTuple_GET_SIZE(value) == 0) { - PyErr_Format(PyExc_TypeError, - "can only assign non-empty tuple to %s.__bases__, not ()", - type->tp_name); - return -1; - } - for (i = 0; i < PyTuple_GET_SIZE(value); i++) { - ob = PyTuple_GET_ITEM(value, i); - if (!PyType_Check(ob)) { - PyErr_Format( - PyExc_TypeError, - "%s.__bases__ must be tuple of old- or new-style classes, not '%s'", - type->tp_name, Py_TYPE(ob)->tp_name); - return -1; - } - if (PyType_Check(ob)) { - if (PyType_IsSubtype((PyTypeObject*)ob, type)) { - PyErr_SetString(PyExc_TypeError, - "a __bases__ item causes an inheritance cycle"); - return -1; - } - } - } - - new_base = best_base(value); - - if (!new_base) { - return -1; - } - - if (!compatible_for_assignment(type->tp_base, new_base, "__bases__")) - return -1; - - Py_INCREF(new_base); - Py_INCREF(value); - - old_bases = type->tp_bases; - old_base = type->tp_base; - old_mro = type->tp_mro; - - type->tp_bases = value; - type->tp_base = new_base; - - if (mro_internal(type) < 0) { - goto bail; - } - - temp = PyList_New(0); - if (!temp) - goto bail; - - r = mro_subclasses(type, temp); - - if (r < 0) { - for (i = 0; i < PyList_Size(temp); i++) { - PyTypeObject* cls; - PyObject* mro; - PyArg_UnpackTuple(PyList_GET_ITEM(temp, i), - "", 2, 2, &cls, &mro); - Py_INCREF(mro); - ob = cls->tp_mro; - cls->tp_mro = mro; - Py_DECREF(ob); - } - Py_DECREF(temp); - goto bail; - } - - Py_DECREF(temp); - - /* any base that was in __bases__ but now isn't, we - need to remove |type| from its tp_subclasses. - conversely, any class now in __bases__ that wasn't - needs to have |type| added to its subclasses. */ - - /* for now, sod that: just remove from all old_bases, - add to all new_bases */ - - for (i = PyTuple_GET_SIZE(old_bases) - 1; i >= 0; i--) { - ob = PyTuple_GET_ITEM(old_bases, i); - if (PyType_Check(ob)) { - remove_subclass( - (PyTypeObject*)ob, type); - } - } - - for (i = PyTuple_GET_SIZE(value) - 1; i >= 0; i--) { - ob = PyTuple_GET_ITEM(value, i); - if (PyType_Check(ob)) { - if (add_subclass((PyTypeObject*)ob, type) < 0) - r = -1; - } - } - - update_all_slots(type); - - Py_DECREF(old_bases); - Py_DECREF(old_base); - Py_DECREF(old_mro); - - return r; + Py_ssize_t i; + int r = 0; + PyObject *ob, *temp; + PyTypeObject *new_base, *old_base; + PyObject *old_bases, *old_mro; + + if (!(type->tp_flags & Py_TPFLAGS_HEAPTYPE)) { + PyErr_Format(PyExc_TypeError, + "can't set %s.__bases__", type->tp_name); + return -1; + } + if (!value) { + PyErr_Format(PyExc_TypeError, + "can't delete %s.__bases__", type->tp_name); + return -1; + } + if (!PyTuple_Check(value)) { + PyErr_Format(PyExc_TypeError, + "can only assign tuple to %s.__bases__, not %s", + type->tp_name, Py_TYPE(value)->tp_name); + return -1; + } + if (PyTuple_GET_SIZE(value) == 0) { + PyErr_Format(PyExc_TypeError, + "can only assign non-empty tuple to %s.__bases__, not ()", + type->tp_name); + return -1; + } + for (i = 0; i < PyTuple_GET_SIZE(value); i++) { + ob = PyTuple_GET_ITEM(value, i); + if (!PyType_Check(ob)) { + PyErr_Format( + PyExc_TypeError, + "%s.__bases__ must be tuple of old- or new-style classes, not '%s'", + type->tp_name, Py_TYPE(ob)->tp_name); + return -1; + } + if (PyType_Check(ob)) { + if (PyType_IsSubtype((PyTypeObject*)ob, type)) { + PyErr_SetString(PyExc_TypeError, + "a __bases__ item causes an inheritance cycle"); + return -1; + } + } + } + + new_base = best_base(value); + + if (!new_base) { + return -1; + } + + if (!compatible_for_assignment(type->tp_base, new_base, "__bases__")) + return -1; + + Py_INCREF(new_base); + Py_INCREF(value); + + old_bases = type->tp_bases; + old_base = type->tp_base; + old_mro = type->tp_mro; + + type->tp_bases = value; + type->tp_base = new_base; + + if (mro_internal(type) < 0) { + goto bail; + } + + temp = PyList_New(0); + if (!temp) + goto bail; + + r = mro_subclasses(type, temp); + + if (r < 0) { + for (i = 0; i < PyList_Size(temp); i++) { + PyTypeObject* cls; + PyObject* mro; + PyArg_UnpackTuple(PyList_GET_ITEM(temp, i), + "", 2, 2, &cls, &mro); + Py_INCREF(mro); + ob = cls->tp_mro; + cls->tp_mro = mro; + Py_DECREF(ob); + } + Py_DECREF(temp); + goto bail; + } + + Py_DECREF(temp); + + /* any base that was in __bases__ but now isn't, we + need to remove |type| from its tp_subclasses. + conversely, any class now in __bases__ that wasn't + needs to have |type| added to its subclasses. */ + + /* for now, sod that: just remove from all old_bases, + add to all new_bases */ + + for (i = PyTuple_GET_SIZE(old_bases) - 1; i >= 0; i--) { + ob = PyTuple_GET_ITEM(old_bases, i); + if (PyType_Check(ob)) { + remove_subclass( + (PyTypeObject*)ob, type); + } + } + + for (i = PyTuple_GET_SIZE(value) - 1; i >= 0; i--) { + ob = PyTuple_GET_ITEM(value, i); + if (PyType_Check(ob)) { + if (add_subclass((PyTypeObject*)ob, type) < 0) + r = -1; + } + } + + update_all_slots(type); + + Py_DECREF(old_bases); + Py_DECREF(old_base); + Py_DECREF(old_mro); + + return r; bail: - Py_DECREF(type->tp_bases); - Py_DECREF(type->tp_base); - if (type->tp_mro != old_mro) { - Py_DECREF(type->tp_mro); - } + Py_DECREF(type->tp_bases); + Py_DECREF(type->tp_base); + if (type->tp_mro != old_mro) { + Py_DECREF(type->tp_mro); + } - type->tp_bases = old_bases; - type->tp_base = old_base; - type->tp_mro = old_mro; + type->tp_bases = old_bases; + type->tp_base = old_base; + type->tp_mro = old_mro; - return -1; + return -1; } static PyObject * type_dict(PyTypeObject *type, void *context) { - if (type->tp_dict == NULL) { - Py_INCREF(Py_None); - return Py_None; - } - return PyDictProxy_New(type->tp_dict); + if (type->tp_dict == NULL) { + Py_INCREF(Py_None); + return Py_None; + } + return PyDictProxy_New(type->tp_dict); } static PyObject * type_get_doc(PyTypeObject *type, void *context) { - PyObject *result; - if (!(type->tp_flags & Py_TPFLAGS_HEAPTYPE) && type->tp_doc != NULL) - return PyUnicode_FromString(type->tp_doc); - result = PyDict_GetItemString(type->tp_dict, "__doc__"); - if (result == NULL) { - result = Py_None; - Py_INCREF(result); - } - else if (Py_TYPE(result)->tp_descr_get) { - result = Py_TYPE(result)->tp_descr_get(result, NULL, - (PyObject *)type); - } - else { - Py_INCREF(result); - } - return result; + PyObject *result; + if (!(type->tp_flags & Py_TPFLAGS_HEAPTYPE) && type->tp_doc != NULL) + return PyUnicode_FromString(type->tp_doc); + result = PyDict_GetItemString(type->tp_dict, "__doc__"); + if (result == NULL) { + result = Py_None; + Py_INCREF(result); + } + else if (Py_TYPE(result)->tp_descr_get) { + result = Py_TYPE(result)->tp_descr_get(result, NULL, + (PyObject *)type); + } + else { + Py_INCREF(result); + } + return result; } static PyObject * type___instancecheck__(PyObject *type, PyObject *inst) { - switch (_PyObject_RealIsInstance(inst, type)) { - case -1: - return NULL; - case 0: - Py_RETURN_FALSE; - default: - Py_RETURN_TRUE; - } + switch (_PyObject_RealIsInstance(inst, type)) { + case -1: + return NULL; + case 0: + Py_RETURN_FALSE; + default: + Py_RETURN_TRUE; + } } static PyObject * type___subclasscheck__(PyObject *type, PyObject *inst) { - switch (_PyObject_RealIsSubclass(inst, type)) { - case -1: - return NULL; - case 0: - Py_RETURN_FALSE; - default: - Py_RETURN_TRUE; - } + switch (_PyObject_RealIsSubclass(inst, type)) { + case -1: + return NULL; + case 0: + Py_RETURN_FALSE; + default: + Py_RETURN_TRUE; + } } static PyGetSetDef type_getsets[] = { - {"__name__", (getter)type_name, (setter)type_set_name, NULL}, - {"__bases__", (getter)type_get_bases, (setter)type_set_bases, NULL}, - {"__module__", (getter)type_module, (setter)type_set_module, NULL}, - {"__abstractmethods__", (getter)type_abstractmethods, - (setter)type_set_abstractmethods, NULL}, - {"__dict__", (getter)type_dict, NULL, NULL}, - {"__doc__", (getter)type_get_doc, NULL, NULL}, - {0} + {"__name__", (getter)type_name, (setter)type_set_name, NULL}, + {"__bases__", (getter)type_get_bases, (setter)type_set_bases, NULL}, + {"__module__", (getter)type_module, (setter)type_set_module, NULL}, + {"__abstractmethods__", (getter)type_abstractmethods, + (setter)type_set_abstractmethods, NULL}, + {"__dict__", (getter)type_dict, NULL, NULL}, + {"__doc__", (getter)type_get_doc, NULL, NULL}, + {0} }; static PyObject * type_repr(PyTypeObject *type) { - PyObject *mod, *name, *rtn; + PyObject *mod, *name, *rtn; - mod = type_module(type, NULL); - if (mod == NULL) - PyErr_Clear(); - else if (!PyUnicode_Check(mod)) { - Py_DECREF(mod); - mod = NULL; - } - name = type_name(type, NULL); - if (name == NULL) - return NULL; + mod = type_module(type, NULL); + if (mod == NULL) + PyErr_Clear(); + else if (!PyUnicode_Check(mod)) { + Py_DECREF(mod); + mod = NULL; + } + name = type_name(type, NULL); + if (name == NULL) + return NULL; - if (mod != NULL && PyUnicode_CompareWithASCIIString(mod, "builtins")) - rtn = PyUnicode_FromFormat("<class '%U.%U'>", mod, name); - else - rtn = PyUnicode_FromFormat("<class '%s'>", type->tp_name); + if (mod != NULL && PyUnicode_CompareWithASCIIString(mod, "builtins")) + rtn = PyUnicode_FromFormat("<class '%U.%U'>", mod, name); + else + rtn = PyUnicode_FromFormat("<class '%s'>", type->tp_name); - Py_XDECREF(mod); - Py_DECREF(name); - return rtn; + Py_XDECREF(mod); + Py_DECREF(name); + return rtn; } static PyObject * type_call(PyTypeObject *type, PyObject *args, PyObject *kwds) { - PyObject *obj; - - if (type->tp_new == NULL) { - PyErr_Format(PyExc_TypeError, - "cannot create '%.100s' instances", - type->tp_name); - return NULL; - } - - obj = type->tp_new(type, args, kwds); - if (obj != NULL) { - /* Ugly exception: when the call was type(something), - don't call tp_init on the result. */ - if (type == &PyType_Type && - PyTuple_Check(args) && PyTuple_GET_SIZE(args) == 1 && - (kwds == NULL || - (PyDict_Check(kwds) && PyDict_Size(kwds) == 0))) - return obj; - /* If the returned object is not an instance of type, - it won't be initialized. */ - if (!PyType_IsSubtype(Py_TYPE(obj), type)) - return obj; - type = Py_TYPE(obj); - if (type->tp_init != NULL && - type->tp_init(obj, args, kwds) < 0) { - Py_DECREF(obj); - obj = NULL; - } - } - return obj; + PyObject *obj; + + if (type->tp_new == NULL) { + PyErr_Format(PyExc_TypeError, + "cannot create '%.100s' instances", + type->tp_name); + return NULL; + } + + obj = type->tp_new(type, args, kwds); + if (obj != NULL) { + /* Ugly exception: when the call was type(something), + don't call tp_init on the result. */ + if (type == &PyType_Type && + PyTuple_Check(args) && PyTuple_GET_SIZE(args) == 1 && + (kwds == NULL || + (PyDict_Check(kwds) && PyDict_Size(kwds) == 0))) + return obj; + /* If the returned object is not an instance of type, + it won't be initialized. */ + if (!PyType_IsSubtype(Py_TYPE(obj), type)) + return obj; + type = Py_TYPE(obj); + if (type->tp_init != NULL && + type->tp_init(obj, args, kwds) < 0) { + Py_DECREF(obj); + obj = NULL; + } + } + return obj; } PyObject * PyType_GenericAlloc(PyTypeObject *type, Py_ssize_t nitems) { - PyObject *obj; - const size_t size = _PyObject_VAR_SIZE(type, nitems+1); - /* note that we need to add one, for the sentinel */ + PyObject *obj; + const size_t size = _PyObject_VAR_SIZE(type, nitems+1); + /* note that we need to add one, for the sentinel */ - if (PyType_IS_GC(type)) - obj = _PyObject_GC_Malloc(size); - else - obj = (PyObject *)PyObject_MALLOC(size); + if (PyType_IS_GC(type)) + obj = _PyObject_GC_Malloc(size); + else + obj = (PyObject *)PyObject_MALLOC(size); - if (obj == NULL) - return PyErr_NoMemory(); + if (obj == NULL) + return PyErr_NoMemory(); - memset(obj, '\0', size); + memset(obj, '\0', size); - if (type->tp_flags & Py_TPFLAGS_HEAPTYPE) - Py_INCREF(type); + if (type->tp_flags & Py_TPFLAGS_HEAPTYPE) + Py_INCREF(type); - if (type->tp_itemsize == 0) - PyObject_INIT(obj, type); - else - (void) PyObject_INIT_VAR((PyVarObject *)obj, type, nitems); + if (type->tp_itemsize == 0) + PyObject_INIT(obj, type); + else + (void) PyObject_INIT_VAR((PyVarObject *)obj, type, nitems); - if (PyType_IS_GC(type)) - _PyObject_GC_TRACK(obj); - return obj; + if (PyType_IS_GC(type)) + _PyObject_GC_TRACK(obj); + return obj; } PyObject * PyType_GenericNew(PyTypeObject *type, PyObject *args, PyObject *kwds) { - return type->tp_alloc(type, 0); + return type->tp_alloc(type, 0); } /* Helpers for subtyping */ @@ -725,341 +725,341 @@ PyType_GenericNew(PyTypeObject *type, PyObject *args, PyObject *kwds) static int traverse_slots(PyTypeObject *type, PyObject *self, visitproc visit, void *arg) { - Py_ssize_t i, n; - PyMemberDef *mp; - - n = Py_SIZE(type); - mp = PyHeapType_GET_MEMBERS((PyHeapTypeObject *)type); - for (i = 0; i < n; i++, mp++) { - if (mp->type == T_OBJECT_EX) { - char *addr = (char *)self + mp->offset; - PyObject *obj = *(PyObject **)addr; - if (obj != NULL) { - int err = visit(obj, arg); - if (err) - return err; - } - } - } - return 0; + Py_ssize_t i, n; + PyMemberDef *mp; + + n = Py_SIZE(type); + mp = PyHeapType_GET_MEMBERS((PyHeapTypeObject *)type); + for (i = 0; i < n; i++, mp++) { + if (mp->type == T_OBJECT_EX) { + char *addr = (char *)self + mp->offset; + PyObject *obj = *(PyObject **)addr; + if (obj != NULL) { + int err = visit(obj, arg); + if (err) + return err; + } + } + } + return 0; } static int subtype_traverse(PyObject *self, visitproc visit, void *arg) { - PyTypeObject *type, *base; - traverseproc basetraverse; - - /* Find the nearest base with a different tp_traverse, - and traverse slots while we're at it */ - type = Py_TYPE(self); - base = type; - while ((basetraverse = base->tp_traverse) == subtype_traverse) { - if (Py_SIZE(base)) { - int err = traverse_slots(base, self, visit, arg); - if (err) - return err; - } - base = base->tp_base; - assert(base); - } - - if (type->tp_dictoffset != base->tp_dictoffset) { - PyObject **dictptr = _PyObject_GetDictPtr(self); - if (dictptr && *dictptr) - Py_VISIT(*dictptr); - } - - if (type->tp_flags & Py_TPFLAGS_HEAPTYPE) - /* For a heaptype, the instances count as references - to the type. Traverse the type so the collector - can find cycles involving this link. */ - Py_VISIT(type); - - if (basetraverse) - return basetraverse(self, visit, arg); - return 0; + PyTypeObject *type, *base; + traverseproc basetraverse; + + /* Find the nearest base with a different tp_traverse, + and traverse slots while we're at it */ + type = Py_TYPE(self); + base = type; + while ((basetraverse = base->tp_traverse) == subtype_traverse) { + if (Py_SIZE(base)) { + int err = traverse_slots(base, self, visit, arg); + if (err) + return err; + } + base = base->tp_base; + assert(base); + } + + if (type->tp_dictoffset != base->tp_dictoffset) { + PyObject **dictptr = _PyObject_GetDictPtr(self); + if (dictptr && *dictptr) + Py_VISIT(*dictptr); + } + + if (type->tp_flags & Py_TPFLAGS_HEAPTYPE) + /* For a heaptype, the instances count as references + to the type. Traverse the type so the collector + can find cycles involving this link. */ + Py_VISIT(type); + + if (basetraverse) + return basetraverse(self, visit, arg); + return 0; } static void clear_slots(PyTypeObject *type, PyObject *self) { - Py_ssize_t i, n; - PyMemberDef *mp; - - n = Py_SIZE(type); - mp = PyHeapType_GET_MEMBERS((PyHeapTypeObject *)type); - for (i = 0; i < n; i++, mp++) { - if (mp->type == T_OBJECT_EX && !(mp->flags & READONLY)) { - char *addr = (char *)self + mp->offset; - PyObject *obj = *(PyObject **)addr; - if (obj != NULL) { - *(PyObject **)addr = NULL; - Py_DECREF(obj); - } - } - } + Py_ssize_t i, n; + PyMemberDef *mp; + + n = Py_SIZE(type); + mp = PyHeapType_GET_MEMBERS((PyHeapTypeObject *)type); + for (i = 0; i < n; i++, mp++) { + if (mp->type == T_OBJECT_EX && !(mp->flags & READONLY)) { + char *addr = (char *)self + mp->offset; + PyObject *obj = *(PyObject **)addr; + if (obj != NULL) { + *(PyObject **)addr = NULL; + Py_DECREF(obj); + } + } + } } static int subtype_clear(PyObject *self) { - PyTypeObject *type, *base; - inquiry baseclear; + PyTypeObject *type, *base; + inquiry baseclear; - /* Find the nearest base with a different tp_clear - and clear slots while we're at it */ - type = Py_TYPE(self); - base = type; - while ((baseclear = base->tp_clear) == subtype_clear) { - if (Py_SIZE(base)) - clear_slots(base, self); - base = base->tp_base; - assert(base); - } + /* Find the nearest base with a different tp_clear + and clear slots while we're at it */ + type = Py_TYPE(self); + base = type; + while ((baseclear = base->tp_clear) == subtype_clear) { + if (Py_SIZE(base)) + clear_slots(base, self); + base = base->tp_base; + assert(base); + } - /* There's no need to clear the instance dict (if any); - the collector will call its tp_clear handler. */ + /* There's no need to clear the instance dict (if any); + the collector will call its tp_clear handler. */ - if (baseclear) - return baseclear(self); - return 0; + if (baseclear) + return baseclear(self); + return 0; } static void subtype_dealloc(PyObject *self) { - PyTypeObject *type, *base; - destructor basedealloc; - - /* Extract the type; we expect it to be a heap type */ - type = Py_TYPE(self); - assert(type->tp_flags & Py_TPFLAGS_HEAPTYPE); - - /* Test whether the type has GC exactly once */ - - if (!PyType_IS_GC(type)) { - /* It's really rare to find a dynamic type that doesn't have - GC; it can only happen when deriving from 'object' and not - adding any slots or instance variables. This allows - certain simplifications: there's no need to call - clear_slots(), or DECREF the dict, or clear weakrefs. */ - - /* Maybe call finalizer; exit early if resurrected */ - if (type->tp_del) { - type->tp_del(self); - if (self->ob_refcnt > 0) - return; - } - - /* Find the nearest base with a different tp_dealloc */ - base = type; - while ((basedealloc = base->tp_dealloc) == subtype_dealloc) { - assert(Py_SIZE(base) == 0); - base = base->tp_base; - assert(base); - } - - /* Extract the type again; tp_del may have changed it */ - type = Py_TYPE(self); - - /* Call the base tp_dealloc() */ - assert(basedealloc); - basedealloc(self); - - /* Can't reference self beyond this point */ - Py_DECREF(type); - - /* Done */ - return; - } - - /* We get here only if the type has GC */ - - /* UnTrack and re-Track around the trashcan macro, alas */ - /* See explanation at end of function for full disclosure */ - PyObject_GC_UnTrack(self); - ++_PyTrash_delete_nesting; - Py_TRASHCAN_SAFE_BEGIN(self); - --_PyTrash_delete_nesting; - /* DO NOT restore GC tracking at this point. weakref callbacks - * (if any, and whether directly here or indirectly in something we - * call) may trigger GC, and if self is tracked at that point, it - * will look like trash to GC and GC will try to delete self again. - */ - - /* Find the nearest base with a different tp_dealloc */ - base = type; - while ((basedealloc = base->tp_dealloc) == subtype_dealloc) { - base = base->tp_base; - assert(base); - } - - /* If we added a weaklist, we clear it. Do this *before* calling - the finalizer (__del__), clearing slots, or clearing the instance - dict. */ - - if (type->tp_weaklistoffset && !base->tp_weaklistoffset) - PyObject_ClearWeakRefs(self); - - /* Maybe call finalizer; exit early if resurrected */ - if (type->tp_del) { - _PyObject_GC_TRACK(self); - type->tp_del(self); - if (self->ob_refcnt > 0) - goto endlabel; /* resurrected */ - else - _PyObject_GC_UNTRACK(self); - /* New weakrefs could be created during the finalizer call. - If this occurs, clear them out without calling their - finalizers since they might rely on part of the object - being finalized that has already been destroyed. */ - if (type->tp_weaklistoffset && !base->tp_weaklistoffset) { - /* Modeled after GET_WEAKREFS_LISTPTR() */ - PyWeakReference **list = (PyWeakReference **) \ - PyObject_GET_WEAKREFS_LISTPTR(self); - while (*list) - _PyWeakref_ClearRef(*list); - } - } - - /* Clear slots up to the nearest base with a different tp_dealloc */ - base = type; - while ((basedealloc = base->tp_dealloc) == subtype_dealloc) { - if (Py_SIZE(base)) - clear_slots(base, self); - base = base->tp_base; - assert(base); - } - - /* If we added a dict, DECREF it */ - if (type->tp_dictoffset && !base->tp_dictoffset) { - PyObject **dictptr = _PyObject_GetDictPtr(self); - if (dictptr != NULL) { - PyObject *dict = *dictptr; - if (dict != NULL) { - Py_DECREF(dict); - *dictptr = NULL; - } - } - } - - /* Extract the type again; tp_del may have changed it */ - type = Py_TYPE(self); - - /* Call the base tp_dealloc(); first retrack self if - * basedealloc knows about gc. - */ - if (PyType_IS_GC(base)) - _PyObject_GC_TRACK(self); - assert(basedealloc); - basedealloc(self); - - /* Can't reference self beyond this point */ - Py_DECREF(type); + PyTypeObject *type, *base; + destructor basedealloc; + + /* Extract the type; we expect it to be a heap type */ + type = Py_TYPE(self); + assert(type->tp_flags & Py_TPFLAGS_HEAPTYPE); + + /* Test whether the type has GC exactly once */ + + if (!PyType_IS_GC(type)) { + /* It's really rare to find a dynamic type that doesn't have + GC; it can only happen when deriving from 'object' and not + adding any slots or instance variables. This allows + certain simplifications: there's no need to call + clear_slots(), or DECREF the dict, or clear weakrefs. */ + + /* Maybe call finalizer; exit early if resurrected */ + if (type->tp_del) { + type->tp_del(self); + if (self->ob_refcnt > 0) + return; + } + + /* Find the nearest base with a different tp_dealloc */ + base = type; + while ((basedealloc = base->tp_dealloc) == subtype_dealloc) { + assert(Py_SIZE(base) == 0); + base = base->tp_base; + assert(base); + } + + /* Extract the type again; tp_del may have changed it */ + type = Py_TYPE(self); + + /* Call the base tp_dealloc() */ + assert(basedealloc); + basedealloc(self); + + /* Can't reference self beyond this point */ + Py_DECREF(type); + + /* Done */ + return; + } + + /* We get here only if the type has GC */ + + /* UnTrack and re-Track around the trashcan macro, alas */ + /* See explanation at end of function for full disclosure */ + PyObject_GC_UnTrack(self); + ++_PyTrash_delete_nesting; + Py_TRASHCAN_SAFE_BEGIN(self); + --_PyTrash_delete_nesting; + /* DO NOT restore GC tracking at this point. weakref callbacks + * (if any, and whether directly here or indirectly in something we + * call) may trigger GC, and if self is tracked at that point, it + * will look like trash to GC and GC will try to delete self again. + */ + + /* Find the nearest base with a different tp_dealloc */ + base = type; + while ((basedealloc = base->tp_dealloc) == subtype_dealloc) { + base = base->tp_base; + assert(base); + } + + /* If we added a weaklist, we clear it. Do this *before* calling + the finalizer (__del__), clearing slots, or clearing the instance + dict. */ + + if (type->tp_weaklistoffset && !base->tp_weaklistoffset) + PyObject_ClearWeakRefs(self); + + /* Maybe call finalizer; exit early if resurrected */ + if (type->tp_del) { + _PyObject_GC_TRACK(self); + type->tp_del(self); + if (self->ob_refcnt > 0) + goto endlabel; /* resurrected */ + else + _PyObject_GC_UNTRACK(self); + /* New weakrefs could be created during the finalizer call. + If this occurs, clear them out without calling their + finalizers since they might rely on part of the object + being finalized that has already been destroyed. */ + if (type->tp_weaklistoffset && !base->tp_weaklistoffset) { + /* Modeled after GET_WEAKREFS_LISTPTR() */ + PyWeakReference **list = (PyWeakReference **) \ + PyObject_GET_WEAKREFS_LISTPTR(self); + while (*list) + _PyWeakref_ClearRef(*list); + } + } + + /* Clear slots up to the nearest base with a different tp_dealloc */ + base = type; + while ((basedealloc = base->tp_dealloc) == subtype_dealloc) { + if (Py_SIZE(base)) + clear_slots(base, self); + base = base->tp_base; + assert(base); + } + + /* If we added a dict, DECREF it */ + if (type->tp_dictoffset && !base->tp_dictoffset) { + PyObject **dictptr = _PyObject_GetDictPtr(self); + if (dictptr != NULL) { + PyObject *dict = *dictptr; + if (dict != NULL) { + Py_DECREF(dict); + *dictptr = NULL; + } + } + } + + /* Extract the type again; tp_del may have changed it */ + type = Py_TYPE(self); + + /* Call the base tp_dealloc(); first retrack self if + * basedealloc knows about gc. + */ + if (PyType_IS_GC(base)) + _PyObject_GC_TRACK(self); + assert(basedealloc); + basedealloc(self); + + /* Can't reference self beyond this point */ + Py_DECREF(type); endlabel: - ++_PyTrash_delete_nesting; - Py_TRASHCAN_SAFE_END(self); - --_PyTrash_delete_nesting; + ++_PyTrash_delete_nesting; + Py_TRASHCAN_SAFE_END(self); + --_PyTrash_delete_nesting; - /* Explanation of the weirdness around the trashcan macros: + /* Explanation of the weirdness around the trashcan macros: - Q. What do the trashcan macros do? + Q. What do the trashcan macros do? - A. Read the comment titled "Trashcan mechanism" in object.h. - For one, this explains why there must be a call to GC-untrack - before the trashcan begin macro. Without understanding the - trashcan code, the answers to the following questions don't make - sense. + A. Read the comment titled "Trashcan mechanism" in object.h. + For one, this explains why there must be a call to GC-untrack + before the trashcan begin macro. Without understanding the + trashcan code, the answers to the following questions don't make + sense. - Q. Why do we GC-untrack before the trashcan and then immediately - GC-track again afterward? + Q. Why do we GC-untrack before the trashcan and then immediately + GC-track again afterward? - A. In the case that the base class is GC-aware, the base class - probably GC-untracks the object. If it does that using the - UNTRACK macro, this will crash when the object is already - untracked. Because we don't know what the base class does, the - only safe thing is to make sure the object is tracked when we - call the base class dealloc. But... The trashcan begin macro - requires that the object is *untracked* before it is called. So - the dance becomes: + A. In the case that the base class is GC-aware, the base class + probably GC-untracks the object. If it does that using the + UNTRACK macro, this will crash when the object is already + untracked. Because we don't know what the base class does, the + only safe thing is to make sure the object is tracked when we + call the base class dealloc. But... The trashcan begin macro + requires that the object is *untracked* before it is called. So + the dance becomes: - GC untrack - trashcan begin - GC track + GC untrack + trashcan begin + GC track - Q. Why did the last question say "immediately GC-track again"? - It's nowhere near immediately. + Q. Why did the last question say "immediately GC-track again"? + It's nowhere near immediately. - A. Because the code *used* to re-track immediately. Bad Idea. - self has a refcount of 0, and if gc ever gets its hands on it - (which can happen if any weakref callback gets invoked), it - looks like trash to gc too, and gc also tries to delete self - then. But we're already deleting self. Double dealloction is - a subtle disaster. + A. Because the code *used* to re-track immediately. Bad Idea. + self has a refcount of 0, and if gc ever gets its hands on it + (which can happen if any weakref callback gets invoked), it + looks like trash to gc too, and gc also tries to delete self + then. But we're already deleting self. Double dealloction is + a subtle disaster. - Q. Why the bizarre (net-zero) manipulation of - _PyTrash_delete_nesting around the trashcan macros? + Q. Why the bizarre (net-zero) manipulation of + _PyTrash_delete_nesting around the trashcan macros? - A. Some base classes (e.g. list) also use the trashcan mechanism. - The following scenario used to be possible: + A. Some base classes (e.g. list) also use the trashcan mechanism. + The following scenario used to be possible: - - suppose the trashcan level is one below the trashcan limit + - suppose the trashcan level is one below the trashcan limit - - subtype_dealloc() is called + - subtype_dealloc() is called - - the trashcan limit is not yet reached, so the trashcan level - is incremented and the code between trashcan begin and end is - executed + - the trashcan limit is not yet reached, so the trashcan level + is incremented and the code between trashcan begin and end is + executed - - this destroys much of the object's contents, including its - slots and __dict__ + - this destroys much of the object's contents, including its + slots and __dict__ - - basedealloc() is called; this is really list_dealloc(), or - some other type which also uses the trashcan macros + - basedealloc() is called; this is really list_dealloc(), or + some other type which also uses the trashcan macros - - the trashcan limit is now reached, so the object is put on the - trashcan's to-be-deleted-later list + - the trashcan limit is now reached, so the object is put on the + trashcan's to-be-deleted-later list - - basedealloc() returns + - basedealloc() returns - - subtype_dealloc() decrefs the object's type + - subtype_dealloc() decrefs the object's type - - subtype_dealloc() returns + - subtype_dealloc() returns - - later, the trashcan code starts deleting the objects from its - to-be-deleted-later list + - later, the trashcan code starts deleting the objects from its + to-be-deleted-later list - - subtype_dealloc() is called *AGAIN* for the same object + - subtype_dealloc() is called *AGAIN* for the same object - - at the very least (if the destroyed slots and __dict__ don't - cause problems) the object's type gets decref'ed a second - time, which is *BAD*!!! + - at the very least (if the destroyed slots and __dict__ don't + cause problems) the object's type gets decref'ed a second + time, which is *BAD*!!! - The remedy is to make sure that if the code between trashcan - begin and end in subtype_dealloc() is called, the code between - trashcan begin and end in basedealloc() will also be called. - This is done by decrementing the level after passing into the - trashcan block, and incrementing it just before leaving the - block. + The remedy is to make sure that if the code between trashcan + begin and end in subtype_dealloc() is called, the code between + trashcan begin and end in basedealloc() will also be called. + This is done by decrementing the level after passing into the + trashcan block, and incrementing it just before leaving the + block. - But now it's possible that a chain of objects consisting solely - of objects whose deallocator is subtype_dealloc() will defeat - the trashcan mechanism completely: the decremented level means - that the effective level never reaches the limit. Therefore, we - *increment* the level *before* entering the trashcan block, and - matchingly decrement it after leaving. This means the trashcan - code will trigger a little early, but that's no big deal. + But now it's possible that a chain of objects consisting solely + of objects whose deallocator is subtype_dealloc() will defeat + the trashcan mechanism completely: the decremented level means + that the effective level never reaches the limit. Therefore, we + *increment* the level *before* entering the trashcan block, and + matchingly decrement it after leaving. This means the trashcan + code will trigger a little early, but that's no big deal. - Q. Are there any live examples of code in need of all this - complexity? + Q. Are there any live examples of code in need of all this + complexity? - A. Yes. See SF bug 668433 for code that crashed (when Python was - compiled in debug mode) before the trashcan level manipulations - were added. For more discussion, see SF patches 581742, 575073 - and bug 574207. - */ + A. Yes. See SF bug 668433 for code that crashed (when Python was + compiled in debug mode) before the trashcan level manipulations + were added. For more discussion, see SF patches 581742, 575073 + and bug 574207. + */ } static PyTypeObject *solid_base(PyTypeObject *type); @@ -1069,36 +1069,36 @@ static PyTypeObject *solid_base(PyTypeObject *type); int PyType_IsSubtype(PyTypeObject *a, PyTypeObject *b) { - PyObject *mro; - - mro = a->tp_mro; - if (mro != NULL) { - /* Deal with multiple inheritance without recursion - by walking the MRO tuple */ - Py_ssize_t i, n; - assert(PyTuple_Check(mro)); - n = PyTuple_GET_SIZE(mro); - for (i = 0; i < n; i++) { - if (PyTuple_GET_ITEM(mro, i) == (PyObject *)b) - return 1; - } - return 0; - } - else { - /* a is not completely initilized yet; follow tp_base */ - do { - if (a == b) - return 1; - a = a->tp_base; - } while (a != NULL); - return b == &PyBaseObject_Type; - } + PyObject *mro; + + mro = a->tp_mro; + if (mro != NULL) { + /* Deal with multiple inheritance without recursion + by walking the MRO tuple */ + Py_ssize_t i, n; + assert(PyTuple_Check(mro)); + n = PyTuple_GET_SIZE(mro); + for (i = 0; i < n; i++) { + if (PyTuple_GET_ITEM(mro, i) == (PyObject *)b) + return 1; + } + return 0; + } + else { + /* a is not completely initilized yet; follow tp_base */ + do { + if (a == b) + return 1; + a = a->tp_base; + } while (a != NULL); + return b == &PyBaseObject_Type; + } } /* Internal routines to do a method lookup in the type without looking in the instance dictionary (so we can't use PyObject_GetAttr) but still binding - it to the instance. The arguments are the object, + it to the instance. The arguments are the object, the method name as a C string, and the address of a static variable used to cache the interned Python string. @@ -1115,75 +1115,75 @@ PyType_IsSubtype(PyTypeObject *a, PyTypeObject *b) static PyObject * lookup_maybe(PyObject *self, char *attrstr, PyObject **attrobj) { - PyObject *res; + PyObject *res; - if (*attrobj == NULL) { - *attrobj = PyUnicode_InternFromString(attrstr); - if (*attrobj == NULL) - return NULL; - } - res = _PyType_Lookup(Py_TYPE(self), *attrobj); - if (res != NULL) { - descrgetfunc f; - if ((f = Py_TYPE(res)->tp_descr_get) == NULL) - Py_INCREF(res); - else - res = f(res, self, (PyObject *)(Py_TYPE(self))); - } - return res; + if (*attrobj == NULL) { + *attrobj = PyUnicode_InternFromString(attrstr); + if (*attrobj == NULL) + return NULL; + } + res = _PyType_Lookup(Py_TYPE(self), *attrobj); + if (res != NULL) { + descrgetfunc f; + if ((f = Py_TYPE(res)->tp_descr_get) == NULL) + Py_INCREF(res); + else + res = f(res, self, (PyObject *)(Py_TYPE(self))); + } + return res; } static PyObject * lookup_method(PyObject *self, char *attrstr, PyObject **attrobj) { - PyObject *res = lookup_maybe(self, attrstr, attrobj); - if (res == NULL && !PyErr_Occurred()) - PyErr_SetObject(PyExc_AttributeError, *attrobj); - return res; + PyObject *res = lookup_maybe(self, attrstr, attrobj); + if (res == NULL && !PyErr_Occurred()) + PyErr_SetObject(PyExc_AttributeError, *attrobj); + return res; } PyObject * _PyObject_LookupSpecial(PyObject *self, char *attrstr, PyObject **attrobj) { - return lookup_maybe(self, attrstr, attrobj); + return lookup_maybe(self, attrstr, attrobj); } /* A variation of PyObject_CallMethod that uses lookup_method() - instead of PyObject_GetAttrString(). This uses the same convention + instead of PyObject_GetAttrString(). This uses the same convention as lookup_method to cache the interned name string object. */ static PyObject * call_method(PyObject *o, char *name, PyObject **nameobj, char *format, ...) { - va_list va; - PyObject *args, *func = 0, *retval; - va_start(va, format); + va_list va; + PyObject *args, *func = 0, *retval; + va_start(va, format); - func = lookup_maybe(o, name, nameobj); - if (func == NULL) { - va_end(va); - if (!PyErr_Occurred()) - PyErr_SetObject(PyExc_AttributeError, *nameobj); - return NULL; - } + func = lookup_maybe(o, name, nameobj); + if (func == NULL) { + va_end(va); + if (!PyErr_Occurred()) + PyErr_SetObject(PyExc_AttributeError, *nameobj); + return NULL; + } - if (format && *format) - args = Py_VaBuildValue(format, va); - else - args = PyTuple_New(0); + if (format && *format) + args = Py_VaBuildValue(format, va); + else + args = PyTuple_New(0); - va_end(va); + va_end(va); - if (args == NULL) - return NULL; + if (args == NULL) + return NULL; - assert(PyTuple_Check(args)); - retval = PyObject_Call(func, args, NULL); + assert(PyTuple_Check(args)); + retval = PyObject_Call(func, args, NULL); - Py_DECREF(args); - Py_DECREF(func); + Py_DECREF(args); + Py_DECREF(func); - return retval; + return retval; } /* Clone of call_method() that returns NotImplemented when the lookup fails. */ @@ -1191,37 +1191,37 @@ call_method(PyObject *o, char *name, PyObject **nameobj, char *format, ...) static PyObject * call_maybe(PyObject *o, char *name, PyObject **nameobj, char *format, ...) { - va_list va; - PyObject *args, *func = 0, *retval; - va_start(va, format); + va_list va; + PyObject *args, *func = 0, *retval; + va_start(va, format); - func = lookup_maybe(o, name, nameobj); - if (func == NULL) { - va_end(va); - if (!PyErr_Occurred()) { - Py_INCREF(Py_NotImplemented); - return Py_NotImplemented; - } - return NULL; - } + func = lookup_maybe(o, name, nameobj); + if (func == NULL) { + va_end(va); + if (!PyErr_Occurred()) { + Py_INCREF(Py_NotImplemented); + return Py_NotImplemented; + } + return NULL; + } - if (format && *format) - args = Py_VaBuildValue(format, va); - else - args = PyTuple_New(0); + if (format && *format) + args = Py_VaBuildValue(format, va); + else + args = PyTuple_New(0); - va_end(va); + va_end(va); - if (args == NULL) - return NULL; + if (args == NULL) + return NULL; - assert(PyTuple_Check(args)); - retval = PyObject_Call(func, args, NULL); + assert(PyTuple_Check(args)); + retval = PyObject_Call(func, args, NULL); - Py_DECREF(args); - Py_DECREF(func); + Py_DECREF(args); + Py_DECREF(func); - return retval; + return retval; } /* @@ -1254,68 +1254,68 @@ call_maybe(PyObject *o, char *name, PyObject **nameobj, char *format, ...) static int tail_contains(PyObject *list, int whence, PyObject *o) { - Py_ssize_t j, size; - size = PyList_GET_SIZE(list); + Py_ssize_t j, size; + size = PyList_GET_SIZE(list); - for (j = whence+1; j < size; j++) { - if (PyList_GET_ITEM(list, j) == o) - return 1; - } - return 0; + for (j = whence+1; j < size; j++) { + if (PyList_GET_ITEM(list, j) == o) + return 1; + } + return 0; } static PyObject * class_name(PyObject *cls) { - PyObject *name = PyObject_GetAttrString(cls, "__name__"); - if (name == NULL) { - PyErr_Clear(); - Py_XDECREF(name); - name = PyObject_Repr(cls); - } - if (name == NULL) - return NULL; - if (!PyUnicode_Check(name)) { - Py_DECREF(name); - return NULL; - } - return name; + PyObject *name = PyObject_GetAttrString(cls, "__name__"); + if (name == NULL) { + PyErr_Clear(); + Py_XDECREF(name); + name = PyObject_Repr(cls); + } + if (name == NULL) + return NULL; + if (!PyUnicode_Check(name)) { + Py_DECREF(name); + return NULL; + } + return name; } static int check_duplicates(PyObject *list) { - Py_ssize_t i, j, n; - /* Let's use a quadratic time algorithm, - assuming that the bases lists is short. - */ - n = PyList_GET_SIZE(list); - for (i = 0; i < n; i++) { - PyObject *o = PyList_GET_ITEM(list, i); - for (j = i + 1; j < n; j++) { - if (PyList_GET_ITEM(list, j) == o) { - o = class_name(o); - if (o != NULL) { - PyErr_Format(PyExc_TypeError, - "duplicate base class %U", - o); - Py_DECREF(o); - } else { - PyErr_SetString(PyExc_TypeError, - "duplicate base class"); - } - return -1; - } - } - } - return 0; + Py_ssize_t i, j, n; + /* Let's use a quadratic time algorithm, + assuming that the bases lists is short. + */ + n = PyList_GET_SIZE(list); + for (i = 0; i < n; i++) { + PyObject *o = PyList_GET_ITEM(list, i); + for (j = i + 1; j < n; j++) { + if (PyList_GET_ITEM(list, j) == o) { + o = class_name(o); + if (o != NULL) { + PyErr_Format(PyExc_TypeError, + "duplicate base class %U", + o); + Py_DECREF(o); + } else { + PyErr_SetString(PyExc_TypeError, + "duplicate base class"); + } + return -1; + } + } + } + return 0; } /* Raise a TypeError for an MRO order disagreement. It's hard to produce a good error message. In the absence of better insight into error reporting, report the classes that were candidates - to be put next into the MRO. There is some conflict between the + to be put next into the MRO. There is some conflict between the order in which they should be put in the MRO, but it's hard to diagnose what constraint can't be satisfied. */ @@ -1323,252 +1323,252 @@ check_duplicates(PyObject *list) static void set_mro_error(PyObject *to_merge, int *remain) { - Py_ssize_t i, n, off, to_merge_size; - char buf[1000]; - PyObject *k, *v; - PyObject *set = PyDict_New(); - if (!set) return; - - to_merge_size = PyList_GET_SIZE(to_merge); - for (i = 0; i < to_merge_size; i++) { - PyObject *L = PyList_GET_ITEM(to_merge, i); - if (remain[i] < PyList_GET_SIZE(L)) { - PyObject *c = PyList_GET_ITEM(L, remain[i]); - if (PyDict_SetItem(set, c, Py_None) < 0) { - Py_DECREF(set); - return; - } - } - } - n = PyDict_Size(set); - - off = PyOS_snprintf(buf, sizeof(buf), "Cannot create a \ + Py_ssize_t i, n, off, to_merge_size; + char buf[1000]; + PyObject *k, *v; + PyObject *set = PyDict_New(); + if (!set) return; + + to_merge_size = PyList_GET_SIZE(to_merge); + for (i = 0; i < to_merge_size; i++) { + PyObject *L = PyList_GET_ITEM(to_merge, i); + if (remain[i] < PyList_GET_SIZE(L)) { + PyObject *c = PyList_GET_ITEM(L, remain[i]); + if (PyDict_SetItem(set, c, Py_None) < 0) { + Py_DECREF(set); + return; + } + } + } + n = PyDict_Size(set); + + off = PyOS_snprintf(buf, sizeof(buf), "Cannot create a \ consistent method resolution\norder (MRO) for bases"); - i = 0; - while (PyDict_Next(set, &i, &k, &v) && (size_t)off < sizeof(buf)) { - PyObject *name = class_name(k); - off += PyOS_snprintf(buf + off, sizeof(buf) - off, " %s", - name ? _PyUnicode_AsString(name) : "?"); - Py_XDECREF(name); - if (--n && (size_t)(off+1) < sizeof(buf)) { - buf[off++] = ','; - buf[off] = '\0'; - } - } - PyErr_SetString(PyExc_TypeError, buf); - Py_DECREF(set); + i = 0; + while (PyDict_Next(set, &i, &k, &v) && (size_t)off < sizeof(buf)) { + PyObject *name = class_name(k); + off += PyOS_snprintf(buf + off, sizeof(buf) - off, " %s", + name ? _PyUnicode_AsString(name) : "?"); + Py_XDECREF(name); + if (--n && (size_t)(off+1) < sizeof(buf)) { + buf[off++] = ','; + buf[off] = '\0'; + } + } + PyErr_SetString(PyExc_TypeError, buf); + Py_DECREF(set); } static int pmerge(PyObject *acc, PyObject* to_merge) { - Py_ssize_t i, j, to_merge_size, empty_cnt; - int *remain; - int ok; - - to_merge_size = PyList_GET_SIZE(to_merge); - - /* remain stores an index into each sublist of to_merge. - remain[i] is the index of the next base in to_merge[i] - that is not included in acc. - */ - remain = (int *)PyMem_MALLOC(SIZEOF_INT*to_merge_size); - if (remain == NULL) - return -1; - for (i = 0; i < to_merge_size; i++) - remain[i] = 0; + Py_ssize_t i, j, to_merge_size, empty_cnt; + int *remain; + int ok; + + to_merge_size = PyList_GET_SIZE(to_merge); + + /* remain stores an index into each sublist of to_merge. + remain[i] is the index of the next base in to_merge[i] + that is not included in acc. + */ + remain = (int *)PyMem_MALLOC(SIZEOF_INT*to_merge_size); + if (remain == NULL) + return -1; + for (i = 0; i < to_merge_size; i++) + remain[i] = 0; again: - empty_cnt = 0; - for (i = 0; i < to_merge_size; i++) { - PyObject *candidate; - - PyObject *cur_list = PyList_GET_ITEM(to_merge, i); - - if (remain[i] >= PyList_GET_SIZE(cur_list)) { - empty_cnt++; - continue; - } - - /* Choose next candidate for MRO. - - The input sequences alone can determine the choice. - If not, choose the class which appears in the MRO - of the earliest direct superclass of the new class. - */ - - candidate = PyList_GET_ITEM(cur_list, remain[i]); - for (j = 0; j < to_merge_size; j++) { - PyObject *j_lst = PyList_GET_ITEM(to_merge, j); - if (tail_contains(j_lst, remain[j], candidate)) { - goto skip; /* continue outer loop */ - } - } - ok = PyList_Append(acc, candidate); - if (ok < 0) { - PyMem_Free(remain); - return -1; - } - for (j = 0; j < to_merge_size; j++) { - PyObject *j_lst = PyList_GET_ITEM(to_merge, j); - if (remain[j] < PyList_GET_SIZE(j_lst) && - PyList_GET_ITEM(j_lst, remain[j]) == candidate) { - remain[j]++; - } - } - goto again; - skip: ; - } - - if (empty_cnt == to_merge_size) { - PyMem_FREE(remain); - return 0; - } - set_mro_error(to_merge, remain); - PyMem_FREE(remain); - return -1; + empty_cnt = 0; + for (i = 0; i < to_merge_size; i++) { + PyObject *candidate; + + PyObject *cur_list = PyList_GET_ITEM(to_merge, i); + + if (remain[i] >= PyList_GET_SIZE(cur_list)) { + empty_cnt++; + continue; + } + + /* Choose next candidate for MRO. + + The input sequences alone can determine the choice. + If not, choose the class which appears in the MRO + of the earliest direct superclass of the new class. + */ + + candidate = PyList_GET_ITEM(cur_list, remain[i]); + for (j = 0; j < to_merge_size; j++) { + PyObject *j_lst = PyList_GET_ITEM(to_merge, j); + if (tail_contains(j_lst, remain[j], candidate)) { + goto skip; /* continue outer loop */ + } + } + ok = PyList_Append(acc, candidate); + if (ok < 0) { + PyMem_Free(remain); + return -1; + } + for (j = 0; j < to_merge_size; j++) { + PyObject *j_lst = PyList_GET_ITEM(to_merge, j); + if (remain[j] < PyList_GET_SIZE(j_lst) && + PyList_GET_ITEM(j_lst, remain[j]) == candidate) { + remain[j]++; + } + } + goto again; + skip: ; + } + + if (empty_cnt == to_merge_size) { + PyMem_FREE(remain); + return 0; + } + set_mro_error(to_merge, remain); + PyMem_FREE(remain); + return -1; } static PyObject * mro_implementation(PyTypeObject *type) { - Py_ssize_t i, n; - int ok; - PyObject *bases, *result; - PyObject *to_merge, *bases_aslist; - - if (type->tp_dict == NULL) { - if (PyType_Ready(type) < 0) - return NULL; - } - - /* Find a superclass linearization that honors the constraints - of the explicit lists of bases and the constraints implied by - each base class. - - to_merge is a list of lists, where each list is a superclass - linearization implied by a base class. The last element of - to_merge is the declared list of bases. - */ - - bases = type->tp_bases; - n = PyTuple_GET_SIZE(bases); - - to_merge = PyList_New(n+1); - if (to_merge == NULL) - return NULL; - - for (i = 0; i < n; i++) { - PyObject *base = PyTuple_GET_ITEM(bases, i); - PyObject *parentMRO; - parentMRO = PySequence_List(((PyTypeObject*)base)->tp_mro); - if (parentMRO == NULL) { - Py_DECREF(to_merge); - return NULL; - } - - PyList_SET_ITEM(to_merge, i, parentMRO); - } - - bases_aslist = PySequence_List(bases); - if (bases_aslist == NULL) { - Py_DECREF(to_merge); - return NULL; - } - /* This is just a basic sanity check. */ - if (check_duplicates(bases_aslist) < 0) { - Py_DECREF(to_merge); - Py_DECREF(bases_aslist); - return NULL; - } - PyList_SET_ITEM(to_merge, n, bases_aslist); - - result = Py_BuildValue("[O]", (PyObject *)type); - if (result == NULL) { - Py_DECREF(to_merge); - return NULL; - } - - ok = pmerge(result, to_merge); - Py_DECREF(to_merge); - if (ok < 0) { - Py_DECREF(result); - return NULL; - } - - return result; + Py_ssize_t i, n; + int ok; + PyObject *bases, *result; + PyObject *to_merge, *bases_aslist; + + if (type->tp_dict == NULL) { + if (PyType_Ready(type) < 0) + return NULL; + } + + /* Find a superclass linearization that honors the constraints + of the explicit lists of bases and the constraints implied by + each base class. + + to_merge is a list of lists, where each list is a superclass + linearization implied by a base class. The last element of + to_merge is the declared list of bases. + */ + + bases = type->tp_bases; + n = PyTuple_GET_SIZE(bases); + + to_merge = PyList_New(n+1); + if (to_merge == NULL) + return NULL; + + for (i = 0; i < n; i++) { + PyObject *base = PyTuple_GET_ITEM(bases, i); + PyObject *parentMRO; + parentMRO = PySequence_List(((PyTypeObject*)base)->tp_mro); + if (parentMRO == NULL) { + Py_DECREF(to_merge); + return NULL; + } + + PyList_SET_ITEM(to_merge, i, parentMRO); + } + + bases_aslist = PySequence_List(bases); + if (bases_aslist == NULL) { + Py_DECREF(to_merge); + return NULL; + } + /* This is just a basic sanity check. */ + if (check_duplicates(bases_aslist) < 0) { + Py_DECREF(to_merge); + Py_DECREF(bases_aslist); + return NULL; + } + PyList_SET_ITEM(to_merge, n, bases_aslist); + + result = Py_BuildValue("[O]", (PyObject *)type); + if (result == NULL) { + Py_DECREF(to_merge); + return NULL; + } + + ok = pmerge(result, to_merge); + Py_DECREF(to_merge); + if (ok < 0) { + Py_DECREF(result); + return NULL; + } + + return result; } static PyObject * mro_external(PyObject *self) { - PyTypeObject *type = (PyTypeObject *)self; + PyTypeObject *type = (PyTypeObject *)self; - return mro_implementation(type); + return mro_implementation(type); } static int mro_internal(PyTypeObject *type) { - PyObject *mro, *result, *tuple; - int checkit = 0; - - if (Py_TYPE(type) == &PyType_Type) { - result = mro_implementation(type); - } - else { - static PyObject *mro_str; - checkit = 1; - mro = lookup_method((PyObject *)type, "mro", &mro_str); - if (mro == NULL) - return -1; - result = PyObject_CallObject(mro, NULL); - Py_DECREF(mro); - } - if (result == NULL) - return -1; - tuple = PySequence_Tuple(result); - Py_DECREF(result); - if (tuple == NULL) - return -1; - if (checkit) { - Py_ssize_t i, len; - PyObject *cls; - PyTypeObject *solid; - - solid = solid_base(type); - - len = PyTuple_GET_SIZE(tuple); - - for (i = 0; i < len; i++) { - PyTypeObject *t; - cls = PyTuple_GET_ITEM(tuple, i); - if (!PyType_Check(cls)) { - PyErr_Format(PyExc_TypeError, - "mro() returned a non-class ('%.500s')", - Py_TYPE(cls)->tp_name); - Py_DECREF(tuple); - return -1; - } - t = (PyTypeObject*)cls; - if (!PyType_IsSubtype(solid, solid_base(t))) { - PyErr_Format(PyExc_TypeError, - "mro() returned base with unsuitable layout ('%.500s')", - t->tp_name); - Py_DECREF(tuple); - return -1; - } - } - } - type->tp_mro = tuple; - - type_mro_modified(type, type->tp_mro); - /* corner case: the old-style super class might have been hidden - from the custom MRO */ - type_mro_modified(type, type->tp_bases); - - PyType_Modified(type); - - return 0; + PyObject *mro, *result, *tuple; + int checkit = 0; + + if (Py_TYPE(type) == &PyType_Type) { + result = mro_implementation(type); + } + else { + static PyObject *mro_str; + checkit = 1; + mro = lookup_method((PyObject *)type, "mro", &mro_str); + if (mro == NULL) + return -1; + result = PyObject_CallObject(mro, NULL); + Py_DECREF(mro); + } + if (result == NULL) + return -1; + tuple = PySequence_Tuple(result); + Py_DECREF(result); + if (tuple == NULL) + return -1; + if (checkit) { + Py_ssize_t i, len; + PyObject *cls; + PyTypeObject *solid; + + solid = solid_base(type); + + len = PyTuple_GET_SIZE(tuple); + + for (i = 0; i < len; i++) { + PyTypeObject *t; + cls = PyTuple_GET_ITEM(tuple, i); + if (!PyType_Check(cls)) { + PyErr_Format(PyExc_TypeError, + "mro() returned a non-class ('%.500s')", + Py_TYPE(cls)->tp_name); + Py_DECREF(tuple); + return -1; + } + t = (PyTypeObject*)cls; + if (!PyType_IsSubtype(solid, solid_base(t))) { + PyErr_Format(PyExc_TypeError, + "mro() returned base with unsuitable layout ('%.500s')", + t->tp_name); + Py_DECREF(tuple); + return -1; + } + } + } + type->tp_mro = tuple; + + type_mro_modified(type, type->tp_mro); + /* corner case: the old-style super class might have been hidden + from the custom MRO */ + type_mro_modified(type, type->tp_bases); + + PyType_Modified(type); + + return 0; } @@ -1578,90 +1578,90 @@ mro_internal(PyTypeObject *type) static PyTypeObject * best_base(PyObject *bases) { - Py_ssize_t i, n; - PyTypeObject *base, *winner, *candidate, *base_i; - PyObject *base_proto; - - assert(PyTuple_Check(bases)); - n = PyTuple_GET_SIZE(bases); - assert(n > 0); - base = NULL; - winner = NULL; - for (i = 0; i < n; i++) { - base_proto = PyTuple_GET_ITEM(bases, i); - if (!PyType_Check(base_proto)) { - PyErr_SetString( - PyExc_TypeError, - "bases must be types"); - return NULL; - } - base_i = (PyTypeObject *)base_proto; - if (base_i->tp_dict == NULL) { - if (PyType_Ready(base_i) < 0) - return NULL; - } - candidate = solid_base(base_i); - if (winner == NULL) { - winner = candidate; - base = base_i; - } - else if (PyType_IsSubtype(winner, candidate)) - ; - else if (PyType_IsSubtype(candidate, winner)) { - winner = candidate; - base = base_i; - } - else { - PyErr_SetString( - PyExc_TypeError, - "multiple bases have " - "instance lay-out conflict"); - return NULL; - } - } - if (base == NULL) - PyErr_SetString(PyExc_TypeError, - "a new-style class can't have only classic bases"); - return base; + Py_ssize_t i, n; + PyTypeObject *base, *winner, *candidate, *base_i; + PyObject *base_proto; + + assert(PyTuple_Check(bases)); + n = PyTuple_GET_SIZE(bases); + assert(n > 0); + base = NULL; + winner = NULL; + for (i = 0; i < n; i++) { + base_proto = PyTuple_GET_ITEM(bases, i); + if (!PyType_Check(base_proto)) { + PyErr_SetString( + PyExc_TypeError, + "bases must be types"); + return NULL; + } + base_i = (PyTypeObject *)base_proto; + if (base_i->tp_dict == NULL) { + if (PyType_Ready(base_i) < 0) + return NULL; + } + candidate = solid_base(base_i); + if (winner == NULL) { + winner = candidate; + base = base_i; + } + else if (PyType_IsSubtype(winner, candidate)) + ; + else if (PyType_IsSubtype(candidate, winner)) { + winner = candidate; + base = base_i; + } + else { + PyErr_SetString( + PyExc_TypeError, + "multiple bases have " + "instance lay-out conflict"); + return NULL; + } + } + if (base == NULL) + PyErr_SetString(PyExc_TypeError, + "a new-style class can't have only classic bases"); + return base; } static int extra_ivars(PyTypeObject *type, PyTypeObject *base) { - size_t t_size = type->tp_basicsize; - size_t b_size = base->tp_basicsize; + size_t t_size = type->tp_basicsize; + size_t b_size = base->tp_basicsize; - assert(t_size >= b_size); /* Else type smaller than base! */ - if (type->tp_itemsize || base->tp_itemsize) { - /* If itemsize is involved, stricter rules */ - return t_size != b_size || - type->tp_itemsize != base->tp_itemsize; - } - if (type->tp_weaklistoffset && base->tp_weaklistoffset == 0 && - type->tp_weaklistoffset + sizeof(PyObject *) == t_size && - type->tp_flags & Py_TPFLAGS_HEAPTYPE) - t_size -= sizeof(PyObject *); - if (type->tp_dictoffset && base->tp_dictoffset == 0 && - type->tp_dictoffset + sizeof(PyObject *) == t_size && - type->tp_flags & Py_TPFLAGS_HEAPTYPE) - t_size -= sizeof(PyObject *); + assert(t_size >= b_size); /* Else type smaller than base! */ + if (type->tp_itemsize || base->tp_itemsize) { + /* If itemsize is involved, stricter rules */ + return t_size != b_size || + type->tp_itemsize != base->tp_itemsize; + } + if (type->tp_weaklistoffset && base->tp_weaklistoffset == 0 && + type->tp_weaklistoffset + sizeof(PyObject *) == t_size && + type->tp_flags & Py_TPFLAGS_HEAPTYPE) + t_size -= sizeof(PyObject *); + if (type->tp_dictoffset && base->tp_dictoffset == 0 && + type->tp_dictoffset + sizeof(PyObject *) == t_size && + type->tp_flags & Py_TPFLAGS_HEAPTYPE) + t_size -= sizeof(PyObject *); - return t_size != b_size; + return t_size != b_size; } static PyTypeObject * solid_base(PyTypeObject *type) { - PyTypeObject *base; + PyTypeObject *base; - if (type->tp_base) - base = solid_base(type->tp_base); - else - base = &PyBaseObject_Type; - if (extra_ivars(type, base)) - return type; - else - return base; + if (type->tp_base) + base = solid_base(type->tp_base); + else + base = &PyBaseObject_Type; + if (extra_ivars(type, base)) + return type; + else + return base; } static void object_dealloc(PyObject *); @@ -1677,180 +1677,180 @@ static void fixup_slot_dispatchers(PyTypeObject *); static PyTypeObject * get_builtin_base_with_dict(PyTypeObject *type) { - while (type->tp_base != NULL) { - if (type->tp_dictoffset != 0 && - !(type->tp_flags & Py_TPFLAGS_HEAPTYPE)) - return type; - type = type->tp_base; - } - return NULL; + while (type->tp_base != NULL) { + if (type->tp_dictoffset != 0 && + !(type->tp_flags & Py_TPFLAGS_HEAPTYPE)) + return type; + type = type->tp_base; + } + return NULL; } static PyObject * get_dict_descriptor(PyTypeObject *type) { - static PyObject *dict_str; - PyObject *descr; + static PyObject *dict_str; + PyObject *descr; - if (dict_str == NULL) { - dict_str = PyUnicode_InternFromString("__dict__"); - if (dict_str == NULL) - return NULL; - } - descr = _PyType_Lookup(type, dict_str); - if (descr == NULL || !PyDescr_IsData(descr)) - return NULL; + if (dict_str == NULL) { + dict_str = PyUnicode_InternFromString("__dict__"); + if (dict_str == NULL) + return NULL; + } + descr = _PyType_Lookup(type, dict_str); + if (descr == NULL || !PyDescr_IsData(descr)) + return NULL; - return descr; + return descr; } static void raise_dict_descr_error(PyObject *obj) { - PyErr_Format(PyExc_TypeError, - "this __dict__ descriptor does not support " - "'%.200s' objects", Py_TYPE(obj)->tp_name); + PyErr_Format(PyExc_TypeError, + "this __dict__ descriptor does not support " + "'%.200s' objects", Py_TYPE(obj)->tp_name); } static PyObject * subtype_dict(PyObject *obj, void *context) { - PyObject **dictptr; - PyObject *dict; - PyTypeObject *base; - - base = get_builtin_base_with_dict(Py_TYPE(obj)); - if (base != NULL) { - descrgetfunc func; - PyObject *descr = get_dict_descriptor(base); - if (descr == NULL) { - raise_dict_descr_error(obj); - return NULL; - } - func = Py_TYPE(descr)->tp_descr_get; - if (func == NULL) { - raise_dict_descr_error(obj); - return NULL; - } - return func(descr, obj, (PyObject *)(Py_TYPE(obj))); - } - - dictptr = _PyObject_GetDictPtr(obj); - if (dictptr == NULL) { - PyErr_SetString(PyExc_AttributeError, - "This object has no __dict__"); - return NULL; - } - dict = *dictptr; - if (dict == NULL) - *dictptr = dict = PyDict_New(); - Py_XINCREF(dict); - return dict; + PyObject **dictptr; + PyObject *dict; + PyTypeObject *base; + + base = get_builtin_base_with_dict(Py_TYPE(obj)); + if (base != NULL) { + descrgetfunc func; + PyObject *descr = get_dict_descriptor(base); + if (descr == NULL) { + raise_dict_descr_error(obj); + return NULL; + } + func = Py_TYPE(descr)->tp_descr_get; + if (func == NULL) { + raise_dict_descr_error(obj); + return NULL; + } + return func(descr, obj, (PyObject *)(Py_TYPE(obj))); + } + + dictptr = _PyObject_GetDictPtr(obj); + if (dictptr == NULL) { + PyErr_SetString(PyExc_AttributeError, + "This object has no __dict__"); + return NULL; + } + dict = *dictptr; + if (dict == NULL) + *dictptr = dict = PyDict_New(); + Py_XINCREF(dict); + return dict; } static int subtype_setdict(PyObject *obj, PyObject *value, void *context) { - PyObject **dictptr; - PyObject *dict; - PyTypeObject *base; - - base = get_builtin_base_with_dict(Py_TYPE(obj)); - if (base != NULL) { - descrsetfunc func; - PyObject *descr = get_dict_descriptor(base); - if (descr == NULL) { - raise_dict_descr_error(obj); - return -1; - } - func = Py_TYPE(descr)->tp_descr_set; - if (func == NULL) { - raise_dict_descr_error(obj); - return -1; - } - return func(descr, obj, value); - } - - dictptr = _PyObject_GetDictPtr(obj); - if (dictptr == NULL) { - PyErr_SetString(PyExc_AttributeError, - "This object has no __dict__"); - return -1; - } - if (value != NULL && !PyDict_Check(value)) { - PyErr_Format(PyExc_TypeError, - "__dict__ must be set to a dictionary, " - "not a '%.200s'", Py_TYPE(value)->tp_name); - return -1; - } - dict = *dictptr; - Py_XINCREF(value); - *dictptr = value; - Py_XDECREF(dict); - return 0; + PyObject **dictptr; + PyObject *dict; + PyTypeObject *base; + + base = get_builtin_base_with_dict(Py_TYPE(obj)); + if (base != NULL) { + descrsetfunc func; + PyObject *descr = get_dict_descriptor(base); + if (descr == NULL) { + raise_dict_descr_error(obj); + return -1; + } + func = Py_TYPE(descr)->tp_descr_set; + if (func == NULL) { + raise_dict_descr_error(obj); + return -1; + } + return func(descr, obj, value); + } + + dictptr = _PyObject_GetDictPtr(obj); + if (dictptr == NULL) { + PyErr_SetString(PyExc_AttributeError, + "This object has no __dict__"); + return -1; + } + if (value != NULL && !PyDict_Check(value)) { + PyErr_Format(PyExc_TypeError, + "__dict__ must be set to a dictionary, " + "not a '%.200s'", Py_TYPE(value)->tp_name); + return -1; + } + dict = *dictptr; + Py_XINCREF(value); + *dictptr = value; + Py_XDECREF(dict); + return 0; } static PyObject * subtype_getweakref(PyObject *obj, void *context) { - PyObject **weaklistptr; - PyObject *result; - - if (Py_TYPE(obj)->tp_weaklistoffset == 0) { - PyErr_SetString(PyExc_AttributeError, - "This object has no __weakref__"); - return NULL; - } - assert(Py_TYPE(obj)->tp_weaklistoffset > 0); - assert(Py_TYPE(obj)->tp_weaklistoffset + sizeof(PyObject *) <= - (size_t)(Py_TYPE(obj)->tp_basicsize)); - weaklistptr = (PyObject **) - ((char *)obj + Py_TYPE(obj)->tp_weaklistoffset); - if (*weaklistptr == NULL) - result = Py_None; - else - result = *weaklistptr; - Py_INCREF(result); - return result; + PyObject **weaklistptr; + PyObject *result; + + if (Py_TYPE(obj)->tp_weaklistoffset == 0) { + PyErr_SetString(PyExc_AttributeError, + "This object has no __weakref__"); + return NULL; + } + assert(Py_TYPE(obj)->tp_weaklistoffset > 0); + assert(Py_TYPE(obj)->tp_weaklistoffset + sizeof(PyObject *) <= + (size_t)(Py_TYPE(obj)->tp_basicsize)); + weaklistptr = (PyObject **) + ((char *)obj + Py_TYPE(obj)->tp_weaklistoffset); + if (*weaklistptr == NULL) + result = Py_None; + else + result = *weaklistptr; + Py_INCREF(result); + return result; } /* Three variants on the subtype_getsets list. */ static PyGetSetDef subtype_getsets_full[] = { - {"__dict__", subtype_dict, subtype_setdict, - PyDoc_STR("dictionary for instance variables (if defined)")}, - {"__weakref__", subtype_getweakref, NULL, - PyDoc_STR("list of weak references to the object (if defined)")}, - {0} + {"__dict__", subtype_dict, subtype_setdict, + PyDoc_STR("dictionary for instance variables (if defined)")}, + {"__weakref__", subtype_getweakref, NULL, + PyDoc_STR("list of weak references to the object (if defined)")}, + {0} }; static PyGetSetDef subtype_getsets_dict_only[] = { - {"__dict__", subtype_dict, subtype_setdict, - PyDoc_STR("dictionary for instance variables (if defined)")}, - {0} + {"__dict__", subtype_dict, subtype_setdict, + PyDoc_STR("dictionary for instance variables (if defined)")}, + {0} }; static PyGetSetDef subtype_getsets_weakref_only[] = { - {"__weakref__", subtype_getweakref, NULL, - PyDoc_STR("list of weak references to the object (if defined)")}, - {0} + {"__weakref__", subtype_getweakref, NULL, + PyDoc_STR("list of weak references to the object (if defined)")}, + {0} }; static int valid_identifier(PyObject *s) { - if (!PyUnicode_Check(s)) { - PyErr_Format(PyExc_TypeError, - "__slots__ items must be strings, not '%.200s'", - Py_TYPE(s)->tp_name); - return 0; - } - if (!PyUnicode_IsIdentifier(s)) { - PyErr_SetString(PyExc_TypeError, - "__slots__ must be identifiers"); - return 0; - } - return 1; + if (!PyUnicode_Check(s)) { + PyErr_Format(PyExc_TypeError, + "__slots__ items must be strings, not '%.200s'", + Py_TYPE(s)->tp_name); + return 0; + } + if (!PyUnicode_IsIdentifier(s)) { + PyErr_SetString(PyExc_TypeError, + "__slots__ must be identifiers"); + return 0; + } + return 1; } /* Forward */ @@ -1860,435 +1860,435 @@ object_init(PyObject *self, PyObject *args, PyObject *kwds); static int type_init(PyObject *cls, PyObject *args, PyObject *kwds) { - int res; + int res; - assert(args != NULL && PyTuple_Check(args)); - assert(kwds == NULL || PyDict_Check(kwds)); + assert(args != NULL && PyTuple_Check(args)); + assert(kwds == NULL || PyDict_Check(kwds)); - if (kwds != NULL && PyDict_Check(kwds) && PyDict_Size(kwds) != 0) { - PyErr_SetString(PyExc_TypeError, - "type.__init__() takes no keyword arguments"); - return -1; - } + if (kwds != NULL && PyDict_Check(kwds) && PyDict_Size(kwds) != 0) { + PyErr_SetString(PyExc_TypeError, + "type.__init__() takes no keyword arguments"); + return -1; + } - if (args != NULL && PyTuple_Check(args) && - (PyTuple_GET_SIZE(args) != 1 && PyTuple_GET_SIZE(args) != 3)) { - PyErr_SetString(PyExc_TypeError, - "type.__init__() takes 1 or 3 arguments"); - return -1; - } + if (args != NULL && PyTuple_Check(args) && + (PyTuple_GET_SIZE(args) != 1 && PyTuple_GET_SIZE(args) != 3)) { + PyErr_SetString(PyExc_TypeError, + "type.__init__() takes 1 or 3 arguments"); + return -1; + } - /* Call object.__init__(self) now. */ - /* XXX Could call super(type, cls).__init__() but what's the point? */ - args = PyTuple_GetSlice(args, 0, 0); - res = object_init(cls, args, NULL); - Py_DECREF(args); - return res; + /* Call object.__init__(self) now. */ + /* XXX Could call super(type, cls).__init__() but what's the point? */ + args = PyTuple_GetSlice(args, 0, 0); + res = object_init(cls, args, NULL); + Py_DECREF(args); + return res; } static PyObject * type_new(PyTypeObject *metatype, PyObject *args, PyObject *kwds) { - PyObject *name, *bases, *dict; - static char *kwlist[] = {"name", "bases", "dict", 0}; - PyObject *slots, *tmp, *newslots; - PyTypeObject *type, *base, *tmptype, *winner; - PyHeapTypeObject *et; - PyMemberDef *mp; - Py_ssize_t i, nbases, nslots, slotoffset, add_dict, add_weak; - int j, may_add_dict, may_add_weak; - - assert(args != NULL && PyTuple_Check(args)); - assert(kwds == NULL || PyDict_Check(kwds)); - - /* Special case: type(x) should return x->ob_type */ - { - const Py_ssize_t nargs = PyTuple_GET_SIZE(args); - const Py_ssize_t nkwds = kwds == NULL ? 0 : PyDict_Size(kwds); - - if (PyType_CheckExact(metatype) && nargs == 1 && nkwds == 0) { - PyObject *x = PyTuple_GET_ITEM(args, 0); - Py_INCREF(Py_TYPE(x)); - return (PyObject *) Py_TYPE(x); - } - - /* SF bug 475327 -- if that didn't trigger, we need 3 - arguments. but PyArg_ParseTupleAndKeywords below may give - a msg saying type() needs exactly 3. */ - if (nargs + nkwds != 3) { - PyErr_SetString(PyExc_TypeError, - "type() takes 1 or 3 arguments"); - return NULL; - } - } - - /* Check arguments: (name, bases, dict) */ - if (!PyArg_ParseTupleAndKeywords(args, kwds, "UO!O!:type", kwlist, - &name, - &PyTuple_Type, &bases, - &PyDict_Type, &dict)) - return NULL; - - /* Determine the proper metatype to deal with this, - and check for metatype conflicts while we're at it. - Note that if some other metatype wins to contract, - it's possible that its instances are not types. */ - nbases = PyTuple_GET_SIZE(bases); - winner = metatype; - for (i = 0; i < nbases; i++) { - tmp = PyTuple_GET_ITEM(bases, i); - tmptype = Py_TYPE(tmp); - if (PyType_IsSubtype(winner, tmptype)) - continue; - if (PyType_IsSubtype(tmptype, winner)) { - winner = tmptype; - continue; - } - PyErr_SetString(PyExc_TypeError, - "metaclass conflict: " - "the metaclass of a derived class " - "must be a (non-strict) subclass " - "of the metaclasses of all its bases"); - return NULL; - } - if (winner != metatype) { - if (winner->tp_new != type_new) /* Pass it to the winner */ - return winner->tp_new(winner, args, kwds); - metatype = winner; - } - - /* Adjust for empty tuple bases */ - if (nbases == 0) { - bases = PyTuple_Pack(1, &PyBaseObject_Type); - if (bases == NULL) - return NULL; - nbases = 1; - } - else - Py_INCREF(bases); - - /* XXX From here until type is allocated, "return NULL" leaks bases! */ - - /* Calculate best base, and check that all bases are type objects */ - base = best_base(bases); - if (base == NULL) { - Py_DECREF(bases); - return NULL; - } - if (!PyType_HasFeature(base, Py_TPFLAGS_BASETYPE)) { - PyErr_Format(PyExc_TypeError, - "type '%.100s' is not an acceptable base type", - base->tp_name); - Py_DECREF(bases); - return NULL; - } - - /* Check for a __slots__ sequence variable in dict, and count it */ - slots = PyDict_GetItemString(dict, "__slots__"); - nslots = 0; - add_dict = 0; - add_weak = 0; - may_add_dict = base->tp_dictoffset == 0; - may_add_weak = base->tp_weaklistoffset == 0 && base->tp_itemsize == 0; - if (slots == NULL) { - if (may_add_dict) { - add_dict++; - } - if (may_add_weak) { - add_weak++; - } - } - else { - /* Have slots */ - - /* Make it into a tuple */ - if (PyUnicode_Check(slots)) - slots = PyTuple_Pack(1, slots); - else - slots = PySequence_Tuple(slots); - if (slots == NULL) { - Py_DECREF(bases); - return NULL; - } - assert(PyTuple_Check(slots)); - - /* Are slots allowed? */ - nslots = PyTuple_GET_SIZE(slots); - if (nslots > 0 && base->tp_itemsize != 0) { - PyErr_Format(PyExc_TypeError, - "nonempty __slots__ " - "not supported for subtype of '%s'", - base->tp_name); - bad_slots: - Py_DECREF(bases); - Py_DECREF(slots); - return NULL; - } - - /* Check for valid slot names and two special cases */ - for (i = 0; i < nslots; i++) { - PyObject *tmp = PyTuple_GET_ITEM(slots, i); - if (!valid_identifier(tmp)) - goto bad_slots; - assert(PyUnicode_Check(tmp)); - if (PyUnicode_CompareWithASCIIString(tmp, "__dict__") == 0) { - if (!may_add_dict || add_dict) { - PyErr_SetString(PyExc_TypeError, - "__dict__ slot disallowed: " - "we already got one"); - goto bad_slots; - } - add_dict++; - } - if (PyUnicode_CompareWithASCIIString(tmp, "__weakref__") == 0) { - if (!may_add_weak || add_weak) { - PyErr_SetString(PyExc_TypeError, - "__weakref__ slot disallowed: " - "either we already got one, " - "or __itemsize__ != 0"); - goto bad_slots; - } - add_weak++; - } - } - - /* Copy slots into a list, mangle names and sort them. - Sorted names are needed for __class__ assignment. - Convert them back to tuple at the end. - */ - newslots = PyList_New(nslots - add_dict - add_weak); - if (newslots == NULL) - goto bad_slots; - for (i = j = 0; i < nslots; i++) { - tmp = PyTuple_GET_ITEM(slots, i); - if ((add_dict && - PyUnicode_CompareWithASCIIString(tmp, "__dict__") == 0) || - (add_weak && - PyUnicode_CompareWithASCIIString(tmp, "__weakref__") == 0)) - continue; - tmp =_Py_Mangle(name, tmp); - if (!tmp) - goto bad_slots; - PyList_SET_ITEM(newslots, j, tmp); - j++; - } - assert(j == nslots - add_dict - add_weak); - nslots = j; - Py_DECREF(slots); - if (PyList_Sort(newslots) == -1) { - Py_DECREF(bases); - Py_DECREF(newslots); - return NULL; - } - slots = PyList_AsTuple(newslots); - Py_DECREF(newslots); - if (slots == NULL) { - Py_DECREF(bases); - return NULL; - } - - /* Secondary bases may provide weakrefs or dict */ - if (nbases > 1 && - ((may_add_dict && !add_dict) || - (may_add_weak && !add_weak))) { - for (i = 0; i < nbases; i++) { - tmp = PyTuple_GET_ITEM(bases, i); - if (tmp == (PyObject *)base) - continue; /* Skip primary base */ - assert(PyType_Check(tmp)); - tmptype = (PyTypeObject *)tmp; - if (may_add_dict && !add_dict && - tmptype->tp_dictoffset != 0) - add_dict++; - if (may_add_weak && !add_weak && - tmptype->tp_weaklistoffset != 0) - add_weak++; - if (may_add_dict && !add_dict) - continue; - if (may_add_weak && !add_weak) - continue; - /* Nothing more to check */ - break; - } - } - } - - /* XXX From here until type is safely allocated, - "return NULL" may leak slots! */ - - /* Allocate the type object */ - type = (PyTypeObject *)metatype->tp_alloc(metatype, nslots); - if (type == NULL) { - Py_XDECREF(slots); - Py_DECREF(bases); - return NULL; - } - - /* Keep name and slots alive in the extended type object */ - et = (PyHeapTypeObject *)type; - Py_INCREF(name); - et->ht_name = name; - et->ht_slots = slots; - - /* Initialize tp_flags */ - type->tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HEAPTYPE | - Py_TPFLAGS_BASETYPE; - if (base->tp_flags & Py_TPFLAGS_HAVE_GC) - type->tp_flags |= Py_TPFLAGS_HAVE_GC; - - /* Initialize essential fields */ - type->tp_as_number = &et->as_number; - type->tp_as_sequence = &et->as_sequence; - type->tp_as_mapping = &et->as_mapping; - type->tp_as_buffer = &et->as_buffer; - type->tp_name = _PyUnicode_AsString(name); - if (!type->tp_name) { - Py_DECREF(type); - return NULL; - } - - /* Set tp_base and tp_bases */ - type->tp_bases = bases; - Py_INCREF(base); - type->tp_base = base; - - /* Initialize tp_dict from passed-in dict */ - type->tp_dict = dict = PyDict_Copy(dict); - if (dict == NULL) { - Py_DECREF(type); - return NULL; - } - - /* Set __module__ in the dict */ - if (PyDict_GetItemString(dict, "__module__") == NULL) { - tmp = PyEval_GetGlobals(); - if (tmp != NULL) { - tmp = PyDict_GetItemString(tmp, "__name__"); - if (tmp != NULL) { - if (PyDict_SetItemString(dict, "__module__", - tmp) < 0) - return NULL; - } - } - } - - /* Set tp_doc to a copy of dict['__doc__'], if the latter is there - and is a string. The __doc__ accessor will first look for tp_doc; - if that fails, it will still look into __dict__. - */ - { - PyObject *doc = PyDict_GetItemString(dict, "__doc__"); - if (doc != NULL && PyUnicode_Check(doc)) { - Py_ssize_t len; - char *doc_str; - char *tp_doc; - - doc_str = _PyUnicode_AsString(doc); - if (doc_str == NULL) { - Py_DECREF(type); - return NULL; - } - /* Silently truncate the docstring if it contains null bytes. */ - len = strlen(doc_str); - tp_doc = (char *)PyObject_MALLOC(len + 1); - if (tp_doc == NULL) { - Py_DECREF(type); - return NULL; - } - memcpy(tp_doc, doc_str, len + 1); - type->tp_doc = tp_doc; - } - } - - /* Special-case __new__: if it's a plain function, - make it a static function */ - tmp = PyDict_GetItemString(dict, "__new__"); - if (tmp != NULL && PyFunction_Check(tmp)) { - tmp = PyStaticMethod_New(tmp); - if (tmp == NULL) { - Py_DECREF(type); - return NULL; - } - PyDict_SetItemString(dict, "__new__", tmp); - Py_DECREF(tmp); - } - - /* Add descriptors for custom slots from __slots__, or for __dict__ */ - mp = PyHeapType_GET_MEMBERS(et); - slotoffset = base->tp_basicsize; - if (slots != NULL) { - for (i = 0; i < nslots; i++, mp++) { - mp->name = _PyUnicode_AsString( - PyTuple_GET_ITEM(slots, i)); - mp->type = T_OBJECT_EX; - mp->offset = slotoffset; - - /* __dict__ and __weakref__ are already filtered out */ - assert(strcmp(mp->name, "__dict__") != 0); - assert(strcmp(mp->name, "__weakref__") != 0); - - slotoffset += sizeof(PyObject *); - } - } - if (add_dict) { - if (base->tp_itemsize) - type->tp_dictoffset = -(long)sizeof(PyObject *); - else - type->tp_dictoffset = slotoffset; - slotoffset += sizeof(PyObject *); - } - if (add_weak) { - assert(!base->tp_itemsize); - type->tp_weaklistoffset = slotoffset; - slotoffset += sizeof(PyObject *); - } - type->tp_basicsize = slotoffset; - type->tp_itemsize = base->tp_itemsize; - type->tp_members = PyHeapType_GET_MEMBERS(et); - - if (type->tp_weaklistoffset && type->tp_dictoffset) - type->tp_getset = subtype_getsets_full; - else if (type->tp_weaklistoffset && !type->tp_dictoffset) - type->tp_getset = subtype_getsets_weakref_only; - else if (!type->tp_weaklistoffset && type->tp_dictoffset) - type->tp_getset = subtype_getsets_dict_only; - else - type->tp_getset = NULL; - - /* Special case some slots */ - if (type->tp_dictoffset != 0 || nslots > 0) { - if (base->tp_getattr == NULL && base->tp_getattro == NULL) - type->tp_getattro = PyObject_GenericGetAttr; - if (base->tp_setattr == NULL && base->tp_setattro == NULL) - type->tp_setattro = PyObject_GenericSetAttr; - } - type->tp_dealloc = subtype_dealloc; - - /* Enable GC unless there are really no instance variables possible */ - if (!(type->tp_basicsize == sizeof(PyObject) && - type->tp_itemsize == 0)) - type->tp_flags |= Py_TPFLAGS_HAVE_GC; - - /* Always override allocation strategy to use regular heap */ - type->tp_alloc = PyType_GenericAlloc; - if (type->tp_flags & Py_TPFLAGS_HAVE_GC) { - type->tp_free = PyObject_GC_Del; - type->tp_traverse = subtype_traverse; - type->tp_clear = subtype_clear; - } - else - type->tp_free = PyObject_Del; - - /* Initialize the rest */ - if (PyType_Ready(type) < 0) { - Py_DECREF(type); - return NULL; - } - - /* Put the proper slots in place */ - fixup_slot_dispatchers(type); - - return (PyObject *)type; + PyObject *name, *bases, *dict; + static char *kwlist[] = {"name", "bases", "dict", 0}; + PyObject *slots, *tmp, *newslots; + PyTypeObject *type, *base, *tmptype, *winner; + PyHeapTypeObject *et; + PyMemberDef *mp; + Py_ssize_t i, nbases, nslots, slotoffset, add_dict, add_weak; + int j, may_add_dict, may_add_weak; + + assert(args != NULL && PyTuple_Check(args)); + assert(kwds == NULL || PyDict_Check(kwds)); + + /* Special case: type(x) should return x->ob_type */ + { + const Py_ssize_t nargs = PyTuple_GET_SIZE(args); + const Py_ssize_t nkwds = kwds == NULL ? 0 : PyDict_Size(kwds); + + if (PyType_CheckExact(metatype) && nargs == 1 && nkwds == 0) { + PyObject *x = PyTuple_GET_ITEM(args, 0); + Py_INCREF(Py_TYPE(x)); + return (PyObject *) Py_TYPE(x); + } + + /* SF bug 475327 -- if that didn't trigger, we need 3 + arguments. but PyArg_ParseTupleAndKeywords below may give + a msg saying type() needs exactly 3. */ + if (nargs + nkwds != 3) { + PyErr_SetString(PyExc_TypeError, + "type() takes 1 or 3 arguments"); + return NULL; + } + } + + /* Check arguments: (name, bases, dict) */ + if (!PyArg_ParseTupleAndKeywords(args, kwds, "UO!O!:type", kwlist, + &name, + &PyTuple_Type, &bases, + &PyDict_Type, &dict)) + return NULL; + + /* Determine the proper metatype to deal with this, + and check for metatype conflicts while we're at it. + Note that if some other metatype wins to contract, + it's possible that its instances are not types. */ + nbases = PyTuple_GET_SIZE(bases); + winner = metatype; + for (i = 0; i < nbases; i++) { + tmp = PyTuple_GET_ITEM(bases, i); + tmptype = Py_TYPE(tmp); + if (PyType_IsSubtype(winner, tmptype)) + continue; + if (PyType_IsSubtype(tmptype, winner)) { + winner = tmptype; + continue; + } + PyErr_SetString(PyExc_TypeError, + "metaclass conflict: " + "the metaclass of a derived class " + "must be a (non-strict) subclass " + "of the metaclasses of all its bases"); + return NULL; + } + if (winner != metatype) { + if (winner->tp_new != type_new) /* Pass it to the winner */ + return winner->tp_new(winner, args, kwds); + metatype = winner; + } + + /* Adjust for empty tuple bases */ + if (nbases == 0) { + bases = PyTuple_Pack(1, &PyBaseObject_Type); + if (bases == NULL) + return NULL; + nbases = 1; + } + else + Py_INCREF(bases); + + /* XXX From here until type is allocated, "return NULL" leaks bases! */ + + /* Calculate best base, and check that all bases are type objects */ + base = best_base(bases); + if (base == NULL) { + Py_DECREF(bases); + return NULL; + } + if (!PyType_HasFeature(base, Py_TPFLAGS_BASETYPE)) { + PyErr_Format(PyExc_TypeError, + "type '%.100s' is not an acceptable base type", + base->tp_name); + Py_DECREF(bases); + return NULL; + } + + /* Check for a __slots__ sequence variable in dict, and count it */ + slots = PyDict_GetItemString(dict, "__slots__"); + nslots = 0; + add_dict = 0; + add_weak = 0; + may_add_dict = base->tp_dictoffset == 0; + may_add_weak = base->tp_weaklistoffset == 0 && base->tp_itemsize == 0; + if (slots == NULL) { + if (may_add_dict) { + add_dict++; + } + if (may_add_weak) { + add_weak++; + } + } + else { + /* Have slots */ + + /* Make it into a tuple */ + if (PyUnicode_Check(slots)) + slots = PyTuple_Pack(1, slots); + else + slots = PySequence_Tuple(slots); + if (slots == NULL) { + Py_DECREF(bases); + return NULL; + } + assert(PyTuple_Check(slots)); + + /* Are slots allowed? */ + nslots = PyTuple_GET_SIZE(slots); + if (nslots > 0 && base->tp_itemsize != 0) { + PyErr_Format(PyExc_TypeError, + "nonempty __slots__ " + "not supported for subtype of '%s'", + base->tp_name); + bad_slots: + Py_DECREF(bases); + Py_DECREF(slots); + return NULL; + } + + /* Check for valid slot names and two special cases */ + for (i = 0; i < nslots; i++) { + PyObject *tmp = PyTuple_GET_ITEM(slots, i); + if (!valid_identifier(tmp)) + goto bad_slots; + assert(PyUnicode_Check(tmp)); + if (PyUnicode_CompareWithASCIIString(tmp, "__dict__") == 0) { + if (!may_add_dict || add_dict) { + PyErr_SetString(PyExc_TypeError, + "__dict__ slot disallowed: " + "we already got one"); + goto bad_slots; + } + add_dict++; + } + if (PyUnicode_CompareWithASCIIString(tmp, "__weakref__") == 0) { + if (!may_add_weak || add_weak) { + PyErr_SetString(PyExc_TypeError, + "__weakref__ slot disallowed: " + "either we already got one, " + "or __itemsize__ != 0"); + goto bad_slots; + } + add_weak++; + } + } + + /* Copy slots into a list, mangle names and sort them. + Sorted names are needed for __class__ assignment. + Convert them back to tuple at the end. + */ + newslots = PyList_New(nslots - add_dict - add_weak); + if (newslots == NULL) + goto bad_slots; + for (i = j = 0; i < nslots; i++) { + tmp = PyTuple_GET_ITEM(slots, i); + if ((add_dict && + PyUnicode_CompareWithASCIIString(tmp, "__dict__") == 0) || + (add_weak && + PyUnicode_CompareWithASCIIString(tmp, "__weakref__") == 0)) + continue; + tmp =_Py_Mangle(name, tmp); + if (!tmp) + goto bad_slots; + PyList_SET_ITEM(newslots, j, tmp); + j++; + } + assert(j == nslots - add_dict - add_weak); + nslots = j; + Py_DECREF(slots); + if (PyList_Sort(newslots) == -1) { + Py_DECREF(bases); + Py_DECREF(newslots); + return NULL; + } + slots = PyList_AsTuple(newslots); + Py_DECREF(newslots); + if (slots == NULL) { + Py_DECREF(bases); + return NULL; + } + + /* Secondary bases may provide weakrefs or dict */ + if (nbases > 1 && + ((may_add_dict && !add_dict) || + (may_add_weak && !add_weak))) { + for (i = 0; i < nbases; i++) { + tmp = PyTuple_GET_ITEM(bases, i); + if (tmp == (PyObject *)base) + continue; /* Skip primary base */ + assert(PyType_Check(tmp)); + tmptype = (PyTypeObject *)tmp; + if (may_add_dict && !add_dict && + tmptype->tp_dictoffset != 0) + add_dict++; + if (may_add_weak && !add_weak && + tmptype->tp_weaklistoffset != 0) + add_weak++; + if (may_add_dict && !add_dict) + continue; + if (may_add_weak && !add_weak) + continue; + /* Nothing more to check */ + break; + } + } + } + + /* XXX From here until type is safely allocated, + "return NULL" may leak slots! */ + + /* Allocate the type object */ + type = (PyTypeObject *)metatype->tp_alloc(metatype, nslots); + if (type == NULL) { + Py_XDECREF(slots); + Py_DECREF(bases); + return NULL; + } + + /* Keep name and slots alive in the extended type object */ + et = (PyHeapTypeObject *)type; + Py_INCREF(name); + et->ht_name = name; + et->ht_slots = slots; + + /* Initialize tp_flags */ + type->tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HEAPTYPE | + Py_TPFLAGS_BASETYPE; + if (base->tp_flags & Py_TPFLAGS_HAVE_GC) + type->tp_flags |= Py_TPFLAGS_HAVE_GC; + + /* Initialize essential fields */ + type->tp_as_number = &et->as_number; + type->tp_as_sequence = &et->as_sequence; + type->tp_as_mapping = &et->as_mapping; + type->tp_as_buffer = &et->as_buffer; + type->tp_name = _PyUnicode_AsString(name); + if (!type->tp_name) { + Py_DECREF(type); + return NULL; + } + + /* Set tp_base and tp_bases */ + type->tp_bases = bases; + Py_INCREF(base); + type->tp_base = base; + + /* Initialize tp_dict from passed-in dict */ + type->tp_dict = dict = PyDict_Copy(dict); + if (dict == NULL) { + Py_DECREF(type); + return NULL; + } + + /* Set __module__ in the dict */ + if (PyDict_GetItemString(dict, "__module__") == NULL) { + tmp = PyEval_GetGlobals(); + if (tmp != NULL) { + tmp = PyDict_GetItemString(tmp, "__name__"); + if (tmp != NULL) { + if (PyDict_SetItemString(dict, "__module__", + tmp) < 0) + return NULL; + } + } + } + + /* Set tp_doc to a copy of dict['__doc__'], if the latter is there + and is a string. The __doc__ accessor will first look for tp_doc; + if that fails, it will still look into __dict__. + */ + { + PyObject *doc = PyDict_GetItemString(dict, "__doc__"); + if (doc != NULL && PyUnicode_Check(doc)) { + Py_ssize_t len; + char *doc_str; + char *tp_doc; + + doc_str = _PyUnicode_AsString(doc); + if (doc_str == NULL) { + Py_DECREF(type); + return NULL; + } + /* Silently truncate the docstring if it contains null bytes. */ + len = strlen(doc_str); + tp_doc = (char *)PyObject_MALLOC(len + 1); + if (tp_doc == NULL) { + Py_DECREF(type); + return NULL; + } + memcpy(tp_doc, doc_str, len + 1); + type->tp_doc = tp_doc; + } + } + + /* Special-case __new__: if it's a plain function, + make it a static function */ + tmp = PyDict_GetItemString(dict, "__new__"); + if (tmp != NULL && PyFunction_Check(tmp)) { + tmp = PyStaticMethod_New(tmp); + if (tmp == NULL) { + Py_DECREF(type); + return NULL; + } + PyDict_SetItemString(dict, "__new__", tmp); + Py_DECREF(tmp); + } + + /* Add descriptors for custom slots from __slots__, or for __dict__ */ + mp = PyHeapType_GET_MEMBERS(et); + slotoffset = base->tp_basicsize; + if (slots != NULL) { + for (i = 0; i < nslots; i++, mp++) { + mp->name = _PyUnicode_AsString( + PyTuple_GET_ITEM(slots, i)); + mp->type = T_OBJECT_EX; + mp->offset = slotoffset; + + /* __dict__ and __weakref__ are already filtered out */ + assert(strcmp(mp->name, "__dict__") != 0); + assert(strcmp(mp->name, "__weakref__") != 0); + + slotoffset += sizeof(PyObject *); + } + } + if (add_dict) { + if (base->tp_itemsize) + type->tp_dictoffset = -(long)sizeof(PyObject *); + else + type->tp_dictoffset = slotoffset; + slotoffset += sizeof(PyObject *); + } + if (add_weak) { + assert(!base->tp_itemsize); + type->tp_weaklistoffset = slotoffset; + slotoffset += sizeof(PyObject *); + } + type->tp_basicsize = slotoffset; + type->tp_itemsize = base->tp_itemsize; + type->tp_members = PyHeapType_GET_MEMBERS(et); + + if (type->tp_weaklistoffset && type->tp_dictoffset) + type->tp_getset = subtype_getsets_full; + else if (type->tp_weaklistoffset && !type->tp_dictoffset) + type->tp_getset = subtype_getsets_weakref_only; + else if (!type->tp_weaklistoffset && type->tp_dictoffset) + type->tp_getset = subtype_getsets_dict_only; + else + type->tp_getset = NULL; + + /* Special case some slots */ + if (type->tp_dictoffset != 0 || nslots > 0) { + if (base->tp_getattr == NULL && base->tp_getattro == NULL) + type->tp_getattro = PyObject_GenericGetAttr; + if (base->tp_setattr == NULL && base->tp_setattro == NULL) + type->tp_setattro = PyObject_GenericSetAttr; + } + type->tp_dealloc = subtype_dealloc; + + /* Enable GC unless there are really no instance variables possible */ + if (!(type->tp_basicsize == sizeof(PyObject) && + type->tp_itemsize == 0)) + type->tp_flags |= Py_TPFLAGS_HAVE_GC; + + /* Always override allocation strategy to use regular heap */ + type->tp_alloc = PyType_GenericAlloc; + if (type->tp_flags & Py_TPFLAGS_HAVE_GC) { + type->tp_free = PyObject_GC_Del; + type->tp_traverse = subtype_traverse; + type->tp_clear = subtype_clear; + } + else + type->tp_free = PyObject_Del; + + /* Initialize the rest */ + if (PyType_Ready(type) < 0) { + Py_DECREF(type); + return NULL; + } + + /* Put the proper slots in place */ + fixup_slot_dispatchers(type); + + return (PyObject *)type; } /* Internal API to look for a name through the MRO. @@ -2296,50 +2296,50 @@ type_new(PyTypeObject *metatype, PyObject *args, PyObject *kwds) PyObject * _PyType_Lookup(PyTypeObject *type, PyObject *name) { - Py_ssize_t i, n; - PyObject *mro, *res, *base, *dict; - unsigned int h; - - if (MCACHE_CACHEABLE_NAME(name) && - PyType_HasFeature(type, Py_TPFLAGS_VALID_VERSION_TAG)) { - /* fast path */ - h = MCACHE_HASH_METHOD(type, name); - if (method_cache[h].version == type->tp_version_tag && - method_cache[h].name == name) - return method_cache[h].value; - } - - /* Look in tp_dict of types in MRO */ - mro = type->tp_mro; - - /* If mro is NULL, the type is either not yet initialized - by PyType_Ready(), or already cleared by type_clear(). - Either way the safest thing to do is to return NULL. */ - if (mro == NULL) - return NULL; - - res = NULL; - assert(PyTuple_Check(mro)); - n = PyTuple_GET_SIZE(mro); - for (i = 0; i < n; i++) { - base = PyTuple_GET_ITEM(mro, i); - assert(PyType_Check(base)); - dict = ((PyTypeObject *)base)->tp_dict; - assert(dict && PyDict_Check(dict)); - res = PyDict_GetItem(dict, name); - if (res != NULL) - break; - } - - if (MCACHE_CACHEABLE_NAME(name) && assign_version_tag(type)) { - h = MCACHE_HASH_METHOD(type, name); - method_cache[h].version = type->tp_version_tag; - method_cache[h].value = res; /* borrowed */ - Py_INCREF(name); - Py_DECREF(method_cache[h].name); - method_cache[h].name = name; - } - return res; + Py_ssize_t i, n; + PyObject *mro, *res, *base, *dict; + unsigned int h; + + if (MCACHE_CACHEABLE_NAME(name) && + PyType_HasFeature(type, Py_TPFLAGS_VALID_VERSION_TAG)) { + /* fast path */ + h = MCACHE_HASH_METHOD(type, name); + if (method_cache[h].version == type->tp_version_tag && + method_cache[h].name == name) + return method_cache[h].value; + } + + /* Look in tp_dict of types in MRO */ + mro = type->tp_mro; + + /* If mro is NULL, the type is either not yet initialized + by PyType_Ready(), or already cleared by type_clear(). + Either way the safest thing to do is to return NULL. */ + if (mro == NULL) + return NULL; + + res = NULL; + assert(PyTuple_Check(mro)); + n = PyTuple_GET_SIZE(mro); + for (i = 0; i < n; i++) { + base = PyTuple_GET_ITEM(mro, i); + assert(PyType_Check(base)); + dict = ((PyTypeObject *)base)->tp_dict; + assert(dict && PyDict_Check(dict)); + res = PyDict_GetItem(dict, name); + if (res != NULL) + break; + } + + if (MCACHE_CACHEABLE_NAME(name) && assign_version_tag(type)) { + h = MCACHE_HASH_METHOD(type, name); + method_cache[h].version = type->tp_version_tag; + method_cache[h].value = res; /* borrowed */ + Py_INCREF(name); + Py_DECREF(method_cache[h].name); + method_cache[h].name = name; + } + return res; } /* This is similar to PyObject_GenericGetAttr(), @@ -2347,166 +2347,166 @@ _PyType_Lookup(PyTypeObject *type, PyObject *name) static PyObject * type_getattro(PyTypeObject *type, PyObject *name) { - PyTypeObject *metatype = Py_TYPE(type); - PyObject *meta_attribute, *attribute; - descrgetfunc meta_get; - - /* Initialize this type (we'll assume the metatype is initialized) */ - if (type->tp_dict == NULL) { - if (PyType_Ready(type) < 0) - return NULL; - } - - /* No readable descriptor found yet */ - meta_get = NULL; - - /* Look for the attribute in the metatype */ - meta_attribute = _PyType_Lookup(metatype, name); - - if (meta_attribute != NULL) { - meta_get = Py_TYPE(meta_attribute)->tp_descr_get; - - if (meta_get != NULL && PyDescr_IsData(meta_attribute)) { - /* Data descriptors implement tp_descr_set to intercept - * writes. Assume the attribute is not overridden in - * type's tp_dict (and bases): call the descriptor now. - */ - return meta_get(meta_attribute, (PyObject *)type, - (PyObject *)metatype); - } - Py_INCREF(meta_attribute); - } - - /* No data descriptor found on metatype. Look in tp_dict of this - * type and its bases */ - attribute = _PyType_Lookup(type, name); - if (attribute != NULL) { - /* Implement descriptor functionality, if any */ - descrgetfunc local_get = Py_TYPE(attribute)->tp_descr_get; - - Py_XDECREF(meta_attribute); - - if (local_get != NULL) { - /* NULL 2nd argument indicates the descriptor was - * found on the target object itself (or a base) */ - return local_get(attribute, (PyObject *)NULL, - (PyObject *)type); - } - - Py_INCREF(attribute); - return attribute; - } - - /* No attribute found in local __dict__ (or bases): use the - * descriptor from the metatype, if any */ - if (meta_get != NULL) { - PyObject *res; - res = meta_get(meta_attribute, (PyObject *)type, - (PyObject *)metatype); - Py_DECREF(meta_attribute); - return res; - } - - /* If an ordinary attribute was found on the metatype, return it now */ - if (meta_attribute != NULL) { - return meta_attribute; - } - - /* Give up */ - PyErr_Format(PyExc_AttributeError, - "type object '%.50s' has no attribute '%U'", - type->tp_name, name); - return NULL; + PyTypeObject *metatype = Py_TYPE(type); + PyObject *meta_attribute, *attribute; + descrgetfunc meta_get; + + /* Initialize this type (we'll assume the metatype is initialized) */ + if (type->tp_dict == NULL) { + if (PyType_Ready(type) < 0) + return NULL; + } + + /* No readable descriptor found yet */ + meta_get = NULL; + + /* Look for the attribute in the metatype */ + meta_attribute = _PyType_Lookup(metatype, name); + + if (meta_attribute != NULL) { + meta_get = Py_TYPE(meta_attribute)->tp_descr_get; + + if (meta_get != NULL && PyDescr_IsData(meta_attribute)) { + /* Data descriptors implement tp_descr_set to intercept + * writes. Assume the attribute is not overridden in + * type's tp_dict (and bases): call the descriptor now. + */ + return meta_get(meta_attribute, (PyObject *)type, + (PyObject *)metatype); + } + Py_INCREF(meta_attribute); + } + + /* No data descriptor found on metatype. Look in tp_dict of this + * type and its bases */ + attribute = _PyType_Lookup(type, name); + if (attribute != NULL) { + /* Implement descriptor functionality, if any */ + descrgetfunc local_get = Py_TYPE(attribute)->tp_descr_get; + + Py_XDECREF(meta_attribute); + + if (local_get != NULL) { + /* NULL 2nd argument indicates the descriptor was + * found on the target object itself (or a base) */ + return local_get(attribute, (PyObject *)NULL, + (PyObject *)type); + } + + Py_INCREF(attribute); + return attribute; + } + + /* No attribute found in local __dict__ (or bases): use the + * descriptor from the metatype, if any */ + if (meta_get != NULL) { + PyObject *res; + res = meta_get(meta_attribute, (PyObject *)type, + (PyObject *)metatype); + Py_DECREF(meta_attribute); + return res; + } + + /* If an ordinary attribute was found on the metatype, return it now */ + if (meta_attribute != NULL) { + return meta_attribute; + } + + /* Give up */ + PyErr_Format(PyExc_AttributeError, + "type object '%.50s' has no attribute '%U'", + type->tp_name, name); + return NULL; } static int type_setattro(PyTypeObject *type, PyObject *name, PyObject *value) { - if (!(type->tp_flags & Py_TPFLAGS_HEAPTYPE)) { - PyErr_Format( - PyExc_TypeError, - "can't set attributes of built-in/extension type '%s'", - type->tp_name); - return -1; - } - if (PyObject_GenericSetAttr((PyObject *)type, name, value) < 0) - return -1; - return update_slot(type, name); + if (!(type->tp_flags & Py_TPFLAGS_HEAPTYPE)) { + PyErr_Format( + PyExc_TypeError, + "can't set attributes of built-in/extension type '%s'", + type->tp_name); + return -1; + } + if (PyObject_GenericSetAttr((PyObject *)type, name, value) < 0) + return -1; + return update_slot(type, name); } static void type_dealloc(PyTypeObject *type) { - PyHeapTypeObject *et; - - /* Assert this is a heap-allocated type object */ - assert(type->tp_flags & Py_TPFLAGS_HEAPTYPE); - _PyObject_GC_UNTRACK(type); - PyObject_ClearWeakRefs((PyObject *)type); - et = (PyHeapTypeObject *)type; - Py_XDECREF(type->tp_base); - Py_XDECREF(type->tp_dict); - Py_XDECREF(type->tp_bases); - Py_XDECREF(type->tp_mro); - Py_XDECREF(type->tp_cache); - Py_XDECREF(type->tp_subclasses); - /* A type's tp_doc is heap allocated, unlike the tp_doc slots - * of most other objects. It's okay to cast it to char *. - */ - PyObject_Free((char *)type->tp_doc); - Py_XDECREF(et->ht_name); - Py_XDECREF(et->ht_slots); - Py_TYPE(type)->tp_free((PyObject *)type); + PyHeapTypeObject *et; + + /* Assert this is a heap-allocated type object */ + assert(type->tp_flags & Py_TPFLAGS_HEAPTYPE); + _PyObject_GC_UNTRACK(type); + PyObject_ClearWeakRefs((PyObject *)type); + et = (PyHeapTypeObject *)type; + Py_XDECREF(type->tp_base); + Py_XDECREF(type->tp_dict); + Py_XDECREF(type->tp_bases); + Py_XDECREF(type->tp_mro); + Py_XDECREF(type->tp_cache); + Py_XDECREF(type->tp_subclasses); + /* A type's tp_doc is heap allocated, unlike the tp_doc slots + * of most other objects. It's okay to cast it to char *. + */ + PyObject_Free((char *)type->tp_doc); + Py_XDECREF(et->ht_name); + Py_XDECREF(et->ht_slots); + Py_TYPE(type)->tp_free((PyObject *)type); } static PyObject * type_subclasses(PyTypeObject *type, PyObject *args_ignored) { - PyObject *list, *raw, *ref; - Py_ssize_t i, n; - - list = PyList_New(0); - if (list == NULL) - return NULL; - raw = type->tp_subclasses; - if (raw == NULL) - return list; - assert(PyList_Check(raw)); - n = PyList_GET_SIZE(raw); - for (i = 0; i < n; i++) { - ref = PyList_GET_ITEM(raw, i); - assert(PyWeakref_CheckRef(ref)); - ref = PyWeakref_GET_OBJECT(ref); - if (ref != Py_None) { - if (PyList_Append(list, ref) < 0) { - Py_DECREF(list); - return NULL; - } - } - } - return list; + PyObject *list, *raw, *ref; + Py_ssize_t i, n; + + list = PyList_New(0); + if (list == NULL) + return NULL; + raw = type->tp_subclasses; + if (raw == NULL) + return list; + assert(PyList_Check(raw)); + n = PyList_GET_SIZE(raw); + for (i = 0; i < n; i++) { + ref = PyList_GET_ITEM(raw, i); + assert(PyWeakref_CheckRef(ref)); + ref = PyWeakref_GET_OBJECT(ref); + if (ref != Py_None) { + if (PyList_Append(list, ref) < 0) { + Py_DECREF(list); + return NULL; + } + } + } + return list; } static PyObject * type_prepare(PyObject *self, PyObject *args, PyObject *kwds) { - return PyDict_New(); + return PyDict_New(); } static PyMethodDef type_methods[] = { - {"mro", (PyCFunction)mro_external, METH_NOARGS, - PyDoc_STR("mro() -> list\nreturn a type's method resolution order")}, - {"__subclasses__", (PyCFunction)type_subclasses, METH_NOARGS, - PyDoc_STR("__subclasses__() -> list of immediate subclasses")}, - {"__prepare__", (PyCFunction)type_prepare, - METH_VARARGS | METH_KEYWORDS | METH_CLASS, - PyDoc_STR("__prepare__() -> dict\n" - "used to create the namespace for the class statement")}, - {"__instancecheck__", type___instancecheck__, METH_O, - PyDoc_STR("__instancecheck__() -> check if an object is an instance")}, - {"__subclasscheck__", type___subclasscheck__, METH_O, - PyDoc_STR("__subclasschck__ -> check if an class is a subclass")}, - {0} + {"mro", (PyCFunction)mro_external, METH_NOARGS, + PyDoc_STR("mro() -> list\nreturn a type's method resolution order")}, + {"__subclasses__", (PyCFunction)type_subclasses, METH_NOARGS, + PyDoc_STR("__subclasses__() -> list of immediate subclasses")}, + {"__prepare__", (PyCFunction)type_prepare, + METH_VARARGS | METH_KEYWORDS | METH_CLASS, + PyDoc_STR("__prepare__() -> dict\n" + "used to create the namespace for the class statement")}, + {"__instancecheck__", type___instancecheck__, METH_O, + PyDoc_STR("__instancecheck__() -> check if an object is an instance")}, + {"__subclasscheck__", type___subclasscheck__, METH_O, + PyDoc_STR("__subclasschck__ -> check if an class is a subclass")}, + {0} }; PyDoc_STRVAR(type_doc, @@ -2516,109 +2516,109 @@ PyDoc_STRVAR(type_doc, static int type_traverse(PyTypeObject *type, visitproc visit, void *arg) { - /* Because of type_is_gc(), the collector only calls this - for heaptypes. */ - assert(type->tp_flags & Py_TPFLAGS_HEAPTYPE); + /* Because of type_is_gc(), the collector only calls this + for heaptypes. */ + assert(type->tp_flags & Py_TPFLAGS_HEAPTYPE); - Py_VISIT(type->tp_dict); - Py_VISIT(type->tp_cache); - Py_VISIT(type->tp_mro); - Py_VISIT(type->tp_bases); - Py_VISIT(type->tp_base); + Py_VISIT(type->tp_dict); + Py_VISIT(type->tp_cache); + Py_VISIT(type->tp_mro); + Py_VISIT(type->tp_bases); + Py_VISIT(type->tp_base); - /* There's no need to visit type->tp_subclasses or - ((PyHeapTypeObject *)type)->ht_slots, because they can't be involved - in cycles; tp_subclasses is a list of weak references, - and slots is a tuple of strings. */ + /* There's no need to visit type->tp_subclasses or + ((PyHeapTypeObject *)type)->ht_slots, because they can't be involved + in cycles; tp_subclasses is a list of weak references, + and slots is a tuple of strings. */ - return 0; + return 0; } static int type_clear(PyTypeObject *type) { - /* Because of type_is_gc(), the collector only calls this - for heaptypes. */ - assert(type->tp_flags & Py_TPFLAGS_HEAPTYPE); + /* Because of type_is_gc(), the collector only calls this + for heaptypes. */ + assert(type->tp_flags & Py_TPFLAGS_HEAPTYPE); - /* The only field we need to clear is tp_mro, which is part of a - hard cycle (its first element is the class itself) that won't - be broken otherwise (it's a tuple and tuples don't have a - tp_clear handler). None of the other fields need to be - cleared, and here's why: + /* The only field we need to clear is tp_mro, which is part of a + hard cycle (its first element is the class itself) that won't + be broken otherwise (it's a tuple and tuples don't have a + tp_clear handler). None of the other fields need to be + cleared, and here's why: - tp_dict: - It is a dict, so the collector will call its tp_clear. + tp_dict: + It is a dict, so the collector will call its tp_clear. - tp_cache: - Not used; if it were, it would be a dict. + tp_cache: + Not used; if it were, it would be a dict. - tp_bases, tp_base: - If these are involved in a cycle, there must be at least - one other, mutable object in the cycle, e.g. a base - class's dict; the cycle will be broken that way. + tp_bases, tp_base: + If these are involved in a cycle, there must be at least + one other, mutable object in the cycle, e.g. a base + class's dict; the cycle will be broken that way. - tp_subclasses: - A list of weak references can't be part of a cycle; and - lists have their own tp_clear. + tp_subclasses: + A list of weak references can't be part of a cycle; and + lists have their own tp_clear. - slots (in PyHeapTypeObject): - A tuple of strings can't be part of a cycle. - */ + slots (in PyHeapTypeObject): + A tuple of strings can't be part of a cycle. + */ - Py_CLEAR(type->tp_mro); + Py_CLEAR(type->tp_mro); - return 0; + return 0; } static int type_is_gc(PyTypeObject *type) { - return type->tp_flags & Py_TPFLAGS_HEAPTYPE; + return type->tp_flags & Py_TPFLAGS_HEAPTYPE; } PyTypeObject PyType_Type = { - PyVarObject_HEAD_INIT(&PyType_Type, 0) - "type", /* tp_name */ - sizeof(PyHeapTypeObject), /* tp_basicsize */ - sizeof(PyMemberDef), /* tp_itemsize */ - (destructor)type_dealloc, /* tp_dealloc */ - 0, /* tp_print */ - 0, /* tp_getattr */ - 0, /* tp_setattr */ - 0, /* tp_reserved */ - (reprfunc)type_repr, /* tp_repr */ - 0, /* tp_as_number */ - 0, /* tp_as_sequence */ - 0, /* tp_as_mapping */ - 0, /* tp_hash */ - (ternaryfunc)type_call, /* tp_call */ - 0, /* tp_str */ - (getattrofunc)type_getattro, /* tp_getattro */ - (setattrofunc)type_setattro, /* tp_setattro */ - 0, /* tp_as_buffer */ - Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | - Py_TPFLAGS_BASETYPE | Py_TPFLAGS_TYPE_SUBCLASS, /* tp_flags */ - type_doc, /* tp_doc */ - (traverseproc)type_traverse, /* tp_traverse */ - (inquiry)type_clear, /* tp_clear */ - 0, /* tp_richcompare */ - offsetof(PyTypeObject, tp_weaklist), /* tp_weaklistoffset */ - 0, /* tp_iter */ - 0, /* tp_iternext */ - type_methods, /* tp_methods */ - type_members, /* tp_members */ - type_getsets, /* tp_getset */ - 0, /* tp_base */ - 0, /* tp_dict */ - 0, /* tp_descr_get */ - 0, /* tp_descr_set */ - offsetof(PyTypeObject, tp_dict), /* tp_dictoffset */ - type_init, /* tp_init */ - 0, /* tp_alloc */ - type_new, /* tp_new */ - PyObject_GC_Del, /* tp_free */ - (inquiry)type_is_gc, /* tp_is_gc */ + PyVarObject_HEAD_INIT(&PyType_Type, 0) + "type", /* tp_name */ + sizeof(PyHeapTypeObject), /* tp_basicsize */ + sizeof(PyMemberDef), /* tp_itemsize */ + (destructor)type_dealloc, /* tp_dealloc */ + 0, /* tp_print */ + 0, /* tp_getattr */ + 0, /* tp_setattr */ + 0, /* tp_reserved */ + (reprfunc)type_repr, /* tp_repr */ + 0, /* tp_as_number */ + 0, /* tp_as_sequence */ + 0, /* tp_as_mapping */ + 0, /* tp_hash */ + (ternaryfunc)type_call, /* tp_call */ + 0, /* tp_str */ + (getattrofunc)type_getattro, /* tp_getattro */ + (setattrofunc)type_setattro, /* tp_setattro */ + 0, /* tp_as_buffer */ + Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | + Py_TPFLAGS_BASETYPE | Py_TPFLAGS_TYPE_SUBCLASS, /* tp_flags */ + type_doc, /* tp_doc */ + (traverseproc)type_traverse, /* tp_traverse */ + (inquiry)type_clear, /* tp_clear */ + 0, /* tp_richcompare */ + offsetof(PyTypeObject, tp_weaklist), /* tp_weaklistoffset */ + 0, /* tp_iter */ + 0, /* tp_iternext */ + type_methods, /* tp_methods */ + type_members, /* tp_members */ + type_getsets, /* tp_getset */ + 0, /* tp_base */ + 0, /* tp_dict */ + 0, /* tp_descr_get */ + 0, /* tp_descr_set */ + offsetof(PyTypeObject, tp_dict), /* tp_dictoffset */ + type_init, /* tp_init */ + 0, /* tp_alloc */ + type_new, /* tp_new */ + PyObject_GC_Del, /* tp_free */ + (inquiry)type_is_gc, /* tp_is_gc */ }; @@ -2671,318 +2671,318 @@ object_new(PyTypeObject *type, PyObject *args, PyObject *kwds); static int excess_args(PyObject *args, PyObject *kwds) { - return PyTuple_GET_SIZE(args) || - (kwds && PyDict_Check(kwds) && PyDict_Size(kwds)); + return PyTuple_GET_SIZE(args) || + (kwds && PyDict_Check(kwds) && PyDict_Size(kwds)); } static int object_init(PyObject *self, PyObject *args, PyObject *kwds) { - int err = 0; - if (excess_args(args, kwds)) { - PyTypeObject *type = Py_TYPE(self); - if (type->tp_init != object_init && - type->tp_new != object_new) - { - err = PyErr_WarnEx(PyExc_DeprecationWarning, - "object.__init__() takes no parameters", - 1); - } - else if (type->tp_init != object_init || - type->tp_new == object_new) - { - PyErr_SetString(PyExc_TypeError, - "object.__init__() takes no parameters"); - err = -1; - } - } - return err; + int err = 0; + if (excess_args(args, kwds)) { + PyTypeObject *type = Py_TYPE(self); + if (type->tp_init != object_init && + type->tp_new != object_new) + { + err = PyErr_WarnEx(PyExc_DeprecationWarning, + "object.__init__() takes no parameters", + 1); + } + else if (type->tp_init != object_init || + type->tp_new == object_new) + { + PyErr_SetString(PyExc_TypeError, + "object.__init__() takes no parameters"); + err = -1; + } + } + return err; } static PyObject * object_new(PyTypeObject *type, PyObject *args, PyObject *kwds) { - int err = 0; - if (excess_args(args, kwds)) { - if (type->tp_new != object_new && - type->tp_init != object_init) - { - err = PyErr_WarnEx(PyExc_DeprecationWarning, - "object.__new__() takes no parameters", - 1); - } - else if (type->tp_new != object_new || - type->tp_init == object_init) - { - PyErr_SetString(PyExc_TypeError, - "object.__new__() takes no parameters"); - err = -1; - } - } - if (err < 0) - return NULL; - - if (type->tp_flags & Py_TPFLAGS_IS_ABSTRACT) { - static PyObject *comma = NULL; - PyObject *abstract_methods = NULL; - PyObject *builtins; - PyObject *sorted; - PyObject *sorted_methods = NULL; - PyObject *joined = NULL; - - /* Compute ", ".join(sorted(type.__abstractmethods__)) - into joined. */ - abstract_methods = type_abstractmethods(type, NULL); - if (abstract_methods == NULL) - goto error; - builtins = PyEval_GetBuiltins(); - if (builtins == NULL) - goto error; - sorted = PyDict_GetItemString(builtins, "sorted"); - if (sorted == NULL) - goto error; - sorted_methods = PyObject_CallFunctionObjArgs(sorted, - abstract_methods, - NULL); - if (sorted_methods == NULL) - goto error; - if (comma == NULL) { - comma = PyUnicode_InternFromString(", "); - if (comma == NULL) - goto error; - } - joined = PyObject_CallMethod(comma, "join", - "O", sorted_methods); - if (joined == NULL) - goto error; - - PyErr_Format(PyExc_TypeError, - "Can't instantiate abstract class %s " - "with abstract methods %U", - type->tp_name, - joined); - error: - Py_XDECREF(joined); - Py_XDECREF(sorted_methods); - Py_XDECREF(abstract_methods); - return NULL; - } - return type->tp_alloc(type, 0); + int err = 0; + if (excess_args(args, kwds)) { + if (type->tp_new != object_new && + type->tp_init != object_init) + { + err = PyErr_WarnEx(PyExc_DeprecationWarning, + "object.__new__() takes no parameters", + 1); + } + else if (type->tp_new != object_new || + type->tp_init == object_init) + { + PyErr_SetString(PyExc_TypeError, + "object.__new__() takes no parameters"); + err = -1; + } + } + if (err < 0) + return NULL; + + if (type->tp_flags & Py_TPFLAGS_IS_ABSTRACT) { + static PyObject *comma = NULL; + PyObject *abstract_methods = NULL; + PyObject *builtins; + PyObject *sorted; + PyObject *sorted_methods = NULL; + PyObject *joined = NULL; + + /* Compute ", ".join(sorted(type.__abstractmethods__)) + into joined. */ + abstract_methods = type_abstractmethods(type, NULL); + if (abstract_methods == NULL) + goto error; + builtins = PyEval_GetBuiltins(); + if (builtins == NULL) + goto error; + sorted = PyDict_GetItemString(builtins, "sorted"); + if (sorted == NULL) + goto error; + sorted_methods = PyObject_CallFunctionObjArgs(sorted, + abstract_methods, + NULL); + if (sorted_methods == NULL) + goto error; + if (comma == NULL) { + comma = PyUnicode_InternFromString(", "); + if (comma == NULL) + goto error; + } + joined = PyObject_CallMethod(comma, "join", + "O", sorted_methods); + if (joined == NULL) + goto error; + + PyErr_Format(PyExc_TypeError, + "Can't instantiate abstract class %s " + "with abstract methods %U", + type->tp_name, + joined); + error: + Py_XDECREF(joined); + Py_XDECREF(sorted_methods); + Py_XDECREF(abstract_methods); + return NULL; + } + return type->tp_alloc(type, 0); } static void object_dealloc(PyObject *self) { - Py_TYPE(self)->tp_free(self); + Py_TYPE(self)->tp_free(self); } static PyObject * object_repr(PyObject *self) { - PyTypeObject *type; - PyObject *mod, *name, *rtn; - - type = Py_TYPE(self); - mod = type_module(type, NULL); - if (mod == NULL) - PyErr_Clear(); - else if (!PyUnicode_Check(mod)) { - Py_DECREF(mod); - mod = NULL; - } - name = type_name(type, NULL); - if (name == NULL) - return NULL; - if (mod != NULL && PyUnicode_CompareWithASCIIString(mod, "builtins")) - rtn = PyUnicode_FromFormat("<%U.%U object at %p>", mod, name, self); - else - rtn = PyUnicode_FromFormat("<%s object at %p>", - type->tp_name, self); - Py_XDECREF(mod); - Py_DECREF(name); - return rtn; + PyTypeObject *type; + PyObject *mod, *name, *rtn; + + type = Py_TYPE(self); + mod = type_module(type, NULL); + if (mod == NULL) + PyErr_Clear(); + else if (!PyUnicode_Check(mod)) { + Py_DECREF(mod); + mod = NULL; + } + name = type_name(type, NULL); + if (name == NULL) + return NULL; + if (mod != NULL && PyUnicode_CompareWithASCIIString(mod, "builtins")) + rtn = PyUnicode_FromFormat("<%U.%U object at %p>", mod, name, self); + else + rtn = PyUnicode_FromFormat("<%s object at %p>", + type->tp_name, self); + Py_XDECREF(mod); + Py_DECREF(name); + return rtn; } static PyObject * object_str(PyObject *self) { - unaryfunc f; + unaryfunc f; - f = Py_TYPE(self)->tp_repr; - if (f == NULL) - f = object_repr; - return f(self); + f = Py_TYPE(self)->tp_repr; + if (f == NULL) + f = object_repr; + return f(self); } static PyObject * object_richcompare(PyObject *self, PyObject *other, int op) { - PyObject *res; - - switch (op) { - - case Py_EQ: - /* Return NotImplemented instead of False, so if two - objects are compared, both get a chance at the - comparison. See issue #1393. */ - res = (self == other) ? Py_True : Py_NotImplemented; - Py_INCREF(res); - break; - - case Py_NE: - /* By default, != returns the opposite of ==, - unless the latter returns NotImplemented. */ - res = PyObject_RichCompare(self, other, Py_EQ); - if (res != NULL && res != Py_NotImplemented) { - int ok = PyObject_IsTrue(res); - Py_DECREF(res); - if (ok < 0) - res = NULL; - else { - if (ok) - res = Py_False; - else - res = Py_True; - Py_INCREF(res); - } - } - break; - - default: - res = Py_NotImplemented; - Py_INCREF(res); - break; - } - - return res; + PyObject *res; + + switch (op) { + + case Py_EQ: + /* Return NotImplemented instead of False, so if two + objects are compared, both get a chance at the + comparison. See issue #1393. */ + res = (self == other) ? Py_True : Py_NotImplemented; + Py_INCREF(res); + break; + + case Py_NE: + /* By default, != returns the opposite of ==, + unless the latter returns NotImplemented. */ + res = PyObject_RichCompare(self, other, Py_EQ); + if (res != NULL && res != Py_NotImplemented) { + int ok = PyObject_IsTrue(res); + Py_DECREF(res); + if (ok < 0) + res = NULL; + else { + if (ok) + res = Py_False; + else + res = Py_True; + Py_INCREF(res); + } + } + break; + + default: + res = Py_NotImplemented; + Py_INCREF(res); + break; + } + + return res; } static PyObject * object_get_class(PyObject *self, void *closure) { - Py_INCREF(Py_TYPE(self)); - return (PyObject *)(Py_TYPE(self)); + Py_INCREF(Py_TYPE(self)); + return (PyObject *)(Py_TYPE(self)); } static int equiv_structs(PyTypeObject *a, PyTypeObject *b) { - return a == b || - (a != NULL && - b != NULL && - a->tp_basicsize == b->tp_basicsize && - a->tp_itemsize == b->tp_itemsize && - a->tp_dictoffset == b->tp_dictoffset && - a->tp_weaklistoffset == b->tp_weaklistoffset && - ((a->tp_flags & Py_TPFLAGS_HAVE_GC) == - (b->tp_flags & Py_TPFLAGS_HAVE_GC))); + return a == b || + (a != NULL && + b != NULL && + a->tp_basicsize == b->tp_basicsize && + a->tp_itemsize == b->tp_itemsize && + a->tp_dictoffset == b->tp_dictoffset && + a->tp_weaklistoffset == b->tp_weaklistoffset && + ((a->tp_flags & Py_TPFLAGS_HAVE_GC) == + (b->tp_flags & Py_TPFLAGS_HAVE_GC))); } static int same_slots_added(PyTypeObject *a, PyTypeObject *b) { - PyTypeObject *base = a->tp_base; - Py_ssize_t size; - PyObject *slots_a, *slots_b; - - if (base != b->tp_base) - return 0; - if (equiv_structs(a, base) && equiv_structs(b, base)) - return 1; - size = base->tp_basicsize; - if (a->tp_dictoffset == size && b->tp_dictoffset == size) - size += sizeof(PyObject *); - if (a->tp_weaklistoffset == size && b->tp_weaklistoffset == size) - size += sizeof(PyObject *); - - /* Check slots compliance */ - slots_a = ((PyHeapTypeObject *)a)->ht_slots; - slots_b = ((PyHeapTypeObject *)b)->ht_slots; - if (slots_a && slots_b) { - if (PyObject_RichCompareBool(slots_a, slots_b, Py_EQ) != 1) - return 0; - size += sizeof(PyObject *) * PyTuple_GET_SIZE(slots_a); - } - return size == a->tp_basicsize && size == b->tp_basicsize; + PyTypeObject *base = a->tp_base; + Py_ssize_t size; + PyObject *slots_a, *slots_b; + + if (base != b->tp_base) + return 0; + if (equiv_structs(a, base) && equiv_structs(b, base)) + return 1; + size = base->tp_basicsize; + if (a->tp_dictoffset == size && b->tp_dictoffset == size) + size += sizeof(PyObject *); + if (a->tp_weaklistoffset == size && b->tp_weaklistoffset == size) + size += sizeof(PyObject *); + + /* Check slots compliance */ + slots_a = ((PyHeapTypeObject *)a)->ht_slots; + slots_b = ((PyHeapTypeObject *)b)->ht_slots; + if (slots_a && slots_b) { + if (PyObject_RichCompareBool(slots_a, slots_b, Py_EQ) != 1) + return 0; + size += sizeof(PyObject *) * PyTuple_GET_SIZE(slots_a); + } + return size == a->tp_basicsize && size == b->tp_basicsize; } static int compatible_for_assignment(PyTypeObject* oldto, PyTypeObject* newto, char* attr) { - PyTypeObject *newbase, *oldbase; - - if (newto->tp_dealloc != oldto->tp_dealloc || - newto->tp_free != oldto->tp_free) - { - PyErr_Format(PyExc_TypeError, - "%s assignment: " - "'%s' deallocator differs from '%s'", - attr, - newto->tp_name, - oldto->tp_name); - return 0; - } - newbase = newto; - oldbase = oldto; - while (equiv_structs(newbase, newbase->tp_base)) - newbase = newbase->tp_base; - while (equiv_structs(oldbase, oldbase->tp_base)) - oldbase = oldbase->tp_base; - if (newbase != oldbase && - (newbase->tp_base != oldbase->tp_base || - !same_slots_added(newbase, oldbase))) { - PyErr_Format(PyExc_TypeError, - "%s assignment: " - "'%s' object layout differs from '%s'", - attr, - newto->tp_name, - oldto->tp_name); - return 0; - } - - return 1; + PyTypeObject *newbase, *oldbase; + + if (newto->tp_dealloc != oldto->tp_dealloc || + newto->tp_free != oldto->tp_free) + { + PyErr_Format(PyExc_TypeError, + "%s assignment: " + "'%s' deallocator differs from '%s'", + attr, + newto->tp_name, + oldto->tp_name); + return 0; + } + newbase = newto; + oldbase = oldto; + while (equiv_structs(newbase, newbase->tp_base)) + newbase = newbase->tp_base; + while (equiv_structs(oldbase, oldbase->tp_base)) + oldbase = oldbase->tp_base; + if (newbase != oldbase && + (newbase->tp_base != oldbase->tp_base || + !same_slots_added(newbase, oldbase))) { + PyErr_Format(PyExc_TypeError, + "%s assignment: " + "'%s' object layout differs from '%s'", + attr, + newto->tp_name, + oldto->tp_name); + return 0; + } + + return 1; } static int object_set_class(PyObject *self, PyObject *value, void *closure) { - PyTypeObject *oldto = Py_TYPE(self); - PyTypeObject *newto; - - if (value == NULL) { - PyErr_SetString(PyExc_TypeError, - "can't delete __class__ attribute"); - return -1; - } - if (!PyType_Check(value)) { - PyErr_Format(PyExc_TypeError, - "__class__ must be set to new-style class, not '%s' object", - Py_TYPE(value)->tp_name); - return -1; - } - newto = (PyTypeObject *)value; - if (!(newto->tp_flags & Py_TPFLAGS_HEAPTYPE) || - !(oldto->tp_flags & Py_TPFLAGS_HEAPTYPE)) - { - PyErr_Format(PyExc_TypeError, - "__class__ assignment: only for heap types"); - return -1; - } - if (compatible_for_assignment(newto, oldto, "__class__")) { - Py_INCREF(newto); - Py_TYPE(self) = newto; - Py_DECREF(oldto); - return 0; - } - else { - return -1; - } + PyTypeObject *oldto = Py_TYPE(self); + PyTypeObject *newto; + + if (value == NULL) { + PyErr_SetString(PyExc_TypeError, + "can't delete __class__ attribute"); + return -1; + } + if (!PyType_Check(value)) { + PyErr_Format(PyExc_TypeError, + "__class__ must be set to new-style class, not '%s' object", + Py_TYPE(value)->tp_name); + return -1; + } + newto = (PyTypeObject *)value; + if (!(newto->tp_flags & Py_TPFLAGS_HEAPTYPE) || + !(oldto->tp_flags & Py_TPFLAGS_HEAPTYPE)) + { + PyErr_Format(PyExc_TypeError, + "__class__ assignment: only for heap types"); + return -1; + } + if (compatible_for_assignment(newto, oldto, "__class__")) { + Py_INCREF(newto); + Py_TYPE(self) = newto; + Py_DECREF(oldto); + return 0; + } + else { + return -1; + } } static PyGetSetDef object_getsets[] = { - {"__class__", object_get_class, object_set_class, - PyDoc_STR("the object's class")}, - {0} + {"__class__", object_get_class, object_set_class, + PyDoc_STR("the object's class")}, + {0} }; @@ -2996,194 +2996,194 @@ static PyGetSetDef object_getsets[] = { static PyObject * import_copyreg(void) { - static PyObject *copyreg_str; + static PyObject *copyreg_str; - if (!copyreg_str) { - copyreg_str = PyUnicode_InternFromString("copyreg"); - if (copyreg_str == NULL) - return NULL; - } + if (!copyreg_str) { + copyreg_str = PyUnicode_InternFromString("copyreg"); + if (copyreg_str == NULL) + return NULL; + } - return PyImport_Import(copyreg_str); + return PyImport_Import(copyreg_str); } static PyObject * slotnames(PyObject *cls) { - PyObject *clsdict; - PyObject *copyreg; - PyObject *slotnames; - - if (!PyType_Check(cls)) { - Py_INCREF(Py_None); - return Py_None; - } - - clsdict = ((PyTypeObject *)cls)->tp_dict; - slotnames = PyDict_GetItemString(clsdict, "__slotnames__"); - if (slotnames != NULL && PyList_Check(slotnames)) { - Py_INCREF(slotnames); - return slotnames; - } - - copyreg = import_copyreg(); - if (copyreg == NULL) - return NULL; - - slotnames = PyObject_CallMethod(copyreg, "_slotnames", "O", cls); - Py_DECREF(copyreg); - if (slotnames != NULL && - slotnames != Py_None && - !PyList_Check(slotnames)) - { - PyErr_SetString(PyExc_TypeError, - "copyreg._slotnames didn't return a list or None"); - Py_DECREF(slotnames); - slotnames = NULL; - } - - return slotnames; + PyObject *clsdict; + PyObject *copyreg; + PyObject *slotnames; + + if (!PyType_Check(cls)) { + Py_INCREF(Py_None); + return Py_None; + } + + clsdict = ((PyTypeObject *)cls)->tp_dict; + slotnames = PyDict_GetItemString(clsdict, "__slotnames__"); + if (slotnames != NULL && PyList_Check(slotnames)) { + Py_INCREF(slotnames); + return slotnames; + } + + copyreg = import_copyreg(); + if (copyreg == NULL) + return NULL; + + slotnames = PyObject_CallMethod(copyreg, "_slotnames", "O", cls); + Py_DECREF(copyreg); + if (slotnames != NULL && + slotnames != Py_None && + !PyList_Check(slotnames)) + { + PyErr_SetString(PyExc_TypeError, + "copyreg._slotnames didn't return a list or None"); + Py_DECREF(slotnames); + slotnames = NULL; + } + + return slotnames; } static PyObject * reduce_2(PyObject *obj) { - PyObject *cls, *getnewargs; - PyObject *args = NULL, *args2 = NULL; - PyObject *getstate = NULL, *state = NULL, *names = NULL; - PyObject *slots = NULL, *listitems = NULL, *dictitems = NULL; - PyObject *copyreg = NULL, *newobj = NULL, *res = NULL; - Py_ssize_t i, n; - - cls = PyObject_GetAttrString(obj, "__class__"); - if (cls == NULL) - return NULL; - - getnewargs = PyObject_GetAttrString(obj, "__getnewargs__"); - if (getnewargs != NULL) { - args = PyObject_CallObject(getnewargs, NULL); - Py_DECREF(getnewargs); - if (args != NULL && !PyTuple_Check(args)) { - PyErr_Format(PyExc_TypeError, - "__getnewargs__ should return a tuple, " - "not '%.200s'", Py_TYPE(args)->tp_name); - goto end; - } - } - else { - PyErr_Clear(); - args = PyTuple_New(0); - } - if (args == NULL) - goto end; - - getstate = PyObject_GetAttrString(obj, "__getstate__"); - if (getstate != NULL) { - state = PyObject_CallObject(getstate, NULL); - Py_DECREF(getstate); - if (state == NULL) - goto end; - } - else { - PyErr_Clear(); - state = PyObject_GetAttrString(obj, "__dict__"); - if (state == NULL) { - PyErr_Clear(); - state = Py_None; - Py_INCREF(state); - } - names = slotnames(cls); - if (names == NULL) - goto end; - if (names != Py_None) { - assert(PyList_Check(names)); - slots = PyDict_New(); - if (slots == NULL) - goto end; - n = 0; - /* Can't pre-compute the list size; the list - is stored on the class so accessible to other - threads, which may be run by DECREF */ - for (i = 0; i < PyList_GET_SIZE(names); i++) { - PyObject *name, *value; - name = PyList_GET_ITEM(names, i); - value = PyObject_GetAttr(obj, name); - if (value == NULL) - PyErr_Clear(); - else { - int err = PyDict_SetItem(slots, name, - value); - Py_DECREF(value); - if (err) - goto end; - n++; - } - } - if (n) { - state = Py_BuildValue("(NO)", state, slots); - if (state == NULL) - goto end; - } - } - } - - if (!PyList_Check(obj)) { - listitems = Py_None; - Py_INCREF(listitems); - } - else { - listitems = PyObject_GetIter(obj); - if (listitems == NULL) - goto end; - } - - if (!PyDict_Check(obj)) { - dictitems = Py_None; - Py_INCREF(dictitems); - } - else { - PyObject *items = PyObject_CallMethod(obj, "items", ""); - if (items == NULL) - goto end; - dictitems = PyObject_GetIter(items); - Py_DECREF(items); - if (dictitems == NULL) - goto end; - } - - copyreg = import_copyreg(); - if (copyreg == NULL) - goto end; - newobj = PyObject_GetAttrString(copyreg, "__newobj__"); - if (newobj == NULL) - goto end; - - n = PyTuple_GET_SIZE(args); - args2 = PyTuple_New(n+1); - if (args2 == NULL) - goto end; - PyTuple_SET_ITEM(args2, 0, cls); - cls = NULL; - for (i = 0; i < n; i++) { - PyObject *v = PyTuple_GET_ITEM(args, i); - Py_INCREF(v); - PyTuple_SET_ITEM(args2, i+1, v); - } - - res = PyTuple_Pack(5, newobj, args2, state, listitems, dictitems); + PyObject *cls, *getnewargs; + PyObject *args = NULL, *args2 = NULL; + PyObject *getstate = NULL, *state = NULL, *names = NULL; + PyObject *slots = NULL, *listitems = NULL, *dictitems = NULL; + PyObject *copyreg = NULL, *newobj = NULL, *res = NULL; + Py_ssize_t i, n; + + cls = PyObject_GetAttrString(obj, "__class__"); + if (cls == NULL) + return NULL; + + getnewargs = PyObject_GetAttrString(obj, "__getnewargs__"); + if (getnewargs != NULL) { + args = PyObject_CallObject(getnewargs, NULL); + Py_DECREF(getnewargs); + if (args != NULL && !PyTuple_Check(args)) { + PyErr_Format(PyExc_TypeError, + "__getnewargs__ should return a tuple, " + "not '%.200s'", Py_TYPE(args)->tp_name); + goto end; + } + } + else { + PyErr_Clear(); + args = PyTuple_New(0); + } + if (args == NULL) + goto end; + + getstate = PyObject_GetAttrString(obj, "__getstate__"); + if (getstate != NULL) { + state = PyObject_CallObject(getstate, NULL); + Py_DECREF(getstate); + if (state == NULL) + goto end; + } + else { + PyErr_Clear(); + state = PyObject_GetAttrString(obj, "__dict__"); + if (state == NULL) { + PyErr_Clear(); + state = Py_None; + Py_INCREF(state); + } + names = slotnames(cls); + if (names == NULL) + goto end; + if (names != Py_None) { + assert(PyList_Check(names)); + slots = PyDict_New(); + if (slots == NULL) + goto end; + n = 0; + /* Can't pre-compute the list size; the list + is stored on the class so accessible to other + threads, which may be run by DECREF */ + for (i = 0; i < PyList_GET_SIZE(names); i++) { + PyObject *name, *value; + name = PyList_GET_ITEM(names, i); + value = PyObject_GetAttr(obj, name); + if (value == NULL) + PyErr_Clear(); + else { + int err = PyDict_SetItem(slots, name, + value); + Py_DECREF(value); + if (err) + goto end; + n++; + } + } + if (n) { + state = Py_BuildValue("(NO)", state, slots); + if (state == NULL) + goto end; + } + } + } + + if (!PyList_Check(obj)) { + listitems = Py_None; + Py_INCREF(listitems); + } + else { + listitems = PyObject_GetIter(obj); + if (listitems == NULL) + goto end; + } + + if (!PyDict_Check(obj)) { + dictitems = Py_None; + Py_INCREF(dictitems); + } + else { + PyObject *items = PyObject_CallMethod(obj, "items", ""); + if (items == NULL) + goto end; + dictitems = PyObject_GetIter(items); + Py_DECREF(items); + if (dictitems == NULL) + goto end; + } + + copyreg = import_copyreg(); + if (copyreg == NULL) + goto end; + newobj = PyObject_GetAttrString(copyreg, "__newobj__"); + if (newobj == NULL) + goto end; + + n = PyTuple_GET_SIZE(args); + args2 = PyTuple_New(n+1); + if (args2 == NULL) + goto end; + PyTuple_SET_ITEM(args2, 0, cls); + cls = NULL; + for (i = 0; i < n; i++) { + PyObject *v = PyTuple_GET_ITEM(args, i); + Py_INCREF(v); + PyTuple_SET_ITEM(args2, i+1, v); + } + + res = PyTuple_Pack(5, newobj, args2, state, listitems, dictitems); end: - Py_XDECREF(cls); - Py_XDECREF(args); - Py_XDECREF(args2); - Py_XDECREF(slots); - Py_XDECREF(state); - Py_XDECREF(names); - Py_XDECREF(listitems); - Py_XDECREF(dictitems); - Py_XDECREF(copyreg); - Py_XDECREF(newobj); - return res; + Py_XDECREF(cls); + Py_XDECREF(args); + Py_XDECREF(args2); + Py_XDECREF(slots); + Py_XDECREF(state); + Py_XDECREF(names); + Py_XDECREF(listitems); + Py_XDECREF(dictitems); + Py_XDECREF(copyreg); + Py_XDECREF(newobj); + return res; } /* @@ -3204,79 +3204,79 @@ reduce_2(PyObject *obj) static PyObject * _common_reduce(PyObject *self, int proto) { - PyObject *copyreg, *res; + PyObject *copyreg, *res; - if (proto >= 2) - return reduce_2(self); + if (proto >= 2) + return reduce_2(self); - copyreg = import_copyreg(); - if (!copyreg) - return NULL; + copyreg = import_copyreg(); + if (!copyreg) + return NULL; - res = PyEval_CallMethod(copyreg, "_reduce_ex", "(Oi)", self, proto); - Py_DECREF(copyreg); + res = PyEval_CallMethod(copyreg, "_reduce_ex", "(Oi)", self, proto); + Py_DECREF(copyreg); - return res; + return res; } static PyObject * object_reduce(PyObject *self, PyObject *args) { - int proto = 0; + int proto = 0; - if (!PyArg_ParseTuple(args, "|i:__reduce__", &proto)) - return NULL; + if (!PyArg_ParseTuple(args, "|i:__reduce__", &proto)) + return NULL; - return _common_reduce(self, proto); + return _common_reduce(self, proto); } static PyObject * object_reduce_ex(PyObject *self, PyObject *args) { - PyObject *reduce, *res; - int proto = 0; - - if (!PyArg_ParseTuple(args, "|i:__reduce_ex__", &proto)) - return NULL; - - reduce = PyObject_GetAttrString(self, "__reduce__"); - if (reduce == NULL) - PyErr_Clear(); - else { - PyObject *cls, *clsreduce, *objreduce; - int override; - cls = PyObject_GetAttrString(self, "__class__"); - if (cls == NULL) { - Py_DECREF(reduce); - return NULL; - } - clsreduce = PyObject_GetAttrString(cls, "__reduce__"); - Py_DECREF(cls); - if (clsreduce == NULL) { - Py_DECREF(reduce); - return NULL; - } - objreduce = PyDict_GetItemString(PyBaseObject_Type.tp_dict, - "__reduce__"); - override = (clsreduce != objreduce); - Py_DECREF(clsreduce); - if (override) { - res = PyObject_CallObject(reduce, NULL); - Py_DECREF(reduce); - return res; - } - else - Py_DECREF(reduce); - } - - return _common_reduce(self, proto); + PyObject *reduce, *res; + int proto = 0; + + if (!PyArg_ParseTuple(args, "|i:__reduce_ex__", &proto)) + return NULL; + + reduce = PyObject_GetAttrString(self, "__reduce__"); + if (reduce == NULL) + PyErr_Clear(); + else { + PyObject *cls, *clsreduce, *objreduce; + int override; + cls = PyObject_GetAttrString(self, "__class__"); + if (cls == NULL) { + Py_DECREF(reduce); + return NULL; + } + clsreduce = PyObject_GetAttrString(cls, "__reduce__"); + Py_DECREF(cls); + if (clsreduce == NULL) { + Py_DECREF(reduce); + return NULL; + } + objreduce = PyDict_GetItemString(PyBaseObject_Type.tp_dict, + "__reduce__"); + override = (clsreduce != objreduce); + Py_DECREF(clsreduce); + if (override) { + res = PyObject_CallObject(reduce, NULL); + Py_DECREF(reduce); + return res; + } + else + Py_DECREF(reduce); + } + + return _common_reduce(self, proto); } static PyObject * object_subclasshook(PyObject *cls, PyObject *args) { - Py_INCREF(Py_NotImplemented); - return Py_NotImplemented; + Py_INCREF(Py_NotImplemented); + return Py_NotImplemented; } PyDoc_STRVAR(object_subclasshook_doc, @@ -3292,104 +3292,104 @@ PyDoc_STRVAR(object_subclasshook_doc, class object: def __format__(self, format_spec): - return format(str(self), format_spec) + return format(str(self), format_spec) */ static PyObject * object_format(PyObject *self, PyObject *args) { - PyObject *format_spec; - PyObject *self_as_str = NULL; - PyObject *result = NULL; - PyObject *format_meth = NULL; - - if (!PyArg_ParseTuple(args, "U:__format__", &format_spec)) - return NULL; - - self_as_str = PyObject_Str(self); - if (self_as_str != NULL) { - /* find the format function */ - format_meth = PyObject_GetAttrString(self_as_str, "__format__"); - if (format_meth != NULL) { - /* and call it */ - result = PyObject_CallFunctionObjArgs(format_meth, format_spec, NULL); - } + PyObject *format_spec; + PyObject *self_as_str = NULL; + PyObject *result = NULL; + PyObject *format_meth = NULL; + + if (!PyArg_ParseTuple(args, "U:__format__", &format_spec)) + return NULL; + + self_as_str = PyObject_Str(self); + if (self_as_str != NULL) { + /* find the format function */ + format_meth = PyObject_GetAttrString(self_as_str, "__format__"); + if (format_meth != NULL) { + /* and call it */ + result = PyObject_CallFunctionObjArgs(format_meth, format_spec, NULL); } + } - Py_XDECREF(self_as_str); - Py_XDECREF(format_meth); + Py_XDECREF(self_as_str); + Py_XDECREF(format_meth); - return result; + return result; } static PyObject * object_sizeof(PyObject *self, PyObject *args) { - Py_ssize_t res, isize; + Py_ssize_t res, isize; - res = 0; - isize = self->ob_type->tp_itemsize; - if (isize > 0) - res = Py_SIZE(self->ob_type) * isize; - res += self->ob_type->tp_basicsize; + res = 0; + isize = self->ob_type->tp_itemsize; + if (isize > 0) + res = Py_SIZE(self->ob_type) * isize; + res += self->ob_type->tp_basicsize; - return PyLong_FromSsize_t(res); + return PyLong_FromSsize_t(res); } static PyMethodDef object_methods[] = { - {"__reduce_ex__", object_reduce_ex, METH_VARARGS, - PyDoc_STR("helper for pickle")}, - {"__reduce__", object_reduce, METH_VARARGS, - PyDoc_STR("helper for pickle")}, - {"__subclasshook__", object_subclasshook, METH_CLASS | METH_VARARGS, - object_subclasshook_doc}, - {"__format__", object_format, METH_VARARGS, - PyDoc_STR("default object formatter")}, - {"__sizeof__", object_sizeof, METH_NOARGS, - PyDoc_STR("__sizeof__() -> size of object in memory, in bytes")}, - {0} + {"__reduce_ex__", object_reduce_ex, METH_VARARGS, + PyDoc_STR("helper for pickle")}, + {"__reduce__", object_reduce, METH_VARARGS, + PyDoc_STR("helper for pickle")}, + {"__subclasshook__", object_subclasshook, METH_CLASS | METH_VARARGS, + object_subclasshook_doc}, + {"__format__", object_format, METH_VARARGS, + PyDoc_STR("default object formatter")}, + {"__sizeof__", object_sizeof, METH_NOARGS, + PyDoc_STR("__sizeof__() -> size of object in memory, in bytes")}, + {0} }; PyTypeObject PyBaseObject_Type = { - PyVarObject_HEAD_INIT(&PyType_Type, 0) - "object", /* tp_name */ - sizeof(PyObject), /* tp_basicsize */ - 0, /* tp_itemsize */ - object_dealloc, /* tp_dealloc */ - 0, /* tp_print */ - 0, /* tp_getattr */ - 0, /* tp_setattr */ - 0, /* tp_reserved */ - object_repr, /* tp_repr */ - 0, /* tp_as_number */ - 0, /* tp_as_sequence */ - 0, /* tp_as_mapping */ - (hashfunc)_Py_HashPointer, /* tp_hash */ - 0, /* tp_call */ - object_str, /* tp_str */ - PyObject_GenericGetAttr, /* tp_getattro */ - PyObject_GenericSetAttr, /* tp_setattro */ - 0, /* tp_as_buffer */ - Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */ - PyDoc_STR("The most base type"), /* tp_doc */ - 0, /* tp_traverse */ - 0, /* tp_clear */ - object_richcompare, /* tp_richcompare */ - 0, /* tp_weaklistoffset */ - 0, /* tp_iter */ - 0, /* tp_iternext */ - object_methods, /* tp_methods */ - 0, /* tp_members */ - object_getsets, /* tp_getset */ - 0, /* tp_base */ - 0, /* tp_dict */ - 0, /* tp_descr_get */ - 0, /* tp_descr_set */ - 0, /* tp_dictoffset */ - object_init, /* tp_init */ - PyType_GenericAlloc, /* tp_alloc */ - object_new, /* tp_new */ - PyObject_Del, /* tp_free */ + PyVarObject_HEAD_INIT(&PyType_Type, 0) + "object", /* tp_name */ + sizeof(PyObject), /* tp_basicsize */ + 0, /* tp_itemsize */ + object_dealloc, /* tp_dealloc */ + 0, /* tp_print */ + 0, /* tp_getattr */ + 0, /* tp_setattr */ + 0, /* tp_reserved */ + object_repr, /* tp_repr */ + 0, /* tp_as_number */ + 0, /* tp_as_sequence */ + 0, /* tp_as_mapping */ + (hashfunc)_Py_HashPointer, /* tp_hash */ + 0, /* tp_call */ + object_str, /* tp_str */ + PyObject_GenericGetAttr, /* tp_getattro */ + PyObject_GenericSetAttr, /* tp_setattro */ + 0, /* tp_as_buffer */ + Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */ + PyDoc_STR("The most base type"), /* tp_doc */ + 0, /* tp_traverse */ + 0, /* tp_clear */ + object_richcompare, /* tp_richcompare */ + 0, /* tp_weaklistoffset */ + 0, /* tp_iter */ + 0, /* tp_iternext */ + object_methods, /* tp_methods */ + 0, /* tp_members */ + object_getsets, /* tp_getset */ + 0, /* tp_base */ + 0, /* tp_dict */ + 0, /* tp_descr_get */ + 0, /* tp_descr_set */ + 0, /* tp_dictoffset */ + object_init, /* tp_init */ + PyType_GenericAlloc, /* tp_alloc */ + object_new, /* tp_new */ + PyObject_Del, /* tp_free */ }; @@ -3398,168 +3398,168 @@ PyTypeObject PyBaseObject_Type = { static int add_methods(PyTypeObject *type, PyMethodDef *meth) { - PyObject *dict = type->tp_dict; - - for (; meth->ml_name != NULL; meth++) { - PyObject *descr; - if (PyDict_GetItemString(dict, meth->ml_name) && - !(meth->ml_flags & METH_COEXIST)) - continue; - if (meth->ml_flags & METH_CLASS) { - if (meth->ml_flags & METH_STATIC) { - PyErr_SetString(PyExc_ValueError, - "method cannot be both class and static"); - return -1; - } - descr = PyDescr_NewClassMethod(type, meth); - } - else if (meth->ml_flags & METH_STATIC) { - PyObject *cfunc = PyCFunction_New(meth, NULL); - if (cfunc == NULL) - return -1; - descr = PyStaticMethod_New(cfunc); - Py_DECREF(cfunc); - } - else { - descr = PyDescr_NewMethod(type, meth); - } - if (descr == NULL) - return -1; - if (PyDict_SetItemString(dict, meth->ml_name, descr) < 0) - return -1; - Py_DECREF(descr); - } - return 0; + PyObject *dict = type->tp_dict; + + for (; meth->ml_name != NULL; meth++) { + PyObject *descr; + if (PyDict_GetItemString(dict, meth->ml_name) && + !(meth->ml_flags & METH_COEXIST)) + continue; + if (meth->ml_flags & METH_CLASS) { + if (meth->ml_flags & METH_STATIC) { + PyErr_SetString(PyExc_ValueError, + "method cannot be both class and static"); + return -1; + } + descr = PyDescr_NewClassMethod(type, meth); + } + else if (meth->ml_flags & METH_STATIC) { + PyObject *cfunc = PyCFunction_New(meth, NULL); + if (cfunc == NULL) + return -1; + descr = PyStaticMethod_New(cfunc); + Py_DECREF(cfunc); + } + else { + descr = PyDescr_NewMethod(type, meth); + } + if (descr == NULL) + return -1; + if (PyDict_SetItemString(dict, meth->ml_name, descr) < 0) + return -1; + Py_DECREF(descr); + } + return 0; } static int add_members(PyTypeObject *type, PyMemberDef *memb) { - PyObject *dict = type->tp_dict; + PyObject *dict = type->tp_dict; - for (; memb->name != NULL; memb++) { - PyObject *descr; - if (PyDict_GetItemString(dict, memb->name)) - continue; - descr = PyDescr_NewMember(type, memb); - if (descr == NULL) - return -1; - if (PyDict_SetItemString(dict, memb->name, descr) < 0) - return -1; - Py_DECREF(descr); - } - return 0; + for (; memb->name != NULL; memb++) { + PyObject *descr; + if (PyDict_GetItemString(dict, memb->name)) + continue; + descr = PyDescr_NewMember(type, memb); + if (descr == NULL) + return -1; + if (PyDict_SetItemString(dict, memb->name, descr) < 0) + return -1; + Py_DECREF(descr); + } + return 0; } static int add_getset(PyTypeObject *type, PyGetSetDef *gsp) { - PyObject *dict = type->tp_dict; + PyObject *dict = type->tp_dict; - for (; gsp->name != NULL; gsp++) { - PyObject *descr; - if (PyDict_GetItemString(dict, gsp->name)) - continue; - descr = PyDescr_NewGetSet(type, gsp); + for (; gsp->name != NULL; gsp++) { + PyObject *descr; + if (PyDict_GetItemString(dict, gsp->name)) + continue; + descr = PyDescr_NewGetSet(type, gsp); - if (descr == NULL) - return -1; - if (PyDict_SetItemString(dict, gsp->name, descr) < 0) - return -1; - Py_DECREF(descr); - } - return 0; + if (descr == NULL) + return -1; + if (PyDict_SetItemString(dict, gsp->name, descr) < 0) + return -1; + Py_DECREF(descr); + } + return 0; } static void inherit_special(PyTypeObject *type, PyTypeObject *base) { - Py_ssize_t oldsize, newsize; - - /* Copying basicsize is connected to the GC flags */ - oldsize = base->tp_basicsize; - newsize = type->tp_basicsize ? type->tp_basicsize : oldsize; - if (!(type->tp_flags & Py_TPFLAGS_HAVE_GC) && - (base->tp_flags & Py_TPFLAGS_HAVE_GC) && - (!type->tp_traverse && !type->tp_clear)) { - type->tp_flags |= Py_TPFLAGS_HAVE_GC; - if (type->tp_traverse == NULL) - type->tp_traverse = base->tp_traverse; - if (type->tp_clear == NULL) - type->tp_clear = base->tp_clear; - } - { - /* The condition below could use some explanation. - It appears that tp_new is not inherited for static types - whose base class is 'object'; this seems to be a precaution - so that old extension types don't suddenly become - callable (object.__new__ wouldn't insure the invariants - that the extension type's own factory function ensures). - Heap types, of course, are under our control, so they do - inherit tp_new; static extension types that specify some - other built-in type as the default are considered - new-style-aware so they also inherit object.__new__. */ - if (base != &PyBaseObject_Type || - (type->tp_flags & Py_TPFLAGS_HEAPTYPE)) { - if (type->tp_new == NULL) - type->tp_new = base->tp_new; - } - } - type->tp_basicsize = newsize; - - /* Copy other non-function slots */ + Py_ssize_t oldsize, newsize; + + /* Copying basicsize is connected to the GC flags */ + oldsize = base->tp_basicsize; + newsize = type->tp_basicsize ? type->tp_basicsize : oldsize; + if (!(type->tp_flags & Py_TPFLAGS_HAVE_GC) && + (base->tp_flags & Py_TPFLAGS_HAVE_GC) && + (!type->tp_traverse && !type->tp_clear)) { + type->tp_flags |= Py_TPFLAGS_HAVE_GC; + if (type->tp_traverse == NULL) + type->tp_traverse = base->tp_traverse; + if (type->tp_clear == NULL) + type->tp_clear = base->tp_clear; + } + { + /* The condition below could use some explanation. + It appears that tp_new is not inherited for static types + whose base class is 'object'; this seems to be a precaution + so that old extension types don't suddenly become + callable (object.__new__ wouldn't insure the invariants + that the extension type's own factory function ensures). + Heap types, of course, are under our control, so they do + inherit tp_new; static extension types that specify some + other built-in type as the default are considered + new-style-aware so they also inherit object.__new__. */ + if (base != &PyBaseObject_Type || + (type->tp_flags & Py_TPFLAGS_HEAPTYPE)) { + if (type->tp_new == NULL) + type->tp_new = base->tp_new; + } + } + type->tp_basicsize = newsize; + + /* Copy other non-function slots */ #undef COPYVAL #define COPYVAL(SLOT) \ - if (type->SLOT == 0) type->SLOT = base->SLOT - - COPYVAL(tp_itemsize); - COPYVAL(tp_weaklistoffset); - COPYVAL(tp_dictoffset); - - /* Setup fast subclass flags */ - if (PyType_IsSubtype(base, (PyTypeObject*)PyExc_BaseException)) - type->tp_flags |= Py_TPFLAGS_BASE_EXC_SUBCLASS; - else if (PyType_IsSubtype(base, &PyType_Type)) - type->tp_flags |= Py_TPFLAGS_TYPE_SUBCLASS; - else if (PyType_IsSubtype(base, &PyLong_Type)) - type->tp_flags |= Py_TPFLAGS_LONG_SUBCLASS; - else if (PyType_IsSubtype(base, &PyBytes_Type)) - type->tp_flags |= Py_TPFLAGS_BYTES_SUBCLASS; - else if (PyType_IsSubtype(base, &PyUnicode_Type)) - type->tp_flags |= Py_TPFLAGS_UNICODE_SUBCLASS; - else if (PyType_IsSubtype(base, &PyTuple_Type)) - type->tp_flags |= Py_TPFLAGS_TUPLE_SUBCLASS; - else if (PyType_IsSubtype(base, &PyList_Type)) - type->tp_flags |= Py_TPFLAGS_LIST_SUBCLASS; - else if (PyType_IsSubtype(base, &PyDict_Type)) - type->tp_flags |= Py_TPFLAGS_DICT_SUBCLASS; + if (type->SLOT == 0) type->SLOT = base->SLOT + + COPYVAL(tp_itemsize); + COPYVAL(tp_weaklistoffset); + COPYVAL(tp_dictoffset); + + /* Setup fast subclass flags */ + if (PyType_IsSubtype(base, (PyTypeObject*)PyExc_BaseException)) + type->tp_flags |= Py_TPFLAGS_BASE_EXC_SUBCLASS; + else if (PyType_IsSubtype(base, &PyType_Type)) + type->tp_flags |= Py_TPFLAGS_TYPE_SUBCLASS; + else if (PyType_IsSubtype(base, &PyLong_Type)) + type->tp_flags |= Py_TPFLAGS_LONG_SUBCLASS; + else if (PyType_IsSubtype(base, &PyBytes_Type)) + type->tp_flags |= Py_TPFLAGS_BYTES_SUBCLASS; + else if (PyType_IsSubtype(base, &PyUnicode_Type)) + type->tp_flags |= Py_TPFLAGS_UNICODE_SUBCLASS; + else if (PyType_IsSubtype(base, &PyTuple_Type)) + type->tp_flags |= Py_TPFLAGS_TUPLE_SUBCLASS; + else if (PyType_IsSubtype(base, &PyList_Type)) + type->tp_flags |= Py_TPFLAGS_LIST_SUBCLASS; + else if (PyType_IsSubtype(base, &PyDict_Type)) + type->tp_flags |= Py_TPFLAGS_DICT_SUBCLASS; } static char *hash_name_op[] = { - "__eq__", - "__hash__", - NULL + "__eq__", + "__hash__", + NULL }; static int overrides_hash(PyTypeObject *type) { - char **p; - PyObject *dict = type->tp_dict; + char **p; + PyObject *dict = type->tp_dict; - assert(dict != NULL); - for (p = hash_name_op; *p; p++) { - if (PyDict_GetItemString(dict, *p) != NULL) - return 1; - } - return 0; + assert(dict != NULL); + for (p = hash_name_op; *p; p++) { + if (PyDict_GetItemString(dict, *p) != NULL) + return 1; + } + return 0; } static void inherit_slots(PyTypeObject *type, PyTypeObject *base) { - PyTypeObject *basebase; + PyTypeObject *basebase; #undef SLOTDEFINED #undef COPYSLOT @@ -3569,147 +3569,147 @@ inherit_slots(PyTypeObject *type, PyTypeObject *base) #undef COPYBUF #define SLOTDEFINED(SLOT) \ - (base->SLOT != 0 && \ - (basebase == NULL || base->SLOT != basebase->SLOT)) + (base->SLOT != 0 && \ + (basebase == NULL || base->SLOT != basebase->SLOT)) #define COPYSLOT(SLOT) \ - if (!type->SLOT && SLOTDEFINED(SLOT)) type->SLOT = base->SLOT + if (!type->SLOT && SLOTDEFINED(SLOT)) type->SLOT = base->SLOT #define COPYNUM(SLOT) COPYSLOT(tp_as_number->SLOT) #define COPYSEQ(SLOT) COPYSLOT(tp_as_sequence->SLOT) #define COPYMAP(SLOT) COPYSLOT(tp_as_mapping->SLOT) #define COPYBUF(SLOT) COPYSLOT(tp_as_buffer->SLOT) - /* This won't inherit indirect slots (from tp_as_number etc.) - if type doesn't provide the space. */ - - if (type->tp_as_number != NULL && base->tp_as_number != NULL) { - basebase = base->tp_base; - if (basebase->tp_as_number == NULL) - basebase = NULL; - COPYNUM(nb_add); - COPYNUM(nb_subtract); - COPYNUM(nb_multiply); - COPYNUM(nb_remainder); - COPYNUM(nb_divmod); - COPYNUM(nb_power); - COPYNUM(nb_negative); - COPYNUM(nb_positive); - COPYNUM(nb_absolute); - COPYNUM(nb_bool); - COPYNUM(nb_invert); - COPYNUM(nb_lshift); - COPYNUM(nb_rshift); - COPYNUM(nb_and); - COPYNUM(nb_xor); - COPYNUM(nb_or); - COPYNUM(nb_int); - COPYNUM(nb_float); - COPYNUM(nb_inplace_add); - COPYNUM(nb_inplace_subtract); - COPYNUM(nb_inplace_multiply); - COPYNUM(nb_inplace_remainder); - COPYNUM(nb_inplace_power); - COPYNUM(nb_inplace_lshift); - COPYNUM(nb_inplace_rshift); - COPYNUM(nb_inplace_and); - COPYNUM(nb_inplace_xor); - COPYNUM(nb_inplace_or); - COPYNUM(nb_true_divide); - COPYNUM(nb_floor_divide); - COPYNUM(nb_inplace_true_divide); - COPYNUM(nb_inplace_floor_divide); - COPYNUM(nb_index); - } - - if (type->tp_as_sequence != NULL && base->tp_as_sequence != NULL) { - basebase = base->tp_base; - if (basebase->tp_as_sequence == NULL) - basebase = NULL; - COPYSEQ(sq_length); - COPYSEQ(sq_concat); - COPYSEQ(sq_repeat); - COPYSEQ(sq_item); - COPYSEQ(sq_ass_item); - COPYSEQ(sq_contains); - COPYSEQ(sq_inplace_concat); - COPYSEQ(sq_inplace_repeat); - } - - if (type->tp_as_mapping != NULL && base->tp_as_mapping != NULL) { - basebase = base->tp_base; - if (basebase->tp_as_mapping == NULL) - basebase = NULL; - COPYMAP(mp_length); - COPYMAP(mp_subscript); - COPYMAP(mp_ass_subscript); - } - - if (type->tp_as_buffer != NULL && base->tp_as_buffer != NULL) { - basebase = base->tp_base; - if (basebase->tp_as_buffer == NULL) - basebase = NULL; - COPYBUF(bf_getbuffer); - COPYBUF(bf_releasebuffer); - } - - basebase = base->tp_base; - - COPYSLOT(tp_dealloc); - if (type->tp_getattr == NULL && type->tp_getattro == NULL) { - type->tp_getattr = base->tp_getattr; - type->tp_getattro = base->tp_getattro; - } - if (type->tp_setattr == NULL && type->tp_setattro == NULL) { - type->tp_setattr = base->tp_setattr; - type->tp_setattro = base->tp_setattro; - } - /* tp_reserved is ignored */ - COPYSLOT(tp_repr); - /* tp_hash see tp_richcompare */ - COPYSLOT(tp_call); - COPYSLOT(tp_str); - { - /* Copy comparison-related slots only when - not overriding them anywhere */ - if (type->tp_richcompare == NULL && - type->tp_hash == NULL && - !overrides_hash(type)) - { - type->tp_richcompare = base->tp_richcompare; - type->tp_hash = base->tp_hash; - } - } - { - COPYSLOT(tp_iter); - COPYSLOT(tp_iternext); - } - { - COPYSLOT(tp_descr_get); - COPYSLOT(tp_descr_set); - COPYSLOT(tp_dictoffset); - COPYSLOT(tp_init); - COPYSLOT(tp_alloc); - COPYSLOT(tp_is_gc); - if ((type->tp_flags & Py_TPFLAGS_HAVE_GC) == - (base->tp_flags & Py_TPFLAGS_HAVE_GC)) { - /* They agree about gc. */ - COPYSLOT(tp_free); - } - else if ((type->tp_flags & Py_TPFLAGS_HAVE_GC) && - type->tp_free == NULL && - base->tp_free == PyObject_Free) { - /* A bit of magic to plug in the correct default - * tp_free function when a derived class adds gc, - * didn't define tp_free, and the base uses the - * default non-gc tp_free. - */ - type->tp_free = PyObject_GC_Del; - } - /* else they didn't agree about gc, and there isn't something - * obvious to be done -- the type is on its own. - */ - } + /* This won't inherit indirect slots (from tp_as_number etc.) + if type doesn't provide the space. */ + + if (type->tp_as_number != NULL && base->tp_as_number != NULL) { + basebase = base->tp_base; + if (basebase->tp_as_number == NULL) + basebase = NULL; + COPYNUM(nb_add); + COPYNUM(nb_subtract); + COPYNUM(nb_multiply); + COPYNUM(nb_remainder); + COPYNUM(nb_divmod); + COPYNUM(nb_power); + COPYNUM(nb_negative); + COPYNUM(nb_positive); + COPYNUM(nb_absolute); + COPYNUM(nb_bool); + COPYNUM(nb_invert); + COPYNUM(nb_lshift); + COPYNUM(nb_rshift); + COPYNUM(nb_and); + COPYNUM(nb_xor); + COPYNUM(nb_or); + COPYNUM(nb_int); + COPYNUM(nb_float); + COPYNUM(nb_inplace_add); + COPYNUM(nb_inplace_subtract); + COPYNUM(nb_inplace_multiply); + COPYNUM(nb_inplace_remainder); + COPYNUM(nb_inplace_power); + COPYNUM(nb_inplace_lshift); + COPYNUM(nb_inplace_rshift); + COPYNUM(nb_inplace_and); + COPYNUM(nb_inplace_xor); + COPYNUM(nb_inplace_or); + COPYNUM(nb_true_divide); + COPYNUM(nb_floor_divide); + COPYNUM(nb_inplace_true_divide); + COPYNUM(nb_inplace_floor_divide); + COPYNUM(nb_index); + } + + if (type->tp_as_sequence != NULL && base->tp_as_sequence != NULL) { + basebase = base->tp_base; + if (basebase->tp_as_sequence == NULL) + basebase = NULL; + COPYSEQ(sq_length); + COPYSEQ(sq_concat); + COPYSEQ(sq_repeat); + COPYSEQ(sq_item); + COPYSEQ(sq_ass_item); + COPYSEQ(sq_contains); + COPYSEQ(sq_inplace_concat); + COPYSEQ(sq_inplace_repeat); + } + + if (type->tp_as_mapping != NULL && base->tp_as_mapping != NULL) { + basebase = base->tp_base; + if (basebase->tp_as_mapping == NULL) + basebase = NULL; + COPYMAP(mp_length); + COPYMAP(mp_subscript); + COPYMAP(mp_ass_subscript); + } + + if (type->tp_as_buffer != NULL && base->tp_as_buffer != NULL) { + basebase = base->tp_base; + if (basebase->tp_as_buffer == NULL) + basebase = NULL; + COPYBUF(bf_getbuffer); + COPYBUF(bf_releasebuffer); + } + + basebase = base->tp_base; + + COPYSLOT(tp_dealloc); + if (type->tp_getattr == NULL && type->tp_getattro == NULL) { + type->tp_getattr = base->tp_getattr; + type->tp_getattro = base->tp_getattro; + } + if (type->tp_setattr == NULL && type->tp_setattro == NULL) { + type->tp_setattr = base->tp_setattr; + type->tp_setattro = base->tp_setattro; + } + /* tp_reserved is ignored */ + COPYSLOT(tp_repr); + /* tp_hash see tp_richcompare */ + COPYSLOT(tp_call); + COPYSLOT(tp_str); + { + /* Copy comparison-related slots only when + not overriding them anywhere */ + if (type->tp_richcompare == NULL && + type->tp_hash == NULL && + !overrides_hash(type)) + { + type->tp_richcompare = base->tp_richcompare; + type->tp_hash = base->tp_hash; + } + } + { + COPYSLOT(tp_iter); + COPYSLOT(tp_iternext); + } + { + COPYSLOT(tp_descr_get); + COPYSLOT(tp_descr_set); + COPYSLOT(tp_dictoffset); + COPYSLOT(tp_init); + COPYSLOT(tp_alloc); + COPYSLOT(tp_is_gc); + if ((type->tp_flags & Py_TPFLAGS_HAVE_GC) == + (base->tp_flags & Py_TPFLAGS_HAVE_GC)) { + /* They agree about gc. */ + COPYSLOT(tp_free); + } + else if ((type->tp_flags & Py_TPFLAGS_HAVE_GC) && + type->tp_free == NULL && + base->tp_free == PyObject_Free) { + /* A bit of magic to plug in the correct default + * tp_free function when a derived class adds gc, + * didn't define tp_free, and the base uses the + * default non-gc tp_free. + */ + type->tp_free = PyObject_GC_Del; + } + /* else they didn't agree about gc, and there isn't something + * obvious to be done -- the type is on its own. + */ + } } static int add_operators(PyTypeObject *); @@ -3717,273 +3717,273 @@ static int add_operators(PyTypeObject *); int PyType_Ready(PyTypeObject *type) { - PyObject *dict, *bases; - PyTypeObject *base; - Py_ssize_t i, n; + PyObject *dict, *bases; + PyTypeObject *base; + Py_ssize_t i, n; - if (type->tp_flags & Py_TPFLAGS_READY) { - assert(type->tp_dict != NULL); - return 0; - } - assert((type->tp_flags & Py_TPFLAGS_READYING) == 0); + if (type->tp_flags & Py_TPFLAGS_READY) { + assert(type->tp_dict != NULL); + return 0; + } + assert((type->tp_flags & Py_TPFLAGS_READYING) == 0); - type->tp_flags |= Py_TPFLAGS_READYING; + type->tp_flags |= Py_TPFLAGS_READYING; #ifdef Py_TRACE_REFS - /* PyType_Ready is the closest thing we have to a choke point - * for type objects, so is the best place I can think of to try - * to get type objects into the doubly-linked list of all objects. - * Still, not all type objects go thru PyType_Ready. - */ - _Py_AddToAllObjects((PyObject *)type, 0); + /* PyType_Ready is the closest thing we have to a choke point + * for type objects, so is the best place I can think of to try + * to get type objects into the doubly-linked list of all objects. + * Still, not all type objects go thru PyType_Ready. + */ + _Py_AddToAllObjects((PyObject *)type, 0); #endif - /* Initialize tp_base (defaults to BaseObject unless that's us) */ - base = type->tp_base; - if (base == NULL && type != &PyBaseObject_Type) { - base = type->tp_base = &PyBaseObject_Type; - Py_INCREF(base); - } - - /* Now the only way base can still be NULL is if type is - * &PyBaseObject_Type. - */ - - /* Initialize the base class */ - if (base != NULL && base->tp_dict == NULL) { - if (PyType_Ready(base) < 0) - goto error; - } - - /* Initialize ob_type if NULL. This means extensions that want to be - compilable separately on Windows can call PyType_Ready() instead of - initializing the ob_type field of their type objects. */ - /* The test for base != NULL is really unnecessary, since base is only - NULL when type is &PyBaseObject_Type, and we know its ob_type is - not NULL (it's initialized to &PyType_Type). But coverity doesn't - know that. */ - if (Py_TYPE(type) == NULL && base != NULL) - Py_TYPE(type) = Py_TYPE(base); - - /* Initialize tp_bases */ - bases = type->tp_bases; - if (bases == NULL) { - if (base == NULL) - bases = PyTuple_New(0); - else - bases = PyTuple_Pack(1, base); - if (bases == NULL) - goto error; - type->tp_bases = bases; - } - - /* Initialize tp_dict */ - dict = type->tp_dict; - if (dict == NULL) { - dict = PyDict_New(); - if (dict == NULL) - goto error; - type->tp_dict = dict; - } - - /* Add type-specific descriptors to tp_dict */ - if (add_operators(type) < 0) - goto error; - if (type->tp_methods != NULL) { - if (add_methods(type, type->tp_methods) < 0) - goto error; - } - if (type->tp_members != NULL) { - if (add_members(type, type->tp_members) < 0) - goto error; - } - if (type->tp_getset != NULL) { - if (add_getset(type, type->tp_getset) < 0) - goto error; - } - - /* Calculate method resolution order */ - if (mro_internal(type) < 0) { - goto error; - } - - /* Inherit special flags from dominant base */ - if (type->tp_base != NULL) - inherit_special(type, type->tp_base); - - /* Initialize tp_dict properly */ - bases = type->tp_mro; - assert(bases != NULL); - assert(PyTuple_Check(bases)); - n = PyTuple_GET_SIZE(bases); - for (i = 1; i < n; i++) { - PyObject *b = PyTuple_GET_ITEM(bases, i); - if (PyType_Check(b)) - inherit_slots(type, (PyTypeObject *)b); - } - - /* Sanity check for tp_free. */ - if (PyType_IS_GC(type) && (type->tp_flags & Py_TPFLAGS_BASETYPE) && - (type->tp_free == NULL || type->tp_free == PyObject_Del)) { - /* This base class needs to call tp_free, but doesn't have - * one, or its tp_free is for non-gc'ed objects. - */ - PyErr_Format(PyExc_TypeError, "type '%.100s' participates in " - "gc and is a base type but has inappropriate " - "tp_free slot", - type->tp_name); - goto error; - } - - /* if the type dictionary doesn't contain a __doc__, set it from - the tp_doc slot. - */ - if (PyDict_GetItemString(type->tp_dict, "__doc__") == NULL) { - if (type->tp_doc != NULL) { - PyObject *doc = PyUnicode_FromString(type->tp_doc); - if (doc == NULL) - goto error; - PyDict_SetItemString(type->tp_dict, "__doc__", doc); - Py_DECREF(doc); - } else { - PyDict_SetItemString(type->tp_dict, - "__doc__", Py_None); - } - } - - /* Hack for tp_hash and __hash__. - If after all that, tp_hash is still NULL, and __hash__ is not in - tp_dict, set tp_hash to PyObject_HashNotImplemented and - tp_dict['__hash__'] equal to None. - This signals that __hash__ is not inherited. - */ - if (type->tp_hash == NULL) { - if (PyDict_GetItemString(type->tp_dict, "__hash__") == NULL) { - if (PyDict_SetItemString(type->tp_dict, "__hash__", Py_None) < 0) - goto error; - type->tp_hash = PyObject_HashNotImplemented; - } - } - - /* Some more special stuff */ - base = type->tp_base; - if (base != NULL) { - if (type->tp_as_number == NULL) - type->tp_as_number = base->tp_as_number; - if (type->tp_as_sequence == NULL) - type->tp_as_sequence = base->tp_as_sequence; - if (type->tp_as_mapping == NULL) - type->tp_as_mapping = base->tp_as_mapping; - if (type->tp_as_buffer == NULL) - type->tp_as_buffer = base->tp_as_buffer; - } - - /* Link into each base class's list of subclasses */ - bases = type->tp_bases; - n = PyTuple_GET_SIZE(bases); - for (i = 0; i < n; i++) { - PyObject *b = PyTuple_GET_ITEM(bases, i); - if (PyType_Check(b) && - add_subclass((PyTypeObject *)b, type) < 0) - goto error; - } - - /* Warn for a type that implements tp_compare (now known as - tp_reserved) but not tp_richcompare. */ - if (type->tp_reserved && !type->tp_richcompare) { - int error; - char msg[240]; - PyOS_snprintf(msg, sizeof(msg), - "Type %.100s defines tp_reserved (formerly " - "tp_compare) but not tp_richcompare. " - "Comparisons may not behave as intended.", - type->tp_name); - error = PyErr_WarnEx(PyExc_DeprecationWarning, msg, 1); - if (error == -1) - goto error; - } - - /* All done -- set the ready flag */ - assert(type->tp_dict != NULL); - type->tp_flags = - (type->tp_flags & ~Py_TPFLAGS_READYING) | Py_TPFLAGS_READY; - return 0; + /* Initialize tp_base (defaults to BaseObject unless that's us) */ + base = type->tp_base; + if (base == NULL && type != &PyBaseObject_Type) { + base = type->tp_base = &PyBaseObject_Type; + Py_INCREF(base); + } + + /* Now the only way base can still be NULL is if type is + * &PyBaseObject_Type. + */ + + /* Initialize the base class */ + if (base != NULL && base->tp_dict == NULL) { + if (PyType_Ready(base) < 0) + goto error; + } + + /* Initialize ob_type if NULL. This means extensions that want to be + compilable separately on Windows can call PyType_Ready() instead of + initializing the ob_type field of their type objects. */ + /* The test for base != NULL is really unnecessary, since base is only + NULL when type is &PyBaseObject_Type, and we know its ob_type is + not NULL (it's initialized to &PyType_Type). But coverity doesn't + know that. */ + if (Py_TYPE(type) == NULL && base != NULL) + Py_TYPE(type) = Py_TYPE(base); + + /* Initialize tp_bases */ + bases = type->tp_bases; + if (bases == NULL) { + if (base == NULL) + bases = PyTuple_New(0); + else + bases = PyTuple_Pack(1, base); + if (bases == NULL) + goto error; + type->tp_bases = bases; + } + + /* Initialize tp_dict */ + dict = type->tp_dict; + if (dict == NULL) { + dict = PyDict_New(); + if (dict == NULL) + goto error; + type->tp_dict = dict; + } + + /* Add type-specific descriptors to tp_dict */ + if (add_operators(type) < 0) + goto error; + if (type->tp_methods != NULL) { + if (add_methods(type, type->tp_methods) < 0) + goto error; + } + if (type->tp_members != NULL) { + if (add_members(type, type->tp_members) < 0) + goto error; + } + if (type->tp_getset != NULL) { + if (add_getset(type, type->tp_getset) < 0) + goto error; + } + + /* Calculate method resolution order */ + if (mro_internal(type) < 0) { + goto error; + } + + /* Inherit special flags from dominant base */ + if (type->tp_base != NULL) + inherit_special(type, type->tp_base); + + /* Initialize tp_dict properly */ + bases = type->tp_mro; + assert(bases != NULL); + assert(PyTuple_Check(bases)); + n = PyTuple_GET_SIZE(bases); + for (i = 1; i < n; i++) { + PyObject *b = PyTuple_GET_ITEM(bases, i); + if (PyType_Check(b)) + inherit_slots(type, (PyTypeObject *)b); + } + + /* Sanity check for tp_free. */ + if (PyType_IS_GC(type) && (type->tp_flags & Py_TPFLAGS_BASETYPE) && + (type->tp_free == NULL || type->tp_free == PyObject_Del)) { + /* This base class needs to call tp_free, but doesn't have + * one, or its tp_free is for non-gc'ed objects. + */ + PyErr_Format(PyExc_TypeError, "type '%.100s' participates in " + "gc and is a base type but has inappropriate " + "tp_free slot", + type->tp_name); + goto error; + } + + /* if the type dictionary doesn't contain a __doc__, set it from + the tp_doc slot. + */ + if (PyDict_GetItemString(type->tp_dict, "__doc__") == NULL) { + if (type->tp_doc != NULL) { + PyObject *doc = PyUnicode_FromString(type->tp_doc); + if (doc == NULL) + goto error; + PyDict_SetItemString(type->tp_dict, "__doc__", doc); + Py_DECREF(doc); + } else { + PyDict_SetItemString(type->tp_dict, + "__doc__", Py_None); + } + } + + /* Hack for tp_hash and __hash__. + If after all that, tp_hash is still NULL, and __hash__ is not in + tp_dict, set tp_hash to PyObject_HashNotImplemented and + tp_dict['__hash__'] equal to None. + This signals that __hash__ is not inherited. + */ + if (type->tp_hash == NULL) { + if (PyDict_GetItemString(type->tp_dict, "__hash__") == NULL) { + if (PyDict_SetItemString(type->tp_dict, "__hash__", Py_None) < 0) + goto error; + type->tp_hash = PyObject_HashNotImplemented; + } + } + + /* Some more special stuff */ + base = type->tp_base; + if (base != NULL) { + if (type->tp_as_number == NULL) + type->tp_as_number = base->tp_as_number; + if (type->tp_as_sequence == NULL) + type->tp_as_sequence = base->tp_as_sequence; + if (type->tp_as_mapping == NULL) + type->tp_as_mapping = base->tp_as_mapping; + if (type->tp_as_buffer == NULL) + type->tp_as_buffer = base->tp_as_buffer; + } + + /* Link into each base class's list of subclasses */ + bases = type->tp_bases; + n = PyTuple_GET_SIZE(bases); + for (i = 0; i < n; i++) { + PyObject *b = PyTuple_GET_ITEM(bases, i); + if (PyType_Check(b) && + add_subclass((PyTypeObject *)b, type) < 0) + goto error; + } + + /* Warn for a type that implements tp_compare (now known as + tp_reserved) but not tp_richcompare. */ + if (type->tp_reserved && !type->tp_richcompare) { + int error; + char msg[240]; + PyOS_snprintf(msg, sizeof(msg), + "Type %.100s defines tp_reserved (formerly " + "tp_compare) but not tp_richcompare. " + "Comparisons may not behave as intended.", + type->tp_name); + error = PyErr_WarnEx(PyExc_DeprecationWarning, msg, 1); + if (error == -1) + goto error; + } + + /* All done -- set the ready flag */ + assert(type->tp_dict != NULL); + type->tp_flags = + (type->tp_flags & ~Py_TPFLAGS_READYING) | Py_TPFLAGS_READY; + return 0; error: - type->tp_flags &= ~Py_TPFLAGS_READYING; - return -1; + type->tp_flags &= ~Py_TPFLAGS_READYING; + return -1; } static int add_subclass(PyTypeObject *base, PyTypeObject *type) { - Py_ssize_t i; - int result; - PyObject *list, *ref, *newobj; - - list = base->tp_subclasses; - if (list == NULL) { - base->tp_subclasses = list = PyList_New(0); - if (list == NULL) - return -1; - } - assert(PyList_Check(list)); - newobj = PyWeakref_NewRef((PyObject *)type, NULL); - i = PyList_GET_SIZE(list); - while (--i >= 0) { - ref = PyList_GET_ITEM(list, i); - assert(PyWeakref_CheckRef(ref)); - if (PyWeakref_GET_OBJECT(ref) == Py_None) - return PyList_SetItem(list, i, newobj); - } - result = PyList_Append(list, newobj); - Py_DECREF(newobj); - return result; + Py_ssize_t i; + int result; + PyObject *list, *ref, *newobj; + + list = base->tp_subclasses; + if (list == NULL) { + base->tp_subclasses = list = PyList_New(0); + if (list == NULL) + return -1; + } + assert(PyList_Check(list)); + newobj = PyWeakref_NewRef((PyObject *)type, NULL); + i = PyList_GET_SIZE(list); + while (--i >= 0) { + ref = PyList_GET_ITEM(list, i); + assert(PyWeakref_CheckRef(ref)); + if (PyWeakref_GET_OBJECT(ref) == Py_None) + return PyList_SetItem(list, i, newobj); + } + result = PyList_Append(list, newobj); + Py_DECREF(newobj); + return result; } static void remove_subclass(PyTypeObject *base, PyTypeObject *type) { - Py_ssize_t i; - PyObject *list, *ref; - - list = base->tp_subclasses; - if (list == NULL) { - return; - } - assert(PyList_Check(list)); - i = PyList_GET_SIZE(list); - while (--i >= 0) { - ref = PyList_GET_ITEM(list, i); - assert(PyWeakref_CheckRef(ref)); - if (PyWeakref_GET_OBJECT(ref) == (PyObject*)type) { - /* this can't fail, right? */ - PySequence_DelItem(list, i); - return; - } - } + Py_ssize_t i; + PyObject *list, *ref; + + list = base->tp_subclasses; + if (list == NULL) { + return; + } + assert(PyList_Check(list)); + i = PyList_GET_SIZE(list); + while (--i >= 0) { + ref = PyList_GET_ITEM(list, i); + assert(PyWeakref_CheckRef(ref)); + if (PyWeakref_GET_OBJECT(ref) == (PyObject*)type) { + /* this can't fail, right? */ + PySequence_DelItem(list, i); + return; + } + } } static int check_num_args(PyObject *ob, int n) { - if (!PyTuple_CheckExact(ob)) { - PyErr_SetString(PyExc_SystemError, - "PyArg_UnpackTuple() argument list is not a tuple"); - return 0; - } - if (n == PyTuple_GET_SIZE(ob)) - return 1; - PyErr_Format( - PyExc_TypeError, - "expected %d arguments, got %zd", n, PyTuple_GET_SIZE(ob)); - return 0; + if (!PyTuple_CheckExact(ob)) { + PyErr_SetString(PyExc_SystemError, + "PyArg_UnpackTuple() argument list is not a tuple"); + return 0; + } + if (n == PyTuple_GET_SIZE(ob)) + return 1; + PyErr_Format( + PyExc_TypeError, + "expected %d arguments, got %zd", n, PyTuple_GET_SIZE(ob)); + return 0; } /* Generic wrappers for overloadable 'operators' such as __getitem__ */ /* There's a wrapper *function* for each distinct function typedef used - for type object slots (e.g. binaryfunc, ternaryfunc, etc.). There's a + for type object slots (e.g. binaryfunc, ternaryfunc, etc.). There's a wrapper *table* for each distinct operation (e.g. __len__, __add__). Most tables have only one entry; the tables for binary operators have two entries, one regular and one with reversed arguments. */ @@ -3991,253 +3991,253 @@ check_num_args(PyObject *ob, int n) static PyObject * wrap_lenfunc(PyObject *self, PyObject *args, void *wrapped) { - lenfunc func = (lenfunc)wrapped; - Py_ssize_t res; + lenfunc func = (lenfunc)wrapped; + Py_ssize_t res; - if (!check_num_args(args, 0)) - return NULL; - res = (*func)(self); - if (res == -1 && PyErr_Occurred()) - return NULL; - return PyLong_FromLong((long)res); + if (!check_num_args(args, 0)) + return NULL; + res = (*func)(self); + if (res == -1 && PyErr_Occurred()) + return NULL; + return PyLong_FromLong((long)res); } static PyObject * wrap_inquirypred(PyObject *self, PyObject *args, void *wrapped) { - inquiry func = (inquiry)wrapped; - int res; + inquiry func = (inquiry)wrapped; + int res; - if (!check_num_args(args, 0)) - return NULL; - res = (*func)(self); - if (res == -1 && PyErr_Occurred()) - return NULL; - return PyBool_FromLong((long)res); + if (!check_num_args(args, 0)) + return NULL; + res = (*func)(self); + if (res == -1 && PyErr_Occurred()) + return NULL; + return PyBool_FromLong((long)res); } static PyObject * wrap_binaryfunc(PyObject *self, PyObject *args, void *wrapped) { - binaryfunc func = (binaryfunc)wrapped; - PyObject *other; + binaryfunc func = (binaryfunc)wrapped; + PyObject *other; - if (!check_num_args(args, 1)) - return NULL; - other = PyTuple_GET_ITEM(args, 0); - return (*func)(self, other); + if (!check_num_args(args, 1)) + return NULL; + other = PyTuple_GET_ITEM(args, 0); + return (*func)(self, other); } static PyObject * wrap_binaryfunc_l(PyObject *self, PyObject *args, void *wrapped) { - binaryfunc func = (binaryfunc)wrapped; - PyObject *other; + binaryfunc func = (binaryfunc)wrapped; + PyObject *other; - if (!check_num_args(args, 1)) - return NULL; - other = PyTuple_GET_ITEM(args, 0); - return (*func)(self, other); + if (!check_num_args(args, 1)) + return NULL; + other = PyTuple_GET_ITEM(args, 0); + return (*func)(self, other); } static PyObject * wrap_binaryfunc_r(PyObject *self, PyObject *args, void *wrapped) { - binaryfunc func = (binaryfunc)wrapped; - PyObject *other; + binaryfunc func = (binaryfunc)wrapped; + PyObject *other; - if (!check_num_args(args, 1)) - return NULL; - other = PyTuple_GET_ITEM(args, 0); - if (!PyType_IsSubtype(Py_TYPE(other), Py_TYPE(self))) { - Py_INCREF(Py_NotImplemented); - return Py_NotImplemented; - } - return (*func)(other, self); + if (!check_num_args(args, 1)) + return NULL; + other = PyTuple_GET_ITEM(args, 0); + if (!PyType_IsSubtype(Py_TYPE(other), Py_TYPE(self))) { + Py_INCREF(Py_NotImplemented); + return Py_NotImplemented; + } + return (*func)(other, self); } static PyObject * wrap_ternaryfunc(PyObject *self, PyObject *args, void *wrapped) { - ternaryfunc func = (ternaryfunc)wrapped; - PyObject *other; - PyObject *third = Py_None; + ternaryfunc func = (ternaryfunc)wrapped; + PyObject *other; + PyObject *third = Py_None; - /* Note: This wrapper only works for __pow__() */ + /* Note: This wrapper only works for __pow__() */ - if (!PyArg_UnpackTuple(args, "", 1, 2, &other, &third)) - return NULL; - return (*func)(self, other, third); + if (!PyArg_UnpackTuple(args, "", 1, 2, &other, &third)) + return NULL; + return (*func)(self, other, third); } static PyObject * wrap_ternaryfunc_r(PyObject *self, PyObject *args, void *wrapped) { - ternaryfunc func = (ternaryfunc)wrapped; - PyObject *other; - PyObject *third = Py_None; + ternaryfunc func = (ternaryfunc)wrapped; + PyObject *other; + PyObject *third = Py_None; - /* Note: This wrapper only works for __pow__() */ + /* Note: This wrapper only works for __pow__() */ - if (!PyArg_UnpackTuple(args, "", 1, 2, &other, &third)) - return NULL; - return (*func)(other, self, third); + if (!PyArg_UnpackTuple(args, "", 1, 2, &other, &third)) + return NULL; + return (*func)(other, self, third); } static PyObject * wrap_unaryfunc(PyObject *self, PyObject *args, void *wrapped) { - unaryfunc func = (unaryfunc)wrapped; + unaryfunc func = (unaryfunc)wrapped; - if (!check_num_args(args, 0)) - return NULL; - return (*func)(self); + if (!check_num_args(args, 0)) + return NULL; + return (*func)(self); } static PyObject * wrap_indexargfunc(PyObject *self, PyObject *args, void *wrapped) { - ssizeargfunc func = (ssizeargfunc)wrapped; - PyObject* o; - Py_ssize_t i; + ssizeargfunc func = (ssizeargfunc)wrapped; + PyObject* o; + Py_ssize_t i; - if (!PyArg_UnpackTuple(args, "", 1, 1, &o)) - return NULL; - i = PyNumber_AsSsize_t(o, PyExc_OverflowError); - if (i == -1 && PyErr_Occurred()) - return NULL; - return (*func)(self, i); + if (!PyArg_UnpackTuple(args, "", 1, 1, &o)) + return NULL; + i = PyNumber_AsSsize_t(o, PyExc_OverflowError); + if (i == -1 && PyErr_Occurred()) + return NULL; + return (*func)(self, i); } static Py_ssize_t getindex(PyObject *self, PyObject *arg) { - Py_ssize_t i; - - i = PyNumber_AsSsize_t(arg, PyExc_OverflowError); - if (i == -1 && PyErr_Occurred()) - return -1; - if (i < 0) { - PySequenceMethods *sq = Py_TYPE(self)->tp_as_sequence; - if (sq && sq->sq_length) { - Py_ssize_t n = (*sq->sq_length)(self); - if (n < 0) - return -1; - i += n; - } - } - return i; + Py_ssize_t i; + + i = PyNumber_AsSsize_t(arg, PyExc_OverflowError); + if (i == -1 && PyErr_Occurred()) + return -1; + if (i < 0) { + PySequenceMethods *sq = Py_TYPE(self)->tp_as_sequence; + if (sq && sq->sq_length) { + Py_ssize_t n = (*sq->sq_length)(self); + if (n < 0) + return -1; + i += n; + } + } + return i; } static PyObject * wrap_sq_item(PyObject *self, PyObject *args, void *wrapped) { - ssizeargfunc func = (ssizeargfunc)wrapped; - PyObject *arg; - Py_ssize_t i; + ssizeargfunc func = (ssizeargfunc)wrapped; + PyObject *arg; + Py_ssize_t i; - if (PyTuple_GET_SIZE(args) == 1) { - arg = PyTuple_GET_ITEM(args, 0); - i = getindex(self, arg); - if (i == -1 && PyErr_Occurred()) - return NULL; - return (*func)(self, i); - } - check_num_args(args, 1); - assert(PyErr_Occurred()); - return NULL; + if (PyTuple_GET_SIZE(args) == 1) { + arg = PyTuple_GET_ITEM(args, 0); + i = getindex(self, arg); + if (i == -1 && PyErr_Occurred()) + return NULL; + return (*func)(self, i); + } + check_num_args(args, 1); + assert(PyErr_Occurred()); + return NULL; } static PyObject * wrap_sq_setitem(PyObject *self, PyObject *args, void *wrapped) { - ssizeobjargproc func = (ssizeobjargproc)wrapped; - Py_ssize_t i; - int res; - PyObject *arg, *value; + ssizeobjargproc func = (ssizeobjargproc)wrapped; + Py_ssize_t i; + int res; + PyObject *arg, *value; - if (!PyArg_UnpackTuple(args, "", 2, 2, &arg, &value)) - return NULL; - i = getindex(self, arg); - if (i == -1 && PyErr_Occurred()) - return NULL; - res = (*func)(self, i, value); - if (res == -1 && PyErr_Occurred()) - return NULL; - Py_INCREF(Py_None); - return Py_None; + if (!PyArg_UnpackTuple(args, "", 2, 2, &arg, &value)) + return NULL; + i = getindex(self, arg); + if (i == -1 && PyErr_Occurred()) + return NULL; + res = (*func)(self, i, value); + if (res == -1 && PyErr_Occurred()) + return NULL; + Py_INCREF(Py_None); + return Py_None; } static PyObject * wrap_sq_delitem(PyObject *self, PyObject *args, void *wrapped) { - ssizeobjargproc func = (ssizeobjargproc)wrapped; - Py_ssize_t i; - int res; - PyObject *arg; + ssizeobjargproc func = (ssizeobjargproc)wrapped; + Py_ssize_t i; + int res; + PyObject *arg; - if (!check_num_args(args, 1)) - return NULL; - arg = PyTuple_GET_ITEM(args, 0); - i = getindex(self, arg); - if (i == -1 && PyErr_Occurred()) - return NULL; - res = (*func)(self, i, NULL); - if (res == -1 && PyErr_Occurred()) - return NULL; - Py_INCREF(Py_None); - return Py_None; + if (!check_num_args(args, 1)) + return NULL; + arg = PyTuple_GET_ITEM(args, 0); + i = getindex(self, arg); + if (i == -1 && PyErr_Occurred()) + return NULL; + res = (*func)(self, i, NULL); + if (res == -1 && PyErr_Occurred()) + return NULL; + Py_INCREF(Py_None); + return Py_None; } /* XXX objobjproc is a misnomer; should be objargpred */ static PyObject * wrap_objobjproc(PyObject *self, PyObject *args, void *wrapped) { - objobjproc func = (objobjproc)wrapped; - int res; - PyObject *value; + objobjproc func = (objobjproc)wrapped; + int res; + PyObject *value; - if (!check_num_args(args, 1)) - return NULL; - value = PyTuple_GET_ITEM(args, 0); - res = (*func)(self, value); - if (res == -1 && PyErr_Occurred()) - return NULL; - else - return PyBool_FromLong(res); + if (!check_num_args(args, 1)) + return NULL; + value = PyTuple_GET_ITEM(args, 0); + res = (*func)(self, value); + if (res == -1 && PyErr_Occurred()) + return NULL; + else + return PyBool_FromLong(res); } static PyObject * wrap_objobjargproc(PyObject *self, PyObject *args, void *wrapped) { - objobjargproc func = (objobjargproc)wrapped; - int res; - PyObject *key, *value; + objobjargproc func = (objobjargproc)wrapped; + int res; + PyObject *key, *value; - if (!PyArg_UnpackTuple(args, "", 2, 2, &key, &value)) - return NULL; - res = (*func)(self, key, value); - if (res == -1 && PyErr_Occurred()) - return NULL; - Py_INCREF(Py_None); - return Py_None; + if (!PyArg_UnpackTuple(args, "", 2, 2, &key, &value)) + return NULL; + res = (*func)(self, key, value); + if (res == -1 && PyErr_Occurred()) + return NULL; + Py_INCREF(Py_None); + return Py_None; } static PyObject * wrap_delitem(PyObject *self, PyObject *args, void *wrapped) { - objobjargproc func = (objobjargproc)wrapped; - int res; - PyObject *key; + objobjargproc func = (objobjargproc)wrapped; + int res; + PyObject *key; - if (!check_num_args(args, 1)) - return NULL; - key = PyTuple_GET_ITEM(args, 0); - res = (*func)(self, key, NULL); - if (res == -1 && PyErr_Occurred()) - return NULL; - Py_INCREF(Py_None); - return Py_None; + if (!check_num_args(args, 1)) + return NULL; + key = PyTuple_GET_ITEM(args, 0); + res = (*func)(self, key, NULL); + if (res == -1 && PyErr_Occurred()) + return NULL; + Py_INCREF(Py_None); + return Py_None; } /* Helper to check for object.__setattr__ or __delattr__ applied to a type. @@ -4245,90 +4245,90 @@ wrap_delitem(PyObject *self, PyObject *args, void *wrapped) static int hackcheck(PyObject *self, setattrofunc func, char *what) { - PyTypeObject *type = Py_TYPE(self); - while (type && type->tp_flags & Py_TPFLAGS_HEAPTYPE) - type = type->tp_base; - /* If type is NULL now, this is a really weird type. - In the spirit of backwards compatibility (?), just shut up. */ - if (type && type->tp_setattro != func) { - PyErr_Format(PyExc_TypeError, - "can't apply this %s to %s object", - what, - type->tp_name); - return 0; - } - return 1; + PyTypeObject *type = Py_TYPE(self); + while (type && type->tp_flags & Py_TPFLAGS_HEAPTYPE) + type = type->tp_base; + /* If type is NULL now, this is a really weird type. + In the spirit of backwards compatibility (?), just shut up. */ + if (type && type->tp_setattro != func) { + PyErr_Format(PyExc_TypeError, + "can't apply this %s to %s object", + what, + type->tp_name); + return 0; + } + return 1; } static PyObject * wrap_setattr(PyObject *self, PyObject *args, void *wrapped) { - setattrofunc func = (setattrofunc)wrapped; - int res; - PyObject *name, *value; + setattrofunc func = (setattrofunc)wrapped; + int res; + PyObject *name, *value; - if (!PyArg_UnpackTuple(args, "", 2, 2, &name, &value)) - return NULL; - if (!hackcheck(self, func, "__setattr__")) - return NULL; - res = (*func)(self, name, value); - if (res < 0) - return NULL; - Py_INCREF(Py_None); - return Py_None; + if (!PyArg_UnpackTuple(args, "", 2, 2, &name, &value)) + return NULL; + if (!hackcheck(self, func, "__setattr__")) + return NULL; + res = (*func)(self, name, value); + if (res < 0) + return NULL; + Py_INCREF(Py_None); + return Py_None; } static PyObject * wrap_delattr(PyObject *self, PyObject *args, void *wrapped) { - setattrofunc func = (setattrofunc)wrapped; - int res; - PyObject *name; + setattrofunc func = (setattrofunc)wrapped; + int res; + PyObject *name; - if (!check_num_args(args, 1)) - return NULL; - name = PyTuple_GET_ITEM(args, 0); - if (!hackcheck(self, func, "__delattr__")) - return NULL; - res = (*func)(self, name, NULL); - if (res < 0) - return NULL; - Py_INCREF(Py_None); - return Py_None; + if (!check_num_args(args, 1)) + return NULL; + name = PyTuple_GET_ITEM(args, 0); + if (!hackcheck(self, func, "__delattr__")) + return NULL; + res = (*func)(self, name, NULL); + if (res < 0) + return NULL; + Py_INCREF(Py_None); + return Py_None; } static PyObject * wrap_hashfunc(PyObject *self, PyObject *args, void *wrapped) { - hashfunc func = (hashfunc)wrapped; - long res; + hashfunc func = (hashfunc)wrapped; + long res; - if (!check_num_args(args, 0)) - return NULL; - res = (*func)(self); - if (res == -1 && PyErr_Occurred()) - return NULL; - return PyLong_FromLong(res); + if (!check_num_args(args, 0)) + return NULL; + res = (*func)(self); + if (res == -1 && PyErr_Occurred()) + return NULL; + return PyLong_FromLong(res); } static PyObject * wrap_call(PyObject *self, PyObject *args, void *wrapped, PyObject *kwds) { - ternaryfunc func = (ternaryfunc)wrapped; + ternaryfunc func = (ternaryfunc)wrapped; - return (*func)(self, args, kwds); + return (*func)(self, args, kwds); } static PyObject * wrap_richcmpfunc(PyObject *self, PyObject *args, void *wrapped, int op) { - richcmpfunc func = (richcmpfunc)wrapped; - PyObject *other; + richcmpfunc func = (richcmpfunc)wrapped; + PyObject *other; - if (!check_num_args(args, 1)) - return NULL; - other = PyTuple_GET_ITEM(args, 0); - return (*func)(self, other, op); + if (!check_num_args(args, 1)) + return NULL; + other = PyTuple_GET_ITEM(args, 0); + return (*func)(self, other, op); } #undef RICHCMP_WRAPPER @@ -4336,7 +4336,7 @@ wrap_richcmpfunc(PyObject *self, PyObject *args, void *wrapped, int op) static PyObject * \ richcmp_##NAME(PyObject *self, PyObject *args, void *wrapped) \ { \ - return wrap_richcmpfunc(self, args, wrapped, OP); \ + return wrap_richcmpfunc(self, args, wrapped, OP); \ } RICHCMP_WRAPPER(lt, Py_LT) @@ -4349,164 +4349,164 @@ RICHCMP_WRAPPER(ge, Py_GE) static PyObject * wrap_next(PyObject *self, PyObject *args, void *wrapped) { - unaryfunc func = (unaryfunc)wrapped; - PyObject *res; + unaryfunc func = (unaryfunc)wrapped; + PyObject *res; - if (!check_num_args(args, 0)) - return NULL; - res = (*func)(self); - if (res == NULL && !PyErr_Occurred()) - PyErr_SetNone(PyExc_StopIteration); - return res; + if (!check_num_args(args, 0)) + return NULL; + res = (*func)(self); + if (res == NULL && !PyErr_Occurred()) + PyErr_SetNone(PyExc_StopIteration); + return res; } static PyObject * wrap_descr_get(PyObject *self, PyObject *args, void *wrapped) { - descrgetfunc func = (descrgetfunc)wrapped; - PyObject *obj; - PyObject *type = NULL; + descrgetfunc func = (descrgetfunc)wrapped; + PyObject *obj; + PyObject *type = NULL; - if (!PyArg_UnpackTuple(args, "", 1, 2, &obj, &type)) - return NULL; - if (obj == Py_None) - obj = NULL; - if (type == Py_None) - type = NULL; - if (type == NULL &&obj == NULL) { - PyErr_SetString(PyExc_TypeError, - "__get__(None, None) is invalid"); - return NULL; - } - return (*func)(self, obj, type); + if (!PyArg_UnpackTuple(args, "", 1, 2, &obj, &type)) + return NULL; + if (obj == Py_None) + obj = NULL; + if (type == Py_None) + type = NULL; + if (type == NULL &&obj == NULL) { + PyErr_SetString(PyExc_TypeError, + "__get__(None, None) is invalid"); + return NULL; + } + return (*func)(self, obj, type); } static PyObject * wrap_descr_set(PyObject *self, PyObject *args, void *wrapped) { - descrsetfunc func = (descrsetfunc)wrapped; - PyObject *obj, *value; - int ret; + descrsetfunc func = (descrsetfunc)wrapped; + PyObject *obj, *value; + int ret; - if (!PyArg_UnpackTuple(args, "", 2, 2, &obj, &value)) - return NULL; - ret = (*func)(self, obj, value); - if (ret < 0) - return NULL; - Py_INCREF(Py_None); - return Py_None; + if (!PyArg_UnpackTuple(args, "", 2, 2, &obj, &value)) + return NULL; + ret = (*func)(self, obj, value); + if (ret < 0) + return NULL; + Py_INCREF(Py_None); + return Py_None; } static PyObject * wrap_descr_delete(PyObject *self, PyObject *args, void *wrapped) { - descrsetfunc func = (descrsetfunc)wrapped; - PyObject *obj; - int ret; + descrsetfunc func = (descrsetfunc)wrapped; + PyObject *obj; + int ret; - if (!check_num_args(args, 1)) - return NULL; - obj = PyTuple_GET_ITEM(args, 0); - ret = (*func)(self, obj, NULL); - if (ret < 0) - return NULL; - Py_INCREF(Py_None); - return Py_None; + if (!check_num_args(args, 1)) + return NULL; + obj = PyTuple_GET_ITEM(args, 0); + ret = (*func)(self, obj, NULL); + if (ret < 0) + return NULL; + Py_INCREF(Py_None); + return Py_None; } static PyObject * wrap_init(PyObject *self, PyObject *args, void *wrapped, PyObject *kwds) { - initproc func = (initproc)wrapped; + initproc func = (initproc)wrapped; - if (func(self, args, kwds) < 0) - return NULL; - Py_INCREF(Py_None); - return Py_None; + if (func(self, args, kwds) < 0) + return NULL; + Py_INCREF(Py_None); + return Py_None; } static PyObject * tp_new_wrapper(PyObject *self, PyObject *args, PyObject *kwds) { - PyTypeObject *type, *subtype, *staticbase; - PyObject *arg0, *res; - - if (self == NULL || !PyType_Check(self)) - Py_FatalError("__new__() called with non-type 'self'"); - type = (PyTypeObject *)self; - if (!PyTuple_Check(args) || PyTuple_GET_SIZE(args) < 1) { - PyErr_Format(PyExc_TypeError, - "%s.__new__(): not enough arguments", - type->tp_name); - return NULL; - } - arg0 = PyTuple_GET_ITEM(args, 0); - if (!PyType_Check(arg0)) { - PyErr_Format(PyExc_TypeError, - "%s.__new__(X): X is not a type object (%s)", - type->tp_name, - Py_TYPE(arg0)->tp_name); - return NULL; - } - subtype = (PyTypeObject *)arg0; - if (!PyType_IsSubtype(subtype, type)) { - PyErr_Format(PyExc_TypeError, - "%s.__new__(%s): %s is not a subtype of %s", - type->tp_name, - subtype->tp_name, - subtype->tp_name, - type->tp_name); - return NULL; - } - - /* Check that the use doesn't do something silly and unsafe like - object.__new__(dict). To do this, we check that the - most derived base that's not a heap type is this type. */ - staticbase = subtype; - while (staticbase && (staticbase->tp_flags & Py_TPFLAGS_HEAPTYPE)) - staticbase = staticbase->tp_base; - /* If staticbase is NULL now, it is a really weird type. - In the spirit of backwards compatibility (?), just shut up. */ - if (staticbase && staticbase->tp_new != type->tp_new) { - PyErr_Format(PyExc_TypeError, - "%s.__new__(%s) is not safe, use %s.__new__()", - type->tp_name, - subtype->tp_name, - staticbase == NULL ? "?" : staticbase->tp_name); - return NULL; - } - - args = PyTuple_GetSlice(args, 1, PyTuple_GET_SIZE(args)); - if (args == NULL) - return NULL; - res = type->tp_new(subtype, args, kwds); - Py_DECREF(args); - return res; + PyTypeObject *type, *subtype, *staticbase; + PyObject *arg0, *res; + + if (self == NULL || !PyType_Check(self)) + Py_FatalError("__new__() called with non-type 'self'"); + type = (PyTypeObject *)self; + if (!PyTuple_Check(args) || PyTuple_GET_SIZE(args) < 1) { + PyErr_Format(PyExc_TypeError, + "%s.__new__(): not enough arguments", + type->tp_name); + return NULL; + } + arg0 = PyTuple_GET_ITEM(args, 0); + if (!PyType_Check(arg0)) { + PyErr_Format(PyExc_TypeError, + "%s.__new__(X): X is not a type object (%s)", + type->tp_name, + Py_TYPE(arg0)->tp_name); + return NULL; + } + subtype = (PyTypeObject *)arg0; + if (!PyType_IsSubtype(subtype, type)) { + PyErr_Format(PyExc_TypeError, + "%s.__new__(%s): %s is not a subtype of %s", + type->tp_name, + subtype->tp_name, + subtype->tp_name, + type->tp_name); + return NULL; + } + + /* Check that the use doesn't do something silly and unsafe like + object.__new__(dict). To do this, we check that the + most derived base that's not a heap type is this type. */ + staticbase = subtype; + while (staticbase && (staticbase->tp_flags & Py_TPFLAGS_HEAPTYPE)) + staticbase = staticbase->tp_base; + /* If staticbase is NULL now, it is a really weird type. + In the spirit of backwards compatibility (?), just shut up. */ + if (staticbase && staticbase->tp_new != type->tp_new) { + PyErr_Format(PyExc_TypeError, + "%s.__new__(%s) is not safe, use %s.__new__()", + type->tp_name, + subtype->tp_name, + staticbase == NULL ? "?" : staticbase->tp_name); + return NULL; + } + + args = PyTuple_GetSlice(args, 1, PyTuple_GET_SIZE(args)); + if (args == NULL) + return NULL; + res = type->tp_new(subtype, args, kwds); + Py_DECREF(args); + return res; } static struct PyMethodDef tp_new_methoddef[] = { - {"__new__", (PyCFunction)tp_new_wrapper, METH_VARARGS|METH_KEYWORDS, - PyDoc_STR("T.__new__(S, ...) -> " - "a new object with type S, a subtype of T")}, - {0} + {"__new__", (PyCFunction)tp_new_wrapper, METH_VARARGS|METH_KEYWORDS, + PyDoc_STR("T.__new__(S, ...) -> " + "a new object with type S, a subtype of T")}, + {0} }; static int add_tp_new_wrapper(PyTypeObject *type) { - PyObject *func; + PyObject *func; - if (PyDict_GetItemString(type->tp_dict, "__new__") != NULL) - return 0; - func = PyCFunction_New(tp_new_methoddef, (PyObject *)type); - if (func == NULL) - return -1; - if (PyDict_SetItemString(type->tp_dict, "__new__", func)) { - Py_DECREF(func); - return -1; - } - Py_DECREF(func); - return 0; + if (PyDict_GetItemString(type->tp_dict, "__new__") != NULL) + return 0; + func = PyCFunction_New(tp_new_methoddef, (PyObject *)type); + if (func == NULL) + return -1; + if (PyDict_SetItemString(type->tp_dict, "__new__", func)) { + Py_DECREF(func); + return -1; + } + Py_DECREF(func); + return 0; } /* Slot wrappers that call the corresponding __foo__ slot. See comments @@ -4516,16 +4516,16 @@ add_tp_new_wrapper(PyTypeObject *type) static PyObject * \ FUNCNAME(PyObject *self) \ { \ - static PyObject *cache_str; \ - return call_method(self, OPSTR, &cache_str, "()"); \ + static PyObject *cache_str; \ + return call_method(self, OPSTR, &cache_str, "()"); \ } #define SLOT1(FUNCNAME, OPSTR, ARG1TYPE, ARGCODES) \ static PyObject * \ FUNCNAME(PyObject *self, ARG1TYPE arg1) \ { \ - static PyObject *cache_str; \ - return call_method(self, OPSTR, &cache_str, "(" ARGCODES ")", arg1); \ + static PyObject *cache_str; \ + return call_method(self, OPSTR, &cache_str, "(" ARGCODES ")", arg1); \ } /* Boolean helper for SLOT1BINFULL(). @@ -4533,33 +4533,33 @@ FUNCNAME(PyObject *self, ARG1TYPE arg1) \ static int method_is_overloaded(PyObject *left, PyObject *right, char *name) { - PyObject *a, *b; - int ok; + PyObject *a, *b; + int ok; - b = PyObject_GetAttrString((PyObject *)(Py_TYPE(right)), name); - if (b == NULL) { - PyErr_Clear(); - /* If right doesn't have it, it's not overloaded */ - return 0; - } + b = PyObject_GetAttrString((PyObject *)(Py_TYPE(right)), name); + if (b == NULL) { + PyErr_Clear(); + /* If right doesn't have it, it's not overloaded */ + return 0; + } - a = PyObject_GetAttrString((PyObject *)(Py_TYPE(left)), name); - if (a == NULL) { - PyErr_Clear(); - Py_DECREF(b); - /* If right has it but left doesn't, it's overloaded */ - return 1; - } + a = PyObject_GetAttrString((PyObject *)(Py_TYPE(left)), name); + if (a == NULL) { + PyErr_Clear(); + Py_DECREF(b); + /* If right has it but left doesn't, it's overloaded */ + return 1; + } - ok = PyObject_RichCompareBool(a, b, Py_NE); - Py_DECREF(a); - Py_DECREF(b); - if (ok < 0) { - PyErr_Clear(); - return 0; - } + ok = PyObject_RichCompareBool(a, b, Py_NE); + Py_DECREF(a); + Py_DECREF(b); + if (ok < 0) { + PyErr_Clear(); + return 0; + } - return ok; + return ok; } @@ -4567,68 +4567,68 @@ method_is_overloaded(PyObject *left, PyObject *right, char *name) static PyObject * \ FUNCNAME(PyObject *self, PyObject *other) \ { \ - static PyObject *cache_str, *rcache_str; \ - int do_other = Py_TYPE(self) != Py_TYPE(other) && \ - Py_TYPE(other)->tp_as_number != NULL && \ - Py_TYPE(other)->tp_as_number->SLOTNAME == TESTFUNC; \ - if (Py_TYPE(self)->tp_as_number != NULL && \ - Py_TYPE(self)->tp_as_number->SLOTNAME == TESTFUNC) { \ - PyObject *r; \ - if (do_other && \ - PyType_IsSubtype(Py_TYPE(other), Py_TYPE(self)) && \ - method_is_overloaded(self, other, ROPSTR)) { \ - r = call_maybe( \ - other, ROPSTR, &rcache_str, "(O)", self); \ - if (r != Py_NotImplemented) \ - return r; \ - Py_DECREF(r); \ - do_other = 0; \ - } \ - r = call_maybe( \ - self, OPSTR, &cache_str, "(O)", other); \ - if (r != Py_NotImplemented || \ - Py_TYPE(other) == Py_TYPE(self)) \ - return r; \ - Py_DECREF(r); \ - } \ - if (do_other) { \ - return call_maybe( \ - other, ROPSTR, &rcache_str, "(O)", self); \ - } \ - Py_INCREF(Py_NotImplemented); \ - return Py_NotImplemented; \ + static PyObject *cache_str, *rcache_str; \ + int do_other = Py_TYPE(self) != Py_TYPE(other) && \ + Py_TYPE(other)->tp_as_number != NULL && \ + Py_TYPE(other)->tp_as_number->SLOTNAME == TESTFUNC; \ + if (Py_TYPE(self)->tp_as_number != NULL && \ + Py_TYPE(self)->tp_as_number->SLOTNAME == TESTFUNC) { \ + PyObject *r; \ + if (do_other && \ + PyType_IsSubtype(Py_TYPE(other), Py_TYPE(self)) && \ + method_is_overloaded(self, other, ROPSTR)) { \ + r = call_maybe( \ + other, ROPSTR, &rcache_str, "(O)", self); \ + if (r != Py_NotImplemented) \ + return r; \ + Py_DECREF(r); \ + do_other = 0; \ + } \ + r = call_maybe( \ + self, OPSTR, &cache_str, "(O)", other); \ + if (r != Py_NotImplemented || \ + Py_TYPE(other) == Py_TYPE(self)) \ + return r; \ + Py_DECREF(r); \ + } \ + if (do_other) { \ + return call_maybe( \ + other, ROPSTR, &rcache_str, "(O)", self); \ + } \ + Py_INCREF(Py_NotImplemented); \ + return Py_NotImplemented; \ } #define SLOT1BIN(FUNCNAME, SLOTNAME, OPSTR, ROPSTR) \ - SLOT1BINFULL(FUNCNAME, FUNCNAME, SLOTNAME, OPSTR, ROPSTR) + SLOT1BINFULL(FUNCNAME, FUNCNAME, SLOTNAME, OPSTR, ROPSTR) #define SLOT2(FUNCNAME, OPSTR, ARG1TYPE, ARG2TYPE, ARGCODES) \ static PyObject * \ FUNCNAME(PyObject *self, ARG1TYPE arg1, ARG2TYPE arg2) \ { \ - static PyObject *cache_str; \ - return call_method(self, OPSTR, &cache_str, \ - "(" ARGCODES ")", arg1, arg2); \ + static PyObject *cache_str; \ + return call_method(self, OPSTR, &cache_str, \ + "(" ARGCODES ")", arg1, arg2); \ } static Py_ssize_t slot_sq_length(PyObject *self) { - static PyObject *len_str; - PyObject *res = call_method(self, "__len__", &len_str, "()"); - Py_ssize_t len; + static PyObject *len_str; + PyObject *res = call_method(self, "__len__", &len_str, "()"); + Py_ssize_t len; - if (res == NULL) - return -1; - len = PyNumber_AsSsize_t(res, PyExc_OverflowError); - Py_DECREF(res); - if (len < 0) { - if (!PyErr_Occurred()) - PyErr_SetString(PyExc_ValueError, - "__len__() should return >= 0"); - return -1; - } - return len; + if (res == NULL) + return -1; + len = PyNumber_AsSsize_t(res, PyExc_OverflowError); + Py_DECREF(res); + if (len < 0) { + if (!PyErr_Occurred()) + PyErr_SetString(PyExc_ValueError, + "__len__() should return >= 0"); + return -1; + } + return len; } /* Super-optimized version of slot_sq_item. @@ -4636,93 +4636,93 @@ slot_sq_length(PyObject *self) static PyObject * slot_sq_item(PyObject *self, Py_ssize_t i) { - static PyObject *getitem_str; - PyObject *func, *args = NULL, *ival = NULL, *retval = NULL; - descrgetfunc f; - - if (getitem_str == NULL) { - getitem_str = PyUnicode_InternFromString("__getitem__"); - if (getitem_str == NULL) - return NULL; - } - func = _PyType_Lookup(Py_TYPE(self), getitem_str); - if (func != NULL) { - if ((f = Py_TYPE(func)->tp_descr_get) == NULL) - Py_INCREF(func); - else { - func = f(func, self, (PyObject *)(Py_TYPE(self))); - if (func == NULL) { - return NULL; - } - } - ival = PyLong_FromSsize_t(i); - if (ival != NULL) { - args = PyTuple_New(1); - if (args != NULL) { - PyTuple_SET_ITEM(args, 0, ival); - retval = PyObject_Call(func, args, NULL); - Py_XDECREF(args); - Py_XDECREF(func); - return retval; - } - } - } - else { - PyErr_SetObject(PyExc_AttributeError, getitem_str); - } - Py_XDECREF(args); - Py_XDECREF(ival); - Py_XDECREF(func); - return NULL; + static PyObject *getitem_str; + PyObject *func, *args = NULL, *ival = NULL, *retval = NULL; + descrgetfunc f; + + if (getitem_str == NULL) { + getitem_str = PyUnicode_InternFromString("__getitem__"); + if (getitem_str == NULL) + return NULL; + } + func = _PyType_Lookup(Py_TYPE(self), getitem_str); + if (func != NULL) { + if ((f = Py_TYPE(func)->tp_descr_get) == NULL) + Py_INCREF(func); + else { + func = f(func, self, (PyObject *)(Py_TYPE(self))); + if (func == NULL) { + return NULL; + } + } + ival = PyLong_FromSsize_t(i); + if (ival != NULL) { + args = PyTuple_New(1); + if (args != NULL) { + PyTuple_SET_ITEM(args, 0, ival); + retval = PyObject_Call(func, args, NULL); + Py_XDECREF(args); + Py_XDECREF(func); + return retval; + } + } + } + else { + PyErr_SetObject(PyExc_AttributeError, getitem_str); + } + Py_XDECREF(args); + Py_XDECREF(ival); + Py_XDECREF(func); + return NULL; } static int slot_sq_ass_item(PyObject *self, Py_ssize_t index, PyObject *value) { - PyObject *res; - static PyObject *delitem_str, *setitem_str; + PyObject *res; + static PyObject *delitem_str, *setitem_str; - if (value == NULL) - res = call_method(self, "__delitem__", &delitem_str, - "(n)", index); - else - res = call_method(self, "__setitem__", &setitem_str, - "(nO)", index, value); - if (res == NULL) - return -1; - Py_DECREF(res); - return 0; + if (value == NULL) + res = call_method(self, "__delitem__", &delitem_str, + "(n)", index); + else + res = call_method(self, "__setitem__", &setitem_str, + "(nO)", index, value); + if (res == NULL) + return -1; + Py_DECREF(res); + return 0; } static int slot_sq_contains(PyObject *self, PyObject *value) { - PyObject *func, *res, *args; - int result = -1; - - static PyObject *contains_str; - - func = lookup_maybe(self, "__contains__", &contains_str); - if (func != NULL) { - args = PyTuple_Pack(1, value); - if (args == NULL) - res = NULL; - else { - res = PyObject_Call(func, args, NULL); - Py_DECREF(args); - } - Py_DECREF(func); - if (res != NULL) { - result = PyObject_IsTrue(res); - Py_DECREF(res); - } - } - else if (! PyErr_Occurred()) { - /* Possible results: -1 and 1 */ - result = (int)_PySequence_IterSearch(self, value, - PY_ITERSEARCH_CONTAINS); - } - return result; + PyObject *func, *res, *args; + int result = -1; + + static PyObject *contains_str; + + func = lookup_maybe(self, "__contains__", &contains_str); + if (func != NULL) { + args = PyTuple_Pack(1, value); + if (args == NULL) + res = NULL; + else { + res = PyObject_Call(func, args, NULL); + Py_DECREF(args); + } + Py_DECREF(func); + if (res != NULL) { + result = PyObject_IsTrue(res); + Py_DECREF(res); + } + } + else if (! PyErr_Occurred()) { + /* Possible results: -1 and 1 */ + result = (int)_PySequence_IterSearch(self, value, + PY_ITERSEARCH_CONTAINS); + } + return result; } #define slot_mp_length slot_sq_length @@ -4732,19 +4732,19 @@ SLOT1(slot_mp_subscript, "__getitem__", PyObject *, "O") static int slot_mp_ass_subscript(PyObject *self, PyObject *key, PyObject *value) { - PyObject *res; - static PyObject *delitem_str, *setitem_str; + PyObject *res; + static PyObject *delitem_str, *setitem_str; - if (value == NULL) - res = call_method(self, "__delitem__", &delitem_str, - "(O)", key); - else - res = call_method(self, "__setitem__", &setitem_str, - "(OO)", key, value); - if (res == NULL) - return -1; - Py_DECREF(res); - return 0; + if (value == NULL) + res = call_method(self, "__delitem__", &delitem_str, + "(O)", key); + else + res = call_method(self, "__setitem__", &setitem_str, + "(OO)", key, value); + if (res == NULL) + return -1; + Py_DECREF(res); + return 0; } SLOT1BIN(slot_nb_add, nb_add, "__add__", "__radd__") @@ -4756,25 +4756,25 @@ SLOT1BIN(slot_nb_divmod, nb_divmod, "__divmod__", "__rdivmod__") static PyObject *slot_nb_power(PyObject *, PyObject *, PyObject *); SLOT1BINFULL(slot_nb_power_binary, slot_nb_power, - nb_power, "__pow__", "__rpow__") + nb_power, "__pow__", "__rpow__") static PyObject * slot_nb_power(PyObject *self, PyObject *other, PyObject *modulus) { - static PyObject *pow_str; + static PyObject *pow_str; - if (modulus == Py_None) - return slot_nb_power_binary(self, other); - /* Three-arg power doesn't use __rpow__. But ternary_op - can call this when the second argument's type uses - slot_nb_power, so check before calling self.__pow__. */ - if (Py_TYPE(self)->tp_as_number != NULL && - Py_TYPE(self)->tp_as_number->nb_power == slot_nb_power) { - return call_method(self, "__pow__", &pow_str, - "(OO)", other, modulus); - } - Py_INCREF(Py_NotImplemented); - return Py_NotImplemented; + if (modulus == Py_None) + return slot_nb_power_binary(self, other); + /* Three-arg power doesn't use __rpow__. But ternary_op + can call this when the second argument's type uses + slot_nb_power, so check before calling self.__pow__. */ + if (Py_TYPE(self)->tp_as_number != NULL && + Py_TYPE(self)->tp_as_number->nb_power == slot_nb_power) { + return call_method(self, "__pow__", &pow_str, + "(OO)", other, modulus); + } + Py_INCREF(Py_NotImplemented); + return Py_NotImplemented; } SLOT0(slot_nb_negative, "__neg__") @@ -4784,52 +4784,52 @@ SLOT0(slot_nb_absolute, "__abs__") static int slot_nb_bool(PyObject *self) { - PyObject *func, *args; - static PyObject *bool_str, *len_str; - int result = -1; - int using_len = 0; - - func = lookup_maybe(self, "__bool__", &bool_str); - if (func == NULL) { - if (PyErr_Occurred()) - return -1; - func = lookup_maybe(self, "__len__", &len_str); - if (func == NULL) - return PyErr_Occurred() ? -1 : 1; - using_len = 1; - } - args = PyTuple_New(0); - if (args != NULL) { - PyObject *temp = PyObject_Call(func, args, NULL); - Py_DECREF(args); - if (temp != NULL) { - if (using_len) { - /* enforced by slot_nb_len */ - result = PyObject_IsTrue(temp); - } - else if (PyBool_Check(temp)) { - result = PyObject_IsTrue(temp); - } - else { - PyErr_Format(PyExc_TypeError, - "__bool__ should return " - "bool, returned %s", - Py_TYPE(temp)->tp_name); - result = -1; - } - Py_DECREF(temp); - } - } - Py_DECREF(func); - return result; + PyObject *func, *args; + static PyObject *bool_str, *len_str; + int result = -1; + int using_len = 0; + + func = lookup_maybe(self, "__bool__", &bool_str); + if (func == NULL) { + if (PyErr_Occurred()) + return -1; + func = lookup_maybe(self, "__len__", &len_str); + if (func == NULL) + return PyErr_Occurred() ? -1 : 1; + using_len = 1; + } + args = PyTuple_New(0); + if (args != NULL) { + PyObject *temp = PyObject_Call(func, args, NULL); + Py_DECREF(args); + if (temp != NULL) { + if (using_len) { + /* enforced by slot_nb_len */ + result = PyObject_IsTrue(temp); + } + else if (PyBool_Check(temp)) { + result = PyObject_IsTrue(temp); + } + else { + PyErr_Format(PyExc_TypeError, + "__bool__ should return " + "bool, returned %s", + Py_TYPE(temp)->tp_name); + result = -1; + } + Py_DECREF(temp); + } + } + Py_DECREF(func); + return result; } static PyObject * slot_nb_index(PyObject *self) { - static PyObject *index_str; - return call_method(self, "__index__", &index_str, "()"); + static PyObject *index_str; + return call_method(self, "__index__", &index_str, "()"); } @@ -4847,11 +4847,11 @@ SLOT1(slot_nb_inplace_subtract, "__isub__", PyObject *, "O") SLOT1(slot_nb_inplace_multiply, "__imul__", PyObject *, "O") SLOT1(slot_nb_inplace_remainder, "__imod__", PyObject *, "O") /* Can't use SLOT1 here, because nb_inplace_power is ternary */ -static PyObject * -slot_nb_inplace_power(PyObject *self, PyObject * arg1, PyObject *arg2) -{ - static PyObject *cache_str; - return call_method(self, "__ipow__", &cache_str, "(" "O" ")", arg1); +static PyObject * +slot_nb_inplace_power(PyObject *self, PyObject * arg1, PyObject *arg2) +{ + static PyObject *cache_str; + return call_method(self, "__ipow__", &cache_str, "(" "O" ")", arg1); } SLOT1(slot_nb_inplace_lshift, "__ilshift__", PyObject *, "O") SLOT1(slot_nb_inplace_rshift, "__irshift__", PyObject *, "O") @@ -4859,7 +4859,7 @@ SLOT1(slot_nb_inplace_and, "__iand__", PyObject *, "O") SLOT1(slot_nb_inplace_xor, "__ixor__", PyObject *, "O") SLOT1(slot_nb_inplace_or, "__ior__", PyObject *, "O") SLOT1BIN(slot_nb_floor_divide, nb_floor_divide, - "__floordiv__", "__rfloordiv__") + "__floordiv__", "__rfloordiv__") SLOT1BIN(slot_nb_true_divide, nb_true_divide, "__truediv__", "__rtruediv__") SLOT1(slot_nb_inplace_floor_divide, "__ifloordiv__", PyObject *, "O") SLOT1(slot_nb_inplace_true_divide, "__itruediv__", PyObject *, "O") @@ -4867,90 +4867,90 @@ SLOT1(slot_nb_inplace_true_divide, "__itruediv__", PyObject *, "O") static PyObject * slot_tp_repr(PyObject *self) { - PyObject *func, *res; - static PyObject *repr_str; + PyObject *func, *res; + static PyObject *repr_str; - func = lookup_method(self, "__repr__", &repr_str); - if (func != NULL) { - res = PyEval_CallObject(func, NULL); - Py_DECREF(func); - return res; - } - PyErr_Clear(); - return PyUnicode_FromFormat("<%s object at %p>", - Py_TYPE(self)->tp_name, self); + func = lookup_method(self, "__repr__", &repr_str); + if (func != NULL) { + res = PyEval_CallObject(func, NULL); + Py_DECREF(func); + return res; + } + PyErr_Clear(); + return PyUnicode_FromFormat("<%s object at %p>", + Py_TYPE(self)->tp_name, self); } static PyObject * slot_tp_str(PyObject *self) { - PyObject *func, *res; - static PyObject *str_str; - - func = lookup_method(self, "__str__", &str_str); - if (func != NULL) { - res = PyEval_CallObject(func, NULL); - Py_DECREF(func); - return res; - } - else { - PyObject *ress; - PyErr_Clear(); - res = slot_tp_repr(self); - if (!res) - return NULL; - ress = _PyUnicode_AsDefaultEncodedString(res, NULL); - Py_DECREF(res); - return ress; - } + PyObject *func, *res; + static PyObject *str_str; + + func = lookup_method(self, "__str__", &str_str); + if (func != NULL) { + res = PyEval_CallObject(func, NULL); + Py_DECREF(func); + return res; + } + else { + PyObject *ress; + PyErr_Clear(); + res = slot_tp_repr(self); + if (!res) + return NULL; + ress = _PyUnicode_AsDefaultEncodedString(res, NULL); + Py_DECREF(res); + return ress; + } } static long slot_tp_hash(PyObject *self) { - PyObject *func, *res; - static PyObject *hash_str; - long h; + PyObject *func, *res; + static PyObject *hash_str; + long h; - func = lookup_method(self, "__hash__", &hash_str); + func = lookup_method(self, "__hash__", &hash_str); - if (func == Py_None) { - Py_DECREF(func); - func = NULL; - } + if (func == Py_None) { + Py_DECREF(func); + func = NULL; + } - if (func == NULL) { - return PyObject_HashNotImplemented(self); - } + if (func == NULL) { + return PyObject_HashNotImplemented(self); + } - res = PyEval_CallObject(func, NULL); - Py_DECREF(func); - if (res == NULL) - return -1; - if (PyLong_Check(res)) - h = PyLong_Type.tp_hash(res); - else - h = PyLong_AsLong(res); - Py_DECREF(res); - if (h == -1 && !PyErr_Occurred()) - h = -2; - return h; + res = PyEval_CallObject(func, NULL); + Py_DECREF(func); + if (res == NULL) + return -1; + if (PyLong_Check(res)) + h = PyLong_Type.tp_hash(res); + else + h = PyLong_AsLong(res); + Py_DECREF(res); + if (h == -1 && !PyErr_Occurred()) + h = -2; + return h; } static PyObject * slot_tp_call(PyObject *self, PyObject *args, PyObject *kwds) { - static PyObject *call_str; - PyObject *meth = lookup_method(self, "__call__", &call_str); - PyObject *res; + static PyObject *call_str; + PyObject *meth = lookup_method(self, "__call__", &call_str); + PyObject *res; - if (meth == NULL) - return NULL; + if (meth == NULL) + return NULL; - res = PyObject_Call(meth, args, kwds); + res = PyObject_Call(meth, args, kwds); - Py_DECREF(meth); - return res; + Py_DECREF(meth); + return res; } /* There are two slot dispatch functions for tp_getattro. @@ -4967,100 +4967,100 @@ slot_tp_call(PyObject *self, PyObject *args, PyObject *kwds) static PyObject * slot_tp_getattro(PyObject *self, PyObject *name) { - static PyObject *getattribute_str = NULL; - return call_method(self, "__getattribute__", &getattribute_str, - "(O)", name); + static PyObject *getattribute_str = NULL; + return call_method(self, "__getattribute__", &getattribute_str, + "(O)", name); } static PyObject * call_attribute(PyObject *self, PyObject *attr, PyObject *name) { - PyObject *res, *descr = NULL; - descrgetfunc f = Py_TYPE(attr)->tp_descr_get; + PyObject *res, *descr = NULL; + descrgetfunc f = Py_TYPE(attr)->tp_descr_get; - if (f != NULL) { - descr = f(attr, self, (PyObject *)(Py_TYPE(self))); - if (descr == NULL) - return NULL; - else - attr = descr; - } - res = PyObject_CallFunctionObjArgs(attr, name, NULL); - Py_XDECREF(descr); - return res; + if (f != NULL) { + descr = f(attr, self, (PyObject *)(Py_TYPE(self))); + if (descr == NULL) + return NULL; + else + attr = descr; + } + res = PyObject_CallFunctionObjArgs(attr, name, NULL); + Py_XDECREF(descr); + return res; } static PyObject * slot_tp_getattr_hook(PyObject *self, PyObject *name) { - PyTypeObject *tp = Py_TYPE(self); - PyObject *getattr, *getattribute, *res; - static PyObject *getattribute_str = NULL; - static PyObject *getattr_str = NULL; - - if (getattr_str == NULL) { - getattr_str = PyUnicode_InternFromString("__getattr__"); - if (getattr_str == NULL) - return NULL; - } - if (getattribute_str == NULL) { - getattribute_str = - PyUnicode_InternFromString("__getattribute__"); - if (getattribute_str == NULL) - return NULL; - } - /* speed hack: we could use lookup_maybe, but that would resolve the - method fully for each attribute lookup for classes with - __getattr__, even when the attribute is present. So we use - _PyType_Lookup and create the method only when needed, with - call_attribute. */ - getattr = _PyType_Lookup(tp, getattr_str); - if (getattr == NULL) { - /* No __getattr__ hook: use a simpler dispatcher */ - tp->tp_getattro = slot_tp_getattro; - return slot_tp_getattro(self, name); - } - Py_INCREF(getattr); - /* speed hack: we could use lookup_maybe, but that would resolve the - method fully for each attribute lookup for classes with - __getattr__, even when self has the default __getattribute__ - method. So we use _PyType_Lookup and create the method only when - needed, with call_attribute. */ - getattribute = _PyType_Lookup(tp, getattribute_str); - if (getattribute == NULL || - (Py_TYPE(getattribute) == &PyWrapperDescr_Type && - ((PyWrapperDescrObject *)getattribute)->d_wrapped == - (void *)PyObject_GenericGetAttr)) - res = PyObject_GenericGetAttr(self, name); - else { - Py_INCREF(getattribute); - res = call_attribute(self, getattribute, name); - Py_DECREF(getattribute); - } - if (res == NULL && PyErr_ExceptionMatches(PyExc_AttributeError)) { - PyErr_Clear(); - res = call_attribute(self, getattr, name); - } - Py_DECREF(getattr); - return res; + PyTypeObject *tp = Py_TYPE(self); + PyObject *getattr, *getattribute, *res; + static PyObject *getattribute_str = NULL; + static PyObject *getattr_str = NULL; + + if (getattr_str == NULL) { + getattr_str = PyUnicode_InternFromString("__getattr__"); + if (getattr_str == NULL) + return NULL; + } + if (getattribute_str == NULL) { + getattribute_str = + PyUnicode_InternFromString("__getattribute__"); + if (getattribute_str == NULL) + return NULL; + } + /* speed hack: we could use lookup_maybe, but that would resolve the + method fully for each attribute lookup for classes with + __getattr__, even when the attribute is present. So we use + _PyType_Lookup and create the method only when needed, with + call_attribute. */ + getattr = _PyType_Lookup(tp, getattr_str); + if (getattr == NULL) { + /* No __getattr__ hook: use a simpler dispatcher */ + tp->tp_getattro = slot_tp_getattro; + return slot_tp_getattro(self, name); + } + Py_INCREF(getattr); + /* speed hack: we could use lookup_maybe, but that would resolve the + method fully for each attribute lookup for classes with + __getattr__, even when self has the default __getattribute__ + method. So we use _PyType_Lookup and create the method only when + needed, with call_attribute. */ + getattribute = _PyType_Lookup(tp, getattribute_str); + if (getattribute == NULL || + (Py_TYPE(getattribute) == &PyWrapperDescr_Type && + ((PyWrapperDescrObject *)getattribute)->d_wrapped == + (void *)PyObject_GenericGetAttr)) + res = PyObject_GenericGetAttr(self, name); + else { + Py_INCREF(getattribute); + res = call_attribute(self, getattribute, name); + Py_DECREF(getattribute); + } + if (res == NULL && PyErr_ExceptionMatches(PyExc_AttributeError)) { + PyErr_Clear(); + res = call_attribute(self, getattr, name); + } + Py_DECREF(getattr); + return res; } static int slot_tp_setattro(PyObject *self, PyObject *name, PyObject *value) { - PyObject *res; - static PyObject *delattr_str, *setattr_str; + PyObject *res; + static PyObject *delattr_str, *setattr_str; - if (value == NULL) - res = call_method(self, "__delattr__", &delattr_str, - "(O)", name); - else - res = call_method(self, "__setattr__", &setattr_str, - "(OO)", name, value); - if (res == NULL) - return -1; - Py_DECREF(res); - return 0; + if (value == NULL) + res = call_method(self, "__delattr__", &delattr_str, + "(O)", name); + else + res = call_method(self, "__setattr__", &setattr_str, + "(OO)", name, value); + if (res == NULL) + return -1; + Py_DECREF(res); + return 0; } static char *name_op[] = { @@ -5075,244 +5075,244 @@ static char *name_op[] = { static PyObject * half_richcompare(PyObject *self, PyObject *other, int op) { - PyObject *func, *args, *res; - static PyObject *op_str[6]; - - func = lookup_method(self, name_op[op], &op_str[op]); - if (func == NULL) { - PyErr_Clear(); - Py_INCREF(Py_NotImplemented); - return Py_NotImplemented; - } - args = PyTuple_Pack(1, other); - if (args == NULL) - res = NULL; - else { - res = PyObject_Call(func, args, NULL); - Py_DECREF(args); - } - Py_DECREF(func); - return res; + PyObject *func, *args, *res; + static PyObject *op_str[6]; + + func = lookup_method(self, name_op[op], &op_str[op]); + if (func == NULL) { + PyErr_Clear(); + Py_INCREF(Py_NotImplemented); + return Py_NotImplemented; + } + args = PyTuple_Pack(1, other); + if (args == NULL) + res = NULL; + else { + res = PyObject_Call(func, args, NULL); + Py_DECREF(args); + } + Py_DECREF(func); + return res; } static PyObject * slot_tp_richcompare(PyObject *self, PyObject *other, int op) { - PyObject *res; - - if (Py_TYPE(self)->tp_richcompare == slot_tp_richcompare) { - res = half_richcompare(self, other, op); - if (res != Py_NotImplemented) - return res; - Py_DECREF(res); - } - if (Py_TYPE(other)->tp_richcompare == slot_tp_richcompare) { - res = half_richcompare(other, self, _Py_SwappedOp[op]); - if (res != Py_NotImplemented) { - return res; - } - Py_DECREF(res); - } - Py_INCREF(Py_NotImplemented); - return Py_NotImplemented; + PyObject *res; + + if (Py_TYPE(self)->tp_richcompare == slot_tp_richcompare) { + res = half_richcompare(self, other, op); + if (res != Py_NotImplemented) + return res; + Py_DECREF(res); + } + if (Py_TYPE(other)->tp_richcompare == slot_tp_richcompare) { + res = half_richcompare(other, self, _Py_SwappedOp[op]); + if (res != Py_NotImplemented) { + return res; + } + Py_DECREF(res); + } + Py_INCREF(Py_NotImplemented); + return Py_NotImplemented; } static PyObject * slot_tp_iter(PyObject *self) { - PyObject *func, *res; - static PyObject *iter_str, *getitem_str; - - func = lookup_method(self, "__iter__", &iter_str); - if (func != NULL) { - PyObject *args; - args = res = PyTuple_New(0); - if (args != NULL) { - res = PyObject_Call(func, args, NULL); - Py_DECREF(args); - } - Py_DECREF(func); - return res; - } - PyErr_Clear(); - func = lookup_method(self, "__getitem__", &getitem_str); - if (func == NULL) { - PyErr_Format(PyExc_TypeError, - "'%.200s' object is not iterable", - Py_TYPE(self)->tp_name); - return NULL; - } - Py_DECREF(func); - return PySeqIter_New(self); + PyObject *func, *res; + static PyObject *iter_str, *getitem_str; + + func = lookup_method(self, "__iter__", &iter_str); + if (func != NULL) { + PyObject *args; + args = res = PyTuple_New(0); + if (args != NULL) { + res = PyObject_Call(func, args, NULL); + Py_DECREF(args); + } + Py_DECREF(func); + return res; + } + PyErr_Clear(); + func = lookup_method(self, "__getitem__", &getitem_str); + if (func == NULL) { + PyErr_Format(PyExc_TypeError, + "'%.200s' object is not iterable", + Py_TYPE(self)->tp_name); + return NULL; + } + Py_DECREF(func); + return PySeqIter_New(self); } static PyObject * slot_tp_iternext(PyObject *self) { - static PyObject *next_str; - return call_method(self, "__next__", &next_str, "()"); + static PyObject *next_str; + return call_method(self, "__next__", &next_str, "()"); } static PyObject * slot_tp_descr_get(PyObject *self, PyObject *obj, PyObject *type) { - PyTypeObject *tp = Py_TYPE(self); - PyObject *get; - static PyObject *get_str = NULL; - - if (get_str == NULL) { - get_str = PyUnicode_InternFromString("__get__"); - if (get_str == NULL) - return NULL; - } - get = _PyType_Lookup(tp, get_str); - if (get == NULL) { - /* Avoid further slowdowns */ - if (tp->tp_descr_get == slot_tp_descr_get) - tp->tp_descr_get = NULL; - Py_INCREF(self); - return self; - } - if (obj == NULL) - obj = Py_None; - if (type == NULL) - type = Py_None; - return PyObject_CallFunctionObjArgs(get, self, obj, type, NULL); + PyTypeObject *tp = Py_TYPE(self); + PyObject *get; + static PyObject *get_str = NULL; + + if (get_str == NULL) { + get_str = PyUnicode_InternFromString("__get__"); + if (get_str == NULL) + return NULL; + } + get = _PyType_Lookup(tp, get_str); + if (get == NULL) { + /* Avoid further slowdowns */ + if (tp->tp_descr_get == slot_tp_descr_get) + tp->tp_descr_get = NULL; + Py_INCREF(self); + return self; + } + if (obj == NULL) + obj = Py_None; + if (type == NULL) + type = Py_None; + return PyObject_CallFunctionObjArgs(get, self, obj, type, NULL); } static int slot_tp_descr_set(PyObject *self, PyObject *target, PyObject *value) { - PyObject *res; - static PyObject *del_str, *set_str; + PyObject *res; + static PyObject *del_str, *set_str; - if (value == NULL) - res = call_method(self, "__delete__", &del_str, - "(O)", target); - else - res = call_method(self, "__set__", &set_str, - "(OO)", target, value); - if (res == NULL) - return -1; - Py_DECREF(res); - return 0; + if (value == NULL) + res = call_method(self, "__delete__", &del_str, + "(O)", target); + else + res = call_method(self, "__set__", &set_str, + "(OO)", target, value); + if (res == NULL) + return -1; + Py_DECREF(res); + return 0; } static int slot_tp_init(PyObject *self, PyObject *args, PyObject *kwds) { - static PyObject *init_str; - PyObject *meth = lookup_method(self, "__init__", &init_str); - PyObject *res; - - if (meth == NULL) - return -1; - res = PyObject_Call(meth, args, kwds); - Py_DECREF(meth); - if (res == NULL) - return -1; - if (res != Py_None) { - PyErr_Format(PyExc_TypeError, - "__init__() should return None, not '%.200s'", - Py_TYPE(res)->tp_name); - Py_DECREF(res); - return -1; - } - Py_DECREF(res); - return 0; + static PyObject *init_str; + PyObject *meth = lookup_method(self, "__init__", &init_str); + PyObject *res; + + if (meth == NULL) + return -1; + res = PyObject_Call(meth, args, kwds); + Py_DECREF(meth); + if (res == NULL) + return -1; + if (res != Py_None) { + PyErr_Format(PyExc_TypeError, + "__init__() should return None, not '%.200s'", + Py_TYPE(res)->tp_name); + Py_DECREF(res); + return -1; + } + Py_DECREF(res); + return 0; } static PyObject * slot_tp_new(PyTypeObject *type, PyObject *args, PyObject *kwds) { - static PyObject *new_str; - PyObject *func; - PyObject *newargs, *x; - Py_ssize_t i, n; - - if (new_str == NULL) { - new_str = PyUnicode_InternFromString("__new__"); - if (new_str == NULL) - return NULL; - } - func = PyObject_GetAttr((PyObject *)type, new_str); - if (func == NULL) - return NULL; - assert(PyTuple_Check(args)); - n = PyTuple_GET_SIZE(args); - newargs = PyTuple_New(n+1); - if (newargs == NULL) - return NULL; - Py_INCREF(type); - PyTuple_SET_ITEM(newargs, 0, (PyObject *)type); - for (i = 0; i < n; i++) { - x = PyTuple_GET_ITEM(args, i); - Py_INCREF(x); - PyTuple_SET_ITEM(newargs, i+1, x); - } - x = PyObject_Call(func, newargs, kwds); - Py_DECREF(newargs); - Py_DECREF(func); - return x; + static PyObject *new_str; + PyObject *func; + PyObject *newargs, *x; + Py_ssize_t i, n; + + if (new_str == NULL) { + new_str = PyUnicode_InternFromString("__new__"); + if (new_str == NULL) + return NULL; + } + func = PyObject_GetAttr((PyObject *)type, new_str); + if (func == NULL) + return NULL; + assert(PyTuple_Check(args)); + n = PyTuple_GET_SIZE(args); + newargs = PyTuple_New(n+1); + if (newargs == NULL) + return NULL; + Py_INCREF(type); + PyTuple_SET_ITEM(newargs, 0, (PyObject *)type); + for (i = 0; i < n; i++) { + x = PyTuple_GET_ITEM(args, i); + Py_INCREF(x); + PyTuple_SET_ITEM(newargs, i+1, x); + } + x = PyObject_Call(func, newargs, kwds); + Py_DECREF(newargs); + Py_DECREF(func); + return x; } static void slot_tp_del(PyObject *self) { - static PyObject *del_str = NULL; - PyObject *del, *res; - PyObject *error_type, *error_value, *error_traceback; - - /* Temporarily resurrect the object. */ - assert(self->ob_refcnt == 0); - self->ob_refcnt = 1; - - /* Save the current exception, if any. */ - PyErr_Fetch(&error_type, &error_value, &error_traceback); - - /* Execute __del__ method, if any. */ - del = lookup_maybe(self, "__del__", &del_str); - if (del != NULL) { - res = PyEval_CallObject(del, NULL); - if (res == NULL) - PyErr_WriteUnraisable(del); - else - Py_DECREF(res); - Py_DECREF(del); - } - - /* Restore the saved exception. */ - PyErr_Restore(error_type, error_value, error_traceback); - - /* Undo the temporary resurrection; can't use DECREF here, it would - * cause a recursive call. - */ - assert(self->ob_refcnt > 0); - if (--self->ob_refcnt == 0) - return; /* this is the normal path out */ - - /* __del__ resurrected it! Make it look like the original Py_DECREF - * never happened. - */ - { - Py_ssize_t refcnt = self->ob_refcnt; - _Py_NewReference(self); - self->ob_refcnt = refcnt; - } - assert(!PyType_IS_GC(Py_TYPE(self)) || - _Py_AS_GC(self)->gc.gc_refs != _PyGC_REFS_UNTRACKED); - /* If Py_REF_DEBUG, _Py_NewReference bumped _Py_RefTotal, so - * we need to undo that. */ - _Py_DEC_REFTOTAL; - /* If Py_TRACE_REFS, _Py_NewReference re-added self to the object - * chain, so no more to do there. - * If COUNT_ALLOCS, the original decref bumped tp_frees, and - * _Py_NewReference bumped tp_allocs: both of those need to be - * undone. - */ + static PyObject *del_str = NULL; + PyObject *del, *res; + PyObject *error_type, *error_value, *error_traceback; + + /* Temporarily resurrect the object. */ + assert(self->ob_refcnt == 0); + self->ob_refcnt = 1; + + /* Save the current exception, if any. */ + PyErr_Fetch(&error_type, &error_value, &error_traceback); + + /* Execute __del__ method, if any. */ + del = lookup_maybe(self, "__del__", &del_str); + if (del != NULL) { + res = PyEval_CallObject(del, NULL); + if (res == NULL) + PyErr_WriteUnraisable(del); + else + Py_DECREF(res); + Py_DECREF(del); + } + + /* Restore the saved exception. */ + PyErr_Restore(error_type, error_value, error_traceback); + + /* Undo the temporary resurrection; can't use DECREF here, it would + * cause a recursive call. + */ + assert(self->ob_refcnt > 0); + if (--self->ob_refcnt == 0) + return; /* this is the normal path out */ + + /* __del__ resurrected it! Make it look like the original Py_DECREF + * never happened. + */ + { + Py_ssize_t refcnt = self->ob_refcnt; + _Py_NewReference(self); + self->ob_refcnt = refcnt; + } + assert(!PyType_IS_GC(Py_TYPE(self)) || + _Py_AS_GC(self)->gc.gc_refs != _PyGC_REFS_UNTRACKED); + /* If Py_REF_DEBUG, _Py_NewReference bumped _Py_RefTotal, so + * we need to undo that. */ + _Py_DEC_REFTOTAL; + /* If Py_TRACE_REFS, _Py_NewReference re-added self to the object + * chain, so no more to do there. + * If COUNT_ALLOCS, the original decref bumped tp_frees, and + * _Py_NewReference bumped tp_allocs: both of those need to be + * undone. + */ #ifdef COUNT_ALLOCS - --Py_TYPE(self)->tp_frees; - --Py_TYPE(self)->tp_allocs; + --Py_TYPE(self)->tp_frees; + --Py_TYPE(self)->tp_allocs; #endif } @@ -5341,236 +5341,236 @@ typedef struct wrapperbase slotdef; #undef RBINSLOT #define TPSLOT(NAME, SLOT, FUNCTION, WRAPPER, DOC) \ - {NAME, offsetof(PyTypeObject, SLOT), (void *)(FUNCTION), WRAPPER, \ - PyDoc_STR(DOC)} + {NAME, offsetof(PyTypeObject, SLOT), (void *)(FUNCTION), WRAPPER, \ + PyDoc_STR(DOC)} #define FLSLOT(NAME, SLOT, FUNCTION, WRAPPER, DOC, FLAGS) \ - {NAME, offsetof(PyTypeObject, SLOT), (void *)(FUNCTION), WRAPPER, \ - PyDoc_STR(DOC), FLAGS} + {NAME, offsetof(PyTypeObject, SLOT), (void *)(FUNCTION), WRAPPER, \ + PyDoc_STR(DOC), FLAGS} #define ETSLOT(NAME, SLOT, FUNCTION, WRAPPER, DOC) \ - {NAME, offsetof(PyHeapTypeObject, SLOT), (void *)(FUNCTION), WRAPPER, \ - PyDoc_STR(DOC)} + {NAME, offsetof(PyHeapTypeObject, SLOT), (void *)(FUNCTION), WRAPPER, \ + PyDoc_STR(DOC)} #define SQSLOT(NAME, SLOT, FUNCTION, WRAPPER, DOC) \ - ETSLOT(NAME, as_sequence.SLOT, FUNCTION, WRAPPER, DOC) + ETSLOT(NAME, as_sequence.SLOT, FUNCTION, WRAPPER, DOC) #define MPSLOT(NAME, SLOT, FUNCTION, WRAPPER, DOC) \ - ETSLOT(NAME, as_mapping.SLOT, FUNCTION, WRAPPER, DOC) + ETSLOT(NAME, as_mapping.SLOT, FUNCTION, WRAPPER, DOC) #define NBSLOT(NAME, SLOT, FUNCTION, WRAPPER, DOC) \ - ETSLOT(NAME, as_number.SLOT, FUNCTION, WRAPPER, DOC) + ETSLOT(NAME, as_number.SLOT, FUNCTION, WRAPPER, DOC) #define UNSLOT(NAME, SLOT, FUNCTION, WRAPPER, DOC) \ - ETSLOT(NAME, as_number.SLOT, FUNCTION, WRAPPER, \ - "x." NAME "() <==> " DOC) + ETSLOT(NAME, as_number.SLOT, FUNCTION, WRAPPER, \ + "x." NAME "() <==> " DOC) #define IBSLOT(NAME, SLOT, FUNCTION, WRAPPER, DOC) \ - ETSLOT(NAME, as_number.SLOT, FUNCTION, WRAPPER, \ - "x." NAME "(y) <==> x" DOC "y") + ETSLOT(NAME, as_number.SLOT, FUNCTION, WRAPPER, \ + "x." NAME "(y) <==> x" DOC "y") #define BINSLOT(NAME, SLOT, FUNCTION, DOC) \ - ETSLOT(NAME, as_number.SLOT, FUNCTION, wrap_binaryfunc_l, \ - "x." NAME "(y) <==> x" DOC "y") + ETSLOT(NAME, as_number.SLOT, FUNCTION, wrap_binaryfunc_l, \ + "x." NAME "(y) <==> x" DOC "y") #define RBINSLOT(NAME, SLOT, FUNCTION, DOC) \ - ETSLOT(NAME, as_number.SLOT, FUNCTION, wrap_binaryfunc_r, \ - "x." NAME "(y) <==> y" DOC "x") + ETSLOT(NAME, as_number.SLOT, FUNCTION, wrap_binaryfunc_r, \ + "x." NAME "(y) <==> y" DOC "x") #define BINSLOTNOTINFIX(NAME, SLOT, FUNCTION, DOC) \ - ETSLOT(NAME, as_number.SLOT, FUNCTION, wrap_binaryfunc_l, \ - "x." NAME "(y) <==> " DOC) + ETSLOT(NAME, as_number.SLOT, FUNCTION, wrap_binaryfunc_l, \ + "x." NAME "(y) <==> " DOC) #define RBINSLOTNOTINFIX(NAME, SLOT, FUNCTION, DOC) \ - ETSLOT(NAME, as_number.SLOT, FUNCTION, wrap_binaryfunc_r, \ - "x." NAME "(y) <==> " DOC) + ETSLOT(NAME, as_number.SLOT, FUNCTION, wrap_binaryfunc_r, \ + "x." NAME "(y) <==> " DOC) static slotdef slotdefs[] = { - SQSLOT("__len__", sq_length, slot_sq_length, wrap_lenfunc, - "x.__len__() <==> len(x)"), - /* Heap types defining __add__/__mul__ have sq_concat/sq_repeat == NULL. - The logic in abstract.c always falls back to nb_add/nb_multiply in - this case. Defining both the nb_* and the sq_* slots to call the - user-defined methods has unexpected side-effects, as shown by - test_descr.notimplemented() */ - SQSLOT("__add__", sq_concat, NULL, wrap_binaryfunc, - "x.__add__(y) <==> x+y"), - SQSLOT("__mul__", sq_repeat, NULL, wrap_indexargfunc, - "x.__mul__(n) <==> x*n"), - SQSLOT("__rmul__", sq_repeat, NULL, wrap_indexargfunc, - "x.__rmul__(n) <==> n*x"), - SQSLOT("__getitem__", sq_item, slot_sq_item, wrap_sq_item, - "x.__getitem__(y) <==> x[y]"), - SQSLOT("__setitem__", sq_ass_item, slot_sq_ass_item, wrap_sq_setitem, - "x.__setitem__(i, y) <==> x[i]=y"), - SQSLOT("__delitem__", sq_ass_item, slot_sq_ass_item, wrap_sq_delitem, - "x.__delitem__(y) <==> del x[y]"), - SQSLOT("__contains__", sq_contains, slot_sq_contains, wrap_objobjproc, - "x.__contains__(y) <==> y in x"), - SQSLOT("__iadd__", sq_inplace_concat, NULL, - wrap_binaryfunc, "x.__iadd__(y) <==> x+=y"), - SQSLOT("__imul__", sq_inplace_repeat, NULL, - wrap_indexargfunc, "x.__imul__(y) <==> x*=y"), - - MPSLOT("__len__", mp_length, slot_mp_length, wrap_lenfunc, - "x.__len__() <==> len(x)"), - MPSLOT("__getitem__", mp_subscript, slot_mp_subscript, - wrap_binaryfunc, - "x.__getitem__(y) <==> x[y]"), - MPSLOT("__setitem__", mp_ass_subscript, slot_mp_ass_subscript, - wrap_objobjargproc, - "x.__setitem__(i, y) <==> x[i]=y"), - MPSLOT("__delitem__", mp_ass_subscript, slot_mp_ass_subscript, - wrap_delitem, - "x.__delitem__(y) <==> del x[y]"), - - BINSLOT("__add__", nb_add, slot_nb_add, - "+"), - RBINSLOT("__radd__", nb_add, slot_nb_add, - "+"), - BINSLOT("__sub__", nb_subtract, slot_nb_subtract, - "-"), - RBINSLOT("__rsub__", nb_subtract, slot_nb_subtract, - "-"), - BINSLOT("__mul__", nb_multiply, slot_nb_multiply, - "*"), - RBINSLOT("__rmul__", nb_multiply, slot_nb_multiply, - "*"), - BINSLOT("__mod__", nb_remainder, slot_nb_remainder, - "%"), - RBINSLOT("__rmod__", nb_remainder, slot_nb_remainder, - "%"), - BINSLOTNOTINFIX("__divmod__", nb_divmod, slot_nb_divmod, - "divmod(x, y)"), - RBINSLOTNOTINFIX("__rdivmod__", nb_divmod, slot_nb_divmod, - "divmod(y, x)"), - NBSLOT("__pow__", nb_power, slot_nb_power, wrap_ternaryfunc, - "x.__pow__(y[, z]) <==> pow(x, y[, z])"), - NBSLOT("__rpow__", nb_power, slot_nb_power, wrap_ternaryfunc_r, - "y.__rpow__(x[, z]) <==> pow(x, y[, z])"), - UNSLOT("__neg__", nb_negative, slot_nb_negative, wrap_unaryfunc, "-x"), - UNSLOT("__pos__", nb_positive, slot_nb_positive, wrap_unaryfunc, "+x"), - UNSLOT("__abs__", nb_absolute, slot_nb_absolute, wrap_unaryfunc, - "abs(x)"), - UNSLOT("__bool__", nb_bool, slot_nb_bool, wrap_inquirypred, - "x != 0"), - UNSLOT("__invert__", nb_invert, slot_nb_invert, wrap_unaryfunc, "~x"), - BINSLOT("__lshift__", nb_lshift, slot_nb_lshift, "<<"), - RBINSLOT("__rlshift__", nb_lshift, slot_nb_lshift, "<<"), - BINSLOT("__rshift__", nb_rshift, slot_nb_rshift, ">>"), - RBINSLOT("__rrshift__", nb_rshift, slot_nb_rshift, ">>"), - BINSLOT("__and__", nb_and, slot_nb_and, "&"), - RBINSLOT("__rand__", nb_and, slot_nb_and, "&"), - BINSLOT("__xor__", nb_xor, slot_nb_xor, "^"), - RBINSLOT("__rxor__", nb_xor, slot_nb_xor, "^"), - BINSLOT("__or__", nb_or, slot_nb_or, "|"), - RBINSLOT("__ror__", nb_or, slot_nb_or, "|"), - UNSLOT("__int__", nb_int, slot_nb_int, wrap_unaryfunc, - "int(x)"), - UNSLOT("__float__", nb_float, slot_nb_float, wrap_unaryfunc, - "float(x)"), - NBSLOT("__index__", nb_index, slot_nb_index, wrap_unaryfunc, - "x[y:z] <==> x[y.__index__():z.__index__()]"), - IBSLOT("__iadd__", nb_inplace_add, slot_nb_inplace_add, - wrap_binaryfunc, "+"), - IBSLOT("__isub__", nb_inplace_subtract, slot_nb_inplace_subtract, - wrap_binaryfunc, "-"), - IBSLOT("__imul__", nb_inplace_multiply, slot_nb_inplace_multiply, - wrap_binaryfunc, "*"), - IBSLOT("__imod__", nb_inplace_remainder, slot_nb_inplace_remainder, - wrap_binaryfunc, "%"), - IBSLOT("__ipow__", nb_inplace_power, slot_nb_inplace_power, - wrap_binaryfunc, "**"), - IBSLOT("__ilshift__", nb_inplace_lshift, slot_nb_inplace_lshift, - wrap_binaryfunc, "<<"), - IBSLOT("__irshift__", nb_inplace_rshift, slot_nb_inplace_rshift, - wrap_binaryfunc, ">>"), - IBSLOT("__iand__", nb_inplace_and, slot_nb_inplace_and, - wrap_binaryfunc, "&"), - IBSLOT("__ixor__", nb_inplace_xor, slot_nb_inplace_xor, - wrap_binaryfunc, "^"), - IBSLOT("__ior__", nb_inplace_or, slot_nb_inplace_or, - wrap_binaryfunc, "|"), - BINSLOT("__floordiv__", nb_floor_divide, slot_nb_floor_divide, "//"), - RBINSLOT("__rfloordiv__", nb_floor_divide, slot_nb_floor_divide, "//"), - BINSLOT("__truediv__", nb_true_divide, slot_nb_true_divide, "/"), - RBINSLOT("__rtruediv__", nb_true_divide, slot_nb_true_divide, "/"), - IBSLOT("__ifloordiv__", nb_inplace_floor_divide, - slot_nb_inplace_floor_divide, wrap_binaryfunc, "//"), - IBSLOT("__itruediv__", nb_inplace_true_divide, - slot_nb_inplace_true_divide, wrap_binaryfunc, "/"), - - TPSLOT("__str__", tp_str, slot_tp_str, wrap_unaryfunc, - "x.__str__() <==> str(x)"), - TPSLOT("__repr__", tp_repr, slot_tp_repr, wrap_unaryfunc, - "x.__repr__() <==> repr(x)"), - TPSLOT("__hash__", tp_hash, slot_tp_hash, wrap_hashfunc, - "x.__hash__() <==> hash(x)"), - FLSLOT("__call__", tp_call, slot_tp_call, (wrapperfunc)wrap_call, - "x.__call__(...) <==> x(...)", PyWrapperFlag_KEYWORDS), - TPSLOT("__getattribute__", tp_getattro, slot_tp_getattr_hook, - wrap_binaryfunc, "x.__getattribute__('name') <==> x.name"), - TPSLOT("__getattribute__", tp_getattr, NULL, NULL, ""), - TPSLOT("__getattr__", tp_getattro, slot_tp_getattr_hook, NULL, ""), - TPSLOT("__getattr__", tp_getattr, NULL, NULL, ""), - TPSLOT("__setattr__", tp_setattro, slot_tp_setattro, wrap_setattr, - "x.__setattr__('name', value) <==> x.name = value"), - TPSLOT("__setattr__", tp_setattr, NULL, NULL, ""), - TPSLOT("__delattr__", tp_setattro, slot_tp_setattro, wrap_delattr, - "x.__delattr__('name') <==> del x.name"), - TPSLOT("__delattr__", tp_setattr, NULL, NULL, ""), - TPSLOT("__lt__", tp_richcompare, slot_tp_richcompare, richcmp_lt, - "x.__lt__(y) <==> x<y"), - TPSLOT("__le__", tp_richcompare, slot_tp_richcompare, richcmp_le, - "x.__le__(y) <==> x<=y"), - TPSLOT("__eq__", tp_richcompare, slot_tp_richcompare, richcmp_eq, - "x.__eq__(y) <==> x==y"), - TPSLOT("__ne__", tp_richcompare, slot_tp_richcompare, richcmp_ne, - "x.__ne__(y) <==> x!=y"), - TPSLOT("__gt__", tp_richcompare, slot_tp_richcompare, richcmp_gt, - "x.__gt__(y) <==> x>y"), - TPSLOT("__ge__", tp_richcompare, slot_tp_richcompare, richcmp_ge, - "x.__ge__(y) <==> x>=y"), - TPSLOT("__iter__", tp_iter, slot_tp_iter, wrap_unaryfunc, - "x.__iter__() <==> iter(x)"), - TPSLOT("__next__", tp_iternext, slot_tp_iternext, wrap_next, - "x.__next__() <==> next(x)"), - TPSLOT("__get__", tp_descr_get, slot_tp_descr_get, wrap_descr_get, - "descr.__get__(obj[, type]) -> value"), - TPSLOT("__set__", tp_descr_set, slot_tp_descr_set, wrap_descr_set, - "descr.__set__(obj, value)"), - TPSLOT("__delete__", tp_descr_set, slot_tp_descr_set, - wrap_descr_delete, "descr.__delete__(obj)"), - FLSLOT("__init__", tp_init, slot_tp_init, (wrapperfunc)wrap_init, - "x.__init__(...) initializes x; " - "see x.__class__.__doc__ for signature", - PyWrapperFlag_KEYWORDS), - TPSLOT("__new__", tp_new, slot_tp_new, NULL, ""), - TPSLOT("__del__", tp_del, slot_tp_del, NULL, ""), - {NULL} + SQSLOT("__len__", sq_length, slot_sq_length, wrap_lenfunc, + "x.__len__() <==> len(x)"), + /* Heap types defining __add__/__mul__ have sq_concat/sq_repeat == NULL. + The logic in abstract.c always falls back to nb_add/nb_multiply in + this case. Defining both the nb_* and the sq_* slots to call the + user-defined methods has unexpected side-effects, as shown by + test_descr.notimplemented() */ + SQSLOT("__add__", sq_concat, NULL, wrap_binaryfunc, + "x.__add__(y) <==> x+y"), + SQSLOT("__mul__", sq_repeat, NULL, wrap_indexargfunc, + "x.__mul__(n) <==> x*n"), + SQSLOT("__rmul__", sq_repeat, NULL, wrap_indexargfunc, + "x.__rmul__(n) <==> n*x"), + SQSLOT("__getitem__", sq_item, slot_sq_item, wrap_sq_item, + "x.__getitem__(y) <==> x[y]"), + SQSLOT("__setitem__", sq_ass_item, slot_sq_ass_item, wrap_sq_setitem, + "x.__setitem__(i, y) <==> x[i]=y"), + SQSLOT("__delitem__", sq_ass_item, slot_sq_ass_item, wrap_sq_delitem, + "x.__delitem__(y) <==> del x[y]"), + SQSLOT("__contains__", sq_contains, slot_sq_contains, wrap_objobjproc, + "x.__contains__(y) <==> y in x"), + SQSLOT("__iadd__", sq_inplace_concat, NULL, + wrap_binaryfunc, "x.__iadd__(y) <==> x+=y"), + SQSLOT("__imul__", sq_inplace_repeat, NULL, + wrap_indexargfunc, "x.__imul__(y) <==> x*=y"), + + MPSLOT("__len__", mp_length, slot_mp_length, wrap_lenfunc, + "x.__len__() <==> len(x)"), + MPSLOT("__getitem__", mp_subscript, slot_mp_subscript, + wrap_binaryfunc, + "x.__getitem__(y) <==> x[y]"), + MPSLOT("__setitem__", mp_ass_subscript, slot_mp_ass_subscript, + wrap_objobjargproc, + "x.__setitem__(i, y) <==> x[i]=y"), + MPSLOT("__delitem__", mp_ass_subscript, slot_mp_ass_subscript, + wrap_delitem, + "x.__delitem__(y) <==> del x[y]"), + + BINSLOT("__add__", nb_add, slot_nb_add, + "+"), + RBINSLOT("__radd__", nb_add, slot_nb_add, + "+"), + BINSLOT("__sub__", nb_subtract, slot_nb_subtract, + "-"), + RBINSLOT("__rsub__", nb_subtract, slot_nb_subtract, + "-"), + BINSLOT("__mul__", nb_multiply, slot_nb_multiply, + "*"), + RBINSLOT("__rmul__", nb_multiply, slot_nb_multiply, + "*"), + BINSLOT("__mod__", nb_remainder, slot_nb_remainder, + "%"), + RBINSLOT("__rmod__", nb_remainder, slot_nb_remainder, + "%"), + BINSLOTNOTINFIX("__divmod__", nb_divmod, slot_nb_divmod, + "divmod(x, y)"), + RBINSLOTNOTINFIX("__rdivmod__", nb_divmod, slot_nb_divmod, + "divmod(y, x)"), + NBSLOT("__pow__", nb_power, slot_nb_power, wrap_ternaryfunc, + "x.__pow__(y[, z]) <==> pow(x, y[, z])"), + NBSLOT("__rpow__", nb_power, slot_nb_power, wrap_ternaryfunc_r, + "y.__rpow__(x[, z]) <==> pow(x, y[, z])"), + UNSLOT("__neg__", nb_negative, slot_nb_negative, wrap_unaryfunc, "-x"), + UNSLOT("__pos__", nb_positive, slot_nb_positive, wrap_unaryfunc, "+x"), + UNSLOT("__abs__", nb_absolute, slot_nb_absolute, wrap_unaryfunc, + "abs(x)"), + UNSLOT("__bool__", nb_bool, slot_nb_bool, wrap_inquirypred, + "x != 0"), + UNSLOT("__invert__", nb_invert, slot_nb_invert, wrap_unaryfunc, "~x"), + BINSLOT("__lshift__", nb_lshift, slot_nb_lshift, "<<"), + RBINSLOT("__rlshift__", nb_lshift, slot_nb_lshift, "<<"), + BINSLOT("__rshift__", nb_rshift, slot_nb_rshift, ">>"), + RBINSLOT("__rrshift__", nb_rshift, slot_nb_rshift, ">>"), + BINSLOT("__and__", nb_and, slot_nb_and, "&"), + RBINSLOT("__rand__", nb_and, slot_nb_and, "&"), + BINSLOT("__xor__", nb_xor, slot_nb_xor, "^"), + RBINSLOT("__rxor__", nb_xor, slot_nb_xor, "^"), + BINSLOT("__or__", nb_or, slot_nb_or, "|"), + RBINSLOT("__ror__", nb_or, slot_nb_or, "|"), + UNSLOT("__int__", nb_int, slot_nb_int, wrap_unaryfunc, + "int(x)"), + UNSLOT("__float__", nb_float, slot_nb_float, wrap_unaryfunc, + "float(x)"), + NBSLOT("__index__", nb_index, slot_nb_index, wrap_unaryfunc, + "x[y:z] <==> x[y.__index__():z.__index__()]"), + IBSLOT("__iadd__", nb_inplace_add, slot_nb_inplace_add, + wrap_binaryfunc, "+"), + IBSLOT("__isub__", nb_inplace_subtract, slot_nb_inplace_subtract, + wrap_binaryfunc, "-"), + IBSLOT("__imul__", nb_inplace_multiply, slot_nb_inplace_multiply, + wrap_binaryfunc, "*"), + IBSLOT("__imod__", nb_inplace_remainder, slot_nb_inplace_remainder, + wrap_binaryfunc, "%"), + IBSLOT("__ipow__", nb_inplace_power, slot_nb_inplace_power, + wrap_binaryfunc, "**"), + IBSLOT("__ilshift__", nb_inplace_lshift, slot_nb_inplace_lshift, + wrap_binaryfunc, "<<"), + IBSLOT("__irshift__", nb_inplace_rshift, slot_nb_inplace_rshift, + wrap_binaryfunc, ">>"), + IBSLOT("__iand__", nb_inplace_and, slot_nb_inplace_and, + wrap_binaryfunc, "&"), + IBSLOT("__ixor__", nb_inplace_xor, slot_nb_inplace_xor, + wrap_binaryfunc, "^"), + IBSLOT("__ior__", nb_inplace_or, slot_nb_inplace_or, + wrap_binaryfunc, "|"), + BINSLOT("__floordiv__", nb_floor_divide, slot_nb_floor_divide, "//"), + RBINSLOT("__rfloordiv__", nb_floor_divide, slot_nb_floor_divide, "//"), + BINSLOT("__truediv__", nb_true_divide, slot_nb_true_divide, "/"), + RBINSLOT("__rtruediv__", nb_true_divide, slot_nb_true_divide, "/"), + IBSLOT("__ifloordiv__", nb_inplace_floor_divide, + slot_nb_inplace_floor_divide, wrap_binaryfunc, "//"), + IBSLOT("__itruediv__", nb_inplace_true_divide, + slot_nb_inplace_true_divide, wrap_binaryfunc, "/"), + + TPSLOT("__str__", tp_str, slot_tp_str, wrap_unaryfunc, + "x.__str__() <==> str(x)"), + TPSLOT("__repr__", tp_repr, slot_tp_repr, wrap_unaryfunc, + "x.__repr__() <==> repr(x)"), + TPSLOT("__hash__", tp_hash, slot_tp_hash, wrap_hashfunc, + "x.__hash__() <==> hash(x)"), + FLSLOT("__call__", tp_call, slot_tp_call, (wrapperfunc)wrap_call, + "x.__call__(...) <==> x(...)", PyWrapperFlag_KEYWORDS), + TPSLOT("__getattribute__", tp_getattro, slot_tp_getattr_hook, + wrap_binaryfunc, "x.__getattribute__('name') <==> x.name"), + TPSLOT("__getattribute__", tp_getattr, NULL, NULL, ""), + TPSLOT("__getattr__", tp_getattro, slot_tp_getattr_hook, NULL, ""), + TPSLOT("__getattr__", tp_getattr, NULL, NULL, ""), + TPSLOT("__setattr__", tp_setattro, slot_tp_setattro, wrap_setattr, + "x.__setattr__('name', value) <==> x.name = value"), + TPSLOT("__setattr__", tp_setattr, NULL, NULL, ""), + TPSLOT("__delattr__", tp_setattro, slot_tp_setattro, wrap_delattr, + "x.__delattr__('name') <==> del x.name"), + TPSLOT("__delattr__", tp_setattr, NULL, NULL, ""), + TPSLOT("__lt__", tp_richcompare, slot_tp_richcompare, richcmp_lt, + "x.__lt__(y) <==> x<y"), + TPSLOT("__le__", tp_richcompare, slot_tp_richcompare, richcmp_le, + "x.__le__(y) <==> x<=y"), + TPSLOT("__eq__", tp_richcompare, slot_tp_richcompare, richcmp_eq, + "x.__eq__(y) <==> x==y"), + TPSLOT("__ne__", tp_richcompare, slot_tp_richcompare, richcmp_ne, + "x.__ne__(y) <==> x!=y"), + TPSLOT("__gt__", tp_richcompare, slot_tp_richcompare, richcmp_gt, + "x.__gt__(y) <==> x>y"), + TPSLOT("__ge__", tp_richcompare, slot_tp_richcompare, richcmp_ge, + "x.__ge__(y) <==> x>=y"), + TPSLOT("__iter__", tp_iter, slot_tp_iter, wrap_unaryfunc, + "x.__iter__() <==> iter(x)"), + TPSLOT("__next__", tp_iternext, slot_tp_iternext, wrap_next, + "x.__next__() <==> next(x)"), + TPSLOT("__get__", tp_descr_get, slot_tp_descr_get, wrap_descr_get, + "descr.__get__(obj[, type]) -> value"), + TPSLOT("__set__", tp_descr_set, slot_tp_descr_set, wrap_descr_set, + "descr.__set__(obj, value)"), + TPSLOT("__delete__", tp_descr_set, slot_tp_descr_set, + wrap_descr_delete, "descr.__delete__(obj)"), + FLSLOT("__init__", tp_init, slot_tp_init, (wrapperfunc)wrap_init, + "x.__init__(...) initializes x; " + "see x.__class__.__doc__ for signature", + PyWrapperFlag_KEYWORDS), + TPSLOT("__new__", tp_new, slot_tp_new, NULL, ""), + TPSLOT("__del__", tp_del, slot_tp_del, NULL, ""), + {NULL} }; /* Given a type pointer and an offset gotten from a slotdef entry, return a - pointer to the actual slot. This is not quite the same as simply adding + pointer to the actual slot. This is not quite the same as simply adding the offset to the type pointer, since it takes care to indirect through the proper indirection pointer (as_buffer, etc.); it returns NULL if the indirection pointer is NULL. */ static void ** slotptr(PyTypeObject *type, int ioffset) { - char *ptr; - long offset = ioffset; - - /* Note: this depends on the order of the members of PyHeapTypeObject! */ - assert(offset >= 0); - assert((size_t)offset < offsetof(PyHeapTypeObject, as_buffer)); - if ((size_t)offset >= offsetof(PyHeapTypeObject, as_sequence)) { - ptr = (char *)type->tp_as_sequence; - offset -= offsetof(PyHeapTypeObject, as_sequence); - } - else if ((size_t)offset >= offsetof(PyHeapTypeObject, as_mapping)) { - ptr = (char *)type->tp_as_mapping; - offset -= offsetof(PyHeapTypeObject, as_mapping); - } - else if ((size_t)offset >= offsetof(PyHeapTypeObject, as_number)) { - ptr = (char *)type->tp_as_number; - offset -= offsetof(PyHeapTypeObject, as_number); - } - else { - ptr = (char *)type; - } - if (ptr != NULL) - ptr += offset; - return (void **)ptr; + char *ptr; + long offset = ioffset; + + /* Note: this depends on the order of the members of PyHeapTypeObject! */ + assert(offset >= 0); + assert((size_t)offset < offsetof(PyHeapTypeObject, as_buffer)); + if ((size_t)offset >= offsetof(PyHeapTypeObject, as_sequence)) { + ptr = (char *)type->tp_as_sequence; + offset -= offsetof(PyHeapTypeObject, as_sequence); + } + else if ((size_t)offset >= offsetof(PyHeapTypeObject, as_mapping)) { + ptr = (char *)type->tp_as_mapping; + offset -= offsetof(PyHeapTypeObject, as_mapping); + } + else if ((size_t)offset >= offsetof(PyHeapTypeObject, as_number)) { + ptr = (char *)type->tp_as_number; + offset -= offsetof(PyHeapTypeObject, as_number); + } + else { + ptr = (char *)type; + } + if (ptr != NULL) + ptr += offset; + return (void **)ptr; } /* Length of array of slotdef pointers used to store slots with the @@ -5584,37 +5584,37 @@ slotptr(PyTypeObject *type, int ioffset) static void ** resolve_slotdups(PyTypeObject *type, PyObject *name) { - /* XXX Maybe this could be optimized more -- but is it worth it? */ - - /* pname and ptrs act as a little cache */ - static PyObject *pname; - static slotdef *ptrs[MAX_EQUIV]; - slotdef *p, **pp; - void **res, **ptr; - - if (pname != name) { - /* Collect all slotdefs that match name into ptrs. */ - pname = name; - pp = ptrs; - for (p = slotdefs; p->name_strobj; p++) { - if (p->name_strobj == name) - *pp++ = p; - } - *pp = NULL; - } - - /* Look in all matching slots of the type; if exactly one of these has - a filled-in slot, return its value. Otherwise return NULL. */ - res = NULL; - for (pp = ptrs; *pp; pp++) { - ptr = slotptr(type, (*pp)->offset); - if (ptr == NULL || *ptr == NULL) - continue; - if (res != NULL) - return NULL; - res = ptr; - } - return res; + /* XXX Maybe this could be optimized more -- but is it worth it? */ + + /* pname and ptrs act as a little cache */ + static PyObject *pname; + static slotdef *ptrs[MAX_EQUIV]; + slotdef *p, **pp; + void **res, **ptr; + + if (pname != name) { + /* Collect all slotdefs that match name into ptrs. */ + pname = name; + pp = ptrs; + for (p = slotdefs; p->name_strobj; p++) { + if (p->name_strobj == name) + *pp++ = p; + } + *pp = NULL; + } + + /* Look in all matching slots of the type; if exactly one of these has + a filled-in slot, return its value. Otherwise return NULL. */ + res = NULL; + for (pp = ptrs; *pp; pp++) { + ptr = slotptr(type, (*pp)->offset); + if (ptr == NULL || *ptr == NULL) + continue; + if (res != NULL) + return NULL; + res = ptr; + } + return res; } /* Common code for update_slots_callback() and fixup_slot_dispatchers(). This @@ -5626,81 +5626,81 @@ resolve_slotdups(PyTypeObject *type, PyObject *name) static slotdef * update_one_slot(PyTypeObject *type, slotdef *p) { - PyObject *descr; - PyWrapperDescrObject *d; - void *generic = NULL, *specific = NULL; - int use_generic = 0; - int offset = p->offset; - void **ptr = slotptr(type, offset); - - if (ptr == NULL) { - do { - ++p; - } while (p->offset == offset); - return p; - } - do { - descr = _PyType_Lookup(type, p->name_strobj); - if (descr == NULL) { - if (ptr == (void**)&type->tp_iternext) { - specific = _PyObject_NextNotImplemented; - } - continue; - } - if (Py_TYPE(descr) == &PyWrapperDescr_Type) { - void **tptr = resolve_slotdups(type, p->name_strobj); - if (tptr == NULL || tptr == ptr) - generic = p->function; - d = (PyWrapperDescrObject *)descr; - if (d->d_base->wrapper == p->wrapper && - PyType_IsSubtype(type, d->d_type)) - { - if (specific == NULL || - specific == d->d_wrapped) - specific = d->d_wrapped; - else - use_generic = 1; - } - } - else if (Py_TYPE(descr) == &PyCFunction_Type && - PyCFunction_GET_FUNCTION(descr) == - (PyCFunction)tp_new_wrapper && - ptr == (void**)&type->tp_new) - { - /* The __new__ wrapper is not a wrapper descriptor, - so must be special-cased differently. - If we don't do this, creating an instance will - always use slot_tp_new which will look up - __new__ in the MRO which will call tp_new_wrapper - which will look through the base classes looking - for a static base and call its tp_new (usually - PyType_GenericNew), after performing various - sanity checks and constructing a new argument - list. Cut all that nonsense short -- this speeds - up instance creation tremendously. */ - specific = (void *)type->tp_new; - /* XXX I'm not 100% sure that there isn't a hole - in this reasoning that requires additional - sanity checks. I'll buy the first person to - point out a bug in this reasoning a beer. */ - } - else if (descr == Py_None && - ptr == (void**)&type->tp_hash) { - /* We specifically allow __hash__ to be set to None - to prevent inheritance of the default - implementation from object.__hash__ */ - specific = PyObject_HashNotImplemented; - } - else { - use_generic = 1; - generic = p->function; - } - } while ((++p)->offset == offset); - if (specific && !use_generic) - *ptr = specific; - else - *ptr = generic; - return p; + PyObject *descr; + PyWrapperDescrObject *d; + void *generic = NULL, *specific = NULL; + int use_generic = 0; + int offset = p->offset; + void **ptr = slotptr(type, offset); + + if (ptr == NULL) { + do { + ++p; + } while (p->offset == offset); + return p; + } + do { + descr = _PyType_Lookup(type, p->name_strobj); + if (descr == NULL) { + if (ptr == (void**)&type->tp_iternext) { + specific = _PyObject_NextNotImplemented; + } + continue; + } + if (Py_TYPE(descr) == &PyWrapperDescr_Type) { + void **tptr = resolve_slotdups(type, p->name_strobj); + if (tptr == NULL || tptr == ptr) + generic = p->function; + d = (PyWrapperDescrObject *)descr; + if (d->d_base->wrapper == p->wrapper && + PyType_IsSubtype(type, d->d_type)) + { + if (specific == NULL || + specific == d->d_wrapped) + specific = d->d_wrapped; + else + use_generic = 1; + } + } + else if (Py_TYPE(descr) == &PyCFunction_Type && + PyCFunction_GET_FUNCTION(descr) == + (PyCFunction)tp_new_wrapper && + ptr == (void**)&type->tp_new) + { + /* The __new__ wrapper is not a wrapper descriptor, + so must be special-cased differently. + If we don't do this, creating an instance will + always use slot_tp_new which will look up + __new__ in the MRO which will call tp_new_wrapper + which will look through the base classes looking + for a static base and call its tp_new (usually + PyType_GenericNew), after performing various + sanity checks and constructing a new argument + list. Cut all that nonsense short -- this speeds + up instance creation tremendously. */ + specific = (void *)type->tp_new; + /* XXX I'm not 100% sure that there isn't a hole + in this reasoning that requires additional + sanity checks. I'll buy the first person to + point out a bug in this reasoning a beer. */ + } + else if (descr == Py_None && + ptr == (void**)&type->tp_hash) { + /* We specifically allow __hash__ to be set to None + to prevent inheritance of the default + implementation from object.__hash__ */ + specific = PyObject_HashNotImplemented; + } + else { + use_generic = 1; + generic = p->function; + } + } while ((++p)->offset == offset); + if (specific && !use_generic) + *ptr = specific; + else + *ptr = generic; + return p; } /* In the type, update the slots whose slotdefs are gathered in the pp array. @@ -5708,11 +5708,11 @@ update_one_slot(PyTypeObject *type, slotdef *p) static int update_slots_callback(PyTypeObject *type, void *data) { - slotdef **pp = (slotdef **)data; + slotdef **pp = (slotdef **)data; - for (; *pp; pp++) - update_one_slot(type, *pp); - return 0; + for (; *pp; pp++) + update_one_slot(type, *pp); + return 0; } /* Comparison function for qsort() to compare slotdefs by their offset, and @@ -5720,14 +5720,14 @@ update_slots_callback(PyTypeObject *type, void *data) static int slotdef_cmp(const void *aa, const void *bb) { - const slotdef *a = (const slotdef *)aa, *b = (const slotdef *)bb; - int c = a->offset - b->offset; - if (c != 0) - return c; - else - /* Cannot use a-b, as this gives off_t, - which may lose precision when converted to int. */ - return (a > b) ? 1 : (a < b) ? -1 : 0; + const slotdef *a = (const slotdef *)aa, *b = (const slotdef *)bb; + int c = a->offset - b->offset; + if (c != 0) + return c; + else + /* Cannot use a-b, as this gives off_t, + which may lose precision when converted to int. */ + return (a > b) ? 1 : (a < b) ? -1 : 0; } /* Initialize the slotdefs table by adding interned string objects for the @@ -5735,56 +5735,56 @@ slotdef_cmp(const void *aa, const void *bb) static void init_slotdefs(void) { - slotdef *p; - static int initialized = 0; + slotdef *p; + static int initialized = 0; - if (initialized) - return; - for (p = slotdefs; p->name; p++) { - p->name_strobj = PyUnicode_InternFromString(p->name); - if (!p->name_strobj) - Py_FatalError("Out of memory interning slotdef names"); - } - qsort((void *)slotdefs, (size_t)(p-slotdefs), sizeof(slotdef), - slotdef_cmp); - initialized = 1; + if (initialized) + return; + for (p = slotdefs; p->name; p++) { + p->name_strobj = PyUnicode_InternFromString(p->name); + if (!p->name_strobj) + Py_FatalError("Out of memory interning slotdef names"); + } + qsort((void *)slotdefs, (size_t)(p-slotdefs), sizeof(slotdef), + slotdef_cmp); + initialized = 1; } /* Update the slots after assignment to a class (type) attribute. */ static int update_slot(PyTypeObject *type, PyObject *name) { - slotdef *ptrs[MAX_EQUIV]; - slotdef *p; - slotdef **pp; - int offset; - - /* Clear the VALID_VERSION flag of 'type' and all its - subclasses. This could possibly be unified with the - update_subclasses() recursion below, but carefully: - they each have their own conditions on which to stop - recursing into subclasses. */ - PyType_Modified(type); - - init_slotdefs(); - pp = ptrs; - for (p = slotdefs; p->name; p++) { - /* XXX assume name is interned! */ - if (p->name_strobj == name) - *pp++ = p; - } - *pp = NULL; - for (pp = ptrs; *pp; pp++) { - p = *pp; - offset = p->offset; - while (p > slotdefs && (p-1)->offset == offset) - --p; - *pp = p; - } - if (ptrs[0] == NULL) - return 0; /* Not an attribute that affects any slots */ - return update_subclasses(type, name, - update_slots_callback, (void *)ptrs); + slotdef *ptrs[MAX_EQUIV]; + slotdef *p; + slotdef **pp; + int offset; + + /* Clear the VALID_VERSION flag of 'type' and all its + subclasses. This could possibly be unified with the + update_subclasses() recursion below, but carefully: + they each have their own conditions on which to stop + recursing into subclasses. */ + PyType_Modified(type); + + init_slotdefs(); + pp = ptrs; + for (p = slotdefs; p->name; p++) { + /* XXX assume name is interned! */ + if (p->name_strobj == name) + *pp++ = p; + } + *pp = NULL; + for (pp = ptrs; *pp; pp++) { + p = *pp; + offset = p->offset; + while (p > slotdefs && (p-1)->offset == offset) + --p; + *pp = p; + } + if (ptrs[0] == NULL) + return 0; /* Not an attribute that affects any slots */ + return update_subclasses(type, name, + update_slots_callback, (void *)ptrs); } /* Store the proper functions in the slot dispatches at class (type) @@ -5793,23 +5793,23 @@ update_slot(PyTypeObject *type, PyObject *name) static void fixup_slot_dispatchers(PyTypeObject *type) { - slotdef *p; + slotdef *p; - init_slotdefs(); - for (p = slotdefs; p->name; ) - p = update_one_slot(type, p); + init_slotdefs(); + for (p = slotdefs; p->name; ) + p = update_one_slot(type, p); } static void update_all_slots(PyTypeObject* type) { - slotdef *p; + slotdef *p; - init_slotdefs(); - for (p = slotdefs; p->name; p++) { - /* update_slot returns int but can't actually fail */ - update_slot(type, p->name_strobj); - } + init_slotdefs(); + for (p = slotdefs; p->name; p++) { + /* update_slot returns int but can't actually fail */ + update_slot(type, p->name_strobj); + } } /* recurse_down_subclasses() and update_subclasses() are mutually @@ -5818,56 +5818,56 @@ update_all_slots(PyTypeObject* type) static int update_subclasses(PyTypeObject *type, PyObject *name, - update_callback callback, void *data) + update_callback callback, void *data) { - if (callback(type, data) < 0) - return -1; - return recurse_down_subclasses(type, name, callback, data); + if (callback(type, data) < 0) + return -1; + return recurse_down_subclasses(type, name, callback, data); } static int recurse_down_subclasses(PyTypeObject *type, PyObject *name, - update_callback callback, void *data) -{ - PyTypeObject *subclass; - PyObject *ref, *subclasses, *dict; - Py_ssize_t i, n; - - subclasses = type->tp_subclasses; - if (subclasses == NULL) - return 0; - assert(PyList_Check(subclasses)); - n = PyList_GET_SIZE(subclasses); - for (i = 0; i < n; i++) { - ref = PyList_GET_ITEM(subclasses, i); - assert(PyWeakref_CheckRef(ref)); - subclass = (PyTypeObject *)PyWeakref_GET_OBJECT(ref); - assert(subclass != NULL); - if ((PyObject *)subclass == Py_None) - continue; - assert(PyType_Check(subclass)); - /* Avoid recursing down into unaffected classes */ - dict = subclass->tp_dict; - if (dict != NULL && PyDict_Check(dict) && - PyDict_GetItem(dict, name) != NULL) - continue; - if (update_subclasses(subclass, name, callback, data) < 0) - return -1; - } - return 0; + update_callback callback, void *data) +{ + PyTypeObject *subclass; + PyObject *ref, *subclasses, *dict; + Py_ssize_t i, n; + + subclasses = type->tp_subclasses; + if (subclasses == NULL) + return 0; + assert(PyList_Check(subclasses)); + n = PyList_GET_SIZE(subclasses); + for (i = 0; i < n; i++) { + ref = PyList_GET_ITEM(subclasses, i); + assert(PyWeakref_CheckRef(ref)); + subclass = (PyTypeObject *)PyWeakref_GET_OBJECT(ref); + assert(subclass != NULL); + if ((PyObject *)subclass == Py_None) + continue; + assert(PyType_Check(subclass)); + /* Avoid recursing down into unaffected classes */ + dict = subclass->tp_dict; + if (dict != NULL && PyDict_Check(dict) && + PyDict_GetItem(dict, name) != NULL) + continue; + if (update_subclasses(subclass, name, callback, data) < 0) + return -1; + } + return 0; } /* This function is called by PyType_Ready() to populate the type's dictionary with method descriptors for function slots. For each function slot (like tp_repr) that's defined in the type, one or more corresponding descriptors are added in the type's tp_dict dictionary - under the appropriate name (like __repr__). Some function slots + under the appropriate name (like __repr__). Some function slots cause more than one descriptor to be added (for example, the nb_add slot adds both __add__ and __radd__ descriptors) and some function slots compete for the same descriptor (for example both sq_item and mp_subscript generate a __getitem__ descriptor). - In the latter case, the first slotdef entry encoutered wins. Since + In the latter case, the first slotdef entry encoutered wins. Since slotdef entries are sorted by the offset of the slot in the PyHeapTypeObject, this gives us some control over disambiguating between competing slots: the members of PyHeapTypeObject are listed @@ -5890,344 +5890,344 @@ recurse_down_subclasses(PyTypeObject *type, PyObject *name, static int add_operators(PyTypeObject *type) { - PyObject *dict = type->tp_dict; - slotdef *p; - PyObject *descr; - void **ptr; - - init_slotdefs(); - for (p = slotdefs; p->name; p++) { - if (p->wrapper == NULL) - continue; - ptr = slotptr(type, p->offset); - if (!ptr || !*ptr) - continue; - if (PyDict_GetItem(dict, p->name_strobj)) - continue; - if (*ptr == PyObject_HashNotImplemented) { - /* Classes may prevent the inheritance of the tp_hash - slot by storing PyObject_HashNotImplemented in it. Make it - visible as a None value for the __hash__ attribute. */ - if (PyDict_SetItem(dict, p->name_strobj, Py_None) < 0) - return -1; - } - else { - descr = PyDescr_NewWrapper(type, p, *ptr); - if (descr == NULL) - return -1; - if (PyDict_SetItem(dict, p->name_strobj, descr) < 0) - return -1; - Py_DECREF(descr); - } - } - if (type->tp_new != NULL) { - if (add_tp_new_wrapper(type) < 0) - return -1; - } - return 0; + PyObject *dict = type->tp_dict; + slotdef *p; + PyObject *descr; + void **ptr; + + init_slotdefs(); + for (p = slotdefs; p->name; p++) { + if (p->wrapper == NULL) + continue; + ptr = slotptr(type, p->offset); + if (!ptr || !*ptr) + continue; + if (PyDict_GetItem(dict, p->name_strobj)) + continue; + if (*ptr == PyObject_HashNotImplemented) { + /* Classes may prevent the inheritance of the tp_hash + slot by storing PyObject_HashNotImplemented in it. Make it + visible as a None value for the __hash__ attribute. */ + if (PyDict_SetItem(dict, p->name_strobj, Py_None) < 0) + return -1; + } + else { + descr = PyDescr_NewWrapper(type, p, *ptr); + if (descr == NULL) + return -1; + if (PyDict_SetItem(dict, p->name_strobj, descr) < 0) + return -1; + Py_DECREF(descr); + } + } + if (type->tp_new != NULL) { + if (add_tp_new_wrapper(type) < 0) + return -1; + } + return 0; } /* Cooperative 'super' */ typedef struct { - PyObject_HEAD - PyTypeObject *type; - PyObject *obj; - PyTypeObject *obj_type; + PyObject_HEAD + PyTypeObject *type; + PyObject *obj; + PyTypeObject *obj_type; } superobject; static PyMemberDef super_members[] = { - {"__thisclass__", T_OBJECT, offsetof(superobject, type), READONLY, - "the class invoking super()"}, - {"__self__", T_OBJECT, offsetof(superobject, obj), READONLY, - "the instance invoking super(); may be None"}, - {"__self_class__", T_OBJECT, offsetof(superobject, obj_type), READONLY, - "the type of the instance invoking super(); may be None"}, - {0} + {"__thisclass__", T_OBJECT, offsetof(superobject, type), READONLY, + "the class invoking super()"}, + {"__self__", T_OBJECT, offsetof(superobject, obj), READONLY, + "the instance invoking super(); may be None"}, + {"__self_class__", T_OBJECT, offsetof(superobject, obj_type), READONLY, + "the type of the instance invoking super(); may be None"}, + {0} }; static void super_dealloc(PyObject *self) { - superobject *su = (superobject *)self; + superobject *su = (superobject *)self; - _PyObject_GC_UNTRACK(self); - Py_XDECREF(su->obj); - Py_XDECREF(su->type); - Py_XDECREF(su->obj_type); - Py_TYPE(self)->tp_free(self); + _PyObject_GC_UNTRACK(self); + Py_XDECREF(su->obj); + Py_XDECREF(su->type); + Py_XDECREF(su->obj_type); + Py_TYPE(self)->tp_free(self); } static PyObject * super_repr(PyObject *self) { - superobject *su = (superobject *)self; + superobject *su = (superobject *)self; - if (su->obj_type) - return PyUnicode_FromFormat( - "<super: <class '%s'>, <%s object>>", - su->type ? su->type->tp_name : "NULL", - su->obj_type->tp_name); - else - return PyUnicode_FromFormat( - "<super: <class '%s'>, NULL>", - su->type ? su->type->tp_name : "NULL"); + if (su->obj_type) + return PyUnicode_FromFormat( + "<super: <class '%s'>, <%s object>>", + su->type ? su->type->tp_name : "NULL", + su->obj_type->tp_name); + else + return PyUnicode_FromFormat( + "<super: <class '%s'>, NULL>", + su->type ? su->type->tp_name : "NULL"); } static PyObject * super_getattro(PyObject *self, PyObject *name) { - superobject *su = (superobject *)self; - int skip = su->obj_type == NULL; - - if (!skip) { - /* We want __class__ to return the class of the super object - (i.e. super, or a subclass), not the class of su->obj. */ - skip = (PyUnicode_Check(name) && - PyUnicode_GET_SIZE(name) == 9 && - PyUnicode_CompareWithASCIIString(name, "__class__") == 0); - } - - if (!skip) { - PyObject *mro, *res, *tmp, *dict; - PyTypeObject *starttype; - descrgetfunc f; - Py_ssize_t i, n; - - starttype = su->obj_type; - mro = starttype->tp_mro; - - if (mro == NULL) - n = 0; - else { - assert(PyTuple_Check(mro)); - n = PyTuple_GET_SIZE(mro); - } - for (i = 0; i < n; i++) { - if ((PyObject *)(su->type) == PyTuple_GET_ITEM(mro, i)) - break; - } - i++; - res = NULL; - for (; i < n; i++) { - tmp = PyTuple_GET_ITEM(mro, i); - if (PyType_Check(tmp)) - dict = ((PyTypeObject *)tmp)->tp_dict; - else - continue; - res = PyDict_GetItem(dict, name); - if (res != NULL) { - Py_INCREF(res); - f = Py_TYPE(res)->tp_descr_get; - if (f != NULL) { - tmp = f(res, - /* Only pass 'obj' param if - this is instance-mode super - (See SF ID #743627) - */ - (su->obj == (PyObject *) - su->obj_type - ? (PyObject *)NULL - : su->obj), - (PyObject *)starttype); - Py_DECREF(res); - res = tmp; - } - return res; - } - } - } - return PyObject_GenericGetAttr(self, name); + superobject *su = (superobject *)self; + int skip = su->obj_type == NULL; + + if (!skip) { + /* We want __class__ to return the class of the super object + (i.e. super, or a subclass), not the class of su->obj. */ + skip = (PyUnicode_Check(name) && + PyUnicode_GET_SIZE(name) == 9 && + PyUnicode_CompareWithASCIIString(name, "__class__") == 0); + } + + if (!skip) { + PyObject *mro, *res, *tmp, *dict; + PyTypeObject *starttype; + descrgetfunc f; + Py_ssize_t i, n; + + starttype = su->obj_type; + mro = starttype->tp_mro; + + if (mro == NULL) + n = 0; + else { + assert(PyTuple_Check(mro)); + n = PyTuple_GET_SIZE(mro); + } + for (i = 0; i < n; i++) { + if ((PyObject *)(su->type) == PyTuple_GET_ITEM(mro, i)) + break; + } + i++; + res = NULL; + for (; i < n; i++) { + tmp = PyTuple_GET_ITEM(mro, i); + if (PyType_Check(tmp)) + dict = ((PyTypeObject *)tmp)->tp_dict; + else + continue; + res = PyDict_GetItem(dict, name); + if (res != NULL) { + Py_INCREF(res); + f = Py_TYPE(res)->tp_descr_get; + if (f != NULL) { + tmp = f(res, + /* Only pass 'obj' param if + this is instance-mode super + (See SF ID #743627) + */ + (su->obj == (PyObject *) + su->obj_type + ? (PyObject *)NULL + : su->obj), + (PyObject *)starttype); + Py_DECREF(res); + res = tmp; + } + return res; + } + } + } + return PyObject_GenericGetAttr(self, name); } static PyTypeObject * supercheck(PyTypeObject *type, PyObject *obj) { - /* Check that a super() call makes sense. Return a type object. - - obj can be a new-style class, or an instance of one: - - - If it is a class, it must be a subclass of 'type'. This case is - used for class methods; the return value is obj. - - - If it is an instance, it must be an instance of 'type'. This is - the normal case; the return value is obj.__class__. - - But... when obj is an instance, we want to allow for the case where - Py_TYPE(obj) is not a subclass of type, but obj.__class__ is! - This will allow using super() with a proxy for obj. - */ - - /* Check for first bullet above (special case) */ - if (PyType_Check(obj) && PyType_IsSubtype((PyTypeObject *)obj, type)) { - Py_INCREF(obj); - return (PyTypeObject *)obj; - } - - /* Normal case */ - if (PyType_IsSubtype(Py_TYPE(obj), type)) { - Py_INCREF(Py_TYPE(obj)); - return Py_TYPE(obj); - } - else { - /* Try the slow way */ - static PyObject *class_str = NULL; - PyObject *class_attr; - - if (class_str == NULL) { - class_str = PyUnicode_FromString("__class__"); - if (class_str == NULL) - return NULL; - } - - class_attr = PyObject_GetAttr(obj, class_str); - - if (class_attr != NULL && - PyType_Check(class_attr) && - (PyTypeObject *)class_attr != Py_TYPE(obj)) - { - int ok = PyType_IsSubtype( - (PyTypeObject *)class_attr, type); - if (ok) - return (PyTypeObject *)class_attr; - } - - if (class_attr == NULL) - PyErr_Clear(); - else - Py_DECREF(class_attr); - } - - PyErr_SetString(PyExc_TypeError, - "super(type, obj): " - "obj must be an instance or subtype of type"); - return NULL; + /* Check that a super() call makes sense. Return a type object. + + obj can be a new-style class, or an instance of one: + + - If it is a class, it must be a subclass of 'type'. This case is + used for class methods; the return value is obj. + + - If it is an instance, it must be an instance of 'type'. This is + the normal case; the return value is obj.__class__. + + But... when obj is an instance, we want to allow for the case where + Py_TYPE(obj) is not a subclass of type, but obj.__class__ is! + This will allow using super() with a proxy for obj. + */ + + /* Check for first bullet above (special case) */ + if (PyType_Check(obj) && PyType_IsSubtype((PyTypeObject *)obj, type)) { + Py_INCREF(obj); + return (PyTypeObject *)obj; + } + + /* Normal case */ + if (PyType_IsSubtype(Py_TYPE(obj), type)) { + Py_INCREF(Py_TYPE(obj)); + return Py_TYPE(obj); + } + else { + /* Try the slow way */ + static PyObject *class_str = NULL; + PyObject *class_attr; + + if (class_str == NULL) { + class_str = PyUnicode_FromString("__class__"); + if (class_str == NULL) + return NULL; + } + + class_attr = PyObject_GetAttr(obj, class_str); + + if (class_attr != NULL && + PyType_Check(class_attr) && + (PyTypeObject *)class_attr != Py_TYPE(obj)) + { + int ok = PyType_IsSubtype( + (PyTypeObject *)class_attr, type); + if (ok) + return (PyTypeObject *)class_attr; + } + + if (class_attr == NULL) + PyErr_Clear(); + else + Py_DECREF(class_attr); + } + + PyErr_SetString(PyExc_TypeError, + "super(type, obj): " + "obj must be an instance or subtype of type"); + return NULL; } static PyObject * super_descr_get(PyObject *self, PyObject *obj, PyObject *type) { - superobject *su = (superobject *)self; - superobject *newobj; - - if (obj == NULL || obj == Py_None || su->obj != NULL) { - /* Not binding to an object, or already bound */ - Py_INCREF(self); - return self; - } - if (Py_TYPE(su) != &PySuper_Type) - /* If su is an instance of a (strict) subclass of super, - call its type */ - return PyObject_CallFunctionObjArgs((PyObject *)Py_TYPE(su), - su->type, obj, NULL); - else { - /* Inline the common case */ - PyTypeObject *obj_type = supercheck(su->type, obj); - if (obj_type == NULL) - return NULL; - newobj = (superobject *)PySuper_Type.tp_new(&PySuper_Type, - NULL, NULL); - if (newobj == NULL) - return NULL; - Py_INCREF(su->type); - Py_INCREF(obj); - newobj->type = su->type; - newobj->obj = obj; - newobj->obj_type = obj_type; - return (PyObject *)newobj; - } + superobject *su = (superobject *)self; + superobject *newobj; + + if (obj == NULL || obj == Py_None || su->obj != NULL) { + /* Not binding to an object, or already bound */ + Py_INCREF(self); + return self; + } + if (Py_TYPE(su) != &PySuper_Type) + /* If su is an instance of a (strict) subclass of super, + call its type */ + return PyObject_CallFunctionObjArgs((PyObject *)Py_TYPE(su), + su->type, obj, NULL); + else { + /* Inline the common case */ + PyTypeObject *obj_type = supercheck(su->type, obj); + if (obj_type == NULL) + return NULL; + newobj = (superobject *)PySuper_Type.tp_new(&PySuper_Type, + NULL, NULL); + if (newobj == NULL) + return NULL; + Py_INCREF(su->type); + Py_INCREF(obj); + newobj->type = su->type; + newobj->obj = obj; + newobj->obj_type = obj_type; + return (PyObject *)newobj; + } } static int super_init(PyObject *self, PyObject *args, PyObject *kwds) { - superobject *su = (superobject *)self; - PyTypeObject *type = NULL; - PyObject *obj = NULL; - PyTypeObject *obj_type = NULL; - - if (!_PyArg_NoKeywords("super", kwds)) - return -1; - if (!PyArg_ParseTuple(args, "|O!O:super", &PyType_Type, &type, &obj)) - return -1; - + superobject *su = (superobject *)self; + PyTypeObject *type = NULL; + PyObject *obj = NULL; + PyTypeObject *obj_type = NULL; + + if (!_PyArg_NoKeywords("super", kwds)) + return -1; + if (!PyArg_ParseTuple(args, "|O!O:super", &PyType_Type, &type, &obj)) + return -1; + + if (type == NULL) { + /* Call super(), without args -- fill in from __class__ + and first local variable on the stack. */ + PyFrameObject *f = PyThreadState_GET()->frame; + PyCodeObject *co = f->f_code; + int i, n; + if (co == NULL) { + PyErr_SetString(PyExc_SystemError, + "super(): no code object"); + return -1; + } + if (co->co_argcount == 0) { + PyErr_SetString(PyExc_SystemError, + "super(): no arguments"); + return -1; + } + obj = f->f_localsplus[0]; + if (obj == NULL) { + PyErr_SetString(PyExc_SystemError, + "super(): arg[0] deleted"); + return -1; + } + if (co->co_freevars == NULL) + n = 0; + else { + assert(PyTuple_Check(co->co_freevars)); + n = PyTuple_GET_SIZE(co->co_freevars); + } + for (i = 0; i < n; i++) { + PyObject *name = PyTuple_GET_ITEM(co->co_freevars, i); + assert(PyUnicode_Check(name)); + if (!PyUnicode_CompareWithASCIIString(name, + "__class__")) { + Py_ssize_t index = co->co_nlocals + + PyTuple_GET_SIZE(co->co_cellvars) + i; + PyObject *cell = f->f_localsplus[index]; + if (cell == NULL || !PyCell_Check(cell)) { + PyErr_SetString(PyExc_SystemError, + "super(): bad __class__ cell"); + return -1; + } + type = (PyTypeObject *) PyCell_GET(cell); + if (type == NULL) { + PyErr_SetString(PyExc_SystemError, + "super(): empty __class__ cell"); + return -1; + } + if (!PyType_Check(type)) { + PyErr_Format(PyExc_SystemError, + "super(): __class__ is not a type (%s)", + Py_TYPE(type)->tp_name); + return -1; + } + break; + } + } if (type == NULL) { - /* Call super(), without args -- fill in from __class__ - and first local variable on the stack. */ - PyFrameObject *f = PyThreadState_GET()->frame; - PyCodeObject *co = f->f_code; - int i, n; - if (co == NULL) { - PyErr_SetString(PyExc_SystemError, - "super(): no code object"); - return -1; - } - if (co->co_argcount == 0) { - PyErr_SetString(PyExc_SystemError, - "super(): no arguments"); - return -1; - } - obj = f->f_localsplus[0]; - if (obj == NULL) { - PyErr_SetString(PyExc_SystemError, - "super(): arg[0] deleted"); - return -1; - } - if (co->co_freevars == NULL) - n = 0; - else { - assert(PyTuple_Check(co->co_freevars)); - n = PyTuple_GET_SIZE(co->co_freevars); - } - for (i = 0; i < n; i++) { - PyObject *name = PyTuple_GET_ITEM(co->co_freevars, i); - assert(PyUnicode_Check(name)); - if (!PyUnicode_CompareWithASCIIString(name, - "__class__")) { - Py_ssize_t index = co->co_nlocals + - PyTuple_GET_SIZE(co->co_cellvars) + i; - PyObject *cell = f->f_localsplus[index]; - if (cell == NULL || !PyCell_Check(cell)) { - PyErr_SetString(PyExc_SystemError, - "super(): bad __class__ cell"); - return -1; - } - type = (PyTypeObject *) PyCell_GET(cell); - if (type == NULL) { - PyErr_SetString(PyExc_SystemError, - "super(): empty __class__ cell"); - return -1; - } - if (!PyType_Check(type)) { - PyErr_Format(PyExc_SystemError, - "super(): __class__ is not a type (%s)", - Py_TYPE(type)->tp_name); - return -1; - } - break; - } - } - if (type == NULL) { - PyErr_SetString(PyExc_SystemError, - "super(): __class__ cell not found"); - return -1; - } + PyErr_SetString(PyExc_SystemError, + "super(): __class__ cell not found"); + return -1; } - - if (obj == Py_None) - obj = NULL; - if (obj != NULL) { - obj_type = supercheck(type, obj); - if (obj_type == NULL) - return -1; - Py_INCREF(obj); - } - Py_INCREF(type); - su->type = type; - su->obj = obj; - su->obj_type = obj_type; - return 0; + } + + if (obj == Py_None) + obj = NULL; + if (obj != NULL) { + obj_type = supercheck(type, obj); + if (obj_type == NULL) + return -1; + Py_INCREF(obj); + } + Py_INCREF(type); + su->type = type; + su->obj = obj; + su->obj_type = obj_type; + return 0; } PyDoc_STRVAR(super_doc, @@ -6238,65 +6238,65 @@ PyDoc_STRVAR(super_doc, "Typical use to call a cooperative superclass method:\n" "class C(B):\n" " def meth(self, arg):\n" -" super().meth(arg)\n" +" super().meth(arg)\n" "This works for class methods too:\n" "class C(B):\n" " @classmethod\n" " def cmeth(cls, arg):\n" -" super().cmeth(arg)\n"); +" super().cmeth(arg)\n"); static int super_traverse(PyObject *self, visitproc visit, void *arg) { - superobject *su = (superobject *)self; + superobject *su = (superobject *)self; - Py_VISIT(su->obj); - Py_VISIT(su->type); - Py_VISIT(su->obj_type); + Py_VISIT(su->obj); + Py_VISIT(su->type); + Py_VISIT(su->obj_type); - return 0; + return 0; } PyTypeObject PySuper_Type = { - PyVarObject_HEAD_INIT(&PyType_Type, 0) - "super", /* tp_name */ - sizeof(superobject), /* tp_basicsize */ - 0, /* tp_itemsize */ - /* methods */ - super_dealloc, /* tp_dealloc */ - 0, /* tp_print */ - 0, /* tp_getattr */ - 0, /* tp_setattr */ - 0, /* tp_reserved */ - super_repr, /* tp_repr */ - 0, /* tp_as_number */ - 0, /* tp_as_sequence */ - 0, /* tp_as_mapping */ - 0, /* tp_hash */ - 0, /* tp_call */ - 0, /* tp_str */ - super_getattro, /* tp_getattro */ - 0, /* tp_setattro */ - 0, /* tp_as_buffer */ - Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | - Py_TPFLAGS_BASETYPE, /* tp_flags */ - super_doc, /* tp_doc */ - super_traverse, /* tp_traverse */ - 0, /* tp_clear */ - 0, /* tp_richcompare */ - 0, /* tp_weaklistoffset */ - 0, /* tp_iter */ - 0, /* tp_iternext */ - 0, /* tp_methods */ - super_members, /* tp_members */ - 0, /* tp_getset */ - 0, /* tp_base */ - 0, /* tp_dict */ - super_descr_get, /* tp_descr_get */ - 0, /* tp_descr_set */ - 0, /* tp_dictoffset */ - super_init, /* tp_init */ - PyType_GenericAlloc, /* tp_alloc */ - PyType_GenericNew, /* tp_new */ - PyObject_GC_Del, /* tp_free */ + PyVarObject_HEAD_INIT(&PyType_Type, 0) + "super", /* tp_name */ + sizeof(superobject), /* tp_basicsize */ + 0, /* tp_itemsize */ + /* methods */ + super_dealloc, /* tp_dealloc */ + 0, /* tp_print */ + 0, /* tp_getattr */ + 0, /* tp_setattr */ + 0, /* tp_reserved */ + super_repr, /* tp_repr */ + 0, /* tp_as_number */ + 0, /* tp_as_sequence */ + 0, /* tp_as_mapping */ + 0, /* tp_hash */ + 0, /* tp_call */ + 0, /* tp_str */ + super_getattro, /* tp_getattro */ + 0, /* tp_setattro */ + 0, /* tp_as_buffer */ + Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | + Py_TPFLAGS_BASETYPE, /* tp_flags */ + super_doc, /* tp_doc */ + super_traverse, /* tp_traverse */ + 0, /* tp_clear */ + 0, /* tp_richcompare */ + 0, /* tp_weaklistoffset */ + 0, /* tp_iter */ + 0, /* tp_iternext */ + 0, /* tp_methods */ + super_members, /* tp_members */ + 0, /* tp_getset */ + 0, /* tp_base */ + 0, /* tp_dict */ + super_descr_get, /* tp_descr_get */ + 0, /* tp_descr_set */ + 0, /* tp_dictoffset */ + super_init, /* tp_init */ + PyType_GenericAlloc, /* tp_alloc */ + PyType_GenericNew, /* tp_new */ + PyObject_GC_Del, /* tp_free */ }; |