diff options
Diffstat (limited to 'AppPkg/Applications/Python/Python-2.7.2/Objects/funcobject.c')
| -rw-r--r-- | AppPkg/Applications/Python/Python-2.7.2/Objects/funcobject.c | 897 |
1 files changed, 897 insertions, 0 deletions
diff --git a/AppPkg/Applications/Python/Python-2.7.2/Objects/funcobject.c b/AppPkg/Applications/Python/Python-2.7.2/Objects/funcobject.c new file mode 100644 index 0000000000..ba7ffe1b38 --- /dev/null +++ b/AppPkg/Applications/Python/Python-2.7.2/Objects/funcobject.c @@ -0,0 +1,897 @@ +
+/* Function object implementation */
+
+#include "Python.h"
+#include "code.h"
+#include "eval.h"
+#include "structmember.h"
+
+PyObject *
+PyFunction_New(PyObject *code, PyObject *globals)
+{
+ PyFunctionObject *op = PyObject_GC_New(PyFunctionObject,
+ &PyFunction_Type);
+ static PyObject *__name__ = 0;
+ if (op != NULL) {
+ PyObject *doc;
+ PyObject *consts;
+ PyObject *module;
+ op->func_weakreflist = NULL;
+ Py_INCREF(code);
+ op->func_code = code;
+ Py_INCREF(globals);
+ op->func_globals = globals;
+ op->func_name = ((PyCodeObject *)code)->co_name;
+ Py_INCREF(op->func_name);
+ op->func_defaults = NULL; /* No default arguments */
+ op->func_closure = NULL;
+ consts = ((PyCodeObject *)code)->co_consts;
+ if (PyTuple_Size(consts) >= 1) {
+ doc = PyTuple_GetItem(consts, 0);
+ if (!PyString_Check(doc) && !PyUnicode_Check(doc))
+ doc = Py_None;
+ }
+ else
+ doc = Py_None;
+ Py_INCREF(doc);
+ op->func_doc = doc;
+ op->func_dict = NULL;
+ op->func_module = NULL;
+
+ /* __module__: If module name is in globals, use it.
+ Otherwise, use None.
+ */
+ if (!__name__) {
+ __name__ = PyString_InternFromString("__name__");
+ if (!__name__) {
+ Py_DECREF(op);
+ return NULL;
+ }
+ }
+ module = PyDict_GetItem(globals, __name__);
+ if (module) {
+ Py_INCREF(module);
+ op->func_module = module;
+ }
+ }
+ else
+ return NULL;
+ _PyObject_GC_TRACK(op);
+ return (PyObject *)op;
+}
+
+PyObject *
+PyFunction_GetCode(PyObject *op)
+{
+ if (!PyFunction_Check(op)) {
+ PyErr_BadInternalCall();
+ return NULL;
+ }
+ return ((PyFunctionObject *) op) -> func_code;
+}
+
+PyObject *
+PyFunction_GetGlobals(PyObject *op)
+{
+ if (!PyFunction_Check(op)) {
+ PyErr_BadInternalCall();
+ return NULL;
+ }
+ return ((PyFunctionObject *) op) -> func_globals;
+}
+
+PyObject *
+PyFunction_GetModule(PyObject *op)
+{
+ if (!PyFunction_Check(op)) {
+ PyErr_BadInternalCall();
+ return NULL;
+ }
+ return ((PyFunctionObject *) op) -> func_module;
+}
+
+PyObject *
+PyFunction_GetDefaults(PyObject *op)
+{
+ if (!PyFunction_Check(op)) {
+ PyErr_BadInternalCall();
+ return NULL;
+ }
+ return ((PyFunctionObject *) op) -> func_defaults;
+}
+
+int
+PyFunction_SetDefaults(PyObject *op, PyObject *defaults)
+{
+ if (!PyFunction_Check(op)) {
+ PyErr_BadInternalCall();
+ return -1;
+ }
+ if (defaults == Py_None)
+ defaults = NULL;
+ else if (defaults && PyTuple_Check(defaults)) {
+ Py_INCREF(defaults);
+ }
+ else {
+ PyErr_SetString(PyExc_SystemError, "non-tuple default args");
+ return -1;
+ }
+ Py_XDECREF(((PyFunctionObject *) op) -> func_defaults);
+ ((PyFunctionObject *) op) -> func_defaults = defaults;
+ return 0;
+}
+
+PyObject *
+PyFunction_GetClosure(PyObject *op)
+{
+ if (!PyFunction_Check(op)) {
+ PyErr_BadInternalCall();
+ return NULL;
+ }
+ return ((PyFunctionObject *) op) -> func_closure;
+}
+
+int
+PyFunction_SetClosure(PyObject *op, PyObject *closure)
+{
+ if (!PyFunction_Check(op)) {
+ PyErr_BadInternalCall();
+ return -1;
+ }
+ if (closure == Py_None)
+ closure = NULL;
+ else if (PyTuple_Check(closure)) {
+ Py_INCREF(closure);
+ }
+ else {
+ PyErr_Format(PyExc_SystemError,
+ "expected tuple for closure, got '%.100s'",
+ closure->ob_type->tp_name);
+ return -1;
+ }
+ Py_XDECREF(((PyFunctionObject *) op) -> func_closure);
+ ((PyFunctionObject *) op) -> func_closure = closure;
+ return 0;
+}
+
+/* Methods */
+
+#define OFF(x) offsetof(PyFunctionObject, x)
+
+static PyMemberDef func_memberlist[] = {
+ {"func_closure", T_OBJECT, OFF(func_closure),
+ RESTRICTED|READONLY},
+ {"__closure__", T_OBJECT, OFF(func_closure),
+ RESTRICTED|READONLY},
+ {"func_doc", T_OBJECT, OFF(func_doc), PY_WRITE_RESTRICTED},
+ {"__doc__", T_OBJECT, OFF(func_doc), PY_WRITE_RESTRICTED},
+ {"func_globals", T_OBJECT, OFF(func_globals),
+ RESTRICTED|READONLY},
+ {"__globals__", T_OBJECT, OFF(func_globals),
+ RESTRICTED|READONLY},
+ {"__module__", T_OBJECT, OFF(func_module), PY_WRITE_RESTRICTED},
+ {NULL} /* Sentinel */
+};
+
+static int
+restricted(void)
+{
+ if (!PyEval_GetRestricted())
+ return 0;
+ PyErr_SetString(PyExc_RuntimeError,
+ "function attributes not accessible in restricted mode");
+ return 1;
+}
+
+static PyObject *
+func_get_dict(PyFunctionObject *op)
+{
+ if (restricted())
+ return NULL;
+ if (op->func_dict == NULL) {
+ op->func_dict = PyDict_New();
+ if (op->func_dict == NULL)
+ return NULL;
+ }
+ Py_INCREF(op->func_dict);
+ return op->func_dict;
+}
+
+static int
+func_set_dict(PyFunctionObject *op, PyObject *value)
+{
+ PyObject *tmp;
+
+ if (restricted())
+ return -1;
+ /* It is illegal to del f.func_dict */
+ if (value == NULL) {
+ PyErr_SetString(PyExc_TypeError,
+ "function's dictionary may not be deleted");
+ return -1;
+ }
+ /* Can only set func_dict to a dictionary */
+ if (!PyDict_Check(value)) {
+ PyErr_SetString(PyExc_TypeError,
+ "setting function's dictionary to a non-dict");
+ return -1;
+ }
+ tmp = op->func_dict;
+ Py_INCREF(value);
+ op->func_dict = value;
+ Py_XDECREF(tmp);
+ return 0;
+}
+
+static PyObject *
+func_get_code(PyFunctionObject *op)
+{
+ if (restricted())
+ return NULL;
+ Py_INCREF(op->func_code);
+ return op->func_code;
+}
+
+static int
+func_set_code(PyFunctionObject *op, PyObject *value)
+{
+ PyObject *tmp;
+ Py_ssize_t nfree, nclosure;
+
+ if (restricted())
+ return -1;
+ /* Not legal to del f.func_code or to set it to anything
+ * other than a code object. */
+ if (value == NULL || !PyCode_Check(value)) {
+ PyErr_SetString(PyExc_TypeError,
+ "__code__ must be set to a code object");
+ return -1;
+ }
+ nfree = PyCode_GetNumFree((PyCodeObject *)value);
+ nclosure = (op->func_closure == NULL ? 0 :
+ PyTuple_GET_SIZE(op->func_closure));
+ if (nclosure != nfree) {
+ PyErr_Format(PyExc_ValueError,
+ "%s() requires a code object with %zd free vars,"
+ " not %zd",
+ PyString_AsString(op->func_name),
+ nclosure, nfree);
+ return -1;
+ }
+ tmp = op->func_code;
+ Py_INCREF(value);
+ op->func_code = value;
+ Py_DECREF(tmp);
+ return 0;
+}
+
+static PyObject *
+func_get_name(PyFunctionObject *op)
+{
+ Py_INCREF(op->func_name);
+ return op->func_name;
+}
+
+static int
+func_set_name(PyFunctionObject *op, PyObject *value)
+{
+ PyObject *tmp;
+
+ if (restricted())
+ return -1;
+ /* Not legal to del f.func_name or to set it to anything
+ * other than a string object. */
+ if (value == NULL || !PyString_Check(value)) {
+ PyErr_SetString(PyExc_TypeError,
+ "__name__ must be set to a string object");
+ return -1;
+ }
+ tmp = op->func_name;
+ Py_INCREF(value);
+ op->func_name = value;
+ Py_DECREF(tmp);
+ return 0;
+}
+
+static PyObject *
+func_get_defaults(PyFunctionObject *op)
+{
+ if (restricted())
+ return NULL;
+ if (op->func_defaults == NULL) {
+ Py_INCREF(Py_None);
+ return Py_None;
+ }
+ Py_INCREF(op->func_defaults);
+ return op->func_defaults;
+}
+
+static int
+func_set_defaults(PyFunctionObject *op, PyObject *value)
+{
+ PyObject *tmp;
+
+ if (restricted())
+ return -1;
+ /* Legal to del f.func_defaults.
+ * Can only set func_defaults to NULL or a tuple. */
+ if (value == Py_None)
+ value = NULL;
+ if (value != NULL && !PyTuple_Check(value)) {
+ PyErr_SetString(PyExc_TypeError,
+ "__defaults__ must be set to a tuple object");
+ return -1;
+ }
+ tmp = op->func_defaults;
+ Py_XINCREF(value);
+ op->func_defaults = value;
+ Py_XDECREF(tmp);
+ return 0;
+}
+
+static PyGetSetDef func_getsetlist[] = {
+ {"func_code", (getter)func_get_code, (setter)func_set_code},
+ {"__code__", (getter)func_get_code, (setter)func_set_code},
+ {"func_defaults", (getter)func_get_defaults,
+ (setter)func_set_defaults},
+ {"__defaults__", (getter)func_get_defaults,
+ (setter)func_set_defaults},
+ {"func_dict", (getter)func_get_dict, (setter)func_set_dict},
+ {"__dict__", (getter)func_get_dict, (setter)func_set_dict},
+ {"func_name", (getter)func_get_name, (setter)func_set_name},
+ {"__name__", (getter)func_get_name, (setter)func_set_name},
+ {NULL} /* Sentinel */
+};
+
+PyDoc_STRVAR(func_doc,
+"function(code, globals[, name[, argdefs[, closure]]])\n\
+\n\
+Create a function object from a code object and a dictionary.\n\
+The optional name string overrides the name from the code object.\n\
+The optional argdefs tuple specifies the default argument values.\n\
+The optional closure tuple supplies the bindings for free variables.");
+
+/* func_new() maintains the following invariants for closures. The
+ closure must correspond to the free variables of the code object.
+
+ if len(code.co_freevars) == 0:
+ closure = NULL
+ else:
+ len(closure) == len(code.co_freevars)
+ for every elt in closure, type(elt) == cell
+*/
+
+static PyObject *
+func_new(PyTypeObject* type, PyObject* args, PyObject* kw)
+{
+ PyCodeObject *code;
+ PyObject *globals;
+ PyObject *name = Py_None;
+ PyObject *defaults = Py_None;
+ PyObject *closure = Py_None;
+ PyFunctionObject *newfunc;
+ Py_ssize_t nfree, nclosure;
+ static char *kwlist[] = {"code", "globals", "name",
+ "argdefs", "closure", 0};
+
+ if (!PyArg_ParseTupleAndKeywords(args, kw, "O!O!|OOO:function",
+ kwlist,
+ &PyCode_Type, &code,
+ &PyDict_Type, &globals,
+ &name, &defaults, &closure))
+ return NULL;
+ if (name != Py_None && !PyString_Check(name)) {
+ PyErr_SetString(PyExc_TypeError,
+ "arg 3 (name) must be None or string");
+ return NULL;
+ }
+ if (defaults != Py_None && !PyTuple_Check(defaults)) {
+ PyErr_SetString(PyExc_TypeError,
+ "arg 4 (defaults) must be None or tuple");
+ return NULL;
+ }
+ nfree = PyTuple_GET_SIZE(code->co_freevars);
+ if (!PyTuple_Check(closure)) {
+ if (nfree && closure == Py_None) {
+ PyErr_SetString(PyExc_TypeError,
+ "arg 5 (closure) must be tuple");
+ return NULL;
+ }
+ else if (closure != Py_None) {
+ PyErr_SetString(PyExc_TypeError,
+ "arg 5 (closure) must be None or tuple");
+ return NULL;
+ }
+ }
+
+ /* check that the closure is well-formed */
+ nclosure = closure == Py_None ? 0 : PyTuple_GET_SIZE(closure);
+ if (nfree != nclosure)
+ return PyErr_Format(PyExc_ValueError,
+ "%s requires closure of length %zd, not %zd",
+ PyString_AS_STRING(code->co_name),
+ nfree, nclosure);
+ if (nclosure) {
+ Py_ssize_t i;
+ for (i = 0; i < nclosure; i++) {
+ PyObject *o = PyTuple_GET_ITEM(closure, i);
+ if (!PyCell_Check(o)) {
+ return PyErr_Format(PyExc_TypeError,
+ "arg 5 (closure) expected cell, found %s",
+ o->ob_type->tp_name);
+ }
+ }
+ }
+
+ newfunc = (PyFunctionObject *)PyFunction_New((PyObject *)code,
+ globals);
+ if (newfunc == NULL)
+ return NULL;
+
+ if (name != Py_None) {
+ Py_INCREF(name);
+ Py_DECREF(newfunc->func_name);
+ newfunc->func_name = name;
+ }
+ if (defaults != Py_None) {
+ Py_INCREF(defaults);
+ newfunc->func_defaults = defaults;
+ }
+ if (closure != Py_None) {
+ Py_INCREF(closure);
+ newfunc->func_closure = closure;
+ }
+
+ return (PyObject *)newfunc;
+}
+
+static void
+func_dealloc(PyFunctionObject *op)
+{
+ _PyObject_GC_UNTRACK(op);
+ if (op->func_weakreflist != NULL)
+ PyObject_ClearWeakRefs((PyObject *) op);
+ Py_DECREF(op->func_code);
+ Py_DECREF(op->func_globals);
+ Py_XDECREF(op->func_module);
+ Py_DECREF(op->func_name);
+ Py_XDECREF(op->func_defaults);
+ Py_XDECREF(op->func_doc);
+ Py_XDECREF(op->func_dict);
+ Py_XDECREF(op->func_closure);
+ PyObject_GC_Del(op);
+}
+
+static PyObject*
+func_repr(PyFunctionObject *op)
+{
+ return PyString_FromFormat("<function %s at %p>",
+ PyString_AsString(op->func_name),
+ op);
+}
+
+static int
+func_traverse(PyFunctionObject *f, visitproc visit, void *arg)
+{
+ Py_VISIT(f->func_code);
+ Py_VISIT(f->func_globals);
+ Py_VISIT(f->func_module);
+ Py_VISIT(f->func_defaults);
+ Py_VISIT(f->func_doc);
+ Py_VISIT(f->func_name);
+ Py_VISIT(f->func_dict);
+ Py_VISIT(f->func_closure);
+ return 0;
+}
+
+static PyObject *
+function_call(PyObject *func, PyObject *arg, PyObject *kw)
+{
+ PyObject *result;
+ PyObject *argdefs;
+ PyObject *kwtuple = NULL;
+ PyObject **d, **k;
+ Py_ssize_t nk, nd;
+
+ argdefs = PyFunction_GET_DEFAULTS(func);
+ if (argdefs != NULL && PyTuple_Check(argdefs)) {
+ d = &PyTuple_GET_ITEM((PyTupleObject *)argdefs, 0);
+ nd = PyTuple_GET_SIZE(argdefs);
+ }
+ else {
+ d = NULL;
+ nd = 0;
+ }
+
+ if (kw != NULL && PyDict_Check(kw)) {
+ Py_ssize_t pos, i;
+ nk = PyDict_Size(kw);
+ kwtuple = PyTuple_New(2*nk);
+ if (kwtuple == NULL)
+ return NULL;
+ k = &PyTuple_GET_ITEM(kwtuple, 0);
+ pos = i = 0;
+ while (PyDict_Next(kw, &pos, &k[i], &k[i+1])) {
+ Py_INCREF(k[i]);
+ Py_INCREF(k[i+1]);
+ i += 2;
+ }
+ nk = i/2;
+ }
+ else {
+ k = NULL;
+ nk = 0;
+ }
+
+ result = PyEval_EvalCodeEx(
+ (PyCodeObject *)PyFunction_GET_CODE(func),
+ PyFunction_GET_GLOBALS(func), (PyObject *)NULL,
+ &PyTuple_GET_ITEM(arg, 0), PyTuple_GET_SIZE(arg),
+ k, nk, d, nd,
+ PyFunction_GET_CLOSURE(func));
+
+ Py_XDECREF(kwtuple);
+
+ return result;
+}
+
+/* Bind a function to an object */
+static PyObject *
+func_descr_get(PyObject *func, PyObject *obj, PyObject *type)
+{
+ if (obj == Py_None)
+ obj = NULL;
+ return PyMethod_New(func, obj, type);
+}
+
+PyTypeObject PyFunction_Type = {
+ PyVarObject_HEAD_INIT(&PyType_Type, 0)
+ "function",
+ sizeof(PyFunctionObject),
+ 0,
+ (destructor)func_dealloc, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ 0, /* tp_compare */
+ (reprfunc)func_repr, /* tp_repr */
+ 0, /* tp_as_number */
+ 0, /* tp_as_sequence */
+ 0, /* tp_as_mapping */
+ 0, /* tp_hash */
+ function_call, /* tp_call */
+ 0, /* tp_str */
+ PyObject_GenericGetAttr, /* tp_getattro */
+ PyObject_GenericSetAttr, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */
+ func_doc, /* tp_doc */
+ (traverseproc)func_traverse, /* tp_traverse */
+ 0, /* tp_clear */
+ 0, /* tp_richcompare */
+ offsetof(PyFunctionObject, func_weakreflist), /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ 0, /* tp_methods */
+ func_memberlist, /* tp_members */
+ func_getsetlist, /* tp_getset */
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ func_descr_get, /* tp_descr_get */
+ 0, /* tp_descr_set */
+ offsetof(PyFunctionObject, func_dict), /* tp_dictoffset */
+ 0, /* tp_init */
+ 0, /* tp_alloc */
+ func_new, /* tp_new */
+};
+
+
+/* Class method object */
+
+/* A class method receives the class as implicit first argument,
+ just like an instance method receives the instance.
+ To declare a class method, use this idiom:
+
+ class C:
+ def f(cls, arg1, arg2, ...): ...
+ f = classmethod(f)
+
+ It can be called either on the class (e.g. C.f()) or on an instance
+ (e.g. C().f()); the instance is ignored except for its class.
+ If a class method is called for a derived class, the derived class
+ object is passed as the implied first argument.
+
+ Class methods are different than C++ or Java static methods.
+ If you want those, see static methods below.
+*/
+
+typedef struct {
+ PyObject_HEAD
+ PyObject *cm_callable;
+} classmethod;
+
+static void
+cm_dealloc(classmethod *cm)
+{
+ _PyObject_GC_UNTRACK((PyObject *)cm);
+ Py_XDECREF(cm->cm_callable);
+ Py_TYPE(cm)->tp_free((PyObject *)cm);
+}
+
+static int
+cm_traverse(classmethod *cm, visitproc visit, void *arg)
+{
+ Py_VISIT(cm->cm_callable);
+ return 0;
+}
+
+static int
+cm_clear(classmethod *cm)
+{
+ Py_CLEAR(cm->cm_callable);
+ return 0;
+}
+
+
+static PyObject *
+cm_descr_get(PyObject *self, PyObject *obj, PyObject *type)
+{
+ classmethod *cm = (classmethod *)self;
+
+ if (cm->cm_callable == NULL) {
+ PyErr_SetString(PyExc_RuntimeError,
+ "uninitialized classmethod object");
+ return NULL;
+ }
+ if (type == NULL)
+ type = (PyObject *)(Py_TYPE(obj));
+ return PyMethod_New(cm->cm_callable,
+ type, (PyObject *)(Py_TYPE(type)));
+}
+
+static int
+cm_init(PyObject *self, PyObject *args, PyObject *kwds)
+{
+ classmethod *cm = (classmethod *)self;
+ PyObject *callable;
+
+ if (!PyArg_UnpackTuple(args, "classmethod", 1, 1, &callable))
+ return -1;
+ if (!_PyArg_NoKeywords("classmethod", kwds))
+ return -1;
+ Py_INCREF(callable);
+ cm->cm_callable = callable;
+ return 0;
+}
+
+static PyMemberDef cm_memberlist[] = {
+ {"__func__", T_OBJECT, offsetof(classmethod, cm_callable), READONLY},
+ {NULL} /* Sentinel */
+};
+
+PyDoc_STRVAR(classmethod_doc,
+"classmethod(function) -> method\n\
+\n\
+Convert a function to be a class method.\n\
+\n\
+A class method receives the class as implicit first argument,\n\
+just like an instance method receives the instance.\n\
+To declare a class method, use this idiom:\n\
+\n\
+ class C:\n\
+ def f(cls, arg1, arg2, ...): ...\n\
+ f = classmethod(f)\n\
+\n\
+It can be called either on the class (e.g. C.f()) or on an instance\n\
+(e.g. C().f()). The instance is ignored except for its class.\n\
+If a class method is called for a derived class, the derived class\n\
+object is passed as the implied first argument.\n\
+\n\
+Class methods are different than C++ or Java static methods.\n\
+If you want those, see the staticmethod builtin.");
+
+PyTypeObject PyClassMethod_Type = {
+ PyVarObject_HEAD_INIT(&PyType_Type, 0)
+ "classmethod",
+ sizeof(classmethod),
+ 0,
+ (destructor)cm_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_BASETYPE | Py_TPFLAGS_HAVE_GC,
+ classmethod_doc, /* tp_doc */
+ (traverseproc)cm_traverse, /* tp_traverse */
+ (inquiry)cm_clear, /* tp_clear */
+ 0, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ 0, /* tp_methods */
+ cm_memberlist, /* tp_members */
+ 0, /* tp_getset */
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ cm_descr_get, /* tp_descr_get */
+ 0, /* tp_descr_set */
+ 0, /* tp_dictoffset */
+ cm_init, /* tp_init */
+ PyType_GenericAlloc, /* tp_alloc */
+ PyType_GenericNew, /* tp_new */
+ PyObject_GC_Del, /* tp_free */
+};
+
+PyObject *
+PyClassMethod_New(PyObject *callable)
+{
+ classmethod *cm = (classmethod *)
+ PyType_GenericAlloc(&PyClassMethod_Type, 0);
+ if (cm != NULL) {
+ Py_INCREF(callable);
+ cm->cm_callable = callable;
+ }
+ return (PyObject *)cm;
+}
+
+
+/* Static method object */
+
+/* A static method does not receive an implicit first argument.
+ To declare a static method, use this idiom:
+
+ class C:
+ def f(arg1, arg2, ...): ...
+ f = staticmethod(f)
+
+ It can be called either on the class (e.g. C.f()) or on an instance
+ (e.g. C().f()); the instance is ignored except for its class.
+
+ Static methods in Python are similar to those found in Java or C++.
+ For a more advanced concept, see class methods above.
+*/
+
+typedef struct {
+ PyObject_HEAD
+ PyObject *sm_callable;
+} staticmethod;
+
+static void
+sm_dealloc(staticmethod *sm)
+{
+ _PyObject_GC_UNTRACK((PyObject *)sm);
+ Py_XDECREF(sm->sm_callable);
+ Py_TYPE(sm)->tp_free((PyObject *)sm);
+}
+
+static int
+sm_traverse(staticmethod *sm, visitproc visit, void *arg)
+{
+ Py_VISIT(sm->sm_callable);
+ return 0;
+}
+
+static int
+sm_clear(staticmethod *sm)
+{
+ Py_XDECREF(sm->sm_callable);
+ sm->sm_callable = NULL;
+
+ return 0;
+}
+
+static PyObject *
+sm_descr_get(PyObject *self, PyObject *obj, PyObject *type)
+{
+ staticmethod *sm = (staticmethod *)self;
+
+ if (sm->sm_callable == NULL) {
+ PyErr_SetString(PyExc_RuntimeError,
+ "uninitialized staticmethod object");
+ return NULL;
+ }
+ Py_INCREF(sm->sm_callable);
+ return sm->sm_callable;
+}
+
+static int
+sm_init(PyObject *self, PyObject *args, PyObject *kwds)
+{
+ staticmethod *sm = (staticmethod *)self;
+ PyObject *callable;
+
+ if (!PyArg_UnpackTuple(args, "staticmethod", 1, 1, &callable))
+ return -1;
+ if (!_PyArg_NoKeywords("staticmethod", kwds))
+ return -1;
+ Py_INCREF(callable);
+ sm->sm_callable = callable;
+ return 0;
+}
+
+static PyMemberDef sm_memberlist[] = {
+ {"__func__", T_OBJECT, offsetof(staticmethod, sm_callable), READONLY},
+ {NULL} /* Sentinel */
+};
+
+PyDoc_STRVAR(staticmethod_doc,
+"staticmethod(function) -> method\n\
+\n\
+Convert a function to be a static method.\n\
+\n\
+A static method does not receive an implicit first argument.\n\
+To declare a static method, use this idiom:\n\
+\n\
+ class C:\n\
+ def f(arg1, arg2, ...): ...\n\
+ f = staticmethod(f)\n\
+\n\
+It can be called either on the class (e.g. C.f()) or on an instance\n\
+(e.g. C().f()). The instance is ignored except for its class.\n\
+\n\
+Static methods in Python are similar to those found in Java or C++.\n\
+For a more advanced concept, see the classmethod builtin.");
+
+PyTypeObject PyStaticMethod_Type = {
+ PyVarObject_HEAD_INIT(&PyType_Type, 0)
+ "staticmethod",
+ sizeof(staticmethod),
+ 0,
+ (destructor)sm_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_BASETYPE | Py_TPFLAGS_HAVE_GC,
+ staticmethod_doc, /* tp_doc */
+ (traverseproc)sm_traverse, /* tp_traverse */
+ (inquiry)sm_clear, /* tp_clear */
+ 0, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ 0, /* tp_methods */
+ sm_memberlist, /* tp_members */
+ 0, /* tp_getset */
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ sm_descr_get, /* tp_descr_get */
+ 0, /* tp_descr_set */
+ 0, /* tp_dictoffset */
+ sm_init, /* tp_init */
+ PyType_GenericAlloc, /* tp_alloc */
+ PyType_GenericNew, /* tp_new */
+ PyObject_GC_Del, /* tp_free */
+};
+
+PyObject *
+PyStaticMethod_New(PyObject *callable)
+{
+ staticmethod *sm = (staticmethod *)
+ PyType_GenericAlloc(&PyStaticMethod_Type, 0);
+ if (sm != NULL) {
+ Py_INCREF(callable);
+ sm->sm_callable = callable;
+ }
+ return (PyObject *)sm;
+}
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