diff options
Diffstat (limited to 'AppPkg/Applications/Python/Python-2.7.2/Objects/descrobject.c')
| -rw-r--r-- | AppPkg/Applications/Python/Python-2.7.2/Objects/descrobject.c | 1385 |
1 files changed, 1385 insertions, 0 deletions
diff --git a/AppPkg/Applications/Python/Python-2.7.2/Objects/descrobject.c b/AppPkg/Applications/Python/Python-2.7.2/Objects/descrobject.c new file mode 100644 index 0000000000..cadcb2bf81 --- /dev/null +++ b/AppPkg/Applications/Python/Python-2.7.2/Objects/descrobject.c @@ -0,0 +1,1385 @@ +/* Descriptors -- a new, flexible way to describe attributes */
+
+#include "Python.h"
+#include "structmember.h" /* Why is this not included in Python.h? */
+
+static void
+descr_dealloc(PyDescrObject *descr)
+{
+ _PyObject_GC_UNTRACK(descr);
+ Py_XDECREF(descr->d_type);
+ Py_XDECREF(descr->d_name);
+ PyObject_GC_Del(descr);
+}
+
+static char *
+descr_name(PyDescrObject *descr)
+{
+ if (descr->d_name != NULL && PyString_Check(descr->d_name))
+ return PyString_AS_STRING(descr->d_name);
+ else
+ return "?";
+}
+
+static PyObject *
+descr_repr(PyDescrObject *descr, char *format)
+{
+ return PyString_FromFormat(format, descr_name(descr),
+ descr->d_type->tp_name);
+}
+
+static PyObject *
+method_repr(PyMethodDescrObject *descr)
+{
+ return descr_repr((PyDescrObject *)descr,
+ "<method '%s' of '%s' objects>");
+}
+
+static PyObject *
+member_repr(PyMemberDescrObject *descr)
+{
+ return descr_repr((PyDescrObject *)descr,
+ "<member '%s' of '%s' objects>");
+}
+
+static PyObject *
+getset_repr(PyGetSetDescrObject *descr)
+{
+ return descr_repr((PyDescrObject *)descr,
+ "<attribute '%s' of '%s' objects>");
+}
+
+static PyObject *
+wrapperdescr_repr(PyWrapperDescrObject *descr)
+{
+ return descr_repr((PyDescrObject *)descr,
+ "<slot wrapper '%s' of '%s' objects>");
+}
+
+static int
+descr_check(PyDescrObject *descr, PyObject *obj, PyObject **pres)
+{
+ if (obj == NULL) {
+ Py_INCREF(descr);
+ *pres = (PyObject *)descr;
+ return 1;
+ }
+ if (!PyObject_TypeCheck(obj, descr->d_type)) {
+ PyErr_Format(PyExc_TypeError,
+ "descriptor '%s' for '%s' objects "
+ "doesn't apply to '%s' object",
+ descr_name((PyDescrObject *)descr),
+ descr->d_type->tp_name,
+ obj->ob_type->tp_name);
+ *pres = NULL;
+ return 1;
+ }
+ return 0;
+}
+
+static PyObject *
+classmethod_get(PyMethodDescrObject *descr, PyObject *obj, PyObject *type)
+{
+ /* Ensure a valid type. Class methods ignore obj. */
+ if (type == NULL) {
+ if (obj != NULL)
+ type = (PyObject *)obj->ob_type;
+ else {
+ /* Wot - no type?! */
+ PyErr_Format(PyExc_TypeError,
+ "descriptor '%s' for type '%s' "
+ "needs either an object or a type",
+ descr_name((PyDescrObject *)descr),
+ descr->d_type->tp_name);
+ return NULL;
+ }
+ }
+ if (!PyType_Check(type)) {
+ PyErr_Format(PyExc_TypeError,
+ "descriptor '%s' for type '%s' "
+ "needs a type, not a '%s' as arg 2",
+ descr_name((PyDescrObject *)descr),
+ descr->d_type->tp_name,
+ type->ob_type->tp_name);
+ return NULL;
+ }
+ if (!PyType_IsSubtype((PyTypeObject *)type, descr->d_type)) {
+ PyErr_Format(PyExc_TypeError,
+ "descriptor '%s' for type '%s' "
+ "doesn't apply to type '%s'",
+ descr_name((PyDescrObject *)descr),
+ descr->d_type->tp_name,
+ ((PyTypeObject *)type)->tp_name);
+ return NULL;
+ }
+ return PyCFunction_New(descr->d_method, type);
+}
+
+static PyObject *
+method_get(PyMethodDescrObject *descr, PyObject *obj, PyObject *type)
+{
+ PyObject *res;
+
+ if (descr_check((PyDescrObject *)descr, obj, &res))
+ return res;
+ return PyCFunction_New(descr->d_method, obj);
+}
+
+static PyObject *
+member_get(PyMemberDescrObject *descr, PyObject *obj, PyObject *type)
+{
+ PyObject *res;
+
+ if (descr_check((PyDescrObject *)descr, obj, &res))
+ return res;
+ return PyMember_GetOne((char *)obj, descr->d_member);
+}
+
+static PyObject *
+getset_get(PyGetSetDescrObject *descr, PyObject *obj, PyObject *type)
+{
+ PyObject *res;
+
+ if (descr_check((PyDescrObject *)descr, obj, &res))
+ return res;
+ if (descr->d_getset->get != NULL)
+ return descr->d_getset->get(obj, descr->d_getset->closure);
+ PyErr_Format(PyExc_AttributeError,
+ "attribute '%.300s' of '%.100s' objects is not readable",
+ descr_name((PyDescrObject *)descr),
+ descr->d_type->tp_name);
+ return NULL;
+}
+
+static PyObject *
+wrapperdescr_get(PyWrapperDescrObject *descr, PyObject *obj, PyObject *type)
+{
+ PyObject *res;
+
+ if (descr_check((PyDescrObject *)descr, obj, &res))
+ return res;
+ return PyWrapper_New((PyObject *)descr, obj);
+}
+
+static int
+descr_setcheck(PyDescrObject *descr, PyObject *obj, PyObject *value,
+ int *pres)
+{
+ assert(obj != NULL);
+ if (!PyObject_TypeCheck(obj, descr->d_type)) {
+ PyErr_Format(PyExc_TypeError,
+ "descriptor '%.200s' for '%.100s' objects "
+ "doesn't apply to '%.100s' object",
+ descr_name(descr),
+ descr->d_type->tp_name,
+ obj->ob_type->tp_name);
+ *pres = -1;
+ return 1;
+ }
+ return 0;
+}
+
+static int
+member_set(PyMemberDescrObject *descr, PyObject *obj, PyObject *value)
+{
+ int res;
+
+ if (descr_setcheck((PyDescrObject *)descr, obj, value, &res))
+ return res;
+ return PyMember_SetOne((char *)obj, descr->d_member, value);
+}
+
+static int
+getset_set(PyGetSetDescrObject *descr, PyObject *obj, PyObject *value)
+{
+ int res;
+
+ if (descr_setcheck((PyDescrObject *)descr, obj, value, &res))
+ return res;
+ if (descr->d_getset->set != NULL)
+ return descr->d_getset->set(obj, value,
+ descr->d_getset->closure);
+ PyErr_Format(PyExc_AttributeError,
+ "attribute '%.300s' of '%.100s' objects is not writable",
+ descr_name((PyDescrObject *)descr),
+ descr->d_type->tp_name);
+ return -1;
+}
+
+static PyObject *
+methoddescr_call(PyMethodDescrObject *descr, PyObject *args, PyObject *kwds)
+{
+ Py_ssize_t argc;
+ PyObject *self, *func, *result;
+
+ /* Make sure that the first argument is acceptable as 'self' */
+ assert(PyTuple_Check(args));
+ argc = PyTuple_GET_SIZE(args);
+ if (argc < 1) {
+ PyErr_Format(PyExc_TypeError,
+ "descriptor '%.300s' of '%.100s' "
+ "object needs an argument",
+ descr_name((PyDescrObject *)descr),
+ descr->d_type->tp_name);
+ return NULL;
+ }
+ self = PyTuple_GET_ITEM(args, 0);
+ if (!_PyObject_RealIsSubclass((PyObject *)Py_TYPE(self),
+ (PyObject *)(descr->d_type))) {
+ PyErr_Format(PyExc_TypeError,
+ "descriptor '%.200s' "
+ "requires a '%.100s' object "
+ "but received a '%.100s'",
+ descr_name((PyDescrObject *)descr),
+ descr->d_type->tp_name,
+ self->ob_type->tp_name);
+ return NULL;
+ }
+
+ func = PyCFunction_New(descr->d_method, self);
+ if (func == NULL)
+ return NULL;
+ args = PyTuple_GetSlice(args, 1, argc);
+ if (args == NULL) {
+ Py_DECREF(func);
+ return NULL;
+ }
+ result = PyEval_CallObjectWithKeywords(func, args, kwds);
+ Py_DECREF(args);
+ Py_DECREF(func);
+ return result;
+}
+
+static PyObject *
+classmethoddescr_call(PyMethodDescrObject *descr, PyObject *args,
+ PyObject *kwds)
+{
+ PyObject *func, *result;
+
+ func = PyCFunction_New(descr->d_method, (PyObject *)descr->d_type);
+ if (func == NULL)
+ return NULL;
+
+ result = PyEval_CallObjectWithKeywords(func, args, kwds);
+ Py_DECREF(func);
+ return result;
+}
+
+static PyObject *
+wrapperdescr_call(PyWrapperDescrObject *descr, PyObject *args, PyObject *kwds)
+{
+ Py_ssize_t argc;
+ PyObject *self, *func, *result;
+
+ /* Make sure that the first argument is acceptable as 'self' */
+ assert(PyTuple_Check(args));
+ argc = PyTuple_GET_SIZE(args);
+ if (argc < 1) {
+ PyErr_Format(PyExc_TypeError,
+ "descriptor '%.300s' of '%.100s' "
+ "object needs an argument",
+ descr_name((PyDescrObject *)descr),
+ descr->d_type->tp_name);
+ return NULL;
+ }
+ self = PyTuple_GET_ITEM(args, 0);
+ if (!_PyObject_RealIsSubclass((PyObject *)Py_TYPE(self),
+ (PyObject *)(descr->d_type))) {
+ PyErr_Format(PyExc_TypeError,
+ "descriptor '%.200s' "
+ "requires a '%.100s' object "
+ "but received a '%.100s'",
+ descr_name((PyDescrObject *)descr),
+ descr->d_type->tp_name,
+ self->ob_type->tp_name);
+ return NULL;
+ }
+
+ func = PyWrapper_New((PyObject *)descr, self);
+ if (func == NULL)
+ return NULL;
+ args = PyTuple_GetSlice(args, 1, argc);
+ if (args == NULL) {
+ Py_DECREF(func);
+ return NULL;
+ }
+ result = PyEval_CallObjectWithKeywords(func, args, kwds);
+ Py_DECREF(args);
+ Py_DECREF(func);
+ return result;
+}
+
+static PyObject *
+method_get_doc(PyMethodDescrObject *descr, void *closure)
+{
+ if (descr->d_method->ml_doc == NULL) {
+ Py_INCREF(Py_None);
+ return Py_None;
+ }
+ return PyString_FromString(descr->d_method->ml_doc);
+}
+
+static PyMemberDef descr_members[] = {
+ {"__objclass__", T_OBJECT, offsetof(PyDescrObject, d_type), READONLY},
+ {"__name__", T_OBJECT, offsetof(PyDescrObject, d_name), READONLY},
+ {0}
+};
+
+static PyGetSetDef method_getset[] = {
+ {"__doc__", (getter)method_get_doc},
+ {0}
+};
+
+static PyObject *
+member_get_doc(PyMemberDescrObject *descr, void *closure)
+{
+ if (descr->d_member->doc == NULL) {
+ Py_INCREF(Py_None);
+ return Py_None;
+ }
+ return PyString_FromString(descr->d_member->doc);
+}
+
+static PyGetSetDef member_getset[] = {
+ {"__doc__", (getter)member_get_doc},
+ {0}
+};
+
+static PyObject *
+getset_get_doc(PyGetSetDescrObject *descr, void *closure)
+{
+ if (descr->d_getset->doc == NULL) {
+ Py_INCREF(Py_None);
+ return Py_None;
+ }
+ return PyString_FromString(descr->d_getset->doc);
+}
+
+static PyGetSetDef getset_getset[] = {
+ {"__doc__", (getter)getset_get_doc},
+ {0}
+};
+
+static PyObject *
+wrapperdescr_get_doc(PyWrapperDescrObject *descr, void *closure)
+{
+ if (descr->d_base->doc == NULL) {
+ Py_INCREF(Py_None);
+ return Py_None;
+ }
+ return PyString_FromString(descr->d_base->doc);
+}
+
+static PyGetSetDef wrapperdescr_getset[] = {
+ {"__doc__", (getter)wrapperdescr_get_doc},
+ {0}
+};
+
+static int
+descr_traverse(PyObject *self, visitproc visit, void *arg)
+{
+ PyDescrObject *descr = (PyDescrObject *)self;
+ Py_VISIT(descr->d_type);
+ return 0;
+}
+
+static PyTypeObject PyMethodDescr_Type = {
+ PyVarObject_HEAD_INIT(&PyType_Type, 0)
+ "method_descriptor",
+ sizeof(PyMethodDescrObject),
+ 0,
+ (destructor)descr_dealloc, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ 0, /* tp_compare */
+ (reprfunc)method_repr, /* tp_repr */
+ 0, /* tp_as_number */
+ 0, /* tp_as_sequence */
+ 0, /* tp_as_mapping */
+ 0, /* tp_hash */
+ (ternaryfunc)methoddescr_call, /* tp_call */
+ 0, /* tp_str */
+ PyObject_GenericGetAttr, /* tp_getattro */
+ 0, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
+ 0, /* tp_doc */
+ descr_traverse, /* tp_traverse */
+ 0, /* tp_clear */
+ 0, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ 0, /* tp_methods */
+ descr_members, /* tp_members */
+ method_getset, /* tp_getset */
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ (descrgetfunc)method_get, /* tp_descr_get */
+ 0, /* tp_descr_set */
+};
+
+/* This is for METH_CLASS in C, not for "f = classmethod(f)" in Python! */
+static PyTypeObject PyClassMethodDescr_Type = {
+ PyVarObject_HEAD_INIT(&PyType_Type, 0)
+ "classmethod_descriptor",
+ sizeof(PyMethodDescrObject),
+ 0,
+ (destructor)descr_dealloc, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ 0, /* tp_compare */
+ (reprfunc)method_repr, /* tp_repr */
+ 0, /* tp_as_number */
+ 0, /* tp_as_sequence */
+ 0, /* tp_as_mapping */
+ 0, /* tp_hash */
+ (ternaryfunc)classmethoddescr_call, /* tp_call */
+ 0, /* tp_str */
+ PyObject_GenericGetAttr, /* tp_getattro */
+ 0, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
+ 0, /* tp_doc */
+ descr_traverse, /* tp_traverse */
+ 0, /* tp_clear */
+ 0, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ 0, /* tp_methods */
+ descr_members, /* tp_members */
+ method_getset, /* tp_getset */
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ (descrgetfunc)classmethod_get, /* tp_descr_get */
+ 0, /* tp_descr_set */
+};
+
+PyTypeObject PyMemberDescr_Type = {
+ PyVarObject_HEAD_INIT(&PyType_Type, 0)
+ "member_descriptor",
+ sizeof(PyMemberDescrObject),
+ 0,
+ (destructor)descr_dealloc, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ 0, /* tp_compare */
+ (reprfunc)member_repr, /* tp_repr */
+ 0, /* tp_as_number */
+ 0, /* tp_as_sequence */
+ 0, /* tp_as_mapping */
+ 0, /* tp_hash */
+ 0, /* tp_call */
+ 0, /* tp_str */
+ PyObject_GenericGetAttr, /* tp_getattro */
+ 0, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
+ 0, /* tp_doc */
+ descr_traverse, /* tp_traverse */
+ 0, /* tp_clear */
+ 0, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ 0, /* tp_methods */
+ descr_members, /* tp_members */
+ member_getset, /* tp_getset */
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ (descrgetfunc)member_get, /* tp_descr_get */
+ (descrsetfunc)member_set, /* tp_descr_set */
+};
+
+PyTypeObject PyGetSetDescr_Type = {
+ PyVarObject_HEAD_INIT(&PyType_Type, 0)
+ "getset_descriptor",
+ sizeof(PyGetSetDescrObject),
+ 0,
+ (destructor)descr_dealloc, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ 0, /* tp_compare */
+ (reprfunc)getset_repr, /* tp_repr */
+ 0, /* tp_as_number */
+ 0, /* tp_as_sequence */
+ 0, /* tp_as_mapping */
+ 0, /* tp_hash */
+ 0, /* tp_call */
+ 0, /* tp_str */
+ PyObject_GenericGetAttr, /* tp_getattro */
+ 0, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
+ 0, /* tp_doc */
+ descr_traverse, /* tp_traverse */
+ 0, /* tp_clear */
+ 0, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ 0, /* tp_methods */
+ descr_members, /* tp_members */
+ getset_getset, /* tp_getset */
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ (descrgetfunc)getset_get, /* tp_descr_get */
+ (descrsetfunc)getset_set, /* tp_descr_set */
+};
+
+PyTypeObject PyWrapperDescr_Type = {
+ PyVarObject_HEAD_INIT(&PyType_Type, 0)
+ "wrapper_descriptor",
+ sizeof(PyWrapperDescrObject),
+ 0,
+ (destructor)descr_dealloc, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ 0, /* tp_compare */
+ (reprfunc)wrapperdescr_repr, /* tp_repr */
+ 0, /* tp_as_number */
+ 0, /* tp_as_sequence */
+ 0, /* tp_as_mapping */
+ 0, /* tp_hash */
+ (ternaryfunc)wrapperdescr_call, /* tp_call */
+ 0, /* tp_str */
+ PyObject_GenericGetAttr, /* tp_getattro */
+ 0, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
+ 0, /* tp_doc */
+ descr_traverse, /* tp_traverse */
+ 0, /* tp_clear */
+ 0, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ 0, /* tp_methods */
+ descr_members, /* tp_members */
+ wrapperdescr_getset, /* tp_getset */
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ (descrgetfunc)wrapperdescr_get, /* tp_descr_get */
+ 0, /* tp_descr_set */
+};
+
+static PyDescrObject *
+descr_new(PyTypeObject *descrtype, PyTypeObject *type, const char *name)
+{
+ PyDescrObject *descr;
+
+ descr = (PyDescrObject *)PyType_GenericAlloc(descrtype, 0);
+ if (descr != NULL) {
+ Py_XINCREF(type);
+ descr->d_type = type;
+ descr->d_name = PyString_InternFromString(name);
+ if (descr->d_name == NULL) {
+ Py_DECREF(descr);
+ descr = NULL;
+ }
+ }
+ return descr;
+}
+
+PyObject *
+PyDescr_NewMethod(PyTypeObject *type, PyMethodDef *method)
+{
+ PyMethodDescrObject *descr;
+
+ descr = (PyMethodDescrObject *)descr_new(&PyMethodDescr_Type,
+ type, method->ml_name);
+ if (descr != NULL)
+ descr->d_method = method;
+ return (PyObject *)descr;
+}
+
+PyObject *
+PyDescr_NewClassMethod(PyTypeObject *type, PyMethodDef *method)
+{
+ PyMethodDescrObject *descr;
+
+ descr = (PyMethodDescrObject *)descr_new(&PyClassMethodDescr_Type,
+ type, method->ml_name);
+ if (descr != NULL)
+ descr->d_method = method;
+ return (PyObject *)descr;
+}
+
+PyObject *
+PyDescr_NewMember(PyTypeObject *type, PyMemberDef *member)
+{
+ PyMemberDescrObject *descr;
+
+ descr = (PyMemberDescrObject *)descr_new(&PyMemberDescr_Type,
+ type, member->name);
+ if (descr != NULL)
+ descr->d_member = member;
+ return (PyObject *)descr;
+}
+
+PyObject *
+PyDescr_NewGetSet(PyTypeObject *type, PyGetSetDef *getset)
+{
+ PyGetSetDescrObject *descr;
+
+ descr = (PyGetSetDescrObject *)descr_new(&PyGetSetDescr_Type,
+ type, getset->name);
+ if (descr != NULL)
+ descr->d_getset = getset;
+ return (PyObject *)descr;
+}
+
+PyObject *
+PyDescr_NewWrapper(PyTypeObject *type, struct wrapperbase *base, void *wrapped)
+{
+ PyWrapperDescrObject *descr;
+
+ descr = (PyWrapperDescrObject *)descr_new(&PyWrapperDescr_Type,
+ type, base->name);
+ if (descr != NULL) {
+ descr->d_base = base;
+ descr->d_wrapped = wrapped;
+ }
+ return (PyObject *)descr;
+}
+
+
+/* --- Readonly proxy for dictionaries (actually any mapping) --- */
+
+/* This has no reason to be in this file except that adding new files is a
+ bit of a pain */
+
+typedef struct {
+ PyObject_HEAD
+ PyObject *dict;
+} proxyobject;
+
+static Py_ssize_t
+proxy_len(proxyobject *pp)
+{
+ return PyObject_Size(pp->dict);
+}
+
+static PyObject *
+proxy_getitem(proxyobject *pp, PyObject *key)
+{
+ return PyObject_GetItem(pp->dict, key);
+}
+
+static PyMappingMethods proxy_as_mapping = {
+ (lenfunc)proxy_len, /* mp_length */
+ (binaryfunc)proxy_getitem, /* mp_subscript */
+ 0, /* mp_ass_subscript */
+};
+
+static int
+proxy_contains(proxyobject *pp, PyObject *key)
+{
+ return PyDict_Contains(pp->dict, key);
+}
+
+static PySequenceMethods proxy_as_sequence = {
+ 0, /* sq_length */
+ 0, /* sq_concat */
+ 0, /* sq_repeat */
+ 0, /* sq_item */
+ 0, /* sq_slice */
+ 0, /* sq_ass_item */
+ 0, /* sq_ass_slice */
+ (objobjproc)proxy_contains, /* sq_contains */
+ 0, /* sq_inplace_concat */
+ 0, /* sq_inplace_repeat */
+};
+
+static PyObject *
+proxy_has_key(proxyobject *pp, PyObject *key)
+{
+ int res = PyDict_Contains(pp->dict, key);
+ if (res < 0)
+ return NULL;
+ return PyBool_FromLong(res);
+}
+
+static PyObject *
+proxy_get(proxyobject *pp, PyObject *args)
+{
+ PyObject *key, *def = Py_None;
+
+ if (!PyArg_UnpackTuple(args, "get", 1, 2, &key, &def))
+ return NULL;
+ return PyObject_CallMethod(pp->dict, "get", "(OO)", key, def);
+}
+
+static PyObject *
+proxy_keys(proxyobject *pp)
+{
+ return PyMapping_Keys(pp->dict);
+}
+
+static PyObject *
+proxy_values(proxyobject *pp)
+{
+ return PyMapping_Values(pp->dict);
+}
+
+static PyObject *
+proxy_items(proxyobject *pp)
+{
+ return PyMapping_Items(pp->dict);
+}
+
+static PyObject *
+proxy_iterkeys(proxyobject *pp)
+{
+ return PyObject_CallMethod(pp->dict, "iterkeys", NULL);
+}
+
+static PyObject *
+proxy_itervalues(proxyobject *pp)
+{
+ return PyObject_CallMethod(pp->dict, "itervalues", NULL);
+}
+
+static PyObject *
+proxy_iteritems(proxyobject *pp)
+{
+ return PyObject_CallMethod(pp->dict, "iteritems", NULL);
+}
+static PyObject *
+proxy_copy(proxyobject *pp)
+{
+ return PyObject_CallMethod(pp->dict, "copy", NULL);
+}
+
+static PyMethodDef proxy_methods[] = {
+ {"has_key", (PyCFunction)proxy_has_key, METH_O,
+ PyDoc_STR("D.has_key(k) -> True if D has a key k, else False")},
+ {"get", (PyCFunction)proxy_get, METH_VARARGS,
+ PyDoc_STR("D.get(k[,d]) -> D[k] if D.has_key(k), else d."
+ " d defaults to None.")},
+ {"keys", (PyCFunction)proxy_keys, METH_NOARGS,
+ PyDoc_STR("D.keys() -> list of D's keys")},
+ {"values", (PyCFunction)proxy_values, METH_NOARGS,
+ PyDoc_STR("D.values() -> list of D's values")},
+ {"items", (PyCFunction)proxy_items, METH_NOARGS,
+ PyDoc_STR("D.items() -> list of D's (key, value) pairs, as 2-tuples")},
+ {"iterkeys", (PyCFunction)proxy_iterkeys, METH_NOARGS,
+ PyDoc_STR("D.iterkeys() -> an iterator over the keys of D")},
+ {"itervalues",(PyCFunction)proxy_itervalues, METH_NOARGS,
+ PyDoc_STR("D.itervalues() -> an iterator over the values of D")},
+ {"iteritems", (PyCFunction)proxy_iteritems, METH_NOARGS,
+ PyDoc_STR("D.iteritems() ->"
+ " an iterator over the (key, value) items of D")},
+ {"copy", (PyCFunction)proxy_copy, METH_NOARGS,
+ PyDoc_STR("D.copy() -> a shallow copy of D")},
+ {0}
+};
+
+static void
+proxy_dealloc(proxyobject *pp)
+{
+ _PyObject_GC_UNTRACK(pp);
+ Py_DECREF(pp->dict);
+ PyObject_GC_Del(pp);
+}
+
+static PyObject *
+proxy_getiter(proxyobject *pp)
+{
+ return PyObject_GetIter(pp->dict);
+}
+
+static PyObject *
+proxy_str(proxyobject *pp)
+{
+ return PyObject_Str(pp->dict);
+}
+
+static int
+proxy_traverse(PyObject *self, visitproc visit, void *arg)
+{
+ proxyobject *pp = (proxyobject *)self;
+ Py_VISIT(pp->dict);
+ return 0;
+}
+
+static int
+proxy_compare(proxyobject *v, PyObject *w)
+{
+ return PyObject_Compare(v->dict, w);
+}
+
+static PyObject *
+proxy_richcompare(proxyobject *v, PyObject *w, int op)
+{
+ return PyObject_RichCompare(v->dict, w, op);
+}
+
+PyTypeObject PyDictProxy_Type = {
+ PyVarObject_HEAD_INIT(&PyType_Type, 0)
+ "dictproxy", /* tp_name */
+ sizeof(proxyobject), /* tp_basicsize */
+ 0, /* tp_itemsize */
+ /* methods */
+ (destructor)proxy_dealloc, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ (cmpfunc)proxy_compare, /* tp_compare */
+ 0, /* tp_repr */
+ 0, /* tp_as_number */
+ &proxy_as_sequence, /* tp_as_sequence */
+ &proxy_as_mapping, /* tp_as_mapping */
+ 0, /* tp_hash */
+ 0, /* tp_call */
+ (reprfunc)proxy_str, /* tp_str */
+ PyObject_GenericGetAttr, /* tp_getattro */
+ 0, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
+ 0, /* tp_doc */
+ proxy_traverse, /* tp_traverse */
+ 0, /* tp_clear */
+ (richcmpfunc)proxy_richcompare, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ (getiterfunc)proxy_getiter, /* tp_iter */
+ 0, /* tp_iternext */
+ proxy_methods, /* tp_methods */
+ 0, /* tp_members */
+ 0, /* tp_getset */
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ 0, /* tp_descr_get */
+ 0, /* tp_descr_set */
+};
+
+PyObject *
+PyDictProxy_New(PyObject *dict)
+{
+ proxyobject *pp;
+
+ pp = PyObject_GC_New(proxyobject, &PyDictProxy_Type);
+ if (pp != NULL) {
+ Py_INCREF(dict);
+ pp->dict = dict;
+ _PyObject_GC_TRACK(pp);
+ }
+ return (PyObject *)pp;
+}
+
+
+/* --- Wrapper object for "slot" methods --- */
+
+/* This has no reason to be in this file except that adding new files is a
+ bit of a pain */
+
+typedef struct {
+ PyObject_HEAD
+ PyWrapperDescrObject *descr;
+ PyObject *self;
+} wrapperobject;
+
+static void
+wrapper_dealloc(wrapperobject *wp)
+{
+ PyObject_GC_UnTrack(wp);
+ Py_TRASHCAN_SAFE_BEGIN(wp)
+ Py_XDECREF(wp->descr);
+ Py_XDECREF(wp->self);
+ PyObject_GC_Del(wp);
+ Py_TRASHCAN_SAFE_END(wp)
+}
+
+static int
+wrapper_compare(wrapperobject *a, wrapperobject *b)
+{
+ if (a->descr == b->descr)
+ return PyObject_Compare(a->self, b->self);
+ else
+ return (a->descr < b->descr) ? -1 : 1;
+}
+
+static long
+wrapper_hash(wrapperobject *wp)
+{
+ int x, y;
+ x = _Py_HashPointer(wp->descr);
+ if (x == -1)
+ return -1;
+ y = PyObject_Hash(wp->self);
+ if (y == -1)
+ return -1;
+ x = x ^ y;
+ if (x == -1)
+ x = -2;
+ return x;
+}
+
+static PyObject *
+wrapper_repr(wrapperobject *wp)
+{
+ return PyString_FromFormat("<method-wrapper '%s' of %s object at %p>",
+ wp->descr->d_base->name,
+ wp->self->ob_type->tp_name,
+ wp->self);
+}
+
+static PyMemberDef wrapper_members[] = {
+ {"__self__", T_OBJECT, offsetof(wrapperobject, self), READONLY},
+ {0}
+};
+
+static PyObject *
+wrapper_objclass(wrapperobject *wp)
+{
+ PyObject *c = (PyObject *)wp->descr->d_type;
+
+ Py_INCREF(c);
+ return c;
+}
+
+static PyObject *
+wrapper_name(wrapperobject *wp)
+{
+ char *s = wp->descr->d_base->name;
+
+ return PyString_FromString(s);
+}
+
+static PyObject *
+wrapper_doc(wrapperobject *wp)
+{
+ char *s = wp->descr->d_base->doc;
+
+ if (s == NULL) {
+ Py_INCREF(Py_None);
+ return Py_None;
+ }
+ else {
+ return PyString_FromString(s);
+ }
+}
+
+static PyGetSetDef wrapper_getsets[] = {
+ {"__objclass__", (getter)wrapper_objclass},
+ {"__name__", (getter)wrapper_name},
+ {"__doc__", (getter)wrapper_doc},
+ {0}
+};
+
+static PyObject *
+wrapper_call(wrapperobject *wp, PyObject *args, PyObject *kwds)
+{
+ wrapperfunc wrapper = wp->descr->d_base->wrapper;
+ PyObject *self = wp->self;
+
+ if (wp->descr->d_base->flags & PyWrapperFlag_KEYWORDS) {
+ wrapperfunc_kwds wk = (wrapperfunc_kwds)wrapper;
+ return (*wk)(self, args, wp->descr->d_wrapped, kwds);
+ }
+
+ if (kwds != NULL && (!PyDict_Check(kwds) || PyDict_Size(kwds) != 0)) {
+ PyErr_Format(PyExc_TypeError,
+ "wrapper %s doesn't take keyword arguments",
+ wp->descr->d_base->name);
+ return NULL;
+ }
+ return (*wrapper)(self, args, wp->descr->d_wrapped);
+}
+
+static int
+wrapper_traverse(PyObject *self, visitproc visit, void *arg)
+{
+ wrapperobject *wp = (wrapperobject *)self;
+ Py_VISIT(wp->descr);
+ Py_VISIT(wp->self);
+ return 0;
+}
+
+static PyTypeObject wrappertype = {
+ PyVarObject_HEAD_INIT(&PyType_Type, 0)
+ "method-wrapper", /* tp_name */
+ sizeof(wrapperobject), /* tp_basicsize */
+ 0, /* tp_itemsize */
+ /* methods */
+ (destructor)wrapper_dealloc, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ (cmpfunc)wrapper_compare, /* tp_compare */
+ (reprfunc)wrapper_repr, /* tp_repr */
+ 0, /* tp_as_number */
+ 0, /* tp_as_sequence */
+ 0, /* tp_as_mapping */
+ (hashfunc)wrapper_hash, /* tp_hash */
+ (ternaryfunc)wrapper_call, /* tp_call */
+ 0, /* tp_str */
+ PyObject_GenericGetAttr, /* tp_getattro */
+ 0, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
+ 0, /* tp_doc */
+ wrapper_traverse, /* tp_traverse */
+ 0, /* tp_clear */
+ 0, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ 0, /* tp_methods */
+ wrapper_members, /* tp_members */
+ wrapper_getsets, /* tp_getset */
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ 0, /* tp_descr_get */
+ 0, /* tp_descr_set */
+};
+
+PyObject *
+PyWrapper_New(PyObject *d, PyObject *self)
+{
+ wrapperobject *wp;
+ PyWrapperDescrObject *descr;
+
+ assert(PyObject_TypeCheck(d, &PyWrapperDescr_Type));
+ descr = (PyWrapperDescrObject *)d;
+ assert(_PyObject_RealIsSubclass((PyObject *)Py_TYPE(self),
+ (PyObject *)(descr->d_type)));
+
+ wp = PyObject_GC_New(wrapperobject, &wrappertype);
+ if (wp != NULL) {
+ Py_INCREF(descr);
+ wp->descr = descr;
+ Py_INCREF(self);
+ wp->self = self;
+ _PyObject_GC_TRACK(wp);
+ }
+ return (PyObject *)wp;
+}
+
+
+/* A built-in 'property' type */
+
+/*
+ class property(object):
+
+ def __init__(self, fget=None, fset=None, fdel=None, doc=None):
+ if doc is None and fget is not None and hasattr(fget, "__doc__"):
+ doc = fget.__doc__
+ self.__get = fget
+ self.__set = fset
+ self.__del = fdel
+ self.__doc__ = doc
+
+ def __get__(self, inst, type=None):
+ if inst is None:
+ return self
+ if self.__get is None:
+ raise AttributeError, "unreadable attribute"
+ return self.__get(inst)
+
+ def __set__(self, inst, value):
+ if self.__set is None:
+ raise AttributeError, "can't set attribute"
+ return self.__set(inst, value)
+
+ def __delete__(self, inst):
+ if self.__del is None:
+ raise AttributeError, "can't delete attribute"
+ return self.__del(inst)
+
+*/
+
+typedef struct {
+ PyObject_HEAD
+ PyObject *prop_get;
+ PyObject *prop_set;
+ PyObject *prop_del;
+ PyObject *prop_doc;
+ int getter_doc;
+} propertyobject;
+
+static PyObject * property_copy(PyObject *, PyObject *, PyObject *,
+ PyObject *);
+
+static PyMemberDef property_members[] = {
+ {"fget", T_OBJECT, offsetof(propertyobject, prop_get), READONLY},
+ {"fset", T_OBJECT, offsetof(propertyobject, prop_set), READONLY},
+ {"fdel", T_OBJECT, offsetof(propertyobject, prop_del), READONLY},
+ {"__doc__", T_OBJECT, offsetof(propertyobject, prop_doc), READONLY},
+ {0}
+};
+
+
+PyDoc_STRVAR(getter_doc,
+ "Descriptor to change the getter on a property.");
+
+static PyObject *
+property_getter(PyObject *self, PyObject *getter)
+{
+ return property_copy(self, getter, NULL, NULL);
+}
+
+
+PyDoc_STRVAR(setter_doc,
+ "Descriptor to change the setter on a property.");
+
+static PyObject *
+property_setter(PyObject *self, PyObject *setter)
+{
+ return property_copy(self, NULL, setter, NULL);
+}
+
+
+PyDoc_STRVAR(deleter_doc,
+ "Descriptor to change the deleter on a property.");
+
+static PyObject *
+property_deleter(PyObject *self, PyObject *deleter)
+{
+ return property_copy(self, NULL, NULL, deleter);
+}
+
+
+static PyMethodDef property_methods[] = {
+ {"getter", property_getter, METH_O, getter_doc},
+ {"setter", property_setter, METH_O, setter_doc},
+ {"deleter", property_deleter, METH_O, deleter_doc},
+ {0}
+};
+
+
+static void
+property_dealloc(PyObject *self)
+{
+ propertyobject *gs = (propertyobject *)self;
+
+ _PyObject_GC_UNTRACK(self);
+ Py_XDECREF(gs->prop_get);
+ Py_XDECREF(gs->prop_set);
+ Py_XDECREF(gs->prop_del);
+ Py_XDECREF(gs->prop_doc);
+ self->ob_type->tp_free(self);
+}
+
+static PyObject *
+property_descr_get(PyObject *self, PyObject *obj, PyObject *type)
+{
+ propertyobject *gs = (propertyobject *)self;
+
+ if (obj == NULL || obj == Py_None) {
+ Py_INCREF(self);
+ return self;
+ }
+ if (gs->prop_get == NULL) {
+ PyErr_SetString(PyExc_AttributeError, "unreadable attribute");
+ return NULL;
+ }
+ return PyObject_CallFunction(gs->prop_get, "(O)", obj);
+}
+
+static int
+property_descr_set(PyObject *self, PyObject *obj, PyObject *value)
+{
+ propertyobject *gs = (propertyobject *)self;
+ PyObject *func, *res;
+
+ if (value == NULL)
+ func = gs->prop_del;
+ else
+ func = gs->prop_set;
+ if (func == NULL) {
+ PyErr_SetString(PyExc_AttributeError,
+ value == NULL ?
+ "can't delete attribute" :
+ "can't set attribute");
+ return -1;
+ }
+ if (value == NULL)
+ res = PyObject_CallFunction(func, "(O)", obj);
+ else
+ res = PyObject_CallFunction(func, "(OO)", obj, value);
+ if (res == NULL)
+ return -1;
+ Py_DECREF(res);
+ return 0;
+}
+
+static PyObject *
+property_copy(PyObject *old, PyObject *get, PyObject *set, PyObject *del)
+{
+ propertyobject *pold = (propertyobject *)old;
+ PyObject *new, *type, *doc;
+
+ type = PyObject_Type(old);
+ if (type == NULL)
+ return NULL;
+
+ if (get == NULL || get == Py_None) {
+ Py_XDECREF(get);
+ get = pold->prop_get ? pold->prop_get : Py_None;
+ }
+ if (set == NULL || set == Py_None) {
+ Py_XDECREF(set);
+ set = pold->prop_set ? pold->prop_set : Py_None;
+ }
+ if (del == NULL || del == Py_None) {
+ Py_XDECREF(del);
+ del = pold->prop_del ? pold->prop_del : Py_None;
+ }
+ if (pold->getter_doc && get != Py_None) {
+ /* make _init use __doc__ from getter */
+ doc = Py_None;
+ }
+ else {
+ doc = pold->prop_doc ? pold->prop_doc : Py_None;
+ }
+
+ new = PyObject_CallFunction(type, "OOOO", get, set, del, doc);
+ Py_DECREF(type);
+ if (new == NULL)
+ return NULL;
+ return new;
+}
+
+static int
+property_init(PyObject *self, PyObject *args, PyObject *kwds)
+{
+ PyObject *get = NULL, *set = NULL, *del = NULL, *doc = NULL;
+ static char *kwlist[] = {"fget", "fset", "fdel", "doc", 0};
+ propertyobject *prop = (propertyobject *)self;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwds, "|OOOO:property",
+ kwlist, &get, &set, &del, &doc))
+ return -1;
+
+ if (get == Py_None)
+ get = NULL;
+ if (set == Py_None)
+ set = NULL;
+ if (del == Py_None)
+ del = NULL;
+
+ Py_XINCREF(get);
+ Py_XINCREF(set);
+ Py_XINCREF(del);
+ Py_XINCREF(doc);
+
+ prop->prop_get = get;
+ prop->prop_set = set;
+ prop->prop_del = del;
+ prop->prop_doc = doc;
+ prop->getter_doc = 0;
+
+ /* if no docstring given and the getter has one, use that one */
+ if ((doc == NULL || doc == Py_None) && get != NULL) {
+ PyObject *get_doc = PyObject_GetAttrString(get, "__doc__");
+ if (get_doc) {
+ if (Py_TYPE(self) == &PyProperty_Type) {
+ Py_XDECREF(prop->prop_doc);
+ prop->prop_doc = get_doc;
+ }
+ else {
+ /* If this is a property subclass, put __doc__
+ in dict of the subclass instance instead,
+ otherwise it gets shadowed by __doc__ in the
+ class's dict. */
+ int err = PyObject_SetAttrString(self, "__doc__", get_doc);
+ Py_DECREF(get_doc);
+ if (err < 0)
+ return -1;
+ }
+ prop->getter_doc = 1;
+ }
+ else if (PyErr_ExceptionMatches(PyExc_Exception)) {
+ PyErr_Clear();
+ }
+ else {
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+PyDoc_STRVAR(property_doc,
+"property(fget=None, fset=None, fdel=None, doc=None) -> property attribute\n"
+"\n"
+"fget is a function to be used for getting an attribute value, and likewise\n"
+"fset is a function for setting, and fdel a function for del'ing, an\n"
+"attribute. Typical use is to define a managed attribute x:\n"
+"class C(object):\n"
+" def getx(self): return self._x\n"
+" def setx(self, value): self._x = value\n"
+" def delx(self): del self._x\n"
+" x = property(getx, setx, delx, \"I'm the 'x' property.\")\n"
+"\n"
+"Decorators make defining new properties or modifying existing ones easy:\n"
+"class C(object):\n"
+" @property\n"
+" def x(self): return self._x\n"
+" @x.setter\n"
+" def x(self, value): self._x = value\n"
+" @x.deleter\n"
+" def x(self): del self._x\n"
+);
+
+static int
+property_traverse(PyObject *self, visitproc visit, void *arg)
+{
+ propertyobject *pp = (propertyobject *)self;
+ Py_VISIT(pp->prop_get);
+ Py_VISIT(pp->prop_set);
+ Py_VISIT(pp->prop_del);
+ Py_VISIT(pp->prop_doc);
+ return 0;
+}
+
+PyTypeObject PyProperty_Type = {
+ PyVarObject_HEAD_INIT(&PyType_Type, 0)
+ "property", /* tp_name */
+ sizeof(propertyobject), /* tp_basicsize */
+ 0, /* tp_itemsize */
+ /* methods */
+ property_dealloc, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ 0, /* tp_compare */
+ 0, /* tp_repr */
+ 0, /* tp_as_number */
+ 0, /* tp_as_sequence */
+ 0, /* tp_as_mapping */
+ 0, /* tp_hash */
+ 0, /* tp_call */
+ 0, /* tp_str */
+ PyObject_GenericGetAttr, /* tp_getattro */
+ 0, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
+ Py_TPFLAGS_BASETYPE, /* tp_flags */
+ property_doc, /* tp_doc */
+ property_traverse, /* tp_traverse */
+ 0, /* tp_clear */
+ 0, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ property_methods, /* tp_methods */
+ property_members, /* tp_members */
+ 0, /* tp_getset */
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ property_descr_get, /* tp_descr_get */
+ property_descr_set, /* tp_descr_set */
+ 0, /* tp_dictoffset */
+ property_init, /* tp_init */
+ PyType_GenericAlloc, /* tp_alloc */
+ PyType_GenericNew, /* tp_new */
+ PyObject_GC_Del, /* tp_free */
+};
|